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  • BSI
    BS ISO 20890-4:2020 Guidelines for in-service inspections for primary coolant circuit components of light water reactors - Visual testing
    Edition: 2020
    $316.70
    / user per year

Description of BS ISO 20890-4:2020 2020

This document gives guidelines for pre-service inspection (PSI) and in-service inspections (ISI) for reactor coolant circuit components of light water reactors and their installations as direct or remote visual testing in the form of a

  1. general visual testing (overview), or

  2. selective visual testing (specific properties).

This document is also applicable to other components of nuclear installations. The requirements in this document focuses on remote (mechanized) visual testing, but also specifies global requirements for direct visual testing. For specific requirements for direct visual testing of welds see ISO 17637.

This document is not applicable to tests in respect to the general state that are carried out in conjunction with pressure and leak tests and regular plant inspections.

This document specifies test methods that allow deviations from the expected state to be recognised, requirements for the equipment technology and test personnel, the preparation and performance of the testing as well as the recording.

NOTE

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



Standard NumberBS ISO 20890-4:2020
TitleGuidelines for in-service inspections for primary coolant circuit components of light water reactors - Visual testing
StatusDefinitive
Publication Date2020-06-22
Identical National Standard OfISO 20890-4
DescriptorsReactors (electric), Electrical engineering, Coolants, Circuit networks, Testing
ICS27.120.10 Reactor engineering
CommitteeNCE/3
ISBN978 0 580 93456 8
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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