Alarms and Shutdown
Testing Alarms
Manual alarms can be tested during drills and during crew training sessions. Position crew members around the rig to provide feedback as to coverage and volume of the alarms. Whenever possible, test alarms with test gas to ensure proper calibration and sensitivity. You should never claim a false alarm as a function test.
Testing Emergency Shutdown Devices
Emergency shut-down devices (ESD) that will close off the combustion air should be installed on all of the rig’s diesel engines. It is important to understand just how a particular ESD functions BEFORE you attempt to test it. Engine shutdowns or rig savers may damage engine components if they are engaged when the engine is running at speed. Careful plans should be made with the mechanics to develop a test protocol that will ensure the functionality of the devices without damaging the engine. In most cases these devices can be checked with the engine shut down. Manual engine shutdown devices that shut off the fuel to the engines can also be tested while the engine is shut down.
Knowledge Check Choose the best answer for the question.
1-7. How should the inspector verify that emergency alarms are heard in various locations around the rig?
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