THE NOAA DIVING SAFETY BOARD HAS DIRECTED THE NOAA DIVING COORDINATORTO ISSUE “DIVING SAFETY BULLETINS” AT SUCH TIMES AS HE SHALL DEEMNECESSARY TO RAPIDLY ADVISE ALL NOAA DIVERS OF IMPORTANT MATTERS WHICHRELATE TO DIVING SAFETY.
operating policies and procedures, recommended by the Safety Board, inadvance of formal Regulation changes, and shall promulgate changes inadministrative policies and procedures when necessary.
The NOAA Diving Regulations – Safety Rule #14c – require each diverto wear an “adequate inflatable vest or other flotation device”while diving.
Variable-volume suits (such as Unisuits and Viking
Suits) provide a diver with adequate flotation and a means of finebuoyancy control.
However, the Safety Board has determined that,
where power inflation and exhaust valves/controls for these suitsare located upon the chest, the use of an additional front-mountedbuoyancy compensator is an unsafe practice.
The Safety Board has commenced efforts to develop NOAA guidelinesand standards for “Exposure Suits and Compensating Systems”.
results of these efforts will be an integral part of a recommendedchange to the Equipment Section of the NOAA Diving Safety Ruleswhich will establish a new policy regarding variable volume suits.
For approval to use variable volume suits, any NOAA Diver musthave:
a. satisfactorily completed a minimum of three
hours of training in the use of these suits
(two hours of which must have been in openwater) from qualified persons designated bythe NOAA Diving Coordinator; or equivalentprior experience verified by a qualifiedNOAA Unit Diving Officer.
b. Demonstrated proficiency in use of such
suits through a checkout dive with aqualified NOAA Unit Diving Officer or hisdesignee.
The Safety Board has recommended a change in operating proceduresfor the Scuba Diving Teams, Section 4(b)(2), as follows:
Except under emergency conditions, the buddy
System of at least two (2) divers will always be required.
CONDITIONS ARE SUCH THAT THE PROBABILITY OF SEPARATION IS HIGH,SUCH AS LOW VISIBILITY, SOME FORM OF DIRECT CONTACT (PHYSICAL ORVISUAL) BETWEEN DIVERS SHALL BE MAINTAINED.
TIMES BE WITHIN PHYSICAL OR VISUAL DISTANCE FROM OTHER QUALIFIEDMEMBERS OF THE DIVE TEAM SUCH THAT ASSISTANCE MAY BE EASILYRENDERED IN THE EVENT THAT TROUBLE OCCURS.
diving is shallow with a restricted area, with water conditionsof low velocity and turbidity, the buddy diver may remain at thesurface fully equipped, maintaining contact with the workingdiver at all times.
A surface attendant shall be present in the
immediate area any time diving conditions require it.
For purposes of the NOAA Diving Regulations and as a matter ofofficial policy, the Safety Board has approved the followingdefinition of a “Dive”.
A dive is that time and activity spend on and beneath theSurface of the water by a person equipped with diving gear. A dive is completed when the diver (a) leaves the water, or(b) returns to the surface and then resubmerges to performa different activity.
During initial training, no more than one
dive will be credited for each cylinder of air used.
The Safety Board has recommended a new Diving Safety Rule which willbe incorporated into the Regulations.
resuscitator, capable of ventilating a non-breathing person,shall be at each dive site.
personnel) shall be trained in the use of this equipment.
The requirement for oxygen resuscitators at each dive site hasbeen a mandatory imposed by the Diving Coordinator in the pastseveral months.
Poseidon Regulator Hose Failure/Discontinued Use ofPoseidon Regulators
Several years age we (NOAA) experienced at least three failures ofhoses (dry suit inflator and breathing air) on Poseidon regulators.
The situation was believed to be rectified after all hoses werereplaced on regulators with serial numbers specified by the supplier asbeing suspected of being defective.
weeks demonstrate that there is still a problem with these regulatorswhich could result in serious accident.
DISCONTINUE USE OF POSEIDON REGULATORS UNTIL FURTHER NOTICE.
Several Unit Diving Officers are working with NOAA Diving Officepersonnel in an attempt to rectify this situation in the shortestpossible time.
Contributions to this effort will be appreciated and
should be addressed to the NOAA Diving Office.
It should be remembered that the loss of any of the hoses (dry suitinflator or octopus regulator) results in loss of air supply to thediver.
For those of you who may believe that discontinued use of theseregulators is unnecessary, I offer the following convincing events forconsideration.
From “The NOAA Diver” Vol. 2, Number 1, April 15, 1977
The following is a excerpt of a memorandum received from NMFSdiver Bob Shultz at Kodiak, Alaska, pointing out a potentialproblem with the Poseidon regulator:
“Recently during an environmental assessment of Wilson Arm,I experienced a very dangerous malfunction of my Poseidonregulator system.
boom that sounded and felt like a small bore shotgun goingoff near my head.
blown from my mouth and I was forced to make a free ascent.
Apparently, what had happened was the pressed metal fittingwhich surrounds the air hose that fits over the fluting onthe stem of the regulator had given way enough to allow theair pressure to cause ejection of the regulator from thehose.
Since the regulator system had recently been
inspected and reconditioned, this problem is probablyattributable to an inherent weakness in the design
The Unit Diving Office at Auke Bay, Lou Barr, has noted that this maybe a chronic problem as he has knowledge of a similar Poseidon failureprior to the one experienced by Schultz.
that all hoses on the Poseidon should be carefully checked and theregulators used with an extra amount of caution.
As Lou Barr further notes, and we completely agree:
“This is an excellent example of the type of unforeseenemergency that can occur during an otherwise routinedive, and points out the need to have thoroughly trainedand competent divers who can hand such emergencies.”
From a November 22, 1977, memorandum from Tom McKinnon toLaboratory divers in Alaska.
At a depth of 85 ft it began with a loud ringing crack, thenthe sound of bubbles.
incident flashed in my mind and I instantly recognized myproblem.
tank and weight belt and started for the surface.
expanding air in my unisuit accelerated my ascent.
all air from my lungs around 60 ft and started to black outwhen I saw the surface from around 40 ft.
ascent I grabbed the unisuit zipper and pulled it to releasesome of the air.
The entire incident probably took less than
20 seconds, but had I delayed either by not immediatelyrecognizing the predicament or by groping for straps orbuckles, these details would probably be speculative orsecond-hand.
I have since put my Poseidon regulator on the
shelf and have advised all other Poseidon diehards to do thesame.
One incident is a freak, two is a tendency, and three
From an account of an incident occurring to Robert Budke inAlaska (July 1979)
I had just finished a dive and had made my exit onto a floatwhen I hear air escaping.
regulator and found the inflator hose was loose and hadslipped partway off the spigot fitting coming from the firststate of my Poseidon regulator.
hose back on it blew completely off.
I have been an active diver for many years and felt that myhandling of diving equipment to be no better or worse that
most divers, so I don’t feel we can attribute this incidentto poor equipment handling.
From an account of an incident involving a trainee diver atWoods Hole, MA
At a depth of approximately 40 feet the “octopus” regulatorblew off of the first stage with a “bang”.
air to the regulator in her mouth. She immediately receivedair from her buddy’s octopus and they ascended together.
Poseidon Regulator Hose Failure/Replacement ofPoseidon Intermediate Breathing Hoses and UnisuitInflator Hoses
NOAA Diving Safety Bulletin #79-2 (July 12, 1979) instructed NOAAdivers to “discontinue use of Poseidon regulators until furthernotice.”
This Bulletin includes instructions which will enable divers
to identify potentially faulty hoses and to obtain replacement hoses.
The attached announcement from Parkway Fabricators includes diagrams ofthe “old” (potentially defective) and new (O.K.) hoses.
state fitting is the key which will enable identification of therespective hoses.
Note the space between the pressed metal fitting and
The “new” hoses have a space of approximately 2
mm, while the two fittings on the “old” hoses meet.
identification applies to both intermediate breathing hoses and toUnisuit inflator hoses.
In December 1977 Parkway Fabricators announced the recall of PoseidonCyklon 300 regulators with serial numbers 15024 through 16523 and 18050through 18549 because of possible defect in the hose fittings.
these regulators are serviced, exchange of hoses is highly probable,therefore do not depend on serial numbers alone to identify potentiallydefective hoses.
After potentially defective hoses have been replaced
or existing hoses have been confirmed as being acceptable, you mayresume use of Poseidon regulators.
Again it should be remembered that the loss of any of the hoses inquestion results in loss of air supply to the diver.
Two additional recommendations are appropriate here:
Pay attention to all recalls or announcements relating todefective, potentially defective, or unsafe equipment.
Initiate a means of alerting all NOAA divers of hazardousequipment or practices.
The new address and telephone numbers of the NOAA Diving Office are:
Recall of U.S. Divers Calypso “J” and Calypso VI
Regulators/Replacement and Repair of Regulators2.
Chest X-Rays – NOAA Medical Evaluation Criteria
RECALL OF U.S. DIVERS CALYPSO “J” AND CALYPSO IV REGULATORS/REPLACEMENT AND REPAIR OF REGULATORS
Communications with representative of U.S. Divers Co., Santa Anna,California has prompted the following statement:
“We have received a report of a malfunction of acalypso regulator in the field.
testing by our engineering department, we were ableto duplicate the malfunction.
could be possible in the first stage of our number1083 and number 1084 Calypso regulators.
September 13th, U.S. Divers has made the decisionto perform a voluntary recall.
Aqua-Lung distributors and repair stations or U.S. Divers Company.”
John J. CroninU.S. Divers3323 W. Warner AvenueSanta Anna, CA
It is the understanding of the NOAA Diving Office that this malfunctionwill result in loss of air supply to the diver.
Pay attention to all recalls or announcements relating toto defective, potentially defective, or unsafe equipment.
Initiate a means of alerting all NOAA divers of hazardousEquipment or practices.
Present is through the NOAA Diving Office.
The address and telephones of the NOAA Diving Office are:
NOAA Diving Office – NDO6010 Executive BoulevardRockville, MD
Chest X-rays – NOAA Medical Evaluation Criteria (NOAA Form 64-5, Part I)
Review of the medical criteria for chest x-rays by the NOAA DivingMedical Review Board has resulted in the following consensus ofopinion.
mediated through the respiratory system, and lethalconsequences may ensue, a 14 by 17 chest x-ray, PA andlateral, shall be taken as a baseline on the initialphysical examination.
every two years until the diver has reached the age of40, then annually with each physical examination.
x-ray shall be reported as normal and the resultsincluded with the physical examination.”
This change in evaluation policy should be brought to the attentionof the examining physician with respect to the criteria forexaminations.
Recall of Dacor Pacer Regulators and Repair ofRegulators
Communication with representatives of the Dacor Corporation hasprompted the following statement:
Dacor Corporation has announced a voluntaryRecall of all PACER regulators and secondStages shipped from the factory prior toJuly 31, 1979.
Fabrication has been discovered in the topCover of the second state and can cause freeFlow.
A faulty unit, should not dive with theRegulator and should take it to their nearestDacor dealer for free repair.
Design modification, PACER regulators shippedafter August 1, 1979, are not involved in thisrecall.
The following attachments outline in detail to the Dacor dealer thedetails of repair pertaining to the recall of the PACER regulators, andinstructions for cover assembly.
It is the feeling of the NOAA Diving Office that the preceding repairdirections be carried out by an authorized Dacor Dealer or anauthorized repair facility.
New Address and Phone Number for NOAA Diving Office:
Chest X-rays – NOAA Medical Evaluation Criteria (NOAAForm 64-5, Part I)
Review of the medical criteria for chest x-rays by the NOAADiving Medical Review Board has resulted in the followingconsensus of opinion.
mediated through the respiratory system, and lethalconsequences may ensue, a 14 x 17 chest x-ray, PA andlateral, shall be taken as a baseline on the initialphysical examination.
repeated every two years until the diver has reachedthe age of 40, then annually with each physicalexamination.
and the results included with the physicalexamination.”
This change in evaluation policy should be brought to theattention of the examining physician with respect to thecriteria for examinations.
EKG – NOAA Medical Evaluation Criteria (NOAA Form 64-5, Part 1)
A baseline normal resting 12 lead electrocardiogram
shall be performed on the initial examination.
electrocardiogram shall be repeated annually after the ageof 35.
This change in evaluation policy should be brought to theattention of the examining physician with respect to thecriteria for examinations.
Harness/Straps and InflationDevices on Dry Suits
Dry Suit Neck Seals, Suit Flooding,and Buoyancy Loss
Use of Adapters, “T’s”, or Other Multiple-OutletSwivels, etc., In Intermediate Pressure Portions ofUnderwater Breathing Apparatus. Caution must be used when adding adapters, “T’s”, orother multiple-outlet swivels to the intermediatepressure portion of UBA which supplies breathing gasto the divers; such as adapters can reduce the gasavailable during diver inhalation.
gas flow may not be apparent at the surface, but canbecome significant at depth.
Office test indicate that the reduction in gas flowis caused by small diameter of the orifice inadapters which are used to mate UBA components ofU.S. and European manufacture, and adapters to addsuit-inflation hoses to the intermediate pressurehoses of UBA.
All diving apparatus which includes the componentsmentioned above should be examined to insure that theinside diameters of adapters and T’s through whichbreathing gas flows are at least as large as theoriginal diameters of the standard fittings on theapparatus.
Metric adapters intended for the use of Unisuitinflator hoses on U.S. regulators must not be used toadapt AGA intermediate pressure hoses to U.S. regulators.
Teflon washer (instead of the recessed “O” ring,which cannot be used due to orientation of sealingsurface) may provide a seal, but flow is drasticallyreduced and blowout may occur.
First Stage Regulator “Freeze-Up”During recent NOAA Diving Office tests at 42 degreesF, a “freeze-up” occurred with an AGA Divator UBA. This incident occurred immediately after the diverdisconnected the surface supplied air and began usingair from a self-contained high pressure source.
believe that this problem was caused by a smallquantity of fresh water which entered from the UBAfirst stage from the umbilical and froze up due tothe cooling which accompanied the expansion of thehigh pressure air.
inside UBA an occur at relatively high temperatures. Great care should be exercised to prevent water fromentering the gas supply side of UBA.
Harness/Straps and Inflation Devices on Dry SuitsNOAA Diving Safety Bulletin #79-1 stated that “wherepower inflation and exhaust valves/controls for thesesuits (dry) are located upon the chest, the use of anadditional front-mounted buoyancy compensator is anunsafe practice.”
Part of the rationale for this statement was based onthe accidental, uncontrolled inflation of a dry suitcaused by the inability of a diver to remove his handfrom between the B.C. and inflation valve followingthe addition of air to the suit.
During recent NOAA Diving Office tests, andunintentional/uncontrolled inflation of a Viking Suitwas caused by a diver harness crossing over theinflation valve.
Diving harnesses and other straps must be positionedsuch that unintentional inflation of deflation of drysuits is not possible.
Teflon Washers in Hose AdaptersTeflon washers are commonly found in adapters whichconvert metric (European) to U.S. manufactured partsin UBA and suit inflators.
fittings can result in excessive flattening of theteflon washers and reduction in the effectivediameter of the gas flow path to the point ofsignificant breathing resistance or slow suitinflation.
the surface but can be significant at depth or duringstrenuous activity.
DrySuit Neck Seals, Suit Flooding, and Buoyancy LossNOAA Diving Safety Bulletin #79-1 contained arevision in the Safety Rule #14c of the DivingRegulations related to the use of buoyancycompensators with dry suits.
was included, “Variable-volume suits (such asUnisuits and Viking suits) provide a diver withadequate flotation and a means of fine buoyancycontrol.”
This statement requires some qualification.
seals (dams) are defective, installed in such afashion that gas can easily pass into the hood, toolarge, or absent, gas can be easily lost from thehood, resulting in significant loss of buoyancy.
Safety Bulletin #79-1 also states, “The Safety Boardhas determined that, where power inflation andexhaust valves/controls for these suits are locatedupon the chest, the use of an additional front-mounted buoyancy compensator is an unsafe practice.”
Both of the above statements remain correct.
must be emphasized is that any neck seals (dams)which readily allow gas to move from the suit intothe hood constitutes a safety hazard, because thesuit will not provide the SCUBA diver with adequateflotation.
This means that if a good neck seal can be reasonablyassured, no additional buoyancy compensation deviceis required.
reasonably assured, an additional buoyancycompensating device must be used but the BC must NOT
interfere with access to nor operation of the gasvalves on the suit.
Great care must be exercised during training programswhere, rather than custom fitted suits, inexperienceddivers share suits.
Product Recall – Royal Aqua Lung(Model #1014) & Royal Octopus(Model #1091)
U.S.D. CORP. (formerly U.S. Divers Co.), Santa Ana, CA.,announced the voluntary recall of all Royal Aqua-Lung(Model #1014) and Royal Octopus (Model #1091) regulators. The Royal regulators have been marketed nation-wide sinceDecember, 1982.
The recalled regulators may have a potential problem whichcould result in a shutdown of air.
plastic clip in the demand lever assembly of the secondstage of the Royal regulators may become dislodged.
plastic clip could then prevent the proper operation of thedemand lever, and this could eliminate the flow of air.
this occurs, use of the regulator could be hazardous.
The model name of the Royal regulators appears on the decallocated on the face of the second stage of the regulator. Only Royal regulators are being recalled.
Consumers are warned not to dive with these regulatorsuntil they have been factory serviced.
return the regulators directly to U.S.D. Corporation byshipping the regulators to:
Recall-Factory Service, 3323 W. Warner Avenue, Santa Ana,CA
U.S.D. Corp will pay for all shipping costs.
should include their name, address, and telephone number,and the name of the dealer from which the regulator waspurchased, when shipping the regulators.
also return the regulator to any authorized Aqua-Lung Pro-Line dealer.
Consumers requiring additional information should contactU.S.D. Corp, Customer Service Department, 3323 W. WarnerAvenue, Santa Ana, CA. 92702, or telephone collect theCustomer Service Department at 714/540-8010.
At the last meeting of the NOAA Diving Safety Board, thesubject of High Pressure Air Systems was discussed indepth.
A number of incidents, poor procedures, and unsafe
situations were brought to the attention of the SafetyBoard.
overfilling of steel and aluminum scuba tanks, and havealso resulted in various parts and fittings of fillingsystems being overpressurized.
These situations are dangerous and could be the cause of aserious or even fatal injury.
To reduce the possibilities of a tank rupturing or a systemfailure, the NOAA Diving Safety Board has designated thefollowing policies for the use of HP Air Systems.
The maximum working pressure for all HP systemswithin the NOAA Diving Program, and to be used byNOAA Divers, is 3200 psi.
If a permanent filling system is capable ofdelivering 2500 psi or higher, then equipmentmust be installed to ensure that steel tankscannot be over filled.
consist of a 3-way valve and a pressure reductionregulator.
marked to indicate the proper position for
a system that is capable of delivering 2500 psior more should contact Richard Rutkowski, FTS350-1223, or commercial (305) 361-4223 forinformation and direction on upgrading theirsystems to ensure compliance with this SafetyBulletin.
All existing HP systems that are capable ofpressures of 2500 psi or more must be inspectedby Richard Rutkowski, or his designee, to ensurethat all fittings, valves, lines, hoses, filters,and storage flasks meet the specifications forthe pressures being used within the system.
Any questions concerning the policies should be directed toRichard Rutkowski.
J. Morgan Wells, N/MO15NOAA Diving Coordinator
Recent reports of hazardous incidents and/or equipment inhazardous condition have been brought to my attention.
reports cover a multitude of equipment problems.
particularly concerned with the reports that involveintermediate regulator hoses and high pressure (H.P.) hoseson submersible pressure gauges.
Supervisor (UDS), Divemaster, and diver is reminded that itis their responsibility, as stated in the NOAA DivingRegulations, to properly maintain their diving equipment. I interpret this to include required annual maintenance,day-to-day upkeep and the replacement of equipment that hasoutlived its useful life.
particularly note their responsibilities to insure that theproper equipment maintenance records are maintained.
The following incidents have recently been reported:
A NOAA Diver’s intermediate hose separated fromthe ferrule, on the first-stage end, during a 20foot working dive.
forced the diver to perform a free ascent.
The intermediate pressure hose of a NOAA diver’sregulator ruptured on deck while he was waiting toenter the water.
The intermediate pressure hose of a NOAA diver’sregulator ruptured when he turned on the aircylinder.
In a non-NOAA incident the HP hose on asubmersible pressure gauge ruptured as the diverturned on the air cylinder.
whipped upward striking the diver across the eye. The resulting injury caused the diver to lose 90%of his vision in one eye.
During an inspection of the equipment brought torecent basic class, three out of ten regulatorswere found to have bulges, cracks, or totalseparation of the braided hose from the connectingferrule.
intermediate hose that were in a deterioratedstate.
be held together with electrical tape and wireties.
The instructors also found fins that were
totally rotted and suits that were improperlyfitted to the point of creating a hazardoussituation.
In order to insure the safety and efficiency of ourDiving Program, each diver should make an extra effortto assure the proper use and maintenance of his/herequipment.
When checking your gear before each dive, inspect thehoses before pressurizing them, and again afterpressurization.
stressed points, the hose should be replacedimmediately.
can occur under your hose protector.
of the incidents that have occurred involved newhoses.
preclude possible defects of damage.
Unit Diving Supervisors must insure that equipmentsent with trainees to diver training programs is inproper working condition and of appropriate size.
Due to the rather high incidence of hose failures inrecent years, the NOAA Diving Program has initiated astudy relating to the “Burst Pressure and Breaking
Strength of Regulator Hoses (H.P. and L.P.).
encouraged to assist in this effort by providing uswith any hoses that must be removed from service.
brief history of the hose (age, nature of failure, orreason for replacement, etc.) would be of benefit.
Cliff NewellUnit Diving SupervisorNortheast Fisheries CenterNOAA-NMFSWoods Hole, Massachusetts
During a recent training class, a submersible pressuregauge (SPG) failed, forcing a student into a buddybreathing ascent.
correctly, but had a screw loose inside the dial.
seemingly innocuous piece of hardware jammed the needle at1600 psi.
breathed his tank empty (without knowing it.
well for the student and that he was able to handle this“real world” emergency, and for his buddy, who was nearbyand prepared to help out as he should have been.
The incident would have been avoided completely if anattentive inspector had removed the equipment from service. All personnel involved in a diving operation must learn tobe aware of what’s going on and not to use questionableequipment.
A student in a recent class arrived equipped with a “new”Poseidon regulator.
instructors revealed that the hose was of a defectivedesign that had been recalled in 1979.
hose was already pulled part way off the fitting.
Fortunately this defective hose was caught before anyproblems developed.
regulator and had no idea that there could be a problem. It is possible that, although the regulator was new, a hosehad been installed from stock that was from the defectiveissue of hoses.
NOAA Diving Safety Bulletin 79-2 and 79-3 addressedregulator and dry-suit inflator hose failures on Poseidonregulators.
Bulletin 79-3 specifically addressed how to
recognize the defective issue hoses.
directed to review these bulletins and inspect any Poseidonhoses that may be received from dive shops.
shops have disposed of any defective hoses, there areobviously a few still out there.
The NDP Diving Equipment Worker, Steve Urick, is preparingSubmersible Pressure Gauge (SPG) Testers to be distributedthroughout the program.
serious diving accidents, it has been determined that theneed exists to require each divemaster to test the SPG’s inhis charge on a regular basis.
with the units and Steve plans to have the testers shippedby the end of March.
The last few years have show a shift to Variable Volume DrySuits as the standard diving suit used by NOAA Diversoutside of tropical waters.
wider assortment of people being trained in the use of drysuits and using them in the field.
addressed by the NDP at this time is providing properlysized dry suits for small divers.
not been found, but the following reminder is important. The variable volume dry suit need to fit the diverreasonably well in order for that diver to perform his/hertask safely.
Safety is the operative word in this warning!
The NOAA Diving Regulations require that both divers anddivemasters ensure that the equipment and operation aresafe.
In other words, don’t dive in a suit that fits so
poorly as to endanger your ability to control that suit!
Unit Diving Supervisors are directed to ensure that eachNOAA diver in their unit is given access to this bulletin. Any information that has an impact upon the safety of NOAAdivers should be brought to the attention of the NOAADiving Coordinator by the fastest means.
NOAA Diving Program N/MO15National Ocean Service, Office of Marine Operations6001 Executive Blvd., Rm 304Rockville, Maryland
Submersible Pressure Gauges (SPGs) are important enough assafety equipment to require that their accuracy be testedon a regular basis.
(NDP) is distributing Submersible Pressure Gauge Testers(PGT) to all units.
All SPGs in use will be tested under the followingcircumstances:
• Annually (at the minimum)• Any time the SPG’s accuracy is suspect
• After and SPG has been repaired• Prior to using a new SPG
• After anSPG has been exposed to unusual shock• Any time there is a diving incident, all SPGs involved
shall be tested and the results included in the UDS’sreport.
SPGs should be tested before major diving operations andbefore units leave for the field season.
All SPGs will be tested at NDP classes, both to ensure safeequipment for the class, and to train the students in theuse of the PGTs.
Defective SPGs must be repaired and retested, or replaced. The NDP requests that any SPGs that are beyond repair besent to this office for study.
Any question concerning the procedure for using PGT’sshould be addressed to Steve Urick, Diving EquipmentSpecialist, NDP (FTS 443-8007).
questions about a PGT’s accuracy and arrangements can bemade for a calibration or trade.
Unit Diving Supervisors are directed to ensure that eachNOAA diver in their unit is given access to this bulletin. Any information that has an impact upon the safety of NOAAdivers should be brought to the attention of the NOAADiving Coordinator by the fastest possible means.
NOAA Diving Program – N/MO15Office of Marine Operations, NOS6001 Executive Blvd., Rm. 304Rockville, Maryland
Chest X-ray – Since pressure related effects aremediated
lethal consequences may ensue, a report of a 14 x17
as a baseline on the initial physical examination.
whenever indicated by medical history or clinicalfindings.
check x-ray before the age of 40 and reduces the post age40
physician or NDMRB whenever indicated by medical history orclinical findings.
A revised physical examination checklist is attached.
could lead to compressor failure or canister explosion.
Visual Cylinder Inspection (VCI) program procedures for HPcylinders.
program in general should be addressed to LT Ed Clark, NDPVCI Program Coordinator, Seattle, Washington, FTS 392-6196.
J. Morgan Wells, N/MO15NOAA Diving Coordinator
Some older model AGA Full Face Mask supply hoses aresubject to failure and should be removed from serviceimmediately.
Models of the SPP-01 hose for the SPM-01 mask sold prior to1983 have a faulty crimp fitting which may rupture afterprolonged use.
EFCOM, INC. will replace these hoses with
The attached drawing illustrates the difference between the“old” and “new” hoses.
This situation was brought to the NOAA Diving Program’sattention by a potentially hazardous hose failure in theNorthwest and Alaska Fisheries Center, Pasco, Washington.
Questions regarding this matter may be addressed to:
Mr. Bruce O’BannonEFCOM, INC. 1336 E. Wilshire Ave. Santa Ana, CA
During a recent Operational Diving Class a student sufferedDecompression Sickness (Type II) during a routine chamberorientation dive.
FSW for a :08 bottom time, and decompressed on the U.S. Navy Standard Air Decompression Table 130’/:15 with a :01decompression stop at 10 feet.
This was the first dive of the day for all divers, and theywere pressurized to 125 FSW in groups of four, only onestudent experienced a decompression problem.
The onset of symptoms was :10 post dive but were notreported to the diving supervisor until 1 hr. post dive. The student reported the he was feeling pain and fatigue inhis right leg and hip.
with exercise but recurred while in the sitting position onthe floor.
The student was examined at the NOAA Diving Facility andfound to have decreased pin-point discrimination in thedorsal aspect of the right thigh and lateral aspect of theright lower leg.
The student was transported to Virginia Mason HospitalHyperbaric Facility, he was treated on a U.S. NavyTreatment Table 6, with extensions at both 60’ and 30’. The student was asymptomatic upon completion of thehyperbaric treatment, examined by a Diving Medical Officerand give post treatment instructions.
The orientation dive was routine procedure, well within thelimits of the decompression table, none of the otherstudents were affected.
Report any an all signs or symptoms to the DivingSupervisor promptly after being under pressure.
N/MO15 – J. Morgan WellsNOAA Diving Coordinator
The following is quoted from SCUBAPRO Engineering Bulletin#181:
“In response to a request from the U.S. Department ofTransportation (D.O.T.), Scubapro has discontinued theuse of all plastic dip tubes (P/N 14-157-106) in allapplications.
that in the event that a charged cylinder is exposedto fire, a plastic dip tube could melt or deform, andpossibly prevent effective release of air through thepressure relief valve (burst disc).
The affected valves are the standard valve, P/N 14-059-000, 14-070-000 and double tank manifold 14-002-000 and 14-003-000.
are not affected as they have always had brass diptubes.
These valves can be identified by the high
pressure stem gauge in the back of the valve.
P/N’s are 14-072-000, 14-151-000, 14-152-000 and 14-071-000.
The new replacement brass dip tubes (P/N 14-157-108)are in stock and available now.
that you replace any plastic dip tubes with new stylebrass tubes during the next service or visualinspection.
All plastic dip tubes on NOAA tank valves should bereplaced as soon as possible.
FAULTY HIGH PRESSURE (H.P.) VALVE SEATThe Navy reports that nylon valve seats (Part no. 2302)installed in the Poseidon Cyklon 300 SCUBA Regulator willfreeflow when pressurized.
(PN 2302 Teflon) has been developed to replace thedefective seat.
All Nylon H.P. seat should be replaced to
ensure safe operation of the regulator.
can verify nylon (colored white) vice Teflon (coloredyellowish brown) H.P. Valve seat.
Viking American Inc. distributors for Poseidon regulatorsis conducting a no cost one-for-one replacement of thenylon seats for the Teflon H.P. seats.
Viking American, Inc. 55 Old South AvenueStratford, CT
N/MO15 – J. Morgan WellsNOAA Diving Coordinator
Instructions for Field Replacement ofV203 Retaining Ring on DUI ExhaustValves
We have been informed by the manufacturer that some of theouter rings, part number B0203, have to be replaced.
of the rings which hold the top of the valve in place weremade from an incorrect plastic material which may absorbwater and change the dimension of the ring.
However, there is no visual difference between the plasticsto make for easy identification.
The attached directions and drawings explains theprocedure, any questions concerning this field change canbe addressed to Lt. Ed Clark, and replacement retainingrings can be obtained from him.
LT Ed ClarkNOAA Diving Program7600 Sand Point Way, NEBIN C15700Seattle, WA
FTS – 392-6196Commercial – (206) 526-6196
N/MO15 – J. Morgan WellsNOAA Diving Coordinator
Recall Bulletin Concerning ScubaproHeat-Sealed Type Stabilizing Jacketsand Front Adjustable Buoyancy Devices
The NOAA Diving Program Office has been notified of apotential problem with the overpressure/dump valve on theHeat-Sealed Type Scubapro Buoyancy Devices.
Scubapro is voluntarily recalling all of its Heat-SealedType Buoyancy Devices manufactured prior to April 28, 1988.
All NOAA divers will suspend the use of this buoyancydevice until the valve has been replaced by Scubapro or anauthorized Scubapro dealer, and the valve has been tested.
The attached information concerning the recall proceduresshould be followed to ensure the proper repair of thisbuoyancy device.
Chet Stanley – Diving Training InstructorNOAA Diving Program HeadquartersWSC-1 Rm. 304, 6001 Exec. Blvd. Rockville, Maryland
NOAA Diving Physical Readiness Testing Program
I strongly recommend that the Physical Readiness Testing (PRT) Program attached as NOAA Diving Safety Bulletin 89-1 be implemented as soon as possible. I am temporarily implementing the percent body fat standard as a secondary body composition standard to be used when the height/weight tables are determined to be inappropriate. This will remain in effect until the full PRT program is implemented. At that time the medical standard for body composition will be the percent body fat as calculated using the worksheet in Safety Bulletin 89-1. I wish to emphasize that the PRT requirements are a minimal standard which should be readily obtainable by all NOAA divers without difficultly. I encourage NOAA divers to strive for a higher than “satisfactory” levels. Cc: All NOAA Divers attachment
NOAA Dving Safety Bulletin 89-1 MEMORANDUM FOR:
NOAA Diving Physical Readiness Testing Program
PURPOSE This safety bulletin revises standards for the physical fitness of NOAA divers. These standards will help the Unit Diving Supervisors (UDSs) ensure that all NOAA Divers are minimally physically fit to dive safely. I expect that this encouragement to maintain a regular exercise program will improve the general health and quality of life for our divers as well. AUTHORITY This bulletin constitutes a change to the NOAA Diving Medical Standards by replacing the Height/Weight Table in the NOAA Diving Medical Evaluation Criteria (NOAA Directive 64-23;NOAA Diving Regulations; Exhibit No. 2a). This policy is implemented upon the recommendation of the NOAA Diving Medical Review Board, with the concurrence of the NOAA Diving Safety Board, under the authority granted them in the NOAA Diving Regulations. BACKGROUND Operational diving requires divers to perform rigorous aerobic and anaerobic exercise. Previous policy did not give the UDS, NOAA Diving Coordinator or an examining physician any yardstick against which to measure an individual’s fitness. Implementation of a Physical Readiness Testing (PRT) program will allow screening of diver candidates prior to investing time and money in diving training, and will allow UDSs to ensure that current NOAA divers are maintaining themselves in good physical condition as required by regulation.
Because of the high solubility of nitrogen in fat and because of the poor vascularity of fatty tissue, it has long been held that obesity increases susceptibility to decompression sickness. Being overfat indicates poor general cardiovascular fitness and ability to perform strenuous work. The medical standard for overfat is a percent body fat of 22% or greater for men and 33% or greater for women. Previous use of the standard height/weight tables have shown that they are at best a tool for general screening. Many body types do not fit into the tables, yet have acceptable body fat levels, while some divers that fit the tables have an excessively high percent body fat. The most accurate method of determining body composition is direct measurement of body density in a weighing tank. However, this method is not available to all NOAA divers, and so a more “portable” method is necessary. The attached measurement method is from U.S. Navy OPNAVINST 6110.1C and is performable with only a tape measure. This method produces results that correlate very closely to those from the weighing tank. This correlation has been validated by experimentation by the NOAA Fleet Medical Officers. The exercise portion of the PRT is also derived from the U.S. Navy’s OPNAVINST 6110.1C, which is the Navy wide PRT program, and the PRT test used by the NOAA Commissioned Corps. These programs are used to ensure basic physical fitness for all ratings and professions throughout the Navy and NOAA Corps. IMPLEMENTATION UDSs will distribute this bulleting to all active NOAA divers upon receipt. All divers not already doing so, should embark upon a regular exercise program to ensure their readiness to participate in the PRT when scheduled.
EXAMINATION REQUIREMENTS INITIAL: The UDSs will ensure that the initial Body Fat Computation Worksheet (attachment 2) is completed prior to the administration of the PRT, and forwarded to NDP with the PRT results. A copy should be retained in the diver’s record a the diving unit. ANNUAL: The Body Fat Computation Worksheet will be completed coincident with the diver’s annual physical examination. The worksheets will be forwarded to NDP Headquarters with a copy retained in the diver’s record at the diving unit. DIVER CANDIDATES: The Body Fat Computation Worksheet will be completed coincident with the divers’ initial diving physical examination. Obese and overfat personnel will not be processed for certification or training.
NOAA COMMISSIONED OFFICERS: Body Composition Measurements conducted to satisfy NOAA Corps regulation will suffice to meet the requirements of this Safety Bulletin if they are performed reasonably coincident with the divers annual physical. The UDS will determine “reasonable coincidence”. PROCEDURE The UDS or his designee shall take body measurements to determine each diver’s body composition. Detailed instructions on the method of calculating percent body fat are included in attachment 1. Divers that are classified as overfat or obese (male: 22% or greater, Female: 33% or greater) will be considered medically unfit for diving. Their authorization to dive for NOAA will be suspended, and they will be placed in “inactive” status, effective immediately. Overfat and obese personnel will not be allowed to take the PRT.
TESTING REQUIREMENT INITIAL: The UDSs shall ensure that all NOAA divers complete, and pass, the PRT within one year of the date of this bulletin. ANNUAL: All NOAA divers will pass the PRT each calendar year, and at any time that the UDS determines that a diver’s physical condition is suspect. DIVER CANDIDATES: Diver Candidates will be required to take and pass the PRT prior to admission to a NOAA Diving class. Documentation of successful completion of the PRT must be forwarded to NDP headquarters prior to the application cutoff date for that class. (NOTE: PRT testing will only be conducted after the candidates have completed their diving physical and been approved for diving by the examining physician). NOAA COMMISSIONED OFFICERS: NOAA Corps Officers may use a PRT test that has been conducted to satisfy NOAA Corps Regulations to meet the requirements of this Safety Bulletin, provided that the calendar year requirement above is met. The UDS may still require that the PRT be performed if the officer’s physical condition becomes suspect. PROCEDURE The PRT will be scheduled by the UDS, guided by the following requirements:
(1) The operational requirements of the units must be accommodated as much as
(2) All participants in the PRT will have a current, “approved for diving” diving
physical examination on file with the diving unit before taking the PRT.
(3) The diver will be screened for percent body fat before participating in the
(4) Any diver medically unfit to participate in the PRT must also be considered
medically unfit to dive. Temporary medical conditions precluding participation should be documented, and the PRT for the individual rescheduled for such a time as the condition has resolved and the individual is ready to return to diving.
(5) Two CPR certified personnel must be present during the PRT. Medical
(6) A qualified lifeguard must be present during the 500 yard swim. (7) Divers must adequately warm up before the PRT, and cool down slowly after
(8) PRT events should be completed on the same day in the following sequence:
sit-reach, sit-ups, push-ups, and 1.5 mile run/walk (or 500 yard swim).
Specific instructions for each exercise are included in attachment 3. The results of the PRT will be reported on the PRT Program Individual Score Sheet (attachment 4).
NOAA Diving Safety Bulletin 89-2
We have recently learned that Dacor Corporation issued a recall notice to
Discussion with Dacor personnel indicates that failure of the second stage
lever causes a stoppage of air flow to the diver.
Dacor report to ensure that you are not using a suspect unit. NOAA DIVING SAFETY BULLETINS NOAA DIVING SAFETY BULLETIN #90-1
Diving incidents involving equipment malfunctions,diving emergencies, questionable decompressionsickness, etc., must be reported immediately viatelephone to the NOAA Diving Coordinator (804/878-4092)or the Deputy Diving Coordinator (206/526-6196 or FTS392-6196).
Divemaster; Report immediately to Unit DivingSupervisor (UDS) and submit written reportwithin 7 days to the UDS.
to Line Office Diving Officer (LODO) andsubmit written report within 10 days to theLODO.
to the NOAA Diving Coordinator and submitwritten report within 30 days to the NOAADiving Coordinator. NOAA DIVING SAFETY BULLETIN #90-2
FIELD TREATMENT OF SUSPECTED DECOMPRESSION SICKNESS
Field treatment of suspected or mild decompressionsickness (oxygen administration only) must be followedby an evaluation by a physician.
Diving is unauthorized until the evaluation has beencompleted and reported.
Diving Supervisor (UDS) and submit writtenreport within 7 days to the UDS.
to Line Office Diving Officer (LODO) andsubmit written report within 10 days to LODO.
immediately to the NOAA Diving Coordinatorand submit written report within 30 days tothe NOAA Diving Coordinator. NOAA DIVING SAFETY BULLETIN #90-3
Trendelenburg position is no longer recommended fortreatment/management of diving accidents.
Physicians affiliated with NOAA Diving Program andother major medical institutions have stated that theTrendelenburg position (head down, body elevated) is ofquestionable benefit or necessity.
Emergency treatment of patients with arterial gasembolism (AGE) includes:
Maintenance of airway, breathing andcirculation.
Placement of the patient flat with left orright side down in order to minimize thepossibility of aspiration in the event ofregurgitation.
Rapid evacuation to recompression chamberfacility.
These measures form the basis for the emergencytreatment of AGE.
a patient with impaired consciousness if the first twomeasures have been instituted.
be left in the head-down position for longer thantwenty (20) minutes.
head-down position should not interfere with rapidevacuation.
Head-down position is of questionable therapeuticbenefit in the emergency treatment of decompressionsickness.
If the patient is awake and alert, or if the
symptoms are delayed more than ten minutes aftersurfacing from the dive, or if there is any difficultyin maintaining a clear airway (i.e., the patient is notbreathing or breathing poorly), then the head-downposition should not be used. NOAA DIVING SAFETY BULLETIN #90-4
The U.S. Navy Experimental Dive Unit (EDU) has issued an advisoryabout
The potential exist for like failures on all Conshelf
series and Royal SL/PRO-Diver series SCUBA regulators.
as a creeping of the intermediate pressure
The failed part is identified as USD part
#1053-20- high pressure seat, (see diagram).
Faulty seats can be identified as follows:
1. Product date on packaging has a batch date prior to Aug
(example; April 13, 1990 would be 093140).
black seating material on face of seat.
Known good seats can be identified as follows:
material on face of seat, two etched check marks on backof seat, and/or date etched on back of seat.
Any Divers using USD Conshelf series, SE-2 series or Royal SL/ProDiver series regulators are to curtail their use until the faultypart
For any additional information call the NOAA Diving Center at 206526-6196 or FTS 392-6196. NOAA DIVING SAFETY BULLETIN #90-5
Scubapro has issued an advisory on Air II regulator/inflatorsystem failures.
The failure occurs in the auto inflator and
causes the vest to inflate without warning.
The defective part is a sealing seat on the auto inflatormechanism (part #21-626-004 see diagram).
identified by an orange rubber material on the seat.
Any divers using Air II systems are to curtail their use untilthe faulty part can be replaced.
but will not issue a recall on Air II systems.
will replace the part on request for no charge.
For any additional information call the NOAA Diving Center at 206526-6196 or FTS 392-6196. NOAA DIVING SAFETY BULLETIN #90-6
U.S. Divers has voluntarily decided to extend the field recall involving suspect high pressure seats (part number 1053-20) to include all seats in use in U.S. Divers regulators manufactured or serviced between July 1, 1988 and August 15, 1989.
seats also have the potential of delaminating under pressure andproducing a free flow that may make it difficult or impossiblefor the diver to breathe off the second stage.
covers regulators manufactured from July 1, 1988 to August 25, 1990, or serviced from July 1, 1988 to the present.
The criteria for identifying suspect seats has been changed.
seats with a single check mark or without any marks on the stemside must be replaced.
marked with double check marks or engraved five digit date codeson the stem side.
Regulators that have been inspected since the initiation of the recall on October 5, 1990 may still contain high pressure seats without any marks on the stem side.
considered suspect and must be replaced.
Use of U.S. Divers' Conshelf series, SE-2 series, or Royal Sl/ProDiver series regulators must be discontinued until inspectionand/or necessary repairs are completed by a U.S. Divers Pro Linerepair facility.
For any additional information call the NOAA Diving Center at 206526-6196 or FTS 392-6196
NOAA DIVING SAFETY BULLETIN #91-01
Bauer Compressed Air Moisture Separator; Model#061080-410 Safety Recall
Bauer Compressor Inc. has announced a potential problem withFinal Separator Housing, Model 061080-410, and a voluntary recallfor exchange of the unit.
Subject separator housing can be identified by a data plateattached to it.
Housing my be mounted on a compressor or wall
Contact Lisa Mears, Bauer Compressor, 1326 Azelea Garden Road,Norfolk, VA
(804) 855-6006 for further information or to
NOAA DIVING SAFETY BULLETIN #91-02
Correction to NOAA Diving Program Regulations;Administrative Order 209-123, issued April 12, 1991
Based on the recommendations of the NOAA Diving Medical ReviewBoard (NDMRB), NOAA A.O. 209-123, Exhibit 2 shall be revised asfollows:
46. Chest X-Ray - Since pressure related effects are mediated
through the respiratory system, and lethal consequences mayensue, a report of a 14 x 17 inch chest x-ray, PA andlateral, shall be taken:
1. As a baseline on the initial physical examination.
2. Every 2 years after the age of 40.
3. Whenever indicated by medical history or clinical
This change, originally issued as NDSB #86-3, eliminated therequirement for a semi-annual chest x-ray before the age of 40and reduced the post age 40 chest x-ray requirement from annualto biennially.
Chest x-rays may still be required by an examining physicianNDMRB whenever indicated by medical history or clinical findings. NOAA DIVING SAFETY BULLETIN #91-03
The following information was released by the Naval SafetyCenter, Norfolk VA, 28 September 1991.
information by the NOAA Diving Center, Seattle WA.
1. There are no drugs or medications considered absolutely safe
Any drug which influences the conscious state
of the diver may also affect the susceptibility to nitrogennarcosis and oxygen toxicity.
complicate the diagnosis or assessment of diving disorders.
2. There are numerous unpredictable effects of medications on the
body due to age, sex, weight, cold, fatigue, anxiety, andpossible sensitivity to them.
A. Drugs that may be taken without undue risk while diving:
(1) Aspirin/tylenol/motrin(2) Pseudoephedrine, e.g. sudafed(3) Antibiotics: appear safe under pressure in most cases.
The underlying condition for which the antibiotic is
taken could preclude diving. e.g. bronchitis orpneumonia.
(4) Birth control pills if the individual knows the risks
B. As a general rule, any prescription or non-prescription
drug other than those on the above list, preclude divingwithout an approval by a Diving Medical Officer. Specifically, drugs that will not be taken while divinginclude:
(1) Antidiarrheal: e.g Lomotil, paregoric, etc. should not
be used because of narcotic content.
euphoria, anxiety and panic at depths as shallow as 50fsw.
used for seasickness and have side effects ofdrowsiness.
They generally should not be used prior to
Especially where nitrogen narcosis may occur.
3. Upon completion of the prescription drug usage, medical
clearance by a Diving Medical Officer is required beforediving status can be resumed.
4. This message has been coordinated with the office of CNO,
NOAA divers can obtain additional information about specificmedications by contacting NDC. NOAA DIVING SAFETY BULLETIN #92-01
Bauer Utilus-G Compressor Moisture Separator
Bauer Compressor, Inc. has identified an equipment hazard due tometal
subject compressors. A review conducted by Bauer of ten year oldcompressors revealed
that the final moisture separators may have
reached the end of their useful life and may be subject to metalfatigue and failure if operated above the prescribed pressure.
Bauer has agreed to replace the part at no cost. Contact Bauer at804-855-6006.
compressor and the moisture separator.
For further information contact the NOAA Diving Center at 206-526-6196 or FTS 392-6196. NOAA DIVING SAFETY BULLETIN #92-02
identified a potential pinhole leaks in their
aluminum scuba cylinders made in the years 1982 and 1983. Repeatedfilling
catastrophic failure of the cylinder. The
leaks in the shoulder/neck area of aluminum cylinders:
pressure and at full service pressure check
bubbles around the cylinder valve, safety disc, and the
shoulder/neck area. Use a solution of liquid dish soap
If a leak is detected around the valve, have the O-ring changed bya certified tank inspector (VCI). If a leak is determined to becoming from the cylinder, bleed the tank down and contact Luxferat 714-684-5110. NOAA DIVING SAFETY BULLETIN #92-03
1074-00). The plastic polymer which forms the
second stage body has exhibited cracking. The problem is believedto be related to thermal stress which becomes apparent after 25-30hours of use with the regulator exposed alternately to warm andcold temperatures. Any units presently using the SE2, Conshelf 21series,
inspected by an authorized technician.
active/authorized NOAA divers. For further information contact theNOAA Diving Center at 206-526-6196. NOAA DIVING SAFETY BULLETIN #92-04
varied from slow to complete seat failure.
occurred on Scubapro's quick release balanced power inflator, partnumber 21-626-000.
these inflators and is not issuing a recall at this time. HoweverScubapro
Although these jackets are not part of SEP, the number of reportedproblems
recommends you use only SEP issue diving gear.
questions regarding this safety bulletin or your dive gear pleasecontact the NOAA Diving Center at 206-526-6196. NOAA DIVING SAFETY BULLETIN #93-01
The following safety notice was recently issued to all Scubaprodealers.
The MK 15 first stage regulator HAS NOT been issued by NOAA DIVING SAFETY BULLETIN #93-02
U.S. Navy Diving Manual, Volume 1, (air diving), 0927-LP-001-9010revision 3, 15 February 1993 includes the following changes.
During air dives always ascend at a rate of
Minor variations in the rate of travel between 20 and
ascent must be corrected in accordance with the procedures inparagraph 7-4.2 of the Diving Manual (attached).
delay of up to one minute in reaching the first decompressionstop can be ignored.
Time increased between repetitive group at
the beginning of the surface interval and new groupdesignation as follows;
a. In repetitive group B change 2:10 to 3:20 and 2:11 to 3:21b. In repetitive group C change 2:45 to 4:49 and 2:50 to 4:50c. In repetitive group E change 3:22 to 3:24, 3:23 to 3:25,
d. In repetitive group J change 8:40 to 8:50 and 8:41 to 8:51
All NOAA divers should modify tables and procedures currentlyin use to reflect the above changes. NOAA DIVING SAFETY BULLETIN #95-01
All Unit Diving Supervisors and NOAA VisualCylinder Inspectors
Cliff NewellChief, NOAA Diving Operations
SURVIVAIR Technical Bulletin #19,February 19, 1991
Attached bulletin was recently received from SURVIVAIR followinginquiry from a NOAA cylinder inspector.
SURVIVAIR recommends removal and replacement of the nylon diptube previously used on SCBA assemblies.
dip tubes can be procured from local vendors, located by calling800/821-7236.
Prior to receiving new tubes, nylon tube should be removedleaving a blank port.
should be installed "press to fit".
For further information regarding this subject contactSteve Urick at 206/526-6223. NOAA DIVING SAFETY BULLETIN #96-01
Cliff NewellDirector, NOAA Diving Program
Recall of Trelleborg Viking Inc. Sport Dry SuitAir Inlet Hose Assemblies
Trelleborg Viking Inc., announced a recall of all Viking Sportdry suit air inlet hose assemblies purchased between 1981 and1988.
The cause of the recall is the possibility that a faulty
brass spring could have been installed in 500 hose assembliessold world-wide.
While there have been no reported failures of
the hose assembly, the manufacturer after recent litigation hasrequested a recall to maximize safety.
The recall involves only the air hose assemblies used on theViking Sport dry suit (and does not involve the Pro or Militaryversions).
The Viking-Pro version is issued by the NOAA SEP.
The Viking Sport style assembly consists of a square block withfemale connector, with T sport style assembly consists of asquare block with female connector, with the inflation hosehaving a male connector.
can be distinguished from the pro valve in the following way:the pro valve is a round valve with a male silver connectorprotruding from the side of the valve.
connects to this connector by a female quick disconnect. Additionally, the pro valve is operated by pushing the top of thevalve, vice pushing the end of the Sport valve.
Take the following action to comply with the recall:
Determine if your command carries any Viking Sport drysuits or sport style valve assemblies.
If Sport style valve assemblies are found, check for acode on the flattened hex nut of the sport inflationhose (the first stage end).
code beginning with an A, B or C is found, then thevalve assembly is subject to the recall.
If valve assemblies are found which are subject to therecall, do not use the dry suit, and call either Mr. John Drewniak, Trelleborg Viking, (800) 344-4458, or theNOAA Diving Center point of contact.
For further information regarding this subject contact the NOAADiving Center at 206/526-6196. NOAA DIVING SAFETY BULLETIN #96-02 MEMORANDUM FOR:
Cliff NewellDirector, NOAA Diving Program
Oceanic Submersible Pressure Gauge: "Air-SpoolFailure
The NOAA Diving Center (NDC)and Oceanic have identified the causeof failure between the high pressure hose and the submersiblepressure gauge. The failure is related to the hose swivel fittingand not the performance of the gauge itself.
manufactured to specifications permit excessive "wobble" betweenthe gauge body and the air-spool connection at the hose end.
Unintended lateral force placed on the console between the hoseconnection and the console body results in the air-spool"snapping" into two pieces at the lower O-ring.
identified by catastrophic failure of the air-spool locatedinside the connection between the HP hose and the gauge body. Failure results in excessive air leaking from around the base ofthe console boot.
The attached diagram (Fig. 1) shows the area of concern andprovides you with the factory specified measurements that can bechecked to determine if the hose crimp is within tolerance.
Remove the gauge from the console boot and check the areasindicated below for proper tolerance.
specification, or if your are unsure, but believe that a"significant" amount of wobble exists to warrant concern, notifyNDC as soon as possible and we will ship a replacementimmediately. NOAA DIVING SAFETY BULLETIN #98-01
MEMORANDUM FOR: All NOAA Divers FROM:
David A. Dinsmore Director, NOAA Diving Program
Effective this date, the frequency requirement for NOAA diving physical examinations is changed from annual to the following intervals based on age: Up to Age thirty five (35) - Once every three (3) years Age thirty five (35) to fifty (50) - Once every two (2) years Age fifty (50) and above - Annualy Physical requirement are unchanged and must be completed on the newest versions of the SF-88, Report of Medical Examination and SF-93, Report of Medical History. Upon receipt of the completed medical documents/results from examining physicians, divers are responsible for distribution of these forms to the NOAA Diving Center through the Unit Diving Supervisors. Original forms shall be retained by individuals for personal records or to provide additional copies. If you have any questions regarding this change, contact LCDR Frank Wood at (206) 526-6196. NOAA DIVING SAFETY BULLETIN #99-01 MEMORANDUM FOR:
David A. Dinsmore Director, NOAA Diving Program
New policy concerning inspection and replacement of Luxfer scuba cylinders
Effective immediately, Luxfer requires that every Luxfer scuba cylinder 15 years old or
older be visually inspected annually by a properly trained inspector, as well as inspected with Visual Plus or equivalent non-destructive testing equipment. If the cylinder passes the inspection, it will be certified for use by the inspector. Cylinders that are not inspected and not certified should not be used. Cylinders that fail the inspection should be removed from service.
This Luxfer-required inspection is in addition to periodic hydrostatic retesting mandated
by the U.S. Department of Transportation (every five years.) NOAA requires that cylinders be visually inspected at least once each year by a properly trained inspector. For cylinders in heavy use (for example, those being filled several times a day), Luxfer recommends visual inspection every four months.
If a properly inspected scuba cylinder is found to have either a manufacturing defect or
sustained-load cracking, Luxfer will honor the following replacement policy: C
If the cylinder is 10 years old or less (based on the original hydrotest date), Luxfer will replace the cylinder at no charge. Luxfer will not replace cylinders that have been damaged in normal use or due to abuse or mistreatment.
If the cylinder is more than 10 years old, the customer may purchase an equivalent replacement cylinder for US$50 for cylinders manufactured in the United States. For Luxfer aluminum cylinders manufactures elsewhere, the purchase price will be determined in the country of origin based on local currency rates.
A Amanufacturing [email protected] is any imperfection that fails to meet product specifications at
The new policy applies only to Luxfer scuba cylinders, not to Luxfer cylinders used in
Although Luxfer helped develop Visual Plus inspection technology, they are not affiliated
with Visual Plus and do not derive profits from the sale of Visual Plus units.
For more information about the new scuba policy or Luxfer scuba products, please
contact Luxfer Gas Cylinders, 3016 Kansas Avenue, Riverside, Calif. 92507 USA; telephone 909-684-5110, fax 909-781-6598.
NOAA DIVING SAFETY BULLETIN #02-01 MEMORANDUM FOR:
David A. Dinsmore Director, NOAA Diving Program
Effective this date, the following changes to NOAA diving physical requirements have been made: Dive Physical Frequency: Unless otherwise specified: • To age forty-nine (49) -
Physical Examination Changes Initial Examination - All Ages, require the following: Medical History
Periodic Re-examination - All Ages, require the following: Medical History
Age 40 and Older, include with the above examinations:
Annual Medical History Form All divers under the age of sixty (60) must complete and submit NOAA form 56-59, NOAA Diving - Annual Medical History Report, to the NOAA Diving Center by March 1st of each year. This form must be signed by the diver, but does not require a physicians signature. Failure to submit this form prior to March 1st may result in suspension of NOAA diving certification. Dive Physical Forms All diving physicals must include: NOAA form 56-57, NOAA Diving Program - Medical Evaluation Checklist Medical History form Medical Examination form Body Composition Screening form All Wage Marines and NOAA Corps Officers must continue to use Standard Forms 88 (Report of Medical Examination) and 93 (Report of Medical History). All other NOAA and non-NOAA divers may substitute NOAA forms 56-58 (NOAA Diving Medical History Report) and 56-60 (NOAA Diving Medical Evaluation Report).
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