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RESIDUAL FUEL OILS
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NATURE
OF HAZARDS
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FLAMMABLE - It may produce light hydrocarbons in the tanks
headspaces such that vapour may be near to or within the flammable range.
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MARINE POLLUTANT- Hazardous to the marine environment.
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TOXIC - The gas generated may be an irritant of the lungs and may
cause asphyxia. Irritating to skin and eyes.
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SCALDING - May be handled hot in excess of 60ºC/140ºF.
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GENERAL
PRECAUTIONS
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STORAGE & HANDLING TEMPERATURES: Conform to nominated temperature. Avoid excessive local heating.
FILLING & VENTING: Ensure that flame
screens/traps are in good condition and that there are no sources in area
surrounding the venting system. When filling/discharging empty or nearly
empty tanks, ensure heating coils are shut down or heating reduced to minimum
(the fuel oil contacting hot, exposed heating coils may lead to a flammable
atmosphere being rapidly generated).
HEADSPACE CLASSIFICATION: All residual fuel oil tank
must be considered as “hazardous” and applicable precautions taken.
HAZARD REDUCTION: Monitor the flammability
of tanks headspaces regularly. If a measured value exceeds 50% of LFL, take action to
reduce the vapour concentration by purging the headspace with inert gas or
low pressure air, as applicable. Gases must be vented to a safe area with no
ignition sources in the vicinity of the outlet. In tankers fitted with Inert
Gas Systems, The tanks headspaces must be maintained in an inert condition.
ULLAGING & SAMPLING: Take all appropriate precautions to avoid the hazards
associated with static electrical charges.
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