No person shall attempt to remove or do any work on any safety appliance prescribed by these Rules and Regulations while a boiler or pressure vessel is in operation, except as provided in applicable sections of the ASME Code. Should any of these appliances be removed for repair during an outage of a boiler or pressure vessel, they must be reinstalled and in proper working order before the object is again placed in service.
15 Miss. Code. R. 10-76-2.27.1