Glass in building - Heat strengthened soda lime silicate glass - Part 2: Evaluation of conformity/Product standard

This document covers the evaluation of conformity and the factory production control of flat heat strengthened soda lime silicate glass for use in buildings.
Note: For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.

Glas im Bauwesen - Teilvorgespanntes Kalknatronglas - Teil 2: Konformitätsbewertung/Produktnorm

Diese Europäische Norm umfasst die Konformitätsbewertung und die werkseigene Produktionskontrolle von flachem, teilvorgespanntem Kalk-Natronsilicatglas zur Anwendung im Bauwesen.
ANMERKUNG   Für Glaserzeugnisse mit elektrischer Verkabelung oder Anschlüssen, wie z. B. Alarm- oder Heizungsanwendungen, können andere Richtlinien, z.B. die Niedrigspannungsrichtlinie, gelten.

Verre dans la construction - Verre de silicate sodo-calcique thermoduci - Partie 2: Evaluation de la conformité

Le présent document couvre l'évaluation de la conformité et le contrôle de la production en usine du verre de silicate sodo-calcique thermodurci plan utilisé dans la construction.
NOTE   Pour les produits verriers équipés d'un câblage ou de branchements électriques pour les besoins d'alarme ou de chauffage par exemple, d'autres directives comme par exemple la Directive sur les Courants Faibles peuvent s'appliquer.

Steklo v stavbah - Toplotno utrjeno natrij-kalcijevo silikatno steklo - 2. del: Ovrednotenje skladnosti/standard za izdelek

General Information

Status
Published
Publication Date
05-Oct-2004
Withdrawal Date
30-Jul-2006
Technical Committee
CEN/TC 129 - Glass in building
Current Stage
9060 - Closure of 2 Year Review Enquiry - Review Enquiry
Start Date
02-Dec-2017
Completion Date
02-Dec-2017

Relations

Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026

Overview

EN 1863-2:2004 - "Glass in building - Heat strengthened soda lime silicate glass - Part 2: Evaluation of conformity/Product standard" (CEN) specifies how manufacturers evaluate conformity and operate factory production control for flat heat strengthened soda lime silicate glass used in buildings. It complements EN 1863-1 (definition and description) and supports compliance with applicable EU directives (see informative Annex ZA). The standard addresses product description, testing, inspection, marking and surveillance needed to demonstrate consistent performance and regulatory conformance.

Key topics and technical requirements

  • Product description: Manufacturers must prepare and maintain a normative product description (product families, process conditions, coatings affected by heat strengthening).
  • Conformity with EN 1863-1: Products must meet the definition and requirements of heat strengthened soda lime silicate glass from Part 1.
  • Determination of characteristics: Specifies which glass substrate properties apply (density, Young’s modulus, refractive index, emissivity, transmittance, etc.) and identifies exceptions affected by heat strengthening (bending strength, thermal shock resistance).
  • Initial type testing: Requirements for initial type testing and test reports to demonstrate performance and durability.
  • Factory production control (FPC): Detailed FPC system requirements (Annex A) including organisation, control system, inspection and testing tables, and handling of significant change.
  • Inspection and surveillance: Initial factory inspection, continuous surveillance, sampling plans and provisions for third‑party involvement (Annex C).
  • Testing methods: Informative Annex B describes factory control tests such as four‑point bending strength, optical surface pre‑stress measurements and fragmentation testing.
  • Durability and dangerous substances: Requirements addressing long‑term behaviour, coated glass durability (referencing EN 1096 series) and handling of hazardous substances.
  • Marking & labelling: Product marking, characteristics reporting (characteristics/performance identification paper) and information disclosure rules.

Practical applications and users

  • Manufacturers of heat strengthened soda lime silicate glass - to establish compliant FPC, perform initial type testing and document product families.
  • Quality control and testing laboratories - to apply test methods (e.g., bending, fragmentation, optical pre‑stress) and produce test reports.
  • Specifiers, façade engineers and architects - to assess product performance, durability and suitability for building applications.
  • Certification bodies and regulators - to perform inspections, surveillance and assess conformity to EU Construction Products requirements.
  • Glazing fabricators and installers - for verifying supplied glass characteristics and traceability documentation.

Related standards

  • EN 1863-1 (definition/description)
  • EN 572 series (soda lime silicate glass basics)
  • EN 1096 series (coated glass)
  • EN 12600 (impact/pendulum test)
  • EN 410, EN 673 (optical/thermal properties)
  • EN 13501-1/2 (reaction/resistance to fire)

Frequently Asked Questions

EN 1863-2:2004 is a standard published by the European Committee for Standardization (CEN). Its full title is "Glass in building - Heat strengthened soda lime silicate glass - Part 2: Evaluation of conformity/Product standard". This standard covers: This document covers the evaluation of conformity and the factory production control of flat heat strengthened soda lime silicate glass for use in buildings. Note: For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.

This document covers the evaluation of conformity and the factory production control of flat heat strengthened soda lime silicate glass for use in buildings. Note: For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.

EN 1863-2:2004 is classified under the following ICS (International Classification for Standards) categories: 81.040.20 - Glass in building. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 1863-2:2004 has the following relationships with other standards: It is inter standard links to EN 572-1:2012+A1:2016, EN 13541:2012, EN 1096-3:2012, EN 572-5:2012, EN 356:1999, EN 12758:2019+A1:2023, EN 12898:2019, EN 13501-2:2023, EN 12600:2002, EN 673:2024, EN 572-4:2012, EN 1096-1:2012, EN 410:2011, EN 13501-1:2018, EN 1063:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 1863-2:2004 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/135. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

EN 1863-2:2004 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Glass in building - Heat strengthened soda lime silicate glass - Part 2: Evaluation of conformity/Product standardSteklo v stavbah - Toplotno utrjeno natrij-kalcijevo silikatno steklo - 2. del: Ovrednotenje skladnosti/standard za izdelekVerre dans la construction - Verre de silicate sodo-calcique thermoduci - Partie 2: Evaluation de la conformitéGlas im Bauwesen - Teilvorgespanntes Kalknatronglas - Teil 2: Konformitätsbewertung/Produktnorm81.040.20Steklo v gradbeništvuGlass in buildingICS:SIST EN 1863-2:2005enTa slovenski standard je istoveten z:EN 1863-2:200401-marec-2005SIST EN 1863-2:2005SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1863-2
October 2004 ICS 81.040.20
English version
Glass in building - Heat strengthened soda lime silicate glass - Part 2: Evaluation of conformity/Product standard
Verre dans la construction - Verre de silicate sodo-calcique thermodurci - Partie 2: Evaluation de la conformité
Glas im Bauwesen - Teilvorgespanntes Kalknatronglas - Teil 2: Konformitätsbewertung/Produktnorm This European Standard was approved by CEN on 27 May 2004.
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 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
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 STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1863-2:2004: E

Factory production control.19 A.1 Factory Production Control Requirements.19 A.1.1 General.19 A.1.2 Organisation.19 A.1.3 Control system.19 A.2 Marking.20 A.3 Inspection and testing tables of heat strengthened soda lime silicate glass production.21 A.3.1 Information on Table A.1.21 A.3.2 Use of proxy testing.21 Annex B (informative)
Tests for factory production control.25 B.1 Strength measurement.25 B.1.1 Four point bending strength test.25 B.1.2 Optical surface pre-stress measurement.25 B.2 Fragmentation test.26 B.2.1 Requirements.26 B.2.2 Test method.26 Annex C (informative)
Provisions for voluntary involvement of third party(ies).27

Annex ZA (informative)
Clauses of this European Standard addressing the provisions of EU Construction Products Directive.28 Bibliography.38

1 Scope This document covers the evaluation of conformity and the factory production control of flat heat strengthened soda lime silicate glass for use in buildings.
Note: For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.
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 572 – 1, Glass in building - Basic soda lime silicate glass products – Part 1: Definition and general physical and mechanical properties EN 572 – 2, Glass in building - Basic soda lime silicate glass products – Part 2: Float glass EN 572 – 4, Glass in building - Basic soda lime silicate glass products –Part 4: Drawn sheet glass EN 572 – 5, Glass in building - Basic soda lime silicate glass products – Part 5: Patterned glass 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 1863-1:2000, Glass in building – Heat strengthened soda lime silicate glass - Definition and description 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, Glass in building - Design of glass panes

data from fire exposure roof tests EN 13541, Glass in building - Security glazing - Testing and classification of resistance against explosion pressure 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1863-1:2000 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 references 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 heat strengthened 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 heat strengthened 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 1863 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 heat strengthening 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. 4.2 Conformity with the definition of heat strengthened soda lime silicate glass Products shall conform to the definition and fulfil the requirements of heat strengthened soda lime silicate glass as defined in EN 1863-1. 4.3 Determination of the characteristic’s performances
4.3.1 Characteristics of heat strengthened soda lime silicate glass 4.3.1.1 General The characteristics of heat strengthened soda lime silicate glass are in general those of the glass substrate (see 4.3.1.2). 4.3.1.2 Characteristics of the soda lime silicate glass panes used for the production of heat strengthened soda lime silicate glass Panes shall be made of soda lime silicate glass according to EN 572-1, EN 572-2, EN 572-4, EN 572-5. The panes may be coated according to EN 1096 -1, EN 1096-2, EN 1096-3 and/or enamelled according to EN 1863-1. For the characteristics listed in Table 1, for the soda lime silicate glass panes, general accepted values or calculated values shall be used.
Since the majority of the characteristics of Table 1 are not changed significantly by the heat-strengthening process, they shall be used for heat strengthened soda lime silicate glass. The exceptions shall be the characteristic bending strength (fg,k) and the resistance against sudden temperature changes and temperature differentials.

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 heat strengthening changes their radiometric properties the manufacturer shall refer to the following for the determination of the appropriate characteristics, etc.:  4.3.2.11 for the emissivity;  4.3.2.12 for the light transmittance and reflectance;  4.3.2.13 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 heat strengthened soda lime silicate glass products
If the heat strengthened 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. 4.3.2.1 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. 4.3.2.2 Safety in the case of fire - Reaction to fire Reaction to fire shall be determined and classified in accordance with EN 13501-1. Heat strengthened soda lime silicate 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) 4.3.2.3 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 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. 4.3.2.4 Safety in use - Bullet resistance: shatter properties and resistance to attack Bullet resistance shall be determined and classified in accordance with EN 1063. 4.3.2.5 Safety in use - Explosion resistance: impact behaviour and resistance to impact Explosion resistance shall be determined and classified in accordance with EN 13541. 4.3.2.6 Safety in use - Burglar resistance: shatter properties and resistance to attack Burglar resistance shall be determined and classified in accordance with EN 356. 4.3.2.7 Safety in use - Pendulum body impact resistance: shatter properties (safe breakability) and resistance to impact Pendulum body impact resistance shall be determined and classified in accordance with EN 12600. 4.3.2.8 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 1863-1 and shall be ensured by compliance with this document. 4.3.2.9 Safety in use - Mechanical resistance: Resistance against wind, snow, permanent load and/or imposed loads of the glass unit The mechanical resistance of heat strengthened soda lime silicate glass is a characteristic value that is given in EN 1863-1 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 then the current method of determining mechanical resistance in the country of destination shall be applied.
The manufactured or supplied thickness of heat strengthened soda lime silicate glass shall conform to the ordered thickness.

The manufacturer shall supply specific installation instructions or make reference to appropriate technical specifications. Note 1: 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;  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 Evaluation of conformity in accordance with this document shall be as a result of FPC and ITT in accordance with this document. 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;

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 more than one line and/or site, 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 direct relationship between production control, initial type testing and on-going internal audit testing, iii) The manufacturer shall have 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.
1 The terms ‘manufacturer’ and ‘producer’ are understood as being synonyms (see CPD working document NB-CPD/02/019-issued 24 April 2002 – page1)

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 heat strengthened soda lime silicate glass 5.2.2.1 General To establish if a product conforms to the definition of heat strengthened soda lime silicate glass, initial type testing shall consist of: a) mechanical strength measurement in accordance with EN 1863-1; b) fragmentation test in accordance with EN 1863-1 5.2.2.2 Test specimens The test specimens needed for the initial type test shall be processed from float glass according to EN 572-1 and EN 572-2 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.

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 practical - a single thickness, all specimens are of the same thickness
Table 2 b: Number of test specimens of coated 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 to 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 measurement outcomes are expressed in force per unit of area and are therefore independent of the thickness. Hence strength measurements may be performed on a collection of test specimens with different thicknesses. 5.2.2.3 Test results  When the mechanical strength is measured, no measured value shall be below that given in Clause 9 of EN 1863-1:2000. 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.
 In the fragmentation test, no test specimen shall exhibit a fragmentation pattern that does not meet Clause 8.5 of EN 1863-1:2000 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. 5.2.2.5 Heat strengthened patterned glass Initial type testing of heat strengthened patterned glass may not be undertaken as a result of the wide variety of patterned surfaces of patterned glass in accordance with EN 572-5. Compliance of heat strengthened patterned glass shall be ensured by sampling during product control given in Annex A – Table A.1 – 3.1.4 together with either 3.1.5 or 3.1.6. 5.2.3 Initial type testing of characteristic’s performances
All characteristics in 4.3.2 shall be subject to initial type tests in accordance with Clause 5.2.1. Optimising heat-strengthening 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.

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 control 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 summarizes 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 according to 5.2.2.1, all test specimens shall be measured to determine their optical pre-stress. Outcomes shall be used as reference values during factory production control. 5.4 Initial inspection of factory and of factory production control (see 5.1, 1c) The initial inspection of the factory and of the factory production control shall cover the parameters listed in Table 3 in conjunction with Annex A.
Note: There may be a need to involve a third party for the purpose of regulatory marking (see Annex ZA).

Table 3: Characteristics of interest for the Factory Production Control
Nr
Characteristic
Interested parameter related to the characteristic
For details, refer to
A
Resistance to fire Reaction to fire External fire behaviour
- checking incoming glass - checking process control - product control after heat strengthening
- labelling outgoing glass product
Annex A
B
Release of dangerous substances
- checking incoming materials
Annex A
C
Bullet resistance Explosion resistance Burglar resistance Pendulum body impact resistance Resistance against sudden temperature changes and temperature differentials Wind, snow, permanent and imposed load resistance of the glass unit
- checking incoming glass - checking process control - product control after heat strengthening - labelling outgoing glass product
Annex A
D
Direct airborne sound reduction Thermal properties Radiation properties: – light transmittance and reflection – solar energy characteristic
- checking incoming glass - checking process control - product control after heat strengthening
- labelling outgoing product
Annex A
5.5 Continuous surveillance and assessment of the factory production control (see 5.1, 1c) The continuous surveillance and assessment of the factory production control shall cover the parameters listed in Table 3 in conjunction with Annex A.
Note: There may be a need to involve a third party for the purpose of regulatory marking (see Annex ZA). The frequency of production surveillance shall be twice per year for new production facilities or for facilities that do not already have an established factory production control system in accordance with this document.

When a major non-conformance is recorded, the inspection shall be repeated within two month. The frequency of production surveillance shall return to, or remain at twice a year. When the repeated inspection also results in a major non-conformance, then the production shall be subject within two months to a repeated initial inspection of the factory and of the factory production control together with a surveillance inspection. When this repeated initial inspection and surveillance inspection also results in a major non-conformance, then the products are considered as no longer conforming to this document. 6 Marking and/or labelling 6.1 General All voluntary marking and/or labelling shall comply with Annex C.3.
Care shall be taken to ensure that any voluntary marking and/or labelling does not cause confusion with respect to the mandatory requirements. Note: All marking and/or labelling of product to demonstrate compliance with the regulatory requirement is detailed in Annex ZA. 6.2 Product marking The heat strengthened soda lime silicate glass product shall be marked in accordance with Clause 11 of EN 1863 – 1:2000. 6.3 Product characteristics
The manufacturer or his agent shall organise a system of references that allows for the following:  identification of exactly which characteristics have to be assessed (see Clause 4.3.2);  those characteristics that will be assessed;  values, classes, categories, etc. that have been determined for those characteristics.
This system shall be documented as part of the evaluation of conformity.
6.4 “Characteristics/performance identification paper” The manufacturer shall prepare a “characteristics/performance identification paper” based on the information collected on the product characteristics (see 6.3). This document shall be part of the manufacturers technical file and is the basis for the accompanying information as required for regulatory purposes. The "characteristics/performance identification paper" can be a catalogue in any media format (paper, disk, website, etc.), always identifiable by the reference that accompanies the marking with the product. The catalogue shall contain the values or classes of the characteristics for which a performance is declared. If no performance is declared, an indication of no performance determined (NPD) shall be made. Note 1: The conditions of use of NPD are given in Annex ZA. Note 2: The catalogue should not contain any information other than that relevant to the “characteristics/performance identification paper”.

Annex A (normative)
Factory production control A.1 Factory Production Control Requirements A.1.1 General The factory production control system shall consist of procedures, regular inspections and tests and/or assessments and the use of the results to control incoming materials or components, equipment, the production process and the product.
Note: An FPC system conforming with the requirements of EN ISO 9001 and made specific to the requirements of this document is deemed to satisfy the requirements of this document. A.1.2 Organisation A.1.2.1 Responsibility and authority The responsibility, authority and the interrelation of all personnel who manage, perform and verify work affecting conformity shall be defined, particularly for personnel who have the organizational freedom and authority to: a) initiate action to prevent the occurrence of product non-conformity; b) identify and record any product non-conformances. A.1.2.2 Management representative for factory production control The manufacturer shall appoint a management representative who, irrespective of other responsibilities, shall have defined authority and responsibility for ensuring that the requirements of this document are implemented and maintained. A.1.2.3 Management review The production control system shall be reviewed by the manufacturer's management at appropriate intervals in accordance with the manufacturer’s documented control system to ensure its continuing suitability and effectiveness. Records of such reviews shall be maintained for a minimum period of five years. A.1.3 Control system
A.1.3.1 General The manufacturer shall establish and maintain a documented system as a means of ensuring that the product conforms to EN 1863-1. The following requirements shall be fulfilled.

A.1.3.4 Test equipment Calibration of test equipment necessary for factory production control shall be documented. Note: The precision of calibration required is implied by the accuracy of the test method and tolerances specified. A.1.3.5 Inspection and testing Clause A.3 designates the inspections and tests by means of tables. The requirements and records shall be normative.
Frequencies shall be regarded as a minimum frequency. A.2 Marking The manufacturer shall establish, document and maintain procedures for marking of the products. The product shall be marked in accordance with the established documents. For tracing purposes, the manufacturer shall establish and maintain the records required in Clause A.3.

A.3 Inspection and testing tables of heat strengthened soda lime silicate glass production A.3.1 Information on Table A.1 Table A.1 consists of three parts:  section 1: Material control  section 2: Production Control  section 3 : Product control When a manufacturing process is such that one or more of the listed inspections or tests are not applicable or physically not practical, the concerned inspection or test may be ignored. The inspections and/or tests on incoming materials shall be carried out before use. In the case of non-conforming materials, action shall be taken so that:  non-conforming raw materials cannot be used  non-conforming products cannot be delivered. The required records in Table A.1 may be any document, e.g. order documents, production documents, logbook, etc., as described in the FPC procedures and associated documentation. For those criteria where no record is required this situation shall only apply until a complaint regarding that criteria is received. Records shall subsequently be kept to show that corrective action has been successful. The machinery
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