GB/T 8995-2008 English PDF

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GB/T 8995-2008: In-core instrumentation for neutron fluence rate measurements in nuclear reactors
Status: Valid

GB/T 8995: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8995-2008	229	Add to Cart	3 days	In-core instrumentation for neutron fluence rate measurements in nuclear reactors	Valid
GB/T 8995-1988	279	Add to Cart	3 days	In-core instrumentation for neutron fluence rate measurements in nuclear reactors	Obsolete

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Basic data

Standard ID: GB/T 8995-2008 (GB/T8995-2008)
Description (Translated English): In-core instrumentation for neutron fluence rate measurements in nuclear reactors
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F81
Classification of International Standard: 27.120
Word Count Estimation: 10,138
Date of Issue: 2008-07-18
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 8995-1988
Quoted Standard: GB/T 4083; GB/T 7164
Adopted Standard: IEC 60568-2006, NEQ
Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 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 measurement of neutron fluence rate meter core design principles and requirements. This standard applies to online core neutron detectors and important purpose for the reactor safety (protection, information or control) the design of core components neutron fluence rate measurements and instrumentation. DC detectors are commonly used ionisation chamber, fission chamber neutron detectors and self-sufficiency.

GB/T 8995-2008: In-core instrumentation for neutron fluence rate measurements in nuclear reactors

---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.
In-core instrumentation for neutron fluence rate measurements in nuclear reactors ICS 27.120 F81 National Standards of People's Republic of China Replacing GB/T 8995-1988 Nuclear reactor core neutron fluence rate measuring instruments Posted 2008-07-18 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard reference to the IEC standard IEC 60568-2006, Nuclearpowerplants-Instrumentationimportantto safety-In-coreinstrumentationforneutronfluencerate (flux) measurementsinpowerreactors there Off the technical content. This standard replaces GB/T 8995-1988 "nuclear reactor core neutron fluence rate measuring instruments." This standard and GB/T 8995-1988 compared to the main changes are as follows. --- Chapter 3, "Terms and Definitions" adds the term "main signal", "additional signal", "output error limits" and "transfer function"; --- Increase the general principle of the detector cable installation (see 4.8); --- Increased mobile detector neutron fluence rate measuring instrument processing core functional requirements (see 6.7); --- Increased Chapter 13, "retired." The standard proposed by China National Nuclear Corporation. This standard by the National Standardization Technical Committee on nuclear instrumentation. This standard was drafted. China Nuclear Power Institute. The main drafters of this standard. Li Wenping, Liu Yanyang, Li Gao, Lu Yu Chuan. This standard replaces the previous standard release case. GB/T 8995-1988. Nuclear reactor core neutron fluence rate measuring instruments

1 Scope

This standard specifies the reactor core neutron fluence rate measuring instrument design principles and requirements. This standard applies to online core neutron detectors and important purpose for the reactor safety (protection or control) designed reactor core Sub fluence rate measuring means and instruments. Commonly used direct current from the detector chamber, and self fission chamber neutron detectors.

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 4083 nuclear reactor protection system security guidelines GB/T 7164 radiation detector characteristics and test methods for nuclear reactors

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Containing fuel elements and the primary coolant of high integrity container closed. 3.2 Within the reactor core unit volume generated by thermal power. 3.3 Probe for measuring the core or primary envelope to determine a point or neutron fluence rate neutron fluence or a region of fixed or movable Detector. 3.4 Only one can be read out of the measurement position after the output signal of the detector. Portion of the detector by neutron irradiation could be certain Volume of gas or liquid, or filaments, such as a spherical shape of a solid. After irradiated, that part of the neutron-induced radioactivity in another place with Appropriate methods measure. 3.5 Is generated on behalf of neutron fluence rate of the electrical signal detector is placed when one kind of measuring position. 3.6 No external power supply, by the action of its emitter (sensitive material) and neutrons, incident radiation into an electrical signal detector. 3.7 Radiation detector sensitivity measured by the following equation. ......

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