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
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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
| In many cases independant ____ ________ bottles are used as a secondary with a low pressure compressor being the primary source. |
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Definition
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Term
| Compressor safety mandatory gear: |
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Definition
-Eye protection
-Hearing Protection. |
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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
| Compressor safety: Personnel may not wear: |
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Definition
-Hair loose
-Loose clothing or Jewellery, including rings. |
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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
| No ____ __ ___ _________ outside compressor sheds or any other breathing air compressor intakes. |
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Definition
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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
| The DB limit in which you must wear hearing protection. |
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Definition
110db as stated by the CSA
Examples:
Steel mill, auto horn at 1 meter. Turbo-fan aircraft at takeoff power at 200 ft (118 dB). Riveting machine (110 dB); live rock music (108 - 114 dB). |
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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
| The limit at UWS for carbon monoxide ppm is: |
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Definition
3ppm will set off the visual and audible alarms.
200ppm give a slight headache within 1-3 hours. |
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