Other crustaceans, frozen, dried, salted or in brine

1. Scope and Applicability

This PCR applies to edible crustaceans other than shrimps and prawns that leave the reporting facility frozen, dried, dry-salted, or preserved in brine. It covers whole animals, sections, tails, claws, and picked meat, whether raw or cooked, when the declared product remains within that preservation scope.

The foreground boundary begins with accepted crustacean raw material at the processing-facility gate and ends with 1 kg net mass of packaged preserved product ready for dispatch. Harvest or aquaculture, inbound transport, distribution after dispatch, retail, preparation by the user, consumption, and end-of-life of packaging are outside this foreground boundary and require separate datasets when included in a study.

The foreground data package shall declare exactly which preservation route or measured product mix it represents. Frozen, dried, dry-salted, and brined production shall not be combined through an unconditional average. Canned, smoked-only, fermented, fresh/chilled-only, live, and shrimp or prawn products are excluded.

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.other-crustaceans-frozen-dried-salted-or-in-brine
classification_refs	CPC 3.0: 21259, exact classification reference
covered_products	Edible non-shrimp and non-prawn crustaceans preserved by freezing, drying, dry salting, or brining; whole, portioned, or meat forms; raw or cooked as declared
excluded_products	Shrimps and prawns; live or fresh/chilled-only crustaceans; canned, smoked-only, or fermented products; molluscs and other aquatic invertebrates; mixed seafood products without separable crustacean inventory
representative_product	Packaged preserved other-crustacean product at the processing-facility gate
production_route	Receipt and primary preparation, one explicitly declared preservation route, then packing and route-appropriate storage
market_state	Frozen, dried, dry-salted, or in brine; raw/cooked status and whole/portion/meat form declared

3. Reference Flow

Field	Value
What	Edible other-crustacean product preserved by the declared route and ready for dispatch
How much	1 kg net product mass, excluding packaging and free draining liquid unless that liquid is sold as part of the declared product
How well	Species or commercial group, anatomical form, raw/cooked state, preservation route, food-safety acceptance basis, and route-specific condition are declared
How long or cycle	One production lot through facility dispatch; storage duration within the foreground boundary is declared
reference_flow_link	The reference product output final_reference_product from packing_and_storage

Field	Value
Reference amount	1
Reference product flow	Other crustaceans, frozen, dried, salted or in brine ecae55b8-a320-44e8-9ea2-98d7ff34e4e3
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; wild-caught or farmed origin when known; whole/section/meat form; raw or cooked state; exact preservation route; glazing share for frozen product; final moisture basis for dried product; salt addition and dry-salted or brined state; whether brine is included in sale mass; packaging format; dispatch temperature; foreground storage duration

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

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_net_mass	Reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Normalize all inventory to 1 kg net edible product at dispatch. Exclude packaging and separately draining brine; disclose and subtract ice glaze not sold as product mass.
route_condition_basis	Frozen, dried, dry-salted, or brined product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Record mass at the declared dispatch condition and report glaze, moisture, and salt/brine basis needed to compare lots. Do not convert between preservation states without measured mass and condition data.
energy_unit_consistency	Electricity and thermal energy	Energy	kWh for electricity; MJ for thermal energy	Preserve metered units and document conversion factors. Allocate shared utility meters only through a documented calculation rule.
mass_balance_basis	Raw material, product, residues, water retained, and salt retained	Mass	kg	Reconcile input and output masses per lot; separately disclose evaporated water, drained liquid, wastewater, and unmeasured loss rather than forcing closure into product yield.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Accepted edible-grade crustacean raw material at the facility gate, with species/group, origin, incoming form, raw/cooked state, temperature, and prior preservation disclosed
starting_condition_role	Upstream product input to the foreground preparation process
product_classification_scope	Other crustaceans preserved by freezing, drying, dry salting, or brining; shrimp and prawn products are outside scope
recursive_input_rule	If an input is already a product within this PCR scope, record it once as a technosphere input with an upstream dataset and do not reconstruct its prior preservation recursively inside the foreground boundary
upstream_dataset_requirement	Use a geographically and technologically representative harvest/aquaculture and inbound-supply dataset for received crustaceans, or disclose a proxy and its limitations
disclosure	Declare the actual route, incoming and outgoing product condition, cooking or shell removal, facility geography, storage duration, packaging, co-products, waste treatment, and any excluded on-site operation

rule_id	applies_to	rule	source_ids
boundary_facility_gate	foreground_processes	Include receipt, primary preparation, the declared preservation operation, packing, route-appropriate on-site storage, on-site water and energy, direct refrigerant loss, and wastes or effluents to the point they leave the facility.	codex-cxc-52-2003; eu-pef-2021-2279
boundary_route_condition	preservation_route	Include only operations actually used for the declared lot: freezing and frozen storage, drying and any associated heating, dry salting, or brining. A multi-route result requires measured route shares and separate route inventories before aggregation.	codex-cxc-52-2003; fao-seafood-safety-quality-2003
boundary_food_safety_controls	reception_and_processing	Include resources and losses caused by potable-water/clean-ice use, temperature control, sanitation, product rejection, and documented hazard controls when they occur in the foreground system.	codex-cxc-52-2003; fao-seafood-safety-quality-2003
boundary_exclusions	life_cycle_model	Model harvest/aquaculture, inbound transport, post-dispatch distribution, retail, use, and end-of-life in separate linked datasets; do not silently omit them from a cradle-to-grave study.	eu-pef-2021-2279

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
reception_and_preparation	Reception and primary preparation	required	All covered products	Foreground receipt, washing as used, grading, cooking as used, shell removal or cutting, and separation of rejects/residues	kg accepted crustacean input and kg prepared crustacean output
declared_preservation	Declared preservation route	required	Exactly one route or a measured product mix: freezing, drying, dry salting, or brining	Foreground route-specific preservation	kg preserved bulk product
packing_and_storage	Packing and route-appropriate storage	required	All covered products; cold storage applies only to the frozen route	Foreground packing, storage, and dispatch preparation	1 kg net reference product

Process: Reception and primary preparation (reception_and_preparation)

Inputs

Product flows

Accepted crustacean raw material (accepted_crustacean_input)

Record the measured incoming mass that enters preparation.

• Selected flow: Other crustacean raw material; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured accepted lot mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_lot_mass_balance
• Sources:
• Range: Provisional raw-material input QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 10
  • Unit: kg/kg net reference product
  • Basis: broad candidate-stage range spanning meat, whole-product, and dried routes
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process water (preparation_water)

Record potable or otherwise food-suitable water crossing the foreground boundary for washing, cooking, thawing, or sanitation allocated to the lot.

• Selected flow: Process water; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured water use or allocated meter record
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_ice_records
• Sources: codex-cxc-52-2003
• Range: Provisional preparation-water QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg/kg net reference product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Ice used in handling (handling_ice)

Record purchased or on-site-produced food-suitable ice actually used for the lot; avoid double counting water and ice production.

• Selected flow: Ice; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured ice charged to the lot
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_ice_records
• Sources: codex-cxc-52-2003
• Range: Provisional ice-use QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 2
  • Unit: kg/kg net reference product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Prepared crustacean intermediate (prepared_crustacean_output)

Calculate the prepared mass transferred to the declared preservation route from lot records.

• Selected flow: Prepared crustacean intermediate; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured transfer mass
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_lot_mass_balance
• Sources:
• Range: Provisional preparation-yield QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.1
  • Upper: 1
  • Unit: kg/kg accepted crustacean input
  • Basis: prepared-output mass fraction of accepted input
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Shells, rejects, and other preparation residues (preparation_residues)

Separate measured edible rejects, shells, viscera, and other residues by destination; reclassify a sold output as a co-product.

• Selected flow: Crustacean preparation residue; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured residue mass by treatment or sale destination
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted crustacean input
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_lot_mass_balance
• Sources:
• Range: Provisional residue-fraction QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.9
  • Unit: kg/kg accepted crustacean input
  • Basis: broad replaceable range for whole, portioned, and meat forms
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Preparation wastewater (preparation_wastewater)

Record wastewater leaving preparation, including allocated sanitation water, without subtracting pollutants that require separate elementary or treatment records.

• Selected flow: Wastewater; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured discharge or water-balance calculation
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_waste_effluent_records
• Sources:
• Range: Provisional preparation-wastewater QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kg/kg net reference product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Declared preservation route (declared_preservation)

Inputs

Product flows

Prepared crustacean input (prepared_crustacean_input)

Transfer the prepared intermediate without duplicating upstream burdens.

• Selected flow: Prepared crustacean intermediate; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: equal to prepared_crustacean_output transferred to this route
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_lot_mass_balance
• Sources:

Preservation electricity (preservation_electricity)

Record metered or allocated electricity for freezing, drying fans, brine circulation, pumping, and route-specific equipment actually used.

• Selected flow: Electricity; Tiangong UUID pending review
• Flow property / unit: Energy / kWh
• Amount rule: metered or documented allocation of route electricity
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg preserved bulk product
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_input_records
• Sources:
• Range: Provisional preservation-electricity QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 20
  • Unit: kWh/kg preserved bulk product
  • Basis: broad replaceable range across declared routes and technologies
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Thermal energy for cooking or drying (preservation_thermal_energy)

Include only when the declared route cooks the product or uses supplied heat for drying.

• Selected flow: Thermal energy; Tiangong UUID pending review
• Flow property / unit: Energy / MJ
• Amount rule: measured fuel/steam/heat use converted to delivered thermal energy
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg preserved bulk product
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_input_records
• Sources:
• Range: Provisional thermal-energy QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 50
  • Unit: MJ/kg preserved bulk product
  • Basis: broad replaceable range; zero only when no cooking or thermal drying occurs
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Salt input (preservation_salt)

Include food-grade salt only for dry salting or brining and record retained and discharged salt through the lot balance.

• Selected flow: Sodium chloride; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured salt charged to the lot
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_input_records
• Sources: codex-cxc-52-2003
• Range: Provisional salt-input QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1
  • Unit: kg/kg net reference product
  • Basis: broad replaceable range; must be zero for routes without added salt
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Brining water (brining_water)

Include only for the brined route and distinguish fresh make-up water from recirculated brine.

• Selected flow: Process water; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured fresh water charged to brine preparation
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_route_input_records
• Sources: codex-cxc-52-2003
• Range: Provisional brining-water QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg/kg net reference product
  • Basis: broad replaceable range; must be zero outside the brined route
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Preserved bulk crustacean product (preserved_bulk_output)

Record product mass after the declared preservation route and before final packing.

• Selected flow: Preserved other-crustacean bulk product; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured preserved bulk transfer mass
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_lot_mass_balance
• Sources:
• Range: Provisional preserved-bulk transfer QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 1.5
  • Unit: kg/kg net reference product
  • Basis: broad replaceable allowance for packing loss and excluded free liquid
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Spent brine and preservation wastewater (spent_brine_wastewater)

Record spent brine, thaw/cook liquor, cleaning discharge, and other route wastewater separately where treatment differs.

• Selected flow: Saline wastewater or process wastewater; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: measured discharge or water-and-salt balance
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_waste_effluent_records
• Sources:
• Range: Provisional route-wastewater QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg/kg net reference product
  • Basis: broad replaceable range, with saline and non-saline streams distinguished
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Direct refrigerant loss during freezing (freezing_refrigerant_loss)

Include only for freezing equipment within the foreground boundary; identify the refrigerant and avoid counting maintenance charge as an emission.

• Selected flow: Refrigerant emission to air; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: annual or event-based refrigerant loss allocated to the declared frozen-product throughput
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg frozen bulk product
• Basis kind: Process output (process_output)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_storage_refrigeration_records
• Sources:
• Range: Provisional refrigerant-loss QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.1
  • Unit: kg/kg frozen bulk product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process: Packing and route-appropriate storage (packing_and_storage)

Inputs

Product flows

Preserved bulk product input (preserved_bulk_input)

Transfer the route-specific preserved bulk product to packing without mixing undeclared preservation states.

• Selected flow: Preserved other-crustacean bulk product; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: equal to preserved_bulk_output transferred to packing
• Value mode: Calculated value (calculated_value)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_lot_mass_balance
• Sources:

Primary and secondary packaging (packaging_materials)

Record each packaging material by mass, including liners, cartons, labels, and route-specific barrier packaging.

• Selected flow: Packaging material by material type; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: bill-of-material mass less measured unused return, normalized to packed net product
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_records
• Sources:
• Range: Provisional packaging-mass QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.001
  • Upper: 0.5
  • Unit: kg/kg net reference product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Storage electricity (storage_electricity)

Record electricity for route-appropriate on-site storage over the declared duration; cold storage is conditional on the frozen route.

• Selected flow: Electricity; Tiangong UUID pending review
• Flow property / unit: Energy / kWh
• Amount rule: metered or allocated storage electricity for declared throughput and duration
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net reference product over declared foreground storage
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_storage_refrigeration_records
• Sources:
• Range: Provisional storage-electricity QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kWh/kg net reference product
  • Basis: broad replaceable range over the declared foreground storage duration
  • Basis kind: Storage duration (storage_duration)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Packaged reference product (final_reference_product)

This is the quantitative reference output after excluding packaging and any non-sale free liquid or glaze from net product mass.

• Selected flow: Other crustaceans, frozen, dried, salted or in brine ecae55b8-a320-44e8-9ea2-98d7ff34e4e3
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: exactly 1 kg net reference product
• Value mode: Fixed value (fixed_value)
• Specificity: Not applicable (not_applicable)
• Normalization basis: reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Sources:

Waste flows

Packaging scrap (packaging_scrap)

Record measured foreground packing scrap by material and destination.

• Selected flow: Packaging waste by material type; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: packaging issued minus packaging incorporated and returned
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_records
• Sources:
• Range: Provisional packaging-scrap QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.1
  • Unit: kg/kg net reference product
  • Basis: broad replaceable candidate-stage screening range
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Direct refrigerant loss during frozen storage (storage_refrigerant_loss)

Include only for frozen-route storage within the foreground boundary.

• Selected flow: Refrigerant emission to air; Tiangong UUID pending review
• Flow property / unit: Mass / kg
• Amount rule: annual or event-based refrigerant loss allocated by frozen storage throughput and duration
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg frozen reference product over declared storage
• Basis kind: Storage duration (storage_duration)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_storage_refrigeration_records
• Sources:
• Range: Provisional storage-refrigerant QA range
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.1
  • Unit: kg/kg frozen reference product
  • Basis: broad replaceable candidate-stage screening range
  • 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_subdivision_first	shared_processes	Avoid allocation by separately metering route, product form, cooking, preparation, packing, and storage operations whenever technically feasible.	eu-pef-2021-2279
allocation_joint_outputs	marketable_co_products	When subdivision is not feasible, apply a documented physical relation that reflects the underlying process. If no defensible physical relation exists and economic allocation is used, record price basis, reference period, currency, route, and a sensitivity result.	eu-pef-2021-2279
allocation_residue_status	shells_rejects_and_liquids	Outputs sent to treatment remain wastes and receive treatment burdens without avoided-product credit unless a consequential study explicitly requires it. A sold or internally used material is a co-product and shall be included in the allocation decision.	eu-pef-2021-2279
allocation_route_separation	multi_route_facilities	Allocate shared utilities using measured drivers such as equipment meter, operating time, throughput, storage volume-time, or another documented causal driver before aggregating separately calculated route results.	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_lot_mass_balance	reception_and_preparation; declared_preservation; packing_and_storage	raw, intermediate, final, residue, and free-liquid masses	weigh tickets and batch records	lot_id; route; product_form; incoming_mass; prepared_mass; preserved_mass; packed_net_mass; glaze_mass; free_liquid_mass; residue_mass	calibrated scales and reconciled batch records	kg	each lot	representative production period, normally at least 12 months or disclosed shorter campaign	each reporting facility and route	sum by lot and route, then divide by eligible net reference-product mass	scale calibration, lot traceability, and signed mass-balance review
cp_water_ice_records	reception_and_preparation	water and ice	meters, invoices, and batch charge logs	meter_start; meter_end; ice_mass; allocation_driver; sanitation_share	direct measurement preferred; documented causal allocation otherwise	kg	each lot or meter period	same period as product data	each facility	subtract non-production use and allocate to route/product using documented driver	meter checks, invoices, and allocation worksheet
cp_route_input_records	declared_preservation	electricity, thermal energy, salt, and brining water	meters, fuel/steam records, and formulation sheets	route; equipment; electricity; fuel_or_heat; conversion_factor; salt_charge; fresh_water; recirculated_brine	route meter or batch formulation record	kWh; MJ; kg	each lot or meter period	same period as product data	each facility and preservation route	aggregate only within the declared route and normalize to preserved output	meter calibration, invoices, formulation approval, and unit-conversion record
cp_waste_effluent_records	reception_and_preparation; declared_preservation	residues, wastewater, spent brine, and treatment destination	scales, discharge meters, manifests, and balance calculations	stream_id; saline_status; mass_or_volume; density; treatment; sale_status; destination	direct measurement preferred; documented balance where unavailable	kg	each lot or reporting period	same period as product data	each facility and stream	keep treatment destinations and saline/non-saline streams separate	manifests, meter records, sampling plan, and balance reconciliation
cp_packaging_records	packing_and_storage	packaging incorporated and scrap	bill of materials, purchase records, and scrap weights	material; units_issued; unit_mass; returned_units; scrap_mass; packed_net_mass	specification mass verified by sample weighing	kg	packaging run	same period as product data	each product format and facility	calculate incorporated mass by material per net product mass	current specifications, sample weights, and stock reconciliation
cp_storage_refrigeration_records	declared_preservation; packing_and_storage	storage electricity, duration, and refrigerant loss	meters, warehouse logs, refrigerant service records	route; storage_temperature; entry_time; dispatch_time; electricity; refrigerant_type; charge_added; recovered_mass; throughput	meter and service-log calculation	kWh; h or day; kg	monthly and each service event	same period as product data	each facility	allocate by measured zone meter or documented mass-volume-time driver	meter record, temperature log, service invoice, and leak calculation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	all inventory rows	normalized amount = eligible lot or period amount / net kg of conforming reference product; exclude packaging, separately draining brine, and disclosed glaze from denominator	collected flow amount; packed net mass; glaze/free-liquid status	amount per 1 kg net reference product	eu-pef-2021-2279
calc_mass_balance	each production lot	reconcile received material, added water/ice/salt retained, intermediates, product, residues, discharged liquid, evaporated water, and documented unmeasured difference	cp_lot_mass_balance; cp_water_ice_records; cp_waste_effluent_records	lot mass-balance statement and yield	codex-cxc-52-2003
calc_route_separation	multi-route facilities	calculate each preservation route independently; aggregate only using measured net-product route shares for the declared reporting period	route inventory; route net output	explicitly weighted product mix	eu-pef-2021-2279
calc_shared_utilities	shared meters and storage	allocated utility = shared total × documented causal driver share; disclose driver and unallocated remainder	meter total; route operating time, throughput, or storage mass-volume-time	route-specific utility amount	eu-pef-2021-2279

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	reference product and raw material	Retain species/commercial group, origin, form, raw/cooked state, preservation route, lot, and dispatch condition; do not substitute shrimp/prawn or mollusc data without a disclosed proxy review.	classification record, supplier specification, lot traceability, and unsd-cpc-3-0-2025
dq_route_and_food_safety	preparation and preservation	Retain route-specific time-temperature, salting/brining or drying-control records and food-safety release evidence appropriate to the product; a failed or rejected lot is not conforming reference output.	HACCP or equivalent control records and codex-cxc-52-2003; fao-seafood-safety-quality-2003
dq_temporal_coverage	foreground activity data	Use a representative period covering seasonal and operational variability, normally 12 consecutive months; disclose a shorter seasonal campaign and justify representativeness.	dated meters, invoices, production logs, and eu-pef-2021-2279
dq_completeness	foreground inventory	Cover at least 95% of measured foreground input and output mass and all known environmentally relevant energy, refrigerant, saline-effluent, and waste streams; list exclusions and assess their significance.	mass balance, exclusion log, and eu-pef-2021-2279
dq_measurement	foreground records	Prefer calibrated measurement; document estimates, meter allocation, density conversions, missing-data treatment, and uncertainty.	calibration records, worksheets, and meter/invoice reconciliation
dq_provisional_ranges	reasoned_estimate ranges	Treat every provisional range as a screening flag, not a default publication value; replace it with foreground data or reviewed source evidence before activation unless methodology review explicitly accepts it.	review record and source replacement log

9. Validation Rules

rule_id	applies_to	rule	source_ids
validate_reference_flow	reference_product	Confirm exactly 1 kg net product uses product flow ecae55b8-a320-44e8-9ea2-98d7ff34e4e3, Mass 93a60a56-a3c8-11da-a746-0800200b9a66, unit group 93a60a57-a4c8-11da-a746-0800200c9a66, and kg.
validate_route_declaration	product_and_process_map	Confirm preservation route, raw/cooked state, form, glaze/moisture/salt/brine basis, dispatch temperature, and storage duration are declared; reject unconditional mixing of routes.	unsd-cpc-3-0-2025; codex-cxc-52-2003
validate_conditional_inputs	declared_preservation	Confirm freezing and frozen-storage records occur only for frozen product, thermal drying only when used, salt only when added, and brining water/spent brine only for the brined route.	codex-cxc-52-2003
validate_mass_balance	each lot	Confirm raw, intermediate, product, residue, retained water/salt, wastewater/free liquid, evaporation, and unmeasured loss are reconciled without counting packaging as product.	codex-cxc-52-2003
validate_allocation	co_products_and_shared_operations	Confirm subdivision was attempted first and every remaining allocation has a causal driver, co-product/waste decision, and sensitivity when economic allocation is used.	eu-pef-2021-2279
validate_food_safety_release	conforming_output	Confirm the lot has the route-specific acceptance and food-safety control evidence required for its declared market state; rejected product is recorded as waste or rework, not reference output.	codex-cxc-52-2003; fao-seafood-safety-quality-2003
validate_provisional_estimates	inventory_ranges	Flag every reasoned_estimate as unresolved for methodology review and confirm it is not represented as measured, source-backed, or mandatory.
validate_uuid_gaps	non_reference_flows	Confirm unresolved non-reference Tiangong UUIDs remain explicit review items and are not replaced by unverified approximate flows.

10. Published Dataset Profile

Field	Value
dataset_role	Facility-gate foreground production dataset for a declared preserved other-crustacean product
downstream_use	secondary_dataset; background_dataset
allowed_use	Product and facility comparisons only when route, species/group, product form, dispatch condition, geography, technology, allocation, and storage basis are sufficiently comparable; may be linked with separate upstream and downstream datasets
excluded_use	Unqualified average across frozen, dried, dry-salted, and brined routes; proxy for shrimp/prawn, mollusc, canned, smoked-only, fermented, fresh/chilled, harvest/aquaculture, distribution, retail, cooking, or consumption
required_metadata	PCR id; facility and geography; reporting period; species/commercial group and origin; product form; raw/cooked state; declared route; glaze, moisture, salt/brine and net-mass basis; technology; storage duration/temperature; packaging; allocation; upstream datasets; waste treatment; data owners and review state
required_quality_disclosure	Primary-data share and period; meter coverage and allocation drivers; mass-balance difference; route shares; missing data and proxies; reasoned estimates; non-reference UUID gaps; food-safety release basis; uncertainty and exclusions
update_trigger	Material change in species mix, raw-material origin, product form, preservation technology or route share, energy/refrigerant system, formulation, yield, packaging, storage, allocation, regulation/food-safety control, or data older than the organization’s review interval

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-3-0-2025	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0, structure and explanatory materials, https://unstats.un.org/unsd/classifications/Econ/cpc (retrieved 2026-08-11)	Classification scope and distinction of CPC 21259
codex-cxc-52-2003	standard	Codex Alimentarius, CXC 52-2003, Code of Practice for Fish and Fishery Products, official Codex text listing and current English text, https://www.fao.org/fao-who-codexalimentarius/codex-texts/codes-of-practice/en/ (retrieved 2026-08-11)	Facility process decomposition, water/ice and hygiene controls, preservation-route controls, temperature handling, rejection and food-safety validation
fao-seafood-safety-quality-2003	official_guidance	FAO Fisheries Technical Paper 444, Assessment and Management of Seafood Safety and Quality, ISBN 92-5-104954-8, https://www.fao.org/4/y4743e/y4743e00.htm (retrieved 2026-08-11)	Seafood hazard-control evidence for fresh/frozen crustaceans and dried, salted, or lightly preserved products; traceability and food-safety quality records
eu-pef-2021-2279	official_guidance	European Commission Recommendation (EU) 2021/2279 on the use of the Environmental Footprint methods, CELEX 32021H2279, https://eur-lex.europa.eu/eli/reco/2021/2279/oj/eng (retrieved 2026-08-11)	System boundary completeness, foreground data quality, subdivision and allocation hierarchy, temporal representativeness, and transparent aggregation