摘要 :
A nationally representative sample of 2,812 establishments were interviewed to determine the presence of underground motor fuel storage tanks. The sample represented establishments in fuel-related industries (1,612), large establi...
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A nationally representative sample of 2,812 establishments were interviewed to determine the presence of underground motor fuel storage tanks. The sample represented establishments in fuel-related industries (1,612), large establishments in all other industries (600), and farms (600). A total of 890 of these establishments were found to have a total of 2,445 underground motor fuel storage tanks. A subsample of 218 establishments was selected for tank tightness testing, using a modification of a commercially available test. The method over-filled the tank system into a standpipe, and thus detected leakage anywhere in the system of tank vessel, pipes, lines, joints, and fittings.
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摘要 :
The Navy currently is studying the possibility of incorporating an anti-icing additive (AIA) consisting mainly of methyl cellosolve in its jet fuels. A question has arisen as to the effect this additive might have on organic linin...
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The Navy currently is studying the possibility of incorporating an anti-icing additive (AIA) consisting mainly of methyl cellosolve in its jet fuels. A question has arisen as to the effect this additive might have on organic linings now generally used in fuel storage tanks. Test panels coated with the various approved lining materials were immersed for 12 months in a waterfuel mixture containing this anti-icing additive in progressively increasing amounts, ranging from 0 to 100% in the aqueous phase. Results at the end of 12 months indicate that there is significantly less blister formation, both in size and density, of linings exposed to 20 to 40% concentrations of anti-icing additive than of linings exposed to higher and lower concentrations. The concentration limits which the additive would reach in water in normal service are in the 20 to 40% range. (Author)
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摘要 :
Leaking underground storage tanks have become a matter of national concern. Materials leaking from underground tanks can pose a risk of groundwater contamination and in the case of flammable materials, a risk of fire or explosion....
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Leaking underground storage tanks have become a matter of national concern. Materials leaking from underground tanks can pose a risk of groundwater contamination and in the case of flammable materials, a risk of fire or explosion. The United States Congress, in recognition of this problem, mandated the Environmental Protection Agency to develop regulations for underground storage tanks containing motor fuels. As a part of the regulatory process, EPA was mandated to conduct a national survey of underground fuels storage tanks. The objectives of the project were to evaluate and select a suitable method for testing the tanks, quantify the performance of the recommended method, and develop a standard operating procedure for tank testing for the national survey. The initial phase of the project was a preliminary evaluation of existing tank test methods by literature review and field observation.
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摘要 :
This study has been performed to aid in the effort to minimize the possibility of a fuel tank explosion in a commercial aircraft. An understanding of the mechanisms behind fuel vaporization processes in an aircraft fuel tank is es...
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This study has been performed to aid in the effort to minimize the possibility of a fuel tank explosion in a commercial aircraft. An understanding of the mechanisms behind fuel vaporization processes in an aircraft fuel tank is essential to developing accident prevention techniques. An experiment was designed to measure the conditions existing within a heated aluminum fuel tank, partially filled with JP-8 jet fuel, under varying ambient conditions similar to those encountered by an in-flight aircraft. Comprehensive fuel tank data, including all temperatures, pressure, and ullage hydrocarbon concentration, was obtained during testing, and is available for use to validate heat and mass transfer calculations. An existing model was employed in this work to calculate ullage temperature and ullage fuel vapor concentration in the tank and compare with measured values, to explain the transport processes occurring in the tank during testing, and to estimate the flammability of the ullage vapors existing within the tank. The calculations made by the model were in good agreement with the measured data. The model also gave a good indication of the temporal mass transport processes occurring in the tank and gave a reasonable assessment of the ullage vapor flammability in the tank.
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摘要 :
Data gathered during this research showed that aluminum fuel tanks failed in manydifferent types, makes, and models of recreational boats owned by the general public. Problems with leakage of aluminum fuel tanks in boats are wides...
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Data gathered during this research showed that aluminum fuel tanks failed in manydifferent types, makes, and models of recreational boats owned by the general public. Problems with leakage of aluminum fuel tanks in boats are widespread. Examination of the completed surveys did not reveal a common factor to the boats which experienced problems with their aluminum fuel tanks. Based on the wide range of data, it was not possible to make a realistic determination of an average life span of these aluminum fuel tanks. An examination of the basic interaction of marine grade aluminum with the boat bilge environment showed that aluminum designated for marine use has never been subjected to substantial research under these conditions. The study illustrates a serious problem requiring further research in the future.
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