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ISO 20890-3:2020

Guidelines for in-service inspections for primary coolant circuit components of light water reactors — Part 3: Hydrostatic testing

Jun 12, 2020

General information

60.60     Jun 12, 2020


ISO/TC 85/SC 6

International Standard





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This document gives guidelines for in-service system pressure tests of the reactor coolant circuit of light water reactors.
This document specifies the test technique, the requirements for measuring equipment and additional devices, the preparation and performance of the test as well as the recording and documentation, for the purpose to ensure the reliability and comparability of tests.
NOTE Data on (test) pressure, (test) temperature, scope of testing, rates of change of pressure and temperature, test schedule and inspection intervals can be obtained from the applicable national nuclear codes.

Life cycle


ISO 20890-3:2020
60.60 Standard published
Jun 12, 2020