SN/T 2057-2008 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2057-2008	239	Add to Cart	3 days	Rules for inspection of radiativity for import stone	Obsolete

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Basic data

Standard ID: SN/T 2057-2008 (SN/T2057-2008)
Description (Translated English): Rules for inspection of radiativity for import stone
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Q21
Word Count Estimation: 6,632
Date of Issue: 2008-04-29
Date of Implementation: 2008-11-01
Quoted Standard: GB/T 4935; GB 6566; SN 1327
Regulation (derived from): Industry standard filing Notice 2008 No. 7
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the imported stone sampling, testing methods and results of determination and disposal. This standard applies to on-site radiological inspection of imported stone.

SN/T 2057-2008: Rules for inspection of radiativity for import stone

---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.
Rules for inspection of radiativity for import stone Exit inspection and quarantine industry standard book People's Republic of China Radiological inspection of imported stone Posted 2008-04-29 2008-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China, Xiamen Exit Inspection and Quarantine is responsible for drafting. The main drafters of this standard. Cai Yanping, Li Bao home Linzhen Ji, Hong savings Hung Kiu Chan, Yang Hao. This is the first issue Entry-exit inspection and quarantine industry standards. Radiological inspection of imported stone

1 Scope

This standard specifies the method of imported stone of sampling, testing and the results of determination and disposal. This standard applies to imported stone radioactive test site.

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, according to the study encourages the parties to the agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 4835 radiation protection portable X, γ radiation dose rate meters and monitors GB 6566 building materials radionuclide limits SN 1327 import and export granite site Radiation dose measurement and control standards

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 A portable radiation detection instrument site, you need to take some action and the limits specified. Below the value of the stone by nuclear Su analysis does not exceed the GB 6566 Class A decoration materials requirements may be exempted from further nuclide analysis and supervision of the goods. 3.2 Inspection of imported stone from the same batch, consisting of the same origin and varieties of the same inspection lot.

4 Instrument

Site inspection by the γ radiation dose rate meter should be consistent with GB/T 4835 requirements and metered qualified and within the validity period. In normal instrument Case, the main technical parameters and functions should generally be met. Energy range. 20keV ~ 2.5MeV; Measurement Uncertainty. -20% ~ + 20% (K = 3); Dose equivalent measuring range. 10μSv/h ~ 1μSv/h; Alarm level. according to inspection management value is set.

5 Inspections

5.1 preparation before the test 5.1.1 inspection and quarantine institutions may need to specify the implementation of the radioactive site inspection field (station), in order to ensure on-site environmental background values relative stable. 5.1.2 Personal protection should be prepared before the inspection staff on-site testing. 5.1.3 The testing should be carefully checked before shipment certificate to verify the name, size, batch, tag number and container number, etc. seals whether the internal inspection Yung match. ......

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