BRL-K629/03 Date 01-02-2012 Evaluation Guideline for the Kiwa product certificate for Backflow protection devices Family E, Types A, B, C and D
Preface Kiwa This (BRL) has been drawn up by Kiwa's Board of Experts (C.W.K.) in which parties interested in the subject of drinking water systems are represented. This Board of Experts also supervises the execution of the certification and where necessary requires the Evaluation Guideline to be revised. All references to "Board of Experts" in this Evaluation Guideline pertain to the above mentioned Board of Experts. This Evaluation Guideline will be used by Kiwa in conjunction with the Kiwa Regulations for Product Certification. These Regulations detail the method employed by Kiwa for conducting the necessary investigations prior to issuing the product certificate and the method of external control. This evaluation guideline will be reviewed at least every five years by the Board of Experts, but at the latest before February 1, 2017. 2012 Kiwa Nederland B.V. Sir W. Churchilllaan 273 Postbus 70 2280 AB RIJSWIJK Tel. 070 414 44 00 Fax 070 414 44 20 info@kiwa.nl www.kiwa.nl 2012 Kiwa N.V. All rights reserved. No part of this book may be reproduced, stored in a database or retrieval system, or published, in any form or in any way, electronically, mechanically, by print, photo print, microfilm or any other means without prior written permission from the publisher. The use of this Evaluation Guideline by third parties, for any purpose whatsoever, is only allowed after a written agreement is made with Kiwa to this end. Validation This evaluation guideline has been validated by Kiwa on February 1, 2012. 2012 Kiwa Nederland B.V. - 2 - February 1, 2012
Contents 1. Introduction 5 1.1 General 5 1.2 Types and scope of application 5 1.3 Acceptance of test reports provided by the supplier 5 1.4 Quality declaration 6 2. Terms and definitions 7 2.1 Definitions 7 3. Procedure for granting the quality declaration 8 3.1 Pre-certification tests 8 3.2 Granting the quality declaration 8 4. Product requirements and test methods. 9 4.1 General 9 4.2 Product requirements and determination method 9 4.3 Detailed specifications 9 4.4 Materials 9 5. Marking 12 5.1 General 12 5.2 Certification mark 12 6. Testing methods 13 6.1 General 13 7. Requirements in respect of the quality systems 14 7.1 Manager of the quality system 14 7.2 Internal quality control/quality plan 14 7.3 Procedures and working instructions 14 8. Summary of tests and inspections 15 8.1 Test matrix 15 8.2 Inspection of the quality system. 16 9. Agreements on the implementation of certification 17 9.1 General 17 9.2 Certification staff 17 9.3 Report Pre-certification tests 18 9.4 Decision for granting the certificate 18 2012 Kiwa Nederland B.V. - 3 - February 1, 2012
9.5 Outlay of quality declaration 18 9.6 Nature and frequency of external inspections 18 9.7 Interpretation of requirements 18 10. Titles of mentioned documents 19 11. I Model certificate 20 2012 Kiwa Nederland B.V. - 4 - February 1, 2012
1. Introduction 1.1 General This evaluation guideline includes all relevant requirements which are adhered to by Kiwa as the basis for issuance and maintenance of a product certificate for check valves against pollution, family E, types A, B, C and D 1. This BRL replaces BRL-K629/02 from November 23, 2005. For the performance of its certification work, Kiwa is bound to the requirements included in NEN-EN 45011, laid down in the chapter "Conditions and procedures for granting, maintaining, extending, suspending and withdrawing certification". 1.2 Types and scope of application The products are intended for the following use: The under 1.2.1 mentioned types check valves are meant as a device to prevent backflow. Check valves with a nominal diameter smaller then or equal 50 mm are intended for application in drinking water installations with a maximum constant temperature of 65 C and a with a maximum of one hour with a water temperature of 90 C. Check valves with a nominal diameter larger then 50 mm are intended for water temperatures till 65 C only. Check valves are intended for applications in drinking water installations with a maximum operating pressure of 1000 kpa. 1.2.1 Types This Evaluation Guideline includes the following types: Family E, type A, controllable check valve with verification connection Family E, type B, non-controllable check valve, including check valve cartridge Family E, type C, controllable double check valve with verification connection Family E, type D, non-controllable double check valve, including check valve cartridge 1.2.2 Scope of application The types of check valves mentioned in point 1.2.1 are meant as backflow protection device. Check valves with a nominal diameter smaller than or equal to 50 mm are meant for application in domestic water supply systems with a maximum constant water temperature of 65 C and with a maximum water temperature of 90 C for up to maximum one hour. Check valves with a nominal diameter of more than 50 mm are only meant for water temperatures up to 65 C. Check valves are meant for application in domestic water supply systems with a work pressure of up to 100kPa. 1.3 Acceptance of test reports provided by the supplier If the supplier provides reports from test institutions or laboratories to prove that the products meet the requirements of this Evaluation Guideline, the supplier will have to prove that these reports have been drawn up by an institution that complies with the applicable accreditation standards, namely: NEN-EN-ISO/IEC 17025 for laboratories; NEN-EN-ISO/IEC 17020 for inspection bodies; NEN-EN 45011 for certification bodies that certify products. This requirement will be considered to have been fulfilled when a certificate of accreditation can be shown, either issued by the Board of Accreditation (RvA) or one of 1 Hereinafter called check valves 2012 Kiwa Nederland B.V. - 5 - February 1, 2012
the institutions with which the RvA has entered into an agreement of mutual acceptance. This accreditation shall refer to the examination as required in this BRL. If no certificate of accreditation can be shown, the certifying body will verify whether the accreditation standard has been fulfilled, will repeat the inspection itself or will have it repeated. 1.4 Quality declaration Quality declarations to be issued based on this BRL, will be referred to as Kiwa product certificate. A model of this quality declaration is included with this BRL as an Annex. 2012 Kiwa Nederland B.V. - 6 - February 1, 2012
2. Terms and definitions 2.1 Definitions In this Evaluation Guideline the following terms and definitions are applicable. Evaluation Guideline: the agreements made by the Board of Experts on the subject of certification. Board of Experts: the Board of Experts. "CWK". Supplier: the party that is responsible for ensuring that the products meet and continue to meet the requirements on which the certification is based. IQC scheme: a description of the quality inspections carried out by the supplier as part of his quality system. Product requirements: requirements made specific by means of measures or figures, focusing on (identifiable) characteristics of products and which contain a limiting value to be achieved, which limiting value can be calculated or measured in an unequivocal manner. Pre-certification tests: tests in order to ascertain that all the requirements recorded in the Evaluation Guideline are met. Inspection tests: tests carried out after the certificate has been granted in order to ascertain that the certified products continue to meet the requirements recorded in the Evaluation Guideline. Observation The testing matrix resumes which test will be carried out by Kiwa for pre-certification and inspection, and will specify the frequency of the inspection tests. Product certificate: a document in which Kiwa declares that a product, on delivery, may be deemed to comply with the product specification recorded in the product certificate. Drinking water: (source NEN 1006).water intended for drinking, cooking or food preparation, or other domestic purposes. 2012 Kiwa Nederland B.V. - 7 - February 1, 2012
3. Procedure for granting the quality declaration 3.1 Pre-certification tests The pre-certification tests to be performed are based on the (product) requirements as included in this Evaluation Guideline, including the test methods, and contain, depending on the nature of the product to be certified: (Sample) type testing to determine whether the products comply with the product and/or functional requirements; Production Process Assessment; Assessment of the quality system and the IQC scheme; Assessment on the presence and functioning of the remaining procedures. 3.2 Granting the quality declaration After finishing the pre-certification tests, the results will be presented to the person deciding on granting the certificate. This person evaluates the results and decides whether the certificate can be granted or additional data and/or tests are necessary. 2012 Kiwa Nederland B.V. - 8 - February 1, 2012
4. Product requirements and test methods. 4.1 General This chapter describes the requirements the check valves must comply with, as well as the testing methods to determine if requirements are being fulfilled. These requirement will form part of the technical specifications of the products, which will be included in the product certificate. 4.2 Product requirements and determination method The requirements for check valves and the determination methods are laid down in: Number Title Date of publication EN13959 Check valves against pollution - October 2004 DN 6 to DN 250 inclusive, family E, types A, B, C and D 4.3 Detailed specifications In addition to what is laid down in EN13959 the following applies: 4.4 Materials 4.4.1 Requirements to prevent harmful effects to the quality of drinking water Products and materials that (might) enter into contact with drinking water or hot tap water shall not emit substances in quantities that might be harmful for the health of the consumer or otherwise affect the quality of the drinking water. To that end, the products or materials must comply with the toxicological, microbiological and organoleptic requirements laid down in the Regulation Materials and chemical products drinking and tap water supply, presently in force (published in the Government Gazette). This means that the procedure to obtain a recognized quality declaration, as referred to in the Regulation in force, must have been completed with positive results. Products or materials that have a quality declaration*, issued by, for example, a foreign certification institute, may be used in the Netherlands as well, provided this quality certification has been declared equivalent to the quality declaration as referred to in the Regulation by the Minister. A quality declaration issued by an independent certification institute in a member state of the European Union different from the Netherlands or in another state that is a party to the Agreement with regards to the European Economic Space, is equivalent to a recognized quality declaration, insofar as per the Minister s judgement the first mentioned quality declaration proves that compliance is given to at least equivalent requirements as referred to in the Regulation Materials and chemical products for drinking and hot tap water supply. 4.4.2 Chemical and mechanical requirements 4.4.2.1 Materials for the body NEN-EN 1503-1 Materials for the home Part 1: Types of steel NEN-EN 1503-3 Materials for the home Part 2: Types of cast iron NEN-EN 1503-4 Materials for the home Part 4: Copper alloys 2012 Kiwa Nederland B.V. - 9 - February 1, 2012
4.4.2.2 Copper-copper alloys NEN-EN 1982 Copper and copper alloys-ingots and castings NEN-EN 12163 Copper and copper alloys-bars for general use NEN-EN-12164 Copper and copper alloys-bars for metal removing operations NEN-EN 12420 Copper and copper alloys-forgings Observation: Copper alloys containing lead shall not contain more than 3% lead. 4.4.2.3 Grey cast iron Grey cast iron must comply at least with EN-GJL-250, in accordance with NEN-EN 1561. 4.4.2.4 Ductile cast iron Ductile cast iron must comply with EN-GJS-400-18, EN-GJS-5007 or EN-GJS-600-3, in accordance with NEN-EN 1663. 4.4.2.5 Stainless steel Stainless steel must contain at least 13% chrome, in accordance with NEN-EN 10088-1. 4.4.2.6 Rubber for elastic sealing systems Rubber must comply with the requirements as laid down in Kiwa Evaluation Guideline BRL-K2013 with respect to the influence on drinking water and the physical and mechanical properties. Natural rubber and isoprene rubber (IR) are not allowed. 4.4.2.7 Other materials In case other materials than the above mentioned have been used, these must be equivalent and fit for the purpose. 4.4.3 Corrosion resistance The used materials that will enter into contact with drinking water must be made of corrosion resistant material or must be protected against corrosion. They must not cause corrosion between them. 4.4.3.1 Anti corrosive protection layers For anti-corrosive protection layers that enter into contact with drinking water, an ATA 1 must have been issued. The installed anti-corrosive protection layers and paints must comply, insofar applicable, with Kiwa Evaluation Guideline BRL-K759 Coating systems for drinking water systems. Remark: In case a coating included in a product certificate issued by Kiwa as per BKL-K759, this requirement will be deemed to have been fulfilled. The installation of anti-corrosive protection layers that enter into contact with drinking water must at least comply with the following articles, in accordance with BRL-K746, The application of coating systems for drinking water applications. 2.3.2 surface; 2.3.6 removal of abrasives; 1 ATA = Certificate on technical aspects issued by Kiwa 2012 Kiwa Nederland B.V. - 10 - February 1, 2012
2.5.2 exterior; 2.5.3 thickness; 2.5.6 resistance against penetration/hardness test as per ISO 868. Remark: In case the coating process is included in a process certificate issued by Kiwa in accordance with BRL-K746, it will be deemed that this requirement has been fulfilled. 2012 Kiwa Nederland B.V. - 11 - February 1, 2012
5. Marking 5.1 General The products have to be clearly marked with the following indelible marks and indications, in accordance with article 6 of EN13959. 5.2 Certification mark After concluding a Kiwa certification agreement, the certified products shall be indelibly marked with the certification mark KIWA. In the case of check valve cartridges the abbreviation KK must be marked indelibly on the body. 2012 Kiwa Nederland B.V. - 12 - February 1, 2012
6. Testing methods 6.1 General No additional testing methods have been established for these products. 2012 Kiwa Nederland B.V. - 13 - February 1, 2012
7. Requirements in respect of the quality systems This chapter contains the requirements which have to be met by the supplier's quality system. 7.1 Manager of the quality system Within the supplier's organizational structure, an employee who will be in charge of managing the supplier's quality system must have been appointed 7.2 Internal quality control/quality plan The supplier shall have an internal quality control scheme (IQC scheme) which is applied by him. The following must have been demonstrably recorded in this IQC scheme: which aspects are checked by the producer; according to which methods such inspections are carried out; how often these inspections are carried out; in what way the inspection results are recorded and kept. This IQC scheme should be at least an equivalent derivative of the model IQC scheme mentioned in the addendum. 7.3 Procedures and working instructions The supplier must be able to submit the following: procedures for: o dealing with products showing deviations; o corrective actions to be taken if nonconformities are found; o dealing with complaints about products and/or services delivered; the working instructions and inspection forms used. 2012 Kiwa Nederland B.V. - 14 - February 1, 2012
8. Summary of tests and inspections This chapter contains a summary of the following tests and inspections to be carried out in the event of certification: Pre-certification tests Inspection of product requirements Inspection of the quality system. The frequency of test inspections carried out by Kiwa is also indicated. 8.1 Test matrix Description of requirement Article BRL Precertification Test within the scope of Supervision by Kiwa after granting of certificate 1 Control Material requirements Toxicological requirements 4.4.1 X X Chemical and mechanical requirements 4.4.2 X X Design and presentation Corrosion resistance 4.4.3 X X Certification mark General 5.1 X X Certification mark 5.2 X X Product requirements NEN-EN 13959 Marking and technical documents 6 X X Overall length and diameter of check valves 8.1 X X End connections 8.2 X X Test and drain ports 8.3 X X Other characteristics 8.4 X X Materials 9.1 X X Nature of materials 9.2 X X High velocity 11.1 X Flow rate 11.2 X Mechanical strength of the body 11.3 X Bending moment 11.4 X 1 Administrative testing 2012 Kiwa Nederland B.V. - 15 - February 1, 2012
Description of requirement Article BRL Precertification Test within the scope of Supervision by Kiwa after granting of certificate 1 Control Pressure tightness under a low reverse pressure differential Pressure tightness under a high reverse pressure and verification that the check valve has not jammed Pressure differential at which the check valve closes Compatibility with products used for disinfection of networks 11.5 X 11.6 X 11.7 X X 11.8 X Endurance 11.9 X Pressure tightness under a low reverse pressure differential Pressure tightness under a high reverse pressure and verification that the check valve has not jammed Pressure differential at which the check valve closes 11.10 X X 11.11 X X 11.12 X X Resistance to corrosion 12.1 X Acoustic characteristics 12.2 X 1) In case of significant changes of the product or production process, compliance with the product to the performance requirements must be determined once again. 8.2 Inspection of the quality system. The manufacturer's quality system will be evaluated by Kiwa. This inspection will contain at least those aspects mentioned in the Kiwa Regulations for Product Certification. For the frequency of audits see 9.6 2012 Kiwa Nederland B.V. - 16 - February 1, 2012
9. Agreements on the implementation of certification 9.1 General Besides the requirements included in this Evaluation Guideline, the general rules for certification as included in the Kiwa Regulations for Product Certification apply as well. These rules are in particular: The general rules for conducting the pre-certification tests, to be distinguished in: o the way suppliers will be informed about a pending application, o how the tests are conducted, o the decision to be made as a result of the pre-certification tests, The general rules for conducting inspections and the aspects to be audited, The measures to be taken by Kiwa in case of nonconformities; Measures to be taken by Kiwa in case of improper use of certificates, certification marks, pictograms and logos, Terms for termination of the certificate, The possibility to lodge an appeal against decisions made or measures taken by Kiwa. 9.2 Certification staff The staff involved in the certification may be sub-divided into: Certification assessors (engineers/experts): they are in charge of carrying out the pre-certification tests and assessing the site assessors' reports; Site Assessors (Inspectors): they are in charge of carrying out external inspections at the suppliers' works; Decision makers: they are in charge of making decisions in connection with the pre-certification tests carried out, continuing the certification in connection with the inspections carried out and making decisions on the need to take corrective actions. Qualification requirements The Board of Experts has established the following qualification requirements for the design of this BRL: EN45011 Certification Assessor Site Assessor Decision maker Education - General Education Specific Experience general Technical higher-level professional education Internal training on certification and Kiwa policy Training in auditing skills for BRL relevant technical education specific studies and training (know how and skills) 1 year of relevant work experience with a least 4 pre certification tests of which one carried out independently under supervision Intermediate level professional education Internal training on certification and Kiwa policy Training in auditing skills for BRL relevant technical education specific studies and training (know how and skills) 1 year of relevant work experience with a least 4 inspections of which one carried out independently under supervision. Higher level professional education Internal training on certification and Kiwa policy Training in auditing skills not applicable unless specific requirements have been specified by BoE. 4 years of relevant work experience with at least 1 year in certification. 2012 Kiwa Nederland B.V. - 17 - February 1, 2012
EN45011 Certification Assessor Site Assessor Decision maker Experience specific Detailed knowledge of the BRL and 4 certification tests carried out on the specific BRL or related BRLs. Detailed knowledge of the BRL and 4 certification tests carried out on the specific BRL or related BRLs. general knowledge of the specific BRL. The level of education and the experience of the certification staff involved must be demonstrably recorded. Qualification The qualification of the certification staff shall be demonstrated by means of assessing the education and experience to the above mentioned requirements. In case staff is to be qualified on the basis of deflecting criteria, written records shall be kept. The authority to qualify staff rests with the: Decision makers: qualification of certification experts and inspectors, Kiwa Management: qualification of decision makers. 9.3 Report Pre-certification tests Kiwa records the results of the pre-certification tests in a report. This report shall comply with the following requirements: Completeness: the reports gives a verdict about all requirements included in the Evaluation Guideline; Traceability: the findings on which the verdicts have been based shall be recorded in a traceable manner; Basis for decision: the decision maker must be able to base his decision on the findings included in the report. 9.4 Decision for granting the certificate The decision for granting the certificate shall be made by a qualified decision maker who has not been involved in the pre-certification tests. The decision shall be recorded in a traceable manner. 9.5 Outlay of quality declaration The product certificate shall be in accordance with the model included as an annex. 9.6 Nature and frequency of external inspections The verification body shall carry out Audits at the supplier s at regular intervals to verify if the supplier is complying with his obligations. The Board of Experts decides on the frequency of inspections. At the time this BRL entered into force, the frequency of inspection visits was determined on 2 per year. Inspections shall at least refer to: The suppliers IQC scheme and the results obtained from inspections carried out by the supplier; The correct way of marking certified products; Compliance with required procedures. The results of each inspection shall be recorded in a traceable manner in a report 9.7 Interpretation of requirements The Board of Experts may record the interpretation of requirements of this Evaluation Guideline in a single separate interpretation document. 2012 Kiwa Nederland B.V. - 18 - February 1, 2012
10. Titles of mentioned documents BRL-K 746 BRL-K 759 BRL-K 775 BRL-K 2013 NEN-EN 1488 NEN-EN 1503-1 NEN-EN 1503-3 NEN-EN 1503-4 NEN-EN 1561 NEN-EN 1563 NEN-EN 1982 NEN-EN 10088-1 NEN-EN 12163 NEN-EN-12164 NEN-EN 12420 NEN-EN 13959 VROM Application of coating systems in drinking water applications Coating systems in drinking water supply systems Nodular cast iron couplings for pipes of nodular cast iron, grey cast iron, steel, PVC-U, PE or asbestos cement Rubber rings and cylinder head gaskets for connections in drinking water and waste water pipes Accessories in buildings-inflow combinations for closed hot water appliances Testing and requirements Materials for the home Part 1: Types of steel Materials for the home Part 2: Types of cast iron Materials for the home Part 4: Copper alloys Foundry technology Grey cast iron Foundry technology Nodular cast iron Copper and copper alloys - Ingots and castings Corrosion resistant steel types Part 1 list of corrosion resistant steel types Copper and copper alloys-bars for general use Copper and copper alloys-bars for metal removing Operations Copper and copper alloys - Forgings Anti-pollution check valves DN 6 to DN 250 inclusive, Family E, types A, B, C and D Regulation of the State Secretary for Infrastructure and Environment, dated June 29, 2011, no. BJZ2011048144, containing rules with regard to materials and chemical products to be used for drinking water and hot tap water supply (Regulation Materials and chemical products for drinking and hot tap water supply). 2012 Kiwa Nederland B.V. - 19 - February 1, 2012
11. I Model certificate Product certificate KXXXXXX/0X Issued Replaces Page 1 of 2 Check valves against pollution, Family E types A, B, C and D STATEMENT BY KIWA With this product certificate, issued in accordance with the Kiwa Regulations for Product Certification, Kiwa declares that legitimate confidence exists that the products supplied by: Name supplier delivered products which are specified on this certificate and carry the certification mark as described in "Marks" Kiwa verification mark and which at delivery comply with the requirements laid down in BRL-K629/03 on check valves against pollution, family E, Types A, B, C and D, dated 20xx- 01-01. Bouke Meekma Kiwa Publication of this certificate is allowed. Advice: consult www.kiwa.nl in order to ensure that this certificate is still valid. 2012 Kiwa Nederland B.V. Sir W. Churchilllaan 273 Postbus 70 2280 AB RIJSWIJK Tel. 070 414 44 00 Fax 070 414 44 20 www.kiwa.nl Supplier Tel. Fax E-mail Certification process consists of initial and regular inspection of: quality system product BRL-K629/03 2012 Kiwa Nederland B.V. - 20 - February 1, 2012