Plug Failure Check
List
- Was the plug pretested
for flow?
- Is there a skull covering
the plug?
- Is there any leaks
in the gas supply line?
- Is a check valve stuck
in the closed position?
- Is there a bypass
gas valve in the open position?
- Are there any raw
material additions piled on the plug?
- Is there soidified
aluminum in the plug pipe?
- Is the plug covered
with a gunning refractory?
- Is there dirt, oil,
water, etc. in the gas supply line?
If the reason for
the plug failure cannot be found, remove the plug and check for
the following:
- Is there steel/slag
penetration into the plug?
- Was it caused by oxygen lancing?
- Were slag forming additions added directly onto the ladle
bottom?
- Plug should be sectioned to observe for penetration.
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