Fleet Electrical Safety Rules Test -electrical Operator

Isolation refers to the physical separation from all sources of supply and the application of safety locks and caution notices to prevent electrical equipment from being accidentally energized. This ensures that the equipment is completely disconnected and cannot be mistakenly activated, providing a safe working environment for maintenance and repair tasks.

Work on electrical equipment operating on a nominal 24 V installed in a non-hazardous area can be performed by both an Electrical Operator and an Electrical Person LV and MV. This means that both an Electrical Operator and an Electrical Person LV and MV have the necessary skills and qualifications to work on electrical equipment operating at 24 V in a non-hazardous area.

The correct answer is "Should be selected from the list approved by the managing office (OTS/332)." This means that the electrical test equipment used on STASCO managed vessels should be chosen from a specific list that has been approved by the managing office. This ensures that the equipment meets the necessary standards and requirements for use on the vessels.

Two pole voltage detectors are better than digital multimeters because they are comparatively safe, with no connection errors and no danger of arching due to their two-handed operation. This means that they provide a higher level of safety when working with electricity. Additionally, they are easy to use and are cheap and easy to find, making them a convenient option for voltage detection.

The size of an electric shock current is related to both the applied voltage and the body resistance. The applied voltage determines the potential difference across the body, while the body resistance determines the flow of current through the body. Therefore, both factors play a role in determining the size of the electric shock current.

All the answers provided are correct because electrical equipment can ignite a flammable atmosphere through sparks from opening and closing contacts and loose connections, as well as through high surface temperature. Both of these scenarios can create a source of ignition that can potentially ignite the flammable atmosphere.

EPTW stands for Electrical Permit to Work, which is a safety procedure used to ensure that electrical work is carried out safely. In this case, the question is asking where EPTW is not required for replacing lamps in luminaries. The correct answer is "Engine room and accommodation places" because these areas do not require an EPTW for replacing lamps in luminaries.

When using test equipment in a hazardous area, it is important to use type-approved fuses and batteries. This ensures that the equipment is designed to safely operate in the specific hazardous environment and reduces the risk of accidents or malfunctions. Additionally, it is advised not to carry spare batteries and open the equipment at the workplace to prevent any potential hazards or dangers.

Opening live electrical panels can be extremely dangerous and can result in electrocution or other serious injuries. Therefore, only individuals who are qualified and trained in electrical work should be allowed to open live electrical panels. Additionally, wearing appropriate personal protective equipment (PPE) such as insulated gloves and goggles is crucial to minimize the risk of injury.

The correct answer is to use the type approved matting provided by STASCO as part of the electrical safety kit on each ship. This implies that the company has already selected and approved specific mats that meet the necessary safety standards for working with low voltage electrical equipment. Therefore, it is recommended to use these mats rather than any other type or size of non-conducting mats. Additionally, the statement mentions that non-conducting mats are not necessary for "Live" work, further emphasizing the importance of using the approved matting provided by STASCO.

The correct answer is "Motor room with supply fans located outside of the dangerous zones." This area is not considered hazardous because the supply fans are located outside of the dangerous zones, meaning they are not in close proximity to any potential hazards such as cargo tanks, piping, relief valves, or vents.

Portable electrical tools are not suitable for use in hazardous areas because they can pose a risk of igniting flammable substances or causing explosions. Hazardous areas typically have a higher concentration of flammable gases, vapors, or dust, and using electrical tools in such areas can create a potential source of ignition. Therefore, it is important to use specially designed tools that are intrinsically safe and approved for use in hazardous environments.

Arching faults are most likely to occur during circuit breaker removal or insertion and during switching operations because these actions involve the interruption of electrical current flow. When a circuit breaker is removed or inserted, there is a possibility of arcing due to the high voltage and current levels involved. Similarly, during switching operations, there can be arcing due to the sudden change in electrical load. These arcing faults can cause damage to the circuitry and pose a safety risk.

Risk assessments are carried out in order to meet a legal requirement under the Health and Safety Regulations and to identify the extent of hazards in the workplace and put control measures in place to reduce or eliminate the hazard. By conducting risk assessments, organizations ensure compliance with legal regulations and create a safe working environment by identifying potential hazards and implementing measures to mitigate them. This helps protect the health and safety of employees and reduces the risk of accidents or injuries in the workplace.

The given answer is correct because it states that the Electrical Safety Rules and Procedures (ESR) apply only to electrical persons and not to shore contractors working on electrical equipment aboard the vessel. This means that the rules do not apply to individuals who are not specifically trained or qualified in electrical work, such as shore contractors.

Portable electrical equipment refers to any appliance that can be hand-held or moved while connected to an electricity supply through a lead and plug. This definition includes devices that are battery-powered and carried on a person for personal use, as well as equipment connected to a ship's electrical power system via a cable and plug. Therefore, the correct answer is that any appliance that is hand-held or can be moved while connected to an electricity supply via a lead and plug is considered portable.

Both an Electrical Person and an Electrical Operator may perform the task of starting or stopping an electric generator set from a remote control station. This suggests that both individuals have the necessary knowledge and skills to operate the generator set from a remote location.

The correct answer suggests that the fast and accurate assessment of Life & Rescue Boat battery condition can be done with the help of a STASCO approved Battery tester 12V. This implies that using this specific battery tester is the most effective and reliable method for assessing the battery condition, as it has been approved by STASCO, indicating that it meets the necessary standards and requirements for accurate testing.

The correct answer is "Ship’s Bosun is generally asked to inspect portable electrical equipment." This statement is not correct because the inspection of portable electrical equipment is usually carried out by a qualified electrician or a designated competent person, not the ship's Bosun. The Bosun's responsibilities typically include maintenance and repair of the ship's equipment and supervising the deck crew.

To make yourself less conductive while working on a live panel, it is important to wear safety shoes and use a company-approved rubber mat. Safety shoes are designed to provide insulation and protect against electrical shocks. The rubber mat acts as an additional layer of insulation, reducing the risk of electrical conductivity. By combining these two safety measures, you can minimize the chances of electrical accidents and ensure a safer working environment.

An emergency generator is typically used as a backup power source in case of a power outage. The steering gear and alarm system are critical components for the safe operation of a vessel, and they require a continuous power supply. Therefore, it is likely that these electrical services would be supplied from an emergency generator to ensure their uninterrupted operation.

When faced with operating unknown mechanical equipment, it is important to seek advice from a superior before attempting to operate it. This is because operating unfamiliar machinery without proper knowledge or guidance can be dangerous and potentially result in accidents or damage. Seeking advice from a superior ensures that you have the necessary information and guidance to operate the equipment safely and effectively. Reading the manual and reporting to the head of your department are also important steps, but seeking advice from a superior should be the first course of action.

Standing on a metal deck or near a metal structure can make a person less conductive while working on a live panel. This is because metal is a good conductor of electricity, so standing on or near it can help to dissipate any electrical charge and reduce the risk of electric shock. Wet deck and perspiration can also help to make a person less conductive as moisture can provide a path for the electrical current to flow through, rather than through the person's body. Therefore, options A, B, and C are all correct ways to make oneself less conductive while working on a live panel.

The best way of testing the "stand-by" function of the emergency diesel alternator is by switching on the "test run" button on the emergency diesel switchboard. This allows for a controlled and controlled test of the emergency diesel alternator without causing a total black-out on the ship or switching off the emergency switch board supply breaker on the main switch board.

Being intrinsically safe means that a product or wiring system is designed in such a way that it cannot produce enough energy to ignite a gas and cause an explosion. This ensures that even in potentially hazardous environments, the product or wiring system will not pose a risk of causing an explosion.

EX-p refers to equipment that is designed to maintain a small internal overpressure, which prevents the entry of a gas/air explosive mixture or flammable substance. This means that the equipment is specifically designed to prevent the occurrence of explosions or fires by keeping the internal pressure higher than the external environment. This ensures that any potential explosive or flammable substances are contained within the equipment and do not pose a risk to the surrounding area.

Zone 0 is considered a hazardous area because it is an area where an explosive gas/air mixture is continuously present or present for long periods. This means that there is a high risk of an explosion occurring in this zone. It is important to take appropriate safety measures and precautions in Zone 0 to prevent accidents and ensure the safety of individuals working in or around this area.

Insulation and vibration testing are part of condition monitoring. Condition monitoring involves regularly monitoring the condition of equipment or systems to detect any potential issues or failures. Insulation testing is done to ensure that the insulation material is functioning properly and preventing electrical leakage. Vibration testing is conducted to identify any abnormal vibrations that could indicate mechanical faults or wear and tear. By performing these tests as part of condition monitoring, any potential problems can be identified early on and appropriate maintenance or repairs can be scheduled to prevent further damage or breakdowns.

Using a faulty 110V ac power tool in a damp environment can be most harmful because it involves a higher voltage and the presence of moisture increases the conductivity of the electricity. This combination can lead to a higher risk of electric shock or electrocution.

The correct answer is radioactive material. Smoke detectors that use ion chambers contain a small amount of radioactive material, typically Americium-241. This radioactive material is used to ionize the air in the chamber, allowing the detector to sense smoke particles. Crushing or burning the smoke detector could release the radioactive material, posing a health and environmental hazard. Therefore, proper disposal methods should be followed to ensure the safe handling of the radioactive material.

Arc Flash energy is generally much higher close to the source of power generation. This is because the energy is concentrated and has not yet dissipated as it travels further away. As the energy travels through the electrical system, it can lose intensity, making it less dangerous. Therefore, being close to the source of power generation puts individuals at a higher risk of experiencing a more intense and dangerous arc flash event.

Ex d is a type of protection that is specifically designed to prevent ignition from spreading outside of the enclosure. This means that if there is an ignition event within the enclosure, such as a spark or flame, the design of the Ex d protection will ensure that it does not propagate to the surrounding environment. This is achieved through various measures, such as the use of flameproof enclosures and sealing techniques, to contain any potential ignition sources within the enclosure and prevent them from causing a larger fire or explosion.

Live working on medium voltage systems is strictly forbidden in all circumstances. This means that under no circumstances should work be carried out on medium voltage systems while they are live. This is because working on live systems poses a significant risk to the safety of the workers involved. It is important to de-energize the system and follow proper safety procedures before conducting any maintenance or repairs on medium voltage systems.

Infrared Thermography inspection (IRT) is a technique that uses infrared cameras to detect and measure the thermal patterns emitted by objects. It is commonly used to identify issues such as high electrical resistance, high loading, energised ground cables, open circuits, and short circuits. However, it is not effective in detecting dynamic unbalance of a rotating machine. This is because dynamic unbalance refers to an uneven distribution of mass within a rotating object, causing it to vibrate. Since IRT focuses on thermal patterns, it cannot directly detect or measure the mechanical imbalance of a rotating machine.

The insulation resistance value of a machine falls at high temperature because high temperatures can cause the insulation material to degrade and become less effective. This can lead to a decrease in the resistance of the insulation, which in turn affects the overall insulation resistance value of the machine.

A voltage not exceeding 1kVAC is considered as Medium Voltage (MV). This is because medium voltage typically ranges from 1kV to 35kV. Voltages below 1kV are generally classified as low voltage (LV), while voltages above 35kV are classified as high voltage (HV). Therefore, a voltage not exceeding 1kVAC falls within the range of medium voltage.

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The correct answer states that infrared thermography inspection can only be carried out by approved contractors, specifically Yellotec. This implies that there are certain qualifications or certifications required to perform this type of inspection, and only those who have been approved by Yellotec are authorized to do so. This ensures that the inspection is conducted by professionals who have the necessary knowledge and expertise in using IRT cameras and following proper safety protocols, as indicated by the requirement to wear proper PPE.

Voltages over 440V are especially dangerous because they can cause severe electric shock, burns, and even death. This is because higher voltages have more energy and can overcome the body's resistance, leading to more severe injuries. It is important to handle and work with high voltages with extreme caution and follow proper safety procedures to prevent accidents and injuries.

A risk assessment is a process of identifying and evaluating potential hazards and risks associated with a task or activity. While it is important to conduct a risk assessment before performing any electrical work, it is not always necessary to document the assessment for simple tasks like changing a light fitting. This is because the level of risk involved in such tasks is generally low and well-known, and the necessary precautions can be taken without the need for formal documentation. However, it is still important to assess and manage risks even for simple tasks to ensure safety.