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Database: 189760 (18 Oct 2025)
NB/T 20421.5-2021 English PDF
Standard ID
Contents [version]
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Standard Title (Description)
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NB/T 20421.5-2021
English
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3 days [Need to translate]
(Method for monitoring the status of cables important to safety in nuclear power plants - Part 5: Optical time domain reflection)
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NB/T 20421.5-2021
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Basic data
Standard ID
NB/T 20421.5-2021 (NB/T20421.5-2021)
Description (Translated English)
(Method for monitoring the status of cables important to safety in nuclear power plants - Part 5: Optical time domain reflection)
Sector / Industry
Energy Industry Standard (Recommended)
Classification of Chinese Standard
F83
Date of Issue
2021
Date of Implementation
2021-07-26
Regulation (derived from)
National Energy Administration Announcement No. 3 of 2021
Issuing agency(ies)
National Energy Administration