Medical, surgical, dental or veterinary furniture; barbers' chairs and similar chairs, having rotating as well as both reclining and elevating movements

1. Scope and Applicability

This PCR covers cradle-to-factory-gate production of one complete item of special-purpose medical, surgical, dental or veterinary furniture. It also covers a complete barber's chair or similar chair only when the chair has rotating, reclining and elevating movements. Covered examples include operating and examination tables, mechanically adjustable hospital beds, dental chairs, treatment couches and corresponding veterinary furniture when their special furniture function determines product identity.

The PCR applies to manually, hydraulically, pneumatically or electrically adjusted products and to products with upholstered or non-upholstered contact surfaces. Product configuration, intended use, adjustment mechanism, load/performance class, net mass and market state must be declared. The foreground boundary includes purchased-material receipt, component preparation, fabrication, in-house surface treatment where applicable, final assembly, factory testing and packaging.

Ordinary domestic or office furniture without the special-purpose function, wheelchairs, standalone medical or dental instruments, diagnostic apparatus, sterilizers, separately sold replacement parts, building installation, distribution, use, maintenance, repair and end-of-life are excluded. A supplied dental chair that incorporates dental equipment remains in scope as furniture only for the furniture manufacturing inventory; separately modelled dental equipment must use its own applicable methodology. Source un-cpc-3-0-structure-2025 establishes the CPC identity, while epd-norway-npcr-026-2024 supports the complete-furniture, component, electrically operated furniture and surface-treatment context.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.medical-appliances-precision-and-optical-instruments-watches-and-clocks.medical-surgical-dental-or-veterinary-furniture-barbers-chairs-and-similar-chairs-havin-528e83f7
classification_refs	CPC 3.0: 48180 — Medical, surgical, dental or veterinary furniture; barbers' chairs and similar chairs, having rotating as well as both reclining and elevating movements
covered_products	Complete medical, surgical, dental or veterinary furniture; complete barber's or similar chairs with rotating, reclining and elevating movements
excluded_products	Ordinary furniture; wheelchairs; standalone instruments, diagnostic apparatus and sterilizers; parts sold separately; distribution, use and end-of-life services
representative_product	One market-ready complete adjustable furniture item at the manufacturer's factory gate
production_route	Purchased materials and components → component preparation and fabrication → conditional surface treatment → assembly, factory testing and packaging
market_state	Finished, quality-released, packaged product at factory gate; new production unless a remanufactured route is separately declared

3. Reference Flow

Field	Value
What	Provision at the factory gate of one complete furniture item that performs the declared medical, surgical, dental, veterinary or qualifying multi-motion chair function
How much	One finished item
How well	Meets the manufacturer's declared intended use, adjustment functions, load/performance class, dimensional specification and quality-release criteria
How long or cycle	One manufacturing batch; service life and use-stage performance are outside this cradle-to-gate reference and must be declared separately if used downstream
reference_flow_link	The measured net product mass of the one finished item links the count-based declared unit to the mass-based TianGong reference product flow

Field	Value
Reference amount	Measured net mass in kg of one quality-released finished item, excluding transport packaging
Reference product flow	Medical, surgical, dental or veterinary furniture, barbers' chairs and similar chairs, having rotating as well as both reclining and elevating movements e39dcb5d-76b1-4daa-b234-4016b382ad57
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	product subtype and intended use; model/configuration; manual, hydraulic, pneumatic or electric adjustment route; included electrical/electronic and dental-equipment components; upholstery and surface-finish specification; load/performance class; net product mass; packaging configuration and mass; manufacturing site and geography; reporting period; new or declared remanufactured market state

When constructing a foreground data package, every Required qualifiers item must be declared in dataset metadata, process notes, the reference-flow comment, product description or an equivalent field. Missing qualifiers make the reference-flow definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_item_mass	reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure the net mass of one quality-released product after final assembly and testing and before transport packaging; record packaging separately.
component_count_to_mass	purchased components and packaging	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert purchase counts to dry supplied mass using batch-specific weighing or documented supplier mass; retain count and conversion evidence.
electricity_energy_basis	purchased electricity	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve meter readings and convert billed electrical energy to MJ with the declared exact unit identity; disclose grid geography, voltage level and loss boundary.
gas_volume_basis	gaseous natural gas	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	Record metered gas volume and the billing or reference temperature and pressure; do not mix uncorrected and standard volumes.
one_item_normalization	all inventory rows	row-specific	row-specific	Allocate or calculate each exchange for the same reporting period, then normalize to one conforming finished item and disclose its net mass.

5. System Boundary

The foreground system begins when purchased materials, components, packaging, electricity, fuel and process water cross the manufacturing-site gate. It ends when the complete item has passed factory testing and is packaged for dispatch. Upstream production datasets for every purchased input are linked as background; they are not recreated inside the foreground process.

rule_id	Applies to	rule	source_ids
boundary_include_manufacturing	cradle-to-gate foreground	Include onsite component preparation, cutting/forming/machining/welding, conditional surface treatment, assembly, factory testing, rework attributable to conforming output and packaging.	epd-norway-npcr-026-2024
boundary_include_surface_treatments	any applied finish	Declare each applied surface-treatment material and its onsite utilities, wastes and direct emissions even when the treatment is a small share of product mass.	epd-norway-npcr-026-2024
boundary_exclude_downstream	downstream stages	Exclude distribution after the factory gate, installation, use, maintenance, repair, replacement and end-of-life from this dataset; disclose any downstream scenario separately.	epd-norway-npcr-026-2024
boundary_no_capital_goods	manufacturing infrastructure	Exclude capital equipment and buildings unless the study goal explicitly requires them and the departure is disclosed.

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased raw materials, finished components, packaging, electricity, fuel and process water received at the manufacturing-site gate, with supplier and supplied-state records
starting_condition_role	Foreground manufacturing gate; upstream production remains in linked background datasets
product_classification_scope	Complete products within the reviewed CPC 48180 semantic boundary, independent of the external code as canonical identity
recursive_input_rule	If a complete item in the same product category enters refurbishment or remanufacture, record it once as a supplied product input at the declared starting condition and do not recursively expand its prior manufacturing in this foreground dataset
upstream_dataset_requirement	Link geography-, technology- and supplied-state-representative upstream datasets for every purchased material, component, energy carrier, water and packaging input
disclosure	Declare new or remanufactured route, product configuration, included mechanisms/electronics, net mass, surface-treatment route, packaging, site geography, reporting period, allocation and all excluded stages

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
material_fabrication	Material and component preparation and fabrication	required	Always; record only atomic materials and components present in the declared bill of materials	Foreground frame, panel, upholstery and mechanism preparation	One conforming item leaving fabrication
surface_treatment	Surface preparation and coating	conditional	Include when degreasing, rinsing, coating or thermal curing occurs within the reporting-site boundary	Foreground finishing	One conforming set of treated parts
assembly_testing_packaging	Final assembly, factory testing and packaging	required	Always; conditional packaging rows apply only when the named component is used	Foreground completion and reference-product output	One quality-released packaged item

Process: Material and component preparation and fabrication (material_fabrication)

Inputs

Product flows

Hot-rolled strip steel (hot_rolled_strip_steel)

Record purchased hot-rolled non-alloy strip steel that is cut, formed or welded into the product.

• Selected flow: Hot rolled strip steel 984781e6-5296-48d7-a630-553209cd51c5
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass minus documented unused return for one conforming item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Stainless-steel sheet (stainless_steel_sheet)

Record stainless-steel sheet only when it is present in the declared product bill of materials; the TianGong UUID remains unresolved.

• Selected flow: Stainless-steel sheet
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass minus documented unused return for one conforming item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Aluminium extrusion profile (aluminium_extrusion_profile)

Record purchased aluminium extrusion profile only when used in the frame or support structure.

• Selected flow: Aluminium extrusion profile 4f197be3-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass minus documented unused return for one conforming item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Flexible polyurethane foam (flexible_polyurethane_foam)

Record flexible polyurethane cushioning foam only for upholstered configurations; the TianGong UUID remains unresolved.

• Selected flow: Flexible polyurethane foam
• Flow property / unit: Mass / kg
• Amount rule: measured foam mass incorporated in one conforming item, including attributable cutting loss before waste segregation
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released upholstered item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

PVC-coated polyester fabric (pvc_coated_polyester_fabric)

Record supplied PVC-coated polyester upholstery fabric only when used; the TianGong UUID remains unresolved.

• Selected flow: PVC-coated polyester fabric
• Flow property / unit: Mass / kg
• Amount rule: measured supplied fabric mass incorporated in one conforming item plus attributable cutting loss
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released upholstered item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Electric linear actuator (electric_linear_actuator)

Record a complete purchased electric linear actuator only for electrically adjusted configurations; the TianGong UUID remains unresolved.

• Selected flow: Electric linear actuator
• Flow property / unit: Mass / kg
• Amount rule: measured or supplier-documented mass of actuators installed in one conforming item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released electrically adjusted item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Hydraulic cylinder (hydraulic_cylinder)

Record a complete purchased hydraulic cylinder only for hydraulically adjusted configurations; the TianGong UUID remains unresolved.

• Selected flow: Hydraulic cylinder
• Flow property / unit: Mass / kg
• Amount rule: measured or supplier-documented mass of cylinders installed in one conforming item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released hydraulically adjusted item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_bom_components
• Sources:

Steel screws (steel_screws)

Record purchased steel screws incorporated during fabrication or subassembly.

• Selected flow: Steel screw 895204f6-6425-4814-afc5-cb97e530e892
• Flow property / unit: Mass / kg
• Amount rule: count installed screws and convert to batch-specific measured or supplier-documented mass
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_bom_components
• Sources:

Fabrication electricity (fabrication_electricity)

Record purchased electricity used by onsite cutting, forming, machining, welding and fabrication support equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: submetered electricity or reporting-period meter allocation to conforming fabrication output
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_electricity
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Scrap steel (scrap_steel)

Record segregated ferrous steel scrap generated by fabrication and transferred to its declared treatment destination.

• Selected flow: Scrap steel c3fc5605-baa3-4b25-9934-ecf7fcbc72da
• Flow property / unit: Mass / kg
• Amount rule: weighed scrap generated net of documented internal reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_fabrication_scrap
• Sources:

Aluminium scrap (aluminium_scrap)

Record segregated aluminium scrap only when aluminium fabrication occurs and transfer the actual mass to its declared destination.

• Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45
• Flow property / unit: Mass / kg
• Amount rule: weighed scrap generated net of documented internal reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one quality-released item containing fabricated aluminium
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_fabrication_scrap
• Sources:

Elementary flows

Process: Surface preparation and coating (surface_treatment)

Inputs

Product flows

Thermoset powder coating (thermoset_powder_coating)

Record one formulated thermoset powder-coating product only when onsite powder coating occurs; the TianGong UUID remains unresolved.

• Selected flow: Thermoset powder coating
• Flow property / unit: Mass / kg
• Amount rule: issued coating mass minus recovered coating returned to the same process
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per one conforming set of coated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_materials
• Sources: epd-norway-npcr-026-2024

Sodium hydroxide (surface_sodium_hydroxide)

Record sodium hydroxide only when used in an onsite alkaline cleaning or surface-preparation bath.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass / kg
• Amount rule: active sodium-hydroxide mass added, calculated from solution mass and measured concentration
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_surface_materials
• Sources:

Process water (surface_process_water)

Record process water supplied to onsite cleaning and rinse stages.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: metered water mass or volume converted with documented density and allocated to treated parts
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_utilities
• Sources:

Natural gas for curing (surface_natural_gas)

Record gaseous natural gas only when combusted onsite for coating-oven heat.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume / m3
• Amount rule: metered and reference-condition-corrected gas volume allocated to conforming coated parts
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_utilities
• Sources:

Surface-treatment electricity (surface_treatment_electricity)

Record purchased electricity used by cleaning, pumping, ventilation, coating application and curing equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: submetered electricity or reporting-period meter allocation to conforming treated parts
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_utilities
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Metal-finishing wastewater (metal_finishing_wastewater)

Record aqueous wastewater leaving onsite metal cleaning and rinsing before treatment or offsite transfer; the TianGong UUID remains unresolved.

• Selected flow: Metal-finishing wastewater
• Flow property / unit: Mass / kg
• Amount rule: measured discharge mass or volume converted with documented density and allocated to treated parts
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_wastes
• Sources:

Powder-coating waste (powder_coating_waste)

Record spent powder coating and booth/filter residue that leaves the process as a separately managed waste.

• Selected flow: Powder coating waste 9aa53a82-5462-400e-9096-efab7718201f
• Flow property / unit: Mass / kg
• Amount rule: weighed waste transferred to the declared treatment destination
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one conforming set of coated parts for one finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_wastes
• Sources:

Elementary flows

Fossil carbon dioxide from curing (surface_fossil_carbon_dioxide)

Record only direct fossil carbon dioxide emitted by onsite natural-gas combustion; exclude upstream and purchased-electricity emissions from this elementary-flow row.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: measured stack mass or calculated site fuel-carbon balance allocated to conforming coated parts
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one conforming set of treated parts for one finished item
• Basis kind: Fuel inventory (fuel_inventory)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_surface_direct_emissions
• Sources:

Process: Final assembly, factory testing and packaging (assembly_testing_packaging)

Inputs

Product flows

Corrugated board boxes (corrugated_board_boxes)

Record corrugated-board boxes used to dispatch one finished item.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: measured mass of boxes consumed for one dispatched item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one packaged finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_components
• Sources:

PE-LD film (pe_ld_film)

Record low-density polyethylene film used to wrap or protect one finished item.

• Selected flow: Low-density polyethylene foil (PE-LD) 2cecd3a7-d90e-44b4-aec5-1d9dfb907477
• Flow property / unit: Mass / kg
• Amount rule: measured mass of PE-LD film consumed for one dispatched item
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one packaged finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_components
• Sources:

Wooden pallet (wooden_pallet)

Record a wooden pallet only when it is dispatched with the product; declare pallet reuse and allocation.

• Selected flow: Pallets, box pallets and other load boards, of wood, pallet collars of wood 4b49871e-95be-4e0c-9223-9902f9eaa763
• Flow property / unit: Mass / kg
• Amount rule: measured pallet mass multiplied by the documented share assigned to one dispatched item
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per one packaged finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_components
• Sources:

Assembly, testing and packaging electricity (assembly_packaging_electricity)

Record purchased electricity used by final assembly tools, adjustment/function tests and packaging equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: submetered electricity or reporting-period meter allocation to quality-released items
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_electricity
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Quality-released medical or qualifying multi-motion furniture (reference_product)

Record the complete product only after it passes declared factory quality and adjustment-function tests.

• Selected flow: Medical, surgical, dental or veterinary furniture, barbers' chairs and similar chairs, having rotating as well as both reclining and elevating movements e39dcb5d-76b1-4daa-b234-4016b382ad57
• Flow property / unit: Mass / kg
• Amount rule: measured net mass of one quality-released finished item, excluding transport packaging
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: one quality-released finished item
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_reference_product_release
• Sources: un-cpc-3-0-structure-2025

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	rule	source_ids
allocation_subdivide_first	multi-product manufacturing	Subdivide and meter product lines, surface-treatment batches and test cells wherever technically feasible before applying allocation.
allocation_shared_utilities	shared electricity, fuel and water	Use process submeters first; otherwise allocate with a documented physical driver such as machine time, treated area, bath throughput or product mass that causally represents resource use.
allocation_scrap	steel, aluminium and coating wastes	Record the measured outgoing waste at the foreground boundary and its actual destination; do not claim avoided virgin-production credits inside this cradle-to-gate inventory.
allocation_rework	rework and rejects	Assign rework and reject burdens to the reporting-period conforming output that caused them; disclose unusual campaigns and do not omit failed factory tests.
allocation_pallet_reuse	reusable wooden pallets	Allocate pallet mass by the documented number of dispatch uses or another auditable physical reuse record; a single-use assumption must be explicit.

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_bom_components	material_fabrication	each named purchased material or component	approved bill of materials, issue/return record, supplier specification, check weight	model; lot; item code; count; issued mass; returned mass; installed mass; supplier mass	reconcile production orders to stock issue/return and verify count-to-mass conversions by weighing	kg and count	each production order; monthly reconciliation	representative reporting year or declared campaign	all manufacturing sites in dataset	sum net issued mass for conforming items and normalize by quality-released count	approved BOM revision, calibrated-scale record, supplier certificate, stock reconciliation
cp_process_electricity	material_fabrication; assembly_testing_packaging	purchased electricity	submeter, utility meter and production log	meter start/end; multiplier; process; operating time; conforming count	read dedicated submeters or allocate facility meter with documented physical driver	MJ	monthly and at campaign boundaries	same period as production output	reporting-site boundary	subtract documented non-production loads, allocate by process and normalize by conforming item	meter calibration/status, invoice reconciliation, allocation worksheet
cp_fabrication_scrap	material_fabrication	each named metal scrap	scale ticket, scrap-bin log, transfer note	material identity; gross; tare; net mass; internal reuse; destination	weigh segregated scrap and reconcile to material mass balance	kg	each transfer; monthly reconciliation	same period as material consumption	reporting-site fabrication area	sum net external transfer by material and normalize by conforming item	calibrated scale, transfer documentation, mass-balance check
cp_surface_materials	surface_treatment	each named coating or bath chemical	purchase, issue, concentration and recovery record	product identity; solution mass; active concentration; issued mass; recovered mass; batch	reconcile chemical/coating issue and recovery; calculate active mass where applicable	kg	each bath make-up or coating batch	same period as treated output	onsite surface-treatment boundary	sum net consumed mass and allocate to conforming treated parts	SDS/product specification, concentration test, stock reconciliation
cp_surface_utilities	surface_treatment	process water, natural gas and electricity	water/gas/electricity meter and treatment log	meter start/end; correction factor; reference conditions; treated batch; conforming output	use dedicated meters or documented causal allocation	kg, m3 and MJ	per batch where metered; monthly minimum	same period as surface-treated output	onsite surface-treatment boundary	correct units/reference conditions, allocate to conforming treated parts and normalize per item	meter calibration/status, invoices, batch records
cp_surface_wastes	surface_treatment	each named wastewater or coating waste	discharge meter, tank/scale ticket, manifest	waste identity; quantity; density; treatment; destination; date	meter or weigh each segregated waste and reconcile with inputs	kg	each discharge/transfer; monthly reconciliation	same period as surface-treatment inputs	onsite generation to first waste receiver	sum actual outgoing mass by waste identity and normalize per item	discharge record, density measurement, waste manifest, mass-balance check
cp_surface_direct_emissions	surface_treatment	direct fossil carbon dioxide	stack measurement or site fuel-carbon balance	stack flow; concentration; time; gas volume; fuel carbon content; oxidation basis; allocation driver	measure stack mass or calculate from metered fuel and documented carbon balance	kg	per test campaign or reporting period	same period as curing fuel	direct onsite emission boundary	calculate direct fossil CO2 only and allocate to conforming treated parts	instrument calibration, laboratory fuel data, calculation worksheet
cp_packaging_components	assembly_testing_packaging	each named packaging component	packaging BOM, issue record, check weight, reuse log	component identity; count; unit mass; consumed mass; reuse cycles; product count	weigh packaging or multiply issued counts by verified unit mass	kg and count	each packaging configuration; monthly reconciliation	same period as dispatched output	reporting-site packaging boundary	calculate mass assigned to one dispatched item by component and documented reuse	approved packaging BOM, scale record, pallet reuse log
cp_reference_product_release	assembly_testing_packaging	reference product	final quality-release, function-test and scale record	serial/model; configuration; net mass; test result; disposition; date	weigh each model sample or every item as required and count only conforming released output	kg and count	each item or statistically justified batch	full reporting period	all sites and models in dataset	sum released net mass and count; report mass per item and variability	calibrated scale, signed test record, nonconformance log

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_net_material_input	named BOM materials	net material input = issued mass − documented unused return; separately report waste rather than subtracting external scrap from the purchased-input exchange	issued mass; return mass; conforming count	kg per item
calc_count_to_mass	screws and packaging	component mass = installed or issued count × batch-specific verified unit mass; reconcile with check weight	count; verified unit mass; check weight	kg per item
calc_active_sodium_hydroxide	sodium hydroxide	active NaOH mass = solution mass × measured mass fraction; retain concentration and solution-state records	solution mass; measured concentration	kg active NaOH per item
calc_process_allocation	shared utility meters	process exchange per item = corrected reporting-period process quantity × causal allocation share ÷ conforming item count	corrected meter quantity; allocation driver; conforming count	row unit per item
calc_surface_fossil_co2	direct curing emission	use measured stack mass, or calculate fossil CO2 from metered gas and documented fuel-carbon balance; exclude upstream supply and electricity emissions	stack data or corrected gas volume; fuel carbon content; oxidation basis; allocation driver	kg fossil CO2 per item
calc_mass_balance	fabrication and surface treatment	reconcile named material inputs with product incorporation, internal return, named waste and documented stock change; investigate unexplained differences	input, return, product, waste and stock-change masses	mass-balance closure and exception record

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	reference product	Preserve model, intended use, adjustment mechanism, included electronics/equipment, upholstery/finish, performance class, net mass and market state for every represented configuration.	approved specification, BOM, drawings, quality-release record
dq_temporal_match	all foreground exchanges	Use input, waste, emission and conforming-output records from the same representative year or declared campaign; explain substitutions and shutdown/start-up effects.	dated meters, invoices, production logs, manifests
dq_site_coverage	multi-site datasets	Include every site performing an in-scope manufacturing step or declare exclusions and their quantitative significance.	site list, process map, consolidated ledger
dq_meter_and_scale	measured quantities	Record calibration or verification status, resolution, missing-data treatment and unit/reference-condition conversions.	calibration certificate, verification log, calculation workbook
dq_bom_completeness	materials and packaging	Reconcile the approved material and packaging BOM to the inventory; surface treatments and electrical/electronic components must be explicitly disclosed.	signed BOM reconciliation and exception list
dq_waste_destination	each waste flow	Preserve waste identity, hazardous status where applicable, first receiver, treatment route and whether material is internally reused.	waste manifest, receiver record, internal reuse log

9. Validation Rules

rule_id	Applies to	rule	source_ids
validate_reference_flow	reference product	Confirm that the output is exactly one quality-released complete item, its measured net mass uses the reference UUID and packaging is excluded from that net mass.	un-cpc-3-0-structure-2025
validate_scope_identity	product category	Confirm the declared item has a special medical, surgical, dental or veterinary furniture function, or that a barber/similar chair has rotating, reclining and elevating movements.	un-cpc-3-0-structure-2025
validate_atomic_inventory	all inventory rows	Reject collection labels and combined exchanges; each row must retain one concrete flow, one direction, one flow type, one property and one unit.
validate_conditional_routes	route-specific rows	A conditional material, component, surface-treatment, fuel, waste or packaging row must be present only when its named route occurs and must not be silently replaced with a different flow.
validate_mass_balance	fabrication and finishing	Reconcile input, return, product incorporation, named waste and stock change; investigate and disclose unexplained differences before dataset release.
validate_direct_emissions	fossil carbon dioxide	Confirm that the row contains only direct onsite fossil CO2 and excludes upstream natural-gas and purchased-electricity emissions.
validate_source_and_uuid_gaps	unresolved inventory	Preserve UUID-empty rows and range-evidence needs as review metadata; do not substitute proxy UUIDs or unsupported numeric ranges.

10. Published Dataset Profile

Field	Value
dataset_role	Product- and site-specific cradle-to-factory-gate foreground dataset suitable for controlled publication as a secondary_dataset or background_dataset after review
downstream_use	Supply-chain LCA of medical, surgical, dental or veterinary furniture and qualifying multi-motion chairs; product manufacturing comparison only after reference flow, configuration, boundary and data quality are aligned
allowed_use	Use for the declared model/configuration, manufacturing geography, technology, reporting period and new/remanufactured state; aggregate variants only with disclosed production-weighted records
excluded_use	Do not represent distribution, installation, service life, clinical use, maintenance, repair, replacement or end-of-life; do not apply to ordinary furniture, standalone equipment or parts sold separately
required_metadata	canonical PCR id; product subtype/intended use; model/configuration; mechanism and electronics; upholstery/finish; performance class; net mass; packaging; site/geography; reporting period; market state; allocation; data sources; unresolved identities and range needs
required_quality_disclosure	foreground coverage, meter/scale status, BOM reconciliation, temporal and site representativeness, allocation drivers, mass-balance exceptions, waste destinations and any proxy or missing data
update_trigger	change in product configuration or mechanism, material/finish/packaging BOM, manufacturing site or route, energy supply, allocation method, waste treatment, reporting period representativeness, reference UUID or resolved inventory UUID

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	CPC 48180 classification identity and English title
un-cpc-1-1-zh-2002	official_guidance	United Nations, Central Product Classification Version 1.1, Chinese edition, ST/ESA/STAT/SER.M/77/Ver.1.1, https://unstats.un.org/unsd/publication/SeriesM/M_77ver1_1c.pdf	Verified professional Chinese terminology for the stable 48180 category
epd-norway-npcr-026-2024	official_guidance	The Norwegian EPD Foundation, NPCR 026 Part B for Furniture and components of furniture, version 3.0, issued 8 October 2024, https://www.epd-norge.no/getfile.php/13161869-1741627951/PCRer/NPCR%20026%20%20Furniture_update_2024_v3.0_final-2.pdf	Complete-furniture and component scope, one-piece reference, electrically operated furniture, product-stage surface treatments, material disclosure and downstream-stage separation
eu-ecolabel-furniture-2016	standard	Commission Decision (EU) 2016/1332 of 28 July 2016 establishing ecological criteria for the award of the EU Ecolabel for furniture, https://eur-lex.europa.eu/eli/dec/2016/1332/oj/eng	Furniture definition and atomic component/material terminology including frames, fasteners, textiles, coated fabrics and polyurethane foam