42 Questions
Which of the following is true about equipment lookout?
It is a system of locks and tags that secure devices that prevent hazardous energy from release.
When is equipment lockout required?
When machinery or equipment is shut down for maintenance.
What are the conditions that must be met before maintenance work can be done?
All parts and attachments are secured against inadvertent movement, hazards are effectively controlled, and energy isolating devices are locked out.
Which valve should be closed to seal the water coolers?
1" upstream glycol supply valve
Which valve should be opened to drain the pump casing?
First 3/4 pump casing drain valve
Which valve should be opened to drain the pump discharge piping?
3/4" drain on pump discharge piping
Which of the following is a purpose of a group lockout procedure?
To isolate the source of danger from the worker
What is the purpose of lockout devices?
To keep workers from operating the equipment
What is a zero energy state?
When a machine is incapable of spontaneous or unexpected action
What is the purpose of proving the zero energy state?
To protect workers from unintentional movement or release of stored energy
According to the text, what is the purpose of de-energization and lockout?
To prevent the release of an energy source
What must be done before commencing work on locked out equipment?
Verify that all energy sources are effectively locked out
Who is responsible for removing a personal lock?
The worker who installed it
What must be done if a worker's personal lock cannot be removed by them?
The matter must be referred to the supervisor or manager in charge
Which of the following is a purpose of equipment lookout?
To secure devices that prevent hazardous energy release
What is considered hazardous energy?
Any energy source that could release or move and injure a worker
When is equipment lockout required?
When machinery or equipment is shut down for maintenance
Which lock is attached to the lockout box for safekeeping?
The designated operations lock key
What type of locks should be used for lockout?
Personal locks
What must be done before removing a personal lock?
Notify the worker
What is the purpose of de-energization and lockout?
To ensure worker safety
Which of the following is NOT a step in the basic lockout procedure for repacking a leaking pump?
Open the drain valves between the suction and discharge valves and the pump.
What is the purpose of a group lockout procedure?
To meet the requirements of a large number of energy isolating devices.
What is the purpose of lockout devices?
To isolate the source of danger from the worker.
What is the purpose of proving the zero energy state?
To protect workers from unintentional movement or release of stored energy.
Which valve should be closed to drain the pump suction piping?
3/4 outboard seal water cooler glycol outlet isolation valve
What should be done to seal the water coolers?
Close 1" upstream glycol supply valve
What is the purpose of the group lockout procedure?
To seal the water coolers
Which of the following devices should be secured by locks as part of the equipment lookout system?
Main disconnect switches
What is considered hazardous energy in the context of equipment lookout?
All of the above
When is equipment lockout required?
All of the above
Which valve should be closed to drain the pump discharge piping?
3/4 drain valve
What is a zero energy state?
A state where all energy sources are completely shut off
What is the purpose of lockout devices?
To prevent accidental energization of equipment
Which of the following is NOT a step in the basic lockout procedure for repacking a leaking pump?
Open the motor electrical breaker and lock it in the open position.
What must be done before removing a personal lock?
Confirm the electrical breaker lockout.
What should be done to seal the water coolers?
Close isolation valves for the gland seal water and lock them in the closed position.
Which valve should be opened to drain the pump discharge piping?
12" discharge block valve
Which of the following is NOT a requirement for personal locks used in lockout procedures?
Combination locks may be used for lockout.
What is the purpose of a lookout box?
To secure the keys from the locks used to complete the lockout.
Which of the following is a responsibility of each worker who works on machinery or equipment requiring lockout?
All of the above.
What is the purpose of de-energization and lockout?
To ensure the safety of all workers performing work on de-energized and locked out equipment, machinery, or process.
Study Notes
Equipment Lookout and Lockout Procedures in Safety Management Systems
- Equipment lookout is a system of locks and tags that secure devices to prevent hazardous energy release.
- Locks are used to secure control devices such as disconnect switches, circuit breakers, valves, and clutches.
- Hazardous energy includes electric, compressed gas, steam, hydraulic energy, moving parts, or elevated objects that could injure a worker.
- Equipment lockout is required during maintenance and no work can be done until all parts and attachments are secured, hazards are controlled, and energy isolating devices are locked out.
- A typical lockout station includes locks, tags that read "do not operate," and hasps for equipment or process lookout.
- Personal locks assigned to specific individuals are used for lockout, and combination locks should not be used.
- Shift or personnel changes require an orderly transfer of control of locked-out energy isolating devices.
- If personal locks are not practical, alternate lockout devices such as metal cable seals with unique identifiers can be used.
- De-energization and lockout are necessary to prevent the release of energy that could activate moving parts and cause injury.
- Energy isolating devices must not prevent access to adjacent devices.
- Effective means of verifying lookout, such as pushing a motor start button or opening bleed valves, must be provided and used.
- Each worker is responsible for locking out energy isolating devices, removing personal locks, and maintaining control of their keys.
Test your knowledge on group lookout procedures for worker safety in this quiz. Learn about the importance of following lockout procedures and how to effectively implement group lockout procedures in your workplace.
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