Scuba cylinder valve manufactures release new safety feature with color indicator

Koh Tao, Thailand - Big Blue Tech return from their last expedition and begin the process of servicing their technical diving equipment in preperation for the next session of technical diving.

One of the tasks include the replacement of our Halcyon valves which we have been having a lot of problems with in terms of handwheel stripping and getting service parts for the proprietary design which caused us a lot of problems when on expedition.

We decided to order a twinset manifold system from Xs Scuba which included a new safety feature. This new feature has a colour inidication which shows the posistion of the tank valve at either fully open, fully closed or half way. This feature uses two sliding inserts in the handwheel that are green and red. When the tank is closed the red colour is showing. As the valve is opened the red colour retracts and the green slowly moves in to replace it. When the cylinder is in the open posistion it shows only green.

For technical diving we think the colour system might not be ideal as colour disapears at depth but certainly as a tool before entering the water and for shallow depths during gas exchange.

Experienced dives graduate from the TDI Intro to Tech course in Thailand

Koh Tao, Thailand - Big Blue Tech celebrates the graduation of Yvonne Fries, Helen Artal, Thomas Hallstrom and Duncan Tyler from a TDI Intro to Tech course conducted by TDI Instructor James Thornton-Allan and assisted by Andrew Cavell and Ash Dunn over various dive sites on Koh Tao Island in Thailand.

The TDI Intro to Tech course is designed to introduce the foundation control skills of buoyancy and trim which will be built on during the rest of their training on the way up to TDI Extended Range which is the fourth level in the technical diver curriculum. The skills train a dive to maintain perfect control in a set of technical diving gear while keeping a constant horizontal body position in the water without the use of hands. The skills learned include unique skills like fining backwards and neutral buoyancy skills like no mask swim, regulator exchange, air sharing, long hose use etc.

While this course is not a prerequisite to become a technical diver we feel the skills learned are essential. One of the early goals in our training is to avoid contact with anything other then the equipment you carry once you enter the water. In Koh Tao there are a lot of buoy lines or permanent lines which may be tempting to hold on to during simulated stops but prevents the diver from focusing on controlling themselves in the water. In instances where the down line may not be available it’s essential a future technical diver be intimate with their diving equipment and how to use that equipment effectively.

The students were also exposed to air consumption calculations, basic dive planning without the use of a computer that tracks no decompression limits which is based on the philosophy of “Plan the dive, Dive the plan” which has fallen by the side recently with the advent of gas switching computers. Although the students will be provided with a gas switching computer later on it’s this course which teaches them how to rely and trust a dive plan which might be their back-up decompression information in the future.

In the end the students conducted 4 dives and received their certification after a final exam. The divers will progress on to their Advanced Nitrox course tomorrow. More information regarding the intro to tech course can be found here: TDI Intro to Tech Diver Course

This is the third product recall this year from technical diving manufacturers. Already Halycon and OMS have voluntarily recalled their products throwing the entire technical diving equipment manufacturing industry in question.

In cooperation with the US Consumer Product Safety Commission, Dive Rite is issuing a voluntary recall on various Dive Rite Wings.

The Over Pressurization Valve (OPV) springs found on Dive Rite wings manufactured between June 2006 and October 2008 may rust and fail allowing the buoyancy compensator devices to leak. The wings may be red, blue or black in color and have serial numbers falling between 42000 and 72000. The following models are affected by this recall: Travel, Venture, Rec, Trek, Classic, Nomad and Super Wings It does not affect EXP or 360-branded wings. The recall does not affect lift bags, surface marker tubes or other Dive Rite inflatable devices.

Due to the serious implications of an OPV spring failure, consumers should stop using the recalled diving equipment and have the OPV spring immediately replaced by a Dive Rite authorized dealer or distributor.

More information can be viewed on their website.

Israel Navy commander Adm. Eliezer Marom has convened a panel to investigate how a soldier in the advanced stages of training as a naval commando drowned early yesterday in a routine three-meter training dive at Ashdod Port. Sgt. Gal Azoulay, 19, of Zichron Yaakov, was diving at the time with the rest of his team members after having finished sixteen months of training for the elite Shayetet 13 unit. The exercise was designed to simulate combat diving in an enemy port.

The exercise was performed in pairs and was supposed to last about two and a half hours. After about an hour and a half, Azoulay took the role of lead diver of a pair. When his partner realized that he was not responding to routine contact that the two were to maintain about every minute, he followed emergency procedures involving bringing his partner to the surface of the water and fired a flare gun to mark their location.

Within a short time, a boat arrived and began to administer medical treatment to Azoulay, who was unconscious. Resuscitation efforts continued in the ambulance on shore for some 40 minutes.

En route, a physician joined the team and treated Azoulay. The diver was pronounced dead before arriving at the hospital.

A senior navy source said the dive was a part of a series of routine training exercises and that initial findings indicated that there was nothing out of the ordinary in the exercises being performed at the time of the incident.

Commanders and medics were present as required and the divers were not exposed to unusual cold. There was also no indication during the training that Azoulay had any health problems.

The investigative panel appointed by Marom will attempt to determine the cause of Azoulay’s death, and will consider the possibility of a technical problem with his diving equipment, a health problem that had gone undiagnosed or human error. The investigation will also look into whether Azoulay’s training partner acted appropriately.

Marom has ordered a temporary halt to all diving training in the navy until Azoulay’s equipment is inspected.

Members of the unit undergo thorough medical testing before their enlistment as well as in the course of their training.

Before each exercise, they are questioned about the state of their health and before strenuous training, they undergo examination by a doctor.

Azoulay’s death was the first fatal training accident in the unit since 1995. Azoulay’s funeral will take place today in Zichron Yaakov. He was posthumously promoted to the rank of staff sergeant.

Source

A good diving equipment configuration should allow for the addition of items necessary to perform a specific dive without interfering with or changing the existing configuration. Diving with the same configuration not only helps solve problems, it prevents them.

Following is a list of equipment as that is of prime consideration:

1. Mask: Low Volume mask reduces drag and requires less effort to clear it of water.
2. Primary Regulator: Quality regulator that will be passed to an out-of-air diver.
3. Short Hose: Should be long enough to breathe comfortably, but not long enough to bow and create drag.
4. Back-Up Regulator: Quality regulator that a diver will use as a reserve either in the event of a failure or in an air-sharing episode.
5. Long Hose: Optional in shallow, open water diving, but mandatory in deeper or overhead diving; the long hose simplifies air sharing. When used, the long hose, along with the primary regulator, should ALWAYS be placed on the diver’s right post.
6. Back-Up Lights: Tucked away to reduce drag but still allow for easy one-hand removal.
7. Goodman Handle Light Head: Allows for hands-free diving while allowing the diver to easily direct the focused light beam.
8. Thermal Suit: Appropriate to keep diver alert and comfortable.
9. Crotch Strap: Allows for custom fit, and supports two D-rings: one works as a scooter attachment point; (divers should not hang equipment here as it would hang too low); and one further up, closer to the back plate, which works for towing additional gear. The crotch strap also holds the BC in position and prevents the BC from floating up away from the body.
10. Hood: Where necessary to keep diver alert and comfortable.
11. Mask Strap: Strong strap that will resist breaking.
12. Necklace: Designed to hold the back-up regulator within easy access.
13. Corrugated Hose: Should be just long enough to allow for ear clearing and potential dry suit inflation while actuating inflator, but not so long that it drags or entangles easily.
14. Power Inflation Hose: Should be long enough for a diver to easily use his/her corrugated hose, but not long enough for it to bow or otherwise create excess drag.
15. D-rings: No more than two on the chest, positioned to reduce the drag of attached items; one hip D-ring to hold the pressure gauge.
16. Pressure Gauge Hose: Custom hose allows a diver to easily read the gauge after unclipping, but does not bow or dangle, thus avoiding excess drag.
17. Pressure Gauge: Quality brass gauge should be easy to read and reliable.

18. Knife: Waist-mounted in front, near the center of the diver’s body, for easy access.

19. Pockets: Hip-mounted to reduce drag.

20. Knobs: Soft knobs (to limit risk of breakage) should be opened completely.
21. Valve: Contingent on environment and diving activity. Dual orifice valves (H or Manifold) are an excellent way to increase safety and redundancy.
22. Burst Disks: Use of double disks prevents accidental burst failure.
23. Buoyancy Compensator: Adjusted based upon needed lift whether one is diving single or double tanks. Buoyancy should be sufficient to float equipment by itself while at the surface.
24. Cylinders: Contingent on environment and diving activity.
25. Harness and Backplate: Designed to hold the diver snugly to their rig while reducing drag and increasing control.
26. Primary Light: Hip-mounted, canister-style light; this is optional in some environments, but valuable in nearly all.
27. Alternate Lift Device: Lift bag, diver alert marker, or surface life raft, for open water diving. Halcyon’s MC system allows for storage in backplate pack for increased streamlining.
28. Overboard Discharge: Also known as a P-Valve; used with a condom catheter by male divers to allow for urination during long dives with a dry suit.
29. Bottom Timer: Wrist mounted to eliminate drag and entanglement.
30. Watch: Wrist-mounted, with a functional stopwatch to allow for timing safety or decompression stops.
31. Compass: Wrist mounted to eliminate drag and entanglement.
32. Fins: These should have no attachment buckles that can break. Replace with a more robust connection.
33. Guideline Reel: Use is contingent on the diving environment; it is usually mounted on the rear crotch strap D-ring for streamlining and to reduce clutter. Spools and other guideline devices are usually kept in the diver’s hip-mounted pocket.

Source: GUE Fundamentals of Better Diving Manual

The U.S. Consumer Product Safety Commission and Health Canada, in cooperation with the firm named below, today announced a voluntary recall of the following products. Consumers should stop using recalled products immediately unless otherwise instructed.

Name of Product: Guardian Full-Face Masks

Units: About 900

Manufacturer: Undersea Systems International Inc., dba Ocean Technology Systems, of Santa Ana, Calif.

Hazard: If significant pressure is applied vertically to the top and bottom of the visor clamp, the clear plastic visor may dislodge causing the mask to flood.

Incidents/Injuries: Ocean Technology Systems has received three reports of visors dislodging. No injuries have been reported.

Description: This recall involves the Guardian full-face mask which is a scuba diving mask that incorporates the second stage regulator into the mask allowing it to cover the diver’s full face.

Sold by: Direct sales and diving equipment retailers nationwide from March 2009 through August 2009 for $800.

Manufactured in: United States

Remedy: Consumers should immediately stop using the diving masks and contact Ocean Technology Systems to receive a free repair. Ocean Technology Systems is providing consumers stainless steel clamps to secure the plastic visor.

Consumer Contact: For additional information, contact Ocean Technology Systems toll-free at (877) 270-1984 anytime, or visit the firm’s Web site at www.otscomm.com. Consumers also can email the firm at OTSrecall@otscomm.com

The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed.

Name of Product: Diving Air Hose for Dry Suits

Units: About 65,000

Manufacturer: SI Tech AB, of Brastad, Sweden

Hazard: The hose contains an insert that can dislodge during diving and restrict air flow to the diver, posing a drowning hazard.

Incidents/Injuries: SI Tech has received six reports of hose inserts dislodging, including one that was involved in the death of a diver in Los Angeles, Calif.

Description: This recall involves a dry suit inflation hose that connects a diver’s dry suit to the air supply and allows for the pumping of air into the suit to set up a positive pressure arrangement to help keep it watertight. The hose contains an air flow restricting insert that may be either black, blue or green in color. The batch code is stamped on the threaded metal end of the hose. They were sold with dry suits and also sold separately. Contact SI Tech for a list of batch codes included in this recall or visit the firm’s Web site, www.sitech.se

Sold at: Diving equipment retailers and distributors nationwide from July 2006 through February 2009 for about $45.

Manufactured in: Sweden

Remedy: Consumers should immediately stop using diving equipment that contains the recalled low pressure inflation hoses and contact SI Tech for the location of an authorized dealer for a free repair which involves removal of the hose insert, or to receive instructions on how to repair the hose.

Living and working in a tropical paradise takes responsibility, we take this responsibility by supporting local efforts with technical support and logistics. We donate boat space, diving equipment and facilities for individuals conducting ecological assessments, clean ups, bio rock initiatives and training.

We also use our popular news section to create awareness of global ecological problems.

Underwater Cleanup

Big Blue Tech crew supports and volunteers underwater and beach cleanups monthly to help keep Koh Tao clean. Being technically trained means we have the skills and equipment to stay down much longer and recover large and dangerous items.

Beach Cleanup

We’re always happy to clean the beach and roads around our area, we even donate the Deep Jeep to help cart the garbage away for disposal. We’re not a particularly messy company but we feel its our responsibility to clean up since we brought the technology and mess here in the first place. And there’s usually great parties after.

Awareness

Our resort has stopped serving food items that are listed through Project Aware, we make sure to educate divers on the effects of humans on the underwater environment and are always willing to give free lectures and seminars to the local community. We also have our local staff educate their friends and family about the effects of waste and pollutants.

Wreck Preservation

We need our wrecks, when we have the time we work to preserve the items on the wreck before the sea bed burry them. We also help to educate people about being responsible and careful with what to remove from wrecks and what should remain. Quite often we dedicate dives to removing hazards and fish traps from the wrecks to protect marine life and keep the wreck clear and safe to dive.