300-Cargo Operations / 748
Car
g
o
Op
erations
BOS-PRD-07.900602
4
.
9
.
2 Du
rin
g bu
lk
c
ar
g
o o
p
erations
The
Master
or person appointed for the task
shall
ensure that he/she can see the bulk hose(s) at all times
and he/she
shall
not allow other operations to distract his/her attention away from the hose(s).
The bridge and installation responsible or shore provider (as applicable)
shall
confirm quantities discharged
and received.
The deck crew, installation crane driver or shore provider (as applicable)
shall
be readily available and close
at hand throughout any transfer operation.
Sufficient warning
shall
be given by each party prior to changing over tanks.
Installation, provider or vessel valves
shall
never be closed against an operating cargo pump.
If at any stage in the operation, the
Master
, provider or installation responsible are in any doubt as to the
integrity of the operation, then the operation
shall
be terminated.
The loading rate
shall
be reduced to a manageable level to allow the receiver to top off tanks safely.
When pumping has finished, purge air
shall
be used to clear the lines (dry bulk).
Pressurised air
shall
be released before disconnecting the hose (dry bulk).
When the hose is disconnected the end
shall
be fitted with a suitable cap or blank.
During periods of darkness, adequate illumination
shall
be available throughout the operation.
All bulk hoses used offshore are to be of sufficient length for safe operation and have internally swaged or
other approved clamp fittings.
Unapproved repairs to hoses
shall not
be made. In the transfer of bulk products, consideration
shall
be given
to the fitting of self-sealing weak link couplings in the hose string.
4
.1
0
Man
u
al
S
o
u
n
d
in
g
Met
h
o
d
s
Man
u
al
S
o
u
n
d
in
g
Met
h
o
d
:
Sounding is a method used to measure the height of the fluid from the surface of the fluid to the bottom of
the tank.
The vessels are equipped with sounding tubes and reinforcing plates under the tubes. Sounding tubes are
steel pipes which lead upwards from the ships' tanks to a place on deck.
In this method, a sounding device is used with a heavy weight bob attached to one end of the sounding
device using a strap hook. To perform the measurement the sounding device is passed through the
sounding tubes. The weight of the lead of the sounding device strikes the reinforcing plates when it reaches
the bottom of the tank. The height of the fluid can be measured from the markings made by the fluid on the
graduations of the sounding device.
The volumetric quantity of the tank
shall
be determined by the sounding table in the sounding book.
Ulla
g
e meas
u
rement Met
h
o
d
:
Ullage is the void space in the tank, measured from the top of the tank to the upper surface of the fluid.
The ullage device may be portable and hand carried and/or motorized. The measurement can be performed
by the opening of the ullage hatch (ex: man-hole’s cap located on the upper part of the tank).
The volumetric quantity of the tank
shall
be determined by the ullage table in the sounding book.
Version 04. Original date: 22/06/2012. Version date: 31/12/2014. Valid version only on QMS site. Uncontrolled document when printed.
Procedure prepared by: BOS Operations Department Project Manager. Approved by: BOS Operations Manager Director. Validated by: BOS Quality Representative
9 / 17
300