.emergency generator

.emcy generator    .egr

The requirement for emergency power onboard the ship is detailed in SOLAS chapter 2-1
SOLAS CH: II-1 / Part : D / Reg : 43 & 44

The emergency source of electrical power may be either a generator or an accumulator battery for essential services under emergency conditions.

Where the emergency source of electrical power is a generator, it shall be

§ Driven by a suitable prime mover with an independent supply of fuel having a flashpoint (closed cup test) of not less than 43°C

§ Emergency generator and emergency switchboard of the ship should be located above the uppermost continuous deck, away from machinery space, behind the collision bulkhead.
§ The main switchboard of the ship should not interfere with supply, control, and distribution of emergency power.
§ Emergency source of power should be capable of operating with a list of up to 22.5° and a trim of up to 10 °
§ Emergency generator should be capable of giving power for the period of 18 hours for the cargo ship and 36 hours for the passenger ship.
§ Emergency generator should start at 0°C and if temperature fall below this then there should be heating arrangement.
§ Emergency generator should come on load automatically within 45s after the failure of main power supply.
§ If the emergency generator fails to come on load the indication should be given to ECR.
§ Emergency generator should have two different starting arrangement
§ Primary may be the battery, should fully charge all time and capable of providing 3 consecutive Start.
§ Secondary may be pneumatic or hydraulic, capable of providing 3 consecutive starts within 30 min, and 1st start within 12 min.

§ In addition to emergency generator a transitional source of emergency electrical power should be provided,

→ The transitional source of emergency electrical power shall consist of an accumulator battery suitably located for use in an emergency. It shall operate without recharging while maintaining the voltage of the battery throughout the discharge period within 12% above or below its nominal voltage. The battery capacity should be sufficient . Capable of supplying power automatically to emergency lighting in the event of failure of either the main or emergency source of electrical power

→ Where the emergency source of electrical power is an accumulator battery, it shall be capable-

.1 carrying the emergency electrical load without recharging. It shall maintain it voltage 12% above or below its nominal voltage while discharging.

.2 it should also capable of automatically connecting to the emergency switchboard in the event of failure of the  main source of electrical power; and

.3 immediately supplying power to emergency lighting