17 Questions
What is the primary reference source for locating sources of energy?
Up-to-date single-line drawings
What is the definition of tagout?
Installing a tagout device on all sources of hazardous energy, prohibiting operation of the disconnecting means
Under what circumstance is the use of tagout procedures without a lock permitted?
When the equipment design prevents the installation of a lock on an energy isolation device
What additional safety measure should be employed when tagout procedures are used without a lock?
Isolating circuit element removal, such as fuses, blocking of the controlling switch, or opening an extra disconnecting device
What should the procedure identify in the case of removing locks or tags when the installing individual is unavailable?
Details for removing locks or tags when the installing individual is unavailable
What should be conducted before electric circuits or equipment are re-energized?
Visual inspections to verify that all tools, mechanical restraints, and electrical jumpers have been removed
What should be ensured before circuits and equipment are ready to be energized?
All nonessential items have been removed and personnel are clear of exposure to dangerous conditions resulting from re-energizing the service
What should be identified in the procedure when the job or task requiring lockout/tagout is to be interrupted temporarily for testing or positioning of equipment?
The steps and qualified persons' responsibilities for returning to service after temporary interruption
What is the primary responsibility for employees working under group lockout or tagout devices?
Each employee must affix a personal lockout or tagout device when starting work
What is the definition of lockout?
Installing a lockout device on all sources of hazardous energy
What is necessary for complex lockout/tagout procedures?
A written plan of execution
Who is responsible for verifying that the lockout/tagout procedure is implemented and for ensuring task completion before removing locks/tags?
The person identified in the complex lockout/tagout procedure
What should be established in complex lockout/tagout procedures regarding jobs or tasks in progress?
Coordination methods for related jobs at remote locations
What must be done before touching or working on equipment with stored energy sources?
Properly managing the stored energy sources
What does tagout involve?
'Attaching a warning tag to the energy isolation device'
What is required to be identified in complex lockout/tagout procedures during shift changes?
'The method for transferring responsibility'
What is necessary before restarting equipment once the lockout/tagout procedure has been initiated?
'Verifying by testing the equipment operating controls'
Study Notes
- Complex lockout/tagout procedures are required for certain applications with multiple energy sources, multiple crews, multiple crafts, multiple locations, multiple employers, multiple disconnecting means, particular sequences, or jobs that continue for more than one work period.
- A written plan of execution is necessary for complex lockout/tagout procedures, identifying the person in charge.
- Primary responsibility for employees working under group lockout or tagout devices is vested in an authorized employee, and each authorized employee must affix a personal lockout or tagout device when starting work.
- Stored energy sources, such as capacitors and springs, must be properly managed before touching or working on associated equipment.
- The complex lockout/tagout procedure shall identify the person responsible for verifying that the lockout/tagout procedure is implemented and for ensuring task completion before removing locks/tags.
- Equipment cannot be restarted once the lockout/tagout procedure has been initiated, and this must be verified by testing the equipment operating controls.
- The procedure shall identify testing requirements, including the test instrument to be used, the person responsible for using it, the boundary of the electrically safe work condition, and the necessity of retesting.
- Grounding requirements for the circuit should be established, including the installation of temporary protective grounding equipment for the duration of the task.
- A method for transferring responsibility for lockout/tagout during shift changes must be identified in the procedure.
- The procedure shall establish coordination methods for jobs or tasks in progress, including related jobs or tasks at remote locations and the person responsible for coordination.
- A method for accounting for all persons who could be exposed to hazardous energy during the lockout/tagout must be identified in the procedure.
- Lockout is defined as installing a lockout device on all sources of hazardous energy, making operation of the disconnecting means impossible without forcible removal of the lock.
- Tagout is defined as attaching a warning tag to the energy isolation device and other energy-isolating equipment in the circuit, making the equipment clearly identifiable as being in a locked-out or tagged-out condition.
Test your knowledge of lockout/tagout procedures required by employers to maintain workplace safety. This quiz covers planning, including the requirements of locating sources and utilizing single-line drawings as a primary reference source.
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