BS IEC 62397:2022 Tracked Changes compares BS IEC 62397:2022 With BS IEC 62397:2007 BSl Standards Publication Nuclear power plants - Instrumentation and control important to safety Resistance temperature detectors bsi. BS IEC 62397:2022 — Tracked Changes National foreword This British Standard was published by BSI. It is the UK implementation of FEC 62397:2007IEC 62397:2022. It supersedes BS IEC 62397:2007, which is withdrawn The UK participation in its preparation was entrusted to Technical Committee NCE/8, Reaetor instrumentationInstrumentation, Control &Electrical Systems of NuclearFacilities A list of organizations represented on this committee can be obtained on request to its committee manager. Contractual and legal considerations This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied)is orwillbe made,and no responsibilityorliability is or will be accepted by BsI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law. This publication is provided as is, and is to be used at the recipient's own risk. The recipient is advised to consider seeking professional guidance withrespecttoitsuseofthispublication This publication doesis not purportintended to inelude all the necessary provisions ofconstitute a contract. Users are responsible for its correct application. @ The British Standards Institution 20072022 Published by BSI Standards Limited 20072022 ISBN 978-0 580 52907 8978 0 539 12070 7 ICS27.120.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 200731 December2022. Amendments/corrigenda issued since publication Date Textaffected BS IEC 62397:2022 — Tracked Changes Contents Page FOREWORD ..vi INTRODUCTION. ..ix 1 Scope.. 2 Normative references. 3 Terms, definitions and abbreviated terms 3.1 3.2 Abbreviated terms... 4 Design and construction requirements... 4.1 4.2 Reliability ... 6 4.3 Materials ... 4.3.1 General... 4.3.2 Radiation dose to materials.... 4.3.3 Resistance element material .. 6 4.3.4 Seals and adhesives..... 4.4 Connections .... 4.4.1 Structuraltype. 4.4.2 Electrical connection... 4.4.3 4.5 Manufacturing quality .. .14 4.6 Ambient conditions (normal and accident operations) and qualification .... 14 4.7 RTD performance ... ..16 4.7.1 General..... 4.7.2 Accuracy.... .16 4.7.3 Resistance temperature calibration.... 4.7.4 Self-heating error... 17 4.7.5 Thermal response time ... 4.7.6 Interchangeability.... .18 4.7.7 Electrical insulation resistance ... 4.7.8 Repeatability (thermal shock) .... .19 4.7.9 Vibrat ion .... 19 4.7.10 Steam test .20 4.7.11 Thermal cycling 4.7.12 Dielectric inspection ... .21 4.7.13 4.7.14 In situ response time testing ... .21 4.8 Identification.... 4.9 Failure mode and effects analysis... .22 22 5 Inspection and tests.. 5.1 .Genera... 5.2 .23 Inspection and test failure... 5.3 Inspection and test reports.... 5.4 Test method .23 5.4.1 Assembly and appearance inspection .... 5.4.2 Calibration procedure.... 24 5.4.3 Self.heating test.. 5.4.4 Thermal response time ... 5.4.5 Insulation resistance test. 5.4.6 Repeatability test (thermal shock) .26 5.4.7 5.4.8 Steam test .26 5.4.9 Dielectric inspection test.. 5.4.10 iv @ BSI 2022 - All rights reserved