Confined Space Attendant Duties: The Person Outside the Opening

The attendant, sometimes called the hole watch or safety watch, is an individual stationed outside one or more permit spaces who monitors the authorized entrants and performs the attendant's duties in the employer's permit program. Many confined space deaths involve attendants or co-workers who went in to help. A trained attendant's job is to get help, not to become a second victim.

The attendant's duties

Under 1910.146(i), the employer must make sure each attendant:

1. Knows the hazards that may be faced during entry, including the mode, signs or symptoms and consequences of exposure.
2. Is aware of possible behavioral effects of hazard exposure in entrants, such as confusion, slurred speech or unusual behavior.
3. Continuously maintains an accurate count of authorized entrants in the space and makes sure the means used to identify authorized entrants accurately identifies who is in the space.
4. Remains outside the permit space during entry operations until relieved by another attendant.
5. Communicates with authorized entrants as necessary to monitor their status and alert them of the need to evacuate.
6. Monitors activities inside and outside the space to determine whether it's safe for entrants to remain, and orders immediate evacuation if:
   • The attendant detects a prohibited condition,
   • The attendant detects the behavioral effects of hazard exposure in an entrant,
   • The attendant detects a situation outside the space that could endanger the entrants, or
   • The attendant cannot effectively and safely perform all the required duties.
7. Summons rescue and other emergency services as soon as the attendant determines that entrants may need assistance to escape.
8. Takes action when unauthorized persons approach or enter: warns them to stay away, advises them to exit immediately if they have entered, and informs the entrants and entry supervisor.
9. Performs non-entry rescues as specified by the employer's rescue procedure.
10. Performs no duties that might interfere with the primary duty to monitor and protect the entrants.

Keeping an accurate count

The attendant must know exactly who is inside at all times. Common methods:

• A sign-in and sign-out roster at the opening.
• Tags or badges hung on a board at the entry when someone goes in.
• Entrant names on the posted permit, updated as people enter and exit.

Watching for behavioral effects

Atmospheric hazards often show up as behavior before the entrant realizes something is wrong: slurred speech, confusion, giggling or euphoria, slow responses, clumsiness, or not answering. The attendant treats any of these as a reason to order evacuation.

Watching outside the space

Danger can come from outside: a truck idling near the blower intake, a nearby process release, a fire, severe weather, or someone about to open a valve. The attendant watches the surroundings as well as the opening.

Monitoring more than one space

1910.146(d)(7) allows one attendant to monitor more than one permit space only if the program includes the means and procedures for doing so, including how the attendant will respond to an emergency in one space without failing the others.

Non-entry rescue

The attendant's rescue role is usually to operate the retrieval system from outside, such as cranking a winch on a tripod to lift an entrant out of a vertical space. Retrieval lines must be attached so rescue can begin as soon as the rescuer becomes aware it's needed (1910.146(k)(3)).

Key takeaways

• The attendant stays outside, keeps an accurate count and stays in communication.
• Order evacuation for a prohibited condition, behavioral effects, an outside danger, or when the attendant can't do the job.
• Summon rescue as soon as entrants may need help to escape.
• Keep unauthorized people away, and do nothing that distracts from monitoring.
• Enter for rescue only if trained, equipped and relieved by another attendant.

Last reviewed: October 25, 2026 · Free general education based on OSHA 29 CFR 1910.146 and 29 CFR 1926 Subpart AA. It does not replace the site-specific training, written program and hands-on evaluation your employer must provide, and it does not issue a certificate. Nothing you enter on this page is saved or sent.