Safety and Relief Valves

According to the workbook, what is the duty of every employee regarding safety at work?

• To avoid all activities that might impact safety

• To take reasonable care for the health and safety of himself and others affected by his acts or omissions

• To report only major accidents to an instructor

• To follow instructions only when convenient

What is the primary objective in operating and maintaining nuclear stations as mentioned in the workbook?

• To enhance the efficiency of energy production

• To prevent any event that could lead to an uncontrolled radiological release

• To reduce the cost of nuclear energy

• To increase the number of nuclear stations globally

What does a conservative approach in nuclear safety emphasize according to the workbook?

• Making rapid decisions to stay ahead of competitors

• Making high quality, safe decisions when faced with uncertain conditions

• Focusing solely on technological advancements

• Decreasing the workforce to minimize human error

What is the primary function of safety or relief valves in a plant?

• To increase pressure within the plant

• To monitor temperature changes

• To release excess pressure and prevent overpressure

• To control the flow of liquids only

Which type of valve is characterized by rapid opening or pop action?

• Control valve

• Safety valve

• Gate valve

• Globe valve

Relief valves are most commonly used in which type of systems?

• Solid handling systems

• Liquid systems

• Gas systems

• Electrical systems

Which of the following is NOT a situation that typically involves the use of safety valves?

• Transient pressure surges

• Regular maintenance checks

• Exposure to plant fires

• Heat exchanger tube failure

What is the main difference between a relief valve and a safety valve in terms of their operation under pressure?

• A) A relief valve opens fully immediately, while a safety valve opens gradually as pressure increases.

• B) A safety valve opens fully immediately, while a relief valve opens gradually as pressure increases.

• C) Both valves open gradually as pressure increases.

• D) Both valves open fully immediately when a certain pressure is reached.

What type of fluids are relief valves typically used for?

• A) Incompressible fluids such as water or oil.

• B) Compressible fluids such as steam or gases.

• C) Only solid materials.

• D) Only non-corrosive liquids.

What additional feature is generally fitted to standard safety valves to ensure operational readiness?

• A) A digital sensor to monitor pressure.

• B) An easing lever to manually lift the valve.

• C) An automatic reset function.

• D) A hydraulic release mechanism.