Term
| What is the most important piece of Diving Equipment? |
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Definition
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Term
| What 2 types of breathing system are there? |
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Definition
LP (Low Pressure 150-300 psi)
HP (High Pressure 3000-6000 psi) |
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Term
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Definition
| Supplies air to a volume tank, separator then to the divers - Large Volume |
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Term
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Definition
Supplies air to HP storage bottles (3000-6000psi) which supplies air to divers - Small Volume
It also subs as a pressure relief - volume and pressure. |
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Term
| A Diver's breathing system will never be a combination of HP and LP: True or False |
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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
-Accessible to dive Site personnel
-protected
-identity of diver marked
-downstream guage
-clear view of guages
-Competent operator |
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Term
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Definition
- Compressor does not have to run continously
- Quantity of air available to diver in the event of compressor malfunction
- Air cools in tank releasing moisture. |
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Term
| LP Volume tank valves and gauges |
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Definition
- Check valve immediately upstream
- pressure relief valve set to 25% higher than compressor output pressure.
- pressure guage
- moisture drain |
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Term
| Before carrying out maintenance and repair work on a compressor: ____________________________ |
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Definition
| switch off at the main or disconnect from the mains and ensure unit will not restart. |
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Term
| All reciprocating piston compressors must be: |
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Definition
Lubricated
To Prevent wear between moving parts
Seal close clearances
protect against corrosion
transfer heat
Oils may contaminate diver's air supply. |
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Term
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Definition
Oil sight windows
Oil fill to just below oil check threads |
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Term
| Operation maintenance and testing for compressors: |
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Definition
-Inspect Daily
-Cleaned regularly to stop overhearing
-OIL changed every 200 hours of operation
-Ensure intake is upwind and away from any engine exhausts
-Ensure belts are guarded
-Open water drains as often as the system dictates -HP OR LP |
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Term
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Definition
| Sealed Cartridge type - tower design - 6000psi |
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Term
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Definition
| Cartridge inline/flow through - 500psi max |
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Term
| Filters will not remove ________ __________ |
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Definition
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Term
| Start up / Shutdown Procedures |
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Definition
-Zero energy State
-Logbook - hourmeter vrs. Date and Time, Name
-Oil Check
-Moisture drains
-Visual Check -hazards, downstream valves |
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Term
| Compressor Moisture Drains LP |
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Definition
| drain volume tanks at least at the end of every day – could be more often depending on the system |
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Term
| Compressor Moisture Drains HP |
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Definition
| drain moisture bleeds every 10 to 15 minutes – often “autodrains” are used |
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Term
| Operation Maintenance and Testing: Filters |
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Definition
Change cartridge when indicated, at least annually
Conduct air test as per CSA Z275.2 every six months or whenever there is an indication air is contaminated
Check daily for oil discharge with white handkerchief |
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Term
| The most common scuba tank valve. |
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Definition
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Term
| Operation, Maintenance and Testing for High Pressure Bottles - SCUBA/Bailout: |
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Definition
-Visual examination annually
-Hydrostatic test every 5 years
-Protect valve from damage during transport |
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Term
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Definition
| Automatic compressor control, unit may start-up without warning |
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Term
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Definition
| Hearing protectors must be worn |
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Term
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Definition
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Term
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Definition
| Hot Surfaces, do not touch |
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Term
| Air used by divers must be: |
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Definition
| must be safe to breath, and following compression must be filtered before it is sent to the diver. |
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Term
| Carbon Monoxide can be created from: |
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Definition
-engine drive compressors
-repairs and internal compressor problems |
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Term
| Carbon Monoxide is countered with: |
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Definition
-CO monitors and calibration
-catalytic reaction to convert to CO2 |
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Term
| Oxygen fitting does not need... |
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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
-fast opening
-can proportion easily from 0 to 100% |
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Term
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Definition
-slow opening
-often used so that high pressure cannot be opened quickly |
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Term
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Definition
-used when adjusting flow isn't needed.
-if the valve is partially open the gate will damage the valve.
-Are designed for all open or all closed use. |
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Term
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Definition
-easily repaired by replacing the rubber diaphragm
-the rubber diaphragm is not suitable for sharp contents, high pressure, or steam. |
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Term
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Definition
-swing-check valves
-spring and poppet |
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Term
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Definition
-is a non-return valve fitted in a drain, at the hull, that discharges overboard.
-it prevents sea water from backing up into the drain system.
-A storm valve is a type of swing check valve. |
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Term
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Definition
-is a non-return valve fitted in an oil-fuel tank vent.
-is fitted to the ship's side above the water line.
- A ball inside the valve will permit air to flow to and from the tank, but will prevent sea water from entering the vent. |
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Term
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Definition
-Relativly New
-Lightweight
-Takes up less space than a Gate or Globe Valve
-Easy to overhaul
-Quick Acting |
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Term
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Definition
-Fitted to protect equipment, machinery, and piping, from damage due to excessive pressure.
-Sufficient to prevent a pressure increase greater than 10%
-Adjustable based on the amount of spring tension.
-Must be checked and calibrated by a competent person.
-Locked with tie wire, and a tamper proof seal. |
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Term
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Definition
Electric
Pneumatic
Hydraulic
explosive Actuating |
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Term
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Definition
-More powerful
-Faster than handtools |
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Term
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Definition
-Have to be specifically designed and altered for underwater us.
-Danger of Electric Shock
-Not as power as pneumatic or hydraulic
-Very Expensive
-Power Supply |
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Term
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Definition
-Readily Available
-Relatively Inexpensive
-Require no or little modification for underwater use.
-Power source readily available and portable
-Rugged and powerful |
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Term
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Definition
-Require strict maintenance and lubrication
-Exhausted air - uncomfortable - poor visibility
-Noisy
-Heavy and awkward
-Affected by depth, and Temperature |
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Term
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Definition
-extremely powerful
-smaller and lighter than pneumatic
-no bubbles
-Little noise
-self lubricating (little maintenance -last longer.)
-Depth has no effect
-Stalling does not harm
-Portable power supply |
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Term
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Definition
-Very expensive
-Note readily available |
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Term
| Three types of motors used in power tools: |
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Definition
-Reciprocating
-Rotary
-Combination - a combination of reciprocating and rotary. |
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Term
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Definition
| Adjustable Spade Bit - Wood Only |
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Term
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Definition
| Fixed Spade Bit - Wood Only |
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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
Drill Bits for Concrete - Notice that the tip is made of a stronger material.
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Term
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Definition
Hole Saws - Drill bit for wood or metal
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Term
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Definition
Twist Drill Bits - Drill bit for wood or metal
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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
| Nut and Bolt thread Pitch Guages |
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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
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Definition
| Taps - Bottoming, Plug, Taper |
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Definition
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Definition
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Definition
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Definition
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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
| Tubing Bender - Guided bender |
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Term
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Definition
| Tubing Bender - Spring Bender |
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Definition
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Definition
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Definition
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Definition
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Definition
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Definition
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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
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Definition
| Screw Extractors Spiral Fluted |
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Term
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Definition
| Screw Extractors Straight Fluted |
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Definition
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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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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
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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
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Definition
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Term
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Definition
| Chicago To Female Pipe Thread |
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Term
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Definition
| Chicago to Male Pipe Thread |
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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
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Definition
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Term
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Definition
| Oxygen Bull nose and nut to hose Barb |
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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
| Can a tool use a higher PSI than needed? |
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Definition
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Term
| Can a tool be attached to a compressor that produces higher CFPM than needed? |
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Definition
| Yes, just means you can have more tools running as well, or use the tool longer. |
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Term
| Normal working pressure for an air motor? |
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Definition
| 90Psi. It is possible to use between 85-110psi. |
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Term
| Pneumatic Tools if running under 90 psi may: |
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Definition
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Term
| Before disconnecting or connecting any pneumatic tool or line, always: |
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Definition
| Drain the pressure in the line |
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Term
| Always use whip check lines on _/_" ID tool hose and up. |
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Definition
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Term
| Ensure that _______ ____ or ____ are always used in any twist lock couplers. |
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Definition
| locking pins or wires. (Spring check / whip locking wires.) |
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Term
| Pre Dive Procedure: Pneumatic Tools. |
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Definition
1) Clean, inspect fittings and blow out airlines.
2) Visually inspect tool for defects or discrepancies
3) Lubricate tool. Small tools add 1-2 tablespoons of oil, large tools add 1/4 - 1/2 a cup or oil. (into air inlet)
4) Grease (if fittings fited)
5) Hook up air lines.
6) Run tool at low throttle to circulate oil into but not through the tool. |
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Term
| If inline oilers are not fitted tool should be surfaced and lubricated at least every: |
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Definition
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Term
| Post Dive Procedure: Pneumatic Tools. |
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Definition
1) Run tool on surface to blow out water.
2) Rinse tool in fresh water
3) Dry tool-clean off excess oil grease with solvent.
4) Disconnect tool, add lubricant to air inlet.
5)Reconnect tool run at low throttle to circulate oil into tool - grease if fittings provided.
6) Visually inspect. Note repairs, or report defects.
7) Stow Tool in proper storage. |
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Term
| Portable Compressor check. |
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Definition
1) Ensure machines is sitting level (keeps oils and liquids in correct location to be absorbed)
2) Check coolant
3) Check Fuel (gas and Diesel)
4) Check oil (engine and compressor)
5) Check belts
6) Air valves (ensure inline oilers, filled if fitted)
7) Start machine, log start time.
8) Blow lines, inspect, clean fittings, hook up hoses, lock, blow through
9) Lubricate and hookup tools. |
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Term
| The centrifugal pressure release is: |
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Definition
is designed to ensure that the compressor does not start under load. (usually found in LP compressors)
This is most commonly accomplished by flyweights which fall to their resting position when the compressor stops rotating. This presses on a small valve which then opens and vents the air |
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Term
| 3 Types of common compressors: |
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Definition
Reciprocating Compressor System
Double Acting Piston compressor
Sliding Vane Rotary Compressor
Rotary Screw Compressor |
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Term
| Compressor Unloader System is most commonly used in: |
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Definition
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Term
| The unloader systems purpose is to: |
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Definition
| The unloader system takes the majority of the load off of the compressor without stopping the motor. |
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Term
| The unloader system achieves its purpose through the use of: |
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Definition
| pneumatically operated “pilot valve” which operates on the difference in the volume tank pressure to control the unloader pistons to hold open the compressor intake valves during the “unload” cycle. |
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Term
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Definition
| removal of hydrocarbons, oil, some water |
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Term
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Definition
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Term
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Definition
| removal of 99% of all moisture & up to 90% of all CO2, eg. J13X , sodasorb |
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Term
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Definition
| removes odours, hydrocarbons, small particles |
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Term
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Definition
| removes CO by converting it to CO2 |
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Term
| The lowest dew point for air over 2216psig is: |
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Definition
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Term
| Used to separate moisture from air between each stage of a compressor: |
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Definition
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Term
| How do you preserve the life of your filters? |
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Definition
Pressure maintaining valve and one way valve:
Pressure maintaining valve ensures 65% of pressure stays in the line to the filters. |
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Term
| Hp Air filter Cartridge Replacement Formula: |
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Definition
Cu.ft / SCFM / 60 = Hours
Example 22" Tower = 28,000 CU.FT
SCFM = 10
28000/10/60 = 46.66 hours |
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Term
| Inspecting Breathing Air Systems: |
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Definition
-Record Keeping
-Set - UP
-LP Primary Compressor Sizing
-HP Primary Quantities-
-Air Filtration, Monitoring and Testing
-SCUBA and HP Cylinders
-Air Distribution |
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Term
| if bottled air, _._ times what is required for the operation |
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Definition
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Term
|Explosive Actuating|
Always handle the tool as if it were: |
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Definition
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Term
|Explosive Actuating|
Always wear: |
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Definition
| Goggles / Ear / Steel Boots / Work Gloves |
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Term
| Do you store the Tool and the ammo together? |
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Definition
| No they have to be in separate casing. |
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Term
| Can different power levels of ammo be stored together? |
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Definition
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Term
| Can you pass a loaded tool? |
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Definition
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Term
| Can you carry a loaded tool around the work area? |
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Definition
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Term
| What is a test we can use to determine the thickness of the material? |
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Definition
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Term
| Always start with the _______ lv power cartridge. |
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Definition
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Term
| ever attempt to drive fastners into very ____ or _______ materials. |
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Definition
| hard or brittle materials |
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Term
| never make fastenings in _______ or _______ areas |
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Definition
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Term
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Definition
Gray = 1
Brown = 2
Green = 3
Yellow = 4 |
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Term
| The max a fastener can embed into concrete is: |
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Definition
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Term
| Do not drive fastners in steel less the: |
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Definition
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Term
| Do not use in _______ mortar joints. |
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Definition
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Term
| Always hold the tool ______________ to work surface |
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Definition
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Term
| Should the tool fire to fail, ____ on hard surface for __ seconds. _______ the load, throw in _____ |
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Definition
Hold on Hard Suface
30 Seconds
Remove the load
Throw in Water. |
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Term
| Leaving unfired rounds on a table is permissible. |
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Definition
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Term
| Nevery ___ a load out of the chamber: |
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Definition
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Term
| Always insert the _______ first |
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Definition
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Term
| Tool cannot be fired in the _________ position |
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Definition
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Term
| Closest Fastener can be to Concrete Edge/another fastener? Steel Edge / another fastener? |
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Definition
Concrete = 3"
Steel = 1.5" |
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Term
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Definition
National Pipe Tapered
National Pipe Straight |
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Term
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Definition
| Society of Automotive Engineers. |
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Term
| What is the major reason you do not blow compressed air against someones skin? |
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Definition
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Term
| UNC vs UNF Bolts, what is the difference? |
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Definition
| UNF have more threads than UNC bolts |
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