Tanker operation :Equipment for Oil Spill Detection and Oil Pollution Mitigation
Oil tankers operations at sea and while at port requires some basic safety procedure to be observed.
Equipment for Oil Spill Detection
a) Fixed Gas Detecting System (Pump Room and Double Hull Spaces adjacent Cargo Tanks)
b) Pump Room Bilge High Level Alarm
c) Cargo Oil Pump, High Temperature Alarm & Trip System
(Casing / Bearing / Bulkhead of Pump Shaft)
Equipment for Oil Pollution Mitigation
a) Deck Scupper Plugs with Higher Gutter Coaming on Main Deck
b) Manifold Spill Tank
c) Emergency Stop System of COP
d) Emergency Shut Dow System of manifold Gate Valve
e) Emergency Damper of Pump room Exhaust Fan
Guidelines For Prevention Of Oil Pollution Mitigation
1) Watch the Sea surface around the Vessel
2) The Gangway Watch stander and cargo operation watch stander shall periodically monitor the surface of outboard sea to check for oil leakage, and to try to detect such oil leakage (if any) early. He shall also monitor the emission from the funnel stacks (excessive soot or sparks) and report any abnormality to the duty officer.
3) If floating oil is observed on the surface of the sea in the vicinity of the vessel, it shall be reported immediately to the officer on duty or the Chief Officer (whether the oil is originating from own vessel or not).
4) The officer on duty shall allocate crew for periodic monitoring on deck and associated spaces. The following are some examples of condition monitoring required: Which includes the conditions around the vessel, mooring ropes, and the surface of the outboard sea and the like. Also to detect any irregularity onboard and outboard the vessel.
5) The officer on duty shall have the crew patrol or monitor the surface of the sea near the following places or outfit as required:
Sea-chest (Cargo & Ballast)
Overboard discharges,
Floating hose,
Stern tube,
Shore connection, and
Near SPM & SBM if applicable.
6) The company designated checklists should be used to ensure proper compliance of the above.
Action by Duty Officer
If oil is observed on the water in the vicinity of the vessel and there is reason to suspect that the oil is originating from the vessel, all cargo transfer operation shall be suspended, and the Master shall immediately be notified.
Appropriate notification in accordance with SOPEP/OPA90 and shall be executed. Immediate action should be taken to reduce such outflow (e.g. Depressurizing the system, Adjusting the level, etc.)
Plugging Deck Scupper Plugs
Suitable scupper plugs shall be used the expansion-type oil resistant rubber- mechanical scupper plug.
As a companys standard, the main deck scuppers, after being fitted tightly in place, shall be further sealed with temporary putty. This is a further preventive measure, in case of improper surface / sealing of scupper opening.
The ship specific Scupper Checklist shall be prepared & used for confirming the above. Oil Coamings (e.g. save-all trays to air pipes serving oil tanks, mooring winch save-alls, etc) shall be effectively plugged, and the ship specific Oil Coaming Plug Checklist shall be prepared and used for confirming it.
If rainwater collects on the aft main deck, the rainwater may be released through the aftermost scuppers after carefully checking and confirming that No Oil water or Traces of Oily sheen is mixed with the rainwater.
Such draining in port shall be carried out only after Loading Masters permission, bearing in mind the above.
Oil absorbent pads should be used as a precautionary measure, when draining rain water in port. Personnel shall continuously attend such operation and after completion, confirm with the COC the final status of scupper.
Also Siphon Line, if applicable, between Main deck cargo area to Accommodation area is to used for draining effectively.
However, if collected water is contaminated with oil, or if terminal refuses to let the water through the scupper, then suitable means such as oil catcher (oil absorbent pads) to clear such oily sheen should be used to the satisfaction of the terminal representative.
Related articles:
Oil pollution prevention method
How to prevent spillage of oil cargo
Oil disaster prevention
Tanker equipment and machinery
General guidance for oil tankers
General precautions at work for tankers
What are the tank cleaning ,purging & gas free check items
Other Info Pages
Home Our home page
Site Map Page listing for this site.
Site Use and Privacy - Read our privacy policy and site use information.
Contact us
Copyright © 2009 Ships business.com All rights reserved.
Oil disaster prevention Precautions to be taken
Oil loading preparation
Crude oil washing Procedures & Guidelines
Oil discharge preparation Check items prior entering port
Operation of inert gas system The basic procedure
Gas freeing arrangement for oil tanker
Handling guideline for oil cargo
Preparation for loading oil cargo
How to prevent spillage of oil cargo
General precautions for oil cargo loading in tankers