The development of a method to load JP4 aboard tankers which protects its anti-icing properties, eliminates tank drying, and results in significant savings in time and money.
March, Frederick William
Preston, Floyd W.
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The jet fuel currently used by the United States Air Force requires an anti-icing additive because of the long range, high altitude aircraft now in use. When transporting this jet fuel by tanker, all water must be removed from the vessel's tanks since the additive is highly soluble in water. In his three years experience as a petroleum inspector, the author has observed that tankers lifting JP4 are delayed approximately 12 hours per cargo at a cost of approximately $2,000 per cargo because of this tank drying requirement. Upon assignment to the University of Kansas in the Navy sponsored Petroleum Management Post Graduate Program, the author undertook, as his thesis project, the development of a less costly method of loading JP4, basing his study primarily upon laboratory tests but realizing that actual field tests would be required for conclusive results. Laboratory tests conducted indicate that the icing inhibitor concentration in the fuel may be maintained within the military specification limits of 0.10-0.15 per cent as long as a sufficient quantity of inhibitor is injected to satisfy the equilibrium concentration requirement of the water remaining aboard the vessel after normal deb al lasting., In most cases, no more icing inhibitor is required than is called for by the maximum military specification limit. Tests conducted at the University of Kansas and the author's own experience in loading tankers indicate that extensive savings in tine and money may be realized by using the proposed method. Using the new method could result in a savings of approximately 12 hours turn-a-round time per cargo lifted, a savings which is of immediate significance to the military. By using the new method, a savings of approximately $2,000 per cargo in drying time could also be realized, a savings of immediate significance to tanker operators. On a yearly basis, the author estimates that more than 4,000 hours in tanker turn-a-round could be saved as well as $700,000 in drying costs. Th-j author recommends, therefore, that field tests be conducted using actual vessels and that if these tests are successful the new method be adopted as soon as possible.
This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library Collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.
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