5.12 CONNECTING CARGO HOSES
The connection of cargo hoses or loading arms is an industrial operation
requiring a number of prior inspections and precautions. If a work permit
system is in use on the tanker, a work permit should be completed for
the cargo hose/arm connection operation.
The following inspection items must be completed prior to connecting
hoses or arms:
If ship's derricks are to be used, inspect:
Topping and cargo runner winches.
Topping lift wires and runner wires for condition.
Chains and shackles.
Deck and kingpost fittings for cracks or corrosion.
Guys or running rigging for condition/damage.
Lubrication of all lubrication points.
Crew personal protective equipment: hard hats, shoes, gloves, eye
Portable fire extinguishers.
Connection tools and studs.
Hose stoppers, slings, or bridles.
Inspect the condition of all manifolds to be used, clean/dress any
soiled or corroded flange faces.
Provide new gaskets for each manifold to be used.
New hose flange studs and nuts must be used.
Uncover the hose manifold containment trough and prepare trough pumping-out
Label the manifolds to be used for discharging each grade of cargo.
If multiple grades of cargo will be discharged, label both sides of
each manifold valve with the name/grade of cargo to be discharged.
It is the responsibility of the chief officer to also observe the condition
of the shore terminal hoses, derricks, loading arms, connecting flanges,
gaskets, connecting devices, supporting equipment and personnel protective
equipment and to order that connection operations be stopped if any
significant defects are noted.
Hoses should be fully supported during connection. The hose connection
operation provides numerous opportunities for crushed/ broken hands
or fingers if conducted carelessly. Ensure that only competent personnel
operate winches and that they fully understand any hand or verbal signals/orders
to be used.
5.12.2 Shore bonding wire
Studies have indicated that a ship-to-shore bonding wire does not achieve
the purpose for which it was intended unless the wire is an impracticably
large diameter. The preferred method of preventing incentive sparks
when the shore arm/hose is brought in close proximity to the ship's
manifold is for the arm/hose installation to include an insulating flange.
The insulating flange prevents the passage of any current from one structure
to the other and eliminates the possibility of an incendive sparks (if
Nevertheless, the use of bonding wires continues to be mandated at some
terminals. If one is offered for use on board it should be connected
Verify that the bonding wire switch is in the open position.
Find an exposed metal point away from the loading manifold and connect
the bonding wire clamp to it.
Close the bonding wire switch.
Connect the loading hoses/arms.
5.12.3 Connecting hoses/arms
Loading arms are normally connected by the shore terminal personnel,
since they are operated by hydraulic equipment located on shore. The
ship's officer in charge should conduct the inspections indicated above
and observe the connection operation carefully to see that it is properly
Shore hoses or arms should be empty when brought aboard. If the hoses
or arms are full they may be drained into the ship's manifold trough
before connecting only if the shore personnel agree to let the ship
pump the trough to the shore containment after connection is complete.
After the arms have been connected verify that the loading arm support
stand is properly set and tightened up and that the loading arm vent
Enter the time each hose/arm is connected in the vessel's logbook and
port log. After the hose/arm connections are made, check that the hose
support rigging is suitably positioned for the entire duration of the
If hoses/loading arms are not connected, before the start of cargo discharge,
to all ship's manifolds which the vessel can use to discharge cargo,
the master should file a note of protest. File a note of protest also
if hoses/arms are used which are too small to permit the vessel to discharge
cargo at its best rate.