Dry-process wood medium-density fibreboard manufacture

Lifecycle status: Candidate
Content maturity: Authored methodology
Current version: 0.1.0Last updated2026-10-13
Readiness: Review required

Methodology and translation states come from the source record; publishing this website does not change their review status.

Content languages

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Status, classification and source details

Readiness

Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.

Classification mapping

CPC 3.0:31441 · narrower

Source

library/pcrs/other-transportable-goods-except-metal-products-machinery-and-equipment/products-of-wood-cork-straw-and-plaiting-materials/medium-density-fibreboard-mdfsha256:51f958817398…

1. Scope and Applicability

Applies to conventional uncoated MDF made by dry forming wood fibres with the actual adhesive system, hot curing, cooling, sanding and trimming. Furnish may be traceable softwood or hardwood residues or whole logs. Dry process describes the forming route and medium; it does not mean steam-free or water-free production. Wet-process hardboard uses aqueous forming and dewatering, sometimes relying on lignin self-bonding, and requires a different methodology. Excluded are other high-density hardboards, wet low-density fibreboards, particleboard, OSB, nonwood fibreboards, veneered/coated boards and recipes requiring dedicated fire-retardant or preservative chemicals. Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021.

Wood provenance, species mix, density, thickness, moisture, declared formaldehyde class, binder composition and market requirements need dataset-specific evidence. No universal recipe, density cutoff, statutory formaldehyde limit or service life is prescribed. Product certification does not replace manufacturing stack-emission data.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.other-transportable-goods-except-metal-products-machinery-and-equipment.products-of-wood-cork-straw-and-plaiting-materials.medium-density-fibreboard-mdf
classification_refs	CPC 3.0 31441; narrower; scope and accepted decisions: `classifications/mappings/cpc-3.0-to-pcr.yaml` and its referenced ADRs
covered_products	Conventional dry-process uncoated wood MDF
excluded_products	Wet hardboard; other fibreboards; nonwood fibreboard; particleboard; OSB; coated board; special fire-retardant/preservative recipes
representative_product	Medium density fiberboard `57c184ac-a2d3-4500-af7b-80609ed89d2f`
production_route	Steam digestion/refining; binder dosing at actual location; fibre drying; dry forming/prepress; hot press; cooling; sanding/trimming/packaging
market_state	Uncoated cooled accepted MDF at mill gate; packaging excluded from reference mass

3. Reference Flow

Field	Value
What	Accepted dry-process wood MDF at mill gate
How much	1 kg net finished board, including moisture at the declared delivery condition
How well	Declare actual density, thickness, mechanical grade and formaldehyde test method/class with applicable evidence
How long or cycle	One manufacturing delivery; no assumed use life
reference_flow_link	`mdf_output`

Field	Value
Reference amount	1
Reference product flow	Medium density fiberboard `57c184ac-a2d3-4500-af7b-80609ed89d2f`
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	Wood provenance and species mix; dry route; adhesive type/solids/addition point; delivery moisture and dry/wet basis; measured density and volume condition; thickness/tolerance; uncoated state; formaldehyde claim and test method/date/class basis; delivery location/year; steam/indirect-heat measurement boundary; packaging exclusion; accepted-output and recirculation/waste fates

Required qualifiers must appear in metadata, process notes, reference-flow comments or equivalent fields; missing qualifiers leave the reference definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
`reference_mass`	reference product	Mass `93a60a56-a3c8-11da-a746-0800200b9a66`	kg	Use cp_output to weigh accepted net MDF at the same declared state, excluding packaging. All rows are per 1 kg reference flow; wet furnish, dry wood mass and unsanded rough panels are not the denominator.
`moisture_basis`	furnish_chips, furnish_sawdust, furnish_shavings, mdf_output	Auxiliary wet/oven-dry Mass; each exchange retains its verified native reference property	kg for auxiliary solids/water ledgers and mass-reference exchanges; m3 for native furnish_chips exchange	Use cp_furnish and cp_output to retain auxiliary wet mass, oven-dry solids and water separately; dry-basis moisture u is water/dry mass and wet-basis moisture w is water/wet mass, both as fractions. These auxiliary kg measurements do not replace furnish_chips verified Volume/m3 exchange or normalized numerator. Convert its auxiliary kg ledger only with measured same-lot/moisture/material-state density; volume_basis and volume_conversion separately require the actual supplier solid/bulk volume definition, Vs/Vb/k and loss/gate correspondence, with unknown links unresolved.
`volume_basis`	furnish_chips, dryer_gas, control_gas, boiler_gas	Volume	m3	Volume/m3 identity defines neither solid/bulk wood volume nor gas state. cp_furnish obtains supplier actual reference A, volume definition, same-lot/moisture Vs/Vb and measured k with loss/gate conversion. The applicable cp_energy or cp_energy_utilities record obtains gas T/P, dry-wet composition, Z and background-m3 reference conditions. Any unproven correspondence remains quantity compatibility pending.
`electricity_conversion`	line_electricity, boiler_electricity	Energy	MJ	Convert metered kWh to MJ by multiplying by 3.6. The electricity dataset net-calorific-value property represents electric energy bookkeeping and proves no steam/process-heat net-heat basis.
`thermal_basis`	line_steam, line_heat, boiler_steam, boiler_heat, condensate_return, boiler_condensate	Steam mass; delivered heat	kg; MJ	The applicable cp_thermal or cp_thermal_utilities record retains steam mass, condensation/return mass, temperature/pressure/quality and enthalpy boundary. Populate heat MJ only when supplier/background definition agrees with site supply-return enthalpy balance; property or product name alone is insufficient and unknown basis remains unresolved.
`nox_mass_basis`	dryer_nox, handling_nox, boiler_nox	Mass	kg	NOx kg requires a demonstrated common monitoring/LCI/LCIA-mapping mass basis and NO/NO2 boundary, excluding N2O and speciated duplicates; otherwise quantity compatibility pending.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Furnish/chemicals/energy delivered to mill; on-site line to accepted uncoated MDF at mill gate; link upstream production/inbound transport and actual waste treatment separately
starting_condition_role	foreground production
product_classification_scope	Conventional dry-process uncoated wood subset of CPC 3.0 31441
recursive_input_rule	Record recycled MDF state, resin composition, provenance and actual mass without adding another finished output. Internal recirculation retains equal physical links; purchased recovered board carries supplier upstream boundary
upstream_dataset_requirement	Bind each actual furnish, resin, energy, transport and treatment to location/year/route-compatible background data; residues are not assumed burden-free
disclosure	Declare survey period, plant and output, stage coverage, on-site/purchased energy, controls, stock changes, exclusions, assumptions and actual use/disposal

rule_id	applies_to	rule	source_ids
boundary_stages	mdf-line	Include receipt, size preparation, digestion/refining, actual resin dosing, drying, forming/prepress, hot pressing, cooling, sanding/trimming and packaging; measure each stage even within one aggregated process.	`corrim-mdf-2024`; `epa-mdf-2002`; `usda-wood-handbook-2021`
boundary_energy	mdf-line; utilities	Choose on-site utility generation or purchased carrier for each supply share. Link equal carrier quantities at both internal ends and cancel internal transfers when aggregating; do not add purchased heat burdens to the same on-site fuels. Direct dryer/oxidizer/mobile combustion and boiler stacks remain distinct.	`corrim-mdf-2024`; `epa-mdf-2002`; `epa-wood-boiler-2022`
boundary_upstream	all inventory rows	Include actual upstream manufacture and inbound transport and disclose residue allocation/recovery boundary. End at the uncoated mill gate; downstream use, service life and disposal are separate scenarios, never copied from CORRIM cradle-to-grave averages.	`corrim-mdf-2024`
boundary_coverage	all inventory rows	Conditional rows are included only with actual activity/composition evidence. Missing UUID or amount is not zero and blocks complete use of the affected route. Expand every additional actual chemical, fuel, packaging or treatment exchange as its own atomic row; never conceal it in a collection label.	`corrim-mdf-2024`; `epa-mdf-2002`; `usda-wood-handbook-2021`

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
`mdf-line`	Aggregated MDF manufacturing line	required	In-scope production	foreground production	1 kg accepted net MDF
`utilities`	On-site utilities	conditional	On-site boiler supplies MDF steam/heat; purchased shares exclude the same generation burdens	utility generation	per 1 kg reference flow

The following physical stage ledger stays within one foreground unit; it is not repeated finished-product trading. Retain physical mass/water/carbon balances separately from allocated environmental-burden accounts, with equal quantities at both ends of state transfers and recirculation. Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021.

stage_id	entering state	leaving state	separate collection
receipt	Wet chips, sawdust, dry shavings or logs; separate species/moisture/bark states	Screened/chipped furnish; bark separately routed	Lot net mass, volume, moisture, stocks
refining	Steam-softened wet furnish	Unresinated wet fibres/bundles; if resin is added in refiner record actual point	Electricity, steam mass, condensation, fibre solids/water
blend-dry	Wet fibres, with resin status determined by blowline or post-drying dosing route	Loose dried resinated fibres at measured moisture; water vapour and controlled gas	Each resin/wax/hardener, carrier water, dryer fuel, stack species
form-press	Loose resinated fibres; uncured formed mat	Cured hot unsanded rough panel; pressing/cooling exhaust	Mat mass/water, prepress recirculation, heat, rough-panel mass, press species
finish-pack	Cooled cured rough panel	Sanded/trimmed accepted MDF; resin-bearing dust/offcuts; separate packaging	Accepted net mass, thickness/density/moisture, captured dust/uncollected PM, packaging

Recovered fibres, mat trim and cured sanding dust are different material states. Record each origin/destination, dry solids, water and resin separately for rerefining, reforming, combustion or disposal. Refining creates fibres; OSB strands and particleboard particles are not fibre intermediates.

Process: MDF manufacturing line (`mdf-line`)

Inputs

Product flows

Purchased wood chips (`furnish_chips`)

Record untreated chips delivered for fibre preparation; measure volume, wet mass, species and moisture for the same lot. Identity is retained but quantity compatibility is pending. Obtain the supplier/background process actual reference quantity A (m3), its solid-wood or loose/compacted bulk-volume definition and measurement gate. Measure solid volume Vs and bulk volume Vb on the same representative lot and moisture/material state, with packing fraction k = Vs/Vb and a documented sampling/displacement/geometric method. Reconcile delivery gates, stock changes and measured losses; neither the flow name nor Volume/m3 defines the required volume basis. If A, volume definition, k or state/gate conversion is unknown, the upstream link remains incomplete.

Selected flow: Wood Chip 3fa2a6a7-224c-4d99-bd55-a214f0a83161
Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66; unit group 93a60a57-a3c8-12da-a746-0800200c9a66 / m3
Amount rule: Collect this actual exchange using cp_furnish and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_furnish
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Purchased green sawdust (`furnish_sawdust`)

Use only untreated sawdust entering refining; record its moisture and supplier coproduct boundary.

Selected flow: Untreated green wood sawdust for MDF refining
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_furnish and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_furnish
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Purchased dry shavings (`furnish_shavings`)

Record untreated dry shavings as a separate feedstock; do not substitute OSB strands or particleboard furnish.

Selected flow: Untreated dry wood shavings for MDF refining
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_furnish and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_furnish
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Coniferous pulpwood roundwood (`furnish_conifer`)

Conditional on actual whole-log furnish; include debarking/chipping and bark fate inside the line; declare roadside-to-mill transport.

Selected flow: Coniferous pulpwood roundwood
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_furnish and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_furnish
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Non-coniferous pulpwood roundwood (`furnish_hardwood`)

Conditional on actual whole-log furnish; include debarking/chipping and bark fate inside the line; declare roadside-to-mill transport.

Selected flow: Non-coniferous pulpwood roundwood
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_furnish and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_furnish
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

UF binder (`binder_uf`)

Include only the resin actually used, in an independently supplied state matching the selected resin identity and actual provider reference. Record supplied mass, measured resin solids, water, supplier recipe and addition point. A bought prepared aqueous or otherwise compounded UF formulation requires one specific complete-formulation supply row and compatible provider preserving supplier manufacture/preparation/delivery before use; the generic resin UUID alone does not establish that complete supply. Its included resin, urea, water and additives are analytical composition only. Real independently purchased additions and actual onsite mixing water/utilities remain separate exchanges. Report resin solids separately; never equate wet formulation kg to dry resin kg or count included formulation water again as purchased process water.

Selected flow: Urea-formaldehyde resin 23e41b7b-0991-4cf7-8625-7a30d23bbb27
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

MUF binder (`binder_muf`)

Include only the resin actually used. Record delivered formulation mass, solids, water, supplier recipe and addition point; report resin solids separately and never count formulation water again as purchased process water.

Selected flow: Melamine-urea-formaldehyde adhesive resin for MDF
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

pMDI binder (`binder_pmdi`)

Selected flow: Polymeric diphenylmethane diisocyanate adhesive resin for MDF
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Separate urea addition (`additive_urea`)

Conditional on separate urea dosing supported by the actual recipe; report product mass, not nitrogen mass. Embedded urea already in purchased resin is not another exchange.

Selected flow: Urea 3f8850c0-f718-4c4b-8fcb-8fd42e03aa8e
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Paraffin wax addition (`additive_wax`)

Conditional on petroleum-fraction paraffin wax actually supplied independently in a state and mass reference matching the selected identity and provider. Measure actual supplied wax mass/state; no wax dosage is prescribed. A bought wax emulsion requires one specific complete-emulsion supply row and compatible provider including supplier manufacture/emulsification/preparation/delivery before use; its included wax, carrier water and additives remain analytical subledgers, not extra purchases. Actual separately purchased wax/other constituents and real onsite emulsification or mixing water/utilities are separate exchanges. Never assign whole wet emulsion kg to the paraffin-wax UUID; an unresolved complete-emulsion identity remains pending.

Selected flow: Paraffin wax 17bff97f-179d-49d4-9e97-5128bd6020a6
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Ammonium sulphate hardener (`additive_hardener`)

Conditional on ammonium sulphate actually purchased separately in a supplied state matching the selected chemical identity and provider, and actually added in the evidenced recipe. Never infer catalyst species from a generic catalyst survey entry. Record actual supplied chemical mass/state and any independently added onsite carrier water/mixing utilities. A bought prepared hardener solution or formulation requires its own specific complete-product supply row and compatible provider preserving supplier manufacture/preparation/delivery before use; included ammonium sulphate, water and additives are analytical composition only. Record its measured concentration/carrier water without assigning whole formulation kg to the constituent UUID. Other real separately supplied hardeners require their own atomic rows.

Selected flow: Ammonium sulphate 7f128b59-9df7-4b5d-ad0f-00103b916cf7
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Low-voltage purchased electricity (`line_electricity`)

Use this identity only for grid-average supply below 1 kV at the user. Meter refining, drying fans, forming, press hydraulics, finishing and emission control separately. Other voltages require matching identities.

Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7
Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66; unit group 93a60a57-a3c8-11da-a746-0800200c9a66 / MJ
Amount rule: Collect this actual exchange using cp_energy and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_energy
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Make-up process water (`line_water`)

Meter newly supplied treated process water for washing and manufacture; keep reused water, condensate and formulation water in separate physical ledgers.

Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_water and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_water
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Digester steam (`line_steam`)

Measure steam mass at the MDF digester boundary and record absolute pressure, temperature and quality; specify condensation into furnish. No pressure or saturation default is set.

Selected flow: Process steam delivered to MDF digester
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_thermal and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_thermal
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Indirect process heat (`line_heat`)

Conditional on indirect heat delivered to drying or pressing. MJ requires a supplier/background energy definition reconciled with measured supply/return enthalpy or a calibrated heat meter. Until then retain an unresolved measurement basis.

Selected flow: Indirect process heat delivered to MDF manufacture
Flow property / unit: Delivered heat measurement basis unresolved; MJ; flow property/unit group UUID unresolved / MJ
Amount rule: Collect this actual exchange using cp_thermal and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_thermal
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Direct dryer natural gas (`dryer_gas`)

Conditional on direct-fired drying; measure delivered gas volume at disclosed conditions and fuel composition. This row excludes the boiler and oxidizer fuel. Identity is retained but quantity compatibility with background m3 remains pending. Record supplier/background reference quantity A, reference temperature T, absolute pressure P, dry/wet composition and compressibility Z, plus meter conditions and composition on the same basis. Reconcile the actual delivery/loss gate and convert only with these measured/declared conditions; a Volume/m3 property establishes neither Nm3 nor standard conditions. An unknown supplier or background volume definition leaves the link incomplete.

Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66; unit group 93a60a57-a3c8-12da-a746-0800200c9a66 / m3
Amount rule: Collect this actual exchange using cp_energy and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_energy
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Oxidizer natural gas (`control_gas`)

Conditional on a fuel-fired emissions-control oxidizer; meter separately and bind downstream stack tests, including any destruction of incoming organics. Identity is retained but quantity compatibility with background m3 remains pending. Record supplier/background reference quantity A, reference temperature T, absolute pressure P, dry/wet composition and compressibility Z, plus meter conditions and composition on the same basis. Reconcile the actual delivery/loss gate and convert only with these measured/declared conditions; a Volume/m3 property establishes neither Nm3 nor standard conditions. An unknown supplier or background volume definition leaves the link incomplete.

Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66; unit group 93a60a57-a3c8-12da-a746-0800200c9a66 / m3
Amount rule: Collect this actual exchange using cp_energy and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_energy
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Internal handling diesel (`handling_diesel`)

Conditional on diesel-powered loaders/forklifts; collect purchased fuel and model actual combustion exhaust separately. This excludes inbound road transport datasets.

Selected flow: Diesel fuel 9d258d75-6792-4f1c-9856-81602ed8f816
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_energy and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_energy
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Petroleum lubricating oil (`line_oil`)

Conditional on matching petroleum-fraction lubricant; retain equipment application and replacement records, distinct from recirculating hot-oil heat transfer.

Selected flow: Lubricating oil 66628f20-9d33-4997-bd6c-6357453fa268
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_recipe and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_recipe
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Polyethylene transport film (`pack_film`)

Conditional on polyethylene packaging; measure attributable film consumed and exclude it from net MDF reference mass.

Selected flow: Polyethylene film e64eb06c-6dc9-45f1-b003-3dc6c44b27e2
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_pack and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_pack
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Steel packaging strap (`pack_strap`)

Conditional on actual steel strap; require supplier grade and production route instead of substituting a recycled 99% Fe/1% C band with an unconfirmed route.

Selected flow: Steel strapping for MDF transport packaging
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_pack and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_pack
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Waste flows

Elementary flows

Outputs

Product flows

Finished uncoated MDF (`mdf_output`)

One accepted cooled, sanded and trimmed board output at the mill gate, excluding transport packaging. There is no second finished-MDF handoff output in this aggregated line.

Selected flow: Medium density fiberboard 57c184ac-a2d3-4500-af7b-80609ed89d2f
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: 1 kg
Value mode: Fixed value (fixed_value)
Specificity: Product-specific (product_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Method formula (method_formula)
Collection protocol: cp_output
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021

Returned heating condensate (`condensate_return`)

Conditional on recovered condensate leaving the line for utility generation; reconcile its mass and enthalpy at both link ends. Direct digester condensate retained in fibres is not this return.

Selected flow: Returned steam condensate from MDF indirect heating
Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Amount rule: Collect this actual exchange using cp_thermal and divide by accepted net MDF mass for the same period; apply the corresponding calculation rules; missing values remain unresolved with no literature default.
Value mode: Calculated value (calculated_value)
Specificity: Site-specific (site_specific)
Normalization basis: per 1 kg reference flow
Basis kind: Process output (process_output)
Evidence kind: Calculated from collection (calculated_from_collection)
Collection protocol: cp_thermal
Sources: corrim-mdf-2024; epa-mdf-2002; usda-wood-handbook-2021