Steam pipe welding blisters

Firetube Boilers - National Board of Boiler and Pressure

Look for corrosion, overheating, bulges or blisters, and cracks. Look at the steam/water line area for evidence of corrosion and oxygen pitting on steam boilers. Investigate any appearance of water in the fireside spaces. Check all stays with telltale holes for evidence of leakage through the hole which would indicate a broken stay.

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Steam Piping Best Practices |

Making Sure Steam Piping Is Safe(10 Simple Rules and

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An Explanation of Certified Pipe Welding

that before any pipe welding is performed, the contrac-tor member shall submit to the owner, or his autho-rized representative, a copy of his Welding Procedure Specifications with proof of its qualification. All NCPWB Welding Procedure Specifications (WPSs) have been reviewed by the Hartford Steam Boiler

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