Scram

A scram is a rapid plant shutdown through the insertion of all control rods

• A automatic scram is the type of scram which is triggered by automatically detecting various plant conditions (or even invalid signal).
• A manual scram means that the control rod insertion was trigger by a plant operators.

Scram lists

[Table View]

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• 2020: 40
• 2019: 49
• 2018: 46
• 2017: 39
• 2016: 44
• 2015: 55

Automatic Scram

	Start date	Site	Region
ENS 57033	17 March 2024 20:15:00	Comanche Peak	NRC Region 4
ENS 57004	4 March 2024 00:42:00	Nine Mile Point	NRC Region 1
ENS 57003	3 March 2024 17:42:00	Prairie Island	NRC Region 3
ENS 56894	16 December 2023 09:50:00	Grand Gulf	NRC Region 4
ENS 56887	13 December 2023 07:02:00	River Bend	NRC Region 4
ENS 56856	16 November 2023 07:27:00	Calvert Cliffs	NRC Region 1
ENS 56839	7 November 2023 21:17:00	Calvert Cliffs	NRC Region 1
ENS 56813	25 October 2023 01:59:00	Turkey Point	NRC Region 2
ENS 56731	9 September 2023 15:43:00	Ginna	NRC Region 1
ENS 56710	2 September 2023 10:32:00	Nine Mile Point	NRC Region 1
ENS 56585	22 June 2023 14:35:00	Robinson	NRC Region 2
ENS 56580	16 June 2023 23:32:00	Comanche Peak	NRC Region 4
ENS 56544	30 May 2023 08:46:00	Millstone	NRC Region 1
ENS 56478	20 April 2023 05:48:00	Brunswick	NRC Region 2
ENS 56459	9 April 2023 04:44:00	Palo Verde	NRC Region 4
ENS 56351	14 February 2023 17:03:00	Arkansas Nuclear	NRC Region 4
ENS 56329	1 February 2023 15:56:00	Farley	NRC Region 2
ENS 56328	1 February 2023 05:43:00	Clinton	NRC Region 3
ENS 56216	10 November 2022 12:44:00	Cook	NRC Region 3
ENS 56189	30 October 2022 10:53:00	Harris	NRC Region 2
... further results

Manual Scram

	Start date	Site	Region
ENS 57033	17 March 2024 20:15:00	Comanche Peak	NRC Region 4
ENS 57032	16 March 2024 19:49:00	Waterford	NRC Region 4
ENS 57021	11 March 2024 17:37:00	Hatch	NRC Region 2
ENS 57014	7 March 2024 19:42:00	Reed College (Reed)	NRC Region 0
ENS 56991	24 February 2024 20:46:00	Calvert Cliffs	NRC Region 1
ENS 56971	16 February 2024 11:34:00	Farley	NRC Region 2
ENS 56863	18 November 2023 05:55:00	River Bend	NRC Region 4
ENS 56852	14 November 2023 16:41:00	Farley	NRC Region 2
ENS 56846	10 November 2023 08:14:00	Susquehanna	NRC Region 1
ENS 56826	1 November 2023 10:48:00	Hatch	NRC Region 2
ENS 56790	13 October 2023 01:27:00	Ginna	NRC Region 1
ENS 56769	1 October 2023 03:14:00	Diablo Canyon	NRC Region 4
ENS 56692	22 August 2023 21:24:00	Vogtle 1/2	NRC Region 2
ENS 56658	4 August 2023 17:20:00	Turkey Point	NRC Region 2
ENS 56645	30 July 2023 19:26:00	Seabrook	NRC Region 1
ENS 56497	2 May 2023 08:23:00	Vogtle	NRC Region 2
ENS 56453	5 April 2023 10:51:00	Summer	NRC Region 2
ENS 56446	31 March 2023 18:32:00	Hatch	NRC Region 2
ENS 56282	20 December 2022 03:01:00	Grand Gulf	NRC Region 4
ENS 56278	17 December 2022 05:51:00	Cooper	NRC Region 4
... further results

by site - 24 months

Site	#Man	#Auto	Company	Event lists
Almaraz	0	0	Iberdrola	[Almaraz events]	[RSS]
Arkansas Nuclear	0	1	Entergy	[Arkansas Nuclear events]	[RSS]
Asco	0	0	Endesa	[Asco events]	[RSS]
Beaver Valley	1	0	FirstEnergy	[Beaver Valley events]	[RSS]
Belleville	0	0	Électricité de France	[Belleville events]	[RSS]
Blayais	0	0	Électricité de France	[Blayais events]	[RSS]
Braidwood	0	0	Constellation	[Braidwood events]	[RSS]
Browns Ferry	0	0	Tennessee Valley Authority	[Browns Ferry events]	[RSS]
Brunswick	0	1	Duke Energy	[Brunswick events]	[RSS]
Byron	0	0	Constellation	[Byron events]	[RSS]
Callaway	0	0	Ameren	[Callaway events]	[RSS]
Calvert Cliffs	2	2	Constellation	[Calvert Cliffs events]	[RSS]
Catawba	2	0	Duke Energy	[Catawba events]	[RSS]
Chernobyl	0	0		[Chernobyl events]	[RSS]
Clinton	0	1	Constellation	[Clinton events]	[RSS]
Cofrentes	0	0	Iberdrola	[Cofrentes events]	[RSS]
Columbia	0	0	Energy Northwest	[Columbia events]	[RSS]
Comanche Peak	1	3	Luminant	[Comanche Peak events]	[RSS]
Cook	1	2	American Electric Power	[Cook events]	[RSS]
Cooper	1	0	Entergy	[Cooper events]	[RSS]
Dampierre	0	0	Électricité de France	[Dampierre events]	[RSS]
Davis Besse	0	0	Cleveland Electric	[Davis Besse events]	[RSS]
Diablo Canyon	1	0	Pacific Gas & Electric	[Diablo Canyon events]	[RSS]
Dresden	0	1	Constellation	[Dresden events]	[RSS]
Duane Arnold	0	0	NextEra Energy	[Duane Arnold events]	[RSS]
Dungeness	0	0	EDF Energy	[Dungeness events]	[RSS]
Farley	3	2	Southern Nuclear	[Farley events]	[RSS]
Fermi	1	1	DTE Energy	[Fermi events]	[RSS]
FitzPatrick	0	0	Constellation	[FitzPatrick events]	[RSS]
Flamanville	0	0	Électricité de France	[Flamanville events]	[RSS]
Ginna	1	1	Constellation	[Ginna events]	[RSS]
Grand Gulf	2	1	Entergy	[Grand Gulf events]	[RSS]
Harris	2	1	Duke Energy	[Harris events]	[RSS]
Hartlepool	0	0	EDF Energy	[Hartlepool events]	[RSS]
Hatch	3	0	Southern Nuclear	[Hatch events]	[RSS]
Heysham	0	0	EDF Energy	[Heysham events]	[RSS]
Hinkley Point	0	0	EDF Energy	[Hinkley Point events]	[RSS]
Hope Creek	0	0	PSEG	[Hope Creek events]	[RSS]
Hunterston	0	0	EDF Energy	[Hunterston events]	[RSS]
Khmelnytskyi	0	0	Energoatom	[Khmelnytskyi events]	[RSS]
LaSalle	1	0	Constellation	[LaSalle events]	[RSS]
Lee	0	0	Duke Energy	[Lee events]	[RSS]
Limerick	0	0	Constellation	[Limerick events]	[RSS]
McGuire	0	0	Duke Energy	[McGuire events]	[RSS]
Millstone	0	1	Dominion	[Millstone events]	[RSS]
Monticello	0	0	Xcel Energy	[Monticello events]	[RSS]
Nine Mile Point	0	2	Constellation	[Nine Mile Point events]	[RSS]
Nogent	0	0	Électricité de France	[Nogent events]	[RSS]
North Anna	0	0	Dominion	[North Anna events]	[RSS]
Oconee	0	0	Duke Energy	[Oconee events]	[RSS]
Olkiluoto	0	0	Teollisuuden Voima	[Olkiluoto events]	[RSS]
Palisades	0	0	Entergy	[Palisades events]	[RSS]
Palo Verde	0	1	Arizona Public Service	[Palo Verde events]	[RSS]
Peach Bottom	0	1	Constellation	[Peach Bottom events]	[RSS]
Perry	0	0	FirstEnergy	[Perry events]	[RSS]
Point Beach	0	0	NextEra Energy	[Point Beach events]	[RSS]
Prairie Island	0	1	Xcel Energy	[Prairie Island events]	[RSS]
Quad Cities	2	0	Constellation	[Quad Cities events]	[RSS]
River Bend	1	1	Entergy	[River Bend events]	[RSS]
Rivne	0	0	Energoatom	[Rivne events]	[RSS]
Robinson	0	1	Duke Energy	[Robinson events]	[RSS]
Saint Lucie	1	0	NextEra Energy	[Saint Lucie events]	[RSS]
Salem	0	0	PSEG	[Salem events]	[RSS]
Seabrook	1	0	NextEra Energy	[Seabrook events]	[RSS]
Sequoyah	0	0	Tennessee Valley Authority	[Sequoyah events]	[RSS]
Sizewell	0	0	EDF Energy	[Sizewell events]	[RSS]
South Texas	0	0	STP Nuclear Operating Company	[South Texas events]	[RSS]
South Ukraine	0	0	Energoatom	[South Ukraine events]	[RSS]
Summer	1	0	South Carolina Electric & Gas Company	[Summer events]	[RSS]
Sundesert	0	0	San Diego Gas & Electric Compnay	[Sundesert events]	[RSS]
Surry	0	0	Dominion	[Surry events]	[RSS]
Susquehanna	1	1	Talen Energy	[Susquehanna events]	[RSS]
Taishan	0	0	China Guangdong Nuclear Power Group	[Taishan events]	[RSS]
Trillo	0	0	Iberdrola	[Trillo events]	[RSS]
Turkey Point	1	1	NextEra Energy	[Turkey Point events]	[RSS]
Vandellos	0	0	Endesa	[Vandellos events]	[RSS]
Victoria	0	0	Exelon	[Victoria events]	[RSS]
Vogtle	2	0	Southern Nuclear	[Vogtle events]	[RSS]
Waterford	2	1	Entergy	[Waterford events]	[RSS]
Watts Bar	0	0	Tennessee Valley Authority	[Watts Bar events]	[RSS]
Wolf Creek	0	1	Wolf Creek Nuclear Operating Corporation	[Wolf Creek events]	[RSS]
Zaporizhzhia	0	0	Enerhodar	[Zaporizhzhia events]	[RSS]

by Reactor type - 10 Years

type (#)	# (ratio)	list	feed
Advanced Boiling Water Reactor (0)	0 (0)	[Advanced Boiling Water Reactor events]	[RSS]
B&W-L-LP (5)	9 (1.8)	[B&W-L-LP events]	[RSS]
B&W-R-LP (1)	6 (6)	[B&W-R-LP events]	[RSS]
CANDU (4)	0 (0)	[CANDU events]	[RSS]
CANDU-6 (1)	0 (0)	[CANDU-6 events]	[RSS]
CANDU-9 (0)	0 (0)	[CANDU-9 events]	[RSS]
CE (10)	35 (3.5)	[CE events]	[RSS]
CP0 (0)	0 (0)	[CP0 events]	[RSS]
CP1 (2)	0 (0)	[CP1 events]	[RSS]
CP2 (0)	0 (0)	[CP2 events]	[RSS]
Economic and Simplified Boiling Water Reactor (0)	0 (0)	[Economic and Simplified Boiling Water Reactor events]	[RSS]
Evolutionary Power Reactor (4)	0 (0)	[Evolutionary Power Reactor events]	[RSS]
GE Pool (2)	0 (0)	[GE Pool events]	[RSS]
GE-1 (1)	0 (0)	[GE-1 events]	[RSS]
GE-2 (2)	10 (5)	[GE-2 events]	[RSS]
GE-3 (7)	14 (2)	[GE-3 events]	[RSS]
GE-4 (13)	36 (2.8)	[GE-4 events]	[RSS]
GE-5 (5)	13 (2.6)	[GE-5 events]	[RSS]
GE-6 (5)	32 (6.4)	[GE-6 events]	[RSS]
P4 REP 1300 (2)	0 (0)	[P4 REP 1300 events]	[RSS]
Pool (5)	0 (0)	[Pool events]	[RSS]
TRIGA (1)	0 (0)	[TRIGA events]	[RSS]
TRIGA Mark I (10)	0 (0)	[TRIGA Mark I events]	[RSS]
TRIGA Mark II (4)	0 (0)	[TRIGA Mark II events]	[RSS]
TRIGA Mark III (2)	0 (0)	[TRIGA Mark III events]	[RSS]
VVER-1000 (4)	0 (0)	[VVER-1000 events]	[RSS]
W-AP1000 (1)	1 (1)	[W-AP1000 events]	[RSS]
Westinghouse PWR 2-Loop (4)	9 (2.3)	[Westinghouse PWR 2-Loop events]	[RSS]
Westinghouse PWR 3-Loop (13)	42 (3.2)	[Westinghouse PWR 3-Loop events]	[RSS]
Westinghouse PWR 4-Loop (20)	82 (4.1)	[Westinghouse PWR 4-Loop events]	[RSS]