Parts of milking and dairy machines, n.e.c.

1. Scope and Applicability

This rule covers manufacture through factory acceptance of a separately supplied, identifiable part intended for a milking or dairy machine. Declare the part number, host machine, material grade, production route, and milk-contact status. Do not average unlike part configurations. Complete milking machines and dairy machines are outside this PCR. Packaging, distribution, installation, use, maintenance, and end-of-life are outside the factory-gate result unless separately modelled. UN CPC 3.0 distinguishes parts in 44139 from complete machines in 44131 and 44132 (un-cpc-3-2025). A manufacturer leaflet identifies steel and NBR dairy-machine components, but does not establish a transferable manufacturing route or amount (alfalaval-h20-separator).

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.special-purpose-machinery.parts-of-milking-and-dairy-machines-n-e-c
classification_refs	CPC 3.0:44139; classification context only (un-cpc-3-2025)
covered_products	Accepted, separately supplied milking-machine or dairy-machine parts, one declared part configuration per dataset.
excluded_products	Complete machines, generic unassigned material stock, hygiene consumables, and replacement services.
representative_product	One accepted milk-contact machine part of a declared steel or elastomer configuration.
production_route	Declare actual metal stock fabrication or elastomer forming; record any other actual route as specific exchanges.
market_state	Accepted finished part at the manufacturer's gate, net of transport packaging.

3. Reference Flow

Field	Value
What	An accepted finished part for an identified milking or dairy machine.
How much	1 kg accepted net finished part mass.
How well	Part number, material grade, host-machine compatibility, acceptance status, and milk-contact status declared.
How long or cycle	One accepted production lot; no assumed service life.
reference_flow_link	finished_part_output

Field	Value
Reference amount	1
Reference product flow	Parts of milking and dairy machines, n.e.c. 0ea78094-45f3-4068-9e30-73c26232c351
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	part number; host machine and function; material grade; manufacturing route; milk-contact status; acceptance lot; accepted net mass; geography and reporting period

Declare these qualifiers in dataset metadata, process notes, or the reference-flow comment. The same accepted lot and net mass are the denominator for all inventory rows.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	finished_part_output	Mass	kg	Weigh accepted finished parts for the declared lot using a calibrated scale, excluding transport packaging and rejected parts; use cp_finished_mass. Measured accepted net mass is the denominator for per-kg inventory.
electricity_unit	electricity_input	Electrical energy	kWh	Retain metered electrical energy in kWh; divide electrical MJ by 3.6 if conversion is necessary. Net calorific value is not electrical energy.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased, grade-identified material enters the part manufacturer's foreground boundary.
starting_condition_role	Material input at factory receipt; supplier production belongs to linked upstream datasets.
product_classification_scope	Separately supplied parts under the semantic 44139 boundary, with one identified configuration per dataset.
recursive_input_rule	Record a purchased 44139 part once and link its upstream dataset; do not reproduce the supplier's inventory in this foreground process.
upstream_dataset_requirement	Link grade-, geography-, and technology-appropriate upstream datasets for purchased materials and energy.
disclosure	Declare part identity, route, included operations, purchased-input boundary, site, period, meter allocation, and excluded downstream stages.

rule_id	applies_to	rule	source_ids
boundary_part_identity	reference product	Use accepted separately supplied parts; complete machines and unassigned stock are outside the product boundary.	un-cpc-3-2025
boundary_actual_operations	manufacturing	Record actual fabrication, forming, assembly, finishing, cleaning, inspection, and rejects as specific exchanges; omit absent operations.	alfalaval-h20-separator
boundary_upstream	purchased inputs	Link purchased material and energy upstream without double-counting supplier production in the foreground.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
part_manufacture	Part fabrication and acceptance	required	Every accepted lot; apply material rows only for the declared route.	Foreground production and acceptance	1 kg accepted net finished part

Process: Part fabrication and acceptance (part_manufacture)

These rows specify steel-plate and NBR-compound routes plus a shared electricity input. Record every other actual material, utility, direct emission, and waste as a separate atomic exchange in the foreground package. Do not substitute another material into a listed row.

Inputs

Product flows

Alloy steel plate input (steel_plate_input)

Include only for a part fabricated from alloy steel plate. Record actual alloy grade and weighed amount; the public flow name is generic and the grade is a dataset qualifier.

• Selected flow: Steel Plate 421db3a5-394d-410b-8ebf-af23a37fc878
• Flow property / unit: Mass / kg
• Amount rule: net issued kg of alloy steel plate for the declared lot divided by accepted net finished kg.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_steel_input
• Sources: alfalaval-h20-separator

Raw nitrile-butadiene rubber compound input (nbr_compound_input)

Include only if an uncured NBR compound is formed into the part. The UUID is unresolved: a vulcanized finished article is not the raw compound.

• Selected flow: Uncured nitrile-butadiene rubber compound
• Flow property / unit: Mass / kg
• Amount rule: net charged kg of uncured NBR compound for the declared lot divided by accepted net finished kg.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_nbr_input
• Sources: alfalaval-h20-separator

Purchased alternating-current electricity input (electricity_input)

Use the measured electricity attributable to the declared lot. The UUID is unresolved because searched public candidates do not represent metered kWh.

• Selected flow: Purchased grid alternating-current electricity
• Flow property / unit: Electrical energy / kWh
• Amount rule: attributable metered kWh divided by accepted net finished kg.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_electricity
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Accepted finished part (finished_part_output)

Report accepted net part mass, excluding rejects and transport packaging. Part metadata constrains the broad reference-product identity.

• Selected flow: Parts of milking and dairy machines, n.e.c. 0ea78094-45f3-4068-9e30-73c26232c351
• Flow property / unit: Mass / kg
• Amount rule: 1 kg
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finished_mass
• Sources: un-cpc-3-2025

Waste flows

New steel scrap output (new_steel_scrap_output)

Include only when fresh ferrous scrap leaves a steel-processing route. Keep the gross measured waste amount separate from any recycling credit.

• Selected flow: New steel scrap bc4cdf13-d9bb-4ea1-a8ad-398f13fcfcaa
• Flow property / unit: Mass / kg
• Amount rule: weighed new steel scrap attributable to the lot divided by accepted net finished kg.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_steel_scrap
• Sources:

Elementary flows

7. Allocation and Co-product Handling

rule_id	applies_to	rule	source_ids
allocation_subdivide	shared manufacturing	Prefer separate lot, material-issue, and submeter records for the declared part configuration.
allocation_shared_meter	shared electricity	If submetering is unavailable, allocate measured electricity by documented operating time and rated or measured power for the same period; disclose residual unallocated use.
allocation_scrap	steel scrap	Record gross new steel scrap and its disposition separately; do not silently net an avoided-burden recycling credit.

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_finished_mass	part_manufacture	accepted part output	calibrated scale and acceptance record	part number; lot; accepted count; accepted net mass; rejected mass; scale ID	Weigh accepted parts without packaging and reconcile to acceptance records.	kg	each lot	reporting period	manufacturing site	accepted net kg per lot; denominator for every row	calibration and acceptance ledger
cp_steel_input	part_manufacture	alloy steel plate input	material issue and weigh record	alloy grade; supplier; lot; issued mass; returns	Reconcile issued plate mass and stock returns with the declared lot.	kg	each lot	reporting period	manufacturing site	per 1 kg reference flow	material ledger and grade certificate
cp_nbr_input	part_manufacture	uncured NBR input	batch charge record	compound grade; batch; charged mass; returns	Weigh compound charges and reconcile returns.	kg	each batch	reporting period	manufacturing site	per 1 kg reference flow	batch sheet and scale record
cp_electricity	part_manufacture	purchased electricity	meter and allocation record	metered kWh; machine hours; power basis; lot	Read meter and attribute shared use by recorded time and power.	kWh	each lot or meter period	reporting period	manufacturing site	per 1 kg reference flow	meter and allocation worksheet
cp_steel_scrap	part_manufacture	new steel scrap	scrap weigh ticket	lot; scrap type; gross mass; destination	Weigh fresh ferrous scrap separately from old or mixed scrap.	kg	each lot	reporting period	manufacturing site	per 1 kg reference flow	weigh ticket and disposition record

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize_lot_mass	steel_plate_input, nbr_compound_input, electricity_input, new_steel_scrap_output	q_ref = q_lot / m_accepted; q_lot is the attributable lot exchange; m_accepted is the accepted net finished mass in kg from cp_finished_mass.	q_lot; m_accepted; cp_finished_mass; row collection protocol	q_ref per 1 kg reference flow
accepted_output	finished_part_output	m_accepted / m_accepted = 1 kg accepted output per 1 kg reference flow; m_accepted must be positive.	m_accepted; cp_finished_mass	1 kg reference product

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	reference product and materials	Trace part number, host machine, material grade, and milk-contact status to one acceptance lot.	drawing, bill of materials, grade certificate, acceptance record
dq_completeness	all actual operations	Add specific atomic rows for every actual material, utility, direct emission, and waste not represented above; record zero only when absence is demonstrated.	reconciled material, meter, and waste ledgers
dq_period	all foreground rows	Use one site and period; disclose allocation across lots and missing records.	reporting-period ledger and allocation worksheet

9. Validation Rules

rule_id	applies_to	rule	source_ids
validate_identity	reference product	Reject a package missing part number, host-machine compatibility, material grade, route, milk-contact status, or accepted lot.	un-cpc-3-2025
validate_mass_basis	inventory	Require positive accepted net mass and the same accepted-lot denominator for every row; reconcile material, product, reject, and waste masses.
validate_flow_identity	inventory	Use only exact public flow identities; keep unresolved rows unlinked until product state, classification, property, and unit are verified.
validate_route	conditional material rows	Apply steel plate and fresh steel scrap only to the steel route, NBR compound only to its forming route, and add other actual exchanges atomically.	alfalaval-h20-separator

10. Published Dataset Profile

Field	Value
dataset_role	foreground part-manufacturing dataset eligible for later secondary_dataset or background_dataset review
downstream_use	process or lifecyclemodel projection for the declared part configuration
allowed_use	one identified part configuration and compatible host-machine application
excluded_use	average of unlike part families, complete-machine operation, or unspecified material route
required_metadata	part number; host machine; route; material grades; milk-contact status; site and period; accepted net mass; allocation; waste disposition
required_quality_disclosure	primary-record coverage, meter allocation, unresolved UUIDs, omitted operations, data gaps, and linked upstream datasets
update_trigger	material, design, route, site, meter allocation, or upstream supplier change

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-2025	official_guidance	UN Statistics Division, CPC Ver. 3.0 Explanatory Notes, 30 June 2025, section 4413, p. 229. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf	product boundary
alfalaval-h20-separator	handbook	Alfa Laval, H20 Disc stack separator for the dairy industry, publication code 200002019-1-EN-GB, pp. 1–2. https://www.alfalaval.com/globalassets/documents/products/separation/centrifugal-separators/separators/dairy/product_leaflet_h20_separator_en.pdf	example dairy-machine steel and NBR components; no manufacturing quantity transfer