Anti-electrostatic sampling method

Details Anti-electrostatic sampling method Anti-electrostatic sampling method

1977-12-09

1979-02-06

Swisher, S. Clement

Measuring and testing

Measuring vessel

73422R, 361215, G01N 110

Patent

active

041377737

ABSTRACT:
When liquid petroleum samples are taken from petroleum producing and transporting equipment in cold, dry areas, for example, northern Alaska, there is a danger of electrostatic sparking and explosion of the flammable liquids being sampled. This hazard is reduced by gentle sampling techniques and cooling the sample. The liquid sample line is cooled and the flow rate of the petroleum liquid is prevented from exceeding 1 meter per second. In addition, the liquid is flowed upward in the sample container thereby preventing flashing, agitation, and higher flow rates. For added safety, the sample container or the container and sample line may be prefilled with a noncombustible fluid. The container may also be made of metal and connected by an electrical conductor directly or indirectly to the equipment being sampled.

REFERENCES:
patent: 2260419 (1941-10-01), Wrightsman
patent: 2284560 (1942-05-01), Corneil
patent: 2911607 (1959-11-01), Booth
patent: 2953147 (1960-09-01), Hornback
patent: 3956921 (1976-05-01), Himes

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