Manufacture of diesel engine-fitted bodyless ladder-frame road-bus chassis

Lifecycle status: Candidate
Content maturity: Authored methodology
Current version: 0.1.0Last updated2026-10-06
Readiness: Review required

Methodology and translation states come from the source record; publishing this website does not change their review status.

Content languages

zh-CN · Aligned

Status, classification and source details

Readiness

Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.

Classification mapping

CPC 3.0:49121 · narrower

Source

library/pcrs/metal-products-machinery-and-equipment/transport-equipment/engine-fitted-road-vehicle-chassissha256:1d5d64969774…

1. Scope and Applicability

Manufacture of new diesel engine-fitted, cabless and bodyless rolling chassis for road buses using a separate conventional steel ladder frame, accepted as complete chassis assemblies before coachwork. This narrower CPC49121 boundary addresses engine placement, driveline/running-gear supply completeness, bolted frame integration and measured net chassis delivery. It excludes complete buses/lorries, cabs/coachwork, unitary passenger-car platforms, body-integral structures, battery-electric/hybrid/gas or spark-ignition propulsion, non-road machines, trailers, loose frames/engines, incomplete kits and refurbishment. Existing material motor-vehicle body PCR explicitly excludes engine-fitted chassis; its coachwork manufacturing rules do not replace this rolling-chassis integration methodology. Front/rear engine position, gearbox, suspension and brake design must be declared for one configuration, not averaged by default. Mercedes February2022 and Volvo footer2019-11-26 are historical model-specific architecture/delivery examples, not current regulatory proof or factory recipes. Downstream bodybuilding, road transport services, passengers/payload, use fuel, maintenance, lifetime and end of life are outside.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.transport-equipment.engine-fitted-road-vehicle-chassis
classification_refs	CPC 3.0 49121; narrower candidate; no accepted mapping asserted
covered_products	New complete diesel bodyless steel ladder-frame road-bus chassis assemblies
excluded_products	Complete vehicles/coachwork; unitary/body-integral platforms; other propulsion/non-road/trailer routes; loose parts/kits; use/services
representative_product	One accepted bolted ladder-frame chassis with diesel engine, declared transmission, axles, air suspension, pneumatic drum brakes, wheels, hydraulic steering and actual supplied electrics/fluids
production_route	Receipt/make-or-buy control; conditional stock fabrication/finishing; frame receipt or assembly; powertrain/running-gear/electrical integration; actual fills/checks/acceptance; dispatch protection
market_state	Accepted net complete chassis at its declared factory gate, awaiting coachwork; not a roadworthiness assertion

3. Reference Flow

Field	Value
What	Manufacture one declared complete diesel engine-fitted bodyless bus chassis configuration
How much	1 kg accepted net complete machine; one accepted complete machine is represented by physically measured M kg
How well	Meet actual OEM drawing/BOM and inspection plan for frame joints/alignment, engine/transmission/axle mountings, steering/brake connections, electrical checks and actual leak/function tests. Retain actual criteria/results; no universal bolt torque, pressure, tolerance or test duration
How long or cycle	One chassis manufacturing delivery; no passenger-km, road-mile or lifetime/cycle unit
reference_flow_link	`finished_chassis`

Field	Value
Reference amount	1
Reference product flow	Chassis fitted with engines, for motor vehicles `78532304-4355-400e-8bab-e2f6858050db`
Reference flow property	Mass `93a60a56-a3c8-11da-a746-0800200b9a66`
Reference unit group	Units of mass `93a60a57-a4c8-11da-a746-0800200c9a66`
Reference unit	kg
Required qualifiers	Model/serial/drawing/BOM revision; ladder-frame material/joints; bodyless/cabless completeness; actual engine position and diesel specification; transmission/driveline/axles; suspension/brake/wheel/steering designs; electrical/exhaust/cooling scope and bought inclusions; fluid formulations/actual fills/residual fuel; accepted geometry versus transport configuration; measured positive M with scale/tare and acceptance; temporary seat/control/fixture/loose-spare/packaging exclusions; site/period/count/gates and actual checks/results

Declare all qualifiers in dataset metadata or equivalent process/flow notes. One complete machine in this PCR means one complete accepted engine-fitted chassis assembly, although the road vehicle remains incomplete until coachwork. A shipping kit, bare frame or catalogue gross rating is not this reference.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
`reference_mass`	reference product	Mass `93a60a56-a3c8-11da-a746-0800200b9a66`	kg	M = accepted net mass of one complete machine of the same configuration in kg; collect using cp_mass.
`delivery_configuration`	complete chassis	Mass	kg	Include actual OEM-accepted installed chassis systems and retained working fluids/fuel; include a permanently supplied/stowed wheel only if in the declared accepted chassis configuration. Exclude coachwork/cab, people, test loads, temporary transport driver seat/control fixtures, loose tools/spares and packaging. Record actual delivery scope. Catalogue running-order weight may include full fuel, spare wheel and tools, and cannot supply this M. If shipping shortens/dismantles the chassis, retain accepted complete-configuration weighing and traceable separate parts; do not substitute shipping weight or invented part mass.
`electrical_energy`	electricity_fabrication; electricity_finishing; electricity_frame; electricity_integration; electricity_acceptance	Net calorific value `93a60a56-a3c8-11da-a746-0800200c9a66`	MJ	Retain metered kWh and convert1 kWh =3.6 MJ. Rated engine power or installed equipment ratings do not establish factory electricity.
`component_count`	bus_tyre	Number of items `01846770-4cfe-4a25-8ad9-919d8d378345`	Item(s)	Retain public Number of items and actual installed count of each single tyre design. Actual lot-specific measured kg/item times installed count reconciles physical BOM mass only; it does not replace the exchange property. No default wheel count or catalogue tyre weight.
`hydraulic_volume`	hydraulic_oil	Volume `93a60a56-a3c8-22da-a746-0800200c9a66`	m3	Retain metered net formulated-fluid volume; convert1 L =0.001 m3. For physical retained mass within M only, use measured density at recorded temperature and m = rho times V. No default density or nominal reservoir fill.
`water_resource_volume`	groundwater	Volume `93a60a56-a3c8-22da-a746-0800200c9a66`	m3	Meter qualifying renewable freshwater groundwater with aquifer/site/country evidence; it is not tap water or wastewater.
`material_mass`	other inputs/wastes/emissions	Mass	kg	Weigh each specified component/formulation/waste or measure each emitted species. Volume-to-mass conversion needs actual density and temperature/pressure evidence. NO, NO2 and N2O cannot be interchanged; constituent mass inside a purchased mixture is not another receipt.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Specified purchased rails/frame, diesel propulsion engine and rolling-chassis components plus actual local stock/consumables received at chassis factory
starting_condition_role	Foreground receipt gate; upstream manufacture and incoming transport separately linked
product_classification_scope	Cabless/bodyless diesel steel ladder-frame bus-chassis subset of CPC49121
recursive_input_rule	Purchased complete frame/engine/axle replaces included parts and supplier/local operations. Local WIP transfers do not create external receipts
upstream_dataset_requirement	Match frame finish/geometry, road-propulsion engine duty, axle geography and brake scope, component state/property, oil/fuel formulation, electricity source and actual waste receiver
disclosure	Foreground configured chassis manufacture only; disclose local/bought/outsourced operations and missing upstream/transport/receiver links. No complete cradle-to-gate assertion

rule_id	applies_to	rule	source_ids
`boundary_frame`	fabrication; finishing; frame	Frame receipt or actual bolted assembly is required, not mandatory local raw-steel manufacture. Include local cutting/forming/drilling and finishing only when performed; purchased formed/coated rails or complete frame exclude their local stock and upstream operations. Mercedes p.2 supports one bolted ladder-frame example, not mandatory welding, LNE500, a fastener specification or powder coating. Expand actual nuts/washers/brackets, wet paint/solvents, machining fluid, blasting, heat/oven fuels or outsourcing as separate atomic cards before coverage claims.	mercedes-of1721-chassis-2022
`boundary_integration`	integration	Required receipt/BOM verification and installation of actual engine/gearbox/driveline, axles/suspension/wheels, steering/brake circuits and supplied cooling/exhaust/electrics, connections, fills and adjustment. One supplier gate per assembly prevents duplicate compressor/starter/alternator, brakes, oil and wiring. The representative drum/air-bellows route is not universal: an actual disc brake, leaf suspension, different tank/rim or engine-placement route must expand and qualify its own cards. No coachwork or cab is installed within this scope.	mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019
`boundary_acceptance`	acceptance	Chassis acceptance is required. Include physical leak/brake/steering/drivetrain/electrical tests and engine runs only under actual OEM work records, with real criteria/results, duration, loads, fills/returns and monitored releases. No road-test distance, regulatory emission limit, wheel count or fuel-consumption rate is assumed. Reusable support rigs, temporary driver controls and test loads are factory fixtures; actual attributable replacement/service burden is separately evidenced. Downstream bodybuilder wheelbase extension and customer use are outside.
`boundary_emissions`	finishing; acceptance	Record only actual direct releases of individual species after controls. Separate groundwater resource from supplied water and contained wastewater, emitted particulate from collected dust, test-consumed from retained fuel and fossil from biogenic carbon. Actual other air submedia, measured particle fractions or water/soil species require matching cards. An absent card is not evidence of zero release.

6. Process Inventory Structure

Process Map

process_id	Process name	Inclusion	Inclusion condition	Role	Quantitative reference
`fabrication`	Local rail and crossmember fabrication	conditional	Only actual cutting, forming and drilling from stock	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine
`finishing`	Local steel surface finishing	conditional	Only actual local preparation and declared powder-coating route	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine
`frame`	Frame receipt or bolted assembly	required	Receive a complete frame or assemble actual longitudinal rails/crossmembers	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine
`integration`	Powertrain and rolling-chassis integration	required	Integrate the declared complete engine-fitted bodyless chassis	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine
`acceptance`	Factory checks and chassis acceptance	required	Actual OEM checks; physical engine/brake/drivetrain tests only as performed	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine
`packout`	Dispatch protection	conditional	Only actual supplied protection	Foreground stage; internal WIP	per 1 kg reference flow; collected per one accepted finished machine

Process: Local rail and crossmember fabrication (`fabrication`)

Inputs

Product flows

Certified hot-rolled HSLA steel plate (`hsla_plate`)

Only the actual certificate-declared single grade, thickness and delivery state entering local rail/crossmember fabrication. Weigh net issues and returns. Mercedes LNE500 is a historical model example, not a universal grade. Bought finished rails or frame replace this stock and local operations.

Selected flow: Certified hot-rolled HSLA steel plate
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Low-voltage grid electricity (`electricity_fabrication`)

Meter attributable stage electricity, including actual rework and idle. Public identity is user-side grid-average AC below1kV; different voltage or self-generation requires a matching separate card. Bought operations are not repeated as local electricity.

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_energy.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_energy
Sources:

Outputs

Waste flows

Untreated clean HSLA steel offcut (`steel_offcut`)

Only actual segregated exports of one certified alloy in the declared clean state. Weigh receiver-bound mass and record oil/water contamination. Internal reuse is not exported waste; oil-contaminated chips need another card. No automatic avoided-steel credit.

Selected flow: Post-industrial steel scrap c143745d-be4f-4d8f-b403-2dcbfe685349
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Clean HSLA steel drilling chips (`steel_chip`)

Selected flow: Steel scrap, machining chips 7f46756b-6f66-46a7-bbcb-c04727d9d19e
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Process: Local steel surface finishing (`finishing`)

Inputs

Product flows

Low-voltage grid electricity (`electricity_finishing`)

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_energy.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_energy
Sources:

One polyester powder-coating formulation (`polyester_powder`)

Only if actual local finishing uses this single supplier-certified polyester powder. Weigh net fresh issues, returns/recovery and cured coating; purchased coated rails/frame exclude local coating. Public Mass powder identity is narrowed to this formulation; it is not a coating service. Other actual finishes require their own formulation cards.

Selected flow: Powder Coating 6e3010f9-fbd3-48f6-95fc-c1b38d2800d2
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Resin-bonded aluminium-oxide abrasive disc (`abrasive_disc`)

One actual disc design for local rail-edge deburring or finishing. Weigh attributable replacements and stock balance, retaining grain, binder and dimensions; no whole disc per chassis assumption.

Selected flow: Resin-bonded aluminium-oxide abrasive disc
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Supplied drinking-quality cleaning water (`water_finishing`)

Only actual drinking-quality tap-water make-up for aqueous cleaning. Weigh or meter with measured temperature/density. Internal circulation and water already contained in purchased mixtures are not additional receipts.

Selected flow: Tap water d1e0e36c-07f0-4a75-bdcb-efb5d9e2ac36
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Elementary flows

Abstracted renewable freshwater groundwater (`groundwater`)

Only actual factory-well abstraction verified as renewable freshwater for the aquifer/site/country. Meter m3 and expand pumping/treatment. The same water cannot also be purchased tap water.

Selected flow: ground water 4f462198-40cd-4184-8733-86648a20dc3f
Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_water_resource.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_water_resource
Sources:

Outputs

Waste flows

Spent resin-bonded aluminium-oxide abrasive disc (`spent_disc`)

Only an actual separately collected export of this one specified waste. Weigh wet or dry mass on a declared basis, record oil/water/solids composition and receiver treatment. Recovered powder/water is internal reuse; no direct water discharge is inferred.

Selected flow: Waste polishing media cdb1838e-d3ec-41e1-87ee-627b9ce95e88
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Captured dry HSLA-steel deburring dust (`captured_dust`)

Selected flow: Captured dry HSLA-steel deburring dust
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Collected waste polyester powder overspray (`powder_waste`)

Selected flow: Collected waste polyester powder overspray
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Contained spent aqueous steel-cleaning solution (`cleaning_water`)

Selected flow: Contained spent aqueous steel-cleaning solution
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Elementary flows

Air particulate, particle size unspecified (`air_dust`)

Only actual measured post-control particulate release from local steel finishing, with unspecified size and immediate air submedium unspecified. Pair concentration and exhaust volume on identical conditions. Captured dust is separate waste; specific measured size or submedium requires a different identity.

Selected flow: Particulate matter, particle size unspecified 0ce3dedb-caca-407b-a856-a90470eb8ec0
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_emission.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_emission
Sources:

Process: Frame receipt or bolted assembly (`frame`)

Inputs

Product flows

Low-voltage grid electricity (`electricity_frame`)

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_energy.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_energy
Sources:

Finished bolted steel bus ladder-frame assembly (`frame_assembly`)

One actual purchased design, measured at receipt and installation. A bought complete frame excludes its separately bought rails/crossmembers and local fabrication/assembly; a local bolted frame uses actual rails/crossmembers, fasteners and fixture electricity. Record coating, drilling, joining and supplier completeness; other sizes/designs have separate cards.

Selected flow: Finished bolted steel bus ladder-frame assembly
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished formed steel bus-frame longitudinal rail (`rail`)

Selected flow: Finished formed steel bus-frame longitudinal rail
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished steel bus-frame crossmember (`crossmember`)

Selected flow: Finished steel bus-frame crossmember
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished hexagonal-head steel frame bolt (`frame_bolt`)

One actual separately supplied bolt design/grade/coating/dimension for bolted frame joints. Weigh installed mass and net issues; purchased complete frame inclusions are excluded. Nuts and washers are distinct physical exchanges. No universal fastener grade/count or torque follows from an OEM brochure.

Selected flow: Steel fasteners cad280ce-7850-46a1-9060-4f8b68bf5532
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished steel hexagonal frame nut (`frame_nut`)

One actual separately supplied nut design matching the recorded frame joint. Weigh installed net mass; separate washers, bolts and bought-frame inclusions. No preset count or mass.

Selected flow: Steel fasteners cad280ce-7850-46a1-9060-4f8b68bf5532
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Outputs

Process: Powertrain and rolling-chassis integration (`integration`)

Inputs

Product flows

Low-voltage grid electricity (`electricity_integration`)

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_energy.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_energy
Sources:

Finished diesel propulsion engine for a road bus (`road_engine`)

One actual separately supplied compression-ignition piston engine for road-vehicle propulsion, matching CPC43123 public Mass identity. Weigh delivered net engine and record included fuel-injection, starter/alternator/compressor and fluids. Do not use CPC43110 non-motor-vehicle engines, or assume local casting/machining of purchased engine internals.

Selected flow: Compression-ignition internal combustion piston engines, of a kind used for the propulsion of vehicles other than railway or tramway rolling stock 2bc283a7-36f3-40f7-9e15-54851b888d33
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished automatic road-bus gearbox assembly (`gearbox`)

Only one actual separately purchased design in the declared chassis BOM. Weigh installed net mass and retain material/design, interfaces and supplier inclusions. Exclude parts already within a purchased engine/axle/frame. Initial cards must expand other actual components and alternative designs; a local equivalent replaces the receipt with actual stock and operations.

Selected flow: Finished automatic road-bus gearbox assembly
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished steel road-bus propeller-shaft assembly (`propshaft`)

Selected flow: Finished steel road-bus propeller-shaft assembly
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished rubber bus-suspension air bellows (`air_bellows`)

Selected flow: Finished rubber bus-suspension air bellows
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished hydraulic bus-suspension damper (`damper`)

Selected flow: Finished hydraulic bus-suspension damper
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished steel road-bus wheel rim (`wheel_rim`)

Selected flow: Finished steel road-bus wheel rim
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished hydraulic road-bus steering gear (`steering_gear`)

Selected flow: Finished hydraulic road-bus steering gear
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished cast-iron road-bus brake drum (`brake_drum`)

Selected flow: Finished cast-iron road-bus brake drum
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished pneumatic spring parking-brake chamber (`spring_brake_chamber`)

Selected flow: Finished pneumatic spring parking-brake chamber
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022

Finished pneumatic service-brake control valve (`brake_valve`)

Selected flow: Finished pneumatic service-brake control valve
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished steel road-bus air-brake pipe (`brake_pipe`)

Selected flow: Finished steel road-bus air-brake pipe
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished steel road-bus diesel-fuel tank (`fuel_tank`)

Selected flow: Finished steel road-bus diesel-fuel tank
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished aluminium road-bus engine radiator (`radiator`)

Selected flow: Finished aluminium road-bus engine radiator
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: volvo-b8r-chassis-2019

Finished diesel SCR exhaust-treatment assembly (`aftertreatment`)

Selected flow: Finished diesel SCR exhaust-treatment assembly
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: volvo-b8r-chassis-2019

Finished steering front-axle assembly supplied from CN (`front_axle`)

One actual separately supplied CN axle design, narrowing the public purchased motor-vehicle axle identity. Weigh installed net mass and record hubs, differential where present, brake completeness and supplier gate. Included brake drums/parts are not repeated; other geographies require another identity. Trailer running-gear axles are excluded.

Selected flow: Axle assembly b5183f5e-96ba-4fae-a49f-20c222b9a6ee
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished rear drive-axle assembly supplied from CN (`rear_axle`)

Selected flow: Axle assembly b5183f5e-96ba-4fae-a49f-20c222b9a6ee
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

One new pneumatic rubber road-bus tyre design (`bus_tyre`)

Count actual installed new bus tyres of one design and returns, preserving public Number of items. Obtain actual lot-specific net kg/item by calibrated weighing for physical BOM/M reconciliation only. No universal wheel count, tyre mass or retread substitution. Included supplier wheels/tyres are excluded.

Selected flow: Tire 11c2e97a-624f-41de-957d-543cddb777ef
Flow property / unit: Number of items 01846770-4cfe-4a25-8ad9-919d8d378345 / Item(s)
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_count.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_count
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Finished engine-driven brake-air compressor (`air_compressor`)

One actual separately bought air compressor for the pneumatic brake system, narrowing the broader finished air-compressor category. Weigh installed mass; do not duplicate an engine-included compressor. Refrigeration compressors, site compressed-air supply and locally produced test air are different exchanges.

Selected flow: Air or vacuum pumps, air or other gas compressors 7c9988b6-d0cf-4a08-801a-097d31f374d7
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished steel-reinforced vulcanised-rubber steering hose (`hydraulic_hose`)

One actual hydraulic steering hose design, narrowed from the rubber hydraulic-hose identity. Weigh net installed hose; separately supplied end fittings require separate cards. Exclude engine/steering-assembly inclusions; no assumed hose length or pressure.

Selected flow: Hydraulic hose e2fc1719-69dc-4281-8eae-383af8d9a405
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Formed low-voltage chassis copper wiring harness before final electrical check (`wiring_harness`)

One actual bought bundled/taped/sleeved formed harness at the public intermediate gate, then installed and electrically checked in chassis integration/acceptance. Weigh received and installed mass and record connector/sleeve completeness; do not adopt the public comment assumed1:1 transfer as a quantity factor. Raw insulated wire and already included engine harness are not additional inputs.

Selected flow: Formed wiring harness 795e6116-d121-486f-aa8f-fa78448351f0
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished engine-belt-driven road-bus alternator (`alternator`)

One actual separately supplied starting/generating component of the stated design, narrowing the public internal-combustion-engine electrical-equipment category. Weigh installed net mass and record electrical rating and supplier inclusion. Exclude an engine-included unit; a wind generator or pooled lighting/starting kit is not this atomic component.

Selected flow: Electrical ignition or starting equipment of a kind used for internal combustion engines, generators and cut-outs of a kind used in conjunction with internal combustion engines, electrical lighting or signalling equipment (except filament or discharge lamps), windscreen wipers, defrosters and demisters, of a kind used for cycles or motor vehicles 46a4d7e0-db60-4f6d-a637-28140132c05d
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished road-bus electric starter motor (`starter`)

Selected flow: Electrical ignition or starting equipment of a kind used for internal combustion engines, generators and cut-outs of a kind used in conjunction with internal combustion engines, electrical lighting or signalling equipment (except filament or discharge lamps), windscreen wipers, defrosters and demisters, of a kind used for cycles or motor vehicles 46a4d7e0-db60-4f6d-a637-28140132c05d
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources:

Finished charged lead-acid starter battery (`starter_battery`)

One actual separately installed starter-battery design. Weigh net battery including casing and contained electrolyte; record charge/chemistry/capacity and supplier gate. Expand separate consumer batteries if actually delivered. Local charging uses separately metered electricity; no universal battery count or life.

Selected flow: Finished charged lead-acid starter battery
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_parts.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_parts
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

One formulated mineral-oil steering hydraulic fluid (`hydraulic_oil`)

Only the actual certified single mineral-based hydraulic formulation with at least70% petroleum oil. Retain public Volume m3; meter net fresh fills, returns and recovery, recording actual retained delivery volume. Measured density/temperature may reconcile its kg within M, without replacing the exchange property or assuming reservoir capacity equals fill.

Selected flow: Hydraulic Fluid 30691a38-a947-4b41-991e-194f6c9aa88f
Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_oil_volume.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_oil_volume
Sources:

One formulated mineral engine lubricating oil (`engine_oil`)

Only if this exact certified single formulation is actually freshly supplied for the declared installed engine/gearbox/chassis system. Weigh net fill/top-up and returns; record actual concentration and retained mass. Exclude supplier-prefilled fluids and recovered test fluid; never repeat purchased mixture constituents or prescribe this formulation/fill for all models.

Selected flow: One formulated mineral engine lubricating oil
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

One formulated mineral automatic-transmission fluid (`gearbox_oil`)

Selected flow: One formulated mineral automatic-transmission fluid
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

One 50%-by-mass ethylene-glycol aqueous engine coolant (`coolant`)

Selected flow: One 50%-by-mass ethylene-glycol aqueous engine coolant
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

One mineral-oil lithium-soap chassis grease (`grease`)

Selected flow: One mineral-oil lithium-soap chassis grease
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

One 32.5%-by-mass aqueous diesel-exhaust urea solution (`urea_solution`)

Selected flow: One 32.5%-by-mass aqueous diesel-exhaust urea solution
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Outputs

Process: Factory checks and chassis acceptance (`acceptance`)

Inputs

Product flows

Low-voltage grid electricity (`electricity_acceptance`)

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_energy.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_energy
Sources:

One petroleum diesel grade consumed in factory engine tests (`test_diesel`)

Only this actual certified fossil petroleum grade, narrowing the unspecified public gas-oil identity. Reconcile weighed or density-corrected fills, returns, test consumption and final residual separately. Retained fuel kg is included in M and not emitted at this factory gate. HVO/biodiesel options in manufacturer literature do not prove fossil carbon; alternative fuel requires its own composition/identity.

Selected flow: Diesel fuel 9d258d75-6792-4f1c-9856-81602ed8f816
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_fuel.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_fuel
Sources:

One petroleum diesel grade retained in accepted chassis delivery (`delivery_diesel`)

Selected flow: Diesel fuel 9d258d75-6792-4f1c-9856-81602ed8f816
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_fuel.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_fuel
Sources:

Outputs

Product flows

Accepted complete diesel engine-fitted bodyless road-bus chassis (`finished_chassis`)

The configured complete cabless/bodyless steel ladder-frame rolling chassis, including installed propulsion engine, driveline, axles, suspension, brakes, steering, wheels, declared electrics and actually retained fluids/fuel. It is an incomplete road vehicle awaiting coachwork, but a complete accepted chassis assembly for this reference. Output1kg of measured accepted net M; neither gross ratings nor catalogue running-order weight supply M.

Selected flow: Chassis fitted with engines, for motor vehicles 78532304-4355-400e-8bab-e2f6858050db
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: 1 kg
Value mode: fixed_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: collected_record
Collection protocol: cp_mass
Sources: mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

Waste flows

Contained used mineral steering hydraulic oil (`spent_hydraulic_oil`)

Only actual separately exported used and contaminated petroleum-based steering oil. Weigh receiver-bound mass and record composition/water content and actual treatment gate. Recovered test oil is internal reuse; fresh/drained unused oil is not automatically this used-oil identity.

Selected flow: Used lubricating oil 55d93375-7f04-4166-b2a2-88ce929051a5
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_waste.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_waste
Sources:

Elementary flows

Fossil carbon dioxide from actual factory engine testing (`air_co2`)

Only actual measured post-control release of this single species to immediate air, submedium unspecified. Integrate matched concentration/exhaust volume over actual attributable tests; verify fossil carbon for CO2/CO and separate NO/NO2 speciation. NOx as NO2 equivalent, N2O, long-term air or regulatory limits cannot supply this exchange. No test combustion/emission is mandatory.

Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_emission.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_emission
Sources:

Fossil carbon monoxide from actual factory engine testing (`air_co`)

Selected flow: carbon monoxide (fossil) 08a91e70-3ddc-11dd-924e-0050c2490048
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_emission.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_emission
Sources:

Nitrogen monoxide from actual factory engine testing (`air_no`)

Selected flow: nitrogen monoxide 08a91e70-3ddc-11dd-96ee-0050c2490048
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_emission.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_emission
Sources:

Nitrogen dioxide from actual factory engine testing (`air_no2`)

Selected flow: nitrogen dioxide 08a91e70-3ddc-11dd-96e5-0050c2490048
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_emission.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_emission
Sources:

Process: Dispatch protection (`packout`)

Inputs

Product flows

C-flute corrugated cardboard protection with fibre at least80% (`cardboard`)

Only actual C-flute single-design supplied protection matching the public recycled-containing multi-layer fibreboard identity. Weigh net protection separately; it is excluded from chassis M.

Selected flow: Corrugated cardboard 8bde297e-98df-463f-bcb4-0db52bf6e0b5
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Non-cellular non-adhesive unreinforced LDPE protection film (`film`)

Only actual single LDPE film supplied for dispatch protection, matching public non-laminated/non-supported state. Weigh net film separately and exclude it from M; reusable transport fixtures are not fresh film.

Selected flow: Low-density polyethylene foil (PE-LD) 2cecd3a7-d90e-44b4-aec5-1d9dfb907477
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
Amount rule: Apply normalize_mass to q_item; reference_mass; cp_material.
Value mode: calculated_value
Specificity: product_specific
Normalization basis: per 1 kg reference flow; collected per one accepted finished machine
Basis kind: reference_flow
Evidence kind: calculated_from_collection
Collection protocol: cp_material
Sources:

Outputs

7. Allocation and Co-product Handling

rule_id	applies_to	rule
`allocation_causal`	shared_operations	Separate configurations and orders by direct measurement first. Reconcile shared rail/finish/frame/integration/test electricity and consumables using measured causal material throughput, actual stage time/load and served orders, including idle/rework/reject burden. Unequal chassis are not allocated equally by count by default. Record driver justification, uncertainty and sensitivity from actual foreground records; no universal mass/time factor.
`allocation_receipts`	assemblies	Purchased/customer-furnished frame, engine, gearbox and axle carry actual upstream inventory burdens and gates; they are not zero-burden receipts. Their included components/fluids replace independent inputs and local manufacture. Actual reusable test fixtures/air supply/recovered fluid require causal service/replacement records, not whole-item consumption each chassis.
`allocation_balance`	batch_and_exports	Reconcile receipts, retained installed net mass, WIP, returns/recovery and each exported waste for the same configuration/period. Use actual measured tyre kg/item and fluid density only for physical mass checks; count/Volume properties remain. Separate consumed test fuel and delivery residual. Allocate rejects/rework to accepted units. No automatic avoided-material/disposal credit; real multi-output manufacture needs explicit functions and evidence-based allocation.

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_mass	acceptance	reference_product	calibrated net weighing	model; configuration; serial number; accepted net mass M; scale/tare; installed systems; retained fluids/fuel; accepted geometry; acceptance; temporary/packaging exclusions	Weigh the accepted complete machine on a calibrated scale, excluding transport packaging; reconcile the same configuration and acceptance record.	kg	each complete accepted configuration	same declared production period; disclose gaps	declared engine-fitted chassis factory	accepted net mass per machine	scale calibration; net weigh ticket; complete-chassis acceptance
cp_configuration	frame; integration; acceptance	configuration	BOM/interface/acceptance ledger	model/serial/drawing revision; ladder frame/joints; engine position/specification; gearbox/axles; suspension/brake/wheel/steering; cooling/exhaust/electrics; supplier scope; shipping versus accepted state; site/period; criteria/results	Crosswalk every actual BOM item and operation to an atomic exchange or justified exclusion; verify frame make-or-buy and bought internals. Record one actual configuration and acceptance geometry, excluded temporary seat/controls and retained fluids. Catalogue running-order/gross/axle values cannot supply M.	kg	each build revision/acceptance	same declared production period; disclose gaps	declared engine-fitted chassis factory	one traceable complete configuration	signed BOM/drawing; supplier scope; checks/test results
cp_material	fabrication; finishing; integration; packout	single stock/consumable	net issues and weighing	single grade/design/formulation; state; kg; issues/returns/recovery; measured density/conditions if converted; served orders; accepted count	Weigh each actual specified plate, powder, disc, water, engine/gearbox oil, coolant, grease, exhaust solution and protection separately. Reconcile net fresh make-up, returns and remaining stock. Supplier-prefilled fluids and purchased mixture constituents are not repeated; no universal density, concentration or dose.	kg	each issue/return and batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable net mass / accepted machines of the same configuration	scale; SDS/certificate; inventory/served-order ledger
cp_parts	frame; integration	single installed component	component weighing and completeness	part/design; received/installed kg; actual count; included internals/fluids; country/supply gate; make-or-buy; accepted count	Weigh each net specified frame/rail/crossmember/bolt/nut, engine/gearbox/shaft, axle/suspension/brake/steering/wheel rim, tank/cooling/exhaust/electrical component or use actual verified lot-specific mass/count records. Exclude supplier-included internals and expand actual missing mounts, hubs, brackets, reservoirs, filters, pipe fittings, brake linings, sensors and wiring cards before completeness claims.	kg	each supply lot/build batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable installed mass / accepted machines of the same configuration	scale; component design/certificate; supplier inclusion and BOM
cp_count	integration	bus_tyre	design-specific item count	single tyre design; installed count; receipts/returns; bought inclusions; measured lot-specific kg/item; accepted count	Count actual installed tyres of each selected design, preserving public Number of items. Obtain actual lot-specific net kg/item through calibrated weighing for physical BOM mass reconciliation only; no universal wheel count or part weight.	Item(s)	each supply lot/build batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable installed item count / accepted machines of the same configuration	BOM/count ledger; calibrated part weighing
cp_oil_volume	integration	hydraulic_oil	net formulated-fluid volume	formulation/oil fraction; metered L or m3; fills/returns/recovery; retained fill; actual density/temperature for physical mass; accepted count	Meter actual net mineral steering-fluid supply and retain public Volume; convert1 L =0.001 m3. Reconcile fill/return/recovery/retained amounts. Measure density at stated temperature to check physical kg within M, without replacing Volume or assuming reservoir capacity.	m3	each metered fill/return and batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable net fluid volume / accepted machines of the same configuration	meter calibration; composition; density/temperature and fill balance
cp_energy	fabrication; finishing; frame; integration; acceptance	electricity	meter and causal allocation	stage; voltage/source; kWh; interval; actual load/time; idle/rework; shared total; accepted count	Meter actual stage energy; convert1 kWh =3.6 MJ and reconcile actual causal loads/times and shared measured totals. Engine rated power, bus duty or installed motor rating cannot prove factory consumption.	MJ	each metered interval/batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable electrical energy / accepted machines of the same configuration	meter calibration; bill; causal-load ledger
cp_fuel	acceptance	test_diesel; delivery_diesel	separate consumed/retained fuel ledger	single petroleum grade; fossil/biogenic certificate; fills/returns; consumed kg; retained kg; supplied engine fuel; density/temperature if volume; actual test interval; accepted count	Weigh or meter with actual density/temperature fills, supplier fuel, returns and final residual; determine consumed test fuel from measured balance. Retain delivery residual separately, include its kg in M and exclude supplier-prefilled duplicates. No rated-power times hours fuel estimate without measured relation.	kg	each actual engine test/final fill	same declared production period; disclose gaps	declared engine-fitted chassis factory	separate attributable consumed and retained kg / accepted machines of the same configuration	fuel meter/scale; composition/balance; test/acceptance record
cp_waste	fabrication; finishing; acceptance	single exported waste	segregated export weighing	single waste; alloy/formulation; wet/dry; oil/water/metal content; exported kg; recovery; receiver; accepted count	Weigh each actual offcut, clean chip, spent disc, captured dust, powder overspray, contained cleaning solution and used steering oil separately. Record composition and receiver treatment. Internal recovered fluid is not export; actual direct water release requires separate species/medium cards.	kg	each export and batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable exported waste mass / accepted machines of the same configuration	scale; composition; receiver/treatment receipt
cp_emission	finishing; acceptance	single air species	species-specific post-control monitoring	species; fossil/biogenic origin; medium/submedium; size; measured concentration/exhaust volume/time; identical reference conditions; controls/background; actual interval; accepted count	Measure actual post-control species concentration and exhaust volume on identical sampling/temperature/pressure/moisture conditions; integrate over actual attributable intervals, correct background and record uncertainty. Verify immediate unspecified air and unspecified size where selected. Measure NO and NO2 separately; NOx as NO2 equivalent is insufficient without speciation. CO2/CO need verified fossil carbon; no limit-based or mandatory emission quantity.	kg	representative actual emitting intervals	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable measured species mass / accepted machines of the same configuration	monitoring; sampler/flow calibration; carbon/speciation/medium evidence
cp_water_resource	finishing	groundwater	well meter and aquifer record	site/country; renewable freshwater aquifer; m3; interval; pumping/treatment; reuse; accepted count	Meter actual qualifying factory-well abstraction, expand pumping/treatment and exclude internal circulation. Evidence aquifer freshwater/renewability; no duplicate tap-water receipt.	m3	each metered interval/batch	same declared production period; disclose gaps	declared engine-fitted chassis factory	attributable abstracted volume / accepted machines of the same configuration	meter; aquifer/site evidence; water balance

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
`normalize_mass`	all inventory rows	q_ref = q_item / M; q_item = exchange amount per one accepted finished machine; q_ref = exchange amount per 1 kg reference flow.	q_item; M; cp_mass	q_ref

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
`quality_configuration`	all inventory rows	Use identical model/configuration/period/count for physically measured positive M and every numerator. Reconcile frame/engine/axle supplier completeness, actual retained fluids/fuel, tyre counts/physical mass, steering fluid Volume/density and accepted versus shipping geometry. A catalogue net/running-order/gross rating does not meet cp_mass.	cp_configuration; cp_mass; cp_parts; cp_count; cp_oil_volume; cp_fuel
`quality_coverage`	inventory_and_links	Disclose unresolved identities, actual missing BOM/route cards, measurements, upstream/transport/receiver links and uncertainty. Initial component examples are not a complete bill of materials. Determine local/bought steel/finish, brake/suspension/engine variants and test operations from factory evidence. No universal grade/yield/part mass, fluid fill/density, wheel count, test duration, emission, life or allocation factor.	cp_configuration; cp_material; cp_energy; cp_waste; cp_emission; cp_water_resource
`quality_sources`	architecture_evidence	Mercedes OF1721L/59 physical pp.1–2, printed February2022 on p.2, and Volvo B8R4x2 Euro6 pp.1–4 with2019-11-26 footer on pp.3–4, are historical model-specific evidence only. Mercedes p.2 gives bolted frame, air suspension, drum brakes and running-order weight inclusions; Volvo contrasts shipping geometry, engine/brake/electrical/fuel options. They do not prove universal ladder-frame construction, current conformity, actual net M, factory quantities or service life. No catalogue mass/rating/capacity adopted.	mercedes-of1721-chassis-2022; volvo-b8r-chassis-2019

9. Validation Rules

rule_id	applies_to	rule
`validation_reference`	reference_flow	Require one complete configured bodyless/cabless diesel ladder-frame road-bus chassis, positive physically measured M kg and cp_mass record. Reference output is1kg; use normalize_mass for kg/MJ/m3/Item(s) numerators with unchanged public properties. A complete chassis is not a complete road vehicle; retain actual delivery exclusions and acceptance geometry.
`validation_bom`	inventory	Reconcile actual rails/crossmembers/joints, engine/gearbox/driveline, axles/suspension/wheels, brake/steering, fuel/cooling/exhaust/electrics and fluids with drawings/BOM and supplier gates. Distinguish frame receipt versus local assembly, drum versus disc, actual engine placement, received versus locally filled fluid and consumed versus residual diesel. Expand all actual missing cards/routes before completeness claims.
`validation_identity`	all inventory rows	Verify public type, material/formulation/design, original reference property/unit group, route/state/completeness/geography and official bilingual names. Road engine is not a non-propulsion engine; trailer rim/axle is not an established bus component. NO is not NO2/N2O; fossil carbon is not biogenic, immediate unspecified air not long-term or soil. Groundwater is a resource, tap water a product, contained water/oil a waste, and emitted dust not captured dust.
`validation_claims`	dataset_claims	No complete cradle-to-gate claim without actual route and linked upstream/transport/receiver coverage. Manufacturing mass does not establish equal carrying function, roadworthiness, downstream body fit, lifetime or methodology approval. Independent scientific review remains pending.

10. Published Dataset Profile

Field	Value
dataset_role	Configured foreground engine-fitted bodyless bus-chassis manufacture; heading does not assert publication
downstream_use	secondary_dataset; background_dataset
allowed_use	Same complete chassis configuration manufacture scaled with measured M, with separately declared upstream/transport/treatment links
excluded_use	Complete vehicles/coachwork, road passenger/goods services, use/maintenance/lifetime/end of life, other chassis/propulsion routes and methodology approval
required_metadata	All reference qualifiers; drawings/BOM/serial; frame material/joints/make-or-buy; engine location/duty; driveline/brake/suspension/steering/wheel/electrical/cooling/exhaust design and supplier inclusions; actual formulated fills/residual fuel; calibrated M/tare/delivery exclusions/accepted geometry; actual checks/results; site/period/count; supplier/receiver gates and causal allocation
required_quality_disclosure	Unresolved identities/BOM/routes/measurements/links; actual count/Volume/physical-mass reconciliation; rejects/rework/recovery; allocation/uncertainty and historical evidence limits
update_trigger	Frame/engine/gearbox/axle/brake/suspension/steering/electrical design, supplier completeness, accepted/shipping configuration, fluid/finish formulation, actual manufacture/test plan, site/period or allocation change

11. Data Sources

Source id	Type	Reference	Used for
mercedes-of1721-chassis-2022	handbook	Mercedes-Benz, OF1721L/59 technical sheet, Spanish, physical pp.1–2 (unnumbered); p.2 printed Fecha de impresión: Febrero 2022. https://www.mercedes-benz-bus.com/content/dam/mb/ar/es/models/interurbanos/of1721/OF%201721%20L%2059.pdf	Historical bodyless front-engine chassis and gearbox/axle architecture p.1; bolted ladder frame, air suspension, steering gear, drum/pneumatic brakes, wheels/electrics and empty running-order mass footnote p.2. Footnote includes full fuel, spare wheel, fire extinguisher/toolbox and excludes driver; catalogue mass is not our net M. No mandatory steel grade, local welding/finish, quantities, current conformity or life.
volvo-b8r-chassis-2019	handbook	Volvo Buses, B8R4x2 Euro6 data sheet, printed/physical pp.1–4; footer BED 380858 2019-11-26 on pp.3–4 (URL filename2020 is not the printed edition). https://www.volvobuses.com/content/dam/volvo-buses/markets/master/coaches/chassis/volvo-b8r/specifications/Data-sheet-B8R-4-2-Euro-6-EN-2020.pdf	Historical bodyless rear-engine example and transport-versus-approved wheelbase p.1; actual engine/gearbox/suspension/fuel options p.2; disc brakes, steering/cooling/exhaust and spare-wheel/rim options p.3; separate starting/consumer electrical circuits p.4. Used to require actual configuration and avoid universal drum brakes, engine placement, fossil fuel or battery count; does not prove every B8R is a bolted ladder frame. No rated loads/tank sizes/catalogue masses, conversion factor, test recipe, current emission conformity or life adopted.

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Structured rule index

This index comes from verified structured.yaml and retains the canonical English rule text.

System boundary rules · 4

Rule ID	Applies to	Rule	Source IDs
`boundary_frame`	fabrication; finishing; frame	Frame receipt or actual bolted assembly is required, not mandatory local raw-steel manufacture. Include local cutting/forming/drilling and finishing only when performed; purchased formed/coated rails or complete frame exclude their local stock and upstream operations. Mercedes p.2 supports one bolted ladder-frame example, not mandatory welding, LNE500, a fastener specification or powder coating. Expand actual nuts/washers/brackets, wet paint/solvents, machining fluid, blasting, heat/oven fuels or outsourcing as separate atomic cards before coverage claims.	mercedes-of1721-chassis-2022
`boundary_integration`	integration	Required receipt/BOM verification and installation of actual engine/gearbox/driveline, axles/suspension/wheels, steering/brake circuits and supplied cooling/exhaust/electrics, connections, fills and adjustment. One supplier gate per assembly prevents duplicate compressor/starter/alternator, brakes, oil and wiring. The representative drum/air-bellows route is not universal: an actual disc brake, leaf suspension, different tank/rim or engine-placement route must expand and qualify its own cards. No coachwork or cab is installed within this scope.	mercedes-of1721-chassis-2022, volvo-b8r-chassis-2019
`boundary_acceptance`	acceptance	Chassis acceptance is required. Include physical leak/brake/steering/drivetrain/electrical tests and engine runs only under actual OEM work records, with real criteria/results, duration, loads, fills/returns and monitored releases. No road-test distance, regulatory emission limit, wheel count or fuel-consumption rate is assumed. Reusable support rigs, temporary driver controls and test loads are factory fixtures; actual attributable replacement/service burden is separately evidenced. Downstream bodybuilder wheelbase extension and customer use are outside.
`boundary_emissions`	finishing; acceptance	Record only actual direct releases of individual species after controls. Separate groundwater resource from supplied water and contained wastewater, emitted particulate from collected dust, test-consumed from retained fuel and fossil from biogenic carbon. Actual other air submedia, measured particle fractions or water/soil species require matching cards. An absent card is not evidence of zero release.

Allocation rules · 3

Rule ID	Applies to	Rule
`allocation_causal`	shared_operations	Separate configurations and orders by direct measurement first. Reconcile shared rail/finish/frame/integration/test electricity and consumables using measured causal material throughput, actual stage time/load and served orders, including idle/rework/reject burden. Unequal chassis are not allocated equally by count by default. Record driver justification, uncertainty and sensitivity from actual foreground records; no universal mass/time factor.
`allocation_receipts`	assemblies	Purchased/customer-furnished frame, engine, gearbox and axle carry actual upstream inventory burdens and gates; they are not zero-burden receipts. Their included components/fluids replace independent inputs and local manufacture. Actual reusable test fixtures/air supply/recovered fluid require causal service/replacement records, not whole-item consumption each chassis.
`allocation_balance`	batch_and_exports	Reconcile receipts, retained installed net mass, WIP, returns/recovery and each exported waste for the same configuration/period. Use actual measured tyre kg/item and fluid density only for physical mass checks; count/Volume properties remain. Separate consumed test fuel and delivery residual. Allocate rejects/rework to accepted units. No automatic avoided-material/disposal credit; real multi-output manufacture needs explicit functions and evidence-based allocation.

Validation rules · 4

Rule ID	Applies to	Rule
`validation_reference`	reference_flow	Require one complete configured bodyless/cabless diesel ladder-frame road-bus chassis, positive physically measured M kg and cp_mass record. Reference output is1kg; use normalize_mass for kg/MJ/m3/Item(s) numerators with unchanged public properties. A complete chassis is not a complete road vehicle; retain actual delivery exclusions and acceptance geometry.
`validation_bom`	inventory	Reconcile actual rails/crossmembers/joints, engine/gearbox/driveline, axles/suspension/wheels, brake/steering, fuel/cooling/exhaust/electrics and fluids with drawings/BOM and supplier gates. Distinguish frame receipt versus local assembly, drum versus disc, actual engine placement, received versus locally filled fluid and consumed versus residual diesel. Expand all actual missing cards/routes before completeness claims.
`validation_identity`	all inventory rows	Verify public type, material/formulation/design, original reference property/unit group, route/state/completeness/geography and official bilingual names. Road engine is not a non-propulsion engine; trailer rim/axle is not an established bus component. NO is not NO2/N2O; fossil carbon is not biogenic, immediate unspecified air not long-term or soil. Groundwater is a resource, tap water a product, contained water/oil a waste, and emitted dust not captured dust.
`validation_claims`	dataset_claims	No complete cradle-to-gate claim without actual route and linked upstream/transport/receiver coverage. Manufacturing mass does not establish equal carrying function, roadworthiness, downstream body fit, lifetime or methodology approval. Independent scientific review remains pending.

Processes and inputs/outputs · 6

Process ID	Process name	Input flows	Output flows
`fabrication`	Local rail and crossmember fabrication	2	2
`finishing`	Local steel surface finishing	5	5
`frame`	Frame receipt or bolted assembly	6	0
`integration`	Powertrain and rolling-chassis integration	30	0
`acceptance`	Factory checks and chassis acceptance	3	6
`packout`	Dispatch protection	2	0

Complete field inspector

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Manufacture of diesel engine-fitted bodyless ladder-frame road-bus chassis

Content languages

Readiness

Classification mapping

Source

1. Scope and Applicability

2. Product Category Identity

3. Reference Flow

4. Measurement and Unit Rules

5. System Boundary

Boundary Abstraction

6. Process Inventory Structure

Process Map

Process: Local rail and crossmember fabrication (fabrication)

Inputs

Product flows

Certified hot-rolled HSLA steel plate (hsla_plate)

Low-voltage grid electricity (electricity_fabrication)

Outputs

Waste flows

Untreated clean HSLA steel offcut (steel_offcut)

Clean HSLA steel drilling chips (steel_chip)

Process: Local steel surface finishing (finishing)

Inputs

Product flows

Low-voltage grid electricity (electricity_finishing)

One polyester powder-coating formulation (polyester_powder)

Resin-bonded aluminium-oxide abrasive disc (abrasive_disc)

Supplied drinking-quality cleaning water (water_finishing)

Elementary flows

Abstracted renewable freshwater groundwater (groundwater)

Outputs

Waste flows

Spent resin-bonded aluminium-oxide abrasive disc (spent_disc)

Captured dry HSLA-steel deburring dust (captured_dust)

Collected waste polyester powder overspray (powder_waste)

Contained spent aqueous steel-cleaning solution (cleaning_water)

Elementary flows

Air particulate, particle size unspecified (air_dust)

Process: Frame receipt or bolted assembly (frame)

Inputs

Product flows

Low-voltage grid electricity (electricity_frame)

Finished bolted steel bus ladder-frame assembly (frame_assembly)

Finished formed steel bus-frame longitudinal rail (rail)

Finished steel bus-frame crossmember (crossmember)

Finished hexagonal-head steel frame bolt (frame_bolt)

Finished steel hexagonal frame nut (frame_nut)

Outputs

Process: Powertrain and rolling-chassis integration (integration)

Inputs

Product flows

Low-voltage grid electricity (electricity_integration)

Finished diesel propulsion engine for a road bus (road_engine)

Finished automatic road-bus gearbox assembly (gearbox)

Finished steel road-bus propeller-shaft assembly (propshaft)

Finished rubber bus-suspension air bellows (air_bellows)

Finished hydraulic bus-suspension damper (damper)

Finished steel road-bus wheel rim (wheel_rim)

Finished hydraulic road-bus steering gear (steering_gear)

Finished cast-iron road-bus brake drum (brake_drum)

Finished pneumatic spring parking-brake chamber (spring_brake_chamber)

Finished pneumatic service-brake control valve (brake_valve)

Finished steel road-bus air-brake pipe (brake_pipe)

Finished steel road-bus diesel-fuel tank (fuel_tank)

Finished aluminium road-bus engine radiator (radiator)

Finished diesel SCR exhaust-treatment assembly (aftertreatment)

Finished steering front-axle assembly supplied from CN (front_axle)

Finished rear drive-axle assembly supplied from CN (rear_axle)

One new pneumatic rubber road-bus tyre design (bus_tyre)

Finished engine-driven brake-air compressor (air_compressor)

Finished steel-reinforced vulcanised-rubber steering hose (hydraulic_hose)

Formed low-voltage chassis copper wiring harness before final electrical check (wiring_harness)

Finished engine-belt-driven road-bus alternator (alternator)

Finished road-bus electric starter motor (starter)

Finished charged lead-acid starter battery (starter_battery)

One formulated mineral-oil steering hydraulic fluid (hydraulic_oil)

One formulated mineral engine lubricating oil (engine_oil)

One formulated mineral automatic-transmission fluid (gearbox_oil)

One 50%-by-mass ethylene-glycol aqueous engine coolant (coolant)

Process: Local rail and crossmember fabrication (`fabrication`)

Certified hot-rolled HSLA steel plate (`hsla_plate`)

Low-voltage grid electricity (`electricity_fabrication`)

Untreated clean HSLA steel offcut (`steel_offcut`)

Clean HSLA steel drilling chips (`steel_chip`)

Process: Local steel surface finishing (`finishing`)

Low-voltage grid electricity (`electricity_finishing`)

One polyester powder-coating formulation (`polyester_powder`)

Resin-bonded aluminium-oxide abrasive disc (`abrasive_disc`)

Supplied drinking-quality cleaning water (`water_finishing`)

Abstracted renewable freshwater groundwater (`groundwater`)

Spent resin-bonded aluminium-oxide abrasive disc (`spent_disc`)

Captured dry HSLA-steel deburring dust (`captured_dust`)

Collected waste polyester powder overspray (`powder_waste`)

Contained spent aqueous steel-cleaning solution (`cleaning_water`)

Air particulate, particle size unspecified (`air_dust`)

Process: Frame receipt or bolted assembly (`frame`)

Low-voltage grid electricity (`electricity_frame`)

Finished bolted steel bus ladder-frame assembly (`frame_assembly`)

Finished formed steel bus-frame longitudinal rail (`rail`)

Finished steel bus-frame crossmember (`crossmember`)

Finished hexagonal-head steel frame bolt (`frame_bolt`)

Finished steel hexagonal frame nut (`frame_nut`)

Process: Powertrain and rolling-chassis integration (`integration`)

Low-voltage grid electricity (`electricity_integration`)

Finished diesel propulsion engine for a road bus (`road_engine`)

Finished automatic road-bus gearbox assembly (`gearbox`)

Finished steel road-bus propeller-shaft assembly (`propshaft`)

Finished rubber bus-suspension air bellows (`air_bellows`)

Finished hydraulic bus-suspension damper (`damper`)

Finished steel road-bus wheel rim (`wheel_rim`)

Finished hydraulic road-bus steering gear (`steering_gear`)

Finished cast-iron road-bus brake drum (`brake_drum`)

Finished pneumatic spring parking-brake chamber (`spring_brake_chamber`)

Finished pneumatic service-brake control valve (`brake_valve`)

Finished steel road-bus air-brake pipe (`brake_pipe`)

Finished steel road-bus diesel-fuel tank (`fuel_tank`)

Finished aluminium road-bus engine radiator (`radiator`)

Finished diesel SCR exhaust-treatment assembly (`aftertreatment`)

Finished steering front-axle assembly supplied from CN (`front_axle`)

Finished rear drive-axle assembly supplied from CN (`rear_axle`)

One new pneumatic rubber road-bus tyre design (`bus_tyre`)

Finished engine-driven brake-air compressor (`air_compressor`)

Finished steel-reinforced vulcanised-rubber steering hose (`hydraulic_hose`)

Formed low-voltage chassis copper wiring harness before final electrical check (`wiring_harness`)

Finished engine-belt-driven road-bus alternator (`alternator`)

Finished road-bus electric starter motor (`starter`)

Finished charged lead-acid starter battery (`starter_battery`)

One formulated mineral-oil steering hydraulic fluid (`hydraulic_oil`)

One formulated mineral engine lubricating oil (`engine_oil`)

One formulated mineral automatic-transmission fluid (`gearbox_oil`)

One 50%-by-mass ethylene-glycol aqueous engine coolant (`coolant`)

One mineral-oil lithium-soap chassis grease (`grease`)

One 32.5%-by-mass aqueous diesel-exhaust urea solution (`urea_solution`)

Process: Factory checks and chassis acceptance (`acceptance`)

Low-voltage grid electricity (`electricity_acceptance`)

One petroleum diesel grade consumed in factory engine tests (`test_diesel`)

One petroleum diesel grade retained in accepted chassis delivery (`delivery_diesel`)

Accepted complete diesel engine-fitted bodyless road-bus chassis (`finished_chassis`)

Contained used mineral steering hydraulic oil (`spent_hydraulic_oil`)

Fossil carbon dioxide from actual factory engine testing (`air_co2`)

Fossil carbon monoxide from actual factory engine testing (`air_co`)

Nitrogen monoxide from actual factory engine testing (`air_no`)

Nitrogen dioxide from actual factory engine testing (`air_no2`)

Process: Dispatch protection (`packout`)

C-flute corrugated cardboard protection with fibre at least80% (`cardboard`)

Non-cellular non-adhesive unreinforced LDPE protection film (`film`)