Record Display for the EPA National Library Catalog


Main Title Comparison of Relative Emissions from Double Mechanical Pump Seals to other Types of Pump Shaft Seals.
Author Provost, L. P. ; Tobias, J. E. ; Preston., S. L. ;
CORP Author Radian Corp., Austin, TX.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1981
Report Number RAD-80-203-001-21-01; EPA-68-02-3171; EPA-600/7-81-019 ; IERL-RTP-1137
Stock Number PB81-162083
Additional Subjects Air pollution ; Seals(Stoppers) ; Packings(Seals) ; Petroleum industry ; Leakage ; Pumps ; Shafts(Machine elements) ; Comparison ; Tables(Data) ; Industrial wastes ; Refineries ; Fugitive emissions ; Emission factors
Library Call Number Additional Info Location Last
NTIS  PB81-162083 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 15p
The report gives results of a comparison of pump seal data from nine petroleum refineries, to evaluate emissions from double mechanical pump seals versus those from other types of pump shaft seals. Light- and heavy-liquid service seals were compared separately. Non-methane leak rates for single and double seals were compared using schematic plots. Centrifugal/mechanical pump, centrifugal/packed pump, and reciprocal/packed pump leak rates were also compared using schematic plots. The percentages of seals leaking and 95 percent confidence intervals about the percentage leaking were calculated to evaluate the tendency for pump shaft seals to leak. In all cases, the confidence intervals for the three types of pumps overlapped, indicating no significant difference between pump types for either single or double seals and light- or heavy-liquid service.