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Local Fuel – Shoreham Oil Terminal
Gasoline Ship Import – Layers of Protection Analysis
P & I Design Ltd
DOCUMENT NO: LF364002_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: E DATE: 30.07.15
Tel: + 44 (0)1642 617444
PAGE 20 OF 38
Fax: + 44 (0)1642 616447
www.pidesign.co.ukPrior to a transfer taking place, Local Fuel receive details of the ship, parcel size and
timings. A third party surveyor then dips the receipt tanks to check the ullages are suitable
for the quantity. The third party surveyor is given a process order detailing the receipt
tanks and in which order they will be selected. The ATG readings are compared with the
dip values to confirm that they are in working order and within calibration tolerance.
Under all operating conditions, the quantity of gasoline available on the ship is less than
the ullage available at the terminal. No export operations are carried out when a tank is
importing gasoline.
Local Fuel are operating a rigid policy that the imported Gasoline (1000 MT ) will always
be assigned to a tank with ample ullage space: this to avoid an over fill potential. The
gasoline stock level is tracked daily as a book stock confirmed by regular physical dips.
Ship compartments are not split.
Level readings are monitored and logged hourly during transfer. When the level is
expected to reach the normal fill level, during the predicted last half hour, level readings
are constantly monitored by the terminal operator in the control room. Also, a responsible
person will physically watch the last half an hour of receipt of product into a tank. The
responsible person will be in contact with the control room by radio, the shift controller
will be in the control room looking at the tank gauge monitor.
A responsible person on the ship, the Local Fuel jetty operator, the third party surveyor and
the terminal operator will be in constant radio contact, on a dedicated channel, when
import operations are taking place.
Alarms from the ATG
All gauges are fed to the UCOS / SCADA
Tank 1
Normal fill alert 89% (9818 mm)
High Level Alarm 90% (9964 mm)
High High Alarm 92% (10111 mm)
Tank 3
Normal fill alert 86% (9452 mm)
High Level Alarm 88% (9651 mm)
High High Alarm 90% (9851 mm)
Independent Alarms
Tank 1 high high level switch and alarm 92% (10111 mm)
Tank 3 high high level switch and alarm 90% (9851 mm)
These initiate the shut down system
The above alarms are all annunciated.
The percentage figures above are based on tank heights of 11m