Operation
In cooling water systems, control is
performed by measuring and monitoring cooling water levels, temperature,
pressures and water flow. This can be done by on-site monitoring of water level
gauges, temperature pressure gauges and monitoring of water flow through
control goggles (if provided and installed). In some cases, the readings for
these parameters are displayed in remote monitoring tools such as CMS Control
Monitoring System or IAS Integrated Automation System windows.
In a high-temperature circuit cooling
system, an alarm may be provided between the deaerator and the expansion tank
to activate the alarm if excess air or gas is discharged through it. This alarm
indicates a fault in the main engine, such as a cracked cylinder sleeve.
In a low temperature circuit cooling
system, a cooling water monitoring unit and its bypass can be installed after
the diesel fuel coolers. This monitoring unit is designed to detect traces of
fuel in the cooling water and trigger an alarm when detected.