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Technical Briefs

Gas System Leakage Pressure Decay©

[+] Author and Article Information
David F. Doyle

ASME Member
Oak Park, CA

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF Pressure Vessel Technology. Manuscript received February 16, 2012; final manuscript received June 16, 2012; published online June 11, 2013. Assoc. Editor: Allen C. Smith.

J. Pressure Vessel Technol 135(4), 044503 (Jun 11, 2013) (3 pages) Paper No: PVT-12-1029; doi: 10.1115/1.4007190 History: Received February 16, 2012; Revised June 16, 2012

An inactive gas piping system with minor leaks may require repressurizing if the system pressure cannot be allowed to fall to atmospheric pressure, for example, to maintain cleanliness. In this study, a simple hand calculation is developed to predict static (leakage only) pressure decay, and thus the repressurizing frequency, of such a gas piping system. This method can also be used to estimate the maximum leakage flowrate in the event that automatic repressurizing is required. This prediction method was tested and validated.

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References

Figures

Grahic Jump Location
Fig. 4

2011 air leakage study

Grahic Jump Location
Fig. 2

Air compressor and tank

Grahic Jump Location
Fig. 1

2003 gaseous nitrogen leakage study

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