Evaluation of the U.S. Divers Nordic Scuba Regulator for Use in Cold Water.

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Evaluation of the U.S. Divers Nordic Scuba Regulator for Use in Cold Water.

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dc.contributor.author Clarke, JR
dc.contributor.author Junker, DL
dc.contributor.author Rainone, M
dc.date.accessioned 2007-02-28T20:00:57Z
dc.date.available 2007-02-28T20:00:57Z
dc.date.issued 1996
dc.identifier.citation ADA317310 en
dc.identifier.govdoc ADA317310
dc.identifier.govdoc NEDU-TR-11-96
dc.identifier.uri http://archive.rubicon-foundation.org/4106
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
dc.description.abstract NFDU tested the breathing effort and susceptibility to freeze-up of the U.S. Divers Nordic SCtIBA regulator. Five regulators were tested in 28%F (-20C) salt water, at depths to 198 fsw (60.7 msw). The probability of regulator failure was computed from the number of cold induced incidents, and the time to failure for each incident. There were no freeze-ups of the first or second stages. However, resistive effort was remarkably high, especially at low bottle pressures. The first stage regulator frequently malfunctioned due to the loss of silicon oil. High breathing pressure events during the resistive effort measurements occurred at mass flow rates exceeding 300 g/min at a 1500 psi supply pressure. Due to leakage of silicone oil and high breathing effort at low bottle pressures, the U.S. Divers Nordic is not recommended for Navy use in cold water (28"F) at any depth. en
dc.description.sponsorship US NAVY en
dc.format.extent 789273 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FLA en
dc.subject COLD WATER en
dc.subject BREATHING APPARATUS en
dc.subject Scuba equipment en
dc.subject SCUBA DIVING EQUIPMENT en
dc.subject SCUBA DIVERS en
dc.subject Scuba apparatus en
dc.subject PROBABILITY en
dc.subject failure en
dc.subject LOW PRESSURE en
dc.subject regulators en
dc.subject FLOW RATE en
dc.subject RESPIRATION en
dc.subject saltwater en
dc.subject underwater en
dc.subject freeze en
dc.title Evaluation of the U.S. Divers Nordic Scuba Regulator for Use in Cold Water. en
dc.type Technical Report en

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