Boiler and Machinery—Coverage for Damage Caused by Leaking Valve?

Q

Our insured, who owns an ice skating rink, has coverage under the comprehensive section of a steam boiler and machinery “all systems go” form. The insured smelled ammonia in the rink area, and, upon investigating, noticed that there was a leak from a valve in the compressor refrigeration unit. The insured tried to repair the leak by tightening the valve, but, in the process, he turned it the wrong way and the valve blew off. A substantial amount of ammonia leaked into the area.