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
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Definition
-Delta P
-Loose gear
-Lock outs
-Remote operations
-Surface supplied only |
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Term
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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
| Diving Signals and Lights |
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Definition
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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 |
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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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