#	Federal Register
1	07/16/2024 - 1910.146(d) - 89:57944-57946 - Permit-Required Confined Spaces Standard; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
2	07/16/2024 - 1910.146(d)(5)(vi), 1910.146(d), 1910.146(d)(3), 1910.146(d)(14) - 89:57944-57946 - Permit-Required Confined Spaces Standard; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
3	06/23/2021 - 1910.146(d) - 86:32978-32980 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements
4	06/23/2021 - 1910.146(d), 1910.146(d)(3), 1910.146(d)(5)(vi), 1910.146(d)(14) - 86:32978-32980 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
5	04/28/2021 - 1910.146(d) - 86:22458-22466 - STP Nuclear Operating Company; Grant of Permanent Variance
6	09/01/2020 - 1910.146(d) - 85:54424-54432 - STP Nuclear Operating Company; Application for Permanent Variance and Interim Order; Grant of Interim Order; Request for Comments - PDF
7	05/22/2018 - 1910.146(d) - 83:23724-23726 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements
8	05/22/2018 - 1910.146(d), 1910.146(d)(5)(vi), 1910.146(d)(14) - 83:23724-23726 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
9	04/27/2015 - 1910.146(d) - 80:23297-23300 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Collection of Information (Paperwork) Requirements - PDF
10	04/27/2015 - 1910.146(d), 1910.146(d)(5)(vi), 1910.146(d)(14) - 80:23297-23300 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Collection of Information (Paperwork) Requirements - PDF

#	Letters of Interpretation
1	11/03/2023 - 1910.146(d)(14) - Retention of atmospheric monitoring records for a permit-required confined space
2	11/03/2023 - 1910.146(d)(5) - Retention of atmospheric monitoring records for a permit-required confined space
3	07/24/2023 - 1910.146(d) - Confined Space Entry Permits
4	04/15/2014 - 1910.146(d) - Centralized Monitoring for Permit-Required Confined Spaces
5	05/12/2009 - 1910.146(d)(5) - Applicability of the PRCS standard to aircraft maintenance activities.
6	05/12/2009 - 1910.146(d), 1910.146(d)(5) - Applicability of the PRCS standard to aircraft maintenance activities.
7	08/06/2007 - 1910.146(d)(3) - Whether reclassification is available for permit-required confined spaces with potentially hazardous atmospheres.
8	09/21/2006 - 1910.146(d)(3) - Requirements for developing entry procedures for permit-required confined spaces.
9	03/30/1999 - 1910.146(d)(5)(iii) - Atmospheric Testing required for confined space entry.
10	03/30/1999 - 1910.146(d)(5)(ii) - Atmospheric Testing required for confined space entry.
11	04/12/1996 - 1910.146(d) - Confined spaces: use of rescue-type SCBAs; maintenance vs. construction
12	09/19/1994 - 1910.146(d)(11) - Elevator industry employees working in and around pits and equipment.
13	09/19/1994 - 1910.146(d), 1910.146(d)(11) - Elevator industry employees working in and around pits and equipment.

#	Regulations
1	07/24/2003 - - Permit-required confined spaces