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106 Cards in this Set
- Front
- Back
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What are the normal and maximum working depth for SCUBA? |
130 FSW and 190 FSW respectively (pg 6-25) |
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Explain the air requirements (i.e. requires SCF) for standby and working divers? |
a. Standby: Below 60 FSW, need at least 100 SCF of air b. Working Diver: Below 100 FSW need 100 SCF of air (pg 6-26) |
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How much PSI do single aluminum 100's need to achieve 100 SCF of air? |
To be safe, 3300 PSI (exact is 3127 PSI, FV for AL 100's = .470) |
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Whose permission is required to dive below the SCUBA normal working depth? Max working depth? |
A. Normal working depth: CO or OIC B. Max working depth: CNO (pg 6-25) |
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Are decompression dives authorized in SCUBA? If so, whose permission is needed? |
Yes, need CO or OIC permission (6-25) |
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What are the additional requirements for planned decompression dives below 130 FSW? |
A certified chamber within 30 minutes is required (pg 6-25) |
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What are the minimum manning levels and roles for a dive side with a single diver? Buddy pair? |
A. Single diver: 4 personnel (diver, tender, standby, sup) B. Buddy Pair: 4 personnel (2x divers, standby, and sup) (pg 6-31) |
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Is enclosed space diving authorized in SCUBA |
No (pg 6-27) |
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At what temperature is it considered cold weather diving? what are the requirements for SCUBA? |
A. 37 F and below (pg. 11-1) B. Need a completely redundant SCUBA system OR twin SCUBA bottles with one common manifold and an approved cold-water regulator with an octopus, and a wetsuit or dry suit (11-2.4.2) |
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What is the difference between a K valve and J valve? what is required when using a K valve? |
A. J valve is a "reserve" system; a K valve is not B. A submersible pressure gauge is required when diving with a K valve (pg 7-6) |
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At what cylinder pressure must you terminate a dive with a single tank? Doubles? |
500 PSI and 250 PSI respectively |
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When are tending lines required for SCUBA |
When direct access to the surface is not available (pg 7-12/7-13) |
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What are the three types of tending lines? Describe the characteristics of a good tending line. |
A. Tending lines, Float lines, and buddy/distance lines. B. Neutrally or slightly positively buoyant, strong. Nylon, manila, and Dacron are suitable material. |
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What is the difference between a buddy line and a distance line? When is a buddy/distance line required? |
A. Buddy lines are 6-10' long (pg. 7-13); distance lines are 11-81 feet long (pg. 17-12) B. At night or in poor visibility (pg. 7-13) |
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What should be covered in a predate brief? |
Dive objectives, time and depth limits, assignments, techniques and tools, phases of the dive, route to work site, special signals, conditions, hazards, emergency procedures (pg. 7-24) |
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How often should line pull signals be given when tending a diver? |
Every 2-3 minutes (pg. 7-36) |
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What is required when using externally powered tools in SCUBA? |
Voice communications with the dive supervisor (pg. 7-37) |
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What is your COA for delay >1 minute, deeper than 50 FSW? Shallower then 50 FSW? |
A. Deeper then 50 FSW, round up delay to nearest minute, add to BT and recompute T/S. B. Shallower that 50 FSW, round up delay to nearest minute, add to first decompression stop. |
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What is hypoxia? What are the symptoms ? What is the treatment? |
Oxygen deficiency; symptoms include lack of concentration, lack of muscle control, drowsiness, weakness, agitation, euphoria, loss of consciousness; treat with 100% O2 on the surface. |
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What are the symptoms and treatment for CO poisoning? Why is it so dangerous? Causes? Additional dive supervisor actions? |
A. Tightness across the forehead, headache, nausea, bad taste in mouth, vomiting, confusion, dizziness, loss of consciousness; give 100% O2 on the surface, transport to chamber B. Dangerous because it may be inconspicuous until the diver begins to ascend; rapid onset. C. Caused by jamming close to exhaust, or failure of oil-lubricated compressor. D. Segregated equipment; notify command/group to secure all diving operations until the source of bad air can be determined |
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What are the 4 types of POIS? |
AGE, Mediastinal Emphysema, Subcutaneous Emphysema, and Pneumothorax |
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What are the symptoms for mediastinal emphysema? Treatment? |
A. Mild to moderate pain under the breastbone described as a feeling of tightness or dull ache, may worsen upon inspiration or coughing. Pain may radiate to shoulder or neck. B. Treat with 100% O2 on the surface and transport to chamber for possible shallow recompression. |
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What are the symptoms for subcutaneous emphysema? Treatment? |
A. Crepitation ("rice crispies") around the neck, voice change, difficulty swallowing, feeling of fullness around the neck B. Treat with 100% O2 on the surface, transport to chamber for possible shallow recompression |
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What are the symptoms of Pneumothorax? Treatment? |
A. Sharp unilateral pain in chest, shoulder, or upper back, divers guards one side, rapid and shallow breathing, pale complexion, may get worse with each successive breathing (tension pneumothorax) B. 100% O2 on the surface, near to check for co-existence of AGE, transport to chamber/take direction from DMO. If you decide to press someone, the inside tender has better be able to perform a needle decompression. Mild pneumothorax can be treated with 100% O2 Only. |
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What are the symptoms of type I DCS? Treatment? |
A. Pain (dull ache, may or may not worsen on movement), marbling (cutis marmorata), swelling of the lymph nodes. B. Treat with 100% O2 on the surface, and except for rashes, transport to the chamber (rash alone does not require recompression IAW the dive manual). |
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What are the symptoms of Type II DCS? Treatment? |
A. Neurological symptoms (Numbness, paresthesia (pins and needles), decreased sensation, muscle weakness, paralysis, mental status change, motor skills change), bilateral pain (indicates possible spinal involvement)m chokes (bubbles in the lungs causing pain and breathing difficulty), and staggers (inner ear problems) B. 100% O2, transport to chamber, initial treatment depth 60 feet |
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What are the direct and indirect bubble effects? |
A. Direct: stationary (autochthonous) bubbles can exert direct pressure on a nerve, stretch and tear tissue. circulating bubbles can block a vein or artery, or restrict blood flow in the lungs leading to fluid buildup (pulmonary edema) B. Indirect: the body recognizes the bubble as a foreign object and attacks it causing "leaky" blood vessels (leads to thickened blood) |
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Explain the RNT exception rule |
... |
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What is the treatment for near drowning? |
Assess ABCs (airway, breathing, and circulation), give rescue breaths, 1000% O2, transport to hospital as soon as possible for follow-on care and chest x-ray (pg. 3-19) |
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What are the rules for diving around active known and unknown SONAR in SCUBA? |
A. Unknown: If unhooded start at 1000 yes and approach to diver comfort; if hooded start at 600 yes and approach to diver comfort B. Known: use table 1A-1 in appendix 1A |
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When is a dedicated care boat required? |
Open water, the possibility of replacement, or lack of easy recovery (like from a ship) (PG 6-7.7 |
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What are the parts of a Neurological exam? |
Mental status, coordination, motor, cranial nerves, sensory sweeps, deep tendon reflexes |
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What is the correct way to transport a stricken diver to a chamber? |
A. Supine, breathing 100% O2 if appropriate and available |
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What actions are required when diving on a ship in a nest? |
All adjacent ship's CDO/CO's must be notified, and any systems on adjacent ships that could harm divers (e.g. SONAR or suctions) must be tagged out (6-19) |
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What are the rules for variations in the rate of ascent? descent? |
Ascent: 30 feet/min +/- 10. (range is 20-40 feet/min. If rate is exceeded, stop and let the watches catch up, then continue
Descent: 75 feet/min. No rules for too fast descent, just avoid squeezes |
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What are the wet and dry charging rates for SCUBA cylinders? |
Wet: 400 PSI/min Dry: 200 PSI/min |
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Give at least 10 symptoms for AGE |
Unconsciousness, loss of coordination, loss of motor control, bloody sputum, confusion, weakness, numbness, paralysis, vision abnormalities, death, convulsions, vertigo |
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What is the minimum equipment for a SCUBA dive? |
SCUBA, BC, Octopus (required for standby), depth gauge, pressure gauge (if diving with k valve), mask, fins, knife, watch |
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What is Hypercapnia, what are two causes of it? what are 4 symptoms and what is treatment? |
A. hypercapnia is CO2 poisoning (excess CO2) B. Caused by inadequate rig ventilation for exertion levels; skip breathing C. Unconsciousness, labored breathing, shortness of breath, euphoria, confusion, drowsiness D. Decrease level of exertion; stop skip breathing; switch to alienate breathing source |
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What are 4 causes of vertigo while diving? What is the difference between transient and persistent? |
Causes: temperature change (caloric vertigo) pressure change (alternobaric vertigo), AGE, DCS Type II (staggers), inner ear barotrauma Transient- less then 1 minute Persistent- longer then 1 minute |
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What are 7 types of squeezes" which is the most common? what must be present for a squeeze? |
Outter ear, middle ear (most common), inner ear, mask, suit, sinus, abdominal Need GRAVE |
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What is the ratio of chest compressions to breaths per minute? |
30 compressions / 2 rescue breaths at a rate of 100 compressions per minute |
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What is the latest Diving Safety Advisory and topic? |
Check secure OOC |
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What are the most common sites for DCS Type I pain? |
Joints- Shoulder, elbow, wrist, hands, knee, ankle |
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What is the maximum current for SCUBA operations? what is required for faster current? |
1 Knot. Above 1 knot ORM analysis is required, tending line or witness float at a minimum |
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What are the rules for diving around active sea suctions? |
LOOK UP |
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What are the levels of chambers? how d you know what level of chamber is required? whose approval is required to use a non-navy chamber for levels I&II? How long does approval last? |
I: 5 Minutes (wavetable to 7 by CO. II: 1 Hour III: 6 hours Use dive manual table 6-1 to determine, depends on depth and BT. CNO approval required for Level I and II. Co approval for level II Approval is valid for 12 months |
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What in addition to the minimum equipment must the standby diver have? |
Octopus regulator |
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Who determines whether or not divers (other then standby) are required to have octopus regulators? What does the MU6 diving instruction specify? |
A. CO's discression, based on ORM B. ORM analysis is required when not using; Recommended for P1 and P2, Mando for standby |
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When can you use the standby diver as a working diver? |
Never-??? look up |
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Explain Boyle's Law |
At a constant temperature, pressure and volume are inversely proportional |
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What needs to be done to transport SCUBA cylinders via aircraft? What if the pilot wants no pressure? |
A. As a good safety precaution, cylinders should be bleed to at least 500 PSI but no less then 100 PSI B. If pilot is not okay with 100 PSI, Bleed all the way and do a Visual inspection before using |
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What are the inspection and test requirements for SCUBA cylinders? |
Visual inspection (VIP) annually or when water intrusion is suspected? |
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Next to they hydro date on some SCUBA cylinders there is a plus (+) sign, What does it mean |
Air allowable 10% over service pressure (figure 7-3) |
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What is the over-bottom pressure set at for regulators? |
135 PSI or manufacturer's recommendations (125 for Poseidon regulators) |
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What special precautions should be taken when doing decompression in SCUBA in large swells? |
Set the depth of the stop so the diver's chest will never come above the prescribed depth (7-40) |
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At what altitude / depths do dives need to be corrected? |
Sea level- 300: no correction required 300-1000: correct dives deeper then 145 FSW 1000-10,000: correct all dives >10,000: contact NEDU for guidance |
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What is the "cross correction" technique? |
Using the SLED (Sea Level Equivalent Depth) table convert dives depths at altitude to their sea level equivalent, then chart the dive using the regular air decompression tables |
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What must be tagged out / secured on vessels before diving operations are conducted? |
use the Ship Repair Safety Checklist for diving (figure 6-20) examples are rudder, anchor, planes, sea suctions and SONAR, pitsword, ICCP, fathometer |
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What are the requirements for procuring diver's air from commercials sources? Where can you find these requirements? |
Commercial air must be Grade A Source I or II or as specified by FED SPEC-BB-A-1034B. Requirements can be found in Chapter 4, table 4-2 |
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How do you transport a strike diver in an aircraft? |
If unpressurized, fly less than 1000 feet; otherwise, pressurize to 1 ATA |
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What is cour course of action for asymptomatic omitted decompression |
TYPE |
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What is the scale used for extremity strength? Why is using a scale so important? |
0-5. 5: Normal. 4: mind weakness (able to resist slight force). 3: moderate weakness (able to overcome gravity but not examiner). 4: severe weakness (able to contract muscles but cannot overcome gravity). 1: profound weakness It is important to be able to reassess a patient: |
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What flow of oxygen should be used on a patient in transit to a chamber? |
12-15 liters per minute |
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Sp=kip breathing may lead to what? |
Hypercapnia |
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What is a repeat dive? |
Any dive conducted 10 minutes or more after the previous dive while a diver skill has nitrogen or helium in his system from a pervious dive. 18 hours is the accepted safe standard for complete off-gassing regardless or table and schedule |
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What DCS Type I symptoms are treated as Type II? |
Cutis marmorata (marbling). radicular and girdle pain bilateral pain (possible spinal involvement) |
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What does DORA stand for
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Diver's Operational Readiness Assessment |
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What is a DSS |
Diving Safety Survey conducted by the Naval Safety Center |
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What is a MK 137 |
An audible recall device (ARD) use at least 20' away fro divers. device fires ~6 seconds after initiation |
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How are diving casualties reported |
Submitted through WESS |
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What is a FAR? |
Failure Analysis Report |
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How many dives to EOD Techs need to conduct to stay current? |
4 dives every 6 months (EODMUSIXINST) |
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Who is current command master diver |
MDV Shields is the EODGRUTWO Master Diver |
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What is the route to the two nearest chambers? |
type |
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What is the minimum medical O2 bottle pressure to start a dive? |
1800 per ESU recommendation. Technically Dive Man only requires enough O2 to reach the chamber |
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What is the minimum cylinder pressure for single aluminum 100's to start a dive |
1500 PSI per EODMUSIX INST 3150.1L |
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What are the sampling requirements for diver's air? |
sampled every 6 months (within an interval of 4-8 months after the last sampling), when contamination is suspicion, and after a system overhall |
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What is the current command diving instruction? OPNAV diving instruction |
EODMUSIXINST 3150.1L OPNAVINST 3150.27B |
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Who is the current command diving officer? |
LCDR Shultz |
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What are the advantages and disadvantages of using SCUBA? |
Advantages: Mobility, depth flexibility and control, portability, limited surface support requirements Disadvantages: limited depth and duration, lack of voice comms, limited environmental protection, remoteness from surface assistance, influenced by current, negative psychological and physiological problems |
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What automated program is used for tag-out? |
ESOMS (electronic Shift Operations Management Systems) |
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What portable device is used to sample diver's air? |
The Pam (portable Air Monitor), also known as Diveair |
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What kind of SCUBA cylinders are used for diving at EODMU 6? |
Single Aluminum 100's, working pressure 3300 PSI |
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What is the big navy pub for ORM? Mobile unit? |
OPNAVINST 3500.39C, EODMUSIXINST 3500.3C |
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After initial ascent to altitude, how long should divers wait before diving? why |
A. Use table 9-5 (initial ascent to altitude) to determine your repeat group, then use the air diving charts to determine your RNT. 12 hours is the longest it could take to equilibrate to altitude. B. Divers need to off gas excess nitrogen; ascending to altitude can be thought of as having just performed a "dive at the lower elevation" |
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During the sensory examination on a Neuro, how many circles are performed above and below the joints? |
One above and two below (5A-10) |
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What section in the dive manual explains neurological examination? |
Appendix 5A |
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What depth can a MK20 FFM (AGA) be used to? |
Same depth as any approved first-stage regulator, most are 190FSW (pg 7-4) |
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Green diver surfaces and report red diver is lost. No bubbles are visible from red diver? actions to take? |
Immediately begin your recall plan, and deploy the lost diver hand over hand at the last known location. IF divers fails to surface in reasonable time make notifications: Command, USCG, Port ops, and any local diving assets that could help to search. |
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Can a diver use any face mask that he wants? Does he have to follow the AMU list? is there an issue if there is a casualty and a diver is wearing an unapproved mask? |
The AMU list specifies brand and models for lifesaving equipment, but accessories such as fist, masks, wetsuits, knives, lets are all diver preference
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When diving in a buddy pair, how many watches are required? how about depth gauge and pressure gauges? |
A. If buddies are connected with a buddy line , only 1 watch is required. If not they both need watches B. Requirements for depth gauge is the same as watches C. Pressure gauges are required for both divers if using k-valves |
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Divers working within ___ of an active ICCP (impressed cathodic protection) system must wear what? |
15 feet; full drysuit, unseat, or wetsuit with hood and gloves (6-21) |
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After a diving incident, who is the first persons who should be notified at the command? |
OPS |
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What is considered warm water diving? |
89-99F NEDU (pg 6-17) |
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When performing a needle decompression, where should the needle be inserted? |
over the top of the 3rd rib into the intercostal space |
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What are 9 things that a dive sup is responsible for per EODMUSIXINST 3150.1L |
Diagnose and treat diving illness as appropriate; ensure personnel diving are qualified and current; utilize ORM; ensure all divers in good health are physically qualified; ensure all members of dive team certified on CPR and basic life support.... |
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What is the preferred method for measuring depth at altitude? If using a regulator, sealed depth gauge is any correction required? |
A. a mechanical or electronic gauge that can be re-zeroed at the dive site (pg. 9-49) B. Yes; add 1 FSW to the reading of sealed gauge for every 1000 feet of altitude. |
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Can you use an AED in a hyperbaric chamber? |
No, because of electrical concerns- sparking could ignite O2 |
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How long does a diver need to wait before conducting a repeat dive in warm water conditions? |
12 hours |
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What are the warm water temperature ranges and their dive duration limits? |
88-94 F: bottle duration or diver aerobic endurance 94-97 F: 3 housed based on physiological limits; 97-99 F: 1 hour based on physiological limits |
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What are the categories of the diving equipment AMU list? |
Category I: Life Support Diving Equipment- regs, BCs, SCUBA manifolds and tanks, FFM, compressors... Category II: Non-life Support Diving Equipment- fins, mask, snorkel, weight belt |
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If the local dive shops don't have air for your tanks, where is another good place to look? |
Fire stations, since their air standards are even higher than the FED SPEC BB 1054B (EOD2 Hursky) |
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You are tasked to perform a dive mission off the coast of Yemen. Where do you start in your search for finding chambers near your diving location |
SUPSALV Secure has a chamber locator form. you can also use DAN (Diver's Alert Network is SUPSALV is unhelpful, but the chamber will most likely need to get certified |
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What is the minimum PSI required for double Aluminum 80s to meed the requirements for 100 SCF for diving deeper then 100FES |
1843 PSI, safe answer would be 2000 PSI (use formula from dive manual section 7-4) |
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You are supervising a dive in the wake zone at the end of a pier. Red Diver surfaces with a 20 minute BT and a MD of 15 feet. on the surface he complains of a sharp pain in the chest and it's getting harder to breath with every breath. What is your diagnosis and treatment? |
Tension pneumothorax. 100% O2, neuro, transport to chamber for needle "d" or recompression |
