Answer EKM Question 15
Q15. While operating at Sea during rough weather conditions, fire sparks have been observed coming out from the chimney. On investigation, it has been observed that the fuel contains considerable quantity of water and sludge. As the Second engineer of the vessel.
Explain.
a. Immediate actions taken to rectify the problem.
b. Precautions you take to avoid recurrence of this type of problem.
Answer: Immediate actions taken to rectify the problem:
Main engine &Auxiliary engines
(a) Ensure the sparks are not coming from the boiler and incinerator by identifying the uptake from which the sparks are emanating.
(b) Ensure the engine parameters are satisfactory and no scavenge fire is in progress.
(c) Check turbocharger performance and clean the grits if necessary.
(d) Exhaust temperatures are to be in optimum range.
(e) Reduce the load if the sparks emanating is high.
Fuel tank
(a) The fuel settling and service tanks shall be immediately drained not only for water but also for sludge. Frequent draining shall be exercised.
(b) Maintain temperature on the service (60-80°C) and settling tank (80-90°C).
(c) If excessive water is found, changeover to other tank if available.
(d) Check for any steam coil leak and arrest the leakage.
(e) Find reasons for the water ingress and arrest.
Fuel oil purifier
(a) Fuel oil purifier to be checked for condition, reduce the throughput to improve separation.
(b) Increase separation temperature to recommended value (95-98°C).
(c) Use purifiers in series to improvise the separation quality.
(d) Check for desludging mechanistic and decrease the desludging interval time.
Economizer
(a) Check economizer stack temperature at different levels and ensure the differential temperature is optimum.
(b) Perform a soot blow and see if the situation improve.
Boiler & Incinerator
(a) Boiler and incinerator could be one of the other reason for sparks, especially while running incinerator with oil residues or oily rags.
(b) Boiler under lad quality fuel or high water content will also Produce spark.
B. Precautions you take to avoid recurrence of this type of problem.
(a) Ensure settling and service tanks are drained frequently not only for water, but also for sludge accumulation.
(b) Ensure fuel separators are running at correct temperature and optimum throughput.
(c) Frequent soot blowing of the economizer and water washing is mandatory.
(d) Spark arrester and soot collector to be periodically inspected and the soot is collected and removed. Fuel quality to be maintained to the latest ISO standards.
(e) If purifier is discharging frequently, then the cause to be identified and rectified.
(f) Sludge or lube oil residues should not be transferred to bunker system at any time.
(g) Frequently clean the filters on settling tanks and the fuel skid automatic filters are to be ensured to discharge frequently.
Explain.
a. Immediate actions taken to rectify the problem.
b. Precautions you take to avoid recurrence of this type of problem.
Answer: Immediate actions taken to rectify the problem:
Main engine &Auxiliary engines
(a) Ensure the sparks are not coming from the boiler and incinerator by identifying the uptake from which the sparks are emanating.
(b) Ensure the engine parameters are satisfactory and no scavenge fire is in progress.
(c) Check turbocharger performance and clean the grits if necessary.
(d) Exhaust temperatures are to be in optimum range.
(e) Reduce the load if the sparks emanating is high.
Fuel tank
(a) The fuel settling and service tanks shall be immediately drained not only for water but also for sludge. Frequent draining shall be exercised.
(b) Maintain temperature on the service (60-80°C) and settling tank (80-90°C).
(c) If excessive water is found, changeover to other tank if available.
(d) Check for any steam coil leak and arrest the leakage.
(e) Find reasons for the water ingress and arrest.
Fuel oil purifier
(a) Fuel oil purifier to be checked for condition, reduce the throughput to improve separation.
(b) Increase separation temperature to recommended value (95-98°C).
(c) Use purifiers in series to improvise the separation quality.
(d) Check for desludging mechanistic and decrease the desludging interval time.
Economizer
(a) Check economizer stack temperature at different levels and ensure the differential temperature is optimum.
(b) Perform a soot blow and see if the situation improve.
Boiler & Incinerator
(a) Boiler and incinerator could be one of the other reason for sparks, especially while running incinerator with oil residues or oily rags.
(b) Boiler under lad quality fuel or high water content will also Produce spark.
B. Precautions you take to avoid recurrence of this type of problem.
(a) Ensure settling and service tanks are drained frequently not only for water, but also for sludge accumulation.
(b) Ensure fuel separators are running at correct temperature and optimum throughput.
(c) Frequent soot blowing of the economizer and water washing is mandatory.
(d) Spark arrester and soot collector to be periodically inspected and the soot is collected and removed. Fuel quality to be maintained to the latest ISO standards.
(e) If purifier is discharging frequently, then the cause to be identified and rectified.
(f) Sludge or lube oil residues should not be transferred to bunker system at any time.
(g) Frequently clean the filters on settling tanks and the fuel skid automatic filters are to be ensured to discharge frequently.
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