Artificial staple fibres, carded, combed or otherwise processed for spinning · 7. Allocation and Co-product Handling

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoid	All foreground operations	Avoid allocation by separately metering or subdividing routes, fibre families, products, and equipment wherever practicable.	eu-environmental-footprint-2021
allocation_internal_rework	Fibre returned within the same production system	Treat clean internal rework as an internal loop: record its mass for balance and quality control, but do not create a second input burden, output credit, or co-product.	eu-textiles-bat-2022
allocation_secondary_fibre	Saleable noil or other secondary fibre	First apply physical subdivision; if subdivision is not possible, use a documented causal physical relationship, and use economic allocation only when no defensible physical relationship exists. Record mass, quality, destination, price period, and sensitivity to the chosen method.	eu-environmental-footprint-2021
allocation_waste	Waste, recycling, recovery, and disposal	Do not allocate production burdens to waste merely because it is collected; model treatment and any recycling convention consistently with the goal and scope and disclose it.	eu-textiles-bat-2022; eu-environmental-footprint-2021

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_atomic_inventory_records	prepared_fibre_gate_to_gate	Every atomic fibre-family input, energy carrier, water input, supplier formulation, packaging material, product, secondary product, waste stream, wastewater stream, and elementary release	Lot, batch, bill-of-material, meter, invoice, service, waste-transfer, sales, and emission records	lot_id; fibre_name; supplier; composition; incoming_form; moisture_basis; route_steps; atomic_flow_name; flow_direction; flow_type; Tiangong_uuid_or_unresolved_status; quantity; unit; meter_or_scale_id; formulation_SKU; package_material; product_mass; secondary_product_mass; waste_stream; treatment_destination; exhaust_flow; particulate_concentration; operating_time; allocation_driver	Create one record line per atomic flow and active route; use calibrated mass and utility measurement where practicable, supplier SKU and SDS/TDS for each formulation, service records for each refrigerant, and monitoring or a transparent calculation for releases	kg; kWh; Nm3; operating hour; concentration and exhaust volume as applicable	Each lot or campaign; utilities at meter interval; service and emissions at applicable event or monitoring interval	At least 12 consecutive representative months or every lot when production is shorter	Every included line and shared service, with fibre family and route tags	Never pool distinct fibre families, carriers, chemicals, packaging materials, wastes, wastewater streams, or emissions; reconcile stock changes and internal rework once, then normalize each atomic row to 1 kg output	Calibration and meter records, invoices, fibre certificates, recipes, SDS/TDS, packaging specifications, service logs, waste receipts, sales records, emission reports, route sheet, and signed mass/energy reconciliation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_specific_input	Material, water, chemical, waste, and packaging records	specific amount = net amount assigned to declared route / net declared route output mass	assigned amount; route output mass	kg per kg process or factory-gate output	eu-environmental-footprint-2021
calc_specific_electricity	Electricity records	specific electricity = route-assigned kWh / net route output mass; subtract exported energy and unrelated site use	metered kWh; causal allocation driver; route output mass	kWh per kg output	eu-textiles-bat-2022; eu-environmental-footprint-2021
calc_material_balance	Every process and complete foreground route	closure = fibre input + applied water or retained formulation mass - prepared outputs - saleable secondary fibre - waste - net stock change; report absolute and percentage imbalance on a consistent moisture basis	fibre and formulation inputs; product and secondary outputs; waste; stock change; moisture data	reconciled mass balance and unexplained imbalance	eu-textiles-bat-2022
calc_particulate_release	Channelled particulate where monitored	released mass = concentration × dry or otherwise documented exhaust volume, with unit conversion and sampling-period extrapolation disclosed; do not subtract collected dust again	concentration; exhaust flow; operating time; abatement boundary	kg particulate released per kg route input or output	eu-textiles-bat-2022; hse-textile-dust-guidance
calc_route_result	Multi-family or multi-route sites	Calculate each fibre-family and route result separately; a combined result is allowed only as a documented production-mass-weighted aggregation of disclosed component results for a defined geography and period	component inventories; production masses; family and route identifiers	transparent production-weighted aggregate and component results	eu-environmental-footprint-2021

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	Product and input identity	Retain supplier and lot evidence for accepted fibre name, composition, incoming state, output state, and route; resolve discrepancies before aggregation.	Fibre certificate, bill of materials, lot label, test record, and route sheet
dq_route_specificity	All foreground records	Tag every record to fibre family, route, machine or line, site, lot or campaign, and reporting period; disclose any shared-service allocation.	Production logs, meter map, and allocation worksheet
dq_measurement	Mass, moisture, water, energy, chemicals, waste, and emissions	Use calibrated measurement where practicable and retain device, method, unit, frequency, and uncertainty or estimation basis.	Calibration certificates, meter logs, laboratory reports, and method records
dq_temporal	Dataset period	Cover at least 12 consecutive representative months, or all production in a shorter campaign, and disclose shutdowns, trials, abnormal operation, and missing periods.	Production calendar, downtime log, and completeness statement
dq_completeness	Input-output inventory	Include all known material, water, energy, product, secondary product, waste, wastewater, and air-emission crossings relevant to the declared operations.	Signed input-output inventory and mass/energy reconciliation
dq_estimate_replacement	Every reasoned_estimate range	Treat the range only as a candidate QA or initialization screen; replace it with reviewed source-backed or foreground evidence before active or published use, or retain an explicit reviewer acceptance and limitation disclosure.	Review decision and replacement source or approved limitation
dq_uuid_resolution	Non-reference inventory flows	Select Tiangong flow UUIDs through verified lookup during review; never infer a UUID from a similar label or copy the generic reference-product UUID to unrelated flows.	Lookup evidence retained outside PCR content and reviewer sign-off
dq_generic_flow_limit	Reference product flow	Preserve the exact generic product UUID and disclose that it does not distinguish fibre family, route, quality, moisture, finish, or delivery form.	Required qualifier fields in the completed data package

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_identity	Reference flow	Require product UUID 4f65996d-819a-4b51-8c1a-e3c3ecaa96b2, Mass UUID 93a60a56-a3c8-11da-a746-0800200b9a66, Units of mass UUID 93a60a57-a4c8-11da-a746-0800200c9a66, reference amount 1, and unit kg.
validate_required_qualifiers	Product metadata	Fail conformance when fibre family, composition, input and output state, route, moisture basis, finish condition, site, geography, production period, allocation, or packaging state is missing.	eu-textile-fibre-names-1007-2011
validate_artificial_not_synthetic	Category scope	Reject a dataset that uses only synthetic fibres or fails to establish a non-synthetic artificial fibre identity; blends shall report every component and remain within the declared product scope.	eu-textile-fibre-names-1007-2011; un-cpc-3-0-2025
validate_route_gate	Process map	Require receipt/opening/blending, packing/dispatch, and at least one qualifying preparation path: carding, combing after carding, or a specifically named other spinning-preparation operation.	hse-textile-machinery-standards
validate_no_unconditional_average	Aggregation	Reject an unqualified average across materially different fibre families or routes; any combined result shall expose component inventories, production weights, geography, and period.	eu-environmental-footprint-2021
validate_mass_basis	Mass balance	Require input and output moisture bases, consistent reporting periods, stock change, internal rework, secondary fibre, waste, and unexplained imbalance disclosure.	eu-textiles-bat-2022
validate_environmental_crossings	Emissions and waste	Require recorded or justified-not-applicable particulate, collected dust, fibre waste, packaging waste, water, wastewater, chemicals, and chemical waste for every active route.	eu-textiles-bat-2022; hse-textile-dust-guidance
validate_allocation	Multi-output operations	Require subdivision where practicable and a documented causal physical or, only when necessary, economic allocation method with mass, quality, destination, price period, and sensitivity for saleable secondary fibre.	eu-environmental-footprint-2021
validate_estimates	Provisional quantitative ranges	Flag every reasoned_estimate as provisional; active or published use requires replacement by reviewed evidence or explicit reviewer acceptance and disclosure.
validate_uuid_limit	Inventory identity	Fail if an unverified UUID is assigned to a non-reference flow or if the exact generic product UUID is treated as route-specific evidence.
validate_atomic_flows	Process inventory	Each inventory row shall represent one specific fibre, one energy carrier, one supplier formulation, one packaging material, one product, one waste stream, one wastewater stream, or one elementary flow; reject collection-type placeholder flows.	eu-textiles-bat-2022

10. Published Dataset Profile

Field	Value
dataset_role	Foreground unit-process or aggregated gate-to-gate dataset for one declared artificial staple-fibre family and preparation route
downstream_use	secondary_dataset; background_dataset after methodology review and completion of required foreground evidence
allowed_use	Cradle-to-gate or broader LCA models needing prepared artificial staple fibre when fibre family, route, product state, technology, geography, period, allocation, and data quality match
excluded_use	Synthetic fibres; fibre manufacture; yarn or fabric production; unqualified cross-family or cross-route averages; comparative claims using candidate reasoned estimates as if they were reviewed benchmarks
required_metadata	Canonical PCR id; exact generic product-flow UUID and required qualifiers; fibre certificate and composition; input/output form; process map; site and geography; period; measurement and moisture basis; active operations; utilities; wastes and emissions; allocation; packaging; upstream dataset links; estimate flags
required_quality_disclosure	Coverage and representativeness; measurement and allocation methods; route-level completeness; mass-balance closure; missing or estimated flows; unresolved inventory UUIDs; abatement boundary; all retained reasoned estimates and their review status
update_trigger	New reviewed route-specific benchmark; new or changed Tiangong flow identity; regulatory or fibre-name change; material technology or recipe change; route or equipment change; supplier/fibre-family shift; estimate replacement; allocation change; or material deviation from the declared period

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-2025	Official guidance (official_guidance)	United Nations Statistics Division, Central Product Classification (CPC) Version 3.0 Explanatory Notes, code 26220, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf (retrieved 2026-08-12)	Classification scope and distinction from synthetic staple fibres and yarn
eu-textile-fibre-names-1007-2011	Official guidance (official_guidance)	Regulation (EU) No 1007/2011, especially Article 5 and Annex I, https://eur-lex.europa.eu/eli/reg/2011/1007/oj (retrieved 2026-08-12)	Accepted fibre names and descriptions for acetate, alginate, cupro, modal, protein, triacetate, viscose, lyocell, and distinction from synthetic fibres
eu-textiles-bref-2023	Official guidance (official_guidance)	European Commission Joint Research Centre, Best Available Techniques Reference Document for the Textiles Industry, January 2023, https://bureau-industrial-transformation.jrc.ec.europa.eu/reference/textiles-industry (retrieved 2026-08-12)	Textile fibre-family context, fibre preparation scope, and boundary limitation that man-made fibre production is a distinct upstream activity
eu-textiles-bat-2022	Official guidance (official_guidance)	Commission Implementing Decision (EU) 2022/2508 establishing BAT conclusions for the textiles industry, https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32022D2508 (retrieved 2026-08-12)	Input-output inventory, materials, water, energy, wastewater, waste gas, waste, chemicals management, monitoring, and waste handling rules
hse-textile-dust-guidance	Official guidance (official_guidance)	UK Health and Safety Executive, Dust in the textiles industry, https://www.hse.gov.uk/textiles/dust.htm (retrieved 2026-08-12)	Dust relevance for opening, blending, carding, combing, extraction, filtration, cleaning, and released-versus-collected material distinction
hse-textile-machinery-standards	Official guidance (official_guidance)	UK Health and Safety Executive, British Standards and other documents applicable to textile machinery safety, section on BS EN ISO 11111-2, https://www.hse.gov.uk/textiles/british-standards.htm (retrieved 2026-08-12)	Process decomposition for opening, cleaning, blending, carding, converter/stretch-breaking, drawing, gilling, combing, roving, and related preparation equipment
eu-environmental-footprint-2021	Official guidance (official_guidance)	Commission Recommendation (EU) 2021/2279 on Environmental Footprint methods, https://eur-lex.europa.eu/eli/reco/2021/2279/oj (retrieved 2026-08-12)	Intermediate-product mass reference, company-specific foreground records, multi-route representativeness, subdivision and allocation hierarchy, and data-quality framing