Section 5 Control and monitoring

5.1.1 Control engineering arrangements are to be in accordance with Pt 6, Ch 1 Control Engineering Systems, as applicable. The connection of, and the electrical load transfer to and from, an external electrical power supply are only to be controlled on board using shipboard arrangements.

5.1.2 External control of ship equipment may only be provided when in accordance with Pt 7, Ch 13, 5.1 General 5.1.5. Otherwise, external arrangements may be used to send requests for action to ship personnel for consideration.

5.1.3 Integration or connection with external, control, alarm and safety systems is to be ‘fail-safe’.

5.1.4 The effects of failure of control, alarm and safety system and data communication link connections are to be documented along with resulting failure responses in the submission required by Pt 7, Ch 13, 1.4 Plans and information 1.4.6.

5.1.5 Details of proposals that would involve external control of ship equipment to respond to potentially hazardous situations detected externally are to be submitted for consideration. Provided that the arrangements are considered to be in accordance with the provisions of an acceptable and relevant standard, the following external control functions may be permitted:

• initiation of load reductions;
• initiation of electrical load transfer to ship sources of electrical power; and
• initiation of Emergency Shutdown.

5.1.6 The connection power circuit is to be isolated, and for high-voltage connections connected to earth so that it is discharged and so maintained that it is safe to touch, until the connections necessary for safe and effective operation are correctly established, including control, alarm and safety system and data communication link connections.

5.1.7 Following the correct establishment of the necessary connections in accordance with Pt 7, Ch 13, 5.1 General 5.1.6:

• where applicable, the connection power circuit may be disconnected from earth; and arranged such that only then
• may the request to make the external power supply connection points live described in Pt 7, Ch 13, 5.1 General 5.1.8 be sent.

5.1.8 Ship control system arrangements are to be provided to request the external electrical power supply conductors to be:

• where applicable, disconnected from earth; and then
• made live up to the connection points.

5.1.9 An alarm is to be provided at a machinery control station that is attended when connected to an external electrical power supply upon failure of arrangements required to maintain ready availability in accordance with Pt 7, Ch 13, 2.1 General requirements 2.1.3 (for example pre-heating).

5.1.10 Additional alarms with their associated safeguards are indicated in Table 13.5.1 Additional alarms and associated safeguards. These are in addition to those required by other Parts of the Rules.

5.1.11 Means are to be provided to allow testing of control, alarm and safety system connections with external arrangements, including operation of Emergency Shutdown facilities, before electrical connection to an external power supply.

5.1.12 If, depending upon the in-port shipboard work organisation, no machinery control stations are continuously attended while connected to an external power supply, then alarm transfer arrangements that activate an audible indication to warn relevant duty personnel of alarm initiation may be accepted. An audible warning from any portable devices is to be provided in the event of loss of the wireless link.

5.2.1 Connection Equipment is to be capable of unattended operation under normal operating conditions after correct application of the connection. Remote indication of active ship equipment faults at a machinery control station that is attended when connected to an external electrical power supply is to be provided. Details of arrangements that involve periodic attendance to inspect and adjust Connection Equipment may be submitted for consideration.

5.2.2 A control station is to be provided locally to Connection Equipment cable reel, cranes and gantries that permits identification of faults and permits safe and effective supervision and control of this equipment in the foreseeable environmental conditions.

5.2.3 A fixed means of two-way voice communication with a machinery control station that is attended when connected to an external electrical power supply is to be provided at the control station required by Pt 7, Ch 13, 5.2 Connection Equipment control and monitoring 5.2.2.

5.2.4 The control station required by Pt 7, Ch 13, 5.2 Connection Equipment control and monitoring 5.2.2 is to be provided with a means for operators to:

• select manual control; or
• lock equipment in position; or
• where provided, select automatic adjustment.

This status is to be indicated remotely at a machinery control station that is attended when connected to an external electrical power supply.

5.2.5 When the equipment status selection referred to in Pt 7, Ch 13, 5.2 Connection Equipment control and monitoring 5.2.4 is changed whilst an external electrical power supply is connected, an alarm is to be activated at a machinery control station that is attended when connected to an external electrical power supply.

5.2.6 Where correctly applied connection equipment is not protected from submersion in the water between the ship and shore (e.g. submersible equipment, equipment routing or slack cable prevention by torque control), an alarm is to be provided at a machinery control station that is attended when connected to an external electrical power supply when Connection Equipment approaches a situation where it may be submerged in the water between the ship and shore, for instance due to tidal changes. The time between alarm initiation and possible exposure to this water is to be sufficient to allow the equipment to be attended and adjusted prior to exposure to water.

5.3.1 The requirements of this sub-Section apply to arrangements for the emergency disconnection of live electrical power from the connection to an external electrical power supply.

5.3.2 Emergency shutdown facilities are to be provided, in accordance with clause 4.9 of IEC 80005-1 Utility connections in port — Part 1: High voltage shore connection (HVSC) systems — General requirements, that:

• When activated, will instantaneously open shore connection circuit-breakers onshore and on-board ship.
• Fail-safe hard-wired circuits (safety circuits) shall be used for emergency shutdown. This does not preclude emergency shutdown activation commands from programmable electronic equipment, for example programmable protection relays.
• The relay contacts of the safety circuit shall be designed in accordance with IEC 60947-5-1Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching elements — Electromechanical control circuit devices and for a rated insulation voltage of U_i = 300 V, AC 5 A, DC 1 A.
• Minimum current value in the safety circuits shall be 50 mA.
• These facilities are to be automatically activated (see Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.6).

5.3.3 High-voltage Connection Equipment is to be either:

1. provided with permanent arrangements for manual discharging and routed to prevent personnel access to live connection cables and connection points by barriers and/or adequate distance(s) under expected operating conditions; or

2. automatically discharged so that it is safe to touch with immediate initiation of switching device closure following the isolation from ship and shore electrical power supplies required by Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2.

5.3.4 For ships that are intended to connect in ports where Connection Equipment may move into a hazardous area associated with the terminal or port area as a result of the ship inadvertently leaving the berthed position (slipping/ breaking of moorings, etc.), this condition is to be included in the Design Statement. The arrangements are to comply with Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.3.(b) and, additionally, other electrically powered connection equipment that is not intrinsically safe is to be arranged for automatic isolation.

5.3.5 Means are to be provided to detect or predict tension in the external electrical power supply connection cable that activate the Emergency Shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 before damage occurs. Where alternative arrangements to tension detection are proposed (automatic break-away release, connectors with shear bolts and pilot lines, connection with ship/shore Emergency Shutdown system, etc.), details are to be submitted for consideration.

5.3.6 To detect and react to the withdrawal of plugs from socket-outlets while power supply connections are live, the emergency shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 are to be activated automatically, opening the ship and shore HVSC circuit breakers in a maximum time of 200 ms, before the necessary degree of protection is no longer achieved or power connections are broken by the removal of a plug from a connected socket-outlet, including in-line connections.

5.3.7 For high-voltage connection points on board where the means of locking together plugs and socket-outlets required by Pt 7, Ch 13, 3.3 Connection cables, plugs and socket-outlets 3.3.4 are not interlocked to prevent removal from the locked position when the Connection Equipment power connections are not discharged so that they are safe to touch, the Emergency Shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 are to be activated when connected plugs are moved from the locked position. Consideration may be given to relaxing this requirement when evidence is submitted which demonstrates that appropriate controls and procedures acceptable to LR are in place to control personnel access plugs and socket-outlets.

5.3.8 Where connection power plugs are connected to socket-outlets mounted on a switchgear enclosure, arrangements are to be provided to activate the Emergency Shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 in as short a time as practicable in the event of an arc occurring in the enclosure at the rear of the socket-outlets.

5.3.9 Where Pt 7, Ch 13, 3.1 General 3.1.7.(b) applies, the Emergency Shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 are to be activated in the event of loss of earth connection continuity being detected.

5.3.10 Means to manually activate the emergency shutdown facilities described in Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.2 are to be provided at:

• at a machinery control station that is attended when connected to an external electrical power supply;
• in close proximity to the connection cubicle;
• at the switchboard where the fixed cables from the shore connection cubicle are received; and
• at active cable management system control locations.

Additional manual activation facilities may also be provided at other locations where it is considered necessary. The means of activation are to be visible and prominent, prevent inadvertent operation and require a manual action to reset.

5.3.11 An alarm to indicate activation of the Emergency Shutdown is to be provided at a machinery control station that is attended when connected to an external electrical power supply. The alarm is to indicate the cause of the activation. For power supply restoration, see Pt 7, Ch 13, 4.5 Ship power restoration 4.5.1 to Pt 7, Ch 13, 4.5 Ship power restoration 4.5.3.

5.3.12 The emergency shutdown facilities are to be activated in the event of:

1. loss of equipotential bonding, via the equipotential bond monitoring devices (where utilised);
2. over-tension on the flexible cable (mechanical stress); see IEC/IEEE 80005-1 Utility Connections in Port — High voltage shore connection (HVSC) systems – General requirements, Annex E 7.2 Cable management system;
3. the remaining cable length being too short; see IEC/IEEE 80005-1 Utility Connections in Port — High voltage shore connection (HVSC) systems – General requirements, Annex E 7.2 Cable management system;
4. loss of any safety circuit;
5. activation of any manual emergency-stop;
6. activation of protection relays provided to detect faults on the HV connection cable or connectors; and
7. disengaging of power plugs from socket-outlets while HV connections are live before the necessary degree of protection is no longer achieved.

5.4.1 The data communication link between ship and shore arrangements, where applicable, is to be used for communicating the following information:

1. shore transformer high-temperature alarm;
2. HV shore supply circuit-breaker protection activation, see Pt 7, Ch 13, 3.1 General 3.1.3;
3. permission to operate HV circuit-breakers for HV ship-to-shore connection;
4. if ship or shore control, alarm or safety system self-monitoring properties detect an error that would affect safety of connection, see Pt 7, Ch 13, 4.3 Protection 4.3.9;
5. indication of emergency-stop activation, see Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.11;
6. where provided, shore control functions, see Pt 7, Ch 13, 4.1 Electrical Load Transfer 4.1.4
7. indication of emergency disconnection of the shore supply, see Pt 7, Ch 13, 5.3 Emergency shutdown 5.3.11; and
8. failure of the battery's charging or activation of the back-up system.

The communication protocol for the communication link between ship and shore shall be in accordance with IEC/IEEE 80005-2 Utility Connections in Port — High and low voltage shore connection systems — Data communication for monitoring and control or an equivalent standard acceptable to LR.