Section 4 Control and monitoring and electrical power arrangements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 2 Machinery and Engineering Systems - Part 11 Support Systems - Chapter 2 Heating, Ventilation and Cooling Arrangements - Section 4 Control and monitoring and electrical power arrangements

Section 4 Control and monitoring and electrical power arrangements

Parent topic: Chapter 2 Heating, Ventilation and Cooling Arrangements

4.1 General

4.1.1 The control engineering arrangements are to comply with Vol 2, Pt 9, Ch 7 Control, Alerts and Safety Systems as applicable.

4.1.2 The equipment used in HVAC systems is to be provided with local control and monitoring arrangements.

4.1.3 Where isolation of equipment or systems can be carried out, means of indicating the status of isolation is to be provided at positions where the equipment and system can be operated and monitored.

4.1.4 Instrumentation to indicate the operational status of running and any standby equipment is to be provided locally and at any control station.

4.1.5 All pumps are to be provided with an indication of discharge pressure and a low discharge pressure alarm at each control station.

4.1.6 The power to all independently driven ventilation fans is to be capable of being stopped from position(s) outside the fire boundary which will always be readily accessible in the event of fire occurring in any space, as well as from the local control panel.

4.1.7 Electrical engineering arrangements are to comply with Vol 2, Pt 9 Electrotechnical Systems.

4.1.8 Ventilation air heating/cooling plants are to be provided with the following instrumentation and alarms as applicable:

  1. Indication of heating/cooling medium temperature.

  2. Indication of delivery air temperature.

4.1.9 Filter units for ventilation systems for crew and embarked personnel installations are to be provided with the following instrumentation and alarms:

  1. Indication of differential air pressure across the filter unit.

  2. High differential air pressure alarm.

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