Mussels, frozen, smoked, dried, salted or in brine

1. Scope and Applicability

This PCR covers food-grade mussels, in shell or removed from shell, placed on the market after exactly one declared primary preservation route: frozen, smoked, dried, salted, or packed in brine. A smoked product may be cooked before or during smoking. Food-grade mussel flours, meals, and pellets are covered only when their preservation route and saleable mass basis remain traceable to this scope.

Live, fresh, or chilled mussels, otherwise prepared or preserved mussel products, inedible meals or pellets, dead mussels not fit for human consumption, and products outside the declared five preservation routes are excluded. Aquaculture or wild harvest is represented by upstream datasets and is not recreated inside the foreground processing boundary.

The five preservation routes are mutually exclusive alternatives for a concrete foreground data package. Do not stack freezing, smoking, drying, salting, and brining unless the actual marketed product intentionally uses more than one treatment; such a combined treatment is outside this PCR until separately reviewed. Route-specific water, energy, salt or brine, smoking medium, storage, yield, and waste records must never be averaged across unlike routes.

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.mussels-frozen-smoked-dried-salted-or-in-brine
classification_refs	CPC 3.0: 21263, exact
covered_products	Food-grade mussels, whether in shell or not, frozen, smoked, dried, salted, or in brine; smoked mussels whether or not cooked before or during smoking; food-grade mussel flours, meals, and pellets when traceable to a covered route
excluded_products	Live, fresh, or chilled mussels; otherwise prepared or preserved mussels; inedible mussel flours, meals, or pellets; dead or unfit mussels; combined preservation routes not separately reviewed
representative_product	Qualified saleable mussel product from one declared preservation route
production_route	Receipt and preparation; exactly one of freezing, smoking, drying, salting, or brining; packing and release; controlled storage when required
market_state	Finished food product at the processing-facility gate, with preservation route, shell state, and mass basis declared

3. Reference Flow

Field	Value
What	A qualified saleable mussel food product produced through one declared covered preservation route
How much	1 kg net mussel product on the applicable route-specific measurement basis
How well	Meets the declared product specification and applicable food-safety release criteria, with route, shell state, edible-portion basis, and relevant composition or drainage qualifiers recorded
How long or cycle	One production batch at processing-facility gate; storage duration is reported separately when controlled storage occurs
reference_flow_link	reference_product

Field	Value
Reference amount	1 kg
Reference product flow	Mussels, frozen, smoked, dried, salted or in brine b40a9b04-158a-4482-8c52-022d30f1a99a
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	preservation_route; species_or_species_mix; shell_state; edible_portion_basis; packaging_inclusion; moisture_content_if_dried; salt_content_or_brine_strength_if_salted_or_in_brine; glaze_presence_and_net_mass_excluding_glaze_if_frozen; drained_weight_basis_if_packed_in_brine; smoking_and_cooking_state_if_smoked

When constructing a foreground data package, every applicable required qualifier must be declared in dataset metadata, process notes, reference-flow comments, product descriptions, or an equivalent field. The Tiangong flow is the exact generic CPC 21263 product flow; the qualifiers make a concrete product instance unambiguous.

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	Report exactly 1 kg qualified saleable product, excluding packaging. Include shell mass only for a product declared and sold in shell; otherwise use edible mussel meat mass.
frozen_net_mass	frozen route	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Exclude ice glaze and packaging from the 1 kg reference mass; record glaze water and packaging separately.
brine_drained_mass	product packed in brine	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use drained mussel product mass after the declared, reproducible drainage procedure; record packing brine separately and disclose the procedure and brine strength.
route_composition_basis	dried, salted, brined, or smoked route	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure product at release and report moisture for dried product, salt content or brine strength for salted or brined product, and smoking and cooking state for smoked product. Do not compare routes unless shell state and mass/composition basis are harmonized.
packaging_separation	all routes	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Packaging is inventoried inside production but is never counted in the 1 kg product mass.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Mussels received at the processing facility with species or mix, origin, live/raw/fresh/chilled/frozen condition, shell state, and received mass declared
starting_condition_role	Upstream product input to foreground preparation and preservation
product_classification_scope	The output is limited to the generic food-grade mussel products covered by CPC 3.0 21263 and one declared preservation route
recursive_input_rule	If a covered preserved mussel product is used as an input, record it as an upstream product flow with a compatible dataset and do not reopen its preservation inventory inside the receiving process
upstream_dataset_requirement	Require traceable upstream datasets for mussel production or harvest, received precursor, energy carriers, preservation materials, packaging, water supply, transport to the facility, and waste treatment when those systems cross the study boundary
disclosure	Declare geography, technology, reporting period, species, origin, shell state, preservation route, yield basis, mass and composition basis, packaging, storage conditions, cut-offs, proxies, allocation, and any reasoned estimates

rule_id	Applies to	Rule	source_ids
sb_foreground_route	foreground processing	Include receipt/preparation, the one selected preservation route, packing/release, and actual controlled storage through the declared facility gate.	codex-cxc-52-2003; eu-pef-2021
sb_route_exclusivity	preservation alternatives	Model freezing, smoking, drying, salting, and brining as mutually exclusive alternatives unless an intentionally combined product has been separately reviewed; never average route inventories.	unsd-cpc-30-21263; codex-cxc-52-2003
sb_upstream_completeness	upstream inputs	Connect all material product and service inputs to representative upstream datasets and disclose exclusions or proxies; do not duplicate an upstream preserved-mussel process.	eu-pef-2021

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
raw_material_preparation	Raw mussel receipt and preparation	required	Always	Foreground receipt, washing, grading, de-shelling or trimming as applicable	kg prepared mussels
route_preservation	Route-specific preservation	required	Select exactly one of frozen, smoked, dried, salted, or brined	Foreground preservation	kg preserved mussels
packing_and_release	Packing and release	required	Always	Foreground packing, quality release, and reference product output	1 kg saleable product
controlled_storage	Controlled storage	conditional	Include when frozen, chilled, humidity-controlled, or other active holding occurs before facility gate	Foreground holding	kg packed product and storage time

Reasoned-estimate ranges below are deliberately broad candidate-stage screening aids, not publication defaults or product specifications. They apply only when direct route- and site-specific records are temporarily unavailable. Replace them when the representative route and facility are selected, supplier/site records become available, or at least three representative production batches have been measured. An out-of-range record triggers review and disclosure, not automatic replacement by the estimate.

Process: Raw mussel receipt and preparation (raw_material_preparation)

Inputs

Product flows

Received mussels (received_mussels)

Record the measured mass and declared condition of mussels entering preparation, including shell state and origin.

• Selected flow: Received food-grade mussels
• Flow property / unit: Mass / kg
• Amount rule: measured received mass normalized to prepared output and final reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg final reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preparation_batch
• Range: Provisional received-mussel screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 10
  • Unit: kg/kg final reference product
  • Basis: route-, shell-, and yield-dependent received mass per 1 kg final product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Preparation utilities (preparation_utilities)

Record water and energy separately by actual flow and unit for washing, conditioning, grading, de-shelling, and cleaning.

• Selected flow: Process water and preparation energy carriers, each recorded separately
• Flow property / unit: Mass / kg for water; Energy / kWh or carrier-specific unit for energy
• Amount rule: metered or invoice-derived use allocated to the batch
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg prepared mussels
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preparation_batch
• Sources: codex-cxc-52-2003
• Range: Provisional utility screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg water or kWh energy per kg prepared mussels, interpreted separately by flow
  • Basis: broad candidate-stage utility screen; never sum unlike units
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Outputs

Product flows

Prepared mussels (prepared_mussels)

Record prepared mussels transferred to the selected preservation route, with shell and edible-portion basis unchanged or explicitly converted.

• Selected flow: Prepared mussels
• Flow property / unit: Mass / kg
• Amount rule: measured transfer mass
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per preparation batch
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preparation_batch

Waste flows

Preparation rejects and effluent (preparation_losses)

Record shells, unsuitable mussels, solids, and wastewater as separate waste flows even when reported under this shared role.

• Selected flow: Preparation wastes, separated by destination
• Flow property / unit: Mass / kg
• Amount rule: measured or mass-balance-calculated waste by type and treatment destination
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg prepared mussels
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_batch
• Range: Provisional preparation-loss screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg/kg prepared mussels
  • Basis: combined wet waste before separation by destination
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process: Route-specific preservation (route_preservation)

Inputs

Product flows

Prepared mussels transferred to preservation (preservation_feed)

Record only the feed to the selected route and retain its preparation batch linkage.

• Selected flow: Prepared mussels
• Flow property / unit: Mass / kg
• Amount rule: measured route feed mass
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per preservation batch
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preservation_batch

Route preservation inputs (preservation_inputs)

Record each actual input separately: refrigeration or freezing energy for frozen product; smoking fuel or medium and energy for smoked product; heat and airflow energy for dried product; salt for salted product; or salt, water, and prepared brine for brined product.

• Selected flow: Route-specific energy carriers and preservation materials, each recorded separately
• Flow property / unit: Native flow property and unit, with energy additionally reportable in kWh
• Amount rule: metered, purchased, or batch-formulation amount for the one selected route
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg preserved mussels
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preservation_batch
• Sources: codex-cxc-52-2003
• Range: Provisional route-input screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg material or kWh energy per kg preserved mussels, interpreted separately by flow
  • Basis: broad route-specific candidate screen; never sum unlike units or apply to an unselected route
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Outputs

Product flows

Preserved mussels (preserved_mussels)

Record preserved output mass with the selected route and its applicable moisture, salt/brine, glaze, shell, drainage, and smoking/cooking qualifiers.

• Selected flow: Route-qualified preserved mussels
• Flow property / unit: Mass / kg
• Amount rule: measured preserved output at route completion
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per preservation batch
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preservation_batch
• Range: Provisional route-yield screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.05
  • Upper: 2
  • Unit: kg/kg prepared mussels
  • Basis: route-dependent output-to-feed mass ratio before final packing
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Preservation wastes (preservation_wastes)

Record spent brine, wastewater, condensate, smoking residues, rejects, and off-specification product separately by actual route and destination.

• Selected flow: Route-specific preservation waste, separated by type and destination
• Flow property / unit: Mass / kg
• Amount rule: measured or mass-balance-calculated route waste
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg preserved mussels
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preservation_batch
• Sources: codex-cxc-52-2003
• Range: Provisional preservation-waste screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg/kg preserved mussels
  • Basis: wet route waste before separation by waste type
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Direct route emissions (direct_route_emissions)

Record measured or calculated direct smoke, combustion, particulate, or refrigerant emissions only when they cross the environment boundary at the facility; do not duplicate treatment emissions already represented upstream.

• Selected flow: Route-specific direct elementary emissions, each recorded separately
• Flow property / unit: Mass / kg
• Amount rule: measured emission or calculation from collected fuel or refrigerant records using a documented factor
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg preserved mussels
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preservation_batch
• Range: Provisional direct-emission screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1
  • Unit: kg/kg preserved mussels per individual elementary flow
  • Basis: broad candidate-stage screen for onsite direct emissions
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process: Packing and release (packing_and_release)

Inputs

Product flows

Preserved mussels transferred to packing (packing_feed)

Record the measured preserved product transferred to packing under the same route and mass qualifiers.

• Selected flow: Route-qualified preserved mussels
• Flow property / unit: Mass / kg
• Amount rule: measured packing feed mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per packing batch
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packing_batch

Packaging materials (packaging_materials)

Record primary, secondary, and tertiary packaging separately by material and measured purchased or issued mass; exclude all packaging from reference product mass.

• Selected flow: Packaging materials, each recorded separately
• Flow property / unit: Mass / kg
• Amount rule: measured packaging issued minus returned usable stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg final reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packing_batch
• Sources: eu-pef-2021
• Range: Provisional packaging screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.001
  • Upper: 0.5
  • Unit: kg/kg final reference product
  • Basis: all packaging material placed on the market per 1 kg product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Outputs

Product flows

Qualified saleable reference product (reference_product)

This is the quantitative reference output after release checks and route-specific mass adjustment.

• Selected flow: Mussels, frozen, smoked, dried, salted or in brine b40a9b04-158a-4482-8c52-022d30f1a99a
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: exactly 1 kg net qualified saleable product on the declared measurement basis
• Value mode: Fixed value (fixed_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Method formula (method_formula)
• Sources: eu-pef-2021

Waste flows

Packing rejects and packaging waste (packing_waste)

Record off-specification product and unused or damaged packaging separately by treatment destination.

• Selected flow: Packing waste, separated by material and destination
• Flow property / unit: Mass / kg
• Amount rule: measured waste mass
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg final reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packing_batch
• Range: Provisional packing-waste screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.5
  • Unit: kg/kg final reference product
  • Basis: combined product and packaging waste before separation
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process: Controlled storage (controlled_storage)

Inputs

Product flows

Packed product entering storage (storage_feed)

Record packed product entering active storage and preserve its route and batch linkage.

• Selected flow: Packed route-qualified mussel product
• Flow property / unit: Mass / kg
• Amount rule: measured mass entering controlled storage
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per storage lot
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_storage_records

Storage energy (storage_energy)

Record metered refrigeration, freezing, ventilation, humidity control, or other active storage energy for the actual duration; omit this process when no active storage occurs.

• Selected flow: Storage energy carriers, each recorded separately
• Flow property / unit: Energy / kWh or carrier-specific unit
• Amount rule: metered or invoice-derived energy allocated by stored mass and time
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg product and declared storage duration
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_storage_records
• Sources: codex-cxc-52-2003
• Range: Provisional storage-energy screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kWh/kg product
  • Basis: active storage through the facility gate for the declared duration
  • Basis kind: Storage duration (storage_duration)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Outputs

Product flows

Stored saleable product (stored_product)

Record saleable product leaving controlled storage; losses and changes in glaze, moisture, or drained mass must be reconciled before normalization to the reference flow.

• Selected flow: Mussels, frozen, smoked, dried, salted or in brine b40a9b04-158a-4482-8c52-022d30f1a99a
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net saleable mass leaving storage
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per storage lot
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_storage_records

Elementary flows

Refrigerant loss during storage (storage_refrigerant_loss)

Record refrigerant loss to air only for refrigeration equipment inside the boundary, calculated from charge and service records with a disclosed substance-specific method.

• Selected flow: Refrigerant emission to air, substance-specific
• Flow property / unit: Mass / kg
• Amount rule: calculated loss from equipment charge and service records
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product and declared storage duration
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_storage_records
• Range: Provisional refrigerant-loss screening estimate
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.1
  • Unit: kg/kg stored product
  • Basis: broad candidate-stage screen for onsite refrigerant loss
  • Basis kind: Storage duration (storage_duration)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoid	all foreground processes	Avoid allocation by subdividing separately metered operations and directly assigning route-specific inputs, outputs, wastes, and emissions wherever feasible.	eu-pef-2021
allocation_residuals	shells, rejects, recovered materials, or other co-products	First distinguish waste from a co-product using the applicable study rules. Assign treatment burdens to waste; for a co-product, use a documented physical causal relationship when defensible, otherwise use economic allocation and disclose prices, period, geography, and sensitivity.	eu-pef-2021
allocation_no_cross_route	shared equipment or utilities	Allocate shared services only among products actually using them during the reporting period; never distribute burdens from an unselected preservation route to the selected route.	eu-pef-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_preparation_batch	raw_material_preparation	received mass, utilities, prepared output, rejects and effluent	batch ticket, scale record, meter, invoice, waste manifest	batch_id; species; origin; received_condition; shell_state; input_mass; water; energy_by_carrier; prepared_mass; waste_by_type	calibrated scales and meters, reconciled to batch records	kg; kWh; carrier-specific unit	each batch with monthly reconciliation	representative reporting year or disclosed campaign	each processing facility	sum by flow and divide by conforming prepared or final output as specified	calibration records, invoices, batch traceability, waste receipts
cp_preservation_batch	route_preservation	route feed, route inputs, preserved output, wastes and direct emissions	batch recipe, meter, scale, process log, laboratory result	batch_id; preservation_route; feed_mass; energy_by_carrier; water; salt; brine; smoking_medium; output_mass; moisture; salt_content; glaze_mass; drained_mass; waste; direct_emission_inputs	route-specific metering and scales with laboratory or specification checks	kg; kWh; carrier-specific unit; percent where applicable	each batch	representative reporting year with seasonal coverage	each route at each facility	aggregate only identical declared routes and mass bases; normalize to preserved and final output	calibration, recipe, meter, lab, release, and traceability records
cp_packing_batch	packing_and_release	preserved feed, packaging, reference product, packing waste	packing order, bill of materials, scale, release record	batch_id; route; feed_mass; packaging_by_material; net_product_mass; shell_state; glaze_or_drained_adjustment; rejects; release_status	reconcile issued packaging and measured net product to released units	kg	each packing batch	representative reporting year	each packing line and facility	sum conforming outputs and normalize all inputs and wastes to 1 kg reference product	scale calibration, packaging specifications, release and reconciliation records
cp_storage_records	controlled_storage	stored mass, duration, energy, refrigerant loss	stock ledger, temperature log, meter, invoice, refrigerant service log	lot_id; route; mass_in; mass_out; time_in; time_out; temperature_or_humidity_setpoint; energy_by_carrier; refrigerant_type; charge; additions; recoveries	reconcile stock-time with metered energy and equipment service records	kg; hour or day; kWh; refrigerant-specific kg	continuous or each lot with monthly reconciliation	actual storage period within representative reporting year	each controlled store and refrigeration system	allocate measured energy by a disclosed mass-time or causal driver; calculate net refrigerant loss by substance	meter records, continuous logs, inventory reconciliation, service certificates

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	all foreground flows	normalized flow = batch flow divided by qualified saleable product mass on the applicable route-specific reference basis	batch flow; qualified net product mass excluding packaging, glaze, or packing brine as applicable	flow per 1 kg reference product	eu-pef-2021
calc_route_yield	preparation and preservation	yield = qualified output mass divided by input mussel mass, retaining route, shell state, moisture, salt/brine, glaze, and drainage basis	input mass; output mass; qualifiers	disclosed process yield	codex-cxc-52-2003
calc_mass_reconciliation	each process and batch	reconcile mass inputs, product outputs, wastes, measured water loss or gain, stock change, and unresolved difference; disclose the residual and investigation threshold	collected masses and composition adjustments	batch mass balance and residual	codex-cxc-52-2003
calc_storage_energy	controlled storage	allocated storage energy = metered store energy multiplied by the product allocation driver divided by total driver; prefer a causal mass-time or equipment-zone driver	meter energy; product mass; residence time; zone or equipment data	storage energy per kg product	eu-pef-2021

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	product and route	Retain species or mix, origin, route, shell state, edible-portion basis, packaging inclusion, and all applicable route-specific qualifiers.	batch traceability and release specification
dq_measurement	mass, energy, water, materials, wastes, and emissions	Use calibrated or verified measurement systems, preserve native units, document conversions, and keep route-specific records separate.	calibration, meter, invoice, scale, laboratory, and service records
dq_temporal	foreground dataset	Cover a representative reporting year where available or disclose campaign dates, seasonality, shutdowns, and deviations.	dated batch and operational records
dq_completeness	foreground and upstream links	Reconcile product and waste flows, include material utilities and packaging, link upstream and treatment datasets, and disclose exclusions, proxies, and unresolved mass-balance residuals.	mass balance, data-gap register, dataset links, and reviewer record
dq_reasoned_estimate	all provisional ranges	Use a reasoned estimate only while direct data are unavailable; disclose its temporary status and replace it when route/site records are obtained or three representative batches are measured.	estimate register and replacement review record

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validation_reference_identity	reference flow	Require product UUID b40a9b04-158a-4482-8c52-022d30f1a99a, Mass UUID 93a60a56-a3c8-11da-a746-0800200b9a66, Units of mass UUID 93a60a57-a4c8-11da-a746-0800200c9a66, unit kg, and exactly 1 kg qualified product.	unsd-cpc-30-21263
validation_qualifiers	product metadata	Fail completeness when preservation route, shell state, edible-portion basis, packaging inclusion, or any applicable moisture, salt/brine, glaze, drainage, smoking, or cooking qualifier is missing.	unsd-cpc-30-21263; codex-cxc-52-2003
validation_route_exclusivity	process inventory	Require exactly one covered preservation route and reject cross-route averaging; flag an intentional combined route for separate methodology review.	unsd-cpc-30-21263; codex-cxc-52-2003
validation_mass_basis	reference product	Require packaging to be excluded; require glaze exclusion for frozen product, drained product mass and disclosed drainage for brined product, and harmonized shell and composition basis before comparisons.	codex-cxc-52-2003
validation_inventory	foreground processes	Require the three core processes, require controlled storage when its condition applies, reconcile measured inputs, outputs, wastes, and stock changes, and disclose residuals and upstream data gaps.	codex-cxc-52-2003; eu-pef-2021
validation_estimates	reasoned estimates	Require each reasoned estimate to remain labelled provisional with its applicability and replacement trigger; it must not silently override foreground data or become a publication-critical allowed range.	eu-pef-2021

10. Published Dataset Profile

Field	Value
dataset_role	Foreground production dataset for one declared mussel preservation route and facility-gate output
downstream_use	secondary_dataset; background_dataset
allowed_use	Route-specific process or lifecycle modelling when geography, technology, time, shell state, mass basis, packaging, storage, allocation, and data quality are compatible
excluded_use	Generic averaging across preservation routes; comparison across unlike shell, edible-portion, moisture, salt/brine, glaze, drainage, or packaging bases; use of candidate reasoned estimates as reviewed default factors
required_metadata	PCR id; product UUID; CPC reference; species or mix; origin; facility geography; technology; reporting period; preservation route; shell state; edible-portion basis; packaging; applicable moisture, salt/brine, glaze, drainage, smoking and cooking qualifiers; storage; allocation; cut-offs; upstream datasets
required_quality_disclosure	Primary-data share; measurement and calibration evidence; temporal and route representativeness; mass-balance residuals; exclusions; proxies; allocation sensitivity; reasoned estimates and replacement status
update_trigger	New reviewed route-specific evidence; changed product specification, technology, regulation, source, UUID, or system boundary; representative foreground records replacing any reasoned estimate; material mass-balance or validation failure

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-30-21263	official_guidance	United Nations Statistics Division. CPC, Version 3.0, code 21263. https://unstats.un.org/unsd/classifications/Econ/Detail/EN/2100/21263 (retrieved 2026-08-11)	Exact category scope, included and excluded products, and preservation-route identity
codex-cxc-52-2003	standard	FAO and WHO. 2020. Code of Practice for Fish and Fishery Products, CXC 52-2003. https://doi.org/10.4060/cb0658en (retrieved 2026-08-11)	Bivalve receiving and handling, route-specific freezing, smoking, drying, salting and brining process controls, packing, storage, hygiene, traceability, and quality records
eu-pef-2021	official_guidance	European Commission. Commission Recommendation (EU) 2021/2279 on the use of the Environmental Footprint methods. https://eur-lex.europa.eu/eli/reco/2021/2279/oj (retrieved 2026-08-11)	Reference-flow definition, system-boundary completeness, primary data, allocation hierarchy, packaging, data quality, and disclosure