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17:50 Aug 13, 2010
This question was closed without grading. Reason: Other
English to Portuguese translations [PRO] Petroleum Eng/Sci / poluição no mar por óleo
English term or phrase: head (of cargo or ...)
Contexto: poluição no mar por óleo
Reduce the head of cargo or bunker oil by dropping or pumping liquid into an empty or slack tank
Alvo: PT-BR (sugestões em PT-PT são também benvindas).
head, pelo que entendo, é equivalente a pressão hidrostática.
É medida em função da altura da coluna de líquido (em metros, pés, polegadas, milimetros)
veja na ref. da wikipedia - pressure head or static head.
Hi Isabelle, thanks!
Pressure is not very likely to be the term. The text never mentions anything related to the pressure in the next paragraphs. I understood that the level is the key for the leakage problem in this case (leakage in cargo oil tanks and bunker oil tanks). Thanks again and have a nice weekend!
Tanker vessels for the transportation in bulk of liquid cargo are known in the art. See, for example, U.S. Pat. No. 2,918,032. Such tanker vessels generally comprise a plurality of liquid-tight transverse bulkheads and one or more liquid-tight longitudinal bulkheads which subdivide the tanker vessel into a plurality of liquid-tight storage compartments. If the bottom or a side of the hull of such a tanker vessel is ruptured by grounding or some other accident, the affected cargo tanks will leak until the "pressure head" of the liquid cargo in each tank, i.e., approximately the portion of the liquid cargo disposed above the waterline of the vessel, flows out of the tanker vessel. Such leakage is a significant potential problem in so-called "SWBT" and "double-bottom" tanker vessels which have greater freeboard than conventional tanker vessels, and, hence, a greater cargo pressure head.