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ASP question for October 18, 2026

The ASP question of the day for Sunday, October 18, 2026, on construction fire protection and prevention. Pick an answer to see the explanation and its source.

ASP Domain 4: Fire Prevention and Protection

A crew is decanting flammable solvent from drums into smaller containers inside an enclosed room of a building under construction. The room's temporary power has been shut off, so the supervisor hands out inexpensive hardware-store battery-powered work lights for the task. Which action is required before the work continues?

Show answer and source

Answer: B. Replace them with portable battery-powered lights of a type approved for hazardous locations

OSHA's construction fire prevention rule, 29 CFR 1926.151(a)(4), requires portable battery-powered lighting used while storing, handling, or using flammable liquids or gases to be a type approved for hazardous locations. The rule names battery units, so shutting off power does not exempt them. Switching lights on outside the room or adding wire guards does not make an ordinary light approved.

On the job

An EHS manager inspects a paint storage and mixing room on a building project where flammable liquids are handled. Workers are carrying ordinary battery-powered work lights, and the manager points out that the rule covers battery units, so a lack of wiring is no exemption. The manager has the lights removed and supplies portable battery-powered lights of a type approved for hazardous locations before the work continues.

Study aid, not site-specific safety advice. The official rule controls.

Answer B rests on

29 CFR 1926.151(a)(4)(opens ecfr.gov in a new tab)
“Portable battery powered lighting equipment, used in connection with the storage, handling, or use of flammable gases or liquids, shall be of the type approved for the hazardous locations.”

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