The Complete Diving System 2 Divator Product Overview
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Experimental Study of Nearshore Dynamics on a Barred Beach with Rip Channels Merrick C
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 107, NO. C6, 3061, 10.1029/2001JC000955, 2002 Experimental study of nearshore dynamics on a barred beach with rip channels Merrick C. Haller1 Cooperative Institute for Limnology and Ecosystems Research, University of Michigan, Ann Arbor, Michigan, USA Robert A. Dalrymple and Ib A. Svendsen Center for Applied Coastal Research, University of Delaware, Newark, Delaware, USA Received 4 May 2001; revised 17 October 2001; accepted 6 November 2001; published 28 June 2002. [ 1 ] Wave and current measurements are presented from a set of laboratory experiments performed on a fixed barred beach with periodically spaced rip channels using a range of incident wave conditions. The data demonstrate that the presence of gaps in otherwise longshore uniform bars dominates the nearshore circulation system for the incident wave conditions considered. For example, nonzero cross-shore flow and the presence of longshore pressure gradients, both resulting from the presence of rip channels, are not restricted to the immediate vicinity of the channels but instead are found to span almost the entire length of the longshore bars. In addition, the combination of breaker type and location is the dominant driving mechanism of the nearshore flow, and both are found to be strongly influenced by the variable bathymetry and the presence of a strong rip current. The depth-averaged currents are calculated from the measured velocities assuming conservation of mass across the measurement grid. The terms in both the cross-shore and longshore momentum balances are calculated, and their relative magnitudes are quantified. The cross-shore balance is shown to be dominated by the cross-shore pressure and radiation stress gradients in general agreement with previous results, however, the rip current is shown to influence the wave breaking and the wave-induced setup in the rip channel. -
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 -
Parker Legris Technical Tubing & Hose
Parker Legris Technical Tubing & Hose For advice or more information, please do not hesitate to contact us. Visit our website today: www.parkerlegris.com or consult our general Catalogue. Technical Tubing and Hose Overview P. 4-5 Technical Tubing and Hose Range P. 6-7 Packaging for Technical Tubing and Hose P. 8 Product Codes of Parker Legris Tubing and Hose P. 9 Flexible Calibrated Tubing Polyamide Tubing Semi-Rigid PA P. 11 Rigid PA P. 12 Table of Contents Table Fireproof PA P. 15 Anti-Spark with PVC Sheath P. 17 Polyurethane Tubing PU Ester P. 19 PU Ether - PU Ether Food-Grade "Crystal" P. 20 Antistatic PU P. 23 PU Ether, Anti-Spark, Single Layer / PU Ether, Anti-Spark with PVC Sheath P. 25 Polyethylene Tubing Advanced PE P. 27 Low Density PE P. 27 Fluoropolymer Tubing FEP P. 29 PFA P. 31 Antistatic PFA P. 31 Calibrated Multi-Tubing Polyamide Tubing with PVC Sheath Semi-Rigid PA P. 33 Twin Polyurethane Tubing Twin PU Ester P. 33 Calibrated Recoil Tubing Semi-Rigid PA Assembled with Fittings P. 35 PU Ester and Ether Tubing Assembled with Fittings, Metallic Spring Guard P. 37 Assembled with Fittings, Plastic Spring Guard P. 38 Coiled without Fittings P. 37 Braided PU Hose Assembled with Fittings, Plastic Spring Guard P. 41 Calibrated Braided Hose Clear Food-Grade PVC P. 43 Blue PVC P. 43 Self-Fastening NBR P. 45 Accessories P. 46-47 Compatibility Chart P. 48-49 Product Selection Table P. 50 3 Technical Tubing and Hose PA Tubing Fireproof High Resistance PA Tubing Anti-Spark PA or PU Tubing, with (P. -
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. -
Barbed Fittings and Clamps for Plastic and Rubber Tubing and Hose
123c Fittings & Clamps Hundreds of types of fittings To complete a tubing or hose and clamps can be used with installation, clamps are typically plastic and rubber tubing. Our necessary. NewAge Industries goal at NewAge® Industries is to offers a selection of quality offer a good cross-section of products to securely finish your fittings to efficiently connect our application. tubing and hose products. We suggest you use the The unique and compact ear- Recommended Fittings & type clamping system developed Clamps section found at by Hans Oetiker is a popular item. each tubing and hose Its simple design provides a product to guide you in strong clamping system that your selection. never needs retightening. The Oetiker name, as well as the You’ll see on the products it represents, is well following pages that known and respected throughout NewAge Industries the world. offers barbed fittings — Stainless steel worm gear clamps Thermobarb® — in are offered in many styles, various plastic materials including lined for use with soft and in brass for use with tubing. They offer a simple screw soft-walled tubing. A wide tightening method of installation. range of standard sizes are available. Many customers, however, do not want to use metal clamps for Heavy duty cam and groove various reasons (weight, couplings in two materials corrosion, conductivity), yet they handle corrosive materials. They still require a reliably strong and provide high impact strength and secure clamp. Kwik Clamp™ gives a much lighter weight than their the advantages of an all-plastic metal counterparts. design that cannot rust or corrode, will not vibrate loose, NewAge also offers push-to- and can be reused. -
The Dietary Preferences, Depth Range and Size of the Crown of Thorns Starfish (Acanthaster Spp.) on the Coral Reefs of Koh Tao, Thailand by Leon B
The dietary preferences, depth range and size of the Crown of Thorns Starfish (Acanthaster spp.) on the coral reefs of Koh Tao, Thailand By Leon B. Haines Author: Leon Haines 940205001 Supervisors: New Heaven Reef Conservation Program: Chad Scott Van Hall Larenstein University of Applied Sciences: Peter Hofman 29/09/2015 The dietary preferences, depth range and size of the Crown of Thorns Starfish (Acanthaster spp.) on the coral reefs of Koh Tao, Thailand Author: Leon Haines 940205001 Supervisors: New Heaven Reef Conservation Program: Chad Scott Van Hall Larenstein University of Applied Sciences: Peter Hofman 29/09/2015 Cover image:(NHRCP, 2015) 2 Preface This paper is written in light of my 3rd year project based internship of Integrated Coastal Zone management major marine biology at the Van Hall Larenstein University of applied science. My internship took place at the New Heaven Reef Conservation Program on the island of Koh Tao, Thailand. During my internship I performed a study on the corallivorous Crown of Thorns starfish, which is threatening the coral reefs of Koh Tao due to high density ‘outbreaks’. Understanding the biology of this threat is vital for developing effective conservation strategies to protect the vulnerable reefs on which the islands environment, community and economy rely. Very special thanks to Chad Scott, program director of the New Heaven Reef Conservation program, for supervising and helping me make this possible. Thanks to Devrim Zahir. Thanks to the New Heaven Reef Conservation team; Ploy, Pau, Rahul and Spencer. Thanks to my supervisor at Van Hall Larenstein; Peter Hofman. 3 Abstract Acanthaster is a specialized coral-feeder and feeds nearly solely, 90-95%, on sleractinia (reef building corals), preferably Acroporidae and Pocilloporidae families. -
Bill's Cave Diving Lexicon
Bill’s Cave Diving Lexicon 120 Rule: Noticing from the Navy NDL table that, for certain depths, depth + bottom time = 120 so that the NDL can be determined by subtracting the depth from 120. 200 DIN: Thread depth in a DIN valve and associated pressure (200 BAR) that can be handled. This size (7 threads) allows for a DIN to yoke conversion. 300 DIN: Thread depth in a DIN valve that provides the most secure (9 threads) connection and can withstand 300 BAR pressure. 5 nines pure: 99.999% pure, as in a gas. 50-50: Gas mix of 50% oxygen and 50% nitrogen used for decompression gas. 6351-T6 Aluminum Alloy: Alloy that has had problems with tank ruptures. Absolute Pressure: Total pressure being exerted on a diver At sea level Absolute pressure is 1 ATA and it increases by 1 ATA for each 33fsw (34ffw). ADDD (Air, Duration, Depth, Distance): Limits for dive termination acronym minimum Air volume/pressure, maximum Duration of dive, maximum Depth of dive, and maximum Distance of penetration. ADV (Automatic Deflation Valve, and Automatic Diluent Valve ): Device on a buoyancy compensator that allows for rapid air purging, and device on a rebreather that dilutes the breathing mix. AGE (Arterial Gas Embolism): A lung expansion injury. A condition in which gas bubbles enter the arterial system and cause damage by blocking blood flow to vital organs, most commonly the brain. This is generally caused by air passing through the walls of the alveoli into the bloodstream. Air: A gas mixture of Oxygen (21%), Nitrogen (78%), and other gasses (1%, Helium, Argon, etc.). -
Diving Accident / Incident Report Form
DIVING ACCIDENT / INCIDENT REPORT FORM NOTE: FAU Scientific Divers shall use this form to report diving related accidents, injuries, and incidents including; near-drowning, decompression sickness, gas embolism, lung overexpansion, or injuries that require hospitalization as well as any incidents that compromised diver safety or might result in later hospitalization, therapy, or litigation. FAU Dive Logs for all dives related to the accident / incident must also be submitted with this report. Contact the FAU Dive Safety Officer at 561-297-3129 with questions about whether or not to report an incident. GENERAL INFORMATION ABOUT THE ACCIDENT/ INCIDENT VICTIM DIVER NAME: DATE & TIME OF INCIDENT: DIVE LOCATION: DIVING CERTIFICATION LEVEL: CERTIFICATION DEPTH: Scientific Diver Diver-In-Training Temporary Diver CURRENT MEDICATIONS: CURRENT HEALTH PROBLEMS: If the diver is not anFAU-certified diver, complete this section. FAU-certified divers skip to the next section. AGE: SEX: (M/F) DIVER’S AGENCY OR ORGANIZATION: AGENCY OR ORGANIZATION DSO NAME & TELEPHONE #: # YEARS DIVING: TOTAL # DIVES: # DIVES LAST 6 MONTHS: PREVIOUS DIVE INCIDENTS & DATES: DESCRIPTION OF THE ACCIDENT / INCIDENT: Please describe accident / incident in detail. Include ANY factor which you believe may have contributed to, or minimized the accident / incident. If more than one accident / incident occurred please fill out a separate form. Use extra paper if necessary. What could have been done to prevent this accident / incident? Did the accident / incident cause harm: Diver’s qualification: (may circle >1) Yes No Not known Diving student …… DS Open water ……...OW Advanced diver…….AD Divemaster ……...DM Specify : Dive instructor ….. DI Untrained …… .. UT Professional ……... PD Technical diver…...TD Not known ……. -
SCUBA: a Seaductive Diversion from Reality 20 17
SCUBA: A SEAductive DIVERsion from Reality 20 17 504.888.4882 Metairie Diving School, Inc. 4709 Airline Dr. Metairie, LA 70001 (between Clearview & Transcontinental) 46 Years and counting . Homo Aquaticus: Frequently sighted from the intertidal zone to depths in excess of 100’, this creature is slow-moving and somewhat clumsy in comparison to other marine life. Varying greatly in color and size, this animal can be identi- fi ed by a prominent, cylindrical shaped dorsal fi n. Page 2 www.harrysdiveshop.com | 504-888-4882 Table of Contents SCUBA is for YOU if 4 Getting certifi ed is EASY 5 Rental Prices and Policies 7 Medical Questionnaire 8 Our SCUBA Course Policies 10 Myths & Misconceptions 13 In-Water Orientation Dates 14 SCUBA Weekday Open Water Course 16 Accelerated SCUBA Course 17 Private Open Water SCUBA 18 Puchasing Equipment 19 Checkout Dive Weekends 20 Your EARS and diving 22 LEAD weights and you 23 Specialty Courses 26 SCUBA Rangers Kidz Summer Camp 28 Refresher - SCUBA Skills Update 30 Perfect Buoyancy & Underwater SMB deployment 31 NITROX – the breathing gas of choice 32 Advanced SCUBA Diver 33 Master Diver 34 Spearfi shing 35 RESCUE Diver 36 CPR / First Aid / DAN O2 Provider 37 Closed Circuit Rebreather (CCR) 38 Extended Range/Technical Diving 39 Who is HARRY? 41 Who is DAN? 44 Swimming Lessons with Swim-Smart @ Harry’s 46 Saturday LAP Swimming and SCUBA 48 Snorkeling LESSONS 50 Try SCUBA Saturdays 51 Page 3 www.harrysdiveshop.com | 504-888-4882 HARRY’S DIVE SHOP, INC. (Since 1971) Metairie Diving School, Inc. 4709 Airline Dr. -
Optimal Breathing Gas Mixture in Professional Diving with Multiple Supply
Proceedings of the World Congress on Engineering 2021 WCE 2021, July 7-9, 2021, London, U.K. Optimal Breathing Gas Mixture in Professional Diving with Multiple Supply Orhan I. Basaran, Mert Unal compressors and cylinders, it was limited to surface air Abstract— Professional diving existed since antiquities when supply lines. In 1978, Fleuss introduced the first closed divers collected resources from the bottom of the seas and circuit oxygen breathing apparatus which removed carbon lakes. With technological advancements in the recent century, dioxide from the exhaled gas and did not form bubbles professional diving activities also increased significantly. underwater. In 1943, Cousteau and Gangan designed the Diving has many adverse effects on human physiology which first proper demand-regulated air supply from compressed are widely investigated in order to make dives safer. In this air cylinders worn on the back. The scuba equipment with study, we focus on optimizing the breathing gas mixture minimizing the dive costs while ensuring the safety of the the high-pressure regulator on the cylinder and a single hose divers. The methods proposed in this paper are purely to a demand valve was invented in Australia and marketed theoretical and divers should always have appropriate training by Ted Eldred in the early 1950s [1]. and certificates. Also, divers should never perform dives With the use of Siebe dress, the first cases of decompression without consulting professionals and medical doctors with expertise in related fields. sickness began to be documented. Haldane conducted several experiments on animal and human subjects in Index Terms—-professional diving; breathing gas compression chambers to investigate the causes of this optimization; dive profile optimization sickness and how it can be prevented. -
Instructor Development Course Award Winning Padi
INSTRUCTOR DEVELOPMENT COURSE AWARD WINNING PADI 5-STAR IDC CENTRE www.facebook.com/IDCKohTaoThailand WELCOME TO THE INSTRUCTOR DEVELOPMENT COURSE!!! MEET YOUR COURSE DIRECTOR: Marcel van den Berg Platinum PADI Course Director / EFR Instructor Trainer #492721 "Let me introduce myself; my name is Marcel van den Berg. I’m originally from the Netherlands and have now been living in Thailand for almost a decade. In 2003, I decided to take a diving course to experience the hype that everyone was talking about. It only took me 20 minutes on my first Open Water dive to realize that you can have a fantastic career in this amazing underwater realm. From that moment on, I actively pursued my career in diving. I hold a tremendous passion towards diving which I have been able to share with others during my teaching and turning thousands of students into divers. It didn’t take long to decide to advance in my career and I continued my education towards Course Director and Specialty Instructor Trainer. Within the first year I achieved Platinum Status from PADI and kept that until this day. Now I’m able to teach the success I had to new Instructors and I look forward to share my passion and success in Diving with you! Come and join us for your professional diving training at Sairee Cottage Diving and let me teach you an award winning program that far exceeds the minimum standards of the dive industry” Marcel van den Berg 2 Teaching Experience: Taught over 4500 students on all PADI levels Certifications: PADI Platinum Course Director #492721 Emergency