Bonding wire ? what does isgott say ?
In the past, it was usual to connect the ship and shore systems by a bonding wire via a flameproof switch before the cargo connection was made and to maintain this bonding wire in position until after the cargo connection was broken. The use of this bonding wire had no relevance to electrostatic charging. It was an attempt to short-circuit the ship/shore electrolytic/cathodic protection systems and to reduce the ship/shore voltage to such an extent that currents in hoses or in metal arms would be negligible. However, because of the large current availability and the difficulty of achieving a sufficiently small electrical resistance in the ship/shore bonding wire, this method has been found to be quite ineffective for its intended purposes and, furthermore, a possible hazard to safety. The use of ship/shore bonding wires is therefore not supported.
While some national and local regulations still require mandatory connection of a bonding cable, it should be noted that the IMO %u2018Recommendations for the Safe Transport, Handling, and Storage of Dangerous Substances in Port Areas%u2019 urge port authorities to discourage the use of ship/shore bonding cables and to adopt the recommendation concerning the use of an insulating flange or a single length of non-conducting hose as described above. Insulating flanges should be designed to avoid accidental short circuiting.
MMD / MCA ORALS MASTER EXAM
