80459-641-01, Rev. 09

Welded Anchorage

Equipment installations using welded supports and attachments in lieu of bolted supports and attachments must ensure the weld locations are distributed similarly to the locations of enclosure anchorage clearance holes. Welded supports and attachments must be properly sized to ensure the weldment withstand capacity exceeds the earthquake demand at the equipment installation location. Precautions must be taken to properly vent and shield the equipment enclosure during the field welding process. Paint must be removed from the equipment weld locations before welding, and then replaced after welding is complete to inhibit corrosion.

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