Section 7: Tank Life
Life Expectancy and Service Life
2019 BATT Diesel/Jet Fuel Operations Manual
(Version K)
20
We Engineer Solutions
Section 7: Tank Life
Life Expectancy and Service Life
Definitions
Life expectancy
is the combined shelf and service life.
Wet date
is the date when a petroleum product or allied petroleum
product is first introduced into the BATT.
Service life
is the operational life of a tank. BATT service life starts
from the wet date or 12 months from the manufacturing date,
whichever comes first.
Shelf life
is the storage life of a new tank before the wet date starting
from the manufacturing date.
Service Life Extension Program
The maximum life expectancy of a BATT that follows the required
Service Life Extension Program
is up to 10 years from the date of
manufacture. The initial service life of a BATT is five years on the
assumption of normal operation (in accordance with the operations
manual). Based on the BATT's actual technical condition, SEI offers a
Service Life Extension Program
that
can increase its service life.
The BATT technical condition is evaluated based on the parameters of the SEI BATT
Service Life Extension
Program
. Scope of work within this program includes BATT inspections and, if required, corrective actions
(BATT repair and upgrade), which would be performed by SEI personnel at the SEI production facility. SEI
shall perform two factory inspections on the BATT to determine how the tank is aging. The inspections
occur at the end of year five and seven from the start of service life. SEI shall issue a certificate to the
operator to maintain with their service log.
The maximum service life of a BATT shall not exceed nine years following the required
Service Life
Extension Program
. The service life can never be stopped or reversed. Periods during which a BATT is
withdrawn from the service continue to be counted as part of its service life.
Shelf life of a BATT is up to 10 years, if it is stored in depot-conditions; indoor environment, out of direct
sunlight, with relatively even temperature between 10 and 43 degrees C, and with humidity between 50%
and 70%.
