Download or read book Microbiological Aircraft Fuel Tank Contamination written by Coordinating Research Council. Aviation Group on Aircraft Fuel Tank Corrosion and published by . This book was released on 1974 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Microbial Contamination in Military Aviation Fuel Systems written by Harold W. Graef and published by . This book was released on 2003-03-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Military aviation fuel systems can be an ideal environment for microorganisms. Microbial growth in hydrocarbon fuel systems arises because of the impracticality of keeping fuel tanks sterile and the inevitable presence of water from condensation. Microbial contaminants in aviation fuel systems are a concern because of their potential to degrade the fuel, accelerate tank corrosion, and threaten flight safety. This research addresses the concern of using more environmentally friendly Fuel System Icing Inhibitors (FSII), which are also biocidal. Are significant levels of microorganisms growing in military aviation fuel systems, and if so, are there any common variables? Forty aviation fuel samples were collected from fuel storage tanks (including flexible expeditionary fuel bladders), refueling trucks, and aircraft from 12 U,S, military bases. Samples were analyzed using peak naming and pattern recognition algorithms of sample extracts processed on a gas chromatograph. Significant levels of microorganisms were found in military aviation fuel systems 90% (36 of 40) of fuel samples produced microbial growth. Over 40% of the serial dilutions that produced microbial growth were characterized as moderately or heavily contaminated samples. The microorganisms isolated were overwhelmingly Gram negative, anaerobic, bacilli with populations varying by orders of magnitude.

Download or read book Fuel and Fuel System Microbiology Fundamentals Diagnosis and Contamination Control written by Passman Frederick J. and published by ASTM International. This book was released on 2003 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidance Material on Microbiological Contamination in Aircraft Fuel Tanks written by International Air Transport Association and published by . This book was released on 2002 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidance Material on Microbiological Contamination in Aircraft Fuel Tanks written by International Air Transport Association and published by . This book was released on 2004 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proposed Procedures for Microbiological Examination of Fuels written by Society for Industrial Microbiology (U.S.). Committee on Microbiological Deterioration of Fuels and published by . This book was released on 1963 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aviation Fuel Quality Control Procedures written by and published by ASTM International. This book was released on with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microbial Contamination of Air Force Petroleum Products written by Ralph R. Cockey and published by . This book was released on 1964 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was undertaken to develop information and methods for control of microbial growth in jet fuel storage tanks and aircraft wing tanks, and to determine the vulnerability of other widely used AF materials to microbiological attack. The relative contamination level of fuel storage tank bottoms at 30 AF bases was determined, the flora characterized, and pathogenicity to laboratory animals of the predominant types determined. A number of water-soluble microbicides were evaluated. Potassium dichromate was an effective biostatic agent in laboratory and limited-scale field trials. A number of fuel- and watersoluble biocides were evaluated and several selected as worthy of more intensive testing. Ethylene glycol monomethyl ether, the principal ingredcient of mil-i-27686 anti-icing additive, was found to exert a marked biocidal action in concentrations above 10% in fuel tank bottoms. Fuel injection grade alcohol is recommended as an antiseptic wing tank rinse. (Author).

Download or read book Mechanism of Microbiological Contamination of Jet Fuel and Development of Techniques for Detection of Microbial Contamination written by Gordon C. Blanchard and published by . This book was released on 1966 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microbial Contamination of Usaf Jp 4 Fuels written by Viola H. Finefrock and published by . This book was released on 1966 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Biospecialties Branch, MRMPB, 6570 Aerospace Medical Research Laboratories, initiated a research effort to support and supplement the Air Force Aeronautical Systems Division program concerned with the relationship of microbial contamination to deleterious changes in JP-4 fuel systems. Results of this program have shown the following: the majority of JP-4 fuel systems contain low levels of viable microorganisms; microorganisms are primarily associated with the water phase and rarely with the fuel phase of a JP-4 fuel/water system; JP-fuels exert a toxic effect on viable microbial cells; and microbial corrosion of aluminum alloys 7075 2024, and 7178 can occur in the laboratory but does not appear to be the major cause of corrosion in operational systems. Twenty percent ethylene glycol monomethyl ether (EGME) in a laboratory JP-4 fuel/water-bottom acts as an inhibitor to the majority of viable cells present. As a result of engineering design, it is possible that fuel capacitance probes can cease to operate as a result of microbial growth. Micronic filter materials of phenolformaldehyde impregnated paper can support the growth of microorganisms, but growth even after 43 days is insufficient to cause filter clogging, provided the filter is immersed in fuel. In addition, field surveys of JP-4 fuel handling facilities and aircraft have shown that improved housekeeping and the use of EGME have reduced the quantity of microbial contaminants initially found in the jet systems to an insignificant level.

Download or read book Microbial Contamination of Jet Fuel written by William B. Engel and published by . This book was released on 1969 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanism of Microbiological Contamination of Jet Fuel and Development of Techniques for Detection of Microbiological Contamination written by Melpar, inc. Research Division and published by . This book was released on 1963 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress was made in determining the relationship between aluminum corrosion, sludge formation, and microbial metabolism. (1) Two assays using tetrazolium reduction were developed for the detection of small numbers of fuel microorganisms. (2) Growth of microorganisms in fuelwater media causes chemical changes in environment which result in a changing microbial flora. During growth in a closed system the pH and oxygen level decrease but the Eh and CO2 levels increase. (3) The conditions for demonstrating microbial corrosion were further defined. The corrosion studies carried out were of value in showing the multiplicity of factors entering into the corrosion process. The studies show that factors such as the composition of the growth medium, the composition, thickness, hardness, and microstructure of the aluminum alloys are of particular importance to the production and character of microbial corrosion. Research on the nutrition of fuel-oxidizing Pseudomonas resulted in the formulation of a fuel-water medium capable of yielding 100 times the growth observed on any medium described in the literature.

Download or read book Microbiological Evaluation of Aviation Fuel Storage Dispensing and Aircraft Systems written by and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent unconfirmed reports of problems in refueling systems induced by microbial activity prompted an investigation of refueling facilities at four Air Force bases. The distribution and servicing systems and aircraft surveyed were remarkably free of water, only 26 of 66 attempts to obtain water being successful. Those samples in which water was found contained considerably less than observed in previous field investigations. Fuel System Icing Inhibitor, known to exert an inhibitory effect on microorganisms, was present in the water bottom samples in concentrations ranging from 7 to 25% by volume. Microbial levels, both fungal and bacterial were inconsequential. This survey has shown the facilities evaluated to be free of significant microbial contamination, attesting to the beneficial results of excellent housekeeping procedures.

Download or read book Corrosion by Microorganisms of Jet Aircraft Integral Fuel Tanks written by Daniel Cabral and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanism of Microbiological Contamination of Jet Fuel and Development of Techniques for Detection of Microbiological Contamination written by Gordon C. Blanchard and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress was made in determining the relationship between aluminum corrosion, sludge formation, and microbial metabolism. (1) Two assays using tetrazolium reduction were developed for the detection of small numbers of fuel microorganisms. (2) Growth of microorganisms in fuelwater media causes chemical changes in environment which result in a changing microbial flora. During growth in a closed system the pH and oxygen level decrease but the Eh and CO2 levels increase. (3) The conditions for demonstrating microbial corrosion were further defined. The corrosion studies carried out were of value in showing the multiplicity of factors entering into the corrosion process. The studies show that factors such as the composition of the growth medium, the composition, thickness, hardness, and microstructure of the aluminum alloys are of particular importance to the production and character of microbial corrosion. Research on the nutrition of fuel-oxidizing Pseudomonas resulted in the formulation of a fuel-water medium capable of yielding 100 times the growth observed on any medium described in the literature.

Download or read book Mechanism of Microbiological Contamination of Jet Fuel written by Gordon C. Blanchard and published by . This book was released on 1966 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanism of Microbiological Contamination of Jet Fuel and Development of Techniques for Detection of Microbiological Contamination written by and published by . This book was released on 1964 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress was made in determining the relationship between aluminum corrosion, sludge formation, and microbial metabolism. (1) Two assays using tetrazolium reduction were developed for the detection of small numbers of fuel microorganisms. (2) Growth of microorganisms in fuelwater media causes chemical changes in environment which result in a changing microbial flora. During growth in a closed system the pH and oxygen level decrease but the Eh and CO2 levels increase. (3) The conditions for demonstrating microbial corrosion were further defined. The corrosion studies carried out were of value in showing the multiplicity of factors entering into the corrosion process. The studies show that factors such as the composition of the growth medium, the composition, thickness, hardness, and microstructure of the aluminum alloys are of particular importance to the production and character of microbial corrosion. Research on the nutrition of fuel-oxidizing Pseudomonas resulted in the formulation of a fuel-water medium capable of yielding 100 times the growth observed on any medium described in the literature.