jlcochran1
Mechanical
- Oct 30, 2003
- 94
A customer is requesting our field division to install a 2” coupling in the top of a drained, but not cleaned, horizontal Methanol storage tank. The customer is proposing to purge the tank with liquid nitrogen. Then an explosion meter would be used to monitor before welding.
Is there a safe procedure to perform the requested work? A quick scan of API publications indicated some publications that may touch on this. Do any of the publications listed below contain information applicable to this request? Are there other procedures that would be more applicable? Or is this type of procedure not recommended?
API RP 2009 Safe Cutting and Hot Work Practices in the Petroleum and Petrochemical Industries
API PUBL 2202 Dismantling and Disposing of Steel From Above Ground Leaded Gasoline Storage Tanks
API PUBL 2207 Preparing Tank Bottoms for Hot Work
Is there a safe procedure to perform the requested work? A quick scan of API publications indicated some publications that may touch on this. Do any of the publications listed below contain information applicable to this request? Are there other procedures that would be more applicable? Or is this type of procedure not recommended?
API RP 2009 Safe Cutting and Hot Work Practices in the Petroleum and Petrochemical Industries
API PUBL 2202 Dismantling and Disposing of Steel From Above Ground Leaded Gasoline Storage Tanks
API PUBL 2207 Preparing Tank Bottoms for Hot Work
