Operation and maintenance of Marine Electrical plant
The safety procedures required when working with low and high voltage include; avoid working on ‘live’ equipment. It is crucial to isolate equipment prior to opening.
Secondly, it is recommended that one should always work with the help of another person who can assist in times of an emergency such as a shock. Thirdly, it is paramount to learn CPR methods and artificial respiration. Also, it is advisable that shore plug must be removed before checking for errors on the switchboard, that is, no source of power should be on the system (Payne 1998, p.231).
Additionally, it is critical to wear protective clothing such as insulated rubber boots and gloves. It is important to maintain dryness in case someone is working under high humidity, foggy or hot weather conditions. Last but not least, temporary wiring should be used for demolition, remodeling, maintenance and repair. On this note, temporary wiring for 15 or 20-amphere and 125-volt single-phase receptacles must consist of ground-fault circuit interrupters (Keller 2010, p. 307).
Description of EPTW and how it is used
EPTW is a permit to work that consists of a safety system that coordinates various work operations. It is a formal written system that controls specific forms of work that are recognized as potentially dangerous. It is a system that is implemented in high risk jobs, for instance, confines space entry, hot works, electrical isolation and carrying unsafe substances. The individuals responsible examine the work and scrutinize safety at each stage. Furthermore, permits are an effective way of communication between the plant supervisors, operators, personnel and site management. The workers performing the task sign the permit to indicate that they comprehend the dangers and safety measures necessary (Sadiku & Ali 2015, p. 1007).Description of electrical isolation and testing proceduresElectrical isolation is the mitigation of the movement of electricity from a substance to its environment. This is attained by covering the area of isolation with a poor conductor.
Also, electric isolation is the effective safeguarding of an area from external electromagnetic radiation. This is achieved by covering in a case the areas with a very good conductor that neutralizes the incoming electric fields. The process of isolating an electrical circuit entails making it dead to ensure that it cannot be re-energized accidentally. Isolators are locked off when working on electrical equipment. It is necessary to check whether the isolation switch is ‘locked off’ and labelled as well as make sure the circuit is dead before working or earthing an isolated circuit (Hughes & Ferrett 2010, p. 283-284).
There are various tests that are applied to test for isolation. For instance, passive insulation test. It is a test that measures the degree of resistance between the negative, hull and positive. It is important to set a multimeter on an ohms scale and carry out a test as follows:The first step is to …