Process Data set: Twin chair w/wooden legs (en)

Process Data set: Twin chair w/wooden legs (en) en

Process information

Key Data Set Information
Location	EE
Geographical representativeness description	Europa and USA
Reference year	2025
Name	Twin chair w/wooden legs
Technical purpose of product or process	Twin is a unique chair with beautiful flow in the design, and looks equally good from all angles. The soft, organic design invites you to a flexible and relaxed sitting position, where you sit exactly as it comes most naturally to you. The wooden base bears witness to good craftsmanship, with great details and finger joints. It is also very easy to clean, with a crumb gap between the seat, back and armrests. Distance between seat and back - Right/left facing armrests - Upolstered seat/back - Wooden base - Chemical disinfectant ok (acid-cured varnish) - EPD (Environmental Product Declaration) - Møbelfakta
Classification	Class name : Hierarchy level EPDNorge: Furniture / Soft seating
General comment on data set	Data quality: Specific data for the product composition are provided by the manufacturer. They represent the production of the declared product and were collected for EPD development in the year of study. Background data is based on registered EPDs according to EN 15804, Ostfold Research databases, ecoinvent and other LCA databases. The data quality of the raw materials in A1 is presented in the table below. Allocation: The allocation is made in accordance with the provisions of EN 15804. Incoming energy and water and waste production in-house is allocated equally among all products through mass allocation. Effects of primary production of recycled materials is allocated to the main product in which the material was used. The recycling process and transportation of the material is allocated to this analysis. Cut-off criteria: All major raw materials and all the essential energy is included. The production processes for raw materials and energy flows with very small amounts (less than 1%) are not included. These cut-off criteria do not apply for hazardous materials and substances.
Copyright	Yes
Owner of data set	Helland Møbler AS
Quantitative reference
Reference flow(s)	Twin chair w/wooden legs - 1.0 * 1.0 Stück (Number of pieces)
Biogenic carbon content	Carbon content (biogenic): 0.739285714286 kg Carbon content (biogenic) - packaging: 1.2962962964 kg
Time representativeness
Data set valid until	2030
Time representativeness description	2025-05-22 - 2030-05-22
Publication date	2025-05-22
Technological representativeness
Technology description including background system	Width: 69cm, Height: 79cm, Depth: 75cm, Seat height 43cm, Max. user weight 160 kg Weight: 12,55 kg (without cardboard) The product is tested and approved according to the following standards: The testing laboratory has been accredited by the Latvian National Accreditation Bureau LATAK in accordance with the requirements of LVS EN ISO/IEC 17025:2017 and has been assigned registration No. T-316. NS-EN 16139: 2013 NS-EN 1022: 2005 NS-EN 1335-3: 2005 NS-EN 1728: 2012

Modelling and validation

Subtype

specific dataset

LCA methodology report

NPCR 026:2018 Part B for furniture

Data sources, treatment and representativeness

Documentation of data quality management

NPCR 026:2018 Part B for furniture

Data source(s) used for this data set

ecoinvent database (all versions)

Original EPDs

NEPD-11162-11109_Twin-chair-w-wooden-legs.pdf

Completeness

Validation

Type of review
Independent external review

Reviewer name and institution
Elisabet Amat

Compliance Declarations

Compliance

Compliance system name

EN 15804+A2

Approval of overall compliance

Fully compliant

Nomenclature compliance

Fully compliant

Methodological compliance

Fully compliant

Review compliance

Fully compliant

Documentation compliance

Fully compliant

Quality compliance

Fully compliant

Compliance

Compliance system name

ISO 14025

Approval of overall compliance

Fully compliant

Nomenclature compliance

Fully compliant

Methodological compliance

Fully compliant

Review compliance

Fully compliant

Documentation compliance

Fully compliant

Quality compliance

Fully compliant

Compliance

Compliance system name

ISO 21930

Approval of overall compliance

Fully compliant

Nomenclature compliance

Fully compliant

Methodological compliance

Fully compliant

Review compliance

Fully compliant

Documentation compliance

Fully compliant

Quality compliance

Fully compliant

Administrative information

Data generator
Data set generator / modeller	LCA.no AS
Data entry by
Time stamp (last saved)	2025-08-13T11:43:42
Data set format(s)	ILCD format EPD Data Format Extensions v1.2
Publication and ownership
UUID	f004ee77-26b8-466a-869e-ebd93f3f0332
Date of last revision	2025-05-21T12:32:14.1827115Z
Data set version	00.03.000
Registration authority	EPD Norway
Registration number	NEPD-11162-11109
Owner of data set	Helland Møbler AS
Copyright	Yes
License type	Free of charge for all users and uses
Access and use restrictions	None
Publisher	EPD Norway

Environmental indicators

Indicators of life cycle

Indicator	Direction	Unit	Production A1-A3	Transport A4	Installation A5	Maintenance B2	Transport C2	Waste processing C3	Disposal C4	Recycling Potential D
Use of renewable primary energy (PERE)	Input	MJ	185	0.7934	0.003433	20.46	0.04851	0.1344	0.02446	-60.14
Use of renewable primary energy resources used as raw materials (PERM)	Input	MJ	39.55	0	-4.095	0	0	-23.17	0	0
Total use of renewable primary energy resource (PERT)	Input	MJ	224.6	0.7934	-4.092	20.46	0.04851	-23.03	0.02446	-60.14
Use of non renewable primary energy (PENRE)	Input	MJ	989.5	52.64	0.1911	107.1	1.071	4.761	1.062	-23.92
Use of non renewable primary energy resources used as raw materials (PENRM)	Input	MJ	149.1	0	-4.247	0	0	-144.9	0	0
Total use of non renewable primary energy resource (PENRT)	Input	MJ	1139	52.64	-4.056	107.1	1.071	-140.1	1.062	-23.92
Use of secondary material (SM)	Input	kg	3.944	0	0	0	0	0	0	0
Use of renewable secondary fuels (RSF)	Input	MJ	0.7872	0.02846	0.0001081	1.496	0.001576	0.003176	0.0006363	0.05137
Use of non renewable secondary fuels (NRSF)	Input	MJ	0.617	0.1023	0.0004132	0.3927	0.005434	0	0.04321	-1.7
Use of net fresh water (FW)	Input	m3	0.9039	0.005809	0.00009201	0.8715	0.0004381	0.01661	0.0009594	-0.07462
Hazardous waste disposed (HWD)	Output	kg	0.4466	0.00277	0	0.01628	0.0001503	0	3.887	-0.009329
Non hazardous waste dispose (NHWD)	Output	kg	12.35	2.425	0.8	0.4023	0.1593	0	0.1429	-0.9239
Radioactive waste disposed (RWD)	Output	kg	0.003686	0.0003576	0	0.0007587	0.00000429	0	0.0000065	-0.00004527
Components for re-use (CRU)	Output	kg	0	0	0	0	0	0	0	0
Materials for recycling (MFR)	Output	kg	0.05307	0	0.7022	0	0	1.941	0	0
Materials for energy recovery (MER)	Output	kg	0.602	0	0.000005953	0	0	12.3	0	0
Exported electrical energy (EEE)	Output	MJ	0.3528	0	0.04005	0	0	7.577	0	0
Exported thermal energy (EET)	Output	MJ	5.338	0	0.6058	0	0	114.6	0	0

Core environmental impact indicators

Indicator	Unit	Production A1-A3	Transport A4	Installation A5	Maintenance B2	Transport C2	Waste processing C3	Disposal C4	Recycling Potential D
Abiotic depletion potential - fossil resources (ADPF)	MJ	1136	52.63	0.1911	106.9	1.071	4.746	1.062	-23.93
Abiotic depletion potential - non-fossil resources (ADPE)	kg Sb-eqv.	0.001565	0.0001048	3.178E-7	0.00004386	0.000006152	0.000002143	7.859E-7	-0.00003612
Acidification potential, Accumulated Exceedance (AP)	mol H+ eqv.	0.4228	0.01004	0.00006339	0.03053	0.0003549	0.009779	0.0003375	-0.01399
Global Warming Potential - biogenic (GWP-biogenic)	kg CO2 eqv.	-6.597	0.001494	1.188	0.03657	0.00008574	4.055	0.00004344	-0.002321
Global Warming Potential - fossil fuels (GWP-fossil)	kg CO2 eqv.	74.38	3.493	0.01924	5.229	0.0506	10.82	0.05429	-2.376
Global Warming Potential - total (GWP-total)	kg CO2 eqv.	68.02	3.496	1.208	5.277	0.05076	14.88	0.05435	-2.402
Global Warming Potential - land use and land use change (GWP-luluc)	kg CO2 eqv.	0.2425	0.001319	0.000004352	0.01198	0.00007891	0.00007112	0.00001445	-0.02377
Global warming potential except emissions and uptake of biogenic carbon (GWP-IOBC/GHG)	kg CO2 eqv.	78.3	3.496	0.01925	5.642	0.05076	12.32	0.0577	-3.241
Eutrophication potential - freshwater (EP-freshwater)	kg P eqv.	0.003438	0.00002907	1.093E-7	0.0005512	0.000001858	0.00000431	5.878E-7	-0.0001645
Eutrophication potential - marine (EP-marine)	kg N eqv.	0.08108	0.001962	0.00002667	0.003924	0.00009389	0.005435	0.0001183	-0.003555
Eutrophication potential - terrestrial (EP-terrestrial)	mol N eqv.	0.7901	0.02197	0.000227	0.04821	0.00105	0.05212	0.001315	-0.0374
Photochemical Ozone Creation Potential (POCP)	kg NMVOC eqv.	0.268	0.00841	0.0000667	0.0124	0.0003842	0.01241	0.0003762	-0.01392
Depletion potential of the stratospheric ozone layer (ODP)	kg CFC 11 eqv.	0.00000665	7.844E-7	2.867E-9	4.439E-7	1.044E-8	5.722E-8	1.416E-8	-0.04864
Water (user) deprivation potential (WDP)	m3 world eqv.	4437	54.28	0.3162	1621	3.172	14.29	3.096	-30.31

Additional environmental impact indicators

Indicator	Unit	Production A1-A3	Transport A4	Installation A5	Maintenance B2	Repair B3	Replacement B4	De-construction C1	Transport C2	Waste processing C3	Disposal C4	Recycling Potential D
¹This impact category deals mainly with the eventual impact of low dose ionizing radiation on human health of the nuclear fuel cycle. It does not consider effects due to possible nuclear accidents, occupational exposure nor due to radioactive waste disposal in underground facilities. Potential ionizing radiation from the soil, from radon and from some construction materials is also not measured by this indicator.
²The results of this environmental impact indicator shall be used with care as the uncertainties on these results are high or as there is limited experiences with the indicator.
Potential Human exposure efficiency relative to U235 (IRP)¹	kBq U235 eqv.	3.601	0.2301	0.0008254	0.9283	0	0	0	0.003498	0.007521	0.004339	-0.05486
Potential incidence of disease due to PM emissions (PM)²	disease incidence	0.000005388	2.088E-7	9.67E-10	8.905E-8	0	0	0	1.174E-8	4.21E-8	5.907E-9	-4.751E-7
Potential Soil quality index (SQP)²	unitless	511.9	35.27	0.1633	26	0	0	0	1.996	0.5491	2.395	-64.91
Potential Comparative Toxic Unit for humans - non-cancer effects (HTP-nc)²	CTUh	0.000001666	4.451E-8	2.94E-10	8.55E-8	0	0	0	2.61E-9	3.468E-8	9.33E-10	1.288E-7
Potential Comparative Toxic Unit for humans - cancer effects (HTP-c)²	CTUh	1.588E-7	0	7E-12	2.74E-9	0	0	0	0	1.023E-9	3.1E-11	-9.169E-9
Potential Comparative Toxic Unit for ecosystems (ETP-fw)²	CTUe	2619	39.59	0.2424	76.67	0	0	0	1.563	3E+1	0.7754	-147.2