GB/T 31400-2015 English PDF

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GB/T 31400-2015: Fluorinated alkane -- Determination of non-condensable gas (NCG) -- Gas chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31400-2015	149	Add to Cart	3 days	Fluorinated alkane -- Determination of non-condensable gas (NCG) -- Gas chromatography	Valid

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Basic data

Standard ID: GB/T 31400-2015 (GB/T31400-2015)
Description (Translated English): Fluorinated alkane -- Determination of non-condensable gas (NCG) -- Gas chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G17
Classification of International Standard: 71.080.20
Word Count Estimation: 7,713
Date of Issue: 2015-05-15
Date of Implementation: 2015-10-01
Quoted Standard: GB/T 6681-2003; GB/T 9722; GB/T 10248
Regulation (derived from): National Standard Announcement 2015 No. 15
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 determination fluoroalkane non-condensable gases in the gas phase of the general method - Gas Chromatography. This Standard applies to medium pressure, high pressure and ultra-high pressure measurement fluorinated hydrocarbon vapor in Anhui non-condensable gases. This Standard test method for detecting sensitivity of 0.02% (volume fraction).

GB/T 31400-2015: Fluorinated alkane -- Determination of non-condensable gas (NCG) -- Gas chromatography

---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.
Fluorinated alkane. Determination of non condensable gas (NCG). Gas chromatography ICS 71.080.20 G17 National Standards of People's Republic of China Determination of fluorinated alkanes non-condensable gases (NCG) of Gas chromatography Fluorinatedalkane-Determinationofnoncondensablegas (NCG) - Issued on. 2015-05-15 2015-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemical refrigerants Technical Committee (SAC/TC63/SC9) centralized. This standard was drafted. Zhejiang Chemical Research Institute Co., Ltd., China Petroleum and Chemical Corporation Beijing Research Institute of Chemical. Participated in the drafting of this standard. Changshu 3F Zhonghao New Chemical Materials Co., Ltd., Shandong Dongyue Chemical Co., Ltd., Ying Peng Chemical has Ltd., Shandong Huaan New Materials Co., Ltd., Zhejiang blue sky and green high-tech Co., Ltd., Zhejiang Chemical Co., Ltd. fluorescent. The main drafters of this standard. Fang Road, Shiwan Jun, Fang Xiaoqing, Li enterprises really, Hu Yanzhao wind, Yang arrows, Chen Florida State, Long Kui. Determination of fluorinated alkanes non-condensable gases (NCG) of Gas chromatography

1 Scope

This standard specifies the determination fluoroalkane vapor in the general method of non-condensable gases --- Gas Chromatography. This standard applies to medium voltage, high voltage and extra high voltage measuring fluoroalkane vapor phase in non-condensable gases. The standard test method for the detection sensitivity Of 0.02% (volume fraction).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6681-2003 General rules for sampling gaseous chemical products GB/T 9722 General chemical reagent gas chromatography GB/T 10248 Gas analysis prepared calibration gas mixture static volumetric method

3 Terms and Definitions

The following terms and definitions apply to this document. Fluoroalkane non-condensable gases non-condensablegasinthefluorinatedalkane NCG When fluoroalkane sample gas-liquid equilibrium, vapor gas hard compressed air meter.

4 Sampling

Waiting sample of the product packaging container 4.1 a period of time, so that the gas-liquid equilibrium is reached, measure the ambient temperature at the location of their precise To 1 ℃, the ambient temperature of the sample. 4.2 according to the provisions of GB/T 6681-2003 7.10 sampled. The vacuum dried gas sampling cylinders and sample packaging container Phase outlet valve connected to the outlet valve open sample containers, and then open the inlet and outlet valves of the sampling cylinder full of air replacement system After the gas cylinder outlet valve closed sampling, the sample containers in the gas phase into the gas sampling cylinders, cylinder pressure equalization to be sampled After holding appropriate injection 60s, close the valve. Sampling and sample containers cylinders disconnected. 4.3 Sampling should ensure that the total amount need to be inspected. 4.4 When the total amount of vapor sample cylinders (Sample) < 500mL, the sample should not be used sampling cylinder.

5 principle of the method

By gas chromatography, under the selected operating conditions, fluoroalkane vapor sample through the column, so that non-condensable gas and other sub-components Away, (TCD) detector with a thermal conductivity detector, external standard method to calculate non-condensable gas content. ......

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