Electrical Safety and LOTO Flashcards
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Read the first 7 Electrical Safety and LOTO flashcards as text
Under OSHA 29 CFR 1910.147, which employees are authorized to perform lockout/tagout procedures?
Answer: Employees who have been trained and designated by the employer
OSHA 1910.147 requires that only employees who have been trained and formally designated as authorized employees may perform LOTO procedures.
What is the primary hazard addressed by the OSHA Lockout/Tagout standard (29 CFR 1910.147)?
Answer: Unexpected energization or startup of machinery
The LOTO standard specifically targets unexpected energization, startup, or release of stored energy during servicing and maintenance.
A tagout device used in place of a lockout device must meet which additional requirement?
Answer: Additional safety measures equivalent to the protection of a lock must be implemented
When tagout is used instead of lockout, employers must demonstrate that tagging provides the same level of protection, which often requires additional measures.
What does 'stored energy' include in the context of LOTO procedures?
Answer: Electrical, hydraulic, pneumatic, mechanical, thermal, and gravitational energy
Stored energy encompasses all energy forms including electrical, hydraulic, pneumatic, mechanical (springs), thermal, and gravitational (suspended parts).
How often must an employer conduct an inspection of energy control procedures under 29 CFR 1910.147?
Answer: At least annually
OSHA requires a periodic inspection of the energy control procedure at least annually to ensure the procedure and employees' knowledge remain adequate.
In a complex LOTO situation involving multiple energy sources, what is the correct sequence after isolating all energy sources?
Answer: Verify de-energization, then apply locks and tags
After isolation, the correct sequence is to verify that the equipment is de-energized (e.g., by attempting to start it) before applying lockout/tagout devices — but verification comes first.
Which of the following situations is specifically EXCLUDED from the OSHA LOTO standard?
Answer: Cord-and-plug connected equipment where the plug is within sight and control of the authorized employee
Cord-and-plug connected equipment is exempt from 1910.147 when the plug remains under the exclusive control of the employee performing the work.