Term
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Definition
| applies to dive operation or any function in support of that dive function within ontario. |
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Term
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Definition
-NOP (notice of project)
-OP (operation plan)
-Contingency plan
-Ont Diving Regulations
-CSA standards that are referenced in Ont Diving Regs.
-Ont Dive Log
-Dive tables
-Air test sheet |
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Term
| Smallest functional crew. |
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Definition
| 3 - Tender,Diver,Standby Diver |
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Term
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Definition
-Water in takes
-Confined Space
-H20 control structure
-Power tools
-Depth > 100ft
-Contaminated environment |
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Term
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Definition
-a demand regulator
-Tank Quick Release harness
-Bailout
-Mask
-Fins
-SPG
-Flash light (some indicating device) |
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Term
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Definition
-Equipment Check
-All notices are filed
-Log books for himself and others
-OP / contingency plan
-Ensure plans are followed
-Review hazards prior to dive
-Ensure all working devices are prepared and tested
-Inform diver of dangerous water flows.
-Ensure that water flow does not become dangerous
-ensure that each diver participating in the diving operation is competent and fit to perform the work;
-Ensure that adequate warning devices are displayed to indicate dangerous areas.
-Supervise all decompression and Therapeutic recompression, in strict accordance to the dive tables. |
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Term
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Definition
-adequate O2
-Decotables
-proper first aid
-2 way comm to ems
-adequate exit / entry for diver
-exit for unconscious diver
-climate controlled facility |
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Term
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Definition
-Knife
-Weights
-Protective Clothing
-Harness |
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Term
| Requirement for a Dive Harness: |
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Definition
-adequate to remove diver safety from water (2000lbs) -Positive Buckling Device
-D rings to umbilical |
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Term
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Definition
-adequately maintained
-free from knots and splices except for those that connect it to the diver.
-Breaking strength no less than 2450kg
-Attached securely to diver and dive site.
-Adequate length to perform task (+10ft for standby diver) |
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Term
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Definition
-Contaminated environment
-Over 100ft
-Confined Space
-Power Tools
-Mixed Gasses Used (also recorded)
-Recorded past 165ft
-A Diver directs the use of any hoisting device while underwater. |
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Term
| When is a Chamber needed on site: |
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Definition
| -on site if >100ft -no deco limits are given -reasonable protection to diver. |
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Term
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Definition
-must be inspected before 1st use
-Tested every 12months
-when found defective must be rechecked. |
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Term
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Definition
-12hours
-24hours for deco
-Physician recommended. |
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Term
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Definition
-company name listed
-name of superintendent
-location of dive site
-task to be performed
-safety/Contigency sheets
-Mixed gasses if used.
-On Shore or Offshore (do they need to pick you up with a boat)
-Must be written or Orally stated before job, if orally stated a written version must be sent stating who you spoke to and when, within 30 days of the conversation. |
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Term
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Definition
-Must have one
-Plans for evacuation for diver
-topside personnal
-contact with EMS
-Plan for equipment fail
-Plan for loss of comm
-Plan for aborting dives
-Plan for Hazardous weather or ice conditions.
-Plan for offshore dive site unable to maintain station. |
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Term
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Definition
-task to be performed:
-how it will be performed
-identify all hazards
-how notices will be given, and when given. |
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Term
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Definition
| Required to be done every 6 months |
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Term
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Definition
-Visual inspect 1yr
-Hydro 5yr
-Permanently mounted -10yr hydro |
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Term
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Definition
| Diver shall have a second tank for rescue. |
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Term
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Definition
-Provide 25% more PSI than needed.
-Double the volume needed
-Must have purification filters. |
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Term
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Definition
24months
40+ = once a year |
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Term
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Definition
| Required to have up to date first aid and cpr on site. |
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Term
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Definition
not permitted after sunset
not permitted before sunrise
not permitted if unhealthy sea states
not permitted if it has limited maneuverability |
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Term
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Definition
-Must be setup to not cross contaminate between diver to diver.
-eruption from primary should not effect: 2nd mixtures of air, or bailout. |
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Term
| Dive Site equipment (offshore) |
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Definition
-Second motor for boat / second boat
-Dive platform with the ability to maintain stability and position
-2 exits for personnel |
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Term
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Definition
-Used in hazardous diving
-Must not let the object fall more than 10ft
-2nd lift eye must be available with same strength |
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Term
| employer associated with a diving operation” means an employer of: |
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Definition
(a) a diver who participates in the diving operation,
(b) a standby diver who participates in the diving operation,
(c) a diver’s tender who participates in the diving operation,
(d) a diving supervisor for the diving operation, |
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Term
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Definition
- Water Control 1km
- Industrial Plant 2km |
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Term
| The ministry is given written notice when: |
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Definition
-A diver becoming trapped underwater.
-A diver failing to comply with the decompression requirements of this Regulation.
-Failure of any diving equipment posing a risk to the health or safety of a diver.
-Emergency rescue of a diver in a submersible compression chamber or atmospheric diving system.
-Emergency use of a recompression chamber.
-A person becoming unconscious.
-A diver suffering from decompression sickness. |
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Term
| If an incident occurs when should a written notice be given to the ministry? |
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Definition
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Term
| What will be included within an incident report to the ministry? |
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Definition
-The name, mailing address and telephone number of an owner, constructor or employer associated with the diving operation.
-The nature and circumstances of the incident and the injury or illness, if any, sustained by any person as a result of the incident.
-The time and place of the incident.
-The name and address of any person who sustained injury or illness as a result of the incident.
-The steps taken to prevent a recurrence. |
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Term
| Before participating in a diving operation, a diver or standby diver shall ensure that he or she: |
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Definition
-Understands OP/Cont plans.
-Is aware of hazards.
-Has diving log book
-Has a diver medical
-is not impaired
- |
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Term
| breathing mixture supply system must be designed to ensure that: |
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Definition
-One diver's breathing supply will not affect anothers.
-An issue with primary breathing mixtures will not affect: bailouts, reserve systems, or secondary breathing mixture supplies. |
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Term
| Breathing Mixture Supply Lines: |
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Definition
-Adequate
-Internal diameter to permit flow rates and pressures.
-Protected against Site Damage
-Kink Resistant
-Pressure gauge downstream of supply valve.
- Clearly Marked to allow identification |
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Term
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Definition
-Fitted with non-return valve
-Has bail out
-Not used for suit inflation.
-locking device
- |
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Term
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Definition
-Identified to the diver by super
-Locked out / controlled
- |
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Term
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Definition
-No diver in the water.
-Blasting initiator and operating key are kept separate. |
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Term
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Definition
-Be Permanently bound
-Has numbered pages
-Divers Signature and Photo
-Has qualifications |
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Term
| A Scuba lifeline can not be attended when: |
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Definition
-The diver is attached to a buoy being watched by the tender.
-When the diver is escorted by another scuba diver with a lifeline attached. |
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Term
| A Constructor or diving supervisor may vary a procedure in the Oregs. |
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Definition
| Yes, written letter and approval from the Ministry. |
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Term
| Can the tender leave the umbilical for a surface supplied diver? |
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Definition
| Yes, when refueling compressors. |
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Term
| What goes upstream after the divers Pressure Guage? |
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Definition
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Term
| Can a tender give instructions to a crane operator? |
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Definition
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Term
| An emergency gas supply (bailout) worn by the diver must be able to allow the diver to: |
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Definition
-Ascend to surface safely with adequate air.
-Preform all necessary deco stops. |
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Term
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Definition
A) Shell (Fibre Glass)
B) Free Flow Adjustmant Valve
C) Bailout Valve
D) Non Return Valve
E) Side Block
F) Bent Tube Assembly
G) Exhaust Whiskers
H) Purge Button
O) Noseblock
P) Oral Nasal
Q) Air Train (For Free Flow) |
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Term
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Definition
H) Pull Strap Assembly
I) Locking Pins
M) Swing Tongue Catch
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Term
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Definition
L) Locking Horse Show Collar
J) Helmet Liner
K) Chin Strap |
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Term
| Diving Umbilicals,Common components: |
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Definition
-Gas supply hose
-Communication wire
-Pneumofathometer
-Lifeline |
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Term
| Diving Umbilicals,Optional components: |
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Definition
-Hot water supply
-Video cable
-Power cable for lighting etc.
-Just about anything |
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Term
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Definition
-Industry standard – taping
-Twisted assembly
-Whipped and/or tie wrapped
-Sheathed |
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Term
| Maintenance Umbilical Daily: |
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Definition
-Visual inspection
*Hose fitting
*Communication connectors
*Tape and/or whipping
-Rinse with fresh water
-Blow through
-Test communications
-Coil and hang up |
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Term
| Maintenance Umbilical Yearly: |
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Definition
-Internal wash/rinse
-Pressure test
*1½ to 2 times working pressure
-External inspection
*Fitting
*Communication connectors
*carabineer |
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Term
| Presently three types of diving hose available for diving use: |
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Definition
-Gates
-Aqualite
-Barfell Hose |
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Term
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Definition
-Air, Oxygen, HeO2 compatible
-No chemical off gassing
-Kink resistant |
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Term
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Definition
-Black synthetic rubber tube
-Reinforced with 2 fiber braids
-Rubber treated to prevent blisters
-Abrasion & oil resistant cover
*Resists most chemicals and
solvents found in contaminated
water
-Temperature range: - 40°F - 200°F
-Length change @ working pressure 2-4%
-3 diameters available
3/8” 1125 psi max. working pressure
1/2” 1000 psi max. working pressure
3/4” 750 psi max. working pressure
Safety factor 4:1
-Negatively buoyant except ¾” diameter hose
-Standard maximum length 1000’
-No splicing of gas hose |
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Term
| Aqualite Features: By Jacques cable systems. |
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Definition
-Tube and cover extruded in Aquathane, a specially compounded – polyurethane
-Temperature range of -40° - 60° C
-Does not deteriorate with age, remains flexible
-Available in; 1/8”, 1/4”, 3/8” & 1/2” diameters
-Maximum working pressure;
-3/8” – 500 psi
-1/2” – 350 psi
-Safety factor 4:1 – burst pressure 2000 psi
-Best advantage over Gates;
-Buoyant in Salt and Fresh water |
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Term
| Barfell Diving Hose are not to be used: |
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Definition
| NOT TO BE USED IN CLIMATES WHERE TEMPERATURES MAY BE BELOW 0° C (32°F). |
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Term
| Barfell Diving Hose features: |
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Definition
-Cover and tube – extruded PVC
-Polyester filament reinforcementEO
Trailer connectors
Marsh Marine
Direct wire
Banana Plugs
-Internal diameter 10mm
-External diameter 16.8 mm
-Burst pressure is 1524 psi @ 68°F
-Recommend 4:1 Safety factor
-This hose will break in freezing
temperatures. |
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Term
| Pneumofathometer Hose should be: |
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Definition
-Should be of a different colour
-Rated to 250 psi
-Flexible
-Be able to take standard fittings
-Should be of a continuous length, but maybe spliced |
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Term
| Hot Water Hose should be: |
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Definition
-Should be kink resistant
-Heat compatible
-Can be added to or spliced
-½” minimum internal diameter
-Approximately 350 psi water pressure |
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Term
| Thermal protection can be divided into three categories: |
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Definition
1. Operational
2. Emergency
3. Combined operational and emergency |
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Term
| Passive Operational Thermal Protection |
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Definition
A) Wet suits
B) Thermal Underwear
C) Dry Suit |
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Term
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Definition
-Relatively inexpensive
-Relatively lightweight
-Easy to repair
-If punctured still provides thermal protection and buoyancy
-Comfortable to wear
-Easy to swim in
-Little care and maintenance required
-Urination does not cause loss of -efficiency |
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Term
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Definition
-Good fit is essential
-Compresses with depth which reduces thermal protection
-Little thermal protection if there is a wind chill factor
-Loses buoyancy with depth |
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Term
| Thermal Underwear Advantages |
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Definition
-Protection can be varied to suit the conditions
-Rugged and easy to repair
-Inexpensive enough for every diver to own one |
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Term
| Thermal Underwear Disadvantages |
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Definition
-When wet loses most of its thermal protection
-Attention must be paid to maintenance to ensure personal hygiene |
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Term
| Dry Suit Design Variations |
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Definition
1. Standard suit (canvas/rubber) is connected directly to the helmet by a breast plate so air flows from helmet to suit
2. UniSuit is a snug fitting foamed neoprene suit with inflation/ deflation facilities on the suit
3. Conventional Dry suit- loose fitting, strong, thin skin with suit inflation/deflation facilities on the suit
4. Constant Volume suit- automatically maintains a constant volume in the suit regardless of the depth of the diver |
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Term
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Definition
| 1.Thermal protection can be varied to suit the conditions 2. Can be very rugged 3. Can protect the diver in polluted waters 4. Fit is not so critical |
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Term
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Definition
-If punctured, there is a loss of thermal protection, possibly some buoyancy and the dive may need to be aborted
-Blow up may be possible
-Urination leads to discomfort and loss of insulation
-Requires care and maintenance/ repair |
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Term
| Active Thermal Protection Types: |
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Definition
-Hot Water Suit
-Diver Gas Heating
-Electrically Heated Undersuit (EHS)
-Surface Hot Water Heater Unit (SHU) and Bell Gas Heater (BGH) |
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Term
| Hot Water Suit Advantages |
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Definition
-Safe, comfortable, effective
-Diver is able to regulate the amount of thermal protection |
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Term
| Hot Water Suit Disadvantages |
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Definition
-Can be difficult to swim in
-In submersible operations, special consideration should be given to the efficiency of heat conservation
-In some open circuit suits constriction can cause burning |
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Term
| SHU (surface heater unit) and BGH (Bell gas heater) Advantages |
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Definition
-Simple, safe, effective
-Rugged
-Good redundancy of heat/ power supplies can be built in
-Excellent track record |
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Term
| SHU (surface heater unit) and BGH (Bell gas heater) Disadvantages |
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Definition
-If heater fails, dives would have to be terminated
-Training is required to properly maintain the unit
-Divers can be unaware of slow temperature changes |
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Term
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Definition
| firm, slow and steady signal |
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Term
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Definition
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Term
| What do you think influences the type of search technique you would use? |
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Definition
-Weather conditions
-Sea State
-U/W visibility
-Nature of the sea floor
-Currents
-Size & shape of the area to be searched
-Water temperature
-Diving base
-Diving equipment & support facilities
-Nature of the target |
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Term
| List the 6 types of searches |
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Definition
Lifeline Search
Circular Search
Towed Diver Search
Snagline Search
Grid Search
Jackstay Search |
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Term
| The lifeline searches features are: |
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Definition
-Excellent search technique in limited visibility
-Good search coverage
-May be tiring to the diver |
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Term
| List all the jackstay searches. |
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Definition
Circle Search
Grid Search
Snagline |
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Term
| Searches using the light jackstay method, although slow, are the... |
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Definition
most reliable.
With unfavorable sea bed conditions and poor u/w visibility, these searches are the ones that offer the best chance of success. |
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Term
| Circle Search features are: |
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Definition
-Used where the bottom is free of projections
-Flat bottom
-Position of the object is fairly accurately known |
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Term
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Definition
| Most thorough and efficient bottom search |
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Term
| Snagline Search is used when: |
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Definition
| the sea floor is reasonably flat and clear of obstructions and the target protrudes from the sea bed |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Why do we inspect the bent tube assembly? |
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Definition
| It is the main tube that provides air to the regulator. We are looking for dents that will interfere with needed air flow. |
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Term
| Why do we ensure that the flow restrictor is installed? |
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Definition
| The flow restrictor stops air from leaking all pressure to the inflator whip. This ensures that in the case of a catastrophic failure (such as a slice in the line) adequate air and pressure will proceed to the bent tube assembly and to the diver. |
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Term
| What way is the mushroom valve placed in the oral nasal? and why? |
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Definition
| The mushroom is on the inside of the oral nasal. This is so that air leaving the mouth does not go into the helmet but instead exits. It is also positioned so that air from the bleed valve also can leave from the helmet to the oral nasal and be discarded or taken in by the diver. |
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Term
| Pre Dive-Check all Moving Parts: |
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Definition
-Rotate regulator adjustment knob fully in and out (leave centured)
-Rotate free flow valve fully in and out (leave closed)
-Rotate emergency gas supply valve fully in and out (leave closed)
-Check nose block clearing device for free movement |
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Term
| Non Return valve function check: |
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Definition
pressurize through emergency gas supply valve, ensure no gas flow through non return valve occurs.
Another way to check is when your diver does a bailout test. If the pressure gauge were to go up when the diver is on bailout, you know that the one way check valve is not working. |
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Term
| What should not go in the helmet / even be on the table where you are working. |
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Definition
| ANY OIL! Anything aeresol is a nono. |
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Term
| Post Dive-Open all Valves |
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Definition
-Rotate regulator adjustment knob our three turns.
-Rotate free flow valve fully out (leave open)
-Rotate emergency gas supply valve fully out (leave open) |
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Term
| What can be used on a hard to install neck dam? |
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Definition
| Dow Corning 111 / Soap if last resort. |
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Term
| Definition: bail-out system |
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Definition
| means an emergency breathing mixture supply worn by a diver; |
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Term
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Definition
| means the total elapsed time measured in minutes, from the time a descending diver leaves the surface to the time the diver begins final ascent, rounded to the next whole minute; |
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Term
| Definition: breathing mixture |
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Definition
| means a mixture of gases for human respiration and includes pure oxygen; |
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Term
| Definition: decompression |
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Definition
| means the procedure that a diver follows during the ascent from depth in order to minimize the risk of decompression sickness; |
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Term
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Definition
| means diving to depths greater than 165 feet; |
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Term
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Definition
| means a surface location at which diving personnel and equipment are located in support of the underwater work site; |
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Term
|
Definition
(a) an atmospheric diving system operator, and
(b) a worker who performs work underwater at any pressure greater than one atmosphere,
and includes a standby diver who dives in the event of a health or safety emergency; |
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Term
| Definition: diver’s tender |
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Definition
| means a person who assists a diver at the dive site by monitoring the diver’s equipment, communicating with the diver and otherwise monitoring the diver’s health and safety; |
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Term
| Definition: diving operation |
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Definition
| means work performed underwater by divers or work performed on the surface in support of divers, and includes underwater inspection, investigation, excavation, construction, alteration, repair or maintenance of equipment, machinery, structures or ships and the salvage of sunken property; |
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Term
| Definition: hyperbaric chamber |
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Definition
| a pressure vessel and associated equipment designed for pressures greater than one atmosphere; |
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Term
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Definition
| a safety rope used to tether a diver; |
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Term
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Definition
| means a diving operation conducted from a vessel the propeller of which is turning, whether the vessel is stationary or moving; |
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Term
|
Definition
| a breathing mixture other than air; |
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Term
|
Definition
| a cage, basket, platform or other device in or on which a diver may be lowered to or raised from an underwater work site but does not include a submersible compression chamber, an atmospheric diving system or a lock-out submersible; |
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Term
| Definition: standby diver |
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Definition
| a person who stands by at the dive site prepared to rescue a submerged diver should rescue become necessary; |
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Term
| Definition: surface-supplied diving |
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Definition
| diving where the diver is supplied with a breathing mixture through an umbilical bundle, whether or not a submersible compression chamber is used; |
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Term
| Definition: umbilical bundle |
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Definition
| means a composite of hoses, wires and cables designed to supply services, such as breathing mixtures, power, heat and communications, from the surface to a diver or to a submersible compression chamber; |
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Term
| Definition: underwater work site |
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Definition
| the underwater location where work is performed; |
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Term
| Definition: water control structure |
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Definition
| includes dams, head gates, stop logs, turbine intake gates and pump intake gates; |
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Term
|
Definition
Safety Lock
Scizzor locks
Blocks
Blanks or blinds
Locking Cambinets
Pins and clamps |
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Term
|
Definition
- Hardened Steel / key operated / removal by breaking difficult
- 1 key in operation at one time
- safety locks only on energy systems
- Not to be used on personal gear |
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Term
|
Definition
- multiple locks
- Multiple sizes
- 1 Lock from each worker on each energy system.
- white metal cannot be used, easily broken |
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Term
|
Definition
-Gravity based, stops moving gear
-Stored with equip |
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Term
|
Definition
• Electrical—electrical panels, generators, lighting systems, etc.
• Mechanical (the energy of moving parts)—flywheels,blades, fans, conveyor belts, etc.
• Potential (stored energy that can be released during work)—suspended loads, compressed air,electrical capacitors, accumulated bulk goods, coiled springs, chemical reactions, changing states (solid—liquid—gas), etc.
• Hydraulic—presses, rams, cylinders, cranes, forklifts,etc.
• Pneumatic—lines, compression tanks, tools, etc.
• Thermal—steam, hot water, fire, etc.
• Chemical—flammable materials, corrosive substances, vapours, etc. |
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Term
| Electrical Energy Systems: Identify |
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Definition
- control panels
- flexible wires |
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Term
| Electrical Energy Systems: Types of power switches. |
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Definition
| -Handle or Lever - Double Throw Switch (up = normal, down = reversed, middle = stop) - Rotarie Switch |
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Term
| Is the operation control switch a valid location to produce a zero state? |
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Definition
| NO! Machine can still be powered through backup systems or remotely. |
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Term
| Pneumatic Energy System: Identify |
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Definition
-Piped inline
-air filter
-regulator
-lubricator |
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Term
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Definition
| It is a valve that directs air from a source to the various tools. |
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Term
| Lock Outs: Surge tanks are: |
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Definition
| are tanks meant to retain air to activate a machine if the generator is off. |
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Term
| What piece of equipment is found on a pneumatic system but not others? |
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Definition
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Term
| Type of Safety lockout valves: |
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Definition
Piston valve out = on (in = off)
Lever style valve (not always lockable)
Tea Handle (valve out = off) |
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Term
| Pneumatic Tool lock out procedure: |
|
Definition
Trace System
Stop all Equip
Turn off lock out
Block area
Drain all stored air
Look for multiple feed systems
Test System |
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Term
| Hydraulic Energy Systems: Identify |
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Definition
-reservoir
-pump
-electrical motor
- inline filter for oil
- one way check valves
-flow controls, regulates the speed of equip
- pressure reducing system
- hydraulic cylinders (linear movement) |
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Term
| Hydraulic lock out procedure: |
|
Definition
-stop the machine
-lock out the electrical system / pump motor.
-push button on side of hydraulic cylanoid valve to push oil to reservoir
-Test the System |
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Term
| What is special about locking out a gate valve? |
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Definition
| gate valves are not equipped for lock out, you use chain and lock it in place. |
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Term
| Mandatory on the first stage of a bailout bottle for Surface Supply. |
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Definition
| Pressure Release rated for >180psi in ANY LP port |
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Term
| What should be used for lubrication in a helmet? |
|
Definition
| Food Grade Silicone - dow Corning 11 |
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Term
|
Definition
| A face sealing valve. (within 1/2 a turn you are receiving 70% of the flow) |
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Term
| Bailout bottle valve seal is: |
|
Definition
| a stem sealing valve. (not easily turned on to full, less liable when bumped) |
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Term
| When connecting the bent tube assembly, what order do you fasten it? |
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Definition
| Connect the face seal side first prioritizing a smooth tightning. Then proceed to fasten the oring side (which is connecting to the regulator) |
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Term
| The Regulator's Rolar lever should be how sensitive? |
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Definition
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Term
| The mask is free flowing, what is the process of repair? |
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Definition
-Check the dial a breath (regulator adjustment valve)
-Check dmg on the front of the regulator.
-Adjust the nut inside the regulator
-Remove valve and check face seal (flip or replace if necessary) |
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Term
| Oxygen mixtures over __% oxygen compatible greases such as Krytox must be used. |
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Definition
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Term
| What is the minimum recommended umbilical hose diameter to be used with diving helmets? |
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Definition
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Term
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Definition
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Term
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Definition
-Major cause of fatalities
-Often underestimated
-Caused by the difference in depths of two water columns or suction
-Invisible |
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Term
| Dams (four major considerations) |
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Definition
-Depth
-Water temperature
-Visibility
-Flow velocities |
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Term
| Work Related Diving Hazards: Types of Locks |
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Definition
-Lift Locks
-Step Locks
-Flight Locks |
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Term
| Work Related Diving Hazards: Tags and Lock Out Considerations: |
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Definition
-Ensure lock outs are to the satisfaction of the Diver and the --Diving Supervisor
-Ensure any pumps or flow controls are tagged and locked out
-Confirm lock out with site supervisor or owner, constructor representative
-Ensure remote control operation will not effect diving operations |
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Term
| Work Related Diving Hazards: Ship Design and Precautions |
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Definition
-Ensure engines are off and locked out
-Be aware of any loading or unloading
-Be aware of discharge ie: bilge pump, sewage, grey water
-Ensure any intakes, sea chests are off and locked out
-Ensure there is no movement of the ship
-Be aware of any over head lifting
-Chief Engineer should be notified of Diving operations |
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Term
| Water Flow Identification |
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Definition
-Sand Bag Test
-Flow indicators
-Stick & tape
-Valve position indicators |
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Term
| Work Related Diving Hazards: Overhead Craning |
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Definition
-Crane used to lift or lower a diver
-Instructions given by;
-Failsafe equipment
-Brakes
-Not pawl ratchet
-Sec. 20 | O.Reg 629/94 |
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Term
| Work Related Diving Hazards: Trapped Diver |
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Definition
-Determine how diver is trapped
-Standby diver
-Ensure adequate air
-Evaluate possible decompression
-Notify EMS
-O. Reg 629/94 sec.10 (1) 1. |
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Term
| Work Related Diving Hazards: Confined Places |
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Definition
-Voice communications
-Bailout supply
-Adequate method of removing unconscious diver |
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Term
| Work Related Diving Hazards: Enclosed Places |
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Definition
-Pipelines, wrecks, vehicles
-In-water tender
-Voice communications
-Entanglement
-Visibility
-No SCUBA |
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Term
| Work Related Diving Hazards: Ice Diving |
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Definition
-Protective shelter
-Lifelines
-Adequate suit
-Ice strong enough
-Ice stable
-Triangle
-Frazzle or Loose Ice
-Moving Ice |
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Term
| Work Related Diving Hazards: Diving In Currents |
|
Definition
-Drag on umbilical or lifeline
-Swept of job
-Diver fatigue
-Different between surface and bottom
-Hard to locate diver |
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Term
| Work Related Diving Hazards: Heavy Weather |
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Definition
-Electrical Storms
-High Winds
-Heavy Snow
-Heavy Rain
-Icing conditions |
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Term
| Work Related Diving Hazards: Contaminated Diving (example locations) |
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Definition
-Chemical spills
-Nuclear storage
-Sewage treatment
-Rivers and Harbors
-Salvage
-Petroleum spills |
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Term
| Work Related Diving Hazards: Contaminated Diving Equipment and Considerations |
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Definition
-Wrist seals
-Neck seals and helmet attachment
-Suits
-Additional protection
-Monitoring
-Risk/Benefit Analysis
-Specific training
-Stand by diver fully ready
-Stand by diver – equally equipped
-Adequate pre dive checks
-Abort dive if any leaks become evident |
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Term
| Decontamination Procedures |
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Definition
-Hot (exclusion) zone
-Contamination reduction zone
-Support zone |
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Term
| Work Related Diving Hazards: Explosives |
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Definition
-All divers should be out of the water
-Use only electric blasting caps and -prima cord
-Do not attach cap to prima cord until -divers are out |
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Term
| Hazards in placing explosives underwater: |
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Definition
-Stray electricity
-Misfires
-Weather
-Induced current generators, welding machines |
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Term
| Work Related Diving Hazards: Topside Safety |
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Definition
-PFD’s
-PPE
-Rigging & Hoisting
-Fall arrest
-Environmental protection |
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Term
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Definition
Stop
Wait
Call Attention
I Did not understand Last Signal
Made Bottom
I am at the shot line. |
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Term
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Definition
| Lower me or give me slack. |
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Term
|
Definition
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Term
|
Definition
|
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Term
|
Definition
| I've Started or finished work |
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Term
|
Definition
Call Attention
Are you ok?
Stop
I did not understand your last signal
Hold on
Search where you are. |
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Term
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Definition
| You have come up too far, go down until stopped. |
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Term
|
Definition
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Term
|
Definition
|
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Term
|
Definition
|
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Term
|
Definition
| Face the line and go to your right |
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Term
|
Definition
| Face the line and go to your left |
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Term
|
Definition
| Come in on your line or jackstay |
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Term
| Diver to Tender: 2 Pulls, 2 Pulls, 2 Pulls |
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Definition
| I am fouled and need the assistance of another diver |
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Term
| Diver to Tender: 3 Pulls, 3 Pulls, 3 Pulls |
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Definition
| I am fouled but can clear myself |
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Term
| Diver to Tender: A series of pulls, which is not preceded by 1 Pull means; |
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Definition
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Term
|
Definition
| A Firm, slow, and steady signal |
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Term
|
Definition
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Term
| A series of bells should be given; |
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Definition
| in the same manner as ringing a ship's bell. Example: 5 bells would be; jerk jerk pause.... jerk jerk pause.... jerk. |
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Term
| Surface supply umbilical may become fouled in: |
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Definition
-mooring lines
-wreckage
-underwater structures
-shifting of heavy objects underwater. |
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Term
|
Definition
-fatigue
-exposure
-prolonged submergence |
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Term
| Divers who are fouled should: |
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Definition
-Remain calm and control breathing
-Think clearly
-Describe the situation to topside
-Determine the cause of fouling and, if possible, clear themselves
-Be careful to avoid cutting portions of the umbilical assembly when using a knife |
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Term
| If efforts to clear themselves are unsuccessful, divers should call for |
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Definition
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Term
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Definition
| the uncontrolled ascent of a diver from depth |
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Term
|
Definition
-Arterial gas embolism
-Decompression sickness
-Missed decompression stops
-Physical injury ( if diver strikes an object on ascent) |
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Term
| In the unlikely event that gas supply to the panel is lost the operator will: |
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Definition
| switch immediately to the secondary gas supply, notify supervisor and standby for instructions |
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Term
| Never continue a dive with only one: |
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Definition
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Term
| If hard wire comms are lost, the tender shall: |
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Definition
| establish contact using line signals and abort the dive. If tender does not receive immediate pull reply from the diver, greater stain will be given. |
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Term
| Loss of Descent Line: A diver shall |
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Definition
-inform topside and attempt to relocate
-Diver will look up odd bottom to see visual
-If deeper than 40ft, the tender should guide the diver. |
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Term
| if a fall should occur, the tender should: |
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Definition
| take strain on the umbilical to stop the divers descent |
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Term
| When the divers bottom time has expired or the task completed The following procedures should be used: |
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Definition
-Tender will exert slight strain on the umbilical
-Tender will exert a slow steady pull on the umbilical
-Diving supervisor will start timing of the ascent as soon as the diver leaves bottom
-Diving supervisor is responsible for the correct ascent rate
-Panel operator will relay to supervisor the depth – usually every ten feet
-Diver will vent drysuit as needed while ascending to avoid accidental blowup
-When diver arrives to surface, tender and topside personnel will help the diver to the bench and to remove his gear |
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Term
| Kirby Morgan Emergency Procedures: Loss of Comms: |
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Definition
| Revert to line signals and abort the dive when directed by topside |
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Term
| Kirby Morgan Emergency Procedures: Loss of Umbilical Gas Supply: |
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Definition
-Diver switches to bailout and notifies topside.
-Divers checks that umbilical is clear and surfaces slowly.
-If surface supply is restored, diver will close bailout and notify topside. |
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Term
| Kirby Morgan Emergency Procedures: Damaged Gas Supply Umbilical: |
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Definition
-Divers opens bailout
-Notify Topside
-Check that umbilical is clear and abort dive. |
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Term
| Kirby Morgan Emergency Procedures: Demand Regulator Fails: |
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Definition
-Crack open free flow, if no air go to bailout, notify topside
-Backout regulator adjustment knob, if demand resumes, close free flow and bailout, notify topside. |
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Term
| If the diver has to stay on bailout while using free flow, the diver should: |
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Definition
| Open the steady valve during inhalation only. |
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Term
| Kirby Morgan Emergency Procedures: Severe demand regulator free flow: |
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Definition
-Adjust reg adjustment knob until free flow stops
-If free flow continues, adjust the reg in fully, adjust free flow accordingly.
-Notify topside, clear umbilical, about dive. |
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Term
| Kirby Morgan Emergency Procedures: Major Water Leaking Into the Helmet: |
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Definition
-maintain the helmet in a face forward slight down position and use the steady free flow
-The SL-27 has the dewatering valve on the lower left side of the helmet
-Notify topside, clear the umbilical and abort the dive |
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Term
| All surface supply systems must be capable of supplying: |
|
Definition
| two different sources of breathing gas to the diver |
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Term
| Cases where the hazard of the dive is such that the umbilical might become entangled or pinched, a spare __________ and the proper ________ must be available for emergency replacement by the stand by diver |
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Definition
| a spare umbilical and the proper wrenches |
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