Accession Number : AD0868664

Title :   Effect of Corrosion Inhibitors on Fuel Behavior in Filter-Separator Life Tests.

Descriptive Note : Interim technical rept. 1 Aug-30 Nov 69,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX

Personal Author(s) : Johnston, Robert K. ; Monita, Charles M. ; Brown, Robert D. ; Fernandez, Frank, Jr

Report Date : MAR 1970

Pagination or Media Count : 88

Abstract : Single-element filter-separator tests were conducted to study the effects of fuel corrosion inhibitors on element performance in removing water and solid contaminants from jet fuel. Most of the tests were 'life tests' of 125 hr in which a fuel supply of about 12,000 gal was pumped through the element at 20 gpm in 8-hr cycles, with continuous injection of red iron oxide at a concentration of 0.33 mg/l in the fuel upstream of the test element. This contamination level is typical of fuel encountered by filter-separator elements in field service. The coalescing ability of the test element was checked periodically by injecting water upstream of the element. All corrosion inhibitors that were tested did impair element performance as measured by downstream fuel cleanliness and by element plugging rate, and also gave decreases in the fuel's WSIM (water-separometer rating) and fuel-water interfacial tension. Based on the criteria used in qualifying filter-separator elements under current specifications, most tests indicated element failure. Element failure modes in order of decreasing frequency were coalescence failure, filtration failure, and solids retention failure (plugging). Samples taken at time of transient flow disturbance such as the start of fuel flow or water injection showed increased contaminant levels in the downstream fuel. (Author)

Descriptors :   *CORROSION INHIBITION), *JET ENGINE FUELS), (*FUEL ADDITIVES, (*FLUID FILTERS, TEST METHODS, IRON OXIDES, WATER, CHEMICAL CONTAMINATION.

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE