GB/T 17569-1998 in English

《GB/T 17569-1998压水堆核电厂物项分级》由TC58（全国核能标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了核电厂物项安全等级的划分要求，提出了相应的抗震分类和质量保证分级，并推荐了物项设计建造采用的规范、标准以及应赋予的规范等级。本标准适用于压水堆核电厂构筑物、系统和部件的等级划分，可为核电厂设计者对核电厂物项进行分级提供指导。

1 Scope

This standard specifies the classification requirements on the safe class of the nuclear power plant items and propones the corresponding classification of earthquake resistance and quality assurance as well as recommends the criteria, standard and criteria class of the item design and construction.
This standard is applicable to the class classification of the structure, system and parts in pressurized water reactor nuclear power plant and may provide instruction for the nuclear power plant designer to class the items in nuclear power plant.

2 Normative References

The provisions of the following standard, through reference in this standard, constitute the provisions of this standard. When this standard is published, all the listed editions are valid. As all the standards will be revised, each party using this standard shall discuss the feasibility of using the latest edition of the following standards.

Contents
Foreword I
1 Scope
2 Normative References
3 General Provisions
4 Classifications of Safety Classes
5 Classification of Earthquake Resistance Category
6 Classification of Standard Class
7 Classification of Quality Assurance Class
Annex A (Informative) Classification Table for Main Structure, System and Parts of Primary and Secondary Loops of Pressurized Water Reactor Nuclear Power Plants
Annex B (Informative) Classification List Example for the Items of Nuclear Power Plants
Annex C (Informative) Relation Comparison of All Kinds of Classifications
Annex D (Informative) Comparison of this Standard and Foreign Classification
Annex E (Informative) References