Statistically Based Decompression Tables. II. Equal Risk Air Diving Decompression Schedules.

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Statistically Based Decompression Tables. II. Equal Risk Air Diving Decompression Schedules.

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dc.contributor NAVAL MEDICAL RESEARCH INST BETHESDA MD en_US
dc.contributor.author Weathersby, PK en_US
dc.contributor.author Hays, JR en_US
dc.contributor.author Survanshi, SS en_US
dc.contributor.author Homer, LD en_US
dc.contributor.author Hart, BL en_US
dc.date.accessioned 2006-08-30T03:18:23Z
dc.date.available 2006-08-30T03:18:23Z
dc.date.issued 1985 en_US
dc.identifier.govdoc ADA157606 en_US
dc.identifier.govdoc NMRI-85-17 en_US
dc.identifier.other PE63713N en_US
dc.identifier.other WUDN177792 en_US
dc.identifier.uri http://archive.rubicon-foundation.org/3403
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 (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested. en_US
dc.description.abstract Several sets of equal risk air decompression tables were calculated using a new methodology. Empirical decompression risk models were used to predict the probability of decompression sickness (DCS) for a given pressure exposure. These probabilistic models, earlier shown to have a considerable ability to separate tabulated experimental air dives according to DCS risk, were used to choose decompression schedules with an acceptable risk. The levels of risk used were 1percent and 5percent for standard air dives with an additional set of 0.5percent no-decompression limits. As the new method calculates risk according to an integral over the dive and postdive period, many possible decompression schemes will have the same risk. The best schedules are defined as those requiring minimal total decompression time for the specified risk and subject to operational constraints. The constraints used here are decompression stops at even 10-ft intervals of depth for whole minutes. An algorithm was developed to obtain schedules in a partially optimal manner. The methodology can be used directly to produce tables for other operational constraints or risk levels. Because of the known limitations of source data and risk models, these tables represent considerable extrapolation from known procedures and should not be considered for use without testing. en_US
dc.format.extent 6494138 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights 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 (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested. en_US
dc.subject STATISTICAL DATA en_US
dc.subject TABLES(DATA) en_US
dc.subject DECOMPRESSION SICKNESS en_US
dc.subject MATHEMATICAL MODELS en_US
dc.subject ALGORITHMS en_US
dc.subject METHODOLOGY en_US
dc.subject RISK en_US
dc.subject AIR en_US
dc.subject PROBABILITY en_US
dc.subject SCHEDULING en_US
dc.subject PRESSURE en_US
dc.subject EXPOSURE(PHYSIOLOGY) en_US
dc.subject DIVING en_US
dc.subject DECOMPRESSION en_US
dc.title Statistically Based Decompression Tables. II. Equal Risk Air Diving Decompression Schedules. en_US

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