SIST EN 14321-2:2006
(Main)Glass in building - Thermally toughened alkaline earth silicate safety glass - Part 2: Evaluation of conformity/Product standard
Glass in building - Thermally toughened alkaline earth silicate safety glass - Part 2: Evaluation of conformity/Product standard
This European Standard covers the evaluation of conformity and the factory production control of flat thermally toughened alkaline earth silicate safety glass for use in buildings.
NOTE 1 This also includes requirements subject to regulation.
NOTE 2 For glass products with electrical wiring or connections for e.g. alarm or heating purposes, this European Standard covers only wiring subject for electrical potential difference to earth less than 50 V a.c. or less than 75 V d.c.
Glas im Bauwesen - Thermisch vorgespanntes Erdalkali-Silicat-Einscheibensicherheitsglas - Teil 2: Konformitätsbewertung/Produktnorm
Dieses Dokument umfasst die Konformitätsbewertung und die werkseigene Produktionskontrolle von flachem
thermisch vorgespanntem Erdalkali-Silicat-Einscheibensicherheitsglas für die Anwendung im Bauwesen.
ANMERKUNG 1 Dies beinhaltet ebenfalls Anforderungen, die Gegenstand gesetzlicher Bestimmungen sind.
ANMERKUNG2 Für Glaserzeugnisse mit elektrischer Verkabelung oder Anschlüssen wie z. B. Alarm- oder
Heizungsanwendungen, befasst sich dieses Dokument nur mit Verkabelungen, die einem Spannungsunterschied gegen Erde
von weniger als 50 V Wechselspannung oder weniger als 75 V Gleichspannung unterliegen.
Verre dans la construction - Verre de silicate alcalino-terreux de sécurité trempé thermiquement - Partie 2 : Evaluation de la conformité/Norme produit
La présente Norme européenne couvre l'évaluation de la conformité et le contrôle de la production en usine du verre plat de silicate alcalino-terreux de sécurité trempé thermiquement destiné a etre utilisé dans la construction.
NOTE 1 Le présent document comporte également des exigences soumises a la réglementation.
NOTE 2 Pour les produits verriers équipés d'un câblage ou de branchements électriques pour des besoins d'alarme ou de chauffage par exemple, la présente Norme européenne couvre uniquement les éléments de câblage prévus pour une différence de potentiel électrique a la terre inférieure a 50 V c.a. ou inférieure a 75 V c.c.
Steklo v gradbeništvu – Kaljeno zemljoalkalijsko silikatno varnostno steklo – 2. del: Ocena skladnosti/standard za izdelek
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Glass in building - Thermally toughened alkaline earth silicate safety glass - Part 2: Evaluation of conformity/Product standardSteklo v gradbeništvu – Kaljeno zemljoalkalijsko silikatno varnostno steklo – 2. del: Ocena skladnosti/standard za izdelekVerre dans la construction - Verre de silicate alcalino-terreux de sécurité trempé thermiquement - Partie 2 : Evaluation de la conformité/Norme produitGlas im Bauwesen - Thermisch vorgespanntes Erdalkali-Silicat-Einscheibensicherheitsglas - Teil 2: Konformitätsbewertung/ProduktnormTa slovenski standard je istoveten z:EN 14321-2:2005SIST EN 14321-2:2006en81.040.20ICS:SLOVENSKI
STANDARDSIST EN 14321-2:200601-februar-2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14321-2August 2005ICS 81.040.20English versionGlass in building - Thermally toughened alkaline earth silicatesafety glass - Part 2: Evaluation of conformity/Product standardVerre dans la construction - Verre alcalinoterreux desécurité trempé thermiquement - Partie 2 : Evaluation de laconformité/Norme produitGlas im Bauwesen - Thermisch vorgespanntes Erdalkali-Silicat-Einscheibensicherheitsglas - Teil 2:Konformitätsbewertung/ProduktnormThis European Standard was approved by CEN on 27 June 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14321-2:2005: E
EN 14321-2:2005 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Requirements.5 5 Evaluation of conformity.10 6 Marking and labelling.16 Annex A (normative)
Factory production control.17 Annex B (informative)
Tests for factory production control.23 Annex C (informative)
Provisions for voluntary involvement of third party(ies).25 Annex ZA (normative)
Clauses of this European Standard addressing the provisions of EU Construction Products Directive.26 Bibliography.36
EN 14321-2:2005 (E) 3 Foreword This European Standard (EN 14321-2:2005) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by IBN. 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 February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 89/106/EEC. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. No existing European Standard is superseded. This Part of the European Standard does not stand alone, it is a part of one standard: EN 14321-1: Glass in Building – Thermally toughened alkaline earth silicate safety glass – Part 1: Definition and description EN 14321-2: Glass in Building - Thermally toughened alkaline earth silicate safety glass – Part 2: Evaluation of conformity/Product standard This document contains other aspects of importance of trade. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 14321-2:2005 (E) 4
1 Scope This European Standard covers the evaluation of conformity and the factory production control of flat thermally toughened alkaline earth silicate safety glass for use in buildings.
NOTE 1 This also includes requirements subject to regulation.
NOTE 2 For glass products with electrical wiring or connections for e.g. alarm or heating purposes, this European Standard covers only wiring subject for electrical potential difference to earth less than 50 V a.c. or less than 75 V d.c. 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. EN 356, Glass in Building
– Security glazing
– Testing and classification of resistance against manual attack. EN 410, Glass in Building
– Determination of luminous and solar characteristics of glazing. EN 673, Glass in Building
– Determination of thermal transmittance (U-value) – Calculation method.
EN 1063, Glass in Building
– Security glazing – Testing and classification of resistance against bullet attack. EN 1096-1, Glass in Building – Coated glass – Part 1: Definitions and classification EN 1096-2, Glass in building – Coated glass – Part 2:
Requirements and test methods for class A, B and S coatings. EN 1096-3, Glass in building – Coated glass – Part 3:
Requirements and test methods for class C and D coatings. EN 12600, Glass in Building – Pendulum test – Impact test method and classification for flat glass. EN 12758, Glass in Building – Glazing and airborne sound insulation – Product descriptions and determination of properties. EN 12898, Glass in Building – Determination of the emissivity. prEN 13474 (all parts), Glass in building – Design of glass panes. EN 13501-1, Fire classification of construction products and building elements – Part 1: Classification using test data from reaction to fire tests. EN 13501-2, Fire classification of construction products and building elements – Part 2: Classification using test data from fire resistance tests. prEN 13501-5, Fire classification of construction products and building elements – Part 5: Classification using test data from fire exposure to roof
tests. EN 13541, Glass in Building – Security glazing – Testing and classification of resistance against explosion pressure. EN 14178-1, Glass in Building – Basic alkaline earth silicate glass products – Part 1: Float glass. EN 14321-1:2005, Glass in Building – Thermally toughened alkaline earth silicate safety glass – Part 1: Definition and description.
EN 14321-2:2005 (E) 5 3 Terms and definitions For the purpose of this European Standard, the terms and definitions given in EN 14321-1:2005 and the following apply. 3.1 initial type testing determination of the performance of a product (characteristic, durability), on the basis of either actual tests or other procedures (such as conventional, standardised, tabulated or general accepted values, standardised or recognised calculation methods, test reports when made available, …), in accordance with this document that demonstrates compliance with this document. 3.2 test report document that covers the results of tests undertaken on a representative sample of the product from production or on a prototype design of the product.
3.3 product description document that details the relevant parameters, e.g. process conditions, structure, etc., for defining a product that complies with the standard. It includes specific reference(s) to characteristics that are modified by the production process. 3.4 significant change variation in performance beyond the permitted tolerance for the characteristic. 4 Requirements 4.1 Product description For conformity purposes the thermally toughened alkaline earth silicate glass manufacturer is responsible for the preparation and maintenance of the product description. This description shall describe the product and/or product families. Disclosure of the product description shall be at the discretion of the thermally toughened glass manufacturer or his agent except in the case of regulatory requirements. The description shall contain at least a normative part. The description may also contain an informative part, when the manufacturer foresees further development of the product. The normative part of the description shall contain the following minimum information: a reference to EN 14321 Parts 1 and 2 and all other standards with which the manufacturer claims compliance. the radiometric properties and durability of coated glass, i.e. coated glass that conforms with EN 1096-1, EN 1096-2, EN 1096-3, when those properties are changed, intentionally or unintentionally, by the thermal toughening process.
The definition of product families shall be consistent with the normative part of the product description. The substitution of materials shall maintain the conformity with the product description. The substituting material can be added to the product family and also the product description when compliance has been demonstrated.
EN 14321-2:2005 (E) 6 4.2 Conformity with the definition of thermally toughened alkaline earth silicate safety glass Products shall conform to the definition and fulfil the requirements of thermally toughened alkaline earth silicate safety glass as defined in EN 14321-1. 4.3 Determination of the performances of characteristics 4.3.1 Characteristics of thermally toughened alkaline earth silicate safety glass 4.3.1.1 General The characteristics of thermally toughened alkaline earth silicate safety glass are those of the glass substrate (see 4.3.1.2). 4.3.1.2 Characteristics of glass panes used for thermally toughened alkaline earth silicate safety glass Panes shall be made of basic alkaline earth silicate glass products according to EN 14178-1. The panes may be coated according to EN 1096-1, EN 1096-2, EN 1096-3 and/or enamelled according to EN 14321-1. For the characteristics listed in Table 1, for thermally toughened alkaline earth silicate safety glass, generally accepted values or calculated values may be used.
Since the majority of the characteristics of Table 1 are not changed significantly by the thermal toughening process they shall be used for thermally toughened alkaline earth silicate safety glass. The exceptions shall be the characteristic bending strength (fg,k) and the resistance against sudden temperature changes and temperature differentials.
EN 14321-2:2005 (E) 7
Table 1 — Information on the characteristics of basic alkaline earth silicate glass, according to EN 14178-1, used for the production of thermally toughened alkaline earth silicate safety glass
Characteristic
Symbol
Unit
- density - hardness - Young's modulus - Poisson's ratio - Characteristic bending strength - Resistance against sudden temperature changes and temperature differentials
- Specific heat capacity - Coefficient of linear expansion - Thermal conductivity (for U-value) - Mean refractive index to visible radiation - Emissivity - Light transmittance - Solar direct transmittance - Total energy transmittance
ρ HK0,1/20 E µ fg,k c α λ n ε τv τe g
kg/m³ GPa Pa Dimensionless Pa K J/(kg.K) K-1 W/(m.K) Dimensionless Dimensionless Dimensionless Dimensionless Dimensionless
If some coatings, i.e. coated glass conforming with the EN 1096 series, when thermally toughened change their radiometric properties the manufacturer shall refer to the following for the determination of the appropriate characteristics, etc.: 4.3.2.12 for the emissivity; 4.3.2.13 for the light transmittance and reflectance; 4.3.2.14 for the solar energy transmittance; EN 1096-2 for the durability of A, B and S coatings; EN 1096-3 for the durability of C and D coatings. 4.3.2 Determination of characteristics of thermally toughened alkaline earth silicate safety glass products 4.3.2.1 General If the thermally toughened glass manufacturer wishes to claim that any performance characteristic is independent of the production equipment used then the factory production control system shall be in accordance with this document including his specific process control conditions
EN 14321-2:2005 (E) 8 4.3.2.2 Safety in the case of fire - Resistance to fire Fire resistance shall be determined and classified in accordance with EN 13501-2. Note EN 357 may be used as a classification reference specific to fire resistant glazed elements. 4.3.2.3 Safety in the case of fire - Reaction to fire Reaction to fire shall be determined and classified in accordance with EN 13501-1. Thermally toughened alkaline earth silicate safety glass products are products/materials that do not require to be tested for reaction to fire (e.g. Products/materials of Classes A1 according to Commission Decision 96/603/EC, as amended 2000/605/EC). 4.3.2.4 Safety in the case of fire - External fire behaviour Where the manufacturer wishes to declare external fire performance (e.g. when subject to regulatory requirements), the product shall be tested and classified in accordance with prEN 13501-5. Note Compliance with this requirement is not possible until a version of prEN 13501-5 later than 2002 becomes available. 4.3.2.5 Safety in use - Bullet resistance: shatter properties and resistance to attack Bullet resistance shall be determined and classified in accordance with EN 1063. 4.3.2.6 Safety in use - Explosion resistance: impact behaviour and resistance to impact Explosion resistance shall be determined and classified in accordance with EN 13541. 4.3.2.7 Safety in use - Burglar resistance: shatter properties and resistance to attack Burglar resistance shall be determined and classified in accordance with EN 356. 4.3.2.8 Safety in use - Pendulum body impact resistance: shatter properties (safe breakablity) and resistance to impact Pendulum body impact resistance shall be determined and classified in accordance with EN 12600. 4.3.2.9 Safety in use - Mechanical resistance: Resistance against sudden temperature changes and temperature differentials The resistance against sudden temperature changes and temperature differentials is a generally accepted value that is given in EN 14321-1 and shall be ensured by compliance with this document. 4.3.2.10 Safety in use - Mechanical resistance: Resistance against wind, snow, permanent load and/or imposed loads of the glass unit The mechanical strength of thermally toughened alkaline earth silicate safety glass is a characteristic value that is given in EN 14321-1 and shall be ensured by compliance with this document. As long as on the concerned construction or building site no part of prEN 13474 is applicable for the design then the current method of determining mechanical resistance in the country of destination shall be applied.
The manufactured or supplied thickness of thermally toughened alkaline earth silicate safety glass shall conform to the ordered thickness.
EN 14321-2:2005 (E) 9 4.3.2.11 Protection against noise - Direct airborne sound reduction The sound reduction indexes shall be determined in accordance with EN 12758. However, the information supplied with the incoming glass may be used as the thermal toughening process does not alter the values. 4.3.2.12 Energy conservation and heat retention - Thermal properties The thermal transmittance value (U-value) shall be determined by calculation in accordance with EN 673 with: emissivity ε : the declared value of the glass manufacturer. If the information is not available, the emissivity shall be determined in accordance with EN 12898. nominal thickness of the glass panes Subject to 5.2.1 the information supplied about the thermal properties of the incoming glass may be used if the thermal toughening process does not alter the values. 4.3.2.13 Energy conservation and heat retention - Radiation properties: Light transmittance and reflectance The light transmittance and reflectance shall be determined in accordance with EN 410.
Subject to 5.2.1 the information supplied about the radiation properties of the incoming glass may be used if the thermal toughening process does not alter the values. 4.3.2.14 Energy conservation and heat retention - Radiation properties: Solar energy characteristics The solar energy transmittance and reflectance shall be determined in accordance with EN 410.
Subject to 5.2.1 the information supplied about the radiation properties of the incoming glass can be used if the thermal toughening process does not alter the values. 4.4 Durability When products conform to the definition of thermally toughened alkaline earth silicate glass as 4.2 then the characteristics’ performances in 4.3.2 are ensured during an economically reasonable working life. The durability of glass products including their characteristics, shall be ensured by the following: Compliance with this European Standard Compliance with instructions from the glass product manufacturer or supplier
The manufacturer shall supply specific installation instructions or make reference to appropriate technical specifications. NOTE The durability of glass products depends on:
building and construction movements due to various actions; building and construction vibrations due to various actions; deflection and racking of the glass support due to various actions; glass support design (e.g. drainage of infiltrated water in the rebate, prevention of direct contact between glass support members and glass); accuracy of glass support and glass support member dimensions;
EN 14321-2:2005 (E) 10 quality of the assembling of glass support members up to a glass support; quality of installation of the glass support into or onto the buildings or constructions; glass support expansion due to adsorbed moisture from the air or other sources; the quality of installation of the glass product into or onto its support. 4.5 Dangerous substances Materials used in products shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the Member State of destination. 5 Evaluation of conformity 5.1 General The evaluation of conformity shall be based on: 1) Factory production control;
This shall include the following: a) Inspection of samples taken at the factory in accordance with a prescribed test plan; b) Initial inspection of the factory and of factory production control; c) Continuous surveillance and assessment of the factory production control. 2) Initial type testing of the product; Note There may be a need to involve a third party, with 1b, 1c, and/or 2, for the purpose of regulatory marking (see Annex ZA). 5.2 Initial type testing of the product (see 5.1, 2) 5.2.1 General All the product’s characteristics shall be initial type tested to verify they are in conformity with the requirements of this document. In addition instead of performing any actual testing, initial type testing may make use of: generally accepted and/or conventional and/or standardised values, in the Clause 2 referenced standards, or in publications that are referred to in these standards; standardised calculation methods and recognised calculation methods in
Clause 2 referenced standards, or in publications that are referred to in these standards; test report(s) on the basis of 5.2.1.2 when made available except for the characteristics listed in 5.2.2. where components are used whose characteristics have already been determined, by the component manufacturer, on the basis of conformity with other product standards, these characteristics need not be reassessed providing they remain unchanged by the manufacturing process; release of dangerous substances may be assessed indirectly by controlling the content of the substance concerned;
EN 14321-2:2005 (E) 11 durability may be assessed indirectly by controlling the production processes according to this document; NOTE 1 Products CE marked in accordance with appropriate harmonised European specifications may be presumed to have the performances stated with the CE marking.
NOTE 2 There may be a need to involve a third party for the purpose of regulatory marking (see Annex ZA). When actual testing is required then the Initial Type Testing (ITT) shall be undertaken on a sample representative of the product taken from direct production or a prototype, any plant and/ or line. Whenever a change occurs in the raw material or the production process (subject to the definition of the family), which would change significantly one or more of the characteristics, the type tests shall be repeated for the appropriate characteristics. 5.2.1.1 Multiple lines/sites If a manufacturer operates one and/or more lines and/or sites, the following can reduce the requirement for multiple Initial Type Testing (ITT): i) The manufacturers’ technical file for a product shall specifically cover all sites and/or lines of the same manufacturer1, ii) The manufacturer shall establish a direct relationship between production control, initial type testing and on-going internal audit testing, iii) The manufacturer has a responsible individual designated to ensure product compliance based on: The operation of a consistent Factory Production Control system on all applicable sites and/or lines, The manufacturer having obtained evidence that shows the product to be consistent, with respect to both product characteristics and intended use characteristics, The manufacturer has in place an internal auditing scheme, including product consistency. 5.2.1.2 Historic Data Tests previously performed in accordance with the provisions of this document (same product, same characteristic(s), same or more onerous test method, sampling method and attestation of conformity) may be taken into account. 5.2.2 Initial type testing of thermally toughened alkaline earth silicate safety glass 5.2.2.1 General To establish if a product conforms to the definition of thermally toughened alkaline earth silicate safety glass, initial type testing shall consist of: a) mechanical strength measurement in accordance with EN 14321-1; b) fragmentation test in accordance with EN 14321-1
1 The terms ‘manufacturer’ and ‘producer’ are understood as being synonyms (see CPD working document NB-CPD/02/019-issued 24 April 2002 – page1)
EN 14321-2:2005 (E) 12 5.2.2.2 Test specimens The test specimens needed for the initial type test shall be processed from float glass according to EN 14321-1 in accordance with this document.
The ‘simplest’ type of edge work specified in the manufacturers production control documentation shall be used. However, if an arrissed edge is used then all other types of edge working are deemed to satisfy. The number of test specimens is as follows: a) For mechanical strength measurement they are given in Table 2a for float glass, Table 2b for coated float glass and Table 2c for enamelled float glass. b) For fragmentation 5 test specimens per thickness are required. Table 2a — Number of test specimens distributed over the product thickness range
Product thickness range
Number of test specimens for the mechanical strength measurement – minimum ≥ 2 – first after minimum ≥ 2 – centre of range ≥ 2 – last before maximum ≥ 2 – maximum ≥ 2 TOTAL ≥ 10 NOTE When the production range consists of: - two thicknesses, the distribution shall be as equal as possible - a single thickness, all specimens are of the same thickness
EN 14321-2:2005 (E) 13
Table 2 b: Number of test specimens of coated float glass, distributed over the product thickness range Emissivity ε of incoming glass product Product thickness range Number of specimens for the mechanical strength measurement 1 ≥ ε > 0,25 Minimum Middle Maximum ≥ 2 ≥ 2 ≥ 2 Total
(min.10) 0,25 ≥ ε > 0,1 Minimum Middle Maximum ≥ 2 ≥ 2 ≥ 2 Total
(min.10)
0,1 ≥ ε Minimum Middle Maximum ≥ 2 ≥ 2 ≥ 2 Total
(min.10) Note 1: Tests according to this table are valid for all coated glasses within the respective emissivity ranges Note 2: Half number of test specimen shall be tested with the coated side in tension and the other half with the uncoated side in tension
Table 2 c: Number of test specimens of enamelled float glass, distributed over the product thickness range Type of surface design Product thickness range Number of specimens for the mechanical strength measurement
Fully enamelled Minimum
≥ 10
Note 1: This table covers all enamelled designs and all produced thicknesses Note 2: Mechanical test undertaken with enamelled surface in tension
NOTE Strength measurements outcomes are expressed in force per unit of area and independent from the thickness. Therefore strength measurements may be performed on a collection of test specimens with different thickness. 5.2.2.3 Test results a) When the mechanical strength is measured, no measured value shall be below that given in Clause 9 of EN 14321-1. However, if one value falls below then the manufacturer shall ensure that the results relate to a 5 % probability of breakage at the lower limit of the 95 % confidence interval.
b) In the fragmentation test, no test specimen shall exhibit a fragmentation assessment that does not meet
8.4 of EN 14321-1:2005.
EN 14321-2:2005 (E) 14 5.2.2.4 Measurement of surface pre-stress The manufacturer may also use surface pre-stress measurement as a means of product control. If this is done then all test specimens shall be measured prior to testing. This will show the relationship between surface pre-stress and mechanical strength/fragmentation. Manufacturers with more than one production line may perform the initial type test on specimens from one line. The outcome value of surface pre-stress measurement may then be used as reference for the other production lines and shall be confirmed by factory production control (FPC). This may also be applied to new production lines. 5.2.3 Initial type testing of characteristic’s performances All characteristics in 4.3.2 shall be subject to initial type testing in accordance with 5.2.1. Optimising thermal toughening settings specifically for one characteristic may affect negatively the optimised settings for a different characteristic. When performance of both characteristics will be declared, the affected characteristic shall be subject to a further type test. 5.3 Factory production control and inspection of samples in accordance with a prescribed test plan (see 5.1, 1a and b) Factory production control means the permanent internal control of production exercised by the manufacturer.
All elements, requirements and provisions adopted by the manufacturer shall be documented in a systematic manner in the form of written policies and procedures. This production control system documentation shall ensure a common understanding of quality assurance and enable the achievement of the required product characteristics and the effective operation of the production control system to be checked. Factory production shall be according to Annex A of this document. NOTE 1 A factory production control system similar to EN ISO 9001 made product specific to this document is deemed to satisfy the requirements of this clause. NOTE 2 There may be a need to involve a third party for the purpose of regulatory marking (see Annex ZA). Annex A of this document also summarises the tests that shall be carried out by the manufacturer as part of the production control in the factory, and as further testing of samples taken at the factory in accordance with a prescribed test plan. If the factory production control includes the optical pre-stress measurement for control purposes, the method shall be correlated. Therefore, prior to any initial type test on mechanical strength/frag
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