Activity – SINGAPORE SEAFARERS

icedcappucino replied to the topic COC 5 (Engine) Oral Questions in the forum COC (Engine) past oral questions 6 months ago

Updated with 2024 questions

David and Rui, Oct 2024
1. Bilge system
A) Bilge well high level, started bilge pump but bilge well level is not reducing.
2. MPA’s 8 RO
3. IMO conventions
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Admin replied to the topic Boiler in the forum COC 5 (Engine) Oral Sample Answers 6 months, 1 week ago

Q: Boiler gauge glass – Blow down is carried out if water level rises, but suddenly drops when steam is introduced, where is the water level and what’s the next action taken.

I would consider carrying out blow down both gauge glass + cross check visible water level with the reading from the remote water level transmitter which sends sign…[Read more]
Admin started the topic Boiler in the forum COC 5 (Engine) Oral Sample Answers 6 months, 1 week ago

Q: What to do when boiler is over-pressurised?

If my hot water kettle at home is boiling over, obviously first thing is switch off power (or cut off the gas if I’m boiling using stove). Same principle apply to onboard. Assuming this is an Auxiliary Boiler (not talking about composite boiler getting M/E exhaust gas) overpressurised scenario,…[Read more]
Admin started the topic Non-return valves in the forum COC 5 (Engine) Oral Sample Answers 6 months, 1 week ago

Q: How to visually tell non-return valve from other valves?

Non-return valves has a X on the top of the spindle.

Actual photos of Screw Down Non-Return valve for Bilge Well onboard.
Admin replied to the topic Bilge Water in the forum COC 5 (Engine) Oral Sample Answers 6 months, 1 week ago

Q: Bilge Pump is running, but Bilge Well water level is not reducing. Why?

E/R Bilge System pipe line:
Bilge Well -> Strainer -> Valve -> Bilge Pump suction valve -> Bilge Pump suction strainer -> Bilge Pump -> Bilge Pump discharge valve -> Bilge Primary Tank.

Fluid (air/liquid) generally flow from higher pressure zone to lower pressure zone.…[Read more]
Admin started the topic Bilge Water in the forum COC 5 (Engine) Oral Sample Answers 6 months, 1 week ago
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Admin wrote a new post 7 months, 1 week ago

Sep 2024 updates Passed: #6 offline meet up: Huge thanks to y’all six who took the time to meet up, it was so fun! Forum glow up […]
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Admin started the topic No. 0277 Marine environmental awareness, Environmental challenges in the forum Marine Legislation 8 months ago

Q: Which ONE part of the oil is most toxic to plankton?
A:

Q: Select the TWO options that complete the following statement: Crude oil is a complicated mixture containing…
A: Hydrocarbons, (sulphur and several metals) (plastics and chemicals) (aromatic hydrocarbons and several metals) (sewage and several metals)

Q: When oil enters the sea,…[Read more]
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Admin wrote a new post 8 months, 2 weeks ago

August updates Passed: #4 offline meet up: first half having fun playing pool, second half dinner and chat! Huge thanks to y’all six who came! Discord channel […]
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