Petroleum and natural gas industries. Drilling and production equipment. Shallow gas diverter equipment has-digital The method covers the determination

The method covers the determination of ambient air concentrations of nitrogen dioxide and nitrogen monoxide in zones classified as rural areas

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Petroleum and natural gas industries. Drilling and production equipment. Shallow gas diverter equipment has-digital The method covers the determination1 Scope This International Standard specifies requirements for the selection of the diverter equipment for rigs used to drill shallow gas bearing formations. It covers both onshore and offshore drilling operations, and considers also the auxiliary equipment associated with floating rigs. The specified requirements concern the following diverter equipment: annular sealing devices; vent outlets; diverter valves; diverter piping. This International