Clams, cockles and ark shells, frozen, smoked, dried, salted or in brine

1. Scope and Applicability

This PCR covers food-grade clams, cockles and ark shells, whether in shell or not, placed on the market after exactly one declared primary preservation route: frozen, smoked, dried, salted, or brine. It also covers flour, meal and pellets made from these molluscs when fit for human consumption. The five route values are mutually exclusive applicability choices; a data package shall not stack their inventories. A product receiving more than one primary preservation treatment requires a reviewed extension rather than automatic combination under this PCR.

The PCR excludes live, fresh or chilled products; products otherwise prepared or preserved; inedible flour, meal or pellets; dead or unfit products; and downstream distribution, retail, preparation, consumption and end-of-life. The foreground gate is the qualified saleable product released from the processing facility after applicable packaging and controlled holding.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.food-products-beverages-and-tobacco-textiles-apparel-and-leather-products.meat-fish-fruits-vegetables-oils-and-fats.clams-cockles-and-ark-shells-frozen-smoked-dried-salted-or-in-brine
classification_refs	CPC 3.0: 21265 (exact scope reference)
covered_products	Food-grade clams, cockles and ark shells, in shell or shucked, frozen, smoked, dried, salted or in brine; edible flour, meal and pellets made from these molluscs
excluded_products	Live, fresh or chilled molluscs; otherwise prepared or preserved products; inedible flour, meal or pellets; dead or unfit molluscs
representative_product	Generic qualified saleable CPC 21265 product, with species or commercial group, presentation and primary preservation route declared
production_route	Exactly one of frozen, smoked, dried, salted, or brine; combined primary routes require separate review
market_state	Qualified saleable product at the processing-facility gate, after applicable immediate packaging and controlled holding

3. Reference Flow

Field	Value
What	Qualified saleable food product of clams, cockles or ark shells within the declared presentation and one primary preservation route
How much	1 kg product content on the declared saleable mass basis; immediate packaging is excluded
How well	Conforming to the producer's release specification and applicable food-safety controls, with route, presentation and mass-condition qualifiers reported
How long or cycle	One production and release cycle ending at the processing-facility gate; no use-duration service is represented
reference_flow_link	Output reference_product from packaging_holding_release

Field	Value
Reference amount	1 kg
Reference product flow	Clams, cockles and ark shells, frozen, smoked, dried, salted or in brine 7a159b9e-de7a-4ef0-906e-8f2e8615d6cd
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	species or commercial group; in-shell, shucked, or flour/meal/pellet presentation; exactly one primary route; cooked state where smoking includes cooking; reference mass basis; final moisture condition; salt or brine condition when applicable; glaze and deglazed mass when frozen and glazed; drained-mass or net-contents basis and packing-medium fraction when in brine; facility geography; production period; technology

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

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	Reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Set the quantitative reference to exactly 1 kg of qualified saleable product content at facility release; exclude immediate packaging mass.
presentation_mass_basis	In-shell, shucked and comminuted presentations	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	For an in-shell product, shell mass remains in the product content mass; for a shucked or flour/meal/pellet product, use only the marketed content. Report edible-part fraction separately when relevant and do not compare presentations without conversion.
frozen_glaze_basis	Frozen glazed product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Record gross frozen mass, glaze mass and deglazed product mass using the facility's documented control method. Use deglazed product mass as the reference basis unless the applicable market specification defines another basis, which shall be disclosed.
brine_mass_basis	Product in brine or other packing medium	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use drained mass when the marketed specification declares drained mass; otherwise use net contents and report product and packing-medium fractions. Do not mix drained-mass and net-contents datasets.
moisture_salt_condition	Dried, salted, smoked or brined product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Report final moisture and salt concentration on the declared test basis. Normalize on the as-sold basis unless a dry-matter conversion is explicitly required and the measured conversion is disclosed.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Live, raw or previously chilled/frozen bivalve input received at the processing facility with lot identity, origin, harvest or supplier status, incoming mass, shell presentation and temperature or condition recorded
starting_condition_role	Upstream product input to foreground receipt, preparation and preservation
product_classification_scope	The exact generic CPC 3.0 subclass 21265 semantic scope, independent of species and facility
recursive_input_rule	If a purchased input is itself a CPC 21265 preserved product, record it once as an upstream product flow with its own dataset and do not recreate its preservation inventory inside this foreground system; disclose its route and mass basis.
upstream_dataset_requirement	Link representative upstream datasets for cultivation or wild harvest, landing, prior handling, ingredients, energy carriers and packaging production through their delivered inputs; disclose proxies.
disclosure	Declare source area or supplier, traceability lot, incoming state, shell presentation, prior treatment, selected primary route, facility gate, geography, period, technology, packaging and controlled-holding conditions.

Boundary Rules

rule_id	Applies to	Rule	source_ids
boundary_foreground_gate	Foreground processing	Include receipt, sorting and cleaning, the one selected preservation route, immediate packaging, applicable in-facility controlled holding, utilities, process water, ingredients, rejects, wastewater, direct releases and treatment until product release.	eu-pef-2021-2279, codex-cxc-52-2003
boundary_route_exclusivity	Preservation route	Include exactly one of frozen, smoked, dried, salted, or brine; route-inapplicable inputs and operations shall be absent rather than zero-filled as if performed.	unsd-cpc-3-0-21265
boundary_upstream_downstream	Linked life-cycle stages	Model cultivation or wild harvest, landing and delivered upstream materials with linked datasets. Exclude post-gate distribution, retail, preparation, consumption and end-of-life from this foreground dataset, while preserving them for a downstream life-cycle model.	eu-pef-2021-2279
boundary_shellfish_control	Received bivalves and release	Retain lot traceability and evidence of applicable growing-area, harvest, purification or approved processing controls; maintain conditions that prevent contamination and uncontrolled microbial growth through release.	codex-cxc-52-2003

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
receiving_preparation	Receiving and preparation	required	All datasets	Foreground receipt, traceability, sorting, washing and presentation preparation	kg accepted prepared bivalve material
primary_preservation	Primary preservation	required	Execute exactly one declared route	Foreground freezing, smoking, drying, salting or brining	kg preserved product leaving the selected route
packaging_holding_release	Packaging, controlled holding and release	required	All datasets; route-specific holding controls apply only when required	Foreground immediate packaging, in-facility holding and product release	1 kg qualified saleable reference product

Process: Receiving and preparation (receiving_preparation)

Inputs

Product flows

Received bivalve material (received_bivalves)

Record all live, raw or previously chilled/frozen bivalve material crossing the facility gate, including shell and prior-treatment state.

• Selected flow: Received clams, cockles or ark shells
• Flow property / unit: Mass / kg
• Amount rule: measured lot input mass; the provisional range applies only as a same-route, same-presentation QA screen and is replaced when complete reporting-period lot mass balances are available
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg qualified saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_receiving_traceability_mass
• Sources: codex-cxc-52-2003
• Range: Provisional received-material screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 20
  • Unit: kg/kg qualified saleable product
  • Basis: same declared route and presentation only; replace with reporting-period mass balance before reviewed use
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Preparation water (preparation_water)

Record metered or otherwise reconciled water entering washing, de-sanding, shucking support and hygiene operations.

• Selected flow: Process water
• Flow property / unit: Mass / kg
• Amount rule: measured water use allocated to accepted preparation output; the provisional range is replaced when route-line submetering or reconciled batch records cover the reporting period
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted prepared bivalve material
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_waste_balance
• Sources: codex-cxc-52-2003
• Range: Provisional preparation-water screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg/kg accepted prepared material
  • Basis: applies only to water crossing this process boundary; replace with metered or reconciled foreground records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Accepted prepared bivalve material (prepared_bivalves)

Calculate accepted material from measured incoming, reject, removed-shell and transfer masses, preserving presentation identity.

• Selected flow: Prepared clams, cockles or ark shells
• Flow property / unit: Mass / kg
• Amount rule: measured accepted output reconciled by calc_preparation_mass_balance
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per preparation batch
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_receiving_traceability_mass
• Sources:

Waste flows

Rejected material and removed shells (preparation_rejects_shells)

Record rejected organisms, debris and shells removed from products marketed without shell; classify a separately sold output as a co-product instead of waste.

• Selected flow: Bivalve preparation rejects and shells
• Flow property / unit: Mass / kg
• Amount rule: measured destination-specific mass; the provisional range is replaced when complete batch or reporting-period mass balances are available
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg received bivalve material
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_waste_balance
• Sources:
• Range: Provisional reject and removed-shell fraction
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.95
  • Unit: kg/kg received bivalve material
  • Basis: route- and presentation-specific screen; replace with measured destination-specific mass
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Preparation wastewater (preparation_wastewater)

Record wastewater leaving the foreground process before any linked treatment dataset.

• Selected flow: Preparation wastewater
• Flow property / unit: Mass / kg
• Amount rule: measured discharge or calculated water balance; replace the provisional range when discharge metering or a reconciled water balance covers the reporting period
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted prepared bivalve material
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_water_waste_balance
• Sources:
• Range: Provisional preparation-wastewater screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg/kg accepted prepared material
  • Basis: applies only to wastewater crossing this process boundary; replace with metered or reconciled records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Primary preservation (primary_preservation)

Inputs

Product flows

Prepared bivalve input (prepared_bivalve_input)

Transfer only the accepted prepared material assigned to the declared route.

• Selected flow: Prepared clams, cockles or ark shells
• Flow property / unit: Mass / kg
• Amount rule: measured transfer mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per preservation batch
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_inputs_energy
• Sources:

Route electricity (route_electricity)

Record electricity used by the selected freezing, smoking, drying, salting or brining route; do not combine route records.

• Selected flow: Electricity, delivered
• Flow property / unit: Energy / kWh
• Amount rule: metered or allocated electricity for the declared route; the provisional range is only a within-route screen and is replaced when route-line meters or reconciled energy records cover the reporting period
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg preserved route output
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_inputs_energy
• Sources:
• Range: Provisional route-electricity screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kWh/kg preserved route output
  • Basis: use only within the same declared route and technology; not for cross-route comparison; replace with metered or reconciled records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Salt or brine ingredients (route_salt_brine)

Record salt, water and other brine ingredients only for the salted or brine route, separated by ingredient in the implemented inventory.

• Selected flow: Salt or brine ingredient
• Flow property / unit: Mass / kg
• Amount rule: measured ingredient issue less documented return; absent for other routes; replace the provisional range when formulation and batch-issue records cover the reporting period
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg salted or brined route output
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_inputs_energy
• Sources:
• Range: Provisional salt-or-brine-input screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg/kg salted or brined route output
  • Basis: applies only to the selected salted or brine route; replace with formulation and batch-issue records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Smoking medium (route_smoking_medium)

Record smoke-generating material or smoke preparation only for the smoked route, with energy fuels retained as separate carrier rows.

• Selected flow: Smoking medium
• Flow property / unit: Mass / kg
• Amount rule: measured consumption assigned to smoked output; absent for other routes; replace the provisional range when batch issue and return records cover the reporting period
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg smoked route output
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_inputs_energy
• Sources: codex-cxc-52-2003
• Range: Provisional smoking-medium screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 2
  • Unit: kg/kg smoked route output
  • Basis: applies only to the selected smoked route and declared medium; replace with batch records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Glazing water (route_glazing_water)

Record water retained as protective glaze only for a glazed frozen route; keep other process water separate.

• Selected flow: Glazing water
• Flow property / unit: Mass / kg
• Amount rule: measured glaze addition reconciled to gross and deglazed mass; absent when unglazed or on other routes; replace the provisional range when glaze checks cover every represented product family
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg deglazed frozen route output
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_condition_mass
• Sources:
• Range: Provisional glaze-fraction screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.5
  • Unit: kg/kg deglazed frozen product
  • Basis: applies only to glazed frozen product; replace with documented gross/deglazed checks
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Preserved bivalve product (preserved_bivalves)

Record the output of the single declared route with route-specific moisture, salt, glaze or packing-medium condition.

• Selected flow: Preserved clams, cockles or ark shells
• Flow property / unit: Mass / kg
• Amount rule: measured route output reconciled by calc_route_yield
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per preservation batch
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_condition_mass
• Sources: codex-cxc-52-2003

Waste flows

Spent brine and route wastewater (route_brine_wastewater)

Record spent brine and process wastewater only when generated by the selected route, before linked treatment.

• Selected flow: Spent brine or route wastewater
• Flow property / unit: Mass / kg
• Amount rule: measured discharge or reconciled route water and salt balance; absent when not generated; replace the provisional range when route-specific discharge records cover the reporting period
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg preserved route output
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_water_waste_balance
• Sources:
• Range: Provisional spent-brine-and-wastewater screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg/kg preserved route output
  • Basis: applies only when the selected route generates this flow; replace with discharge records or a reconciled route balance
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Packaging, controlled holding and release (packaging_holding_release)

Inputs

Product flows

Preserved product input (preserved_product_input)

Record preserved product entering final conditioning and release without mixing route or presentation records.

• Selected flow: Preserved clams, cockles or ark shells
• Flow property / unit: Mass / kg
• Amount rule: measured transfer mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per release lot
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_holding_release
• Sources:

Immediate packaging (immediate_packaging)

Record each primary and secondary packaging material crossing the facility boundary; packaging is inventory input but not part of the 1 kg reference mass.

• Selected flow: Immediate packaging material
• Flow property / unit: Mass / kg
• Amount rule: bill-of-material or measured packaging issue less documented return; replace the provisional range when packaging specifications cover all represented formats
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg qualified saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_holding_release
• Sources: eu-pef-2021-2279
• Range: Provisional immediate-packaging screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.001
  • Upper: 0.5
  • Unit: kg/kg qualified saleable product
  • Basis: includes only immediate packaging in the declared format; replace with bill-of-material or issue records
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Controlled-holding electricity (holding_electricity)

Record electricity for frozen storage or other specified in-facility temperature/humidity holding through release; absent where no controlled holding is required.

• Selected flow: Electricity, delivered
• Flow property / unit: Energy / kWh
• Amount rule: metered or allocated electricity using actual holding duration; the provisional range is replaced when equipment meters and lot residence-time records cover the reporting period
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg qualified saleable reference product
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_holding_release
• Sources: codex-cxc-52-2003
• Range: Provisional controlled-holding electricity screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kWh/kg qualified saleable product
  • Basis: applies only to declared in-facility controlled holding and its actual duration; replace with metered and residence-time records
  • Basis kind: Storage duration (storage_duration)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Qualified saleable reference product (reference_product)

This is the exact generic Tiangong CPC 21265 product flow on the declared route, presentation and saleable mass basis.

• Selected flow: Clams, cockles and ark shells, frozen, smoked, dried, salted or in brine 7a159b9e-de7a-4ef0-906e-8f2e8615d6cd
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: exactly 1 kg qualified saleable product content excluding immediate packaging
• Value mode: Fixed value (fixed_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: PCR reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Sources: unsd-cpc-3-0-21265

Waste flows

Packaging scrap (packaging_scrap)

Record offcuts, damaged packs and other packaging material not incorporated into released units, by material and destination.

• Selected flow: Packaging scrap
• Flow property / unit: Mass / kg
• Amount rule: measured or reconciled packaging issue minus packaged output; replace the provisional range when material-specific issue and scrap records cover the reporting period
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg immediate packaging input
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_holding_release
• Sources:
• Range: Provisional packaging-scrap fraction
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.25
  • Unit: kg/kg immediate packaging input
  • Basis: material-specific screen; replace with reconciled issue and scrap records
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoid	Route, product and line burdens	First avoid allocation through route-specific records, process subdivision and direct measurement. Never average the five mutually exclusive preservation routes into one foreground result.	eu-pef-2021-2279
allocation_coproduct	Saleable shell, meat, meal or other co-products	Where subdivision is not feasible, use a documented physical causal relationship; use economic allocation only when no defensible physical relationship exists, and report the method, factor basis, prices and sensitivity.	eu-pef-2021-2279
allocation_waste_credit	Rejects, shells, spent brine and packaging waste	Treat an output as waste when the holder discards or pays for its management. Do not assign an avoided-burden credit inside this foreground dataset unless a separate consequential or circularity scenario is explicitly selected and documented.	eu-pef-2021-2279

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_receiving_traceability_mass	receiving_preparation	received and accepted bivalve masses	receiving lot and calibrated scale records	lot_id; supplier; source_area; harvest_or_supplier_status; species_or_group; incoming_state; shell_presentation; prior_treatment; receipt_temperature; gross_mass; tare_mass; accepted_mass; reject_mass	weigh each lot and link records to traceability documentation	kg; deg C where recorded	each received lot	complete represented production period, normally 12 consecutive months or a justified seasonal campaign	all source suppliers and facility receiving points represented	sum net mass by route, presentation and destination; no cross-route averaging	scale calibration; lot reconciliation; traceability and applicable harvest/processing control evidence
cp_water_waste_balance	receiving_preparation; primary_preservation	water, wastewater, rejects and spent brine	meter, batch, tank and waste destination records	meter_start; meter_end; batch_water; retained_water; discharge_mass_or_volume; salt_mass; reject_mass; waste_destination	meter where available, otherwise reconciled batch balance with conversion evidence	kg; m3 with measured density where converted	each batch or at least monthly meter interval	complete represented production period	all included lines and discharge points	allocate only by documented causal driver, then normalize to relevant process output	meter calibration; tank calibration; balance closure; destination receipts
cp_route_inputs_energy	primary_preservation	route inputs, electricity, fuels and smoking media	route batch sheets, meters, invoices and material issue/return records	route; batch_id; input_mass; output_mass; ingredient_mass; electricity_kwh; fuel_quantity; smoking_medium_issue; returned_quantity; operating_time	segregate records by exactly one route and reconcile invoices to meters or batch issues	kg; kWh; carrier-specific unit	each batch with monthly reconciliation	complete represented production period or justified route campaign	each included route line and technology	subtract documented returns; allocate shared utilities by measured operating driver; normalize to route output	meter calibration; invoice reconciliation; formulation and batch authorization
cp_product_condition_mass	primary_preservation; packaging_holding_release	moisture, salt, glaze, packing medium and saleable mass condition	laboratory, QA and check-weigh records	route; presentation; cooked_state; moisture_value_and_basis; salt_value_and_basis; gross_frozen_mass; deglazed_mass; glaze_mass; net_contents; drained_mass; packing_medium_mass; release_status	use documented facility methods and calibrated balances; keep test basis with result	kg; mass fraction; percent as declared	each release lot or statistically justified lot plan	complete represented product families and period	every route-presentation-mass-basis combination	calculate separate averages for each declared combination; do not pool incompatible bases	method identifier; laboratory or QA record; calibration; sample plan
cp_packaging_holding_release	packaging_holding_release	packaging, holding energy, duration, scrap and released product	bill of material, packaging issue, storage meter, inventory movement and release records	packaging_material; packaging_issue; returned_packaging; scrap_mass; storage_zone; meter_reading; entry_time; release_time; released_content_mass; release_specification	reconcile material issue and storage energy to released lots and actual residence time	kg; kWh; hour or day	each lot with monthly reconciliation	complete represented production period	all packaging formats and in-facility controlled storage zones	normalize material and allocated holding energy to released product content mass	specification revision; meter and scale calibration; issue-return reconciliation; release authorization

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_mass	Reference product	Select the declared mass basis: in-shell or marketed shucked content; deglazed mass for glazed frozen product unless another market basis is disclosed; drained mass for brined product when that is the marketed basis, otherwise net contents with packing-medium fraction. Exclude immediate packaging.	release mass; presentation; gross and deglazed mass; drained mass; net contents; packing-medium mass; release specification	kg qualified saleable product content	codex-cxc-52-2003
calc_preparation_mass_balance	Receiving and preparation	accepted prepared mass = received net mass - rejects - removed shell - other documented losses, with any retained water separately reported	received net mass; rejects; removed shell; other losses; retained water	kg accepted prepared material and balance closure
calc_route_yield	Primary preservation	route yield = preserved route output mass / prepared route input mass; calculate separately for each route, presentation and moisture/salt condition	prepared input mass; preserved output mass; route and condition qualifiers	route-specific mass yield
calc_specific_inventory	All foreground inputs and outputs	specific amount = reconciled amount assigned to the process / corresponding process output or PCR reference mass stated on the row	collected amount; allocation driver; process output; reference mass	row amount on declared basis	eu-pef-2021-2279
calc_holding_energy	Controlled holding	lot holding electricity = zone electricity x documented lot occupancy driver / total zone occupancy driver; retain actual holding duration and do not assign storage to lots that bypass it	zone electricity; entry and release time; mass or pallet occupancy driver	kWh per kg released content for applicable lots	eu-pef-2021-2279

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity_traceability	Received and released product	Preserve lot-level source, species or commercial group, incoming state, route, presentation and release identity, together with applicable harvest, growing-area, purification or approved processing evidence.	receiving records, supplier documents, traceability link and release record; codex-cxc-52-2003
dq_route_separation	All inventory	Maintain separate batch or allocation records for each mutually exclusive route and each incompatible mass basis; report shared-utility allocation drivers.	route batch sheets, meters and allocation workbook
dq_temporal_coverage	Foreground activity data	Represent normally 12 consecutive months; a shorter seasonal campaign is allowed only when it covers the complete production season and its representativeness is justified.	date-stamped source records and representativeness statement
dq_mass_condition	Reference flow	Retain measured or specified moisture, salt, glaze, drained-mass or net-contents data wherever applicable; never infer cross-route equivalence from equal wet mass.	QA tests, check-weighs and release specification
dq_completeness	Foreground boundary	Reconcile product, water, salt/brine, energy, packaging, waste and direct-release records; disclose missing flows, proxies and excluded operations.	mass/energy reconciliation and completeness checklist; eu-pef-2021-2279
dq_reasoned_estimates	All provisional ranges	Treat every reasoned_estimate range only as a candidate-stage QA screen, not as a measured default or publication-critical allowed range. Replace it when the row-specific trigger stated in the Amount rule or Basis is met; until then disclose use, route, condition and uncertainty.	estimate register linked to foreground collection gaps and replacement evidence

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_identity	Reference flow	Require product-flow UUID 7a159b9e-de7a-4ef0-906e-8f2e8615d6cd, Mass UUID 93a60a56-a3c8-11da-a746-0800200b9a66, Units of mass UUID 93a60a57-a4c8-11da-a746-0800200c9a66, unit kg and reference amount exactly 1.	unsd-cpc-3-0-21265
validate_scope_route	Product category	Require a covered presentation and exactly one route token from frozen, smoked, dried, salted, or brine; reject live/fresh/chilled, otherwise-preserved, inedible or unfit products and unreviewed combined routes.	unsd-cpc-3-0-21265
validate_mass_basis	Reference product	Require packaging exclusion and all applicable in-shell/shucked, moisture, salt, glaze/deglazed, drained-mass/net-contents and packing-medium declarations before accepting the 1 kg reference.	codex-cxc-52-2003
validate_processes	Process map	Require all three process inventories and confirm that route-inapplicable preservation rows are absent; require additional carrier, refrigerant, ingredient, emission or waste rows whenever they actually cross the foreground boundary.	eu-pef-2021-2279
validate_traceability_control	Bivalve receipt and release	Require lot linkage and evidence of applicable source-area, harvest, purification or approved processing controls, plus controlled storage and handling conditions.	codex-cxc-52-2003
validate_inventory_records	Foreground amounts	Require collection protocol links for collected or calculated rows, compatible normalization bases, route-separated calculations and disclosure of proxies or missing records.	eu-pef-2021-2279
validate_allocation	Shared processes and outputs	Require subdivision or direct measurement first; where allocation remains, require the selected causal or economic basis, factors, data period and sensitivity disclosure.	eu-pef-2021-2279
validate_reasoned_estimates	Provisional QA ranges	Flag every used reasoned_estimate as temporary and route/condition-specific; fail reviewed use if a replacement trigger has been met but the range has not been replaced by foreground or source-backed evidence.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground processing dataset for one declared CPC 21265 product route, presentation and saleable mass basis
downstream_use	secondary_dataset; background_dataset
allowed_use	Attributional modelling of the represented route, technology, geography, period, presentation and mass condition; connection to documented upstream cultivation or harvest datasets and downstream distribution or life-cycle models
excluded_use	Live, fresh or chilled molluscs; other prepared or preserved products; unfit products; route-average substitution; unreviewed multi-route products; comparisons across in-shell/shucked, wet/dry, glazed/deglazed or drained/net-content bases without explicit conversion
required_metadata	Species or commercial group; origin and traceability basis; incoming state; shell presentation; exactly one route; cooked state; final moisture and salt condition; glaze and deglazed mass; drained-mass or net-contents basis and packing-medium fraction; packaging; facility geography; production period; technology; holding condition; upstream dataset links
required_quality_disclosure	Temporal and site coverage; meter and scale calibration; mass and energy balance closure; route separation; allocation method; rejected lots; waste destinations; proxies; missing flows; all reasoned_estimate uses and replacement status
update_trigger	Change in route, species/presentation mix, mass-basis specification, food-safety control, formulation, technology, packaging, holding regime, allocation basis, source requirement or upstream dataset; or availability of foreground/source evidence that replaces a provisional estimate

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-3-0-21265	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0, subclass 21265, CPC_Ver_3.0_Structure_30Jun2025.csv, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-08-11)	Exact generic product scope, inclusions, exclusions and mutually exclusive route vocabulary
codex-cxc-52-2003	standard	Codex Alimentarius, CXC 52-2003, Code of Practice for Fish and Fishery Products, https://workspace.fao.org/sites/codex/Standards/CXC%2052-2003/CXC_052e.pdf (accessed 2026-08-11)	Bivalve traceability, source-area and harvest controls, hygienic processing, packaging, storage and route-control requirements
eu-pef-2021-2279	official_guidance	Commission Recommendation (EU) 2021/2279, Annex I, Product Environmental Footprint Method, http://data.europa.eu/eli/reco/2021/2279/oj (accessed 2026-08-11)	Functional unit, system boundary, inventory completeness, allocation hierarchy, data quality and life-cycle dataset use