Much of the work performed by Electrotechnical Officers (E.T.O.) involves the repair and maintenance of electrical equipment and systems. To maintain such systems at peak performan... Read more
The fuse is a piece of wire which can carry a stated current; if the current rises above this value it will melt. If the fuse melts (blows) then there is an open circuit and no cur... Read more
Power factor is the ratio of the true power (voltamperes) to apparent power (watts), and it depends on the phase difference between current and voltage. Three-phase power factor me... Read more
To successfully carry out the various test procedures suggested in this manual, certain test instruments are essential. The following lists detail the basic requirements in this re... Read more
Short circuit calculations are done to ensure that fault current in short circuits does not exceed breaker’s and other equipment’s maximum ratings. Under short circuit, the mechani... Read more
Staff on an up-bound tanker in a river waterway decided to anchor the vessel just below the lock to wait for traffic ahead to clear. While it was anchoring the vessel lost propulsi... Read more
An engine room crew Electrician (ETO) was investigating problems with the fuel oil circulating pump at the circuit breaker board. The pump’s breaker was opened and he proceeded to... Read more
Ship Load Analysis Load analysis of the ship’s electrical systems is a complex exercise and covers all operating conditions of the vessel, such as conditions in normal sea-going, c... Read more
High Voltage safety procedure on Ship Electrical System This is only a proposal how the procedure could look like, procedure must be established by the owner. It is extremely impor... Read more
High Voltage work procedure Ballast Pump/DOL High Duty Compressors This is only a proposal how the procedure could look like, procedure must be established by the owner. It is extr... Read more
