Knives (except for machines) and scissors, and blades therefor

1. Scope and Applicability

This PCR governs foreground data packages for the factory-gate production of knives other than machine knives, scissors, and finished or replacement blades made for those products. It covers complete products and blades sold separately, including stamping or cutting, route-specific forging, heat treatment, grinding, sharpening, polishing, cleaning, route-specific handle or pivot assembly, inspection, and packaging that crosses the factory gate.

Machine knives and cutting blades, saw blades, razors and razor blades, spoons, forks and similar flatware, manicure or pedicure instruments, upstream steelmaking, distribution, use, maintenance, and end-of-life are outside the default boundary. A data package shall identify whether it represents a knife, scissors, or blade-only product and shall not aggregate materially different products unless their mass and foreground burdens remain separately traceable.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.fabricated-metal-products-except-machinery-and-equipment.knives-except-for-machines-and-scissors-and-blades-therefor
classification_refs	CPC 3.0: 42913
covered_products	Non-machine knives; scissors; finished knife blades; finished scissors blades; replacement blades made for these products
excluded_products	Machine knives and machine cutting blades; saw blades; razors and razor blades; table flatware classified separately; manicure or pedicure instruments; manufacturing services on customer-owned inputs
representative_product	A saleable finished knife, pair of scissors, or blade-only product that meets the declared dimensional, material, hardness, sharpness, finish, and assembly specification
production_route	Blade-grade steel receipt; blanking, cutting, or conditional forging; heat treatment; grinding, sharpening, polishing, and cleaning; conditional handle or pivot assembly; inspection; conditional packaging; factory-gate release
market_state	Finished, inspected product or replacement blade at the factory gate, with included packaging declared

3. Reference Flow

Field	Value
What	A finished non-machine knife, pair of scissors, or corresponding blade that provides the declared cutting function
How much	1 kg of saleable product at the factory gate
How well	Conforming to the declared product type, alloy, hardness or heat-treatment state, dimensions, edge geometry, sharpness test, surface finish, assembly configuration, and defect acceptance criteria
How long or cycle	One factory-gate product delivery; service life is reported as a qualifier when the dataset is used for functional comparisons
reference_flow_link	reference_product_output

Field	Value
Reference amount	1 kg
Reference product flow	Knives (except for machines) and scissors, and blades therefor b0a74999-fb7f-40ee-9dbe-41016e49a00e
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 form: knife, scissors, or blade-only; product mass and item count; blade alloy and grade; heat-treatment state and declared hardness method/result; dimensions and edge geometry; sharpness or cutting-performance test; surface finish or coating; handle and pivot materials when present; packaging included; manufacturing geography; technology and reporting period

When constructing a foreground data package, the items listed in Required qualifiers shall be declared in dataset metadata, process notes, reference-flow comment, product description, or an equivalent data-package field. Missing required qualifiers make the reference-flow definition incomplete for that data package.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	Reference product and mass-based inventory rows	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use net saleable product mass at factory gate. Measure packaging separately and do not include packaging mass in the 1 kg reference product.
item_mass_conversion	Production records available only as item counts	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert counts using a product-specific mean mass from a documented representative sample; retain count, sample size, measured masses, and sampling period.
electricity_energy_conversion	Electricity rows	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve the metered kWh record and convert to MJ using 1 kWh = 3.6 MJ; do not mix purchased electricity with fuel energy.
gas_volume_conditions	Natural-gas and industrial-oxygen rows	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	Report the metered volume and the reference temperature and pressure; convert supplier-normalized volumes only with the documented supplier or meter convention.
solution_active_mass	Sodium-hydroxide solution	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Report delivered solution mass and concentration separately; the selected flow amount is dry sodium-hydroxide mass calculated from those foreground records.

5. System Boundary

rule_id	Applies to	Rule	source_ids
boundary_foreground_operations	Foreground manufacturing	Include directly controlled material receipt, blank forming, conditional forging or thermal cutting, heat treatment, grinding, sharpening, polishing, cleaning, conditional assembly, inspection, and included packaging through factory-gate release.	eu-jrc-sf-bref; us-epa-metal-finishing-1992
boundary_upstream_inputs	Purchased products and energy	Keep each purchased product or energy carrier as an explicit input and link it to an upstream dataset matching material grade or composition, product state, geography, technology, and delivery boundary.
boundary_waste_and_emissions	Foreground releases	Record steel scrap, captured grinding dust, spent abrasive, rinse wastewater, and direct combustion emissions as separate exchanges when generated; do not hide them in a yield factor or treatment service.	us-epa-metal-finishing-1992
boundary_default_exclusions	Outside default system	Exclude capital goods, employee travel, distribution after the factory gate, use, maintenance, and end-of-life unless the study goal explicitly extends the system and reports those additions separately.

Boundary Abstraction

Field	Value
declared_starting_condition	Blade-grade steel sheet, strip, or documented semifinished blank and all purchased components are received at the reporting facility; supplier state, alloy, dimensions, and included upstream datasets are declared.
starting_condition_role	Factory-gate foreground entry point for blade forming and finishing
product_classification_scope	CPC 3.0 subclass 42913 as mapping context; canonical scope is limited by the covered and excluded product descriptions above
recursive_input_rule	A purchased unfinished or finished product within this same canonical category remains an explicit product input; do not recursively apply this PCR to manufacture it inside the same foreground package.
upstream_dataset_requirement	Every purchased material, component, energy carrier, and packaging flow requires a compatible upstream dataset or a disclosed data gap; proxy substitutions require justification and sensitivity review.
disclosure	Declare product form, blade material, received stock state, blank-forming route, heat source, finishing route, wet or dry cleaning, assembly configuration, packaging inclusion, geography, technology, reporting period, and all foreground exclusions.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
stock_preparation_and_blanking	Stock preparation and blank forming	required	Always; select only the blade-material and cutting exchanges actually used	Foreground blade-stock receipt, cutting, stamping, or blank preparation	kg accepted blank leaving the process
heat_treatment	Heat treatment	required	Always; record the actual gas-fired, electric, or combined route	Foreground hardening, tempering, and route-specific thermal treatment	kg heat-treated blank
grinding_polishing_and_cleaning	Grinding, sharpening, polishing, and cleaning	required	Always; water and alkali rows apply only to wet or aqueous routes	Foreground edge formation, surface finishing, and cleaning	kg finished blade component
handle_and_pivot_assembly	Handle and pivot assembly	conditional	Include for complete products with molded polypropylene handles or other assembled components; exclude for blade-only products	Foreground component manufacture and assembly	kg assembled product
packaging	Packaging	conditional	Include only packaging supplied with the factory-gate product	Foreground packing	kg packed product, with product and packaging masses separate
final_inspection_and_release	Final inspection and factory-gate release	required	Always	Foreground acceptance and quantitative reference	kg accepted saleable product

Process: Stock preparation and blank forming (stock_preparation_and_blanking)

Inputs

Product flows

Stainless blade-stock sheet (blade_stainless_steel_sheet)

Record one declared stainless-steel grade only when stainless sheet or strip is the blade stock. The UUID remains unresolved because no exact state-100 stainless-steel sheet candidate passed the identity audit.

• Selected flow: Stainless steel sheet
• Flow property / unit: Mass / kg
• Amount rule: Weighed received stainless blade stock consumed by accepted and rejected blanks, net of documented returned stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_stock_and_blanking_records
• Sources:

Carbon-steel blade-stock sheet (blade_carbon_steel_sheet)

Record one declared carbon-steel grade only when carbon-steel sheet or strip is the blade stock. Do not combine this row with stainless stock.

• Selected flow: Carbon steel sheet
• Flow property / unit: Mass / kg
• Amount rule: Weighed received carbon-steel blade stock consumed by accepted and rejected blanks, net of documented returned stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_stock_and_blanking_records
• Sources:

Blanking electricity (blanking_electricity)

Record electricity metered or defensibly allocated to stock preparation, stamping, cutting, trimming, and route-specific forging equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: Metered electricity for the process, converted from kWh to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg accepted blank leaving the process
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_stock_and_blanking_records
• Sources:

Laser-cutting oxygen (blanking_oxygen)

Record oxygen only when it crosses the boundary as purchased industrial oxygen for laser or thermal cutting; exclude compressed air and oxygen not consumed by the declared route.

• Selected flow: Industrial oxygen bd4b0f96-2090-4806-a648-335ab20ff401
• Flow property / unit: Volume / m3
• Amount rule: Metered or supplier-recorded industrial oxygen used for accepted and rejected blanks
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg accepted blank leaving the process
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_stock_and_blanking_records
• Sources:

Outputs

Waste flows

Post-industrial steel cutting scrap (post_industrial_steel_scrap)

Record segregated steel skeletons, trim, offcuts, and rejected blanks that leave foreground control as scrap; declare alloy grade and destination.

• Selected flow: Post-industrial steel scrap c143745d-be4f-4d8f-b403-2dcbfe685349
• Flow property / unit: Mass / kg
• Amount rule: Weighed steel scrap leaving the process, net of documented internal remelting or direct reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted blank leaving the process
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_stock_and_blanking_records
• Sources:

Process: Heat treatment (heat_treatment)

Inputs

Product flows

Natural gas for heat treatment (heat_treatment_natural_gas)

Record natural gas only for a gas-fired furnace or directly fired auxiliary equipment within the foreground heat-treatment process.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume / m3
• Amount rule: Metered gas volume at documented reference conditions
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg heat-treated blank
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_treatment_records
• Sources: eu-jrc-sf-bref

Electricity for heat treatment (heat_treatment_electricity)

Record electricity for electric furnaces, controls, circulation, and directly attributable heat-treatment auxiliaries. This row may coexist with gas when both are consumed.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: Metered electricity converted from kWh to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg heat-treated blank
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_treatment_records
• Sources: eu-jrc-sf-bref

Outputs

Elementary flows

Direct fossil carbon dioxide from heat treatment (heat_treatment_fossil_co2)

Record only direct fossil CO2 from foreground natural-gas combustion. Do not copy upstream electricity emissions into this row.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Directly measured emission or calculated from collected fuel quantity, supplier composition or site carbon content, and documented oxidation
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg heat-treated blank
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_heat_treatment_records
• Sources:

Process: Grinding, sharpening, polishing, and cleaning (grinding_polishing_and_cleaning)

Inputs

Product flows

White fused alumina abrasive (white_fused_alumina)

Record purchased white fused alumina consumed as grinding or polishing abrasive; declare grit, bond or carrier, and whether recovered media re-enters the process.

• Selected flow: White Fused Alumina 429f2b7f-592a-434c-92e2-43a6b4859300
• Flow property / unit: Mass / kg
• Amount rule: Purchased abrasive issued to the process minus measured unused return
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Finishing electricity (finishing_electricity)

Record electricity for grinding, sharpening, polishing, dust collection, wet-process circulation, and directly attributable cleaning equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: Metered process electricity converted from kWh to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Wet-finishing process water (finishing_process_water)

Record water supplied for wet grinding, aqueous cleaning, and rinsing only when those operations occur; do not include once-through cooling water in this row.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: Metered water entering wet finishing, cleaning, and rinse stages, with reused internal water counted once at boundary entry
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Sodium hydroxide for aqueous cleaning (finishing_sodium_hydroxide)

Record dry sodium-hydroxide mass only when an alkaline cleaning bath containing sodium hydroxide is used.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass / kg
• Amount rule: Delivered solution mass multiplied by recorded sodium-hydroxide mass fraction, less documented unused return
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Outputs

Waste flows

Captured steel-bearing grinding dust (steel_grinding_dust)

Record captured dry dust containing steel removed during grinding and sharpening. Keep this separate from fugitive particulate emissions and spent abrasive.

• Selected flow: Steel-bearing grinding dust
• Flow property / unit: Mass / kg
• Amount rule: Weighed captured dust leaving foreground control, corrected only by a documented moisture measurement
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Spent aluminium-oxide abrasive (spent_aluminium_oxide_abrasive)

Record spent aluminium-oxide grinding or polishing media that leaves foreground control; do not combine it with captured steel dust.

• Selected flow: Spent aluminium-oxide abrasive
• Flow property / unit: Mass / kg
• Amount rule: Weighed spent aluminium-oxide abrasive leaving the process, net of measured internal reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Metal-finishing rinse wastewater (metal_finishing_rinse_wastewater)

Record wastewater discharged from wet grinding, cleaning, or rinsing as one aqueous waste flow, with flow quantity and composition retained in the foreground record.

• Selected flow: Metal-finishing rinse wastewater
• Flow property / unit: Mass / kg
• Amount rule: Metered discharge mass or volume converted using measured density; subtract only documented water internally reused before the boundary
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg finished blade component
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finishing_records
• Sources: us-epa-metal-finishing-1992

Process: Handle and pivot assembly (handle_and_pivot_assembly)

Inputs

Product flows

Polypropylene handle resin (polypropylene_handle_resin)

Record polypropylene granulate only when it is molded into a handle within the foreground. Purchased finished handles require their own concrete product row in the resulting data package and are not represented by this resin row.

• Selected flow: polypropylene granulate (PP) 4f19f11d-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: Weighed granulate issued to handle molding minus measured clean regrind returned internally
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg assembled product
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources:

Process: Packaging (packaging)

Inputs

Product flows

Corrugated board box (corrugated_board_box)

Record corrugated board boxes only when they accompany the product across the factory gate; dimensions, board grade, and recycled content remain required foreground qualifiers.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: Weighed boxes consumed for the declared reference-product shipments, net of unused return
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources:

Process: Final inspection and factory-gate release (final_inspection_and_release)

Outputs

Product flows

Accepted reference product (reference_product_output)

Record only accepted saleable product at factory gate. Rejected products remain in the process records and their material destinations are reported separately.

• Selected flow: Knives (except for machines) and scissors, and blades therefor b0a74999-fb7f-40ee-9dbe-41016e49a00e
• Flow property / unit: Mass / kg
• Amount rule: Net measured mass of accepted saleable products, excluding packaging
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg accepted saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_release_records
• Sources:

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision_first	Shared lines, furnaces, finishing equipment, and assembly	Subdivide by product, batch, and process and use directly metered or time-resolved records before applying allocation.
allocation_physical_fallback	Residual shared foreground burdens	If subdivision is not practicable, use a documented physical relationship that reflects causality, such as machine time, furnace occupancy, or accepted product mass; justify the choice and report a sensitivity case when an alternative could change conclusions.
allocation_scrap_no_hidden_credit	Post-industrial steel scrap and other wastes	Report waste mass and destination explicitly. Do not subtract a recycling credit or avoided burden inside the foreground inventory; any recycling allocation beyond the factory gate belongs to the declared downstream system model.
allocation_rework	Rework and rejected product	Assign rework energy and material losses to the product batch that caused them; do not count internally reworked material as both waste output and new external input.

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_stock_and_blanking_records	stock_preparation_and_blanking	Blade stock, electricity, oxygen, and steel scrap	Weigh tickets, stock issue/return records, meters, supplier invoices, and scrap dispatch records	alloy grade; stock form; opening stock; receipts; issues; returns; accepted blank mass; rejected blank mass; electricity kWh; oxygen m3 and reference conditions; scrap mass and destination	Reconcile stock ledger and calibrated meters to batch and accepted blank output	kg; kWh; m3	Per batch with monthly reconciliation	At least one representative reporting year or the declared production campaign	All foreground blank-forming equipment and attributable auxiliaries	Sum external inputs and outputs, remove internal returns, convert electricity to MJ, and normalize to accepted blank mass	Calibration records; stock reconciliation; supplier documents; scrap receipts; batch traceability
cp_heat_treatment_records	heat_treatment	Furnace energy and direct fossil CO2	Gas and electricity meters, furnace logs, batch records, and fuel composition records	batch mass; alloy; treatment schedule; furnace id; gas volume and reference conditions; electricity kWh; fuel carbon content or supplier composition; oxidation basis	Read dedicated meters or allocate shared meters by documented furnace occupancy and load	kg; m3; kWh; kg CO2	Per furnace batch with monthly meter reconciliation	At least one representative reporting year or the declared campaign	All foreground heat-treatment furnaces and directly attributable auxiliaries	Convert electricity to MJ; normalize fuel and energy to heat-treated mass; calculate CO2 only with documented collected factors	Meter calibration; furnace logs; supplier fuel specification; allocation worksheet
cp_finishing_records	grinding_polishing_and_cleaning	Abrasive, electricity, water, sodium hydroxide, dust, spent abrasive, and wastewater	Material issue records, electricity and water meters, bath make-up logs, waste weights, and discharge meters	abrasive issued and returned; electricity kWh; water input; sodium-hydroxide solution mass and concentration; dust mass and moisture; spent abrasive mass; wastewater volume, density, and composition	Reconcile material issues, meters, bath logs, and dispatched waste to finished blade mass	kg; kWh; m3	Per batch for materials and wastes; continuous or shift readings for meters; monthly reconciliation	At least one representative reporting year or the declared campaign	All foreground grinding, polishing, cleaning, rinse, and collection equipment	Count boundary entries once, subtract documented internal reuse, convert units, and normalize to finished blade mass	Meter calibration; bath analysis; waste manifests; laboratory results; mass-balance check
cp_assembly_records	handle_and_pivot_assembly	Polypropylene handle resin	Material issue/return records and production batch records	resin grade; additives; recycled content; issued mass; clean regrind return; reject mass; assembled product mass	Weigh resin issued and internal clean return by product batch	kg	Per batch with monthly stock reconciliation	At least one representative reporting year or the declared campaign	Foreground handle molding and assembly	Net external resin input normalized to accepted assembled product mass	Scale calibration; resin lot traceability; stock reconciliation
cp_packaging_records	packaging	Corrugated board box	Packaging purchase, stock issue, return, and shipment records	box specification; board grade; recycled content; opening stock; receipts; issues; unused returns; shipment product mass	Reconcile packaging stock to shipments of the declared product	kg	Per shipment with monthly reconciliation	At least one representative reporting year or the declared campaign	Packaging supplied across the factory gate	Net box mass normalized to unpackaged accepted product mass	Supplier specification; stock reconciliation; shipment records
cp_release_records	final_inspection_and_release	Accepted reference product	Calibrated scales, item counts, inspection logs, and release records	product form; product code; item count; net product mass; sample mean item mass if used; alloy; hardness result; edge test; dimensions; finish; packaging mass; accepted and rejected quantities	Weigh accepted product net of packaging and link results to inspection acceptance	kg; item	Per released batch	At least one representative reporting year or the declared campaign	All declared products released from the reporting facility	Sum accepted net product mass and normalize every inventory exchange to 1 kg	Scale calibration; inspection method; batch release approval; count-to-mass sampling record

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	All inventory rows	Normalized amount = net exchange amount divided by accepted net reference-product mass; multiply by 1 kg.	Net exchange amount; accepted net reference-product mass	Exchange amount per 1 kg reference product
calc_item_to_mass	Count-based product records	Product mass = accepted item count multiplied by the documented product-specific mean item mass.	Accepted item count; sampled item masses	kg accepted reference product
calc_electricity_mj	Electricity rows	Electricity in MJ = metered electricity in kWh multiplied by 3.6 MJ/kWh.	Metered kWh	MJ electricity
calc_sodium_hydroxide_dry_mass	Sodium-hydroxide row	Dry sodium-hydroxide mass = delivered solution mass multiplied by measured or supplier-declared sodium-hydroxide mass fraction.	Solution mass; sodium-hydroxide mass fraction	kg sodium hydroxide	us-epa-metal-finishing-1992
calc_direct_fossil_co2	Direct fossil carbon dioxide	Calculate only when direct measurement is unavailable: fossil CO2 = collected fuel quantity multiplied by documented site or supplier carbon content and oxidation term, with all unit conversions retained.	Natural-gas quantity; reference conditions; supplier composition or site carbon content; oxidation record	kg direct fossil CO2
calc_steel_mass_balance	Blade-stock transformation	On a consistent dry-metal basis, reconcile external steel input with accepted product metal, steel scrap, captured steel-bearing dust, rejected work in progress, and stock change; investigate rather than force-close unexplained differences.	Steel inputs; product metal mass; steel scrap; captured dust; rejected work in progress; stock change	Steel mass-balance residual	us-epa-metal-finishing-1992

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	Reference product	Preserve product form, product code, blade alloy, heat-treatment state, dimensions, edge geometry, finish, handle and pivot configuration, and packaging inclusion for every aggregated batch.	Product specification, bill of materials, batch traveller, and release record
dq_meter_and_scale_control	Measured mass, electricity, gas, oxygen, water, and wastewater	Use calibrated or verified devices; record calibration status, reading interval, allocation method for shared meters, and missing-data treatment.	Calibration certificate, meter log, and allocation worksheet
dq_temporal_representativeness	All foreground data	Cover at least one representative reporting year or a declared campaign that captures planned product and operating variability; disclose shutdowns, abnormal batches, and substitutions.	Production calendar, batch list, and representativeness assessment
dq_completeness	Material, energy, waste, and direct-emission inventory	Reconcile purchased inputs, internal returns, accepted output, rejects, and dispatched wastes; document every excluded exchange and its reason without using an unreported cut-off.	Stock reconciliation, steel mass balance, waste records, and exclusion register
dq_supplier_and_background_match	Upstream datasets	Match material grade or composition, product state, geography, technology, and delivery boundary; disclose proxy use and its influence.	Supplier specification, dataset metadata, and proxy sensitivity note
dq_wet_finishing_composition	Cleaning baths and wastewater	Retain bath concentration, water reuse, discharge quantity, density basis, and measured wastewater composition needed to select treatment and emission datasets.	Bath log, laboratory report, discharge meter, and waste manifest

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_identity	Reference flow	Confirm that the product is within the covered non-machine knife, scissors, or blade boundary and that all required qualifiers are present.	un-cpc-3-0-structure-2025; un-cpc-1-1-chinese-2002
validate_reference_mass	Quantitative reference	Confirm that accepted net product mass excluding packaging equals the declared reference amount and that count-to-mass conversion, if used, is product specific.
validate_route_applicability	Conditional rows and processes	Confirm that each conditional exchange is included only when the declared technology, material, wet process, assembly, or packaging route applies; absent rows require an explicit not-applicable statement in the produced data package.
validate_atomic_inventory	Process inventory	Confirm that every exchange is one physical, chemical, waste, or energy flow and that electricity, fuels, materials, wastes, wastewater, and emissions are not combined into umbrella rows.
validate_uuid_semantics	UUID-bearing flows	Confirm state-100 identity, flow type, classification, property, unit group, product state, geography, technology, and general comment before publication; unresolved UUID rows remain explicit review items.
validate_steel_balance	Steel transformation	Review the steel mass-balance residual against measurement uncertainty and investigate unexplained differences; do not force the balance by changing measured waste or output.	us-epa-metal-finishing-1992
validate_no_upstream_double_count	Electricity and direct emissions	Confirm that direct fossil CO2 includes only foreground combustion and that upstream electricity or fuel emissions remain in their supplying datasets.
validate_allocation_and_disclosure	Shared operations and wastes	Confirm subdivision was attempted first, residual allocation follows a justified physical relationship, waste destinations are explicit, and recycling credits are not hidden in foreground amounts.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground factory-gate production dataset for a declared knife, scissors, or corresponding blade product
downstream_use	secondary_dataset; background_dataset
allowed_use	Product carbon-footprint or LCA models that require factory-gate production of a product matching the declared form, alloy, performance, assembly, geography, technology, period, and packaging scope
excluded_use	Machine knives, saw blades, razors, flatware, unidentified mixed products, service-life comparisons without equivalent performance and lifetime evidence, or datasets that omit material grade and route
required_metadata	Canonical PCR id; product form and code; item count and net mass; alloy and grade; received stock state; forming route; heat source and treatment state; dimensions; hardness and test method; edge and sharpness test; surface finish or coating; handle and pivot materials; packaging scope; geography; technology; reporting period; allocation; exclusions; upstream dataset identities
required_quality_disclosure	Temporal and technological representativeness; meter and scale control; shared-meter allocation; product aggregation; steel mass-balance residual; wet-finishing composition; unresolved UUIDs; missing-data treatment; supplier/background match; waste destinations; proxy sensitivity
update_trigger	Change in product boundary, alloy family, forming or heat-treatment technology, finishing or cleaning route, handle system, packaging scope, geography, allocation, upstream dataset selection, or a foreground change material to reported results

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 2026-09-04)	Current product-classification identity and hierarchy
un-cpc-1-1-chinese-2002	official_guidance	United Nations Statistics Division, 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 (retrieved 2026-09-04)	Verified professional Chinese title terminology for the unchanged 42913 identity
eu-jrc-sf-bref	official_guidance	European Commission Joint Research Centre, Best Available Techniques Reference Document for the Smitheries and Foundries Industry, https://bureau-industrial-transformation.jrc.ec.europa.eu/reference/smitheries-and-foundries-industry (retrieved 2026-09-04)	Conditional forging, machining, finishing, and heat-treatment process decomposition
us-epa-metal-finishing-1992	official_guidance	U.S. Environmental Protection Agency, Guides to Pollution Prevention: The Metal Finishing Industry, EPA/625/R-92/011, October 1992, https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=30004KLA.TXT (retrieved 2026-09-04)	Grinding, polishing, chemical cleaning, rinse-water, spent-bath, abrasive-residue, and waste-stream separation rules