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GB/T 34536-2017: Natural gas -- Determination of radon concentration -- Scintillation flash method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34536-2017 | English | 119 |
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Natural gas -- Determination of radon concentration -- Scintillation flash method
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GB/T 34536-2017
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Basic data | Standard ID | GB/T 34536-2017 (GB/T34536-2017) | | Description (Translated English) | Natural gas -- Determination of radon concentration -- Scintillation flash method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E24 | | Classification of International Standard | 75.060 | | Word Count Estimation | 6,662 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-05-01 | | 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 | GB/T 34536-2017: Natural gas -- Determination of radon concentration -- Scintillation flash method
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Natural gas - Determination of radon concentration - Scintillation flash method
ICS 75.060
E24
National Standards of People's Republic of China
Natural gas - Determination of radon concentration - Scintillation vial method
2017-10-14 Published
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Method summary 1
4 Reagents and materials 1
5 equipment 1
6 Measurement step 2
7 measurement results 3
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents.
This standard is proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244).
The main drafting units of this standard. China Southwest Oil and Gas Field Branch of Natural Gas Research Institute, China's oil and gas quality control and energy
Key Laboratory of Measurement, China Petroleum Exploration and Development Institute Langfang Branch, the oil industry gas quality supervision and inspection center.
The main drafters of this standard. Li Xiaohong, Luo Qin, Wang Yujie, Yan Qi group, Zhou Lin, Wang Hongli, Han Zhongxi, Shen Lin.
Natural gas - Determination of radon concentration - Scintillation vial method
Warning --- This standard does not cover all the safety issues related to its application. Before using this standard, the user has the responsibility to formulate the corresponding
Safety and protection measures, and define the scope of its application.
1 Scope
This standard specifies the determination of natural gas radon (222Rn) concentration of scintillation bottles.
This standard applies to single-phase gas mixture does not apply to two-phase airflow.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 13609 gas sampling guidelines
3 method summary
The gas sample to be measured is taken into a vacuum scintillation vial using a purge method. Radon and its short-lived progeny to be measured after the balance
222Rn decay of the alpha particles emitted. The α particles were irradiated onto the scintillation vial ZnS (Ag) coating to allow the ZnS (Ag) to emit light. The photomultiplier tube
Collected and converted into electrical pulses, amplified by pulses, counted and recorded by the radioactivity monitor. In determining the number of pulses with the collected natural
The concentration of radon in the gas is functionally related, and the radon concentration in the natural gas to be measured can be calculated by counting the radioactivity monitor.
4 Reagents and materials
4.1 color silica gel, analytical grade.
4.2 anhydrous calcium sulfate, analytical grade.
4.3 nitrogen, not less than 99.99%.
4.4 latex tube, diameter 6mm, diameter 9mm, wall thickness 1.5mm.
4.5-pin valve.
5 equipment
5.1 Radioactivity Monitor Select a low-noise, high-magnification photomultiplier tube.
5.2 Scintillation Flask. A radon detector and sampling vessel made of stainless steel, copper or plexiglass with a cylindrical or bell shape inside
Layer coated with ZnS (Ag) powder, the upper seal of the vent valve, shown in Figure 1.
5.3 Recording and data processing system.
5.4 vacuum pump. Pumping rate 0.25L/s ~ 1L/s.
5.5 Rotameter. The maximum flow rate of not less than 5L/min.
5.6 Dryer volume 0.1L ~ 0.5L, built-in color silicone (4.1) or anhydrous calcium sulfate (4.2).
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