Bunker Survey Procedure Training
Bunker Survey Procedure Project
Bunker Survey Procedure Sample
Bunker Survey Procedure Sample

Bunker Survey Procedure Training

BUNKER CALCULATION
It has been observed that even for such a simple procedure much headache is being taken.
The bunker calculation is simple and needs the following:
– Tank Sounding data and Tank Capacity Table. The Corrected Sounding means below is the sounding after correcting with vessel’s trim and list.
– Temperature of Oil on Tanks,
– Oil Density @15C,
– Table ASTM 54B (VCF) and Table ASTM 56 (WCF
Commonly this is done prior to and after a time charter period than mentions as On Hire Bunker (prior) and Off Hire Bunker (after), the Bunker Survey is required to check the amount Bunker transferred or supplied onto the Ship’s Tanks. This job is associated with Ship’s Chief Engineer, the Person who responsible for bunker onboard.
Now we could go with sample of 1 tank to test the calculation.
** Question :
FO Tank No. 1 Center, Corrected Sounding = 3.27 Meter, Temperature = 34 degrees celcius, Density @ 15 C = 0.9870.
Tank Volume at Sounding 3.20 M = 157.20 Cubic Meter, at Sounding 3.30 M = 163.60 Cubic Meter.
** Answer :
– The Quantity in Metric Ton = Oil Vol x VCF x WCF,
– Observe Volume = {(3.27 – 3.20) / (3.30 – 3.05) x (163.60 – 157.20)} + 157.20 = (0.07/0.10) x (6.40) + 157.20 = 4.48 + 157.20 = 161.68 Cu.M.
– T 54B (VCF) > Density @ 15C 0.9903 at 34 C = 0.9870 (see the picture below you need to interpolate if any different numbers on both columns).
T 56 (WCF) : Density @15C 0.9903 at 34 C = 0.9892 (Quick formula with reducing factor for WCF is Density @ 15C – 0.0011 = 0.9903 – 0.0011 = 0.9892). We don’t need to see the table anymore.
– So, The Quantity in MT is 161.68 x 0.9870 x 0.9892 = 157.85 MT. Sample calculation tanks sounding attached below.
If you do calculation with Volume in Barrel, just uses ASTM Table 6B for VCF, ASTM Table 11
for WCF in Long Ton and then ASTM Table 13 for WCF in Metric Ton.

BUNKER SURVEY (EITHER ON-HIRE BUNKER SURVEY OR OFF-HIRE BUNKER SURVEY)

The on/off hire bunker & condition surveys are most frequently required to be performed combined but we also perform either just on/off hire bunker survey or on/off hire condition survey separately. It is also common to be performed jointly with the other interested part, being one company appointed by Owners and other by Charterers. Bunkers are typically the largest contributor to the operational cost of a ship, with the physical transfer of fuel taking place thousands of miles away from the contracting offices. As neither the buyer nor the seller is present to witness the bunker quantity transfer and sampling procedures onboard, any post- delivery investigation on quantity shortage or sampling dispute is usually fu.

Our arm for Bunker Survey Detective & Petro Inspect rigorously seeks to maintain its high efficiency in meeting successful and resulted in significant cost savings for our clients.

Our Bunker Survey services minimum 350 ships a year mainly for Off Hire Bunker Survey (Redelivery).

To date we have recovered over 10000’s of Metric tones in un-declared fuel, averted numerous cappuccino bunkers and prevented bribery thus saving charterers and owners millions of dollars! Not only that we also serve as ‘protective surveyors’ on charterer’s or owner’s behalf ensuring no mal-practice takes place during bunkering such as cappuccino bunkers, gravitating of fuel, bribery etc. and at the same time ensuring that only the best marine surveying and business ethics are practiced.

Our bunker fuel concealment detection largely depends on the hands-on approach and practical experience of surveyors and therefore we hire only the best in the industry. Our surveyors being ex-seafarers themselves are well-versed with the various techniques used to conceal bunkers on board.

BUNKER SUPPLY SUPERVISION (BQS) SERVICES;

We perform quantity determination during a bunkering operation.

These general requirements are already part of the SS 600 or ISO 13739 but it is essential that each of our individual surveyor shall duly follow them so as BQS are done with transparency, efficiency, professionalism and independently at following stages.

BEFORE BUNKERING:

Introduce yourself clear as surveyor, representative of vessel’s principals for Bunker Survey.
Conduct the survey as per concordance with ISO 13739/2009 “Procedures for transfer of bunkers to vessels”.
Request the barge Cargo’s Officer not to strip the tanks and to blow the line only after measurements.
Go to measure physically all nominated & non-nominated tanks, with C/E or his assistant to witness the gauging.
The surveyor must go on board of the barge with his own (certified by a competent and contactable authority) hand tape and thermometer.
In presence of C/E and Bunker barge Cargo officer; all tanks are measured by HANDTAPE, including ALL non-nominated tanks, settling, service, overflow and sludge tanks. At least three barge tanks are measured for determination of the supplied fuel temperature. Levels and temperatures taken to be recorded on the Bunker barge sounding ticket. Remote gauging and indications to be recorded, as an additional reference.
For ARA: Whessoes have preference to manual gauging results. We ask Ship’s Officer to produce the last calibration date of the Whessoes.
If no Whessoes are available we insist to the Ship’s Officer on producing the original of the barge calibration tables with a certified stamp from an approved and recognized body.
Hand tape measurement and printed form from barge has to be signed by all parties concerned.

DURING BUNKERING:

We closely monitor the smooth undergoing of the bunkering procedure.
We observe carefully the bunker hose for any excessive vibrations and “air in liquid” specific sounds.
We make checks at random intervals on the bunkering barge, verify the levels in the tanks already declared as empty/stripped and verify carefully the bunker piping for any derivation.

AFTER BUNKERING:

Bunker Survey Procedure Project

We request to C/E a printed form from automatic ships measurement after bunkering, in order to verify if expected volume is approximatively received.
We take temperature of fuel received immediately after the bunkering (especially in cold waters).
When barge Cargo Officer finish the delivery ensure he announces it to the PIC at the bunker station and stop the delivery WITHOUT BLOWING the lines until the measurements are done and the final figures ascertained (again, this must be established and agreed upon from the beginning)
Volume at observed temperature has to be jointly measured by surveyor and C/E.
Blowing must be done in only one tank of the vessel for easy gauging.
Request the Barge’s Cargo Officer for a printed form to be signed by parties attending: Barge Captain – C/E – Surveyor.
We measure the receiving tanks from seagoing vessel. Ullage can be taken, when good reference to reference height as initial measured (tank height).
We ask the barge Cargo Officer to open the hatch to visually check the content of each tank in case of suspicion of fraud attempt.
Ensure the CE to record on the BDN “For volumes at observed temperatures only, final quantity subject to lab tested density”
Advise the CE not to sign any paper if the barge Cargo Officer stops pumping before the final quantity is reached.
ln case of too much discrepancy (more than 0,5%, a LOP – Letter Of Protest has to be issued. in case of any doubts:
Re-gauge all barge tanks (nominated & non-nominated tanks)
Re-gauge all seagoing vessels’ tanks (nominated & non-nominated tanks), including setting tank, daily service tank and overflow tank.

CAPUCCINO BUNKERS:

Pay special attention to abnormal noises and vibration of bunker hose, and make note in SOF of the possibility of air mixed in the f