This guide is crucial in ensuring the proper functioning and maintenance
of the emergency generator system onboard..
SOLAS regulation requires the emergency power system to be tested under conditions simulating an actual blackout scenario.
The Sequential Test Selector uses different logic and can bypass the actual circuits, relays, and Printed Circuit Boards (PCBs) that would be used during a real blackout.
If these components are not properly tested, which can undermine the integrity of routine maintenance and fail to demonstrate compliance with SOLAS operational requirements.
“Sequential test” selector and/or “Routine Test Switch” (RTS) should be designed and wired to use the actual circuit paths to meet the requirements of SOLAS.
“Sequential test” selector and/or “Routine Test Switch” (RTS), may not meet the requirements of SOLAS Chapter II-1 Reg. 42.5.4 / 43.5.4 if it sends a signal to disconnect the
inter-connector instead of automatically disconnecting on loss of main source of power.
‘Controlled blackout’ may be accomplished to ensure the circuit path in good condition by opening MCR bus-tie (aka transfer line) circuit breaker, while the switch is in normal
mode, and operation switches are in auto such as to be in a sea-going state. But such test (controlled backout) must be conducted after getting permit from office.
