Safety Answers

Straight answers to the OSHA and Cal/OSHA questions we get asked most

Every answer here cites the standard it comes from, and every citation was checked against the standard text rather than recalled. Where a rule is widely misunderstood, we say so and explain which half people usually have right. Twenty plus years running contractor safety programmes on live job sites is behind this. Call 949-954-6581.

Trigger heights, and the number that catches people out

Does fall protection start at 6 feet?

In construction, yes: 29 CFR 1926.501(b)(1). That is the number most people carry, and they apply it everywhere.

In general industry it is 4 feet, under 29 CFR 1910.28(b)(1)(i). Each employee on a walking-working surface with an unprotected side or edge 4 feet or more above a lower level has to be protected. Hangar work, plant maintenance, warehouse mezzanines and loading racks are all general industry and all sit on the lower trigger. Two other construction-specific numbers get misapplied the same way: scaffolds at 10 feet under 1926.451, steel erection at 15 feet under 1926.760.

Which standard sets the 5,000 pound anchorage requirement?

Right number, wrong standard, depending where you are. In construction it is 29 CFR 1926.502(d)(15). In general industry it is 29 CFR 1910.140(c)(13)(i): capable of supporting at least 5,000 pounds for each employee attached, or under (c)(13)(ii) designed, installed and used under the supervision of a qualified person as part of a complete system maintaining a safety factor of at least two.

Worth getting right. If you are writing a general industry programme and citing the construction standard, an inspector will notice.

Railcars, tankers and rolling stock

Is fall protection required on top of a railcar or tank car?

This is half-right almost everywhere it is discussed.

OSHA has held since a 1996 enforcement memorandum that it will not cite falls from the tops of open rolling stock under the Subpart D walking-working surfaces standards. That is where the belief that railcar tops are exempt comes from, and as far as it goes it is true.

It does not go far. The same memorandum leaves two routes open. The PPE standard at 29 CFR 1910.132(d) applies where employees work atop stock positioned inside of or contiguous to a building or other structure and fall protection is feasible. And Section 5(a)(1) of the OSH Act, the General Duty Clause, applies wherever feasible means exist to eliminate or materially reduce a recognised hazard.

The word carrying the weight in both is feasible. The leniency was never a finding that tank tops are safe. It reflected that there is often nothing practical to tie off to on an open track. The memorandum also singles out adverse weather as where the General Duty Clause bites hardest, so an infeasibility assessment has to hold in February and not just in June. Note that this is a federal interpretation rather than a standard, and state-plan states run their own enforcement posture. See railcar and tanker loading fall protection.

We tie off. Is that enough?

Arrest is half a system. A worker arrested off the side of a tank car is suspended over a hard yard and on a clock, and suspension trauma does not wait for the fire service to arrive and set up.

The question to ask is: who retrieves him, with what, and how long from the moment he stops falling? If the answer is call 911, the rescue plan exists on paper and not in the yard.

Roof hatches and openings

Is a chain across the hatch opening acceptable?

No, and it is one of the most common site conditions there is.

A roof hatch is a hole in a walking-working surface. In general industry, 29 CFR 1910.28(b)(3) requires employees to be protected from falling through any hole 4 feet or more above a lower level by covers, guardrail systems, travel restraint or personal fall arrest.

The part that gets missed is 29 CFR 1910.29(b)(13). Where a guardrail system is used around a hole that serves as a point of access such as a ladderway, the opening must either have a self-closing gate that slides or swings away from the hole, fitted with a top rail and midrail, or be offset so a person cannot walk directly into the hole. A chain is neither, and neither is a removable rail section that ends up leaning against the parapet.

The failure mode the rule is written against is a worker coming up out of the hatch with both hands full and no way to close the opening behind them, which is exactly when a chain does not get reconnected. See roof hatch guardrails.

Is the hatch lid enough on its own?

Only while it is closed and only if it meets the cover requirements. A propped-open lid is not a cover, and propped open is the state it is in when people are moving through it.

Guardrail

Does OSHA prefer guardrails or personal fall arrest?

Where a guardrail is feasible it is the stronger control, and the hierarchy of controls points there first. The reason is failure modes rather than regulatory preference. Personal fall arrest depends on a worker wearing the harness correctly, clipping to the right anchor, and having enough clearance below to actually arrest a fall. A guardrail removes all three variables and protects everyone on the deck for the whole shift.

Geometry is the same either way: 42 inches plus or minus 3 above the walking surface, withstanding 200 pounds applied in any outward or downward direction without deflecting below 39 inches, under 1926.502(b) in construction and 1910.29(b)(1) in general industry.

Will a rooftop guardrail damage the membrane or void the warranty?

Not if it is non-penetrating. Weighted-base and clamp-mounted systems hold the required geometry without drilling, which is why they exist for TPO, EPDM and modified bitumen. If someone proposes bolting through a warranted roof, get the roofing manufacturer's position in writing first. See guardrail systems.

Aviation and hangars

What fall protection applies in an aircraft hangar?

Hangar and shop work is general industry, so the trigger is 4 feet under 1910.28(b)(1)(i) rather than the 6 feet people expect. A wing surface clears that easily.

There is a second point that cuts against the usual excuse. OSHA's rolling-stock position turns back to 1910.132(d) where the work happens inside of or contiguous to a building and fall protection is feasible. A hangar is the textbook case of inside a building, so the infeasibility argument that carries some weight on an open ramp does not travel indoors. See aircraft and hangar fall protection.

We installed rail and technicians still are not clipping in. Why?

Usually a geometry problem rather than a compliance problem. The work moves along the fuselage, out the wing, up to the tail, then to a different type in a different bay. Rail installed around one airframe leaves gaps on the next, and a mixed fleet inherits those gaps permanently. If a system only reaches half the positions the job requires, people stop using it for all of them.

California and Cal/OSHA

Are the heat illness rules outdoor only?

No. California runs both. 8 CCR 3395 covers outdoor work, requiring shade at 80 degrees and high-heat procedures at 95. 8 CCR 3396 covers indoor workplaces from 82 degrees. Most heat plans written before 2024 address only the outdoor standard and are now incomplete. If yours has one section, it is probably out of date.

Do I really need an IIPP?

Yes, if you have employees in California. 8 CCR 3203 makes an effective, written Injury and Illness Prevention Program mandatory for every California employer, and it is the most commonly cited standard in the state.

The test is not whether the binder exists, it is whether it is implemented. That word is in the standard, and it is where most citations come from. Construction also needs a Code of Safe Practices under 8 CCR 1509, reflecting the work you actually do.

Is Cal/OSHA just federal OSHA with a different name?

No. California runs an approved state plan with standards that have no federal equivalent at all: heat illness indoors and outdoors, wildfire smoke at 8 CCR 5141.1 with action required once the AQI for PM2.5 reaches 151, and the mandatory IIPP. A written programme bought from a national provider is built to the federal baseline and leaves the California-specific gaps for you to discover during an inspection. How we handle Cal/OSHA compliance.

Confined space

Does every permit-required entry need a tripod and winch?

Not every entry, but the retrieval rule is stricter than most people assume. 29 CFR 1910.146(k)(3) requires retrieval systems whenever an authorised entrant enters a permit space, unless the equipment would increase the overall risk or would not contribute to rescue. Paragraph (k)(3)(ii) requires a mechanical device be available to retrieve personnel from vertical type permit spaces more than 5 feet deep.

Five feet is shallower than most crews picture when they hear confined space. See confined space equipment.

Ask us one that is not here

If your question is not on this page, call 949-954-6581 or book a call. Consulting is Southern California, from Ventura County to the Mexico border. Equipment sales and rentals ship nationwide.