GB/T 41157.5-2022 English PDF

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GB/T 41157.5-2022: Fasteners for nuclear power plants - Part 5: Acceptance inspection
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41157.5-2022	199	Add to Cart	3 days	Fasteners for nuclear power plants - Part 5: Acceptance inspection	Valid

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GB/T 33943   GB/T 35481   GB/Z 32564   GB/T 41157.3   GB/T 41157.4   GB/T 41157.2   

Basic data

Standard ID: GB/T 41157.5-2022 (GB/T41157.5-2022)
Description (Translated English): Fasteners for nuclear power plants - Part 5: Acceptance inspection
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J13
Word Count Estimation: 10,149
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41157.5-2022: Fasteners for nuclear power plants - Part 5: Acceptance inspection

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Fasteners for nuclear power plants - Part 5.Acceptance inspection ICS 21.060.01 CCSJ13 National Standards of People's Republic of China Fasteners for nuclear power plants - Part 5.Acceptance inspection Published on 2022-03-09 2022-10-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration

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. This document is part 5 of GB/T 41157 "Fasteners for Nuclear Power Plants". GB/T 41157 has published the following parts. --- Part 1.Alloy steel bolts, screws and studs; --- Part 2.Carbon steel and alloy steel nuts; --- Part 3.Stainless steel bolts, screws and studs; --- Part 4.Stainless steel nuts; --- Part 5.Acceptance inspection. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Fastener Standardization Technical Committee (SAC/TC85). This document is drafted by. China National Machinery Productivity Promotion Center, Institute of Nuclear Industry Standardization, General Parts Product Quality Supervision of Machinery Industry Testing Center, China Nuclear Power Engineering Co., Ltd., China General Nuclear Power Engineering Co., Ltd., China General Nuclear Power Research Institute Co., Ltd., China Nuclear Power Research and Design Institute, Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Suzhou Thermal Engineering Research Institute Co., Ltd., Tsinghua University, Dingxi High-strength Fasteners Co., Ltd. Company, Zhoushan Zhengyuan Standard Parts Co., Ltd., Shanghai High Strength Bolt Factory Co., Ltd., Shanghai Qunli Fastener Manufacturing Co., Ltd., Shaoxing Mountain High Pressure Fastener Co., Ltd., Shandong Gaoqiang Fastener Co., Ltd., Zhejiang Haili Co., Ltd., Jinyi Industrial Co., Ltd., Ning Boningli High Strength Fastener Co., Ltd., Jiangsu Jiajie Special Screw Co., Ltd., Hunan Shenyi Machinery Application Research Institute Co., Ltd., Xuzhou Ruida High Strength Fastener Co., Ltd., Wenzhou Xinde Electric Power Parts Co., Ltd. This document is interpreted by the National Fastener Standardization Technical Committee.

Introduction

Fasteners are widely used in nuclear power plant safety systems and equipment, and undertake functions such as pressure sealing, component connection and support and fixation. Quantity and performance play an important role in nuclear power plant safety systems and equipment performing nuclear safety functions. However, in nuclear power plant construction and equipment manufacturing During the supervision process, it was found that there are weak links in the design, procurement, manufacture, installation and acceptance of nuclear power fasteners. GB/T 41157 "Nuclear Power Factory Fasteners" aims to standardize the technical requirements and test methods for fasteners used in nuclear power plants, and consists of the following five parts. --- Part 1.Alloy steel bolts, screws and studs; --- Part 2.Carbon steel and alloy steel nuts; --- Part 3.Stainless steel bolts, screws and studs; --- Part 4.Stainless steel nuts; --- Part 5.Acceptance inspection. In order to strengthen the quality management of bulk materials such as fasteners in nuclear power plants, in accordance with nuclear safety regulations and regulatory practices, the National Nuclear Safety Administration On August 17,.2016, Document No. 195 "Notice on Further Strengthening the Quality Management of Nuclear Power Plant Fasteners and Other Bulk Materials" and its annexes "Guidelines for Re-inspection of Fasteners in Nuclear Power Plants (for Trial Implementation)". The acceptance inspection specified in this document is based on the specified sampling size of the lot with zero defects (Ac=0). In the "Nuclear Power Plant Fasteners Entry (Field) Recovery On the basis of "Guidelines for Inspection and Testing (Trial)", the acceptance inspection of main dimensional characteristics that affect the fit or function of fasteners is added. Acceptance specified in this document The inspection can gradually replace the "Guidelines for Re-inspection of Nuclear Power Plant Fasteners (Site) Re-inspection (Trial)" and become the basis for the re-inspection of NPP fasteners. Fasteners for nuclear power plants - Part 5.Acceptance inspection

1 Scope

This document specifies the inspection procedures to be used by the purchaser without prior agreement, and specifies when there is no agreement between the purchaser and the supplier When an agreement is reached or there is a dispute over the compliance with the technical specifications, the arbitration acceptance procedure for batch acceptance or rejection shall be checked. This document applies to bolts, screws, studs and nuts that are delivered or intended to be delivered by the manufacturer and are used in nuclear power plants as items important to safety Waiting for inspection and acceptance.

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. GB/T 90.1 Fastener Acceptance Inspection GB/T 3099.4 Fasteners Terminology Control, Inspection, Delivery, Reception and Quality

3 Terms and Definitions

The terms and definitions defined in GB/T 90.1 and GB/T 3099.4 and the following terms and definitions apply to this document. 3.1 Inspection batch inspectionlot Fasteners received at the same time from the same supplier with the same mark, with the same production lot number, and a certain number of fasteners. [Source. GB/T 90.1-2002, 3.4, with modifications] 3.2 characteristic A dimensional element, mechanical property, physical property or functional characteristic or other identifiable product characteristic that defines a limit range. Examples. head height, stem diameter, tensile strength or hardness. [Source. GB/T 90.1-2002, 3.8, with modifications] 3.3 acceptancenumber Ac The maximum number of defects allowed for the same characteristic in any given sample. [Source. GB/T 90.1-2002, 3.11, with modifications] 3.4 Rejectionnumber Re The maximum number of defects that are not allowed for the same characteristic in any given sample. 3.5 batch lotsize ......

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