জ্ঞাত হচ্ছে সসীম, অজ্ঞাত অসীম ;বুদ্ধিবৃত্তিকভাবে আমরা দাড়িয়ে আছি ব্যখ্যার অতীত অবস্থার এক অসীম মহাসমূদ্রের মাঝে এক ক্ষূদ্র দ্বীপের উপর। প্রত্যেক প্রজন্মে আমাদের কাজ হল আরো কিছুটা জমি পূনঃদখল করা।
menu 2
Friday, January 13, 2017
Engine room fire free
2. Drip trays to be oil free
3. No leaks, If leaks rectify ASAP
4. E/R floors to be oil free
5. Bilge and tank tops to be oil free
6. Tank sounding pipes to be shut and self closing arrangement & working properly
7. Air vents to be properly maintained(esp. wire gauge or flame trap)
8. Proper heating temp of fuels to be maintained (no fuel with flash point <60*C to be stored E/R)
9. Chemicals, paints to be stored in designated places. Gas bottle outside E/R
Garbage management to be
followed :
1.
No oily rags to be kept near
hot areas (esp. boiler, incinerator & purifier)
2.
All oil rags collection bin to
have tight lids & all bins emptied into one big bin in w/s before UMS
11.
High press pipes double skin
12. Pipe lines flanges carrying f.o, l.o press is more than 4 bar should be covered by FN tape
13. Hot pipes to be lagged & lagging to be oil free
14. Exhaust trunking to be oil free
15. Seal pot to be filled with water (i.e. the drain of exh manifold)
16. Spark arrestor on funnel to be clean & oil free
17. High press pipe to be properly cleaned and lid piece to be used as a lining for the clamps
18. Boiler & EGB well maintained. All safety trips tried out regularly (pre post purges)
19. Incinerator to be well maintained (esp. furnace walls. if not metal plate gets hot)
20. All M/E safety trips to be tried out as per PMS
21. Maintain engines in good condition (esp. to avoid scav fire, c/case explosion)
22. Fire detection system to be tested regularly and to be in good working condition
23. All fire fighting equipments in good working condition & tested/ inspected regularly (fixed fire fighting,damper,flap)
24. Electrical fires :
12. Pipe lines flanges carrying f.o, l.o press is more than 4 bar should be covered by FN tape
13. Hot pipes to be lagged & lagging to be oil free
14. Exhaust trunking to be oil free
15. Seal pot to be filled with water (i.e. the drain of exh manifold)
16. Spark arrestor on funnel to be clean & oil free
17. High press pipe to be properly cleaned and lid piece to be used as a lining for the clamps
18. Boiler & EGB well maintained. All safety trips tried out regularly (pre post purges)
19. Incinerator to be well maintained (esp. furnace walls. if not metal plate gets hot)
20. All M/E safety trips to be tried out as per PMS
21. Maintain engines in good condition (esp. to avoid scav fire, c/case explosion)
22. Fire detection system to be tested regularly and to be in good working condition
23. All fire fighting equipments in good working condition & tested/ inspected regularly (fixed fire fighting,damper,flap)
24. Electrical fires :
1.
All motor insulation checked
regularly
2.
Fuses to be of correct rating
3.
Loose connection to be avoided
& periodic switch board checks for loose connections
4.
All equipment safety
trips/overload to be tested as per PMS
5.
Checks for overheating signs in
equipment & switch board. Nothing behind switch board
6.
Short circuit protection &
earth lamps to be checked
7.
Arc chutes to be cleaned
regularly
8.
Avoid overloading of plug
points
25.
Hot works :
1.
When carrying out hot work
check list to be filled
2.
Normal hot work area is
identified (esp. workshop)
3.
While hot work, proper fire
rounds to be carried out
4.
Provide portable fire
extinguisher near hot work place
5.
Special care for hot work in
tanks.
CO2 total flooding system
¥
CO2 and SOLAS (Reg 5)
o
Isolated
from engine room & cargo space.
o
1.5
times heavier than air. Smothers the fire.
o
Stored
in cylinder about 55 bars. Expands to about 450 times its volume. (0.56m3/Kg)
o
30%
of gross volume of biggest cargo space
o
40%
of gross volume of machinery space
o
50% of the gas discharged within 1 min
o
85% of the gas discharged within 2 mins
o
Machinery sector valve with alarm
o
Activated from locally or remote station
outside the engine room
o
Safeguard against unauthorized access
¥
Requirements of CO2
bottle
o
Stamped
pressure (52 bar)
o
Bursting
disc (177-193 bar) @ 63OC
o
Recharging
if 5% of content is lost
o
Hydraulically
tested 228 bar
o
If
bottle>10 years, internal & external inspection
o
Stored at < 55 degC
o
Level tested – radioactive level
indication
o
¨ Inspection:
¥
Entry
requirement:
o
Consider as enclosed space
o
Follow the procedure of enclosed space
entry.
o
Risk assessment to be carried out.
o
Testing of atmosphere should be
considered
o
Arrangement of ventilation, adequate
lighting & satisfactory exhaust fan operation
¥
Weekly:
o
Cabinet door & key position
o
General cleanliness & lighting
o
Satisfactory of exhaust fan operation
o
CO2 alarm & stopping function of
ventilation & pumps.
o
E/R flaps working condition.
¥
Monthly:
o
Pull wire
o
Sketches
o
Pullys to be checked for corrosion &
greased
o
Co2 manifold relief valve to be checked
o
Master v/v operating condition to be
checked locally with precaution
o Installation check monthly to
ensure no leakage
¥ For
cable operating system, wires and accessories checked every 3 months
¥
Annually:
o
CO2 line and nozzle to be blow through
with compressed air
o
All control valves to be inspected
¥
Quantity
of CO2 in the cylinder should be checked once every 4 years (25% yearly, or 50%
biennially)-every bottle must be check once every 4 years
¥
Internally
inspected every 5 years
¥
CO2
bottles to be hydraulically tested 20 years after date of installation and
every 5 years thereafter
¨
Limitations:
o
If
> 10 – 12 mins : ineffective
o
Total
evacuation – time wasted if crew injured
o
Heavy
bottles – recharge, maintenance facilities
o
“One
– off” no reserve
o
Leakage
o
Accidental
release
o
No
protection to personnel
o
Little
cooling effect
o
Highly
asphyxiating
o
Static
electricity.
¨
Operation of CO2 flooding system:
¥
Steps to be taken before
operation:
o
Should
be employed if the master is fully convinced that the situation is out of
control
o
All
personnel to be evacuated from the machinery space, head count to carried out.
o
All
remote (quick closing) closing valves to be closed such as HO service to M/E, DO & HO from sett tank
to purifier, DO service to generators.
o
All
openings such as entrances skylight, funnel flaps to be closed.
o
Stop
all ventilation fans from remote position.
o
All
fuel, Lo pumps to be stopped from remote position.
o
Upon
opening the control box, activates the CO2 alarm warning all
personnel that CO2 is going to be released.
¨ Reoccupation in E/R
after releasing CO2 total flooding system
¥
Observation
before re – entry:
o
24 hours by ABS
o
Ensure that the fire in the compartment
is fully extinguished and could be ascertained by:
ü No
steaming water vaporized in boundary cooling.
ü No
blistering of paints along the bulkhead & temperature is < 100OC
(feeling the bulkhead)
ü By
feeling the bulkhead or hearing any hissing sound of fire
ü By
checking the bulkhead temperature by laser thermometer.
¥
Re
– Entry:
o
Upon satisfactory from the observation
company checklist “Re – Entry after CO2 flooding” should be filled up.
o
Two person (min) ready with firemen’s
outfit with SCBA set & life line with pressurized hose.
o
One responsible person should be stand
by at the entrance and establish communication and co-ordination.
o
Radio communication should be provided
if possible.
o
Confirm the permission from master to
entry.
o
Entry to be made from possible lowest
position (if possible use exit door).
o
Enter the E/R side by side and
extinguish small fire if present.
o
Upon confirmation of no fire “re –
occupation procedure to be commenced.
o
Record all the timings.
o
Engine compartment should be well
ventilated before any damage inspection.
Subscribe to:
Posts (Atom)