Report a Safety Concern
Search

The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

Home Site Help

NRC Site Search: Search All Sites

Filter by Document Type

Sort Documents by

Diablo Canyon Power Plant, Unit 1

Location: Avila Beach, CA (12 miles WSW of San Luis Obispo, CA); Region IV; Type: Westinghouse Four-Loop; Licensed MWt: 3304

Diablo Canyon Power Plant, Unit 2

Location: Avila Beach, CA (12 miles WSW of San Luis Obispo, CA); Region IV; Type: Westinghouse Four-Loop; Licensed MWt: 3468

Forwards supplemental info re performance testing of relief & safety valves,per NUREG-0737,Item II.D.1.Items 2,3 & 5 of 841127 ltr discussed.Addl info re Item 1 will be supplied at later date.

REGUlAT INFORMATiON DISTRIBUTION~STEM (RIDS)AOCESSION. NBRe 8503190456", DOC+ DATE.I 85/03/13 NOTARI'ZED: NO DOOKETI5FACIL::50 2VS Diab=lo Canyon Nuclear Power PlantrUnit" 1~. PacificGa"05000275'0323 Diablo, Canyon Nuclear Power» Planti Unit2'i,PacificGa» 05000323.AUTH',NAME"=...

Comments on util 790914 & 1228 submittals re moderate energy line breaks.Info responds to NRC request to evaluate plant design for effects of line breaks on equipment required for safe shutdown.Shield barrier requirements eliminated.

i+J..REGULATORY FORMATION DISTRIBUTION'SYM (RIDS)ACCESSION NBR:8306210111 DOC DATE: 83/06/15 NOTARI'ZED: NODOGKET'FACIL:50-275 Diablo Canyon Nuclear Power 'Plantr Unit iiPacific"Ga Q500027550-323 Diablo Canyon Nuclear Power Plantr Uni,t 2i. Pacific Ga 05000323AUTH'AME'UTHOR A...

Forwards revs to EPIPs including rev 5 to EP RB-15, "PASS" & rev 10 to EP EF-6, "Operation of EARS."

CATEGORY 1REGULAT% INFORMATION DISTRIBUTIONRYSTEM (RIDE)ACCESSION NBR:9609120063 DOC.DATE: 96/09/04 NOTARIZED: NOFACILx&0-'t?'15 Diablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga50-323 Diablo Canyon Nuclear Power Plant, Unit 2,. Pacific GaAUTH. NAME AUTHOR AFFILIATIONMOLDE...

Request for certification to ASLAB of ASLB 811228 memorandum & order disclaiming jurisdiction over effects of earthquakes on emergency planning.

. . --'7 _ ,,. ..-,UNITED STATES OF AMERICA*DOCKETEDNUCLEAR REGULATORY COMMISSION UgncBEFORE THE ?.TOMIC SAFETY AND LICENSING BOAR'82 SN -7 P214)C=!C; y MrIn the Matter of)CM: g),1j.,PACIFIC GAS AND ELECTRIC COMPANY) Docket Nos. 50-275 0.L.) 50-323 .(Diablo Canyon Nuclear Powe...

Forwards "DCNPP Thermal Effects Monitoring Program Analysis Rept Chapter 2 - Assessment of Thermal Effects," for review. Rept evaluates observed changes contained within Chapter 1, "Changes in Marine Environ."

REGULATE Y INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9811130107 DOC.DATE: 98/11/05 NOTARIZED: NO DOCKET IFACIL:50-275 Diablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga 0500027550-323 Diablo Canyon Nuclear Power Plant, Unit 2, Pacific Ga ,05000323AUTH.NAME AUTHOR ...

Petitioner's Motion to Hold the Case In Abeyance 2-11-16.

1 ORAL ARGUMENT NOT YET SCHEDULED IN THE UNITED STATES COURT OF APPEALS FOR THE DISTRICT OF COLUMBIA CIRCUIT Friends of the Earth, Petitioner, v. United States Nuclear Regulatory Commission, United States of America, Respondents. ) ) ) ) ) ) ) ) ) ) ) ) N...

Forwards "Site-Specific Offsite Radiological Emergency Preparedness Alert & Notification Sys QA Verification." Alert & notification sys meet NUREG-0654 requirements & acceptable.

l~~ M~OC~CtC AFederal EmergencyManagementWashington, D.C. 20472NN-tSeg+~Jfr,,wAgencyMr. William J. DircksExecutive Director for OperationsU.S. Nuclear Regulatory CommissionWashington, D.C. 20555Dear Mr. Dircks:The Federal Emergency Management Agency (FEMA) has completed an ana...

Letter informing that PG&E has met the commitment specified in the SE for LA 143 to perform a cycle-specific cladding corrosion analysis for Zirc-4 for Unit 1, Cycle 11.

Pacific Gas and "Electric Company David H. Oatley Diablo Canyon Power Plant Vice President-Diablo Canyon P0. Box 56 Operations and Plant Manager Avila Beach, CA 93424 November 9, 2000 805.545.6000 PG&E Letter DCL-00-141 U.S. Nuclear Regulatory Commission ATTN: Document Control...

Comments on draft NUREG-1032, "Evaluation of Station Blackout Accidents at Nuclear Power Plants." Potentially expensive backfits for station blackout event cannot be justified.

PAC I PIC GA 8 AND ELECTRICCOMPANY~ ~ ( P ( (Ps$~"~ 'L'tA~,N' ~ ~ i/I ~~ 4e II ~ 4 ~ ~ S ~ ~ ~Hovemher 5, 1985PCvndE Letter No.:DCL-85-33ohfr. Harold R. Benton, Dfrector"fficeof Nuclear Reactor RegulationU. S. Huclear Regulatory CommissionWashington, D.C. 20555Re: Docket Ho. 5...

Comment on NUREG-1150 re adequacy of EPZ surrounding plant. Statements of uncertainty in rept disturbing given plant- specific factors,including Hosgri fault,sparse road network & lack of protection from surrounding bldgs in emergency.

REGUL i ORY INFORMATION DISTR IHU'YSTEM (RIDS)ACCESSION NOR: 8710i30324 DOC. DATE: 87/09/30 NOTARIZED: NO DOCKET 0'ACIL:50-275 Diablo Canyon Nuclear Poeer Planti Unit 1> Pacific Ga 0500027550-323 Diablo Canyon Nuclear Poujer Planti Unit 2i Pacific Ga 05000323AUTH. NAME AUTHOR ...

Brief in support of 820916 exceptions to ASLB 820831 initial decision authorizing full power OL.Certificate of Svc encl.

;, .-..f00CKETEDU3!!RC.- UNITED STATES OF AMERICA- -'NUCLEAR REGULATORY COMMISSION 82 NTi 12 A11 :25BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL BOARD)In the Matter of))PACIFIC GAS AND ELECTRIC COMPANY) Docket Nos. 50-275 O.L.) 50-323 0.L.(Diablo Canyon Nuclear Power)Plant, U...

Responds to request for info re existing spent fuel racks. Values for peak decay heat load & max spent fuel pool temp for existing spent fuel pool racks calculated using assumptions & methodology used in rerack rept.

REGULA Y INFORNATION DISTRIBUTI YSTEN (BIDS)ACCESSION NBR: 85i2300057 DOC. DATE: 85/12/20 NOTARIZED: NOFACIL: 50-275 Diablo Canyon Nuclear Power Plant> Unit ii Pacific Ga50-323 Diablo Canyon Nucleav Power Plant> Unit 2i Pacific GaAUTH. NAl'lE AUTHOR AFFILIATIONSHIFFER> J D Pac...

Special Request for Alternate Requalification Program for Bruce A. Lewis

deyi HDiablo Canyon Power Plant Vice President-Diablo Canyon P.. Box 56 Opea Aions and Plant Manager Avila Beach, CA 93424 805,545.6000 March 27, 2000 PG&E Letter No. DCL-00-045 Ellis W. Merschoff, Regional Administrator U.S. Nuclear Regulatory Commission, Region IV 611 Ryan P...

Forwards affidavits for responses to Govt Accountability Project allegations addressed in util 840430,0517 & 29 ltrs.

REGULATO INFORMATION DISTRIBUTION TEM (AIDS)ACCESSION NBR;80071000rl8 DOC e DATE: 84/07/03 NOTARIZED: YES DOCKETFACIL:50-275 Diablo Canyon Nuclear Power Plant< Unit ii Pac)f)c Ga 0500027550 323 Diablo Canyon Nuclear Power. Planti Unit 2i Pacific Ga 05000323AUTH,NAME AUTHOR AFF...

Affidavit of RC Anderson,JB Hoch,GH Moore,MR Tresler & WH White.Design verification program findings prove no sys, structure or component would fail to perform intended safety function.Prof qualifications encl.

y's-1 UNITED STATES OF AMERICA2 NUCLEAR REGULATORY COMMISSION34 BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL BOARD5678)In the Matter of)Docket No. 50-2759 )PACIFIC GAS AND ELECTRIC)10 COMPANY)(Low Power Proceeding))11 (Diablo Canyon Nuclear Power)Plant, Unit No. 1))12)131415 ...

Forwards response to request for addl info re plant staff experience.Experience requirements endorsed in Generic Ltr 86-14 met based on util evaluation of encl data.

_ _ - _f);<,fIA, , , -MENLog # TXX-89858n.O. .:"" File # 10305, 913.1-O C10035 (GL 86-14)ggg[gg7g/CRef. # 10CFR2.102(a)'_ December 28, 1989,William J. Caldil, Jr.Executive We Pres. tent'!U. S.' Nuclear Regulatory Commission,Attn: Document Control DeskWashington, D. C. 20555"'|...

Submits contentions re motion for license to load fuel & conduct low power testing.Neither short nor long-term requirements of NUREG-0694 nor implementation measures sufficient.Certificate of Svc encl.

UNITED STATES OF AMERICANUCLEAR REGULATORY COMMISSIONBEFORE THE ATOMIC SAFETY AND LICENSING BOARDQ,Qp~~NREMC~pOre~~aIn. the Matter ofPACIFIC GAS AND ELECTRIC COMPANY(Diablo Canyon Nuclear PowerPlant, Units 1 and 2)))))Docket, Nos. 50-275 O.L.)50-323 O.L.))))~Pl~DfT)STATEMENT O...

Forwards Safeguards Insp Repts 50-275/86-24 & 50-323/86-24 on 860825-0903.No violations noted.Encl withheld (ref 10CFR73.21).

e--,.q- !_. x_rf .-,n , .p, .:, .'4> *>.'"-. ,. . .'SAFEGUA RDS INFORMATION'<.''OCT 03g586>.y > --2-, ,,,.-. .t+.. . ,'~~Enclosure:' Inspection Report Nos. 50-275/86-24 and 50-323/86-24 (IE-V-769)~'cc w/ enclosure:R.C. Thornberry, PG&E (Diab...

PNO-V-85-040:on 850708,licensee informed region that site unaffected by current brush fires.On 850707,fire caused 45 minute outage to emergency notification sys.

,., -N~PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-85-40 Date: 07/08/85'This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or publicinterest significance. The information presented is as initially received.without verificatio...

Forwards 1997 annual radioactive effluent release rept IAW 10CFR50.36a(a)(2) & Section 6.9.1.6 of plant Tech Specs.One diskette being sent w/rept,containing required meteorological data.

CATEGORY 1REGULAT Y INFORMATION DISTRIBUTIO SYSTEM (RIDS)ACCESSION NBR:9805050042 DOC.DATE: 98/04/30 NOTARIZED: NOFACIL:50-275 Diablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga50-323 Diablo Canyon Nuclear Power Plant, Unit 2, Pacific GaAUTH.NAME AUTHOR AFFILIATIONPOWERS,R....

Response to Commission Order CLI-84-4 re potential consideration of complicating effects of earthquakes on emergency planning.Certificate of Svc encl.

. _ _ _ _ _ _D~. ..1'..1UNITED STATES OF AMERICA'00CMETEDUSHRC2NUCLEAR REGULATORY COMMISSIONN IblY-4 gh:|'p3BEFORE THE COMMISSION4r.re_,, ,5 =In the Matter of)6) Docket Nos. 50-275 O/_.PACIFIC GAS AND' ELECTRIC COMPANY) 50-323(Diablo Canyon Nuclear Power Plant )8Units 1 and 2)...

NRC Staff Brief in Opposition to FOE's Appeal of LBP-15-27.

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE COMMISSION In the Matter of ) ) PACIFIC GAS & ELECTRIC COMPANY ) Docket Nos. 50-275 ) 50-323 (Diablo Canyon Nuclear Power Plant, ) Units 1 and 2) ) NRC STAFF BRIEF IN OPP...

Forwards public version of revised EPIPs,including Rev 6 to EP R-3, "Release of Radioactive Liquids" & Rev 7 to EP R-7, "Off-Site Transportation Accident."

, ~A'ELERATED DISTRIBUTION DEMONSTPWTION SYSTEMREGULRTOO INFORMATION DISTRIBUTION%STEM(RIDE)ACCESSRIN NBR:9011010245 DOC.DATE: 90/10/30 NOTARIZED: NO DOCKETFACIL:50-275 Diablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga 0500027550-323 Diablo Canyon Nuclear Power Plant, Unit...

Requests one-time exemption for 10CFR50.71(e)(4) to allow rev 11 of FSAR Update to be filed 9 months,rather than 6 months,after completion of Unit 2 7th refueling outage.Time needed to ensure FSAR Update complete & accurate.

CATEGORY 1.REGULA'Y INFORMATION DISTRIBUTIO SYSTEM (RIDS)ACCESSION NBR:9605140124 DOC.DATE: 96/05/07 NOTARIZED: NO DOCKET'ACIL:50-275 Diablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga 0500027550-323 Diablo Canyon Nuclear Power Plant, Unit 2, Pacific Ga 05000323AUTH.NAME AU...

Statement of work for plant independent design verification program.

_ - - _ - _ _ _ _ _ -_ , __6'].p''' *'. j* d','.,Project Title: Diablo Canyon VerificationP.3)PROJECT DESCRIPTION1. OBJECTIVE OF PROPOSED WORKa.Background)On September 28, 1981 PG&E reported that a diagram error had been found in aportion of the seismic qualification of the Di...