Removal of safety appliances

1. A person may not attempt to remove or do any work upon a safety appliance, prescribed by these rules, while a boiler is in operation. If any of these safety appliances are repaired during an outage of a boiler, they must be reinstalled and in proper working order before the object is again placed in service. This provision does not apply to the removal and replacement of a gauge glass. 2. A person may not in any manner load the safety valve or valves to maintain a working pressure in excess of that stated on the certificate of inspection.