Machinery parts, non-electrical n.e.c.

1. Scope and Applicability

This PCR applies to finished, non-electrical parts for general-purpose machinery that fall within the residual product boundary of CPC 3.0 subclass 43949. It covers factory-gate manufacture of one declared part from purchased material or a purchased near-net precursor through the operations actually performed, including forming or cutting, machining, joining, heat treatment, cleaning, surface treatment, inspection, and final acceptance.

The data package shall identify one concrete part and one actual manufacturing route. The representative route is a machined non-alloy steel part; it does not authorize substitution of an umbrella material flow for the actual alloy, form, consumable, waste, or emission. Electrical parts, complete machines, parts specifically assigned to CPC 43941-43944, special-purpose machinery parts, installation and repair services, packaging, distribution after the factory gate, use, and end-of-life are outside this PCR.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.general-purpose-machinery.machinery-parts-non-electrical-n-e-c
classification_refs	CPC 3.0: 43949, Machinery parts, non-electrical n.e.c.
covered_products	Finished non-electrical parts for the goods of CPC classes 4391-4393 that are not separately described in CPC 43941-43944; standard or customized parts are covered when the concrete product and route are declared.
excluded_products	Electrical machinery parts; parts classified in CPC 43941-43944; special-purpose machinery parts; complete machinery; maintenance services; packaging; use-stage and end-of-life activities.
representative_product	One quality-accepted machined non-alloy steel mechanical part with declared drawing, grade, dimensions, tolerances, and surface condition.
production_route	Purchased concrete material or near-net precursor; operation-specific forming/cutting, machining, joining, heat treatment, cleaning or surface treatment; inspection and acceptance. Operations not performed are excluded and disclosed.
market_state	Finished, cleaned, quality-accepted, unpackaged part at the manufacturer's factory gate.

3. Reference Flow

Field	Value
What	A finished non-electrical machinery part that provides the declared mechanical fit, support, motion-transfer, sealing, housing, or load-bearing function in general-purpose machinery.
How much	1 kg net mass of accepted finished part, excluding packaging.
How well	Conforms to the declared drawing or purchase specification for material grade, geometry, tolerances, heat-treatment state, surface condition, and acceptance criteria.
How long or cycle	One delivered factory-gate part; no service-life performance is claimed unless a study adds and substantiates it.
reference_flow_link	finished_machinery_part

Field	Value
Reference amount	1 kg
Reference product flow	Standard mechanical components 823b5c17-40c2-4039-91ac-0a648ef9b910
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	part name and drawing/revision; CPC applicability; material grade and input form; net part mass; dimensions and tolerance class; manufacturing operations; heat-treatment state; surface-treatment state; accepted/rejected quantity; factory-gate geography; reference period; allocation method

When constructing a foreground data package, every required qualifier shall be declared in metadata, process notes, the reference-flow comment, the product description, or an equivalent field. A missing qualifier makes the reference-flow definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_net_mass	finished reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure accepted part mass after all declared manufacturing and cleaning operations and before packaging; exclude fixtures, reusable carriers, temporary protective media, and packaging.
material_mass_basis	solid material inputs and solid wastes	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use batch issue, return, stock-change, and waste records on a consistent as-received basis; record alloy grade and physical form separately.
electricity_conversion	purchased electricity	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve the meter reading and convert kWh to MJ using 1 kWh = 3.6 MJ; disclose the allocation of shared meters to the part route.
gas_volume_conditions	oxygen, carbon dioxide product gas, and natural gas	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	Record each gas separately and declare reference temperature, pressure, composition or grade, and meter or supplier basis; never aggregate gas species.
batch_normalization	all inventory exchanges	row-specific property	row-specific unit	Normalize batch totals by accepted finished-part mass. Keep the unnormalized batch quantity, accepted mass, reject mass, and calculation trace.

5. System Boundary

rule_id	Applies to	Rule	source_ids
boundary_gate_to_gate	foreground manufacturing	Start with concrete purchased materials or near-net precursors entering the manufacturing boundary and end with the finished, cleaned, accepted, unpackaged part at the factory gate. Include only operations actually performed and identify forming/cutting, machining, joining, heat treatment, cleaning, surface treatment, inspection, and internal handling separately in source records.	un-cpc-3-0-structure-2025; eu-commission-2021-2053-fabricated-metal-products
boundary_direct_exchanges	foreground inventory	Include every direct material, electricity, fuel, process-water, process-chemical, gas, waste, wastewater, and elementary-emission exchange attributable to the declared route. Shared utilities may be allocated only under Section 7.	eu-commission-2021-2053-fabricated-metal-products
boundary_upstream_links	purchased inputs	Link each purchased input to an upstream dataset matching material or chemical identity, grade or concentration, product state, geography, technology, and delivery boundary; do not replace a concrete input with an unspecified umbrella flow.	eu-commission-2021-2053-fabricated-metal-products
boundary_exclusions	downstream and capital activities	Exclude packaging, distribution after the factory gate, use, maintenance, end-of-life, employee travel, and capital equipment unless the study goal explicitly expands the boundary and reports the expansion separately.	un-cpc-3-0-structure-2025

Boundary Abstraction

Field	Value
declared_starting_condition	Concrete purchased material or purchased near-net precursor received at the manufacturing site, with supplier identity, grade, form, mass, and delivery boundary declared.
starting_condition_role	Upstream-linked product input to the foreground manufacturing unit process.
product_classification_scope	Residual non-electrical machinery parts in CPC 3.0 subclass 43949; one concrete part is modelled per data package.
recursive_input_rule	A purchased input already within the same product category remains an explicit product input with its own supplier dataset and starting condition; do not recursively apply this PCR or absorb it into the reference output.
upstream_dataset_requirement	Use an upstream dataset matching the concrete material or part identity, grade, state, geography, technology, and supplier gate. Proxy use requires explicit justification and uncertainty disclosure.
disclosure	Declare the part drawing/revision, material and precursor state, operations included or absent, facility and period, supplier-data coverage, shared-meter allocation, waste destinations, and every boundary expansion.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
part_manufacturing	Manufacture and acceptance of non-electrical machinery part	required	Always; the unit process contains only the route operations actually performed, and each absent operation is disclosed.	Foreground conversion of concrete material or near-net precursor into the accepted factory-gate part.	1 kg accepted finished unpackaged part

Process: Manufacture and acceptance of non-electrical machinery part (part_manufacturing)

Inputs

Product flows

Cold-drawn non-alloy steel bar for the representative machining route (steel_bar_stock)

Record this row only when the declared part is manufactured from cold-drawn non-alloy steel bar. Other material routes shall add separate cards for each concrete material and form; this row shall never stand for mixed or unspecified materials.

• Selected flow: Cold-drawn non-alloy steel bar
• Flow property / unit: Mass / kg
• Amount rule: measured bar mass issued to the batch minus unused bar returned to controlled stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_mass
• Sources: eu-commission-2021-2053-fabricated-metal-products

Purchased electrical energy (electricity)

Record metered electrical energy for the declared route, including attributable machine tools, pumps, extraction, compressed-air generation, cleaning and inspection equipment; allocate shared meters under Section 7.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: metered or defensibly allocated electricity converted from kWh to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_electricity
• Sources: eu-commission-2021-2053-fabricated-metal-products

Process water (process_water)

Record process water that crosses the boundary for metalworking-fluid make-up, washing, rinsing, or declared surface treatment. Exclude closed-loop recirculation from repeated input accounting and disclose make-up and purge separately.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: metered or tank-balance make-up water used by the declared operations
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_water
• Sources: eu-commission-2021-2053-fabricated-metal-products

Water-miscible metalworking-fluid concentrate (metalworking_fluid_concentrate)

Record the concrete concentrate only when used for cutting, grinding, or forming. Declare product name, supplier, concentration, density, and whether the amount is concentrate or prepared emulsion.

• Selected flow: Water-miscible metalworking-fluid concentrate
• Flow property / unit: Mass / kg
• Amount rule: purchased or issued concentrate mass corrected for stock change and returns
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_chemicals
• Sources: eu-commission-2021-2053-fabricated-metal-products

Industrial oxygen for cutting or joining (industrial_oxygen)

Record industrial oxygen only when consumed by the declared thermal cutting or joining operation. Purity, supply state, pressure, reference conditions, and on-site generation boundary shall be declared.

• Selected flow: Industrial oxygen bd4b0f96-2090-4806-a648-335ab20ff401
• Flow property / unit: Volume / m3
• Amount rule: metered delivered volume at declared reference conditions
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_gases
• Sources: eu-commission-2021-2053-fabricated-metal-products

Carbon dioxide shielding gas (carbon_dioxide_shielding_gas)

Record carbon dioxide product gas only when used as welding shielding gas. Declare grade, supplier, pressure, reference conditions, and fossil or biogenic origin.

• Selected flow: Carbon dioxide 27f41c1c-535e-4d2a-bce9-2c7f4de11549
• Flow property / unit: Mass / kg
• Amount rule: supplier-delivered mass or cylinder inventory change attributable to the declared joining operation
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_gases
• Sources: eu-commission-2021-2053-fabricated-metal-products

Gaseous natural gas for thermal operations (natural_gas)

Record natural gas only when burned in a declared furnace, oven, dryer, or other directly controlled thermal operation. Declare composition, net calorific value, meter reference conditions, and delivery boundary.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume / m3
• Amount rule: metered delivered volume at declared reference conditions
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_fuel_gas
• Sources: eu-commission-2021-2053-fabricated-metal-products

Sodium hydroxide for alkaline cleaning or surface treatment (sodium_hydroxide)

Record sodium hydroxide only when a declared alkaline cleaning or surface-treatment bath consumes it. Report pure NaOH-equivalent mass and retain solution concentration and supplied mass.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass / kg
• Amount rule: supplied solution mass multiplied by measured or supplier-certified NaOH mass fraction, corrected for stock change
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_process_chemicals
• Sources: eu-commission-2021-2053-fabricated-metal-products

Waste flows

Elementary flows

Outputs

Product flows

Accepted finished non-electrical machinery part (finished_machinery_part)

This is the reference product after the declared manufacturing, cleaning, inspection, and acceptance operations and before packaging.

• Selected flow: Standard mechanical components 823b5c17-40c2-4039-91ac-0a648ef9b910
• Flow property / unit: Mass / kg
• Amount rule: normalize accepted net product mass to exactly 1 kg; retain measured batch output and reject mass
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_output
• Sources: un-cpc-3-0-structure-2025

Waste flows

Segregated steel swarf from machining (steel_swarf)

Record steel swarf removed by machining as a waste output. Declare alloy family, coolant or oil carryover, weighing basis, storage moisture, and receiving treatment or recycling route.

• Selected flow: Steel swarf 6a16eab5-8097-4e37-8d28-aa1e81b8bb5c
• Flow property / unit: Mass / kg
• Amount rule: measured net swarf mass leaving the process after documented drainage condition
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources: eu-commission-2021-2053-fabricated-metal-products

Spent metalworking fluid sent to treatment (waste_metalworking_fluid)

Record spent metalworking fluid only when it leaves the foreground process for treatment or disposal. Declare fluid family, water and oil content, contaminants, drainage basis, and destination.

• Selected flow: Waste metalworking fluid 2468f4c0-46fa-4a8b-8075-686cf7391b00
• Flow property / unit: Mass / kg
• Amount rule: measured transferred mass corrected for container tare and retained reusable fluid
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources: eu-commission-2021-2053-fabricated-metal-products

Metal surface-treatment wastewater (surface_treatment_wastewater)

Record this wastewater only when aqueous cleaning or surface treatment produces a separately managed discharge. Declare source operation, pH, principal dissolved metals or treatment chemicals, suspended solids, water content, and destination.

• Selected flow: Metal surface-treatment wastewater
• Flow property / unit: Mass / kg
• Amount rule: metered discharge or tank-balance mass leaving the foreground process
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater
• Sources: eu-commission-2021-2053-fabricated-metal-products

Elementary flows

Direct fossil carbon dioxide to air (fossil_carbon_dioxide)

Record only direct fossil carbon dioxide released by foreground fuel combustion or vented fossil carbon dioxide shielding gas. Upstream electricity emissions are excluded from this row and belong to the electricity supply dataset.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: measured direct release or calculation from foreground fuel/gas quantity, documented carbon content, oxidation, and fossil fraction
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted finished machinery part
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_direct_co2
• Sources: eu-commission-2021-2053-fabricated-metal-products

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoid	separable products, routes, batches, and operations	Avoid allocation by collecting product-, batch-, route-, and operation-specific records or by subdividing independently measurable processes.	eu-recommendation-2021-2279-environmental-footprint
allocation_physical	unavoidable shared inputs and emissions	When subdivision is not possible, use a documented causal physical relationship such as metered energy, machine time, treatment area, gas use, or bath loading that represents the driver of the shared exchange; do not default to mass merely because the reference flow is mass-based.	eu-recommendation-2021-2279-environmental-footprint
allocation_other	no defensible physical relationship	Use another relationship, including economic allocation, only after documenting why subdivision and causal physical allocation are infeasible; retain product-specific quantities, prices, period, currency, and sensitivity results.	eu-recommendation-2021-2279-environmental-footprint
allocation_waste	steel swarf, spent fluid, and wastewater	Keep these outputs as waste flows at the foreground gate. Do not subtract an avoided-product credit inside this unit process unless the declared downstream methodology explicitly requires it and the alternative result is reported transparently.	eu-recommendation-2021-2279-environmental-footprint

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_material_mass	part_manufacturing	concrete solid material input	purchase, issue, return and stock record	material identity; grade; form; supplier; batch; issued mass; returned mass; opening and closing stock	calibrated scale and inventory reconciliation	kg	each batch, reconciled monthly	representative continuous 12-month period or disclosed campaign	all included production lines	issued minus returned material, normalized by accepted product mass	scale calibration; stock reconciliation; supplier certificate; batch trace
cp_electricity	part_manufacturing	purchased electricity	meter and machine log	meter id; start/end readings; machine state; operation; batch; shared-load basis	dedicated meter preferred; otherwise documented submeter or engineering allocation	kWh and MJ	each batch or interval no longer than one month	same period as product output	all included machines and attributable auxiliaries	sum attributable kWh, convert to MJ, normalize by accepted product mass	meter calibration; tariff or utility reconciliation; allocation trace
cp_process_water	part_manufacturing	process-water make-up	meter, tank and batch record	source; meter readings; tank changes; operation; recirculation; purge; batch	dedicated meter or tank balance	kg or m3 with density	each batch or monthly	same period as product output	all included water-using operations	count boundary-crossing make-up once; normalize by accepted product mass	meter calibration; tank balance; density basis
cp_process_chemicals	part_manufacturing	metalworking fluid and sodium hydroxide	purchase, issue, concentration and stock record	product; supplier; lot; supplied mass; concentration; density; opening/closing stock; returned mass; operation	weighed issue and stock reconciliation; laboratory or supplier concentration	kg	each batch, reconciled monthly	same period as product output	all included chemical-using operations	calculate concrete product or pure-substance mass, normalize by accepted product mass	scale calibration; certificate of analysis; concentration test; stock reconciliation
cp_process_gases	part_manufacturing	oxygen and carbon-dioxide process gas	flowmeter or cylinder inventory	gas identity; grade; supplier; pressure; temperature; start/end cylinder mass or volume; operation; batch	calibrated flowmeter or cylinder mass balance	m3 or kg	each batch	same period as product output	all included cutting and joining operations	aggregate each gas separately at declared reference conditions, normalize by accepted product mass	meter calibration; supplier certificate; cylinder reconciliation
cp_fuel_gas	part_manufacturing	gaseous natural gas	meter and supplier record	meter readings; temperature; pressure; composition; net calorific value; operation; batch	calibrated dedicated meter or documented allocation from site meter	m3	each batch or monthly	same period as product output	all included thermal operations	normalize reference-condition volume by accepted product mass	meter calibration; supplier statement; allocation trace
cp_product_output	part_manufacturing	accepted reference product	production and quality record	part id; drawing revision; batch; produced count; accepted count; reject count; net mass; rework status	calibrated scale linked to quality acceptance	kg and item	each batch	same period as all inputs	all included products and rejects	sum accepted net mass; normalize inventory to 1 kg	scale calibration; inspection record; batch genealogy
cp_waste_mass	part_manufacturing	steel swarf and spent metalworking fluid	waste transfer and scale record	waste identity; source operation; gross/tare/net mass; moisture or water/oil content; destination; date; batch	calibrated scale or verified waste contractor ticket	kg	each transfer, assigned to batches or period	same period as product output	all included waste collection points	subtract tare and retained reusable material, normalize by accepted product mass	scale calibration; transfer note; composition or drainage record
cp_wastewater	part_manufacturing	metal surface-treatment wastewater	discharge meter, tank and analytical record	source operation; volume or mass; density; pH; principal dissolved metals; suspended solids; treatment; destination; batch	calibrated meter or tank balance plus representative analysis	kg or m3 with density	each discharge and representative analysis	same period as product output	all included aqueous treatment discharges	aggregate only the concrete wastewater stream, normalize by accepted product mass	meter calibration; laboratory report; discharge or transfer record
cp_direct_co2	part_manufacturing	direct fossil carbon dioxide	stack measurement or fuel/gas calculation record	source operation; measured CO2; fuel/gas amount; carbon content; oxidation; fossil fraction; calculation version	direct measurement preferred; otherwise transparent stoichiometric calculation from foreground records	kg	each batch or monthly	same period as product output	all direct combustion and shielding-gas releases	sum direct fossil CO2 only, normalize by accepted product mass	instrument calibration or supplier composition; calculation audit

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_normalization	every inventory row	normalized exchange = attributable batch exchange / accepted net batch product mass	attributable exchange; accepted net product mass	row quantity per 1 kg accepted finished part	eu-commission-2021-2053-fabricated-metal-products
calc_naoh_pure_mass	sodium_hydroxide	pure NaOH-equivalent mass = supplied solution mass × measured or supplier-certified NaOH mass fraction	solution mass; NaOH mass fraction	kg Sodium hydroxide
calc_fossil_co2	fossil_carbon_dioxide	direct fossil CO2 = measured direct fossil CO2; if calculated, sum carbon-bearing foreground gas or fuel × documented carbon content × oxidation fraction × fossil fraction × 44/12, using mutually consistent mass units	gas/fuel quantity; carbon content; oxidation fraction; fossil fraction; direct measurement when available	kg carbon dioxide (fossil)
calc_material_balance	solid material route	reconcile concrete solid material input with accepted product, rejects, swarf, other separately named solid wastes, stock change, and measured process losses; investigate and disclose any residual rather than creating an unspecified waste row	issued/returned material; accepted product; rejects; each solid waste; stock change	material-balance residual and completeness finding	eu-commission-2021-2053-fabricated-metal-products

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	reference product and material inputs	Use one concrete part identity and one concrete flow per material, consumable, waste, and emission; retain drawing revision, material certificate, supplier and batch trace.	product specification; material certificate; UUID audit or documented unresolved identity
dq_measurement	all measured exchanges	Use calibrated meters or scales and retain raw readings, units, conversions, allocation keys, zero/negative-value explanations, and reconciliation to invoices or transfer records.	calibration certificates; raw logs; reconciliation and calculation files
dq_temporal	foreground dataset	Use a continuous representative 12-month period where available; a shorter campaign shall state dates, production volume, operating modes, abnormal events, and representativeness limits.	dated production, meter, stock and waste records
dq_completeness	declared manufacturing route	Cover every operation actually performed and every direct atomic exchange; separately name additional materials, chemicals, fuels, wastes, wastewater streams, and elementary emissions not represented by the minimum inventory above.	route map; mass and energy reconciliation; completeness review
dq_supplier_data	upstream-linked inputs	Document supplier dataset identity, geography, technology, product state, time period, delivery boundary, substitutions, and uncertainty.	supplier declaration; dataset metadata; proxy justification
dq_range_gap	all important flows	Foreground records remain mandatory because no externally inferred empirical range met the two-independent-source requirement. Do not treat absence of a range as permission to use a default amount.	manifest range-evidence needs; collection-protocol records

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_identity	product category and reference flow	Confirm CPC 43949 applicability, exclusion of electrical and separately classified parts, exact canonical PCR id, 1 kg accepted unpackaged output, and all required product qualifiers.	un-cpc-3-0-structure-2025
validate_route	process map and boundary	Confirm that each performed operation is disclosed, each absent operation is excluded, and each purchased input has a matching upstream dataset or documented proxy.	eu-commission-2021-2053-fabricated-metal-products
validate_atomic_inventory	process inventory	Reject umbrella or combined selected flows. Electricity, water, each gas, each chemical, each waste stream, each wastewater stream, and each elementary emission shall remain separate atomic rows with route conditions.	eu-commission-2021-2053-fabricated-metal-products
validate_normalization	quantities and units	Recalculate every normalized row from retained batch data; verify the kWh-to-MJ conversion, gas reference conditions, concentration calculations, accepted output mass, and no double counting of recirculated water or fluid.	eu-commission-2021-2053-fabricated-metal-products
validate_mass_balance	solid material route	Reconcile concrete material input, accepted product, rejects, swarf, each other solid waste, stock change, and measured losses; unresolved residuals are findings, not unnamed waste flows.	eu-commission-2021-2053-fabricated-metal-products
validate_emissions	direct fossil carbon dioxide	Confirm that only direct foreground fossil CO2 is recorded, the measured or calculation basis is retained, fossil fraction is declared, and upstream electricity emissions are excluded.	eu-commission-2021-2053-fabricated-metal-products
validate_allocation	shared and multifunctional operations	Confirm that subdivision was attempted first and that every remaining allocation key follows a documented causal physical relationship or a justified last-resort relationship with sensitivity information.	eu-recommendation-2021-2279-environmental-footprint
validate_uuid_status	inventory identity	Confirm each stored UUID by public state-100 direct read. Keep unresolved rows blank and visible; never substitute a rejected, narrower, broader, wrong-state, wrong-classification, or bilingual-conflicted candidate.

10. Published Dataset Profile

Field	Value
dataset_role	foreground unit_process dataset for manufacture and acceptance of one declared non-electrical machinery part
downstream_use	secondary_dataset; background_dataset
allowed_use	Attributional cradle-to-gate modelling of a matching finished non-electrical general-purpose machinery part with compatible drawing, material, route, geography, technology, period, boundary, and allocation.
excluded_use	Electrical parts; parts in CPC 43941-43944; special-purpose machinery parts; complete machines; service-life comparisons without functional equivalence; packaged product; downstream distribution, use, maintenance, and end-of-life.
required_metadata	canonical PCR id; CPC applicability; part and drawing/revision; material grade and form; net mass; route operations; heat and surface state; facility geography; period; meter and allocation coverage; accepted/reject mass; upstream datasets; waste destinations; unresolved UUIDs
required_quality_disclosure	primary-data share; metering and scale coverage; calibration; temporal representativeness; supplier-data quality; proxy use; mass-balance residual; shared-meter allocation; direct-emission method; missing range evidence; uncertainty and data gaps
update_trigger	Change in part drawing or material grade; route, machine, heat treatment or surface treatment; supplier mix; energy or gas source; facility or geography; allocation method; direct-emission method; waste destination; or a newly confirmed UUID or compatible independent range evidence.

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	United Nations Statistics Division, CPC Version 3.0 Structure, 30 June 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-06)	Product-category identity, residual hierarchy, and exclusions by classification.
eu-commission-2021-2053-fabricated-metal-products	official_guidance	Commission Decision (EU) 2021/2053 of 8 November 2021 on the sectoral reference document for the fabricated metal products manufacturing sector. https://publications.europa.eu/resource/cellar/1b58f2a1-4d96-11ec-91ac-01aa75ed71a1.0006.03/DOC_1 (retrieved 2026-09-06)	Operation-dependent manufacturing process decomposition; monitoring of energy, material, metalworking-fluid, water, waste, and related environmental performance.
eu-recommendation-2021-2279-environmental-footprint	official_guidance	Commission Recommendation (EU) 2021/2279 of 15 December 2021 on the use of Environmental Footprint methods. https://publications.europa.eu/resource/cellar/af96b549-6912-11ec-9136-01aa75ed71a1.0006.01/DOC_1 (retrieved 2026-09-06)	Multi-functionality hierarchy: subdivision or system expansion, physical relationship, then another justified relationship.