29 CFR 1910 · General Industry · Subpart J

1910.146(d): Permit Space Program Requirements

By Black Belt Safety Editorial Team Official text as of October 15, 2026 Data updated October 20, 2026 8 min read

In plain words:

Under a permit-required confined space program, employers must prevent unauthorized entry, identify and evaluate hazards before anyone enters, and set safe entry procedures such as isolating, ventilating and barricading the space. They must provide needed equipment at no cost, including testing, ventilation, communication, lighting, ladders and rescue gear, and must test conditions in the space before entry is allowed.

Key takeaways

  • 1910.146(d) is part of OSHA's general industry standards (29 CFR Part 1910, Subpart J).
  • OSHA cited it 480 times in the last 3 years, in 201 inspections, with $3,013,165 in current penalties.
  • 14 deaths are linked to inspections that cited this rule.
  • Most citations: TX (55), IL (41), MN (34).
  • Related part: 1910.146(d)(3) (107 citations).
  • Free 5-minute toolbox talk for your crew below.
480citations, 3 years
$3,013,165current penalties
201inspections
14linked deaths
In this article
  1. What this rule covers
  2. Official text
  3. Injuries linked to this rule
  4. Where and how often it was cited
  5. Free toolbox talk
  6. OSHA interpretation letters
  7. Related parts of this rule
  8. Get your crew competent
  9. Frequently asked questions
  10. About this page

What this rule covers

29 CFR 1910.146(d) ("Permit-required confined space program") is one requirement inside 1910.146 Permit-required confined spaces, an OSHA general industry standard (Part 1910, Subpart J). It includes 35 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.

Official text

(d) Permit-required confined space program (permit space program). Under the permit space program required by paragraph (c)(4) of this section, the employer shall: 480 citations

(1) Implement the measures necessary to prevent unauthorized entry; Open (d)(1) 16 citations

(2) Identify and evaluate the hazards of permit spaces before employees enter them; Open (d)(2) 40 citations

(3) Develop and implement the means, procedures, and practices necessary for safe permit space entry operations, including, but not limited to, the following: Open (d)(3) 107 citations

(i) Specifying acceptable entry conditions; Open (d)(3)(i) 8 citations

(ii) Providing each authorized entrant or that employee's authorized representative with the opportunity to observe any monitoring or testing of permit spaces; 2 citations

(iii) Isolating the permit space; Open (d)(3)(iii) 15 citations

(iv) Purging, inerting, flushing, or ventilating the permit space as necessary to eliminate or control atmospheric hazards; Open (d)(3)(iv) 8 citations

(v) Providing pedestrian, vehicle, or other barriers as necessary to protect entrants from external hazards; and

(vi) Verifying that conditions in the permit space are acceptable for entry throughout the duration of an authorized entry. Open (d)(3)(vi) 13 citations

(4) Provide the following equipment (specified in paragraphs (d)(4)(i) through (d)(4)(ix) of this section) at no cost to employees, maintain that equipment properly, and ensure that employees use that equipment properly: Open (d)(4) 66 citations

(i) Testing and monitoring equipment needed to comply with paragraph (d)(5) of this section; Open (d)(4)(i) 33 citations

(ii) Ventilating equipment needed to obtain acceptable entry conditions; 8 citations

(iii) Communications equipment necessary for compliance with paragraphs (h)(3) and (i)(5) of this section; 3 citations

(iv) Personal protective equipment insofar as feasible engineering and work practice controls do not adequately protect employees;

(v) Lighting equipment needed to enable employees to see well enough to work safely and to exit the space quickly in an emergency;

(vi) Barriers and shields as required by paragraph (d)(3)(v) of this section.

(vii) Equipment, such as ladders, needed for safe ingress and egress by authorized entrants; Open (d)(4)(vii) 4 citations

(viii) Rescue and emergency equipment needed to comply with paragraph (d)(9) of this section, except to the extent that the equipment is provided by rescue services; and Open (d)(4)(viii) 6 citations

(ix) Any other equipment necessary for safe entry into and rescue from permit spaces. Open (d)(4)(ix) 2 citations

(5) Evaluate permit space conditions as follows when entry operations are conducted: Open (d)(5) 91 citations

(i) Test conditions in the permit space to determine if acceptable entry conditions exist before entry is authorized to begin, except that, if isolation of the space is infeasible because the space is large or is part of a continuous system (such as a sewer), pre-entry testing shall be performed to the extent feasible before entry is authorized and, if entry is authorized, entry conditions shall be continuously monitored in the areas where authorized entrants are working; Open (d)(5)(i) 58 citations

(ii) Test or monitor the permit space as necessary to determine if acceptable entry conditions are being maintained during the course of entry operations; and Open (d)(5)(ii) 15 citations

(iii) When testing for atmospheric hazards, test first for oxygen, then for combustible gases and vapors, and then for toxic gases and vapors. Open (d)(5)(iii) 4 citations

(iv) Provide each authorized entrant or that employee's authorized representative an opportunity to observe the pre-entry and any subsequent testing or monitoring of permit spaces; Open (d)(5)(iv) 2 citations

(v) Reevaluate the permit space in the presence of any authorized entrant or that employee's authorized representative who requests that the employer conduct such reevaluation because the entrant or representative has reason to believe that the evaluation of that space may not have been adequate;

(vi) Immediately provide each authorized entrant or that employee's authorized representative with the results of any testing conducted in accord with paragraph (d) of this section. 1 citations

Atmospheric testing conducted in accordance with appendix B to § 1910.146 would be considered as satisfying the requirements of this paragraph. For permit space operations in sewers, atmospheric testing conducted in accordance with appendix B, as supplemented by appendix E to § 1910.146, would be considered as satisfying the requirements of this paragraph.

(6) Provide at least one attendant outside the permit space into which entry is authorized for the duration of entry operations; Open (d)(6) 31 citations

Attendants may be assigned to monitor more than one permit space provided the duties described in paragraph (i) of this section can be effectively performed for each permit space that is monitored. Likewise, attendants may be stationed at any location outside the permit space to be monitored as long as the duties described in paragraph (i) of this section can be effectively performed for each permit space that is monitored.

(7) If multiple spaces are to be monitored by a single attendant, include in the permit program the means and procedures to enable the attendant to respond to an emergency affecting one or more of the permit spaces being monitored without distraction from the attendant's responsibilities under paragraph (i) of this section;

(8) Designate the persons who are to have active roles (as, for example, authorized entrants, attendants, entry supervisors, or persons who test or monitor the atmosphere in a permit space) in entry operations, identify the duties of each such employee, and provide each such employee with the training required by paragraph (g) of this section; Open (d)(8) 11 citations

(9) Develop and implement procedures for summoning rescue and emergency services, for rescuing entrants from permit spaces, for providing necessary emergency services to rescued employees, and for preventing unauthorized personnel from attempting a rescue; Open (d)(9) 63 citations

(10) Develop and implement a system for the preparation, issuance, use, and cancellation of entry permits as required by this section; Open (d)(10) 17 citations

(11) Develop and implement procedures to coordinate entry operations when employees of more than one employer are working simultaneously as authorized entrants in a permit space, so that employees of one employer do not endanger the employees of any other employer; Open (d)(11)

(12) Develop and implement procedures (such as closing off a permit space and canceling the permit) necessary for concluding the entry after entry operations have been completed; 2 citations

(13) Review entry operations when the employer has reason to believe that the measures taken under the permit space program may not protect employees and revise the program to correct deficiencies found to exist before subsequent entries are authorized; and 6 citations

Examples of circumstances requiring the review of the permit space program are: any unauthorized entry of a permit space, the detection of a permit space hazard not covered by the permit, the detection of a condition prohibited by the permit, the occurrence of an injury or near-miss during entry, a change in the use or configuration of a permit space, and employee complaints about the effectiveness of the program.

(14) Review the permit space program, using the canceled permits retained under paragraph (e)(6) of this section within 1 year after each entry and revise the program as necessary, to ensure that employees participating in entry operations are protected from permit space hazards. Open (d)(14) 23 citations

Employers may perform a single annual review covering all entries performed during a 12-month period. If no entry is performed during a 12-month period, no review is necessary.

Appendix C to § 1910.146 presents examples of permit space programs that are considered to comply with the requirements of paragraph (d) of this section.

Source: eCFR, text current as of 2026-10-15. Read all of 1910.146.

Injuries linked to this rule

14 deaths are linked to inspections where OSHA cited 1910.146(d).

Employee dies from head injuries after fall into trailer tan
2025-01-30 · Fatal · LOUISVILLE, KY

On January 30, 2025, Employee #1 was working at a trailer truck wash business and had been subcontracted to clean out a trailer tank using a water hose. The business specialized in washing out livestock haulers. Employee #1 entered the tank to continue cleaning. A…

See all 14 cases

Full case list with employer, penalty, filters and download is part of OSHA Data (Purple Belt).

Unlock with Purple Belt

Where and how often it was cited

YearCitations
202313
2024182
2025132
2026153

Top states: TX (55), IL (41), MN (34), OH (33), TN (32)

Largest penalties

EmployerLocationPenalty for this rule
QUALAWASH HOLDINGS, LLCLA PORTE, TX$480,000
107323 - WAYNE TRANSPORTS INCVIRGINIA, MN$403,200
WESTROCK CP, LLCWEST POINT, VA$162,849
CLEAN HARBORS ENVIRONMENTAL SERVICES INC.TWINSBURG, OH$148,950
109588 - LANG COMPANIES INC DBA LANG FEEDS INCEDEN VALLEY, MN$100,000

Free toolbox talk

A 5-minute crew talk on 1910.146(d), plus alerts when this rule changes. Free.




OSHA interpretation letters

Related parts of this rule

Get your crew competent

Trainers on Black Belt Safety: Marc Harvey, Dana Reyes

Trainers and suppliers: feature your business on this rule for $25/month.

Frequently asked questions

What equipment must employers provide for permit space entry?

Testing and monitoring, ventilation, communication, PPE when controls are not enough, lighting, barriers, ladders, rescue gear and anything else needed, all at no cost to employees.

Must the space be tested before entry?

Yes. Conditions must be tested to see if acceptable entry conditions exist before entry is authorized.

Can an entrant watch the air testing?

Yes. Each authorized entrant or their representative must have the opportunity to observe any monitoring or testing.

About this page

Sources

3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.

Written and reviewed by

Black Belt Safety Editorial Team

Site Safety Officer and Safety Professional

OSHA 30 · CPR · USACE CQM

Written and reviewed by the Black Belt Safety team. Every post is checked against the OSHA standard or agency source it cites.

Scroll to top