Page 390 - International safety guide for oil tankers and terminals

INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS AND TERMINALS

Determining that there is adequate space for the volume of bunkers to be loaded.
25.3ใช้เพื่อการศึกษาเท่านั้น---
Establishing maximum loading volume for all tanks.
Controls for the setting of bunker system valves.
Determining loading rates for the start of loading, bulk loading and topping-off.
Manning requirements to execute the operation safely.กพาณิชย์นาวี
Special precautions when loading into double bottom tanks.
Arrangements of bunker tank ventilation.
Internal tank overflow arrangements.

Verification of gauging system operation and accuracy.
Alarm settings on overfill alarm units.
Communication with the terminal to establish when bunkering can be undertaken.

Communications with the bunker supplier prior to commencement, to establish
and record the loading procedure to be followed and to determine how quantity
and quality checks may be carried out, particularly if safe access is needed
between the ship and a barge.
Methods of managing the handling of bunkers which have or may have a
hydrogen sulphide (H 2 S) content.
Testing procedures for determining the presence of hydrocarbon or H 2 S vapours.
งานห้องสมุด ศูนย์ฝ
Method of determining the temperature of the bunkers during loading.
ึ
Communications procedure for the operation, including emergency stop.

Monitoring of the bunkering operation and checking it conforms to the agreed
procedure.

Changing over tanks during loading.
Containment arrangements and clean-up equipment to be available.

Once the procedure is produced, it should be implemented by use of a check-list, an
example of which is included in Section 25.4.3.
--- The Bunkering Operation

Prior to commencing the operation, all pre-loading checks should be carried out and
communication systems verified as working.

The loading rate should be checked regularly.

When changing over from one tank to another, care should be taken to ensure that
an excessive back pressure is not put on the hose or loading lines.

When topping-off tanks, the loading rate should be decreased to reduce the
possibility of air locks in the tank causing mist carry over through the vents, and to
minimise the risk of the supplier not stopping quickly enough.

On completion of loading, all hoses and lines should be drained to the tank or, if
applicable, back to the barge, prior to disconnection. The practice of blowing lines
with air into bunker tanks is a common one, but has a high risk of causing a spillage
unless the tank is only part full and has sufficient ullage on completion of loading.

356 © ICS/OCIMF/IAPH 2006