Does OSHA require a written confined space rescue plan?

OSHA 29 CFR 1910.146(k) requires the employer to evaluate and designate rescue services, and the entry permit must record the rescue service and how to summon it. A written plan is the practical way to prove that evaluation — inspectors expect one, and it is mandatory when an external service is used (see §1910.146(k)(1)(i)–(iv)).

What is the required rescue response time?

OSHA does not fix a numeric response time, but the rescue service must be able to respond 'in a timely manner' relative to the hazards. For IDLH atmospheres this is universally interpreted as 3–4 minutes — the brain-injury threshold from oxygen deprivation. Document the response time you rely on and how you verified it.

How does this align with UK BS 8484 and the Confined Spaces Regulations 1997?

In the UK, Regulation 5 of the Confined Spaces Regulations 1997 and HSE guidance L101 require 'suitable and sufficient arrangements' for rescue before entry begins. BS 8484 covers the alarm-receiving-centre (ARC) response for lone workers and is referenced when your rescue plan depends on an ARC to summon fire & rescue.

Can we rely on the local fire brigade or 911/999 as our rescue service?

Only if you have formally evaluated them under §1910.146(k)(1) and confirmed in writing that they are proficient with confined space rescue, willing to respond to your site, and can meet your response-time target. Many public fire departments will not accept this designation — get it in writing before you write it into the plan.

How often should we drill the rescue plan?

At least once every 12 months per §1910.146(k)(2)(iv), on either the actual permit space or a representative one with the same access openings, size, and internal configuration. Drill records feed into the annual permit programme review under §1910.146(d)(14).

How does the rescue plan link to the entry permit?

The entry permit lists the rescue service and how to summon it (field 11 of the 14 §1910.146(f) fields). The rescue plan is the underlying document — the permit references it, the attendant works to it, and cancelled permits feed drill and lessons-learned reviews.

Guide + Template · OSHA 1910.146(k) & UK L101

Confined space rescue plan

A practical guide to writing a confined space rescue plan that satisfies OSHA 29 CFR 1910.146(k), the UK Confined Spaces Regulations 1997 (HSE L101), and BS 8484 alarm-response. Includes the 10 mandatory sections, rescue-mode decision logic, response-time benchmarks, and an annual drill workflow.

Get the template See the entry permit template Read the pillar guide

What's inside

The 10 mandatory sections of a rescue plan

OSHA §1910.146(k) and UK L101 both require the employer to demonstrate — before entry begins — that a competent rescue capability is in place. The template captures each of these sections so the plan is inspection-ready.

1Space identification, hazards, and access constraints
2Rescue mode: entry, non-entry (retrieval), or self-rescue justification
3Rescue team roster, qualifications, and medical clearance
4Rescue equipment inventory (tripod/davit, SRL, harness, SCBA, comms)
5Response time commitment and how it was verified
6Communication and alarm procedures (attendant ↔ entrants ↔ rescue)
7Casualty handling, first-aid, and medical transport route
8Coordination with off-site services (fire & rescue, EMS, ARC)
9Annual practice-drill record with representative-space evaluation
10Plan review, revision history, and sign-off

Source: 29 CFR 1910.146(k); HSE L101 §54–§60; BS 8484:2022.

Choose a rescue mode

Entry, non-entry, or self-rescue

Entry rescue

Trained rescuers enter the space to retrieve the casualty. Required when non-entry rescue is not feasible (space geometry, entrant orientation).

Ref: 29 CFR 1910.146(k)(1)–(2)

Non-entry (retrieval)

Attendant retrieves the entrant using a full-body harness and retrieval line attached to a mechanical device. Default whenever the space allows.

Ref: 29 CFR 1910.146(k)(3); UK L101 §55

Self-rescue

Entrants evacuate under their own power on the attendant's order. Only valid when a permit prohibited condition is detected early and evacuation is possible.

Ref: 29 CFR 1910.146(e)(2)

How to build it

Assess → select → equip → drill

Assess

Evaluate each permit-required space: geometry, contents, atmospheric hazards, engulfment risk, distance-to-daylight. Decide the rescue mode per space, not per programme.

Classify the space

Select rescue capability

Confirm rescue service (in-house team or external provider) is proficient for these spaces and will arrive within the response time the hazards justify — typically 3–4 minutes for IDLH atmospheres.

Rescue plan template

Equip & train

Issue retrieval systems for every non-entry rescue, SCBA and PPE for entry rescues, and record training + medical clearance. UK: align with BS 8484 for lone-worker alarm response.

Training requirements

Drill & review

Run a practice drill on a representative permit space at least every 12 months. Feed lessons learned into the permit programme review.

Drill checklist

Response time

How fast does 'timely' really mean?

OSHA leaves response time to the employer's hazard assessment, but case law and HSE guidance converge on the same numbers:

IDLH atmosphere: 3–4 minutes to entrant (brain-injury threshold from anoxia).
Non-IDLH, engulfment risk: Sub-15 minutes and on-site rescue staged during entry.
Non-IDLH, no engulfment: Response time justified by risk assessment and documented on the plan.
Lone-worker alarm (UK): BS 8484 ARC response target — Category 1 police / EMS dispatch on verified alarm.

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