Chapter 1
Sulphur Oxides (SOx)
List of Items:
1. Bunkers Tanks Plan with segregated tanks for high(4.5%)/low(1.5%) sulphur contents.
2. Fuel Grade change over procedure.
3. Bunker Delivery Notes.
4. Example of filling up Engine Log Book during changing over fuel oil.
5. Samplings procedure.
6. Samplings Log Book.
2. Changing over procedure from HFO 4.5% to 1.5% of sulphur content
Once vessel receives information to proceed to SECAs region (SOx Emmision Control Areas) engine staff has to decide which Settling tank will be used as Tanks for HFO with 1.5% of sulphur content. It is important, that when vessel trades close to SECAs region with possibility to enter in short time period, one of Settling Tank should be keep with such HFO 4.5% level, which allows to consume fuel oil and refill a/m tanks (with HFO 1.5% of sulphur) in time before vessel enter SECAs region.
For this type of vessel (see Diagram Fuel Oil Filling and Transfer System no.4.8 from Machinery Operation Manual) it was decided to keep HFO (1.5% sulphur) in tank F.O. Deep Tank Centre Fore (total capacity 325.1 cbmtr), which allows vessel to trade in SECAs region within 7 days. The rest tanks , as well settlings and service tanks can be keep under HFO 4.5% of sulphur. As it was mentioned before, when trading area is out of SECAs, vessel has to consume HFO from tanks designated as HFO TK 4.5% of sulphur, and it may be used any of settling and service tank. Before vessel enter SECAs area, one of settling tank has to be consumed/emptied from HFO 4.5% and refilled by HFO 1.5%. Than consumption of 4.5% should be taken from F.O. Service tank up to 20% volume capacity. After that fuel 1.5% should be purified from dedicated settling tank with 1.5% to service tank. Consumption has to be continuous from settling tank. From vessel experience factor it was calculated that after changing to HFO 1.5% it takes 6 hrs when all vessel machinery will run on low sulphur fuel (1.5%).
Procedure of changing from HFO 4.5% to 1.5% of sulphur contents:
· Consume HFO (4.5%) settling tank F.O. Deep Tank Starboard to empty.
· Changeover consumption from Starboard to Port Settling Tank.
· Consume HFO (4.5%) from service up to 20% total capacity .
· Meantime transfer HFO 1.5% from F.O. Deep Tank Center Fore to F.O. Deep Starboard settling tank.
· Start HFO purifier to fill up service F.O. Service Tank Port with HFO 1.5%.
· Changeover consumption from Port Settling Tank to Starboard Settling tank.
· Maintain consumption from F.O. Deep Tank Starboard settling and F.O. Tank Service Port.
· After 4 hours record completed changing over procedure. Report to bridge vessel under HFO 1.5%.
It is a requirement of Regulation 18 that any fuel oil for combustion purposes delivered to and used onboard shall be recorded by means of a Bunker Delivery Note (BDN). This implies that a bunker delivery note shall be presented for every barge delivery every grade.
The BDN’s are to be kept on board and readily available for inspection at all times. It
shall be retained for a period of three years after fuel oil has been delivered on board.
Ships Name: Surrey
Call Sign: MRSG8
Imo No: 7928201
Bunker Delivery Note:
This is to certify, that fuel oil supplied to LPG/C Surrey is in conformity with regulation 14 and 18 Marpol 73/78 Anex VI. Fuel oil supplied on vessel has a sulphur level below % and is free from inorganic acid, does not include any added substances or chemical waste which either jeopardizes the safety of ship, adversely affects the performance of machinery, is harmful to personnel or contributes overall to additional air pollution.
Name and IMO number of ship supplied fuel oil:
M/T IMO No: ___________________
Bunkering Port: _____________________________________________
Date and time of commencement of bunkering: ____________________
Date and time of completion of bunkering: ________________________
Name, address, and telephone number of marine fuel oil supplier:
___________________________________________________________
Product name: _______________________________________________
Quantity (metric tons): ________________________________________
Density at 15°C (kg/m3): ______________________________________
Sulphur content (% m/m): _____________________________________
Master of Surrey: Person in charge of delivery fuel oil:
(print name, sign and stamp) (print name, sign and stamp)
4. Example of filling up engine log book during changing over fuel oil from 4.5% to 1.5%.
All operation of changing fuel oil from 4.5% of sulphur to 1.5% of sulphur should be recorded in Engine Log Book on the left blank page opposite to Machinery Running Section records. It should be recorded the time, ship’s position at the start and completion of change over to and from 1.5% fuel, together with details of the tanks involved and fuel used.
Ship’s position: LAT: 45°20.5’ N LON: 003°15.6’W
Commenced changing over fuel from 4.5% to 1.5%.
ROB:
- HFO tank Deep Tank Center Fore – ROB 280.0 mt of fuel oil with 1.5% sulphur.
- HFO settling tank – ROB 0.5 mt of fuel with 4.5% sulphur.
- HFO service tank – ROB 2.5 mt of fuel with 4.5% sulphur.
Settling F.O. Deep Tank Starboard was stripped to epty and service F.O. Tank Port was stripped up to 20% before from FO 4.5% in order to fill them up by FO 1.5% according with changing over procedure.
Settling and service tank refilled with FO 1.5% of sulphur.
Time: 1630 Lt
Ship’s position: LAT: 43°21.5’ N LON: 003°15.6’E
Completed changing over fuel from 4.5% to 1.5%.
Main engine, auxiliaries and all machinery run on FO 1.5% of sulphur.
- HFO tank Deep Tank Center Fore – ROB 117.0 mt of fuel oil with 1.5% sulphur.
- HFO settling tank – ROB 150.0 mt of fuel with 1.5% sulphur.
- HFO service tank – ROB 13.0 mt of fuel with 1.5% sulphur.
C/E sign
Regulation 18 of Marpol 73/78 Annex VI requires that every BDN is to be accompanied by a representative sample of fuel oil delivered, taking into account the guidelines in Resolution MEPC.96(47). The sampling is to be sealed and signed by the supplier’s representative and the master or officer in charge of the bunker operation on completion of bunkering operation, and retained under the ship’s control until the fuel oil is substantially consumed, but in any case for a period of not less than 12 months from the time of delivery. Although MEPC.96(47) specifies that the volume of the sample bottle should be no less than 400 ml. Due to potential need for repetitive testing. Intertanko has recommended that sample volume is not to be less than 750 ml.
For the sake of good order it should be noted that the practical purpose of this sample is to enable port states to verify the sulphur content of the fuel, as well as to verify that fuel oil quality is in accordance with Regulation 18.
If vessel participates in fuel testing programme:
As Annex VI specifies that the Annex VI sample is not to be used for commercial purposes, DNV Petroleum Services reccomends that ship’s already participating in a fuel oil quality testing scheme, the Annex VI sample should be the fourth sample (in addition to the sample sent to laboratory for testing, suppliers sample and the retained on board sample). The reason is that it is considered an advantage to always have an Anex VI sample onboard in case of port state control.
Sampling procedures:
Note that the reffered to Resolution MEPC.96(47) specifies in detail that the fuel sample is to be obtained at the receiving ship’s inlet bunker manifold and is to be drawn continuously throughout the bunker delivery period. The term continuously drawn is specified to mean a continuous collection of drip sample throughout the delivery of bunker fuel. Sampling methods are further clarified as either; manual valve-setting continuous-drip sampler (equivalent to DNV Petroleum Services’ Line sampler), time-proportional automatic sampler, or flow-proportional automatic sampler.
Sampling Bottle:
The sampling bottle labels should contain the following information:
· Location at which, and the method by which, the sample was drawn
· Bunkering date
· Name of bunker tanker/bunker installation
· Name and IMO number of the supplier’s representative and the ship’s representative
· Details of seal identification
· Bunker grade
Bunkering Date:
Bunker Barge or
Installation Name:
Supplier’s Name
and IMO number
Bunker Grade:
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