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
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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
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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: |
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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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