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Topic: Diving cylinder

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Scuba

	Diving cylinder - Wikipedia, the free encyclopedia
		Diving cylinders are typically filled in the range of 186 to 300 bar (2700 to 4300 psi, or 18.6 to 30.0 MPa) and have a volume of 1.5 to 18 litres or a gas carrying capacity of 850 to 3600 litres (30 to 120 ft³).
		Diving cylinders until the 1970s, before pressure gauges on regulators came into common use, often used a mechanical reserve mechanism to indicate to the diver that the cylinder was nearly empty.
		In recreational diving for example, it is recommended that the diver plans to surface with a reserve remaining in the cylinder of 500 psi, 50 bar or 25% of the initial capacity, depending of the teaching of the diver training organisation.
	en.wikipedia.org /wiki/Diving_cylinder (2813 words)

	NOAA Ocean Explorer: Scuba Diving
		Scuba diving is the most extensively used system for breathing underwater by recreational divers throughout the world, and in various forms is also widely used to perform underwater work for military, scientific and commercial purposes.
		Cylinders for scuba diving are made of steel or aluminum alloy, and are designed to operate safely at pressures ranging from 2,250 to 3,500 psi (pounds per square inch).
		The primary function of the “demand regulator” attached to the diving cylinder is to reduce the high-pressure gas supplied by the scuba cylinder to the ambient pressure surrounding the diver at depth.
	oceanexplorer.noaa.gov /technology/diving/scuba/scuba.html (690 words)

	UKDivers.net - Cylinders
		Aluminium cylinders are easily identified by their flat bottom.
		Minor oxidation on the inside of a steel cylinder may be best left untreated due to the fact that the process of removing it might actually weaken the cylinder more than the oxidation itself.
		Provided that the cylinder valve is washed in fresh water after use and is kept clean, there should be no need for it to be serviced between the intervals of cylinder test.
	www.ukdivers.net /equipment/cylinders.htm (1701 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		In Europe, the size of the diving cylinder is classified in terms of water capacity, this being the volume of water a cylinder would hold if filled.
		Diving cylinders come in many sizes from 3 to 20 litres water capacity, with the most common sizes used being 10, 12 and 15 litres.
		The cylinder valve is fitted into the neck of the cylinder and is provided with an o ring seal so that the diving regulator can be connected to it.
	www.compsoc.man.ac.uk /~musac/equipment/kit/tank.htm (376 words)

	Scuba Diving Cylinder
		diving cylinder and a diving regulator but consists of other mechanisms that safely recycle the exhaled gas.
		attached to the diving cylinder is to reduce the high-pressure gas supplied by the scuba cylinder to the ambient...
		Each scuba diving trip offers something different from the one before, thanks to the diverse marine life living in the oceans of the world.
	www.pleasurediving.co.uk /scuba-diving-cylinder.html (719 words)

	Diving equipment - Cylinder (Site not responding. Last check: 2007-11-07)
		It is worth selecting your cylinder carefully because it is the single component on which you are going to expend the greatest effort moving from place to place, on and off boats, in and out of car boots and up and down dive-boat ladders.
		An aluminium cylinder with the same water capacity and working pressure as a steel cylinder will be larger and heavier.
		The 7-litre cylinder is lighter out of the water, but will be more negatively buoyant in the water, because of its lower displacement.
	aux.shenkar.ac.il /2001/group25/cylinder.html (443 words)

	Jargon Buster (Site not responding. Last check: 2007-11-07)
		Apart from serving as the cylinder attachment the 1st Stage is also a pressure reducing valve that reduces the cylinder pressure (200+ BAR at the start of a dive) to a lower 10 to 15 BAR pressure.
		During a dive nitrogen is forced into a divers body due to the pressure, when returning to the surface this nitrogen disperses again.
		Diving dry suits have air valves that the diver uses to inflate/deflate the suit, as well as insulation the suit can also be used for buoyancy control.
	members.aol.com /ecwdivers/AtoZ.htm (2830 words)

	Diving Cylinder
		cylinder industrial gas cylinder diving cylinder special gas cylinder cylinder valves and regulators gas cylinder quad...
		function of the "demand regulator" attached to the diving cylinder is to reduce the high-pressure gas supplied...
		of air pressure from the diving cylinder to the diver is accomplished...
	www.pleasurediving.co.uk /diving-cylinder.html (681 words)

	SAFETY NOTICES
		Aluminium cylinders fail less often, but when they do the cause is either excessive corrosion, often in the thread area or beneath the boot, or from a crack discovered during a visual inspection.
		Cylinders should be inspected frequently, both internally and externally, by a technician who actually knows what to look for in the way of damage.
		Cylinder owners are probably most guilty of not regularly removing and cleaning the cylinder beneath the boot; and, for salt water divers, not washing and drying the valve/cylinder interface.
	www.scubaengineer.com /stop_pressx.htm (4799 words)

	Fill Express -- Frequently Answered Questions About Filling SCUBA Cylinders
		In addition, cylinders containing mixtures with MODs less than 100 feet should have the MOD marked in 3-inch-high numbers such that the MOD is clearly visible during the dive.
		Once a cylinder and valve have been prepared for nitrox service, a special sticker (or often a special version of the evidence of visual inspection sticker) is affixed to the cylinder.
		Luxfer has an extremely detailed statement of their position on aluminum cylinders and oxygen which argues any cylinder that contacts more than 23.5% should be oxygen clean.
	www.fillexpress.com /library/fillfaq.shtml (3058 words)

	Worthington X-Series SCUBA Diving Tanks
		Both cylinders are of similar product quality, use the exact same valve and boot, and in actual diving the dimensions and buoyancy characteristics are indistinguishable from each other.
		We observe that new PST cylinders had a bit more polished brighter cosmetic appearance than the Worthington cylinders, but after a few dives the appearance of both brands of cylinder is pretty much the same.
		This is how divers have for years been using overfilling with low-pressure cylinders, but with the advent of the large-capacity high-pressure cylinders, it eliminates the concerns regarding overfills.
	www.diveriteexpress.com /gas/steel.shtml (1428 words)

	Optics Express
		We present numerical experiments of light scattering by a circular dielectric cylinder embedded in a stratified background, using the Green's tensor technique.
		T.C. Rao and R. Barakat, "Plane-wave scattering by a conducting cylinder partially buried in a ground plane II: TE case," J. Opt.
		Zhuck and A. Yarovoy, "Two-Dimensional Scattering from an Inhomogeneous Dielectric Cylinder Embedded in a Stratified Medium: Case of TM Polarization," IEEE Trans.
	www.opticsexpress.org /oearchive/source/34836.htm (400 words)

	Dominican Republic Scuba Diving reports, links and information
		Dives leave from the beach in the school catamaran which held 20 divers comfortably, entry is by giant stride from the rear and re-entry is up a short ladder, bottled water is provided and I would strongly reccommend sunscreen, t-shirt and hat as the sun is very strong.
		Dive brief was held as 9.00am and you would be back in the dive centre after the dive at 11.00am.
		On my second dive the housing button that had been hit and driven into the camera compressed itself at depth (the spring was also damaged) and locked up the camera, and on the 10th dive I had let the camera get overheated in it’s rinse bucket between dives and it fogged badly upon immersion.
	www.debbiesdominicantravel.com /scuba.html (14302 words)

	Scuba diving at opensource encyclopedia (Site not responding. Last check: 2007-11-07)
		In short, scuba diving is an underwater activity practiced with the help of equipment worn by the diver which provides a supply of breathing gas allowing the diver to remain underwater for long periods.
		surface supplied diving - mainly used in professional diving for long or deep dives where an umbilical line provides the diver with breathing gas, warm water to heat diving suits and voice communications with the surface.
		SCUBA diving is featured in films such as The Abyss, James Bond in Thunderball and Fantastic Voyage.
	www.wiki.tatet.com /Scuba_diving.html (737 words)

	wreckrespect.org.uk (Site not responding. Last check: 2007-11-07)
		ingressive short, diving suit dive is an underwater radiant energy worldly-wise at any cost the servants upon plumbing dusty all through the diver which provides a subvention as for breathing gas allowing the deep-sea diver to remain underwater whereas giant periods.
		the Aqua-Lung - a deployment consisting relating to a dam tressure diving cylinder containing a wind-shift line nervous strain breathing gas and diving regulator that supplies the cannon amidst that smash hit at a demands equal to vice the astuteness as regards the diver.
		This pursuit respecting diving hood hawse hook is known as 'open circuit' forasmuch as exhaled rocket fuel is embarrassed over against the environment.
	www.wreckrespect.org.uk (335 words)

	NPC Journal 4(1), Jan 1987: Diving Cylinder Testing (Site not responding. Last check: 2007-11-07)
		Under the Health and Safety regulations it is the owner's responsibility to ensure that the correct inspections are carried out at the prescribed intervals and that the inspections themselves are carried out correctly to BS 5430.
		However, after consideration by the HSE, a concession was agreed that cylinders manufactured to this specification could be utilised for diving provided that a periodic inspection was carried out annually and a hydraulic test every 2 years.
		Volumetric expansion test :- cylinder is pressurised with water to test pressure and the volumetric expansion of the cylinder measured by either monitoring the quantity of water required to pressurise the cylinder, subsequent to filling, or by utilising a water jacket around the cylinder.
	www.pennine.demon.co.uk /NPC/1987/BOTTLES.HTM (521 words)

	NSS-CDS -- Training -- Introduction-to-Cave Diving Course Description
		The Introduction to Cave Diving course is not intended to train divers for all facets of cave diving.
		Minimum cylinder size is 71.2 CF with a minimum starting pressure of at least 2000 PSI regardless of cylinder size utilized.
		This document is produced by the Cave Diving Section of the National Speleological Society, Inc., a non-profit tax-exempt organization dedicated to the conservation, study, and safe exploration of underwater caves.
	www.caves.org /section/cds/introcv.htm (589 words)

	Lloyd Bailey's Scuba and Watersports - PRESSED STEEL TANKS
		PST has been designing these scuba cylinders with the novice, advanced diver and professional in mind.
		The cylinders specification will be PST 's exclusive exemption, E-9791 and all E-Series will be hot dip galvanized.
		All cylinders are oxygen cleaned according to CGA G-4.1 from the factory.
	www.lloydbaileysscuba.com /pst.html (566 words)

	Scuba Instructor Training - American Diving - Diving the South Texas waters of the Gulf of Mexico
		American Diving is the complete scuba dive center in Texas with all levels of instruction, equipment sales, rentals and service, local dive trips, international dive travel, and unique technical training opportunities.
		Dive from our USCG documented and inspected boats- including the latest in life support equipment and a single-lock monoplace chamber.
		Instruction at American Diving and Ocean Systems International stems from the knowledge and discipline of the offshore saturation dive teams.
	www.divesouthpadre.com (358 words)

	XtremeXpress.com - Cave Pictures, News & Stories - - (Site not responding. Last check: 2007-11-07)
		Cave diving is a type of technical diving in which specialized SCUBA equipment is used to enable the exploration of natural or artificial caves which are at least partially filled with water.
		The Cave Diving Group (CDG) was established informally in the United Kingdom in 1935 to organise training and equipment for the exploration of flooded caves in the Mendip hills of Somerset.
		The definitive volume on the history of UK cave diving is Martyn Farr's The Darkness Beckons, ISBN 0939748320, which has been through 2 editions (1980, 1991) and was written by a major figure in UK diving at a time when many of the original participants were still alive and available for interview.
	www.xtremexpress.com /modules/edito/edito.php?idedito=13 (2221 words)

	History of the steel cylinder in US Diving (Site not responding. Last check: 2007-11-07)
		The steel cylinder which is negative when empty supplies a keeling action for the divers vest.
		Ralph Erickson founder of PADI, member of the Diving Hall of Fame, in private communication told me why he thought the AmBios Evolution was the only BC he would dive amongest it provided airway protection a concpet with which he was very familiar.
		The only thing standing between the U.S Navy diver being instructed in the safe assembly of their dive gear between being allowed access to the information that cylinder selection or counterweighting produces the finest Life Jacket in the world, are those who are invested in buoyant cylinders.
	www.watersafetyandsurvival.com /steelcylinderhistory.htm (1016 words)

	Diving Holiday Scuba
		Did you know that The reduction of air pressure from the diving cylinder to the diver is accomplished in two steps.
		co.uk maldives padi diving holidays tropical spa relaxation, professional padi scuba diving and holiday activities on royal island, set amongst the lush vegetation and crystal clear waters of the...
		Maldives PADI Diving Holidays Tropical spa relaxation, professional PADI scuba diving and holiday activities on Royal Island, set amongst the lush vegetation and crystal clear waters of the Maldives...
	www.gonetoseascuba.com /divingholidayscuba (1735 words)

	Aluminium SCUBA Diving cylinders T6061 Aluminum Alloy Cylinders \| Aluminum Scuba Cylinder Manufacturers \| Scuba ...
		Scuba diving is growing in popularity worldwide largely as a result of improvements in scuba diving equipment.
		The Scuba Cylinder remains one of the most important pieces of equipment when it come to diving, because it carries your all important supply of air, without which you cannot survive.
		In fact the quality of Ali-Tek cylinders is paramount and this is checked at every step of the manufacturing process, from the initial raw material to the final product, to ensure a superior scuba diving cylinder...
	www.ali-tek.com (582 words)

	Deep Down Diving - Regulator & Cylinder Servicing (Site not responding. Last check: 2007-11-07)
		With our servicing teams combined experience of servicing totaling more than 20 years you can ensure that your equipment is serviced to the highest specifications using only manufacturers approved parts.
		Your regulators are life-support equipment and are treat that way by our experienced technicians ensuring that they are set to the fine tolerances established by the manufacturers.
		With parts held in stock and servicing approval from all of the recreational and commercial diving equipment manufacturers we can provide you with a 72 hour turnaround by mail order and 48 hour turnaround by personal delivery.
	www.nobubbles.com /Servicing (120 words)

	Diving equipment - Cylinder (Site not responding. Last check: 2007-11-07)
		This significantly improves the diver's swimming position while submerged, but is not especially suited to maintaining a face-up position at the surface.
		Wings are well-suited for use with larger and heavier cylinder sets, as they position the buoyancy close to the main centre of dead weight.
		While solving the lift problem this introduces the complexity of a second inflator and the need to control two separate buoyancy chambers during the dive.
	aux.shenkar.ac.il /2001/group25/bc.html (424 words)

	The Underwater World scuba diving software : Demo : Diver's Log Book : Cylinder
		The most important part of your diving equipment is a cylinder.
		You can define all characteristics, from the cylinder type to the differences in pressure at the beginning and at the end of your diving.
		At the top of this window you have to choose the characteristics of the cylinder, its working pressure and volume.
	www.divingsoft.com /demo/divers-log-book/cylinder.htm (142 words)

	Amazon.com: Scuba Diving: Books: Jack Jackson (Site not responding. Last check: 2007-11-07)
		It begins with a clear, concise explanation of the science of diving-how water and gas affect the human body underwater-and includes chapters on equipment, training, dive planning, safety, and the various types of diving.
		Jack Jackson is a veteran diver and author of several books on diving.
		dive planners, second stage mouthpiece, emergency cylinder, primary second stage, yoke connector, regulator first stage, diving computers, octopus rig, scuba cylinders, diving cylinder, power whistles, air resuscitation, oral inflation, purge button, decompression tables, your weight belt, dive training, diver ascends, fin strokes, decompression stops, diver descends, divers should, recreational divers, boat cover, exposure suits
	www.amazon.com /exec/obidos/tg/detail/-/0811729273?v=glance (513 words)

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