Air compressor

Air compressor safeties 

1. Drain valve
2. Unloader 
3. Bursting disc
4. Fusible plug 
5. Relief valve 
6. L.O low pressure alarm and trip
7. L.O low level alarm (sump)
8. J.C.W high temperature alarm and trip
9. Jacket water no-flow trip 
10. High air temperature trip 
11. Motor overload trip  

{Note: if surveyor asking this question in oral exam, definitely he will ask what are alarms and what are trips separately}