4.1 The second victim

1 OSHA Accident Search, Summary Nr 146892.015

That paragraph is a paraphrase of a public OSHA abstract, and there is nothing unusual about it. The second man did everything a decent person does. He saw a colleague fall, he raised the alarm, and he went to help. The atmosphere that had incapacitated the first worker in seconds was still in the vault, and it did the same thing to him.

This is why 29 CFR 1910.146(d)(9) is written the way it is. It requires the employer to develop and implement procedures for four things:

Most written programs cover the first three and treat the fourth as an afterthought. The fourth is the one that would have saved the man in the vault, and it is the only requirement in the whole standard that protects a worker from their own decency. 1926.1204(i) is the construction equivalent and adds procedures for summoning emergency assistance in the event of a failed non-entry rescue.

2 Why the coworker goes in, every time

The instinct is not the problem. The problem is that a confined space emergency presents itself in a way that makes entry look reasonable.

• The hazard is invisible and still there. Whatever dropped the first person has not been used up. It is at the same concentration, in the same place, waiting for the next set of lungs.
• The victim does not look poisoned. An unconscious person at the bottom of a vault looks like somebody who fell and hit their head. Falling is a problem you can solve by climbing down.
• It happens fast and quietly. There is no cough, no shout, no warning. In many abstracts the first indication is that somebody stopped answering.
• The distance looks trivial. Eight feet down, an arm's length away. The definitions in Part 1 already answered that one: entry has occurred as soon as any part of the body breaks the plane of the opening — whether or not the action was intentional (1926.1202).
• Nobody has ever said out loud who is allowed to go in. That is the training gap 1926.1207(a) closes: training must result in an understanding of the hazards and the controls, and for those employees not authorized to perform entry rescues, in the dangers of attempting such rescues.

3 Outside the space is not the same as safe

1910.146(b) defines an emergency as any occurrence — including any failure of hazard control or monitoring equipment — or event, internal or external to the permit space, that could endanger entrants. The construction definition at 1926.1202 adds a failure of power to the list. The words “or external” are there because the hazard does not respect the plane of the opening.

OSHA Accident Search Summary Nr 145506.015 (04/15/2022) makes the point better than any argument. An employee had come to replace a coworker in her role as the permit-required confined space attendant, so that she could take a break. A few minutes after taking over the role, he was found slouched over, unresponsive and unconscious. He was killed. He never entered anything.

This is also why the attendant's evacuation triggers at 1910.146(i)(6) include, at (iii), a situation outside the space that could endanger the authorized entrants — and at (iv), the attendant's own inability to safely perform all the attendant duties. Both of those are the attendant reporting on their own environment.

4 The first sixty seconds, for someone who is not a rescuer

Everything below is what the standard assigns to people at the portal. None of it is entry, and none of it requires rescue training — but all of it requires having been told in advance.

1. 1
   Do not enter. This is a decision made before the shift starts, because it cannot be made reliably in the moment. It is what 1910.146(d)(9)'s fourth procedure is for.
2. 2
   Summon rescue, with the words already chosen. The attendant summons rescue as soon as they determine that entrants may need assistance to escape — 1910.146(i)(7) — and the permit already carries the service and the means for summoning them under (f)(11). “Confined space rescue, vault 4 at gate 3, one person down, H2S” is a sentence somebody wrote down in advance.
3. 3
   Attempt non-entry rescue if the procedure provides for it. The attendant performs non-entry rescues as specified by the employer's rescue procedure — 1910.146(i)(9). That means hauling on the retrieval line from outside, which is the next chapter.
4. 4
   Keep everyone else out. The attendant warns unauthorized persons away, tells anyone who has entered to exit immediately, and informs the entrants and the entry supervisor — (i)(8). The entry supervisor removes unauthorized individuals who enter or attempt to enter — (j)(5). In an emergency, “unauthorized” describes most of the people who arrive.
5. 5
   Have the safety data sheets ready to travel. 1910.146(k)(4): if an injured entrant is exposed to a substance for which written information is required to be kept at the worksite, that information shall be made available to the medical facility treating the exposed entrant. The treating physician needs to know what the exposure was, and the reason is in Part 2, Chapter 1 — some exposures collapse a person 12 to 72 hours later, while they feel normal.

5 What “timely” means when the atmosphere is IDLH

1910.146(k)(1)(i) requires the employer to evaluate a prospective rescuer's ability to respond to a rescue summons in a timely manner, considering the hazards identified. The note to that paragraph explains that what is timely varies with the hazards, and points at 1910.134, the respiratory protection standard, which requires a standby person capable of immediate action to rescue employees wearing respiratory protection in IDLH atmospheres.

Appendix F(A)(II)(1) turns it into a decision rule. If entry is to be made into an IDLH atmosphere, or into a space that can quickly develop an IDLH atmosphere if ventilation fails or for other reasons, the rescue team or service would need to be standing by at the permit space. On the other hand, if the danger to entrants is restricted to mechanical hazards that would cause injuries — broken bones, abrasions — a response time of ten or fifteen minutes might be adequate.

Read that against the vault in Summary Nr 146892.015. A rescue service twelve minutes away is a reasonable arrangement for a fall in a dry pit and an irrelevance in a vault full of toxic gas. The question is never “how fast is our rescue service” in the abstract. It is “how fast does this space kill.”

6 What the rest of this part covers

The remaining three chapters follow the order the standard uses. Chapter 2 covers non-entry rescue — the retrieval system, the hardware requirements at 1910.146(k)(3) and 1926.1211(c), and the situations where it will not work. Chapter 3 covers choosing and evaluating a rescue service, using the criteria in Appendix F, including the sentence in which OSHA states plainly that posting a phone number is not compliance. Chapter 4 covers training, contractors and the program review — how a rescue arrangement stays real between entries.

If you would rather write the document than read about it, the confined space rescue plan generator is built from these paragraphs: it characterizes the space with Appendix F's own four criteria, derives the capabilities a rescue service would need, and records the evaluation.