Non-electric domestic iron or steel cooking appliances and plate warmers

1. Scope and Applicability

This rule produces a factory-gate foreground data package for one accepted, complete, non-electric domestic cooking appliance or plate warmer whose principal body is iron or steel. Gas-fired domestic hobs and cookers are representative routes; the declared configuration may instead be another non-electric cooking or warming design. Record its fuel, burner or heater design, material bill, surface finish and sale state. Manufacture of loose replacement parts, electric appliances, copper-bodied appliances, use-stage cooking fuel and end-of-life treatment are outside this factory-gate package. The category distinction follows un-cpc-3-2025; product-specific bill-of-material collection follows eu-jrc-cooking-appliances-2020.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.special-purpose-machinery.cooking-appliances-and-plate-warmers-non-electric-domestic-of-iron-or-steel
classification_refs	CPC 3.0 44821, classification context only; no accepted mapping is asserted
covered_products	Complete non-electric domestic iron or steel cooking appliances and plate warmers, including gas-fired domestic hobs and cookers
excluded_products	Electric cooking appliances; non-cooking space heaters of CPC 44822; separately sold parts of CPC 44832; copper-bodied cooking or heating appliances of CPC 42912; commercial cooking equipment
representative_product	Accepted, complete iron or steel domestic gas hob with installed burner and controls
production_route	Steel housing fabrication, route-specific surface finishing, purchased functional component assembly, acceptance testing and factory-gate packaging
market_state	Finished and accepted appliance at factory gate, with declared sales packaging; transport packaging is excluded from net product mass

3. Reference Flow

Field	Value
What	A complete domestic appliance that cooks food or warms plates without electric heat
How much	One accepted finished appliance of the declared model and configuration
How well	Meets the manufacturer's declared cooking or warming performance and applicable acceptance test; fuel and installed components are identified
How long or cycle	At factory acceptance; no assumed service life or cooking cycle is embedded in this production reference
reference_flow_link	finished_appliance

Field	Value
Reference amount	M
Reference product flow	Cooking appliances and plate warmers, non-electric, domestic, of iron or steel 6cc6000a-58ba-4ba3-bfa1-94ee239070ff
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	model; configuration; fuel or heat source; iron or steel body grade; installed burner or warming assembly; coating route; sales packaging state; manufacturing site and period

The foreground producer measures M for the same accepted configuration. Inventory is collected per one accepted finished unit and delivered with M kg as the reference product; no universal appliance mass is assumed.

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	M = accepted net mass of one complete unit of the same configuration in kg; collect using cp_mass.
electricity_energy	fabrication_electricity	Net calorific value	MJ	Record alternating-current electricity consumed by the declared fabrication and assembly processes in MJ; convert a metered kWh record using 1 kWh = 3.6 MJ, and retain the original reading.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Iron or steel sheet and purchased burner components enter the foreground factory; their upstream production is linked as separate background datasets
starting_condition_role	Purchased product inputs at the gate of the first included factory process
product_classification_scope	Finished CPC 44821 appliance; separately supplied CPC 44832 parts remain input components
recursive_input_rule	If a complete same-category appliance is purchased as an input, disclose and link its upstream dataset rather than recursively modelling it as fresh factory output
upstream_dataset_requirement	Link upstream datasets for purchased metal, functional components, coating material, gas, electricity and packaging, with geography and technology recorded
disclosure	Declare site, period, model, configuration, fuel, process route, purchased-versus-in-house components, mass M and all exclusions

rule_id	applies_to	rule	source_ids
boundary_gate	factory-gate foreground package	Include fabrication, route-specific finishing, final assembly, acceptance testing, attributable factory energy, scrap and packaging up to release of the accepted appliance.	eu-jrc-cooking-appliances-2020; us-epa-metal-fabrication-2007
boundary_exclusions	downstream stages	Exclude customer cooking fuel, distribution, installation and end-of-life from this factory-gate inventory; disclose any separately modelled downstream scenarios.	eu-jrc-cooking-appliances-2020

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
housing_fabrication	Steel housing fabrication	conditional	Include when sheet-metal housing cutting and forming occur at the declared factory	Foreground cutting, forming and joining	per one accepted finished unit
surface_coating	Powder coating	conditional	Include when powder coating is applied to the housing at the declared factory	Foreground finishing	per one accepted finished unit
final_assembly_test	Final assembly and acceptance test	required	Every accepted complete appliance is assembled and tested	Foreground assembly and test	per one accepted finished unit
sales_packaging	Corrugated-box packaging	conditional	Include when a corrugated board box is supplied with the factory-gate sale unit	Foreground packaging	per one accepted finished unit

Process: Steel housing fabrication (housing_fabrication)

Inputs

Product flows

Cold-rolled steel sheet for housing (steel_sheet_input)

For the sheet-fabrication route, record the mass of non-alloy cold-rolled steel sheet entering the housing line, including sheet that becomes measured offcut. Supplier grade and coating state must be declared; its Tiangong flow identity remains unresolved.

• Selected flow: Cold-rolled non-alloy steel sheet
• Flow property / unit: Mass / kg
• Amount rule: Measured sheet issued per one accepted finished unit; record supplier mass and reconcile stock changes.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_materials
• Sources: eu-jrc-cooking-appliances-2020; us-epa-metal-fabrication-2007

Alternating-current fabrication electricity (fabrication_electricity)

Meter or allocate the electricity used by cutting, forming, joining and installed finishing and assembly equipment; avoid double counting shared meters.

• Selected flow: Alternating current 949661a5-2af6-4e66-adf8-74f5fca306a9
• Flow property / unit: Net calorific value / MJ
• Amount rule: Measured attributable alternating-current electricity in MJ per one accepted finished unit; convert recorded kWh using electricity_energy.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_electricity
• Sources: us-epa-metal-fabrication-2007

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Steel sheet offcut scrap (steel_scrap_output)

Weigh clean steel offcuts leaving the fabrication line. Record contaminated swarf separately in the produced dataset if present; the selected flow here is only steel scrap.

• Selected flow: Steel scrap 37997e0e-e34b-4ab9-a642-5d86f4333919
• Flow property / unit: Mass / kg
• Amount rule: Measured steel scrap dispatched or stock-adjusted per one accepted finished unit.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_scrap
• Sources: us-epa-metal-fabrication-2007

Elementary flows

Process: Powder coating (surface_coating)

Inputs

Product flows

Powder paint applied to housing (powder_coating_input)

Include only when the declared factory uses powder paint; record purchased and consumed coating powder, with losses assigned to this line.

• Selected flow: Powder Coating 6e3010f9-fbd3-48f6-95fc-c1b38d2800d2
• Flow property / unit: Mass / kg
• Amount rule: Measured powder paint consumed per one accepted finished unit when powder coating is used.
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_coating
• Sources: us-epa-metal-fabrication-2007

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Process: Final assembly and acceptance test (final_assembly_test)

Inputs

Product flows

Purchased domestic gas burner assembly (domestic_gas_burner_input)

Include for a gas-fired configuration with a purchased domestic hob burner assembly; record its supplier identity and delivered mass. The searched industrial burner records are not this product.

• Selected flow: Domestic gas hob burner assembly
• Flow property / unit: Mass / kg
• Amount rule: Measured mass of purchased domestic burner assemblies per one accepted gas-fired finished unit.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_components
• Sources: eu-jrc-cooking-appliances-2020

Natural gas for gas-fired acceptance test (acceptance_test_natural_gas)

Include only when natural gas is actually burned during the factory acceptance test; use a separate atomic fuel row in the produced dataset for any other test fuel.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume / m3
• Amount rule: Metered natural gas consumed in acceptance testing per one accepted finished unit when this fuel is used.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_test_gas
• Sources: eu-jrc-cooking-appliances-2020

Waste flows

Elementary flows

Outputs

Product flows

Accepted finished cooking appliance or plate warmer (finished_appliance)

The reference product is one accepted complete unit. Its net mass M excludes the transport package and is weighed for the same configuration.

• Selected flow: Cooking appliances and plate warmers, non-electric, domestic, of iron or steel 6cc6000a-58ba-4ba3-bfa1-94ee239070ff
• Flow property / unit: Mass / kg
• Amount rule: M kg
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_mass
• Sources: un-cpc-3-2025; eu-jrc-cooking-appliances-2020

Waste flows

Elementary flows

Process: Corrugated-box packaging (sales_packaging)

Inputs

Product flows

Corrugated board sale box (corrugated_box_input)

Include only when a corrugated board sale box accompanies the accepted appliance at the declared factory gate. This box is outside the measured net product mass M.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: Measured mass of corrugated sale boxes issued per one accepted finished unit when boxed.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per one accepted finished unit
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging
• Sources: eu-jrc-cooking-appliances-2020

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	applies_to	rule	source_ids
allocation_subdivide	shared factory processes	First separate metered process lines, production periods and product configurations; retain directly traceable sheet, scrap, coating, burner, test gas and box records.	us-epa-metal-fabrication-2007; eu-jrc-cooking-appliances-2020
allocation_shared	remaining shared energy and waste	If direct measurement cannot separate a shared process, allocate by a documented physical driver tied to that process, such as measured machine time; disclose the driver, denominator and sensitivity.	us-epa-metal-fabrication-2007
scrap_no_credit	steel scrap output	Record steel scrap as an output; do not subtract an assumed recycling credit inside the factory-gate foreground inventory.	us-epa-metal-fabrication-2007

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_mass	final_assembly_test	accepted reference product	calibrated scale record	model; configuration; serial number; accepted net mass M	Weigh the accepted complete unit on a calibrated scale, excluding transport packaging; reconcile the same configuration and acceptance record.	kg	each accepted model or production lot	declared production period	declared factory	accepted net mass per unit	calibration certificate; acceptance record
cp_materials	housing_fabrication	steel sheet input	supplier and issue ledger	steel grade; sheet form; received mass; issued mass; opening and closing stock; accepted units	Reconcile supplier and issue records with stock change for the declared configuration.	kg	each lot	declared production period	housing line	issued sheet mass / accepted units	supplier invoice; stock ledger
cp_electricity	housing_fabrication	alternating-current input	meter record	meter id; kWh reading; period; line allocation driver; accepted units	Read the calibrated meter and convert kWh to MJ; document allocation of shared electricity.	MJ	monthly or batch	declared production period	included factory lines	attributable MJ / accepted units	meter readings; allocation worksheet
cp_scrap	housing_fabrication	steel offcut output	weighbridge and stock record	scrap type; dispatched mass; opening and closing stock; accepted units	Weigh clean steel offcuts and reconcile stock change.	kg	each dispatch or batch	declared production period	housing line	steel scrap mass / accepted units	weighbridge ticket; stock ledger
cp_coating	surface_coating	powder paint input	coating issue record	powder type; issued mass; returned mass; accepted units	Reconcile powder issues and returns when this route is used.	kg	each batch	declared production period	coating line	consumed powder mass / accepted units	issue ledger; route record
cp_components	final_assembly_test	burner assembly input	supplier BoM and receipt	burner model; supplier; receipt mass; installed count; accepted units	Reconcile received domestic burner assemblies with installed components and rejected units.	kg	each model or lot	declared production period	assembly line	installed burner mass / accepted units	supplier BoM; receipt; assembly traveler
cp_test_gas	final_assembly_test	natural gas test input	gas meter and test record	gas meter id; m3 reading; gas type; test duration; accepted units	Meter natural gas attributable to acceptance tests for the declared gas configuration.	m3	each test batch	declared production period	test line	attributable natural gas m3 / accepted units	gas meter record; test log
cp_packaging	sales_packaging	corrugated sale box input	packaging issue record	box specification; issued mass; accepted units	Reconcile corrugated boxes issued to accepted units when boxed.	kg	each lot	declared production period	packing line	issued box mass / accepted units	packaging ledger; supplier specification

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_configuration	all included rows	Keep model, fuel, coating route and accepted configuration consistent with M and the bill of materials.	eu-jrc-cooking-appliances-2020; acceptance and supplier records
dq_period	all collected rows	Use one declared production period; reconcile shared meter and stock boundaries to accepted output.	meter, ledger and acceptance dates
dq_identity	unresolved UUID rows	Preserve the concrete physical name and leave UUID blank until an exact public TianGong flow is verified.	flow identity review

9. Validation Rules

rule_id	applies_to	rule	source_ids
validate_mass	reference and material balance	Confirm M is measured for the accepted configuration and the finished output equals M kg; reconcile sheet issued, component mass, scrap and stock movements without forcing equality across unlike materials.	eu-jrc-cooking-appliances-2020; us-epa-metal-fabrication-2007
validate_routes	conditional process rows	Confirm powder paint, domestic burner, natural gas and corrugated box are included only when their declared routes apply; require an explicit absence reason otherwise.	eu-jrc-cooking-appliances-2020
validate_sources	foreground data package	Require meter, supplier, weighbridge, BoM and acceptance records for nonzero rows; disclose geography, technology, time and unresolved UUIDs.	eu-jrc-cooking-appliances-2020; us-epa-metal-fabrication-2007

10. Published Dataset Profile

Field	Value
dataset_role	Factory-gate foreground data package for an accepted complete appliance
downstream_use	May become a reviewed secondary_dataset or background_dataset and support process or lifecyclemodel projections
allowed_use	Use for the declared model, site, period, fuel and finish route, with upstream links and disclosed UUID gaps
excluded_use	Do not treat this production package as a use-stage cooking or end-of-life result; do not transfer it to electric, copper-bodied or industrial equipment
required_metadata	model; configuration; fuel; iron or steel grade; site; period; M and measurement evidence; BoM; process routes; packaging state; upstream dataset geography
required_quality_disclosure	direct measurements; allocation drivers; excluded stages; unmatched flow UUIDs; unresolved range evidence; data coverage
update_trigger	Reissue when material design, burner, fuel, coating route, supplier, site or measurement protocol changes materially

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-2025	official_guidance	CPC Version 3.0 Structure, United Nations Statistics Division, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv	Product class and adjacent exclusions only
eu-jrc-cooking-appliances-2020	official_guidance	Review study of Ecodesign and Energy Labelling for Cooking appliances, first draft, February 2020, https://susproc.jrc.ec.europa.eu/product-bureau/sites/default/files/2020-07/CA_%20Prep%20Study_draft1_Feb2020.pdf	Domestic gas appliance scope; product-specific BoM and component collection; no empirical PCR range
us-epa-metal-fabrication-2007	official_guidance	Clean Lines: Strategies for Reducing Your Environmental Footprint, U.S. Environmental Protection Agency, November 2007, https://www.epa.gov/sites/default/files/2015-03/documents/fabrication.pdf	Fabrication process map, steel scrap and machining-fluid separation