A safety evaluation independent verification method and platform for passive characteristics of a third-generation nuclear power plant

Abstract

The invention provides a safety evaluation independent verification method and platform for passive characteristics of a third-generation nuclear power plant, and the method comprises the steps of building a software system suitable for the passive characteristics through verification of operation data and test data of the nuclear power plant; establishing a database of a software system and a model for verifying passive characteristics, wherein the database comprises related data of single experiments and overall experiments for verifying heap types or similar heap types; according to the selected non-active characteristic design, independently verifying the key accident and combining the nuclear power plant design data information to obtain a key phenomenon identification sequence; and carrying out calculation verification of passive characteristic superposition uncertainty analysis, and optimizing and perfecting a phenomenon identification model according to accident analysis comparison or / and uncertainty analysis results. Through verification analysis, the reasonable design and effectiveness of the national and No.1 passive safety system are confirmed, the key design accident PIRT is confirmed and perfected, and the national and No.1 passive safety system is helped to pass related independent verification requirements and safety evaluation.

Description

technical field [0001] The invention relates to the technical field of nuclear energy-safety evaluation, in particular to an independent verification method and platform for safety evaluation of passive characteristics of third-generation nuclear power plants. Background technique [0002] According to Section 3.6 of HAF102 "Nuclear Power Plant Design Safety Regulations": "Before submitting to the national nuclear safety regulatory authority, the owner must ensure that the safety evaluation is independently verified by individuals or groups that have not participated in the relevant design", nuclear safety guidelines HAD102 / 17 "Nuclear Power Plant Safety Evaluation and Verification" provides supplementary instructions for safety evaluation, safety analysis and independent verification. In the guidelines, safety assessment is a systematic process that runs through the entire design process to ensure that the nuclear power plant design meets all relevant safety requirements. ...

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Problems solved by technology

[0004] However, there is not much experience in independent verification work in China at present, and there is a lack of an open and reasonable system to guide relevant work, ensure the rationality and effectiveness of the verification, and further promote the design work, thereby helping to obtain the approval of the regulatory authority.

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