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Rebreather' Helps Navy Divers Beneath the Waves 31 May 2018, by Warren Duffie Jr
Deep breath: New 'rebreather' helps navy divers beneath the waves 31 May 2018, by Warren Duffie Jr. Panama City. The technology is sponsored by the Office of Naval Research Global (ONR Global) TechSolutions program. TechSolutions is ONR Global's rapid- response science and technology program that develops prototype technologies to address problems voiced by Sailors and Marines, usually within 12 months. "This rebreather system is an awesome opportunity to enhance the capabilities of Navy divers and accelerate their deployments," said ONR Command Master Chief Matt Matteson, who heads up TechSolutions. A US Navy diver gives the okay sign following his dive using the Office of Naval Research Global Navy diving missions include underwater rescues, TechSolutions-sponsored MK29 Mixed Gas Rebreather explosive ordnance disposal, ship hull system, which was developed at the Naval Surface maintenance, recovery of sunken equipment, and Warfare Center, Panama City Division. The new system salvage of vessels and aircraft. will conserve helium, which is a valuable natural resource, accelerate the deployment of Navy divers, and increase safety. Credit: U.S. Navy photo by John F. Beneath the waves, Navy divers breathe a careful Williams/Released mixture of oxygen and nitrogen. Below 150 feet, however, nitrogen becomes toxic—leading to nitrogen narcosis, a drowsy state that can dull mental sharpness severely and jeopardize safe The muscular U.S. Navy diver hoisted a 60-pound return to the surface. life-support regulator onto his back, then donned a 30-pound metal helmet. The solution is to replace nitrogen with helium. However, helium is expensive and hard to obtain Fellow divers connected his diving suit to an because of recent worldwide shortages. -
How to Make Solo Rebreather Diving Safer
technical So,what’s Say that you dive on your own with wrong about a rebreather and wait for the reactions. matters bringing a Rubiks cube You’ll hear some nasty comments about along on a dive? you being an accident waiting to happen Discussions about diving never did a solo dive. The other 92 percent have done at least a few Column by are very often boring— solo dives, with 33 percent doing Cedric Verdier always the same stories mostly solo diving. about numerous sharks Of course, a poll only represents dangerously close, strong the opinion of a few individuals current ripping a mask off who want to answer the questions. It cannot be considered as the “big or friendly dolphins play- picture” of the entire rebreather ing during a deco stop. diver community. Nevertheless, it We heard them so many shows that some rebreather divers times. keep on diving solo, even if the perceived risk is so high… So, if you want to have some Why people don’t dive fun, simply say that you dive on solo with a rebreather? your own with a rebreather and Simply because that’s one wait for the reactions. You’ll hear of the most basic rules some nasty comments about one learns during the you being an accident waiting Open Water Diver to happen, and some people course: “Never dive will clearly show you their option alone”. It’s so famous about your mental health. that it’s almost a dogma. And it sounds Why? Because everybody so logical? knows that CCR Solo diving is the most stupid thing to do on Earth 1. -
Requirements for Scientific Diver Certification
Requirements for Scientific Diver Certification The steps to become a Certified Scientific Diver at the University of Washington (UW) are outlined below. 1. Obtain sponsorship for scientific diving by an appropriate University department or unit. Applicants who do not have a departmental sponsor and want to learn to be scientific divers can complete the Scientific Diver Course at UW Friday Harbor Labs. This course meets the requirements for full Scientific Diver certification as outlined below, and includes research projects for students to receive dive training. 2. Read the UW Diving Safety Manual. UW divers must understand and follow the safety, procedural, and medical requirements outlined in the manual and submit a signed copy of the Dive Manual Acknowledgement form. 3. Complete and submit the Diving Registration Form to the UW Diving Safety Officer (DSO). This form must be signed by the department official sponsoring the diver (e.g., principal investigator, department chair) . Submission of this form is a onetime requirement while at the UW. The form is resubmitted if any diver information changes. 4. Complete and submit documentation of recreational SCUBA diver training to UW DSO. Diving applicants must have completed a recreational SCUBA diving training course as a pre-requisite for scientific diving certification at the UW. Recreational SCUBA diving training must be provided by a nationally recognized organization (e.g., PADI, NAUI, SSI, IANTD, TDI). 5. Obtain Diving Medical Clearance from the UW Employee Health Center. Applicants will contact the UW Employee Health Center (EHC) to obtain necessary information for completing a dive physical and for transfer of medical records. -
Inquest Finding
Coroners Act 1996 [Section 26(1)] Western Australia RECORD OF INVESTIGATION INTO DEATH Ref No: 18/17 I, Barry Paul King, Coroner, having investigated the death of Jarrod Arthur Hampton with an inquest held at the Perth Coroner’s Court on 15 May 2017 to 18 May 2017 and on 22 May 2017 to 26 May 2017, find that the identity of the deceased person was Jarrod Arthur Hampton and that death occurred on 14 April 2012 in the waters of the Indian Ocean approximately 90 nautical miles south of Broome from drowning secondary to incapacitation from air embolism in the following circumstances: Counsel Appearing: Sergeant L Housiaux assisted the Coroner Ms G A Archer SC (instructed by Corrs Chambers Westgarth) and Mr N D Ellery appeared for Paspaley Pearling Company Pty Ltd Mr A Coote appeared for the deceased’s family Mr P Hopwood appeared for the Pearl Producers Association Ms H C Richardson (State Solicitors Office) appeared for WorkSafe Table of Contents INTRODUCTION .............................................................................................................. 2 THE EVIDENCE ................................................................................................................ 4 THE DECEASED ............................................................................................................... 8 THE DECEASED’S DIVING BACKGROUND ....................................................................... 9 THE DECEASED’S SHOULDER AND PECTORALIS MAJOR .............................................. 10 THE DECEASED JOINS -
Review of Diver Noise Exposure
doi:10.3723/ut.29.021 International Journal of the Society for Underwater Technology, Vol 29, No 1, pp 21–39, 2010 Review of diver noise exposure TG Anthony, NA Wright and MA Evans QinetiQ Ltd, Hampshire, UK Technical Paper Abstract • Assess the risk to all employees, including divers, Divers are exposed to high noise levels from a variety from noise at work of sources both above and below water. The noise • Take action to reduce the noise exposure that exposure should comply with `The Control of Noise produces these risks at Work Regulations 2005' (CoNaWR05, 2005). A • Provide hearing protection if the noise risk detailed review of diver noise exposure is presented, cannot be reduced sufficiently by other methods encompassing diver hearing, noise sources, exposure • Ensure legal limits on noise exposure are not levels and control measures. Divers are routinely exceeded exposed to a range of noise sources of sufficiently high • Provide employees with information, instruction intensity to cause auditory damage, and audiometric and training studies indicate that diver hearing is impaired by • Conduct health surveillance where there is a risk exposure to factors associated with diving. Human to health. hearing under water, in cases where the diver's ear is The CoNaWR05 requires employers to take wet, is less sensitive than in air and should be assessed specific action at certain noise action values. These using an underwater weighting scale. Manufacturers of relate to the levels of exposure to noise of divers diving equipment and employers of divers have a joint averaged over a working day or week and the responsibility to ensure compliance with the exposure maximum noise (peak sound pressure) to which values in the CoNaWR05, although noise is only one they may be exposed. -
US Navy Diving Manual
,QGH[ $ decompression . 7-39, 8-33 decompression dives . 9-7 Abducen nerve assessment . 5A-6 emergency free ascent . 7-38 Acclimatization . 3-50 from 40 fsw stop . 14-5 Acoustic nerve assessment . 5A-7 from under a vessel . 7-39 ADS-IV . 1-25 surface-supplied diving . 8-32 Advanced Cardiac Life Support surfacing and leaving the water . 7-40 embolized diver . 20-3 variation in rate . 9-8, 14-14 Air sampling Ascent rate CSS services . 4-9 air diving . 9-7 local . 4-10 closed-circuit oxygen diving . 18-27 procedures . 4-8 delays . 9-8 purpose of . 4-5 delays in arriving at first stop . 14-14 source . 4-6 delays in leaving stop . 14-15 Air supply delays in travel from 40 fsw to surface . 14-15 air purity standards . 8-13 early arrival at first stop . 9-11, 14-14 air source sampling . 4-6 MK 16 . 17-21 criteria . 6-25 Asphyxia . 3-16 duration . 7-14 Atmospheric air emergency gas supply requirements for enclosed components of . 2-14 space diving . 8-6 Atrium . 3-2 flow requirements . 8-14 MK 20 MOD 0 . 8-6 % emergency gas supply . 8-6 flow requirements . 8-6 Bacon, Roger . 1-3 MK 21 MOD 1 . 8-1 Barotrauma emergency gas supply . 8-2 body squeeze . 3-25, 19-8 flow requirements . 8-2 conditions leading to . 3-21 pressure requirements . 8-2 external ear squeeze . .3-24, 3-25, 19-8 preparation . 8-23 face squeeze . 3-25, 19-9 pressure requirements . 8-14 general symptoms of . -
Public Safety Scuba Diving
Industry Guide 47 A Guide to Public Safety Diving N.C. Department of Labor Occupational Safety and Health Division N.C. Department of Labor 1101 Mail Service Center Raleigh, NC 27699-1101 Cherie Berry Commissioner of Labor N.C. Department of Labor Occupational Safety and Health Program Cherie Berry Commissioner of Labor OSHA State Plan Designee Kevin Beauregard Deputy Commissioner for Safety and Health Scott Mabry Assistant Deputy Commissioner for Safety and Health Tom Savage Standards Officer Author Acknowledgments A Guide to Public Safety Diving has been prepared with materials and information from the General Industry Standards, 29 CFR 1910, Subpart T—Commercial Diving Operations, and OSHA Instruction CPL 02-00-151 (U.S. Department of Labor, Occupational Safety and Health Administration). This guide also contains information from sources such as U.S. Navy Diving Manual, National Association of Search and Rescue, California Department Fish and Game Diving Safety Manual, and the National Fire Protection Association, NFPA 1670—Standard on Operations and Technical Search and Rescue. Through an existing alliance established between the N.C. Department of Labor’s Occupational Safety and Health Divi- sion and the North Carolina Public Safety Divers’ Association (PSDA), a collaborative effort was established to make this guide possible. The PSDA board of directors provided expertise involving public safety diving in sharing best practices and technical knowledge. A special thanks to Chuck Elgin, North Carolina Underwater Response Team, for his dedication and hard work assisting in the development of this publication. This guide is intended to be consistent with all existing OSHA standards; therefore, if an area is considered by the reader to be inconsistent with a standard, then the OSHA standard should be followed. -
History of Scuba Diving About 500 BC: (Informa on Originally From
History of Scuba Diving nature", that would have taken advantage of this technique to sink ships and even commit murders. Some drawings, however, showed different kinds of snorkels and an air tank (to be carried on the breast) that presumably should have no external connecons. Other drawings showed a complete immersion kit, with a plunger suit which included a sort of About 500 BC: (Informaon originally from mask with a box for air. The project was so Herodotus): During a naval campaign the detailed that it included a urine collector, too. Greek Scyllis was taken aboard ship as prisoner by the Persian King Xerxes I. When Scyllis learned that Xerxes was to aack a Greek flolla, he seized a knife and jumped overboard. The Persians could not find him in the water and presumed he had drowned. Scyllis surfaced at night and made his way among all the ships in Xerxes's fleet, cung each ship loose from its moorings; he used a hollow reed as snorkel to remain unobserved. Then he swam nine miles (15 kilometers) to rejoin the Greeks off Cape Artemisium. 15th century: Leonardo da Vinci made the first known menon of air tanks in Italy: he 1772: Sieur Freminet tried to build a scuba wrote in his Atlanc Codex (Biblioteca device out of a barrel, but died from lack of Ambrosiana, Milan) that systems were used oxygen aer 20 minutes, as he merely at that me to arficially breathe under recycled the exhaled air untreated. water, but he did not explain them in detail due to what he described as "bad human 1776: David Brushnell invented the Turtle, first submarine to aack another ship. -
Bonaire English Mar 2015.Cdr
Your Buddies on Bonaire Divers Paradise BELMAR BonaireOceanfront Apartments HOSPITALITY WITHOUT Dive, Relax & Explore LIMITS Caribbean Club Bonaire Contact your favorite travel specialist Bonaire, divers paradise Contents 3 About Bonaire 5 Island Highlights 6 Diving on Bonaire 7 Bonaire’s Dive Sites 8 Buddy Dive Resort 10 Buddy Dive Academy 11 Kids’ Activities 12 Kiteboarding & Windsurfing 13 Premier Dive Operation Buddy Dive’s Fleet 14 Belmar Oceanfront Apartments 16 Luxury, Romance & Weddings 18 Nature 20 Caribbean Club Bonaire 22 Outdoor Activities 23 Coral Restoration Foundation 24 Washington Slagbaai Park Safari 25 Technical Diving 26 Photography 27 Dining 28 Specials & Events 29 Quick Facts 30 Marine Life ID Dive, Relax & Explore BELMAR Bonaire BonaireOceanfront Apartments Kaya Gob. N. Debrot 85, Bonaire EEG Boulevard 88, Bonaire Santa Barbara Boulevard 50, Bonaire Dutch Caribbean Dutch Caribbean Dutch Caribbean International Reservations: International Reservations: International Reservations: +(599) 717 5080 (ext. 572) +(599) 717 5080 +(599) 717 5080 US/Canada Reservations: US/Canada Reservations: US/Canada Reservations: 1-866-GO-BUDDY 1-888-655-0605 1-800-906-7708 Fax: +(599) 717 5780 Fax: +(599) 717 7899 Fax: +(599) 717 7900 [email protected] [email protected] [email protected] www.buddydive.com www.belmar-bonaire.com www.caribbeanclubbonaire.com Photography by: Federico Cabello, Martin Cicilia, Annie Crawley, Bob Edwards, Alcides Falanghe, John Wall, Martien van der Valk, Marcel Westerhoff, Beth Watson, Kids Sea Camp. Design: Sapias Holding Ltd. Bonaire, Dutch Caribbean. All rights reserved. Bonaire, diver’s paradise / 2 hatching area and its beaches. The clear waters are ideal for snorkeling and sunbathing. Diving, kayaking, Bonaire is an island small in size wide, also offers a variety of activities caving, snorkeling, mountain bik- but filled with dynamic opportunities for those who do not dive. -
Ecological and Socio-Economic Impacts of Dive
ECOLOGICAL AND SOCIO-ECONOMIC IMPACTS OF DIVE AND SNORKEL TOURISM IN ST. LUCIA, WEST INDIES Nola H. L. Barker Thesis submittedfor the Degree of Doctor of Philosophy in Environmental Science Environment Department University of York August 2003 Abstract Coral reefsprovide many servicesand are a valuableresource, particularly for tourism, yet they are suffering significant degradationand pollution worldwide. To managereef tourism effectively a greaterunderstanding is neededof reef ecological processesand the impactsthat tourist activities haveon them. This study explores the impact of divers and snorkelerson the reefs of St. Lucia, West Indies, and how the reef environmentaffects tourists' perceptionsand experiencesof them. Observationsof divers and snorkelersrevealed that their impact on the reefs followed certainpatterns and could be predictedfrom individuals', site and dive characteristics.Camera use, night diving and shorediving were correlatedwith higher levels of diver damage.Briefings by dive leadersalone did not reducetourist contactswith the reef but interventiondid. Interviewswith tourists revealedthat many choseto visit St. Lucia becauseof its marineprotected area. Certain site attributes,especially marine life, affectedtourists' experiencesand overall enjoyment of reefs.Tourists were not alwaysable to correctly ascertainabundance of marine life or sedimentpollution but they were sensitiveto, and disliked seeingdamaged coral, poor underwatervisibility, garbageand other tourists damagingthe reef. Some tourists found sitesto be -
Politecnico Di Milano Performance and Cost
POLITECNICO DI MILANO Scuola di Ingegneria Industriale e dell’Informazione Corso di Laurea Magistrale in Ingegneria Energetica Dipartimento di Energia PERFORMANCE AND COST ASSESSMENT OF INTEGRATED SOLAR COMBINED CYCLES USING DIRECT STEAM GENERATION IN LINEAR COLLECTORS Relatore: Prof. Andrea GIOSTRI Co-Relatore: Prof. Marco BINOTTI Tesi di Laurea di: Angela D’Angelo, matricola 817329 Alessandra Ferrara, matricola 816318 Anno Accademico 2014-2015 Summary The incoming sun radiation can be converted in electricity directly with photovoltaic technology, or transferred to a working fluid and then converted into electric energy into a power plant. Costs of solar thermal collectors employed in stand-alone power plants are noticeably higher than more mature technologies one. A suitable alternative to exploit the solar thermal energy is the integration of solar collectors in already existing fossil-fuelled power plants; in this way, the investment cost of the power block is avoided and solar thermal energy is converted at higher efficiency. The present thesis work presents the analysis of several layouts of Integrated Solar Combined Cycle (ISCCs) in terms of nominal and annual performances and costs of the electricity. In the first part of the work, an analysis of the existing integrated plants and the state of the art of the ISCC technology have been presented. Advantages and disadvantages of the integration of solar collectors in different kind of power plants have been pointed out and a literature review of present studies about ISCCs has been made. Several commercial solar collectors have been analysed and a thermal model has been built to estimate the heat losses of collectors receiver. -
Seminar on Hydraulic 3 ·"' ,,- Laboratory·~ Techniq~Es • , R And·
Seminar on Hydraulic 3 ·"' ,,- Laboratory·~ Techniq~es • , r and·... Instrutnentation ' '\ -(,,: I ,;;;.,-. ..... '\ . ~ . October l r3, ~1980 l,' ~ ".,/ ',. .. : ~ - . ~~ -~ INTRODUCTION Since 1956 Government laboratories have been meeting to exchange ideas on hydraulic laboratory techniques and instrumentation. These meetings have been held at about 2-year intervals. This seminar was the eleventh of the series and represented a radical departure from the traditional participants. For the first time, university and private laboratories were invited to attend. This outside participation added additional spice to the meetings. To maximize the exchange of information, participation was limited by invitation to the major laboratories in the United States. A strong emphasis was placed upon discussions of what did not work as well as what was successful. In addition to the scheduled talks, an impromptu session was held to discuss "who knows about ?" One of the highlights of the seminar was a panel discussion following the banquet concerning the management of research from the Government, private industry, and university viewpoints. Surprisingly, there were far more similarities than differences between the three types of laboratories. The format of this report is an overall summary of each session, comments on each paper, followed by the papers. It was felt that this format promoted the greatest amount of candid response from the participants. Seminar Agenda Organizing Committee Danny L. King E. J. Carlson Henry T. Falvey Thomas J. Rhone Session