Construction (29 CFR 1926)

Flammable Liquids (Construction)

Verified vs OSHA sources · 2026-10-05

29 CFR 1926.152

29 CFR 1926.152 governs flammable liquids on construction sites: they must be kept in approved safety cans or containers, storage quantities are limited, indoor storage and dispensing areas must be ventilated and free of ignition sources, and transfers must control static. It is the construction counterpart to general industry's 1910.106.

25 citations in construction (NAICS 23, federal, FY2025)

29 CFR 1926.152 at a glance

What it requires: Safe storage and handling of flammable liquids on construction sites
Approved containers: Only approved containers and portable tanks may be used for storage/handling
Room limit: ≤ 25 gallons of flammable liquids may be stored in a room outside an approved cabinet
Ignition control: Control ignition sources where flammable vapors may be present
Max penalty (2026): $16,550 per serious violation; $165,514 per willful
The #1 confusion: Fuel and solvents on a jobsite need approved safety cans, not any handy container

What 29 CFR 1926.152 requires (plain English)

29 CFR 1926.152 governs flammable liquids on construction sites: the gasoline, diesel, solvents, and other flammable liquids that power equipment and are used in finishing and cleaning. Construction sites are high-risk for flammable-liquid fires because fuels are handled in the open, near hot work and running engines, often stored in temporary conditions. The standard sets how these liquids must be contained, stored, and kept away from ignition sources.

Two container rules are central. First, only approved containers and portable tanks may be used for the storage and handling of flammable liquids, for small quantities, this means approved safety cans (or DOT-approved containers), not open buckets or improvised vessels. Second, no more than 25 gallons of flammable liquids may be stored in a room outside of an approved storage cabinet; quantities above that must be in an approved cabinet (which itself has quantity limits) or an approved storage room or building. These limits keep the amount of readily-ignitable fuel in any work area small.

Ignition-source control ties it together. In locations where flammable vapors may be present, precautions must be taken to prevent ignition by eliminating or controlling sources of ignition: open flames, smoking, cutting and welding, hot surfaces, and static electricity. Because construction routinely combines fuels with hot work, 1926.152 is closely linked to the hot-work/welding requirements: fuel storage and refueling must be separated from welding, cutting, and other ignition sources, and safety cans and proper bonding/grounding reduce the chance that a spill or a spark becomes a fire.

The regulatory text

“Only approved containers and portable tanks shall be used for storage and handling of flammable liquids. Approved safety cans or Department of Transportation approved containers shall be used for the handling and use of flammable liquids in quantities of 5 gallons or less...”

29 CFR 1926.152(a)(1)

Key facts about 29 CFR 1926.152

Only approved containers and portable tanks may be used for storage/handling of flammable liquids (1926.152(a)(1)).
Approved safety cans or DOT-approved containers are required for quantities of 5 gallons or less.
No more than 25 gallons of flammable liquids may be stored in a room outside an approved storage cabinet (1926.152(b)(1)).
Larger quantities require an approved storage cabinet, room, or building with specific construction requirements.
Ignition sources must be controlled where flammable vapors may be present (1926.152(i)).
Fuel storage and refueling must be kept separate from hot work (welding, cutting, grinding).
It parallels the general-industry flammable-liquids standard (1910.106) for construction conditions.

Scope: who 29 CFR 1926.152 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.152
Enforcement status: In force and enforced
Jurisdiction: Federal OSHA (29 State-Plan jurisdictions may be stricter)

State-Plan states (e.g. California, Washington, Michigan) operate OSHA-approved programs that must be at least as effective as federal OSHA and frequently impose higher penalties or additional requirements. Confirm the rule as adopted in your state.

Key requirements of 29 CFR 1926.152

#	Employer obligation
1	Store in approved containers and cabinets
2	Use only approved portable containers
3	Ground and bond during dispensing
4	Keep ignition sources away from storage
5	Limit quantities per fire code

Summarized from the text of 29 CFR 1926.152. Always read the full regulation for the binding language.

Common Flammable Liquids (Construction) violations

Deficiencies OSHA cites under 29 CFR 1926.152 include the ones below, in no particular order. Distinct deficiencies can be cited as separate items, and each serious item carries up to $16,550 (2026). Broader per-instance stacking exists but is a discretionary, case-by-case OSHA enforcement policy, not an automatic multiplier.

Flammable liquids stored/handled in unapproved containers (not safety cans): 1926.152(a)(1).
More than 25 gallons stored in a room outside an approved storage cabinet (1926.152(b)(1)).
Ignition sources not controlled where flammable vapors may be present (1926.152(i)).
Fuel storage or refueling too close to hot work or running engines.
Storage cabinets/rooms not meeting the required construction and quantity limits (1926.152(b)).

Not just any container: an approved safety can

The most common jobsite flammable-liquid violation is using the wrong container. 1926.152 requires that only APPROVED containers and portable tanks be used, and for quantities of 5 gallons or less, an approved SAFETY CAN (or DOT-approved container). A safety can is not an ordinary metal or plastic can: it has a spring-closing lid and spout cover designed to relieve internal pressure safely and prevent the contents from spilling or the vapor from escaping and igniting. Storing gasoline in an open bucket, a water jug, or a non-approved container is both a violation and a real fire and explosion risk. The other frequent gap is quantity: no more than 25 gallons of flammable liquids may sit in a room outside an approved cabinet; beyond that, it must be in an approved cabinet or storage room.

What OSHA inspectors look for

A compliance officer checks that fuels and solvents are in approved safety cans, that storage quantities and locations meet the limits, that dispensing areas are ventilated with no smoking or ignition sources, and that bonding and grounding are used. Gasoline in unapproved containers is a frequent jobsite finding.

Example: how a violation is cited

A crew stores gasoline for equipment in open plastic jugs near a work area with hot work nearby. OSHA cites 1926.152 for using unapproved containers and failing to control ignition sources: a common construction fire hazard, with penalties from $16,550.

Illustrative example, not a specific OSHA case.

Flammable Liquids (Construction) compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.152. Each item is a key requirement OSHA may verify during an inspection.

Use only approved containers and portable tanks; use approved safety cans for 5 gallons or less.
Keep no more than 25 gallons of flammable liquids in a room outside an approved cabinet.
Store larger quantities in approved cabinets, rooms, or buildings meeting the construction requirements.
Control ignition sources (flames, smoking, hot work, hot surfaces, static) near flammable vapors.
Separate fuel storage and refueling from welding, cutting, and other hot work.
Bond and ground containers during transfer and keep proper fire extinguishers nearby.

2026 penalties for 29 CFR 1926.152

Maximums set by 29 CFR 1903.15(d). 2026 amounts unchanged from 2025 (no CPI adjustment; OMB M-26-11). Not an increase. The 2025 OSHA penalty levels remain in effect for 2026; OSHA made no inflation adjustment for 2026. 29 CFR 1903.15 identifies January 15, 2025 as the effective reference for these amounts, while OSHA's public penalties page currently references penalties assessed after Jan. 15, 2026.

Violation type	Minimum	Maximum	When it applies
Serious	$1,085	$16,550	Substantial probability of death or serious physical harm.
Other-Than-Serious	$0	$16,550	Relates to safety/health but unlikely to cause death or serious harm.
Willful	$11,823	$165,514	Intentional, knowing, or voluntary disregard of the requirement.
Repeated	$4,256	$165,514	A substantially similar violation cited within the last 5 years.
Failure to Abate	None	$16,550/day	up to $16,550 per day; total capped at 30x the daily amount (FOM Ch.6)

Flammable-liquid citations are common on active construction sites. Serious violations reach $16,550 and willful or repeat violations $165,514; unapproved containers and ignition-source proximity are the usual findings.

Maximums and the willful minimum are set by 29 CFR 1903.15(d); the serious and repeated minimums are OSHA policy floors from its annual penalty adjustment memo. OSHA applies gravity-based and size, good-faith and history reductions (FOM CPL 02-00-164 Ch.6). Estimates only, not legal advice.

The business case for Flammable Liquids (Construction) compliance

Construction sites run on fuels and solvents, often near torches, grinders, and generators. Keeping flammables in approved cans, limiting quantities, and separating them from ignition sources prevents the flash fires and explosions that injure crews and destroy work.

Free compliance tools for 29 CFR 1926.152

Hot Work Permit Generator Chemical Inventory Template

Flammable Liquids (Construction) penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.152.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.152

What containers can be used for flammable liquids on a construction site?

Only approved containers and portable tanks. Under 1926.152(a)(1), the storage and handling of flammable liquids requires approved equipment, and for quantities of 5 gallons or less an approved safety can or a DOT-approved container must be used. A safety can has a self-closing lid and spout designed to relieve pressure and prevent spills and vapor escape. Ordinary buckets, jugs, or non-approved cans are not permitted.

How much flammable liquid can be stored in a room on a jobsite?

Under 1926.152(b)(1), no more than 25 gallons of flammable liquids may be stored in a room outside of an approved storage cabinet. Quantities above 25 gallons must be kept in an approved storage cabinet (which has its own limits), an approved inside storage room, or a separate storage building meeting the standard's construction requirements.

What is an approved safety can?

An approved safety can is a container (of not more than 5 gallons capacity) with a spring-closing lid and spout cover, designed to safely relieve internal pressure when exposed to fire and to prevent the contents from spilling and the vapors from escaping. Using safety cans instead of open or non-approved containers greatly reduces the risk that a spill or a nearby spark becomes a flash fire, which is why they are required for handling small quantities of flammable liquids.

Why must fuel be kept away from welding and cutting?

Because hot work is a powerful ignition source and flammable liquids give off ignitable vapors. Welding, cutting, and grinding produce sparks, hot slag, and flame that can travel and ignite flammable vapors from nearby fuel or solvent containers, causing a flash fire or explosion. 1926.152 requires controlling ignition sources where flammable vapors may be present, so fuel storage and refueling must be separated from hot work, and the hot-work rules require clearing or shielding combustibles before work begins.

Regulatory history of 29 CFR 1926.152

1926.152 is part of Subpart F (Fire Protection and Prevention) of OSHA's construction standards, adapting the flammable-liquids requirements of NFPA 30 and the general-industry standard (1910.106) to the temporary, open, and ignition-source-rich conditions of construction sites.

Related glossary terms

Key terms that appear in 29 CFR 1926.152, each with a full plain-English explainer.

Flammable Liquid Flash Point Combustible Liquid Hot Work Permit

Related guides & articles

OSHA Top 10 Most-Cited Violations 2026

Related OSHA standards

29 CFR 1910.101

Compressed Gases

29 CFR 1910.106

Flammable Liquids

29 CFR 1910.107

Spray Finishing

29 CFR 1910.109

Explosives & Blasting

Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-05 against eCFR, OSHA.gov, and the Federal Register).

This page is an educational summary, not legal advice. OSHA standards and penalty amounts change; confirm requirements against the current regulation and your applicable State-Plan before acting.

Get the Binder in Order Before the Inspector Arrives. Are You Ready?

OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.

Serious Violation

$16,550

per violation (max)

HazComFast Pro

$199/mo

10 jobsites, unlimited chemicals, unlimited workers

Use the free tools View Pricing

New sign-ups are paused. The free tools below need no account, and customers can log in as usual.

Your account keeps working as usual. Cancel anytime.