GB/T 11813-2008 English PDF

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GB/T 11813-2008: Helium leak testing of nuclear fuel rod for PWR
Status: Valid

GB/T 11813: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11813-2008	279	Add to Cart	3 days	Helium leak testing of nuclear fuel rod for PWR	Valid
GB/T 11813-1996	319	Add to Cart	3 days	Helium leak testing of nuclear fuel rod for PWR	Obsolete
GB/T 11813-1989	RFQ	ASK	3 days	Leak testing of nuclear fuel rods using the helium mass spectrometer leak detector	Obsolete

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Basic data

Standard ID: GB/T 11813-2008 (GB/T11813-2008)
Description (Translated English): Helium leak testing of nuclear fuel rod for PWR
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F48
Classification of International Standard: 27.120
Word Count Estimation: 12,113
Date of Issue: 2008-07-02
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 11813-1996
Quoted Standard: GB 4844.2; GB/T 8979
Regulation (derived from): Announcement of Newly Approved National Standards No. 11 of 2008 (No. 124 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the sealing performance of PWR fuel rods helium leak detection methods, and test results of calculation and determination. This standard applies to the fuel rod sealing performance testing, test leak rate in the range of 1 �� 10-11Pa. m3/s ~ 1 �� 10-7Pa. m3/s. Pressurized water reactor control rods, burnable poison rods, sticks and other neutron source helium leak may also refer to this standard.

GB/T 11813-2008: Helium leak testing of nuclear fuel rod for PWR

---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.
Helium leak testing of nuclear fuel rod for PWR ICS 27.120 F48 National Standards of People's Republic of China Replacing GB/T 11813-1996 PWR fuel rods helium leak Posted 2008-07-02 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 11813-1996 "PWR fuel rods helium leak." This standard compared with GB/T 11813-1996, the main changes are as follows. a) increasing the normative references a chapter; b) increase in personnel and measurement requirements of the chapter; c) modify the leak measurement time requirements; d) to modify the system determines the background value of the standard; e) increase the standard leak calibration control and leak detection system according to the requirements of the end; f) increased determination method of measuring time. The Standard Appendix A, Appendix B, Appendix C is a normative appendix. The standard proposed by China National Nuclear Corporation. This standard by the National Standardization Technical Committee of nuclear energy. This standard was drafted. China Jianzhong Nuclear Fuel Limited. The main drafters of this standard. Yang-high, Guoxu Lin, Cao Hui, Guo Chunhai. This standard replaces the standards previously issued as follows. --- GB 11813-1989, GB/T 11813-1996. PWR fuel rods helium leak

1 Scope

This standard specifies the PWR fuel rods (hereinafter referred to as "fuel") calculated sealing performance helium leak detection methods and results And judgment. This standard applies to the fuel rod sealing performance testing, leak detection rate range is 1 × 10-11Pa · m3/s ~ 1 × 10-7Pa · m3/s. PWR control rods, burnable poison rods, neutron source rod like helium leak may also refer to this standard.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 4844.2 pure helium GB/T 8979 nitrogen, high purity nitrogen and ultra pure nitrogen

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 When the use of the fuel rod fabrication charged helium gas leak as shown sealing performance test method. 3.2 After the fuel rods placed in a vacuum vessel, filled with a predetermined pressure of helium, helium gas into the interior of the fuel rod from the drain hole or crevice, then Helium leak methods. 3.3 When the fuel rod cladding or weld tube end plugs and penetrating defects exist, since helium seal welded play helium leak detectors can detect the Leak rate determination value only waste time elapsed. Appendix A leak longest time press OK.

4 Method summary

This standard is based on the principle of mass spectrometry, using helium leak detectors, detector and vacuum system, standard leak, etc., of the fuel rods Leak sealing performance. According to the leak rate and leak detection system allows measurement of the deviation of the fuel rods sealed design techniques on the performance requirements, according Appendix B to determine the fuel leak rate determination scrap value. When the fuel leak rate is less than the value of the scrap judgment sealing performance is qualified; otherwise unqualified.

5 materials and equipment

5.1 Helium, GB/T 4844.2, qualified. 5.2 Industrial liquid nitrogen. 5.3 Industrial nitrogen, GB/T 8979. 5.4 helium leak detectors, sensitivity better than 1 × 10-11Pa · m3/s. 5.5 Standard leak, quartz nitrided film series standard leak chamber with helium leak rate in the range of technical conditions allow fuel leak rate ......

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