Cement - Part 2: Assessment and verification of constancy of performance

This document specifies the scheme for the assessment and verification of constancy of performance (AVCP) of cements, including certification of constancy of performance.
The document provides technical rules for factory production control, further testing of samples taken at the manufacturing plant (autocontrol testing) and assessment of the performance of the cement, initial inspection of the manufacturing plant and of factory production control, continuing surveillance, assessment and evaluation of factory production control and audit-testing of samples. It also provides rules for actions to be followed in the event of non-conformity and requirements for depots.
In this document, the word "cement" is used to refer both to common cements as defined in EN 197 1 and to other cements and binders for which the relevant product specification standard makes reference to this document and which are submitted for certification. Such a cement is produced at a given factory and belongs to a particular type and a particular strength class, as defined and specified in the relevant product specification standard.
The guidelines given in the Technical Report CEN/TR 14245 [1] contain information for the application of this document.
This document is linked with the Annexes ZA of European Standards covering cements and binders, i.e. EN 197 1, EN 14216, EN 14647, EN 413 1 and EN 15743.
NOTE   The reason for having drafted this separate document is that the provisions it includes are applicable to different products covered by different European Standards.

Zement - Teil 2: Bewertung und Überprüfung der Leistungsbeständigkeit

Dieses Dokument legt das Verfahren für die Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP, en: assessment and verification of constancy of performance) von Zementen einschließlich der Zertifizierung der Leistungsbeständigkeit fest.
Das Dokument enthält technische Regeln für die werkseigene Produktionskontrolle, die weitere Prüfung von Proben, die im Herstellungsbetrieb (interne Überwachungsprüfungen) entnommen wurden, und die Beurteilung der Leistung von Zement, die Erstüberwachung des Herstellungsbetriebs und der werkseigenen Produktionskontrolle, die laufende Überwachung, die Bewertung und Evaluierung der werkseigenen Produktionskontrolle und die Fremdüberwachungsprüfungen von Proben. Es enthält darüber hinaus Regeln für Maßnahmen, die bei Nichtkonformität zu ergreifen sind, sowie Anforderungen für Herstellerdepots.
In diesem Dokument verweist das Wort „Zement“ sowohl auf Normalzemente, wie in EN 197 1 festgelegt, als auch auf weitere Zemente und Bindemittel, deren entsprechende Produktnormen auf dieses Dokument verweisen und die der Zertifizierung unterworfen werden. Solch ein Zement wird in einem bestimmten Werk hergestellt und gehört zu einer bestimmten Art und Festigkeitsklasse, wie in der zugehörigen Produktnorm definiert und festgelegt.
Die im Technischen Bericht CEN/TR 14245 [1] gegebene Anleitung enthält Informationen für die Anwendung dieses Dokuments.
Dieses Dokument ist verknüpft mit den Anhängen ZA von Europäischen Normen, die Zement und Bindemittel behandeln, d. h. EN 197 1, EN 14216, EN 14647, EN 413 1 und EN 15743.
ANMERKUNG   Grund für die Verfassung dieses gesonderten Dokuments ist, dass die hierin enthaltenen Festlegungen auf unterschiedliche Produkte anwendbar sind, die in verschiedenen Europäischen Normen behandelt werden.

Ciment - Partie 2: Evaluation et vérification de la constance de la performance

Le présent document spécifie le système d’évaluation et de vérification de la constance des performances (EVCP) des ciments, qui inclut une certification de la constance des performances.
Ce document fournit les règles techniques pour le contrôle de la production en usine, les essais complémentaires sur des échantillons prélevés dans l’établissement de fabrication (essais d’autocontrôle) et l’évaluation des performances du ciment, l’inspection initiale de l’établissement de fabrication et du contrôle de la production en usine, la surveillance, l’évaluation et l’appréciation permanentes du contrôle de la production en usine et les essais par sondage des échantillons. Il établit également des règles à suivre en cas de non-conformité et les exigences applicables aux centres de distribution et aux dépôts.
Dans le présent document, le terme « ciment » est utilisé pour faire référence aux ciments courants tels que définis dans l’EN 197-1 ainsi qu’aux autres ciments et liants dont les normes de spécification de produit correspondantes font référence au présent document et qui sont soumis à certification. Un tel ciment est produit dans une usine donnée et appartient à un type et à une classe de résistance particuliers, définis et spécifiés dans la norme de spécification de produit correspondante.
Les lignes directrices données dans le Rapport technique CEN/TR 14245 [4] contiennent des informations sur l’application du présent document.
NOTE   La raison pour laquelle ce document séparé a été rédigé est que les dispositions qu’il contient sont applicables à différents produits couverts par des Normes européennes différentes.

Cement - 2. del: Ocenjevanje in preverjanje nespremenljivosti lastnosti

General Information

Status
Published
Publication Date
10-Mar-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
11-Mar-2020
Completion Date
11-Mar-2020

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SLOVENSKI STANDARD
SIST EN 197-2:2020
01-maj-2020
Nadomešča:
SIST EN 197-2:2014
Cement - 2. del: Ocenjevanje in preverjanje nespremenljivosti lastnosti
Cement - Part 2: Assessment and verification of constancy of performance
Zement - Teil 2: Bewertung und Überprüfung der Leistungsbeständigkeit
Ciment - Partie 2: Evaluation et vérification de la constance de la performance
Ta slovenski standard je istoveten z: EN 197-2:2020
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
SIST EN 197-2:2020 en,fr,de

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

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SIST EN 197-2:2020
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SIST EN 197-2:2020
EN 197-2
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 91.100.10 Supersedes EN 197-2:2014
English Version
Cement - Part 2: Assessment and verification of constancy
of performance

Ciment - Partie 2: Evaluation et vérification de la Zement - Teil 2: Bewertung und Überprüfung der

constance de la performance Leistungsbeständigkeit
This European Standard was approved by CEN on 27 October 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

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

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

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 197-2:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 197-2:2020
EN 197-2:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

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

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

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

4 Factory production control ......................................................................................................................... 7

4.1 General requirements ................................................................................................................................... 7

4.1.1 Concept ............................................................................................................................................................... 7

4.1.2 Works' quality documentation................................................................................................................... 7

4.1.3 Quality management system ....................................................................................................................... 8

4.1.4 System of documentation ............................................................................................................................. 8

4.2 Internal quality control................................................................................................................................. 9

4.2.1 Process control................................................................................................................................................. 9

4.2.2 Measuring and testing ................................................................................................................................... 9

4.2.3 Handling, storage, packaging and delivery ............................................................................................ 9

4.3 Autocontrol testing of samples .................................................................................................................. 9

4.3.1 Sampling and testing ...................................................................................................................................... 9

4.3.2 Corrective action .......................................................................................................................................... 10

4.3.3 Measuring and test equipment for autocontrol testing ................................................................. 10

4.3.4 Quality records .............................................................................................................................................. 10

5 Tasks for the purpose of certification .................................................................................................. 10

5.1 Assessment of the performance of the cement.................................................................................. 10

5.2 Initial inspection of the manufacturing plant and of factory production control ................ 11

5.2.1 Inspection of a new factory ....................................................................................................................... 11

5.2.2 Inspection of an existing factory ............................................................................................................. 11

5.2.3 Criteria for the assessment of the production equipment ............................................................ 11

5.2.4 Criteria for the assessment of laboratories ........................................................................................ 11

5.3 Continuing surveillance, assessment and evaluation of factory production control .......... 12

5.3.1 Inspection of the factory and the factory production control ...................................................... 12

5.3.2 Evaluation of the results of autocontrol testing of samples ......................................................... 12

5.4 Audit-testing of samples taken at the factory/depot ...................................................................... 12

5.4.1 Sampling .......................................................................................................................................................... 12

5.4.2 Testing .............................................................................................................................................................. 13

5.4.3 Evaluation of test results ........................................................................................................................... 13

5.5 Reports ............................................................................................................................................................. 13

5.6 Actions to be taken in the event of non-conformity ........................................................................ 14

5.6.1 Following inspection of the factory production control and evaluation of the results

of autocontrol testing ................................................................................................................................. 14

5.6.2 Following evaluation of the results of the audit-testing ................................................................ 14

6 Procedure for certification of constancy of performance of the product ................................ 14

Annex A (normative) Evaluation of the representativeness and the accuracy of the 28 day

strength test results .................................................................................................................................... 17

A.1 General ............................................................................................................................................................. 17

A.2 Sets of results considered ......................................................................................................................... 17

A.3 Evaluation procedure ................................................................................................................................. 17

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SIST EN 197-2:2020
EN 197-2:2020 (E)

A.3.1 Introduction ................................................................................................................................................... 17

A.3.2 Symbols ............................................................................................................................................................ 17

A.3.3 Evaluation of whether set A and set B belong to the same population (sampling error

check) ................................................................................................................................................................ 18

A.3.4 Comparison between set B and set C in order to check the accuracy of the

autocontrol testing (testing error check) ............................................................................................ 19

A.3.5 Masonry cement ............................................................................................................................................ 19

A.3.6 Calcium aluminate cement ........................................................................................................................ 19

Annex B (informative) Procedure for certification of constancy of performance of cement ......... 20

Bibliography ................................................................................................................................................................. 21

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SIST EN 197-2:2020
EN 197-2:2020 (E)
European foreword

This document (EN 197-2:2020) has been prepared by Technical Committee CEN/TC 51 “Cement and

building limes”, the secretariat of which is held by NBN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by September 2020, and conflicting national standards

shall be withdrawn at the latest by September 2020.

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

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 197-2:2014.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

Compared to the version EN 197-2:2014, the following major changes have been made in this

document:

a) use of the terminology given by the Delegated Regulation (EU) No 568/2014 amending Annex V to

Regulation (EU) No 305/2011 (Construction Products Regulation), in particular adoption of the

tasks defined in the Delegated Regulation for AVCP system 1+ for a re-arrangement of the clauses of

this document;

b) numbering of the clauses according to the order of the tasks specified in this Delegated Regulation;

c) removal of the rules for dispatching centres;
d) clarification/specification of the rules for depots;

e) replacement of the term “Works’ quality manual” by “Works’ quality documentation”;

f) replacement of the term “management representative” by “quality manager”;

g) deletion of informative Annex C “Comparison of terminology according to the CPD and the CPR” as

this annex was considered to be no longer necessary;
h) editorial revision of the document.
EN 197, Cement, is currently composed of the following parts:
— Part 1: Composition, specifications and conformity criteria for common cements
— Part 2: Assessment and Verification of Constancy of Performance
Annex A of this document is normative, Annex B is informative.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
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SIST EN 197-2:2020
EN 197-2:2020 (E)
1 Scope

This document specifies the scheme for the assessment and verification of constancy of performance

(AVCP) of cements, including certification of constancy of performance.

The document provides technical rules for factory production control, further testing of samples taken

at the manufacturing plant (autocontrol testing) and assessment of the performance of the cement,

initial inspection of the manufacturing plant and of factory production control, continuing surveillance,

assessment and evaluation of factory production control and audit-testing of samples. It also provides

rules for actions to be followed in the event of non-conformity and requirements for depots.

In this document, the word “cement” is used to refer both to common cements as defined in EN 197-1

and to other cements and binders for which the relevant product specification standard makes

reference to this document and which are submitted for certification. Such a cement is produced at a

given factory and belongs to a particular type and a particular strength class, as defined and specified in

the relevant product specification standard.

The guidelines given in the Technical Report CEN/TR 14245 [1] contain information for the application

of this document.

This document is linked with the Annexes ZA of European Standards covering cements and binders, i.e.

EN 197-1, EN 14216, EN 14647, EN 413-1 and EN 15743.

NOTE The reason for having drafted this separate document is that the provisions it includes are applicable

to different products covered by different European Standards.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

EN 196-7, Methods of testing cement — Part 7: Methods of taking and preparing samples of cement

EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements

EN 413-1, Masonry cement — Part 1: Composition, specifications and conformity criteria

EN 14647, Calcium aluminate cement — Composition, specifications and conformity criteria

EN 15743, Supersulfated cement — Composition, specifications and conformity criteria

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp

NOTE In the context of this document the term “construction product” refers to cement.

3.1
AVCP
abbreviation for assessment and verification of constancy of performance
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SIST EN 197-2:2020
EN 197-2:2020 (E)
3.2
certificate of constancy of performance of the product

document issued under the rules of the scheme for the AVCP indicating that adequate confidence is

provided that the cement conforms to the performance(s) declared in accordance with the relevant

product standard
3.3
initial period

immediate period starting after the first issuing of the certificate of constancy of performance of the

product for a cement and at the latest from the first dispatching of cement
3.4
factory production control

documented, permanent and internal control of production in a factory, in accordance with the relevant

harmonized technical specifications

[SOURCE: Regulation (EU) No 305/2011, Article 2 (Construction Product Regulation)[4]]

3.5
factory

facility used by a manufacturer for the production of cement using equipment which is suitable for

continuous mass production of cement including, in particular, equipment for adequate grinding and

homogenization and the necessary silo capacity for the storage and dispatch of each cement produced

Note 1 to entry: This equipment and the production control applied allow the control of production with

sufficient accuracy.
3.6
new factory
factory which is not already producing cement(s) certified using EN 197-2
3.7
existing factory
factory which is already producing cement(s) certified using EN 197-2
3.8
depot

bulk cement handling facility not located at the factory used for the dispatch of cement, whether in bulk

or bagged, after transfer or storage where the manufacturer has full responsibility for all aspects of the

quality of the cement
3.9
distributor

natural or legal person in the supply chain, other than the manufacturer or the importer, who makes a

construction product available on the market

[SOURCE: Regulation (EU) No 305/2011, Article 2 (Construction Product Regulation)]

3.10
importer

natural or legal person established within the European Union, who places a construction product from

a third country on the European Union market

[SOURCE: Regulation (EU) No 305/2011, Article 2 (Construction Product Regulation)]

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SIST EN 197-2:2020
EN 197-2:2020 (E)
3.11
assessment of the performance

determination of the essential characteristics of a construction product, on the basis of testing

(including sampling), calculation, tabulated values or descriptive documentation of the product

3.12
product certification body

body notified in accordance with Chapter VII of Regulation (EU) No 305/2011 to carry out constancy of

performance certification
3.13
works’ quality documentation

documentation that provides information on the factory production control which is applied by a

manufacturer at a particular factory to ensure constancy of performance of the cement

4 Factory production control
4.1 General requirements
4.1.1 Concept

Factory production control means the permanent internal control of cement production and consists of

internal quality control (see 4.2) complemented by autocontrol testing of samples of cement taken at

the point of release (see 4.3).

NOTE 1 The requirements of this document as regards factory production control apply to factories and their

depots.

NOTE 2 The requirements of this document in regards to factory production control take into account the

clauses of EN ISO 9001 [2] which are relevant to the production, process control and testing of cement.

4.1.2 Works' quality documentation

The manufacturer's documentation and procedures for factory production control shall be described in

a Works' quality documentation, which shall adequately describe, amongst other things, for each

factory and depot:

a) the quality aims and the organizational structure, responsibilities and powers of the management

with regard to product quality and the means to monitor the achievement of the required product

quality and the effective operation of the internal quality control (see 4.1.3 and 4.2);

b) the manufacturing and quality control techniques, processes and systematic actions that will be

used (see 4.2.1, 4.2.3 and 4.3.2);

c) the inspections and tests that will be carried out before, during and after manufacture, and the

frequency with which they will be carried out (see 4.2.2, 4.3.1 and 4.3.3).

The Works' quality documentation shall include an adequate system of documentation (see 4.1.4 and

4.3.4).

1 This testing corresponds also to the “further testing of samples taken at the manufacturing plant” mentioned

in Delegated Regulation (EU) No 568/2014 amending Annex V to Regulation (EU) No 305/2011 (Construction

Products Regulation) .
[5]
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SIST EN 197-2:2020
EN 197-2:2020 (E)

The Works' quality documentation shall address and document the procedures operated to ensure that

the manufactured cement conforms to the performance(s) declared in accordance with the relevant

product standard. The documentation may reference associated documents which provide further

details of the autocontrol testing of samples and the internal quality control. For the purpose of this

scheme, the term Works' quality documentation shall be considered to include these associated

documents.

In the case of an existing quality management system according to EN ISO 9001, the corresponding

quality documentation may also be applied for product certification if it meets all the requirements of

this document which are relevant to the factory production control of cement.
4.1.3 Quality management system
4.1.3.1 Quality policy statement

The Works' quality documentation shall include a statement by management defining its quality policy,

objectives and commitments to the attainment of product quality.
4.1.3.2 Quality manager

A quality manager shall be appointed who, irrespective of other responsibilities, shall have defined and

adequate authority and responsibility for ensuring that the requirements of this document for the AVCP

are implemented and maintained.
4.1.3.3 Internal audits and management review

In order to ensure the continuing suitability and effectiveness of the Work’s quality documentation to

meet the requirements of this document:
a) internal audits covering the scope of this Clause 4;

b) a management review of the functioning and the results of the factory production control, taking

into account records of the internal audits
shall be performed at least once a year.
4.1.3.4 Training

The Works' quality documentation shall describe the measures taken to ensure that all the personnel

involved in operations that can affect internal quality control and product quality have appropriate

experience or training. Appropriate records shall be retained.
4.1.4 System of documentation
4.1.4.1 Document control

All documents and data related to factory production control and to this scheme for the AVCP shall be

controlled.

This control shall ensure that the appropriate issues of all documents are available at essential

locations, that obsolete documents are withdrawn and that changes or modifications to any document

are effectively introduced.

A system shall be established to identify the current version of documents in order to prevent the use of

non-applicable documents.
4.1.4.2 Quality records

Records shall be retained to provide evidence of factory production control for at least the period

required.
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SIST EN 197-2:2020
EN 197-2:2020 (E)
4.2 Internal quality control
4.2.1 Process control
4.2.1.1 General

The Works' quality documentation shall describe the parameters for process planning, process control

and testing, inspection, corrective action, verification, dispatch and the associated records for each

factory and depot.
4.2.1.2 Constituents and composition of cement

Documented procedures and appropriate test methods shall be established to ensure that the

constituents meet the specifications in the relevant product specification standard and are suitable to

enable cement to be produced meeting the targets and control limits.

The Works' quality documentation shall describe the methods used by the manufacturer to ensure that

the composition of the cement produced conforms to the performance(s) declared in accordance with

the relevant product standard, including appropriate test methods.
4.2.1.3 Control of off-specification production or non-conformity

The Works' quality documentation shall contain procedures for the review and adjustment of the

factory production control in case of off-specification production or non-conformity.

The actions taken in the event of non-conformity shall be recorded in a report subject to inspection

during the management review.
4.2.2 Measuring and testing
4.2.2.1 Inspection, measuring and test equipment

The equipment for in-process inspection and testing shall be regularly checked and calibrated in

accordance with the procedures and frequencies laid down in the Works' quality documentation.

4.2.2.2 Inspection and test status

Procedures for the inspection and test status through the stages of manufacture shall be detailed in the

Works' quality documentation. These shall include procedures for the control of off-specification

intermediate materials.
4.2.3 Handling, storage, packaging and delivery

The Works' quality documentation shall describe the precautions taken for the protection of the quality

of the cement while under the responsibility of the manufacturer for the factory and each depot.

Delivery documentation shall allow traceability to the producing works.
4.3 Autocontrol testing of samples
4.3.1 Sampling and testing

A system of autocontrol testing shall be operated for each certified cement. This system shall be used to

demonstrate constancy of performance of the cement in accordance with the clause entitled

“Assessment and verification of constancy of performance – AVCP” in the relevant product specification

standard. The characteristics to be tested, the testing methods, the minimum frequency of autocontrol

testing during routine testing and initial period testing and the AVCP criteria including the statistical

evaluation of the autocontrol testing results shall be in accordance with the clause entitled “Assessment

and verification of constancy of performance – AVCP” in the relevant product specification standard.

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SIST EN 197-2:2020
EN 197-2:2020 (E)

NOTE In some versions of product specfifcation standards, the title of the clause “Assessment and verification

of constancy of performance – AVCP” is or was “Conformity criteria”.

For cements not being dispatched continuously, the frequency of testing and the point of sampling shall

be as specified in the Works' quality documentation.
The system of autocontrol testing shall include depots.

In the case of distributors or importers, where cements were already tested and certified under this

document, details are available in CEN/TR 14245.
All test data shall be documented.
4.3.2 Corrective action

In the event of cement yielding a test result not conforming to the single result threshold value AVCP

criteria specified in the relevant product specification standard, the affected quantity shall immediately

be determined, appropriate action shall be taken to prevent the dispatch of this quantity and the

affected customer shall be informed if such cement has been released. In addition, the causes of such

non-conformity shall immediately be determined, corrective actions shall be taken and a review of all

relevant factory production control procedures shall be undertaken. All such actions and findings shall

be appropriately recorded in a report subject to inspection during the management review.

In the event of a complaint plus warning, the minimum frequency of autocontrol testing of non-

conforming characteristics shall be doubled for a period of two months following the warning, unless it

can be demonstrated that adequate measures were taken from the time of the initial occurrence of the

non-conformity until its resolution, including doubling the minimum frequency of autocontrol testing

for a minimum period of two months.
4.3.3 Measuring and test equipment for autocontrol testing

The equipment used for autocontrol testing shall be regularly checked and calibrated in accordance

with procedures and frequencies laid down in the Works' quality documentation. These procedures can

include comparison of test results by proficiency testing.
4.3.4 Quality records

Records of the autocontrol test results and appropriate records on test equipment shall be retained for

at least the period required.
5 Tasks for the purpose of certification
5.1 Assessment of the performance of the cement

The assessment of the performance of the cement shall be based on the evaluation of test results

during the initial period of the cement, i.e. autocontrol test results (see 4.3.1) and the audit-test results

(see 5.4.3) obtained from the first sample and from further samples taken during the initial period.

NOTE In earlier editions of this document, the assessment of the performance of the cement was indicated as

“determination
...

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