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Q8. Describe CO2 fixed firefighting system for machinery spaces and cargo spaces of a bulk carrier. Explain safety precautions taken prior to release of CO2 to the engine room. (20)

Q4. What maintenance and checks are carried out on CO2 bottles:

a) Weekly

b) Monthly

c) Yearly

d) 2 Yearly basis and

What schedule is followed for pressure testing of the bottles. (20)

Q8. a) Sketch and describe a total flooding CO2 gas system suitable for the protection of machinery spaces. (8)

b) State, with reasons, which valve should be operated first in the system shown in (a).  (8)

Q9. a) Sketch and describe a total flooding CO₂ gas system suitable for the protection of machinery spaces. (6)

b) State, with reasons, which valve should be operated first in the system shown in (a) (4)

c) State the periodic maintenance required on the system. (6)

Q4. A. During the weighment of CO2 bottles required for total flooding of Engine room, it was observed that few bottles are less than the original capacity. State the reasons for the same and checks / tests to be made prior refilling. (8)

B. State how often the CO2 bottles are required to be weighed and pressure tested. (8)

---Previously Asked As---

2022/APR/07 - 2022/JAN/05

Q5. A.  During the weighment of CO2 bottles required for total flooding of Engine room, it was observed that few bottles are less than the original capacity.  State the reasons for the same and checks / tests to be made prior refilling;

B. With reference to MSC1/Circ.1318/Rev.1, high pressure cylinders (CO2 bottles) are subjected to an internal inspection and hydrostatic test and periodic test. State the stipulated criteria for such hydrostatic test and periodic test interval of high-pressure cylinders (CO2 bottles).

Q7. Explain in detail how you would isolate CO₂ Fixed firefighting system for routine maintenance. Please enumerate the Maintenance schedule and the minimum frequency performed on this system. Describe all tests and inspections you would undertake and how you would return the system to service. (16)
--- PREVIOUSLY ASKED AS ---

Q1. Explain in detail how you would isolate CO₂ Fixed firefighting system for routine maintenance. Please enumerate the Maintenance schedules and their frequency performed on this system. Describe all tests and inspections you would make and how you would return the system to service.