Maintenance Safety Procedures Flashcards

A maintenance supervisor receives a near-miss report where a heavy part was nearly dropped on a worker below a mezzanine. The MOST important immediate corrective action is:

Answer: Establish a barricaded exclusion zone below elevated work areas and implement a tool tethering policy

Establishing an exclusion zone and tethering policy directly addresses the dropped-object hazard immediately, protecting workers while a long-term solution is developed.

Under OSHA's Hazard Communication Standard (HazCom 2012 / GHS), a chemical container found in the maintenance shop without a label must be:

Answer: Immediately tagged 'unknown chemical' and treated as hazardous until identified or disposed of properly

Unlabeled containers must be treated as hazardous; they cannot be used and must be identified or disposed of in accordance with HazCom and hazardous waste regulations.

Which of the following best describes the purpose of a machine guard interlocked with the power circuit?

Answer: To de-energize the machine automatically when the guard is opened or removed

An interlocked guard is wired so that opening or removing it breaks the power circuit, automatically stopping the machine and preventing access to moving parts while they are in motion.

A maintenance technician is about to enter a permit-required confined space when the atmospheric monitor alarms for low oxygen (18%). The correct action is:

Answer: Ventilate the space continuously and re-test; do not enter until oxygen is between 19.5% and 23.5%

OSHA defines an oxygen-deficient atmosphere as below 19.5%; the space must be ventilated and re-tested to confirm acceptable oxygen levels before any entry without supplied-air respiratory protection.

When a maintenance task requires use of a portable electric grinder, which safety check is critical before operation?

Answer: Performing a ring test on the abrasive wheel and verifying the wheel RPM rating exceeds the tool's maximum RPM

A ring test checks for cracks in the abrasive wheel (cracked wheels shatter at speed), and the wheel's maximum RPM must never be less than the tool's no-load RPM to prevent wheel failure.

The OSHA recordkeeping standard (29 CFR 1904) requires an employer to record a work-related injury on the OSHA 300 log when it results in:

Answer: Days away from work, restricted work, job transfer, medical treatment beyond first aid, loss of consciousness, or diagnosis of a significant injury

OSHA lists specific recording criteria: days away, restricted duty, job transfer, medical treatment beyond first aid, loss of consciousness, or a significant injury/illness diagnosed by a healthcare professional.

Which practice best demonstrates effective use of the pre-task safety meeting (tailgate/toolbox talk) before maintenance work?

Answer: Reviewing specific hazards for that day's task, verifying permits and PPE, and confirming each worker's understanding

Effective pre-task meetings are task-specific, interactive, and confirm that each team member understands the hazards and controls relevant to that day's work.