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 55078	20 January 2021 23:22:00	Saint Lucie	NRC Region 2
ENS 55038	16 December 2020 13:51:00	Harris	NRC Region 2
ENS 55030	11 December 2020 18:04:00	Grand Gulf	NRC Region 4
ENS 55028	10 December 2020 22:08:00	Arkansas Nuclear	NRC Region 4
ENS 54996	13 November 2020 07:45:00	Limerick	NRC Region 1
ENS 54995	12 November 2020 22:32:00	Vogtle	NRC Region 2
ENS 54986	6 November 2020 08:39:00	Grand Gulf	NRC Region 4
ENS 54978	2 November 2020 10:19:00	Waterford	NRC Region 4
ENS 54888	8 September 2020 13:25:00	Catawba	NRC Region 2
ENS 54859	26 August 2020 18:19:00	Prairie Island	NRC Region 3
ENS 54855	25 August 2020 04:05:00	Grand Gulf	NRC Region 4
ENS 54844	19 August 2020 17:25:00	Turkey Point	NRC Region 2
ENS 54826	10 August 2020 17:58:00	Duane Arnold	NRC Region 3
ENS 54725	25 May 2020 09:33:00	Grand Gulf	NRC Region 4
ENS 54708	13 May 2020 06:08:00	Sequoyah	NRC Region 2
ENS 54691	3 May 2020 12:21:00	Susquehanna	NRC Region 1
ENS 54663	13 April 2020 19:50:00	Millstone	NRC Region 1
ENS 54631	1 April 2020 20:25:00	Millstone	NRC Region 1
ENS 54599	23 March 2020 14:13:00	Harris	NRC Region 2
ENS 54523	12 February 2020 23:00:00	Catawba	NRC Region 2
... further results

Manual Scram

	Start date	Site	Region
ENS 54976	1 November 2020 10:34:00	Cooper	NRC Region 4
ENS 54885	5 September 2020 02:42:00	Cook	NRC Region 3
ENS 54849	21 August 2020 14:18:00	River Bend	NRC Region 4
ENS 54847	21 August 2020 03:54:00	Turkey Point	NRC Region 2
ENS 54839	18 August 2020 01:13:00	Turkey Point	NRC Region 2
ENS 54834	13 August 2020 13:38:00	Harris	NRC Region 2
ENS 54824	8 August 2020 06:27:00	Grand Gulf	NRC Region 4
ENS 54795	21 July 2020 09:35:00	Browns Ferry	NRC Region 2
ENS 54794	20 July 2020 18:25:00	Browns Ferry	NRC Region 2
ENS 54789	17 July 2020 20:46:00	Diablo Canyon	NRC Region 4
ENS 54740	6 June 2020 13:20:00	Seabrook	NRC Region 1
ENS 54731	29 May 2020 18:03:00	Seabrook	NRC Region 1
ENS 54611	25 March 2020 16:40:00	Davis Besse	NRC Region 3
ENS 54607	25 March 2020 04:56:00	Salem	NRC Region 1
ENS 54597	22 March 2020 16:55:00	Brunswick	NRC Region 2
ENS 54562	4 March 2020 17:05:00	Nine Mile Point	NRC Region 1
ENS 54546	25 February 2020 20:30:00	Univ Of New Mexico	NRC Region 0
ENS 54532	19 February 2020 14:36:00	Watts Bar	NRC Region 2
ENS 54525	14 February 2020 05:25:00	Susquehanna	NRC Region 1
ENS 54460	1 January 2020 18:53:00	Comanche Peak	NRC Region 4
... further results

by site - 24 months

Site	#Man	#Auto	Company	Event lists
Arkansas Nuclear	0	2	Entergy	[Arkansas Nuclear 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	1	Exelon	[Braidwood events]	[RSS]
Browns Ferry	2	2	Tennessee Valley Authority	[Browns Ferry events]	[RSS]
Brunswick	2	1	Duke Energy	[Brunswick events]	[RSS]
Byron	0	0	Exelon	[Byron events]	[RSS]
Callaway	0	0	Ameren	[Callaway events]	[RSS]
Calvert Cliffs	0	0	Exelon	[Calvert Cliffs events]	[RSS]
Catawba	0	2	Duke Energy	[Catawba events]	[RSS]
Chernobyl	0	0		[Chernobyl events]	[RSS]
Clinton	0	1	Exelon	[Clinton events]	[RSS]
Columbia	0	0	Energy Northwest	[Columbia events]	[RSS]
Comanche Peak	1	0	Luminant	[Comanche Peak events]	[RSS]
Cook	2	0	American Electric Power	[Cook events]	[RSS]
Cooper	1	0	Entergy	[Cooper events]	[RSS]
Davis Besse	1	0	Cleveland Electric	[Davis Besse events]	[RSS]
Diablo Canyon	1	0	Pacific Gas & Electric	[Diablo Canyon events]	[RSS]
Dresden	0	1	Exelon	[Dresden events]	[RSS]
Duane Arnold	1	1	NextEra Energy	[Duane Arnold events]	[RSS]
Dungeness	0	0	EDF Energy	[Dungeness events]	[RSS]
Farley	2	0	Southern Nuclear	[Farley events]	[RSS]
Fermi	0	0	DTE Energy	[Fermi events]	[RSS]
FitzPatrick	0	1	Exelon	[FitzPatrick events]	[RSS]
Ginna	0	0	Exelon	[Ginna events]	[RSS]
Grand Gulf	2	5	Entergy	[Grand Gulf events]	[RSS]
Harris	1	2	Duke Energy	[Harris events]	[RSS]
Hartlepool	0	0	EDF Energy	[Hartlepool events]	[RSS]
Hatch	1	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	1	0	PSEG	[Hope Creek events]	[RSS]
Hunterston	0	0	EDF Energy	[Hunterston events]	[RSS]
Indian Point	0	2	Entergy	[Indian Point events]	[RSS]
LaSalle	0	0	Exelon	[LaSalle events]	[RSS]
Lee	0	0	Duke Energy	[Lee events]	[RSS]
Limerick	1	1	Exelon	[Limerick events]	[RSS]
McGuire	0	1	Duke Energy	[McGuire events]	[RSS]
Millstone	1	2	Dominion	[Millstone events]	[RSS]
Monticello	0	0	Xcel Energy	[Monticello events]	[RSS]
Nine Mile Point	2	1	Exelon	[Nine Mile Point events]	[RSS]
Nogent	0	0	Électricité de France	[Nogent events]	[RSS]
North Anna	1	0	Dominion	[North Anna events]	[RSS]
Oconee	0	0	Duke Energy	[Oconee events]	[RSS]
Palisades	0	0	Entergy	[Palisades events]	[RSS]
Palo Verde	0	1	Arizona Public Service	[Palo Verde events]	[RSS]
Peach Bottom	1	0	Exelon	[Peach Bottom events]	[RSS]
Perry	0	2	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	0	1	Exelon	[Quad Cities events]	[RSS]
River Bend	2	0	Entergy	[River Bend events]	[RSS]
Robinson	0	1	Duke Energy	[Robinson events]	[RSS]
Saint Lucie	0	2	NextEra Energy	[Saint Lucie events]	[RSS]
Salem	3	0	PSEG	[Salem events]	[RSS]
Seabrook	2	0	NextEra Energy	[Seabrook events]	[RSS]
Sequoyah	1	2	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]
Summer	0	0	South Carolina Electric & Gas Company	[Summer events]	[RSS]
Surry	0	0	Dominion	[Surry events]	[RSS]
Susquehanna	1	1	Talen Energy	[Susquehanna events]	[RSS]
Turkey Point	3	1	NextEra Energy	[Turkey Point events]	[RSS]
Vogtle	1	2	Southern Nuclear	[Vogtle events]	[RSS]
Waterford	0	2	Entergy	[Waterford events]	[RSS]
Watts Bar	3	0	Tennessee Valley Authority	[Watts Bar events]	[RSS]
Wolf Creek	0	0	Wolf Creek Nuclear Operating Corporation	[Wolf Creek events]	[RSS]

by Reactor type - 10 Years

type (#)	# (ratio)	list	feed
B&W-L-LP (5)	8 (1.6)	[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]
CE (10)	46 (4.6)	[CE events]	[RSS]
GE-1 (1)	0 (0)	[GE-1 events]	[RSS]
GE-2 (2)	18 (9)	[GE-2 events]	[RSS]
GE-3 (5)	22 (4.4)	[GE-3 events]	[RSS]
GE-4 (12)	59 (4.9)	[GE-4 events]	[RSS]
GE-5 (4)	15 (3.8)	[GE-5 events]	[RSS]
GE-6 (4)	40 (10)	[GE-6 events]	[RSS]
Pool (2)	0 (0)	[Pool events]	[RSS]
TRIGA (5)	0 (0)	[TRIGA events]	[RSS]
TRIGA Mark I (2)	0 (0)	[TRIGA Mark I events]	[RSS]
TRIGA Mark II (2)	0 (0)	[TRIGA Mark II events]	[RSS]
W-AP1000 (1)	0 (0)	[W-AP1000 events]	[RSS]
Westinghouse PWR 2-Loop (4)	14 (3.5)	[Westinghouse PWR 2-Loop events]	[RSS]
Westinghouse PWR 3-Loop (9)	44 (4.9)	[Westinghouse PWR 3-Loop events]	[RSS]
Westinghouse PWR 4-Loop (20)	115 (5.8)	[Westinghouse PWR 4-Loop events]	[RSS]