Term
| what current should you use for underwater cutting |
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Definition
| DC electrode - straight polarity |
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Term
| All electrical connections (such as joining cable to cable or cable to torch by hammer-on lugs) which will be in the water should be made watertight by carefully taping with electrical tape. Tape should be extended at least _____" up the cable on both sides of the connection. |
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Definition
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Term
| Safety Switch (knife switch) |
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Definition
| double pole single throw switch |
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Term
| Formal Oxygen Cleaning should be done when using oxygen percentages over |
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Definition
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Term
| Informal oxygen cleaning procedures include |
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Definition
- Cleaning and remove debris and lubricants
-Scrub or clean equipment ultrasonically with a strong detergent in hot water (examples of good detergents are Crystal, Simple Green, Navy Oxygen Cleaner and Alconox)
-Rinse with hot water (approx. 10 minutes)
-Rinse with cold water (approx. 10 minutes)
-The equipment should be dried – if it is umbilicals they should be blown through with dry nitrogen, or clean H.P. air (H.P. compressors with hyper-filtration)
-The equipment should then only be used for the application it was intended |
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Term
| Use proper size cable for under water cutting |
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Definition
| - 2/0 or 3/0 and 1/0 at torch (whip lead) |
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Term
| Formal Oxygen Cleaning (over 40%) requires |
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Definition
| requires strict procedures to be followed by trained technicians with all steps being documented in detail. |
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Term
| If you stay below 200 psi (and are using oxygen percentages above 40%) you do not have to ? |
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Definition
| you do not have to formally oxygen clean equipment but informal oxygen cleaning procedures should be followed. |
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Term
| Always crack (open king valve briefly) O2 bottle valve before connecting oxygen regulator. why is this done |
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Definition
| to prevent dirt rust or metal shavings entering the regulator and curating sparks within the regulator |
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