60 Questions
What is an employer responsible for in a lockout/tagout program?
Providing the necessary equipment for lockout/tagout procedures
What should a lockout/tagout program and procedures incorporate?
Applicability to the experience and training of the workers and conditions in the workplace
Who should be involved in the lockout/tagout procedure?
Each person who could be exposed directly or indirectly to a source of electrical energy
What is required for complex lockout/tagout procedures?
A written plan identifying the person in charge and vesting primary responsibility in an authorized employee
What must be established in a lockout/tagout procedure?
Testing requirements, including test instrument use and PPE requirements
Who is responsible for implementing and ensuring completion of the lockout/tagout procedure?
The person identified in the written plan
What must lockout and tagging of electrical sources ensure?
Compliance with applicable codes, standards, and regulations
When must energy isolation devices for machinery be capable of accepting a lockout device?
After January 2, 1990
What is a requirement for tagout devices?
Suitability for the environment and duration
What is tagout defined as in lockout/tagout procedures?
Installing a tagout device on hazardous energy sources to prohibit operation of disconnecting means
When is tagout without a lock allowed?
If equipment design prevents lock installation, with additional safety measures required
What must procedures detail regarding lockout/tagout devices?
How to remove lockout/tagout devices when the installer is unavailable and inform the installer before returning to work
When is the use of noncontact capacitive test instruments permitted for testing phase conductors on electrical systems over 1000 volts?
Never, noncontact capacitive test instruments are not permitted for testing phase conductors
What must be done before touching circuit conductors and parts in the presence of induced voltages or stored electrical energy?
Grounding of circuit conductors and parts
What is the purpose of temporary protective grounding equipment?
To prevent exposure to electric shock hazards
Lockout/tagout procedures only apply to fixed, permanently installed equipment, not temporarily installed or portable equipment
False
The employer is responsible for auditing the lockout/tagout program, but not the execution of the lockout/tagout procedures
False
Each person who could be exposed to a source of electrical energy shall be involved in the lockout/tagout procedure
True
Simple lockout/tagout procedures always require a written plan for each application.
False
Complex lockout/tagout procedures require a written plan identifying the person in charge and vest primary responsibility in an authorized employee.
True
Lockout/tagout procedures do not need to establish coordination with other jobs or tasks in progress.
False
Locks and tags should be installed on control devices like push-buttons or selector switches for electrical lockout/tagout procedures.
False
Energy isolation devices for machinery or equipment installed after January 2, 1990, are not required to be capable of accepting a lockout device.
False
Tagout devices must be suitable for the environment and duration, and capable of withstanding a specific force.
True
Tagout is defined as installing a tagout device on hazardous energy sources to prohibit operation of disconnecting means.
True
Tagout without a lock is allowed only if equipment design prevents lock installation, with additional safety measures required.
True
Procedures must detail how to remove lockout/tagout devices when the installer is unavailable and inform the installer before returning to work.
True
Clear identification of steps and responsibilities when a lockout/tagout task is temporarily interrupted for testing or positioning of equipment.
True
Use of noncontact capacitive test instruments permitted for testing each phase conductor on electrical systems over 1000 volts.
False
Grounding of circuit conductors and parts before touching them in the presence of induced voltages or stored electrical energy.
True
Lockout/tagout procedures always need to be performed in the order presented, if feasible.
False
It is acceptable to visually verify that all blades of the disconnecting devices are fully open or that drawout-type circuit breakers are withdrawn to the test or fully disconnected position.
True
It is not necessary to block or relieve stored nonelectrical energy in devices to the extent the circuit parts cannot be unintentionally energized by such devices.
False
It is acceptable to apply lockout/tagout devices in accordance with an undocumented and established procedure.
False
It is only necessary to test each phase conductor or circuit part at each point of work for the absence of voltage once.
False
It is not required to release stored electrical energy before beginning work on the equipment.
False
It is not necessary to determine that the test instrument is operating satisfactorily through verification on any known voltage source before and after each test.
False
An absence of voltage tester must be permanently mounted and installed in accordance with the manufacturer’s instructions to be used for testing for the absence of voltage at the work location.
True
Noncontact capacitive test instruments are permitted to be used on electrical systems over 1000 volts to test each phase conductor.
True
Temporary protective grounding equipment should be placed in a manner to prevent each employee from being exposed to an electric shock hazard.
True
Temporary protective grounding equipment is not required to be capable of conducting the maximum fault current that could flow at the point of grounding.
False
Temporary protective grounding equipment and connections are not required to have an impedance low enough to cause immediate operation of protective devices in case of unintentional energizing of the electric conductors or circuit parts.
False
Lockout/tagout procedures apply to fixed, permanently installed equipment as well as temporarily installed or portable equipment.
False
Tagout without a lock is allowed if equipment design prevents lock installation, with additional safety measures required.
True
Energy isolation devices for machinery or equipment installed after January 2, 1990, are required to be capable of accepting a lockout device.
False
When establishing and verifying an electrically safe work condition, what should be done after properly interrupting the load current?
Open the disconnecting device(s) for each source
What is the purpose of applying lockout/tagout devices in accordance with a documented and established procedure?
To prevent unintentional energization of circuit parts
What is required before and after testing each phase conductor or circuit part for the absence of voltage?
Determine that the test instrument is operating satisfactorily through verification on any known voltage source
What should be done to the stored nonelectrical energy in devices to the extent the circuit parts cannot be unintentionally energized?
Block or relieve it
What is the next step after determining all possible sources of electrical supply to the specific equipment?
Open the disconnecting device(s) for each source
What should be visually verified wherever possible during the process of establishing and verifying an electrically safe work condition?
All blades of the disconnecting devices are fully open
When is it necessary to use an adequately rated portable test instrument to test for the absence of voltage at each point of work?
Before and after each test
What is the purpose of temporary protective grounding equipment?
To prevent exposure to electric shock hazards
When is the use of noncontact capacitive test instruments permitted for testing phase conductors on electrical systems over 1000 volts?
On electrical systems over 1000 volts
What is required for complex lockout/tagout procedures?
A written plan identifying the person in charge
What must lockout and tagging of electrical sources ensure?
Protection against unintentional energization
What is a requirement for tagout devices?
Suitability for the environment and duration
What must procedures detail regarding lockout/tagout devices?
How to remove devices when the installer is unavailable
When is tagout without a lock allowed?
If equipment design prevents lock installation
What is an employer responsible for in a lockout/tagout program?
Implementing and ensuring completion of procedures
Study Notes
Lockout/Tagout and Electrically Safe Work Condition Procedures
- Tagout is defined as installing a tagout device on hazardous energy sources to prohibit operation of disconnecting means.
- If locks cannot be attached to existing disconnecting means, alternative means must be employed to ensure electrical safety.
- Tagout without a lock is allowed only if equipment design prevents lock installation, with additional safety measures required.
- Responsibilities and accountability for individuals exposed to electrical hazards during tagout procedures must be clearly established.
- Procedures must detail how to remove lockout/tagout devices when the installer is unavailable and inform the installer before returning to work.
- Steps to be taken upon completion of a task requiring lockout/tagout, including tests, inspections, and notification of responsible employees.
- Clear identification of steps and responsibilities when a lockout/tagout task is temporarily interrupted for testing or positioning of equipment.
- The process for establishing and verifying an electrically safe work condition, including steps to be performed in order.
- Use of portable test instruments to test for the absence of voltage at each point of work, or a permanently mounted absence of voltage tester.
- Use of noncontact capacitive test instruments permitted for testing each phase conductor on electrical systems over 1000 volts.
- Grounding of circuit conductors and parts before touching them in the presence of induced voltages or stored electrical energy.
- Placement and capacity requirements for temporary protective grounding equipment to prevent exposure to electric shock hazards.
Lockout/Tagout and Electrically Safe Work Condition Procedures
- Tagout is defined as installing a tagout device on hazardous energy sources to prohibit operation of disconnecting means.
- If locks cannot be attached to existing disconnecting means, alternative means must be employed to ensure electrical safety.
- Tagout without a lock is allowed only if equipment design prevents lock installation, with additional safety measures required.
- Responsibilities and accountability for individuals exposed to electrical hazards during tagout procedures must be clearly established.
- Procedures must detail how to remove lockout/tagout devices when the installer is unavailable and inform the installer before returning to work.
- Steps to be taken upon completion of a task requiring lockout/tagout, including tests, inspections, and notification of responsible employees.
- Clear identification of steps and responsibilities when a lockout/tagout task is temporarily interrupted for testing or positioning of equipment.
- The process for establishing and verifying an electrically safe work condition, including steps to be performed in order.
- Use of portable test instruments to test for the absence of voltage at each point of work, or a permanently mounted absence of voltage tester.
- Use of noncontact capacitive test instruments permitted for testing each phase conductor on electrical systems over 1000 volts.
- Grounding of circuit conductors and parts before touching them in the presence of induced voltages or stored electrical energy.
- Placement and capacity requirements for temporary protective grounding equipment to prevent exposure to electric shock hazards.
Test your knowledge of lockout/tagout and electrically safe work condition procedures with this quiz. Challenge yourself with questions on tagout, lockout alternatives, responsibilities, removal procedures, task completion, interruptions, establishing an electrically safe work condition, testing for absence of voltage, and grounding requirements.
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