Suitability of the USN MK 15 (VVAL 18) Decompression Algorithm for Air Diving.

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Suitability of the USN MK 15 (VVAL 18) Decompression Algorithm for Air Diving.

Show simple item record Thalmann, ED 2007-07-07T02:59:33Z 2007-07-07T02:59:33Z 2003
dc.identifier.citation ADA443070 en
dc.identifier.govdoc ADA443070
dc.identifier.govdoc N0463A-96-M-7036
dc.identifier.govdoc NEDU-TR-03-12
dc.description Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center ( is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested. en
dc.description.abstract A computer algorithm was developed and approved for use breathing a fixed 0.7 ata partial pressure of oxygen in nitrogen gas in 1980 (The MK15 (VVAL18) RTA). The intent was to incorporate this algorithm into a diver carried underwater decompression computer (UDO). This same algorithm was also tested breathing air but approval for Fleet us on air was never sought because at the time b there was no decompression computer suitable for its incorporation. The Navy has recently contracted to have a UDO built raising again the need to have the MK15 (VVALl8) RTA approved for use on air. This report provides an in depth analysis of the risk of decompression sickness (DOS) using the XKl5 (VVALl8) RTA on air and compares that to the risk using the standard air tables. The DOS risk was computed from various dive profiles using a probabilistic decompression algorithm developed at the Naval Medical Research Institute (the NMRI Lal PDA). The NMRI LEl PDA had been calibrated on several thousand air and 0.7 ata constant P02 in N2 dive profiles where the actual outcome (DOS or no DOS) was known and has been shown to give reasonable risk predictions and dives switching between air and constant 0.7 ata Po2 breathing gases were analyzed. Analysis showed that the MK15 (WUALlS) ETA) produced risks not significantly higher and in most cases lower than current USN air procedures. It was recommended that the algorithm be submitted for approval for diving breathing air, constant 0.7 ata PO2 in N2 or switching between the two gases. en
dc.description.sponsorship US NAVY en
dc.format.extent 11292510 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.subject Algorithms en
dc.subject decompression en
dc.subject risk en
dc.subject COMPUTERS en
dc.subject DCS en
dc.subject divers en
dc.subject nitrogen en
dc.subject OXYGEN en
dc.subject air en
dc.subject gas en
dc.title Suitability of the USN MK 15 (VVAL 18) Decompression Algorithm for Air Diving. en
dc.type Technical Report en

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