29 CFR 1926.152: Flammable liquids
The official text is on the eCFR. This page maps how the section is organized, quotes the paragraphs our CHST practice questions are built on, and gives free questions you can try. Text below is quoted from the eCFR, current as of 2026-10-14; the section was last amended 2016-09-01.
How 29 CFR 1926.152 is organized
- (a) General requirements2 paragraphs
- (b) Indoor storage of flammable liquids22 paragraphs
- (c) Storage outside buildings8 paragraphs
- (d) Fire control for flammable liquid storage4 paragraphs
- (e) Dispensing liquids5 paragraphs
- (f) Handling liquids at point of final use3 paragraphs
- (g) Service and refueling areas12 paragraphs
- (h) Scope3 paragraphs
- (i)178 paragraphs
- (j) Piping, valves, and fittings—(1) General—(i) Design15 paragraphs
- (k) Marine service stations—(1) Dispensing12 paragraphs
Paragraphs our practice questions cite most
Counted across the 19 live PassCited questions built on this section. This reflects our question bank, not the real exam.
“(D) Atmospheric tanks shall not be used for the storage of a flammable liquid at a temperature at or above its boiling point.”
“(2) Flammable liquids shall not be stored in areas used for exits, stairways, or normally used for the safe passage of people.”
“(b) Indoor storage of flammable liquids. (1) No more than 25 gallons of flammable liquids shall be stored in a room outside of an approved storage cabinet. For storage of liquefied petroleum gas, see § 1926.153.”
“(3) Not more than 60 gallons of Category 1, 2 and/or 3 flammable liquids or 120 gallons of Category 4 flammable liquids shall be stored in any one storage cabinet. Not more than three such cabinets may be located in a single storage area. Quantities in excess of this shall be stored in an inside storage room.”
“(3) Flammable liquids shall be drawn from or transferred into vessels, containers, or tanks within a building or outside only through a closed piping system, from safety cans, by means of a device drawing through the top, or from a container, or portable tanks, by gravity or pump, through an approved self-closing valve. Transferring by means of air pressure on the container or portable tanks is prohibited.”
Free practice questions on 29 CFR 1926.152
Question 1
A site fuel truck is parked at a temporary fueling area to refill an excavator. The operator leaves the excavator idling to keep the cab heater running while the nozzle is in the tank. Which action does the standard require?
Show answer and source
Answer: D. Shut off the excavator's motor for the entire fueling operation
The standard requires the motors of all equipment being fueled to be shut off during fueling. A nearby extinguisher, fire watch, or bonding does not replace that requirement.
Answer D rests on
29 CFR 1926.152(g)(10)(opens ecfr.gov in a new tab)“The motors of all equipment being fueled shall be shut off during the fueling operation.”
Question 2
During an inspection of a temporary diesel (Category 4 flammable liquid) storage tank on a job site, you note the following about the vent piping: it terminates outdoors above the fill pipe opening and above the normal snow level, its outlet has a return bend with a coarse screen, and it enters the tank through the top. A horizontal run of the vent pipe has sagged between two supports, creating a low spot. Which condition is a deficiency that must be corrected?
Show answer and source
Answer: D. The sag in the horizontal run, because the pipe must drain toward the tank without sags or traps where liquid can collect
The standard requires vent pipes to be laid so they drain toward the tank without sags or traps in which liquid can collect, so the low spot must be fixed. The return bend and screen are expressly allowed to keep foreign material out, and the top entry and outlet above the fill pipe opening are what the standard requires.
Answer D rests on
29 CFR 1926.152(i)(3)(iv)(D)(opens ecfr.gov in a new tab)“Vent pipes shall be so laid as to drain toward the tank without sags or traps in which liquid can collect. They shall be located so that they will not be subjected to physical damage.”
Where it shows up in exam prep
Find out which regulations you'd miss
Other Part 1926 sections
This is a study aid, not legal advice or an official interpretation. Always check the current eCFR text. Original practice questions, not real exam items. PassCited is not affiliated with or endorsed by BCSP.