Criteria for the assessment of conformity of a lot of sawn timber

This document defines the sampling plans and procedures for inspection by attributes (measurable properties) of sawn timber lots exhibiting a homogenous distribution of characteristics. It also gives control regulations and conditions for conformity or non conformity of a lot in view of the agreed specification.
This document applies to any sawn timber products claimed to comply with specifications defined in the sales contract.
It does not cover the spread of different qualities within a grade or between the contracted grades.
In case of a dispute, a sampling carried out only by customer or supplier is not valid as it cannot be guaranteed to be free from manipulation. Furthermore parties    are free to enlarge the sampling or make use of another method provided an agreement is made between the interested parties.

Kriterien zur Konformitätsprüfung eines Loses Schnittholz

Dieses Dokument legt Stichprobenahmepläne und -verfahren zur Überprüfung durch Merkmale (messbare
Eigenschaften) von Schnittholzlosen fest, die eine gleichmäßige Verteilung der Eigenschaften aufweisen. Sie
enthält außerdem Prüfanweisungen und Bedingungen für die Konformität oder Nicht-Konformität eines Loses
im Hinblick auf die vereinbarte Spezifikation.
Dieses Dokument ist anwendbar auf Schnittholzprodukte, für die davon ausgegangen wird, dass sie die in
einem Kaufvertrag definierten Spezifikationen erfüllen.
Es umfasst nicht die Überprüfung der Verteilung von verschiedenen Qualitäten innerhalb einer Handelsklasse
oder zwischen den vertraglich vereinbarten Güteklassen.
Im Streitfall ist eine Stichprobenahme, die allein vom Abnehmer oder allein vom Lieferanten durchgeführt
wurde, nicht bindend, da eine manipulationsfreie Stichprobenahme nicht immer nachgewiesen werden kann.
Darüber hinaus ist es möglich, den Stichprobenumfang zu vergrößern oder ein anderes Stichprobenahmeverfahren
anzuwenden, sofern eine entsprechende Vereinbarung zwischen den Beteiligten getroffen wurde.

Critères de vérification de la conformité d'un lot de bois scié

Le présent document définit les plans d’échantillonnage et les procédures pour le contrôle par attributs (propriétés mesurables) de lots de bois sciés montrant une distribution homogène des caractéristiques. Il précise aussi les descriptions de contrôle et les conditions de conformité ou non-conformité d’un lot par rapport à une spécification donnée.
Le présent document s’applique à tous bois sciés devant satisfaire à des spécifications définies dans un contrat de vente.
Il ne permet pas de juger la dispersion des différentes qualités dans un choix ou entre les différents choix objet du contrat.
A.1   En cas de litige, un échantillonnage n’est pas valable s’il a été effectué uniquement par le client ou le fournisseur car on ne peut pas toujours vérifier qu’il n’a pas fait l’objet de manipulations. Par ailleurs, les parties sont libres d’élargir l’échantillonnage ou d’utiliser une autre méthode à condition qu’il y ait accord entre les intéressés.

Merila za ugotavljanje skladnosti partije žaganega lesa

General Information

Status
Published
Publication Date
29-Jan-2008
Current Stage
9093 - Decision to confirm - Review Enquiry

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SLOVENSKI STANDARD
SIST-TS CEN/TS 12169:2008
01-julij-2008
1DGRPHãþD
SIST ENV 12169:2003
Merila za ugotavljanje skladnosti partije žaganega lesa
Criteria for the assessment of conformity of a lot of sawn timber
Kriterien zur Konformitätsprüfung eines Loses SchnittholzKriterien
Critere de vérification de la conformité d'un lot de bois scié
Ta slovenski standard je istoveten z: CEN/TS 12169:2008
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
SIST-TS CEN/TS 12169:2008 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
TECHNICAL SPECIFICATION
CEN/TS 12169
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
January 2008
ICS 79.040 Supersedes ENV 12169:2000
English Version
Criteria for the assessment of conformity of a lot of sawn timber

Critères de vérification de la conformité d'un lot de bois scié Kriterien zur Konformitätsprüfung eines Loses Schnittholz

This Technical Specification (CEN/TS) was approved by CEN on 22 October 2007 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their

comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available

promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)

until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 12169:2008: E

worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
CEN/TS 12169:2008 (E)
Contents Page

Foreword..............................................................................................................................................................3

Introduction .........................................................................................................................................................4

1 Scope......................................................................................................................................................5

2 Normative references............................................................................................................................5

3 Terms and definitions ...........................................................................................................................5

4 Conformity control.................................................................................................................................6

4.1 Objective.................................................................................................................................................6

4.2 Principle..................................................................................................................................................6

4.3 Applicable AQL......................................................................................................................................6

4.4 Type of inspection .................................................................................................................................6

5 Sampling.................................................................................................................................................6

5.1 Sampling rules.......................................................................................................................................6

5.2 Single procedure....................................................................................................................................7

5.2.1 Single sampling.....................................................................................................................................7

5.2.2 Double sampling....................................................................................................................................9

---------------------- Page: 3 ----------------------
CEN/TS 12169:2008 (E)
Foreword

This document (CEN/TS 12169:2008) has been prepared by Technical Committee CEN/TC 175 “Round and

sawn timber”, the secretariat of which is held by AFNOR.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes ENV 12169:2000.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
---------------------- Page: 4 ----------------------
CEN/TS 12169:2008 (E)
Introduction

The purpose of this document is to define an inspection system for a lot of sawn timber. This document uses

statistical sampling plans found in ISO 2859-1.
---------------------- Page: 5 ----------------------
CEN/TS 12169:2008 (E)
1 Scope

This document defines the sampling plans and procedures for inspection by attributes (measurable properties)

of sawn timber lots exhibiting a homogenous distribution of characteristics. It also gives control regulations

and conditions for conformity or non conformity of a lot in view of the agreed specification.

This document applies to any sawn timber products claimed to comply with specifications defined in the sales

contract.

It does not cover the spread of different qualities within a grade or between the contracted grades.

In case of a dispute, a sampling carried out only by customer or supplier is not valid as it cannot be

guaranteed to be free from manipulation. Furthermore parties are free to enlarge the sampling or make use

of another method provided an agreement is made between the interested parties.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 2859-1, Sampling procedures for inspection by attributes – Part 1: Sampling plans indexed by acceptable

quality level (AQL) for lot-by-lot inspection.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
lot of sawn timber

a number of sawn timber pieces of the same thickness and width and the same quality grade

NOTE A lot of sawn timber can be, for example:
 package of sawn timber,
 truckload, a wagon load or shipload of sawn timber,
 pile of sawn timber,
 kiln load.
3.2
acceptable Quality Level (AQL)

the maximum percentage of non-conforming pieces of sawn timber that can be considered satisfactory as a

process average
3.3
non-conforming piece
a piece which fails to meet the quality requirements
3.4
package
a part of a homogeneous lot
---------------------- Page: 6 ----------------------
CEN/TS 12169:2008 (E)
4 Conformity control
4.1 Objective

The objective of the inspection is to determine with a high probability whether the lot does not conform to the

specifications fixed in the contract and a complaint seems to be justified. Hence the decision is between

"conformity" and "nonconformity".
4.2 Principle

The control of the lot is carried out on the basis of attributes. The pieces making up the sample are defined as

"conforming" or "nonconforming". The decision regarding conformity or nonconformity of the lot is made on the

basis of the number of nonconforming pieces in comparison to the total number of the pieces in the sample.

In the case of simultaneous assessme
...

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