This page lists the number, title, publication date, and revisions for each regulatory guide in Division 1, "Power Reactors," with references to draft guides and related documents (where applicable).

See NRC Regulatory Guides for more general information.

Reviewed dates (the last column in the table) are when the staff completed a periodic review of the associated guide. Regulatory Guides are reviewed about every 10 years, although in some cases a guide will reviewed before the normal 10 year period. The NRC began these reviews in 2010, and began posting the results of its reviews on this site in 2013. The review dates are hyperlinked to the review memorandum, which provide useful information about the status and any known issues with the associated regulatory guide.

Guide Number	Title	Rev.	Publish Date	Reviewed
1.81	Shared Emergency and Shutdown Electric Systems for Multi-Unit Nuclear Power Plants	1	01/1975	01/2019 02/2014
1.81		--	06/1974
1.82	Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident + HISTORY - HISTORY DG-1234, Proposed Revision 4, published 07/2010 DG-1107, Proposed Revision 3, published 02/2003 DG-1038, Proposed Revision 2, published 07/1995 Draft MS 203-4, Proposed Revision 1, published 05/1983	4	03/2012	01/2015
		3	11/2003	04/2012
		2	05/1996
		1	11/1985
		--	06/1974
1.83	Inservice Inspection of Pressurized Water Reactor Steam Generator Tubes (Withdrawn -- See 74 FR 58324, 11/12/2009)	W	11/2009
		1	07/1975
		--	07/1974
1.84	Design, Fabrication, and Materials Code Case Acceptability, ASME Section III + HISTORY - HISTORY DG-1295, Proposed Revision 37, published 03/2016 DG-1230, Proposed Revision 36, published 06/2013 DG-1191, Proposed Revision 35, published 06/2009 DG-1133, Proposed Revision 34, published 10/2006 DG-1124, Proposed Revision 33, published 04/2004 DG-1090, Proposed Revision 32, published 12/2001 (combined RG 1.84 and 1.85) DG-1049, Proposed Revision 31, published 05/1997	37	01/2018
		36	08/2014
		35	10/2010
		34	10/2007
		33	08/2005
		32	06/2003
		31	05/1999
		30	10/1994
		29	07/1993
		28	04/1992
		27	11/1990
		26	07/1989
		25	05/1998
		24	06/1986
		23	09/1985
		22	07/1984
		21	09/1983
		20	11/1982
		19	04/1982
		18	08/1981
		17	12/1980
		16	05/1980
		15	05/1979
		14	11/1978
		13	07/1978
		12	03/1978
		11	11/1977
		10	08/1977
		9	03/1977
		8	11/1976
		7	08/1976
		6	05/1976
		5	03/1976
		4	11/1975
		3	09/1975
		2	06/1975
		1	04/1975
		--	06/1974
1.85	Materials code case Acceptability - - ASME Section III, Division 1 (Withdrawn See -- 69 FR 34202 06/18/2004) + HISTORY - HISTORY DG-1049, proposed revision 31, published 05/1997 Guidance from Revision 31 of RG 1.85 was incorporated into Revision 32 of RG 1.84, published 06/2003.	W	06/2004
		31	05/1999
		30	10/1994
		27	11/1990
		26	07/1989
		23	09/1985
		22	07/1984
		21	09/1983
		17	12/1980
		16	05/1980
		15	05/1979
		14	11/1978
		13	07/1978
		12	03/1978
		11	11/1977
		10	08/1977
		9	03/1977
		8	11/1976
		7	08/1976
		6	05/1976
		5	02/1976
		4	11/1975
		3	09/1975
		2	06/1975
		1	04/1975
		0	06/1974
1.86	Termination of Operating Licenses for Nuclear Reactors (Withdrawn -- See 81 FR 53507, 08/12/2016)	W	08/2016
1.86		--	06/1974	12/2011
1.87	Guidance for Construction of Class 1 Components in Elevated-Temperature Reactors + HISTORY - HISTORY Supplement to ASME Section III Code Cases 1592, 1593, 1594, 1595, and 1596	--	06/1975	08/2016 11/2010
1.88	Collection, Storage, and Maintenance of Nuclear Power Plant Quality Assurance Records (Withdrawn -- See 56 FR 36175, 07/31/1991)	W	07/1991
1.88		2	10/1976
1.89	Environmental Qualification of Certain Electric Equipment Important to Safety for Nuclear Power Plants + HISTORY - HISTORY Draft EE 042-2, Proposed Revision 1, published 02/1982	1	06/1984	12/2018 05/2014
1.89		--	11/1974
1.90	Inservice Inspection of Prestressed Concrete Containment Structures with Grouted Tendons + HISTORY - HISTORY DG-1197, Proposed Revision 2, published 04/2011	2	11/2012	05/2018
		1	08/1977
		--	11/1974
1.91	Evaluations of Explosions Postulated To Occur on Transportation Routes Near Nuclear Power Plants + HISTORY - HISTORY DG-1270, Proposed Revision 2, published 07/2011	2	04/2013
		1	02/1978
		--	01/1975
1.92	Combining Modal Responses and Spatial Components in Seismic Response Analysis + HISTORY - HISTORY DG-1127, Second Proposed Revision 2, published 02/2005 DG-1108, First Proposed Revision 2, published 08/2001	3	09/2012	05/2018
		2	07/2006
		1	02/1976
		--	12/1974
1.93	Availability of Electric Power Sources + HISTORY - HISTORY DG-1244, Proposed Revision 1 to RG 1.93, published 09/2010	1	03/2012	04/2017
1.93		--	12/1974
1.94	Quality Assurance Requirements for Installation, Inspection, and Testing of Structural Concrete and Structural Steel During the Construction Phase of Nuclear Power Plants (Withdrawn -- See 75 FR 54921, 09/09/2010) + HISTORY - HISTORY Draft RS 908-5, Proposed Revision 2, published 09/1979	W	09/2010
		1	04/1976
		--	04/1975
1.95	Protection of Nuclear Power Plant Control Room Operators Against an Accidental Chlorine Release (Withdrawn -- See 67 FR 939 01/08/2002) + HISTORY - HISTORY Guidance from RG 1.95 has been updated and incorporated into Revision 1 of RG 1.78, published 01/2002.	W	01/2002
1.95		1	01/1977
1.96	Design of Main Steam Isolation Valve Leakage Control Systems for Boiling Water Reactor Nuclear Power Plants	1	06/1976	10/2013
1.96		--	05/1975
1.97	Criteria for Accident Monitoring Instrumentation for Nuclear Power Plants + HISTORY - HISTORY DG-1335, Proposed Revision 5, published 12/2017 DG-1128, Proposed Revision 4, published 08/2005 Revision 2 Errata, published 07/1981 Draft RS 917-4, Proposed Revision 2, published 12/1979 Prior to the issuance of Revision 1, RG 1.97 was entitled "Instrumentation for Light-Water-Cooled Nuclear Power Plants to Assess Plant and Environs Conditions During and Following an Accident"	5	05/2019
		4	06/2006	06/2013
		3	05/1983
		2	12/1980
		1	08/1977
		--	12/1975
1.98	Assumptions Used for Evaluating the Potential Radiological Consequences of a Radioactive Offgas System Failure in a Boiling Water Reactor (for Comment)	--	03/1976	04/2016 10/2010
1.99	Radiation Embrittlement of Reactor Vessel Materials + HISTORY - HISTORY Draft ME 305-4, Proposed Revision 2, published 02/1986	2	05/1988	01/2014
		1	04/1977
		--	07/1975
1.100	Seismic Qualification of Electric and Mechanical Equipment for Nuclear Power Plants + HISTORY - HISTORY DG-1175, Proposed Revision 3, published 05/2008 Draft EE 108-5, Proposed Revision 2, published 08/1987	3	09/2009	12/2014
		2	06/1988	09/2009
		1	08/1977
		--	03/1976