International Standard
ISO 20890-5:2020
Guidelines for in-service inspections for primary coolant circuit components of light water reactors — Part 5: Eddy current testing of steam generator heating tubes
Reference number
ISO 20890-5:2020
Edición 1
2020-06
International Standard
Vista previa
ISO 20890-5:2020
70713
No disponible en español
Publicado (Edición 1, 2020)

ISO 20890-5:2020

ISO 20890-5:2020
70713
Idioma
Formato
CHF 129
Convertir Franco suizo (CHF) a tu moneda

Resumen

This document gives guidelines for pre-service inspection (PSI) and in-service inspections (ISI) by eddy current tests on non-ferromagnetic steam generator heating tubes of light water reactors, whereby the test is carried out using mechanised test equipment outwards from the tube inner side.

An in-service eddy current test of steam generator heating tube plugs as a component of the primary circuit is not an object of this document. Owing to the different embodiments of steam generator heating tube plugs, the use of specially adapted test systems to be qualified is necessary.

Test systems for the localisation of inhomogeneities (surface) and requirements for test personnel, test devices, the preparation of test and device systems, the implementation of the testing as well as the recording are defined.

NOTE Data concerning the test section, test extent, inspection period, inspection interval and evaluation of indications is defined in the nuclear safety standards.

It is recommended that the technical specifications are based on experience on U-tube bends with even bend radius (similar to the S/KWU design). To test other kind of tube bends (e.g. U-tube bends with two 90° bends) further qualifications will be provided.

Informaciones generales

  •  : Publicado
     : 2020-06
    : Norma Internacional publicada [60.60]
  •  : 1
     : 19
  • ISO/TC 85/SC 6
    27.120.10 
  • RSS actualizaciones

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)