SOLAS Flashcards
Number of Fire pumps onboard passenger ship?
Over 4000GT atleast 3
Under 4000GT atleast 2
Number of fire pumps on cargo ship?
1000GT+ at least 2
Under 1000GT at least 2 where one is independently diven
Emergency fire pump capacity?
40% of main fire pumps
OR
not less than 25m3 per hour, two 1/2 inch jets having a horizontal throw of 40ft
Requirements of Emergency fire pump space`?
Compartment not contiguous to a cat. A machinery space, or space containing main fire pumps.
No direct access to machinery space or atleast an a 60 and steel door between, through a watertight door and second means of access to space
EM. fire pump sea suction?
Own sea suction, with a suction head not exceeding 4.5m under all conditions of list and trim.
Must be self priming
Em. Fire pump supply?
If engine driven, full load for 3 hours and reserve fuel for 15 hours stored outside the machinery space.
If electrically, it should be supplied from emergency switchboard and generator.
What is a Class a bulkhead?
Constructed of steel or equivalent material.
Insulated such that an average temperature of the unexposed side will not rise more than 140degree above original temperature. Nor should any one point rise more than 180 degrees, within the times.
60m,30,15,0
Prevent passage of smoke and flame to the end of the 1 hour fire test
Class B bulkhead?
Approved non combustible material. Temperature rise not more than 140 on average or one single point 225.
for 15mins,0mins
Prevent passage of smoke and flame for 30minute fire test
main Steering gear requirements? (Time, degrees)
35-35 capable.
30-35 within 28seconds
How many steering gear cargo ship? or how many power units?
Main and aux.
Or
2 or more power units. Provided while operating ALL power units
Passenger ship steering gear requirements?
1 unit must be able to meet the requirement with other units in standby
What is important for the design of the hydraulic system of steering gear?
No single failure should render the steering gear uncapable of achieving 15 - 15 in 60s
Steering gear Hydraulics requirements?
Seperated system for each pump.
Low level alarm + Low low.
Storage tank capable of filling one system.
steering gear electrical requirements?
Fed from two supplies.
Short circuit protection
Single phase failure alarm.
Over current protection not less than twice full load current
Emergency Bilge size? Pump?
Direct suction should be at least 2/3ds diameter f pump inlet with NRV.
Largest available pump, where the inlet is the same size as the pump used.
S.W circ p/p, ballast, gen. service p/p etc.
