Engine 2014: Motor Plants and Auxiliary Boilers

1. A would be located in the center of the crown sheet and inserted from the fireside
2. B by design, is drilled with a tapered hole so that boiler water pressure holds the fusible metal in the bronze body
3. C is required by Coast Guard Regulations as an excess pressure relieving device
4. D all of the above

Tip: press A-D to answer