Main transformer failure
Main transformer failure# QUERY73c4d12cd6feff03277fbc62d62911eb
Main transformer failure# QUERY24d3290afef67ac13b6615771896c256
Main transformer failure# QUERYe5d77ce6c8fdb05f4f9a447cd6843617
Main transformer failure# QUERY53168111fd1f049b8d1d0785f44209e4
Main transformer failure# QUERYaaeb40fe06ab8309b058cf6e90e4ba42
Main transformer failure# QUERY9da95d0382f828194951811b643e4ac3
Main transformer failure# QUERY51df69973208531c89f701120c5bedf7
Main transformer failure Beaver Valley
Main transformer failure# QUERY89c9f21f5cdfe0c08c50d0ed94c9967d
Main transformer failure# QUERY7ad40805fa14ea29beb65edc049512b8
Main transformer failure Calvert Cliffs
Main transformer failure# QUERYf532bd47c3bce8b9504a02878d12b5cd
Main transformer failure# QUERY95ee98288912445dee51af09fb96eb05
Main transformer failure FitzPatrick
Main transformer failure# QUERY2cbe93a34f1d647f1e301a978faff0f3
Main transformer failure# QUERYff19197a009cc6fcf64fb09ac72acc25
Main transformer failure Ginna
Main transformer failure# QUERY2fd0cf491d0a45eb8f549f80728faeaa
Main transformer failure# QUERYc13b475b845e05bbeb5b62e4c4c934ee
Main transformer failure Hope Creek
Main transformer failure# QUERYf6974e92369c2409903cae2ac2ffe636
Main transformer failure# QUERY25e3c4f68ab92cfa86553966e36c9a18
Main transformer failure Indian Point
Main transformer failure# QUERY34b32d2f652effa7d02be0449ed2b8f8
Main transformer failure# QUERY4cbbf9ec4412380dd2d2c5c809e0fb1d
Main transformer failure Limerick
Main transformer failure# QUERYcfc37a3df5ccad3fbcdf584433741dd1
Main transformer failure# QUERYd725a7b9c674a652c4a430e6fab94f2a
Main transformer failure Millstone
Main transformer failure# QUERYcf03d4dd392820369b81049b1c9ce475
Main transformer failure# QUERY91acd5b82b00296b71547b911674d17f
Main transformer failure Nine Mile Point
Main transformer failure# QUERY6e094f34e5f5fa5875cab66903dbc1ed
Main transformer failure# QUERY71271f3ef7295915fe15497b7796ea81
Main transformer failure Peach Bottom
Main transformer failure# QUERYb9e1e9c067ab1ee23bb2623d1459f517
Main transformer failure# QUERY2685df97d3d6953d7f037edb51227734
Main transformer failure Salem
Main transformer failure# QUERYe381e66b2d3c24b000113407be9609a2
Main transformer failure# QUERYcd30fcf4b647d9db43f06e86a78ee846
Main transformer failure Seabrook
Main transformer failure# QUERYe346a27c3fc71cfcc4595f77539e50d0
Main transformer failure# QUERY4e3483cb7f0634e8ce07fc7c0b81d809
Main transformer failure Susquehanna
Main transformer failure# QUERY43d36fe7449ee3ba7df55aee3978d13e
Main transformer failure# QUERY1ef3e525d13482e30d2249af4a2ec148
NRC Region 1 false
Main transformer failure# QUERY7a67bed0767cfcf0d82172f65aac0556
Main transformer failure Haddam Neck
Main transformer failure# QUERY1b1f621e4336d8f269634bed0b2cb3c5
Main transformer failure# QUERYed5250da0f821d744b68741f2c6094d1
Main transformer failure Maine Yankee
Main transformer failure# QUERY34cad6cb94a643ccaf92bcbd8770c43f
Main transformer failure# QUERYd9a77b4cf79176cb1b15ca09bf267a47
Main transformer failure Oyster Creek
Main transformer failure# QUERY740836b925b70cc95d49245b8594cb98
Main transformer failure# QUERY1b9e621def8ea23c9a283a1680e63dba
Main transformer failure Pilgrim
Main transformer failure# QUERYd61a378a1d1fb489183eb69552aafe25
Main transformer failure# QUERYbd9115b1d69c88c4f2321bf34a64ae7c
Main transformer failure Saxton
Main transformer failure# QUERYc7fc55be3199cd0dce15295f8bdaaa9e
Main transformer failure# QUERY5b1ee5d75d11fba4358cc5e1a44349ce
Main transformer failure Shoreham
Main transformer failure# QUERY2e2940f27eea9acf7cd16b499526d5c3
Main transformer failure# QUERY64b6316a54d66190f8ccdf6c6afee163
Main transformer failure Three Mile Island
Main transformer failure# QUERY8fcc16cfc5a69aca2c75149cf77af377
Main transformer failure# QUERYa94c6bc941d78d755aef2474f93edd30
Main transformer failure Vermont Yankee
Main transformer failure# QUERY218052f7f1ca4f1e6f279f25bdddabab
Main transformer failure# QUERY9e613d6b09a5ea51418fb640a52b9207
Main transformer failure Zion
Main transformer failure# QUERYea63201f54c71292ca4b6130754224f0
Main transformer failure# QUERY6686ff349df49997429ca264b496e0f3
NRC Region 1 true
Main transformer failure# QUERYa3013f81b2c3556f952fc20ebfb722f7
Main transformer failure Browns Ferry
Main transformer failure# QUERYc81efb30e922fa3ab136b459717434d2
Main transformer failure# QUERYffdfe847d70afabda469f950e46d8506
Main transformer failure Brunswick
Main transformer failure# QUERY24b5c29c92bf6eb8b46ef989499ca504
Main transformer failure# QUERYcf67ff4f61524485267a821321629806
Main transformer failure Catawba
Main transformer failure# QUERYd1d8a8dd036a671790c6f46960e5c60d
Main transformer failure# QUERY0182b74c198f2884f8522e6d5cc16e2c
Main transformer failure Farley
Main transformer failure# QUERYfa5c8b89fe5cc2fba3790abaf40de36f
Main transformer failure# QUERY73bf66b126cb9e63d3a225a5809b7214
Main transformer failure Harris
Main transformer failure# QUERYe1eca1d42da8ab870bc4dc4c4eddf7ee
Main transformer failure# QUERYa6e1e41bcf6eed85bebbf41422fe91fe
Main transformer failure Hatch
Main transformer failure# QUERY39a44fbac136ea39b246e86feace3299
Main transformer failure# QUERY80e0cd02689bb0b3043045d06f594f0c
Main transformer failure Lee
Main transformer failure# QUERY856fd649063b79e7edfff1be5593896f
Main transformer failure# QUERY6a14eef04e1a8eedd8ecc840e60768de
Main transformer failure McGuire
Main transformer failure# QUERY6f3225e95d4564d165d297f706f043f3
Main transformer failure# QUERY0ab5fa5bc10c1e2423967046f5659cb3
Main transformer failure North Anna
Main transformer failure# QUERY149137234ddb41ee1482f6472f18dbfe
Main transformer failure# QUERY882e52f2843e828cfad4afd52393aea9
Main transformer failure Oconee
Main transformer failure# QUERY5f24ee9562d91062e3490380e16c3969
Main transformer failure# QUERY03041d6231f94c027117230124ebc7bc
Main transformer failure Robinson
Main transformer failure# QUERY068575b06175e7cec627958807308dc7
Main transformer failure# QUERYecf23c823bb14b4a77248ebbe56891af
Main transformer failure Saint Lucie
Main transformer failure# QUERY3cb0722b51adbecf0095f85d0328fcd3
Main transformer failure# QUERYdecb791066125f6dc5ba9fca3d297a9b
Main transformer failure Sequoyah
Main transformer failure# QUERY6d958e8ecff2457767de9f62b57323e6
Main transformer failure# QUERY8c4fb70e10c0ce54ac1b5707c5d82aa9
Main transformer failure Summer
Main transformer failure# QUERYa1e991a87795908240e173b6ca55c266
Main transformer failure# QUERY3548462c6e3de1d55e33a67e7f96dd8f
Main transformer failure Surry
Main transformer failure# QUERY45e6d12ffb096a2820f7f1d5e6d856e0
Main transformer failure# QUERY0260f6231707410c6b92a290ea1c8e87
Main transformer failure Turkey Point
Main transformer failure# QUERY45823bb311ff0d9ce7809e8dc0f5d478
Main transformer failure# QUERY2fc7c733b027836a4e83846282345368
Main transformer failure Vogtle
Main transformer failure# QUERY09bfe35c86f6a8f7ff7807faf48ef37c
Main transformer failure# QUERYc41ef7d3020d1f479d9b12614dab889f
Main transformer failure Watts Bar
Main transformer failure# QUERYae4788bd91560bf41bfde4180c3cc8f2
Main transformer failure# QUERYadb822ab7989da7f1b1f9ab0b67c9f11
NRC Region 2 false
Main transformer failure# QUERYef2ed89eccc51cc609623ec1f2ae0e81
Main transformer failure Crystal River
Main transformer failure# QUERYe6f9baff4b6913cae4717fbd1f02ce4c
Main transformer failure# QUERY9d0f8b82d297790bf3d71e37d0c896cf
NRC Region 2 true
Main transformer failure# QUERY03a4ee5432c9daa6cecac06e7884f24d
Main transformer failure Braidwood
Main transformer failure# QUERY388b0399c09e1dec7b1faf550ab6d7a1
Main transformer failure# QUERY519d95ad65b50a2cd6205ba26715f472
Main transformer failure Byron
Main transformer failure# QUERY79a3dc8117fa106ff5a66da639fdfaf4
Main transformer failure# QUERYef6139f1d489d27e9414546caf2c66c4
Main transformer failure Clinton
Main transformer failure# QUERYbaefef964a4ca5654f70816f83110330
Main transformer failure# QUERY9c078a8edd717f2b055123b1af5ac4aa
Main transformer failure Cook
Main transformer failure# QUERYd595792a817494ae1bed5013521c079a
Main transformer failure# QUERY172f0e6b784606ec43e9b95d24f2aff6
Main transformer failure Davis Besse
Main transformer failure# QUERYebc434062bac91919f0af5964e67fc2b
Main transformer failure# QUERYa6aafd7bebcfc62a51d5edb14bd9690e
Main transformer failure Dresden
Main transformer failure# QUERYdba6ecc2a1cbf34bfe9a44dbb27c5d6c
Main transformer failure# QUERYccf24752c001d177d1674c8749fb0f3c
Main transformer failure Duane Arnold
Main transformer failure# QUERY690f60d3a588e9b005c8280abc601c4f
Main transformer failure# QUERYb28007b1c598af04b85dc8196dee192e
Main transformer failure Fermi
Main transformer failure# QUERYe841a5ce3e1089d6ff658284157727c2
Main transformer failure# QUERY9c9ad507bc534cfd98fbae463f6a81f4
Main transformer failure LaSalle
Main transformer failure# QUERY662cd84c147547f454cef0f64b1712cb
Main transformer failure# QUERY33933202d2aad3cb95af2d9dee008cdb
Main transformer failure Monticello
Main transformer failure# QUERY2fe17d7c98eee3beac9dd7863cd132cb
Main transformer failure# QUERYd1c37d719ec164397ace70c164847e3d
Main transformer failure Palisades
Main transformer failure# QUERY38116e96c6b226f55e021deed34fef61
Main transformer failure# QUERYfe5968ef54b7283bb8eea5bf35429c3f
Main transformer failure Perry
Main transformer failure# QUERYd1c6c06501253f0719eeda5c5f770fab
Main transformer failure# QUERYa05c09fb9507d8388c6a3ccb70b0e76f
Main transformer failure Point Beach
Main transformer failure# QUERY87831069b6f528d40c998e3a52f5ace6
Main transformer failure# QUERY4ca713df64f7a0dbde1ed33b98c567d3
Main transformer failure Prairie Island
Main transformer failure# QUERYd9a58fc03ea451c01fe59288eeb3659f
Main transformer failure# QUERYbd45f6d17dca08f4b5506f5b5ae99e5b
NRC Region 3 false
Main transformer failure# QUERY17d44176888b71912ab695a95185b945
Main transformer failure Kewaunee
Main transformer failure# QUERYd9909bbef382e2a992db49f4d259b7c3
Main transformer failure# QUERY58e33d8b0117f4f95be6a5b54aa6f133
Main transformer failure La Crosse
Main transformer failure# QUERY3eba5205ceaf70f60f4cb79e30484857
Main transformer failure# QUERY94ade575e504c30edf964e815a468cff
NRC Region 3 true
Main transformer failure# QUERY4b875cd2f5745a1db5699c9bf7b8b28c
Main transformer failure Arkansas Nuclear
Main transformer failure# QUERY8ba89679c091deebc12305e2685e6330
Main transformer failure# QUERYd6635bbba4714879b0afe3cc09c22174
Main transformer failure Callaway
Main transformer failure# QUERYee6a2ec5656874d69b904d30bb87dd8b
Main transformer failure# QUERY799e89ec581b3d5eb3f1d7b17ec73b06
Main transformer failure Columbia
Main transformer failure# QUERY30eeaa9bdbc1e44356c68cd0a6bc333c
Main transformer failure# QUERYdabc15a36af4b15b2f30ab6727c1f5e0
Main transformer failure Comanche Peak
Main transformer failure# QUERYd29c54f7ae4513b7e7fbae8816c6e406
Main transformer failure# QUERY0c8e349bd7f5c45f9679c82e0b1a58b8
Main transformer failure Cooper
Main transformer failure# QUERYd8d6d8651976aeb0ed68227a74c421cf
Main transformer failure# QUERY23ef8c22d88db3ffbdfba340699f9481
Main transformer failure Diablo Canyon
Main transformer failure# QUERYc184a4352889adb6099869265fbccb2f
Main transformer failure# QUERY82a50887b03b86a98543204d5d17ad3e
Main transformer failure Grand Gulf
Main transformer failure# QUERYf20faaf5d67e3db762cde84a1d562494
Main transformer failure# QUERY8b0b0da10ff28fce77b2910d5f31d571
Main transformer failure Palo Verde
Main transformer failure# QUERYe7edce657f3e74c68f6f4f9b55a6379c
Main transformer failure# QUERYe54c68529f96e9bcc8dd4afbd32a0a87
Main transformer failure Quad Cities
Main transformer failure# QUERY985ee0be11b6fe51531fd45f840ebb44
Main transformer failure# QUERY60897fdcf8cf3f561b83d1d1c84b5652
Main transformer failure River Bend
Main transformer failure# QUERY2afb96b28ea6d590a7c4f008fa079f66
Main transformer failure# QUERYa9c47f00315256b9ae7bd702f9d1d99e
Main transformer failure Waterford
Main transformer failure# QUERY799a1a5a228668cd8b38f03967943c62
Main transformer failure# QUERY68c3376714e87f68fd2712437c3952b2
Main transformer failure Wolf Creek
Main transformer failure# QUERY825c807e2de54a29207918eb2071261d
Main transformer failure# QUERY7836f522942ad3fc962a49da462ba910
NRC Region 4 false
Main transformer failure# QUERY2836896f439495127d76eeae8956a4dc
Main transformer failure Fort Calhoun
Main transformer failure# QUERYe05c5a77a7aafecce5f526bf7de6df29
Main transformer failure# QUERY4b53b931db12946266344071293d319c
Main transformer failure Fort Saint Vrain
Main transformer failure# QUERYaaf88e5be9ce011d9a1821243fe87847
Main transformer failure# QUERYc7efa75a57144387029747638d6cc705
Main transformer failure Hallam
Main transformer failure# QUERY5962f5b654d351ce62c3816384ad7f4f
Main transformer failure# QUERY45b3d9709ee592ab39c5c46abb706d79
Main transformer failure Humboldt Bay
Main transformer failure# QUERY85cca7c44316f4b0e898d1d9c8f378d4
Main transformer failure# QUERY69e70237338595a85d5a24503cd978a6
Main transformer failure Rancho Seco
Main transformer failure# QUERYbdf8e20c40728e02540ea5ae4c3fe50f
Main transformer failure# QUERY718051dc0aec506fda5abe1a6066ab8a
Main transformer failure San Onofre
Main transformer failure# QUERYee0e94d897aad03d277370234ab81660
Main transformer failure# QUERY6b7bbfb43beb9a1eddcaad2962024feb
Main transformer failure Trojan
Main transformer failure# QUERYb094be9464c582d548d7f8aa66a0758b
Main transformer failure# QUERY4ea9ad8e9c97d11613af268b01327bd8
NRC Region 4 true
Main transformer failure# QUERY3f48e2e2d298162fc4e22365ef7b7e59
Main transformer failure Shippingport
Main transformer failure# QUERY18d8ecd51c2e7471adabbafbcdd31867
Main transformer failure# QUERYa08ff30cd6f2305ec20d17036eb54611
Main transformer failure Yankee Rowe
Main transformer failure# QUERY6c96eae00d4daf33f220561f3be40c0f
Main transformer failure# QUERY4c37dc08f29bd05111c1885d9281ebd2
Main transformer failure Parr
Main transformer failure# QUERY2bdab70b9529ed6338a7485a1d002e63
Main transformer failure# QUERY30f6ecb735145ad1e52ff10d59d6587e
Main transformer failure Big Rock Point
Main transformer failure# QUERY7c792c7f12bad4f924a47ba0787b4751
Main transformer failure# QUERYbe2940a038af59e3989ccc3435a3185a
Main transformer failure Elk River
Main transformer failure# QUERYbb46ec606678c07d84c4716314c7e4c2
Main transformer failure# QUERY66b2475e00b2c4be212568e24e108f44
Main transformer failure South Texas
Main transformer failure# QUERY5bc8ebacbe440f5117b1e80dabd86566
Main transformer failure# QUERYc84ea5434a57ba8aa418c7995e466985
Main transformer failure Sundesert
Main transformer failure# QUERY0d7e9499ad075eea9a80757d393a212f
Main transformer failure# QUERY2253593dfdf222cf36ceb06666e0252d
Main transformer failure Victoria
Main transformer failure# QUERY14e1fd63737ed82b661e397cfbb4fb9a
Main transformer failure# QUERY77421f4b15f803e40b434e5b51330788
Main transformer failure 10
Main transformer failure# QUERY7af69f6b7547a347b34329ed75ac0820
Main transformer failure Clinch River
Main transformer failure# QUERYd7699629482830eb9fdd110674fe5f7c
Main transformer failure# QUERY1256ffc294d53abe3d77d0841a38b1d4
Main transformer failure Kemmerer
Main transformer failure# QUERY71817e21f038a14ad7439760e7251703
Main transformer failure# QUERY342c9649c4d34748a870a5b577ffcbc3
Information Notice 1982-53, Main Transformer Failures at North Anna Nuclear Power Station
Information Notice 1997-21, Availability of Alternate AC Power Source Designed for Station Blackout Event
Press Release-I-15-024, NRC Begins Special Inspection at Indian Point 3 Nuclear Power Plant to Review Issue Associated with Transformer Event on May 9
PNO-I-10-006, Notification of Alert Declared Due to Explosion as a Result of 21 Main Transformer Failure at Indian Point, Unit 2
PNO-I-09-001, Unusual Event and Automatic Reactor Scram Due to a Fire in the M1A Main Transformer at Oyster Creek Station
PNO-IV-08-007, Notice of Unusual Event at Diablo Canyon, Unit 2
NL-06-0540, Southern Nuclear Operating Co., 60-Day Response to Generic Letter 2006-02, Grid Reliability and Impact on Plant Risk and the Operability of Offsite Power
PNO-I-99-028, on 990608,Susquehanna Unit 2 Automatically Shut Down from 100% Power,Due to Failure in a Main Transformer. Region I Public Affairs Prepared to Respond to Media Inquires.Resident Inspectors on-site & Responded
IA-86-669, Partial Response to FOIA Request for Info Re Generic Safety Issues & Gimcs.Forwards App C Document.App B & C Documents Available in PDR
LD-88-005, Draft C-E Sys 80+TM Std Design, Design Certification Licensing Review Bases.Response to NRC Comments on Licensing Document Encl
PNO-I-15-002, A - Update - Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
05000219/LER-1989-016, :on 890625,main Generator Tripped Due to Phase Differential Condition Caused by Fault of Main Output Transformer.Caused by Equipment Failure.Failed Transformer Removed & Spare Installed
05000499/LER-1989-017, :on 890713,internal Fault Occurred in Main step-up Transformer 2A.Caused by Failure of Phase a High Voltage Bushing in Transformer.Transformer Returned to Mfg for Repair & Further Failure Analysis
05000245/LER-1986-027-01, :on 861130,reactor Scrammed Due to Main Transformer Fault,Resulting in Actuation of Generator Ground Relay & Causing Initiation of Turbine Trip Logic.Caused by Break in Winding Insulation
05000416/LER-1988-003, :on 880109,line Break Instrumentation for RHR a High Differential Pressure (Dp) Alarmed.Caused by Change in Normal Indication Dp Between LPCS & RHR a Injection Lines. Analysis Being performed.W880208 Ltr
05000219/LER-1992-005, :on 920503,reactor Scram & Subsequent Engineered Safety Features Sys Actuations Occurred Due to Turbine Load Rejection.Util Personnel Inspected Offsite Power Lines
05000278/LER-1991-001-02, :on 910116,reactor Scram Occurred Due to Turbine Control Valve Fast Closure on Main Generator Load Reject Signal Because of Main Transformer Sudden Pressure Lookout Signal.Caused by Component Failure
PNO-II-90-027, on 900522,plant Dual Shutdown Occurred Due to Transformer Failure.Cause of Failure Under Review.Both Units Will Remain in Hot Shutdown for Repairs to Transformers.No Personnel Injuries Sustained During Event
NUREG-0227, Partial Draft of Nuclear Power Plant Operating Experience - 1978, Section 3.0, Plant Outages. Portions of NUREG-0483, NUREG-0366 & NUREG-0227 (Plant Operating Experience for 1977,1976 & 1974-75,respectively) Encl
PNO-I-15-002A, Update - Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
PNO-I-15-002, Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
05000334/LER-2014-001, Regarding Beaver Valley Unit 1 Automatic Reactor Trip Due to Main Unit Transformer Failure
05000219/LER-2009-001, Automatic Reactor Shutdown Caused by Main Transformer Failure
05000219/LER-2008-001, Automatic Reactor Shutdown Caused by Main Transformer Failure
05000321/LER-2005-002, Re Main Transformer Failure Causes Turbine Trip and Reactor Scram
05000251/LER-2005-002, Regarding Automatic Reactor Trip Due to Main Transformer Failure
05000498/LER-1995-013, :on 951218,turbine Trip & Reactor Trip Occurred,Due to Main Transformer Lockout.Caused by Improper Maint Performance.Grounded Connection Repaired,Mgt Expectations Reinforced & Procedures Revised
05000499/LER-1994-007-02, :on 940625,main Transformer Lockout Relay Actuated.Caused by Failure of Capacitor within Pilot Wire Relay.Annunciator Response Procedures Have Been Revised & Faulty Pilot Wire Relay Was Replaced