GB/T 41576-2022Requirements for unit performance test after initial fuel loading of pressurized water reactor nuclear power plants (English PDF)
压水堆核电厂装料后机组性能试验要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 11, 2022
Implementation date
February 1, 2023
Scope
GB/T 41576-2022 is the English-translated version of 压水堆核电厂装料后机组性能试验要求.
GB/T 41576-2022 sets the requirements for the unit performance tests that a pressurized water reactor nuclear power plant carries out after its first fuel loading.
It fixes the purpose of the tests, the conditions under which they are run, their content, the acceptance criteria and the test records and reports.
The document defines the terms it uses, commissioning, initial fuel loading, subcriticality, initial criticality, the low power test and the power test, and notes the usual power plateaus at 10%, 25%, 50%, 75%, 90% and 100% of power.
It applies to the unit performance test after the initial fuel loading of a pressurized water reactor plant, and cites NB/T 20145. It was issued on 11 July 2022 and has applied since 1 February 2023.
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Document preview — GB/T 41576-2022
National Standard of the People's Republic of China
- ICS
- 27.120.20
- Classification
- F 63
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Test purpose
- 5 Test conditions
- 6 Test content
- 7 Acceptance Criteria
- 8 Test records and reports
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.
1 Scope
This document specifies the test purpose, test conditions, test content and acceptance criteria of the unit performance test after the initial charging of the pressurized water reactor nuclear power plant and test records and reports.
This document is applicable to the unit performance test after the initial charging of the pressurized water reactor nuclear power plant.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
NB/T 20145 Nuclear power plant commissioning test procedures and report writing specifications
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Commissioning
The process of operating installed nuclear power plant components and systems and verifying that their performance conforms to design requirements and related criteria.
Note: Commissioning includes tests without nuclear reactions and with nuclear reactions.
3.2 Initial fuel loading
The initial loading of nuclear fuel is carried out according to the core loading map, and the core flux monitoring is carried out during the loading process.
3.3 Subcriticality
The state of the reactor when its effective multiplication factor Keff < 1.
3.4 Initial criticality
The reactor is physically started for the first time under the rated thermal condition, reaching the criticality and realizing a self-sustaining chain fission reaction.
3.5 Low power test
Reactor performance tests under a power platform slightly above zero power.
3.6 Power test
A series of tests carried out under the specified power platform.
Note: Typical power decks include 10% power deck, 25% power deck, 50% power deck, 75% power deck, 90% power deck and 100% power deck
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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