Standard No.:	GB/Z 34541-2017
English Name:	Safety operation management regulation for hydrogen fueling facilities of hydrogen vehicles
Chinese Name:	氢能车辆加氢设施安全运行管理规程
Chinese Classification:	F19    New energy and others
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2017-10-14
Implemented on:	2018-5-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	8500 words
Price(USD):	250.0
Delivery:	via email in 1 business day

Qualified judgement criteria of sampling inspection for gems and precious metal products 1 Scope This standard specifies the requirements and methods for sampling, inspection, judgment and repeat test or inspection of gems and precious metal products during quality inspection. This standard is applicable to the quality inspection of gems and precious metal products. For other types of gems and precious metal products, this standard can be used as a reference. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2828.4-2008 Sampling procedures for inspection by attributes—Part 4: Procedures for assessment of declared quality levels GB/T 2828.11 Sampling procedures for inspection by attributes—Part 11: Procedures for assessment of declared quality levels for small population GB/T 9288 Gold jewellery alloys—Determination of gold—Cupellation method (fire assay) GB 11887 Jewellery—Fineness of precious metal alloys and designation GB/T 14459 Sampling inspection rules rules by attributes for precious metal adornment GB/T 16306 Re-inspection and re-test procedures for assessment of declared quality levels GB/T 16552 Gems—Nomenclature GB/T 16553 Gems—Testing GB/T 16554 Diamond grading GB/T 17832 Silver jewellery alloys—Determination of silver—Volumetric (potentionmetric) method using potassium bromide GB/T 18043 Jewellery—Determination of precious metal content—Method using X-Ray fluorescence spectrometry GB/T 18781 Cultured pearl grading GB/T 19719 Jewellery—Determination of the release of nickel—Method of spectrometry GB/T 19720 Platinum jewellery alloys—Determination of platinum and palladium—Gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime GB/T 21198.6 Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 6: Difference method GB/T 23885 Jadeite grading GB/T 28019 Adornment—Determination of Chromium (Ⅵ)—1,5-Diphenylcarbohydrazide spectrophotometric method GB/T 28020 Adornment—Determination of baneful elements—X-ray fluorescence spectrometric method GB/T 28021 Adornment—Determination of baneful elements—Method of spectrometry GB 28480 Adornment—Provision for limit of baneful elements GB/T 28485 Coated adornment—Detection of nickel release—Method for simulation of wear and corrosion GB/T 29155 Transparent jadeite (colorless) grading GB/T 30712 Provision of permissible errors for measurement of polished diamond mass GB/T 31912 Adornment—Mark QB/T 1689 Terms of precious metal adornment QB/T 1690 Provision of permissible errors for measurement of precious metals adornment mass QB/T 2062 Precious metal adornment QB/T 4189 Evaluation specifications of precious metal jewelry technological 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 audit population all the audited unit products. The audit population size refers to the quantity of unit products in the audit population, expressed by the letter N 3.2 declared quality level upper limit of the quantity (percent) of nonconforming products allowed in the audit population

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Sampling 5 Inspection items and requirements 6 Inspection method 7 Judgment 8 Repeat test or inspection