Carriage, Handling and Storage of Dangerous Goods along

ACTIONS
Technical and Management (continued)
.
Cargo Valves
PORTS AND TERMINALS 21
Fire-safe shut-off valves should be fitted close to each tank on both inlet and outlet pipes. These
valves should conform to an international standard (for example, BS EN ISO 10497) or be of an
intrinsically fire-safe design, not constructed of cast iron or wafer bolted.
Motorised valve closure time should be in the order of 30 seconds, preferably more in order to avoid
surge pressure in the cargo piping and transfer hoses.
Cargo Pumps
Figure 10: Loading Arm Envelope
Cargo transfer pumps must be equipped with secondary containment to catch leaks from bearings,
packing and seals.
General Procedures for Cargo Transfer Equipment
Adequate procedures should be made for:
• operations, supervision and connecting/disconnecting of loading arms and, in the event
of an emergency, protecting the environment, personnel safety and equipment;
• visual inspection for cracks, leaks and wet spots prior to commencing loading/discharging
operations of cargo pipes, hoses, valves, joints and flanges. Records of these inspections
to be kept at the facility;
• inspection/testing and maintenance of cargo transfer equipment. Records of inspection/
testing and maintenance to kept at the facility; and
• checklist to be filled prior to using the cargo transfer equipment.
An inventory of all cargo transfer hoses should be made indicating products for which they may be
used, maximum allowable working pressure, date of manufacture and date of last pressure test.