|
---|
Category:AFFIDAVITS
MONTHYEARML20064D1961994-03-0404 March 1994 Affidavit of Mj Angus Re Motion to Reopen Record ML20057B0261993-08-0909 August 1993 Affidavit of non-disclosure in Support of Access to Excerpts from INPO Rept Re Maint & Surveillance Activities at Plant ML20057B0301993-08-0505 August 1993 Affidavit of non-disclosure in Support of Access to Excerpts from INPO Rept Re Maint & Surveillance of Activities at Plant ML20057B0271993-08-0505 August 1993 Affidavit of non-disclosure in Support of Access to Excerpts from INPO Re Maint & Surveillance Activities at Plant ML20057B0181993-08-0404 August 1993 Affidavit of non-disclosure in Support of Access to Excerpts from Rept Prepared by INPO Re Maint & Surveillance Activities at Plant ML20057B0221993-08-0404 August 1993 Affidavit of non-disclosure in Support of Access to Excerpts from INPO Rept Re Maint & Surveillance Activities at Plant ML20045G9811993-06-30030 June 1993 Affidavit.* INPO Rept Should Not Be Disclosed Because San Luis Obispo Mothers for Peace Need for Document Do Not Outweigh Interests of Pg&E,Inpo & NRC & Public in Disclosure.W/Certificate of Svc ML20045G9821993-06-25025 June 1993 Affidavit.* Affidavit of Bw Giffin Re Info Contained in Util Response to Third Set of Supplemental Interrogatories & Requests for Production of Documents (Aging) Filed by San Luis Obispo Mothers for Peace ML20045G9901993-06-25025 June 1993 Affidavit.* Affidavit of Bw Giffin Re Info Contained in Util Supplemental Response to Second Set of Interrogatories & Requests for Production of Documents Filed by San Luis Obispo Mothers for Peace ML20045A7031993-05-26026 May 1993 Affidavit of Je Molden Re Util Response to Supplemental Interrogatories Re First Set of Interrogatories & Requests for Production of Documents (Cable Failures) ML20045A7041993-05-26026 May 1993 Affidavit of Je Molden Re Util Response to Miscellaneous Requests for Production of Documents ML20045G9931993-04-13013 April 1993 Affidavit.* Affidavit of Bw Giffin Re Info Contained in Util Response to Second Set of Interragotories & Request for Production of Documents Filed by San Luis Obispo Mothers for Peace ML20128B8341992-11-30030 November 1992 Affidavit of as Masciantonio in Support of NRC Staff Response to Mothers for Peace Suppl to Petition to Intervene.* W/Certificate of Svc ML20116F0631992-10-0707 October 1992 Affidavit of R Becker.* Concerns Re Safety of Plant Operation During Period of CP Recapture Expressed ML20116F0361992-10-0606 October 1992 Affidavit of N Culver.* Affidavit Re Safety Concerns of Plant Operation During CP Recapture ML20116F0701992-10-0606 October 1992 Affidavit of Biesek.* Concerns Re Safety of Plant Operation During Period of CP Recapture Expressed. Encl ML20116F0551992-10-0606 October 1992 Affidavit of E Holder.* Concerns Re Safety of Plant Operation During Period of CP Recapture Expressed ML20235S0091987-10-0202 October 1987 Affidavit of Jd Shiffer.* Explains Util Planned Expansion of Facility Spent Fuel Storage Capacity & Why Delay in Reracking Schedule,Such as Would Be Occassioned by Stay,Will Cause Substantial Harm to Util.Certificate of Svc List Encl ML20216J8641987-06-29029 June 1987 Declaration of Ef Lowry.* Tm Novak Board Notification 87-05 Re Draft BNL Rept Beyond Design-Basis Accidents in Spent Fuel Pools (Generic Issue 82) Received in Late Mar or Early Apr 1987.Proof of Svc Encl ML20216J8471987-06-26026 June 1987 Affidavit of SA Silver Informing That Draft BNL Rept, Beyond Design-Basis Accidents in Spent Fuel Pools (Generic Issue 82) Not Received ML20216J8191987-06-25025 June 1987 Affidavit of RB Ferguson Re Notification of Generic Issue 82.* Board Notification 87-05 Re Generic Issue 82 Concerning Beyond design-basis Accidents in Spent Fuel Pools False & Misleading ML20216J8371987-06-25025 June 1987 Affidavit of N Culver Informing That Board Notification 87-05 Re Draft BNL Rept on Spent Fuel Pool Accidents Never Received ML20213A0331987-01-13013 January 1987 Affidavit of Kp Singh Re Mothers for Peace & Sierra Club 861215 Motion for Summary Disposition Concerning Design of high-density Spent Fuel Racks.Racks Designed in Compliance W/Applicable NRC & SRP Requirements.Certificate of Svc Encl ML20205F6271986-08-15015 August 1986 Affidavit of Pw Niles Reporting Results of Calculations Performed on Postulated Hosgri Event Data ML20206J4201986-06-24024 June 1986 Affidavit of Rc Herrick on 860624 Re Intervenors 860616 Application for Stay & RB Ferguson Affidavit Re Proposed Reracking of Spent Fuel Storage Sys ML20206J4751986-06-24024 June 1986 Affidavit of Wl Brooks Re Intervenors 860616 Application for Stay & RB Ferguson 860616 Affidavit Re Expansion of Spent Fuel Pools.Certificate of Svc Encl ML20206D7501986-06-18018 June 1986 Affidavit of Jd Shiffer Re Proposal to Increase Spent Fuel Storage Capacity,Approved by NRC on 860530.Intervenor Risk Allegations Refuted.W/Certificate of Svc ML20199D1271986-06-15015 June 1986 Affidavit of RB Ferguson Concluding That Spent Fuel Reracking at Facilities Presents Significant Safety Hazard to Surrounding Environ & Population & Poses Risk of Irreversible Contamination ML20099H6491985-03-0505 March 1985 Affidavit of a Jackson Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Technical & Safety Significance of Issues Raised in 841115 Affidavit Re Flud Computer Program.Errors in Program May Lead to 100% Inaccurate Predictions ML20099H6261985-03-0404 March 1985 Affidavit of L Kinney Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Charges of Matl False Statements by Util in Response to Allegations Jir 75-78 & 80 ML20099H6061985-02-24024 February 1985 Anonymous Affidavit Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Concern Over NRC Response to 841127 Disclosure of Significant Engineering Errors & QA Violations in Design of Pipe Supports ML20099H7281985-02-22022 February 1985 Affidavit of Tj O'Neill Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Matl Licensing Issues Resolved by NRC on Basis of False Statements & Omissions.Failure of Diablo Canyon Allegation Mgt Program Described.New Info Encl ML20099H5021985-02-0606 February 1985 Anonymous Affidavit Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Deficiencies W/Engineering Practices on Large Bore Piping & Pipe Supports ML20099H5591985-02-0404 February 1985 Anonymous Affidavit Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re QA Problems in Drafting Dept,Hardware Deficiencies,Mgt Opposition to Reporting Deficiencies to QA & Failure to Follow Engineering Specs ML20099H5741985-01-23023 January 1985 Affidavit of Ho Hudson Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Deficiencies in Cardinal Industrial Products Qa.Corrective Actions Did Not Address Matls Previously Installed.Supporting Documents Encl ML20099H7751985-01-23023 January 1985 Affidavit of Mc Thompson Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Addl Concerns on Issues Examined in 850108 Interview.Supporting Documentation Encl ML20099H5271985-01-22022 January 1985 Affidavit of P Haffey Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Allegations of Misconducting by Region V & of Util Matl False Statements Concerning Previous Allegations ML20099H6631985-01-21021 January 1985 Affidavit of Jl Mcdermott Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re NRC Mishandling of Previous Allegations.Fifteen New Allegations Listed ML20099H7541985-01-18018 January 1985 Affidavit of CC Stokes Supporting Jl Mcdermott & Tj O'Neill 840731 Petition Re Failure of NRC to Honor Rules of Allegation Mgt Program & Matl False Statements by Util in Response to Previous Allegations ML20107C4871984-11-0101 November 1984 Affidavit of Tm Devine Re Employee Concerns That Reactor Vessel Level Instrumentation Sys May Not Provide Reliable Readings ML20107C5011984-10-29029 October 1984 Affidavit of Lockert Re Const Qa,Licensee Character & Competence ML20107C4751984-10-22022 October 1984 Marked-up Affidavit of Mc Thompson Re Possible Fake Welds on Stanchions Holding Up Safety Injection Sys Lines in Unit 1 ML20098F9381984-10-0101 October 1984 Affidavit of Mj Jacobson & Tg De Uriarte,Signed Only by Tg De Uriarte,Re QA Program.Certificate of Svc Encl ML20093N2341984-07-30030 July 1984 Affidavit of Jl Mcdermott Re Need for Reinsps & Systematic Retraining of All Personnel at Facility ML20093K0621984-07-27027 July 1984 Affidavit of Dh Hamilton Re Location & Subsurface Geometry of Hosgri Fault & Tectonic Deformation in Region of Fault ML20093K0811984-07-27027 July 1984 Affidavit of Wh White Re Hosgri Fault Design Bases. Certificate of Svc Encl ML20093K0691984-07-26026 July 1984 Affidavit of SW Smith Re Regional Seismicity & Morgan Hill Earthquake ML20093J3481984-07-24024 July 1984 Affidavit of DG Bridenbaugh,Restating 810811 Affidavit Re Potential Hazards of built-up Fission Products Release. Certificate of Svc Encl ML20090A8501984-07-11011 July 1984 Affidavit of T Devine Notifying of Resignation of I Yin from Review Team Overseeing Plant Readiness for Commercial Operation ML20092B6621984-06-19019 June 1984 Affidavit of DA Rockwell Re Allegations of Mgt Harassment. Related Correspondence 1994-03-04
[Table view] Category:LEGAL TRANSCRIPTS & ORDERS & PLEADINGS
MONTHYEARDCL-99-123, Comment on Prs 10CFR50 & 72 Re Reporting Requirements for Nuclear Power Reactors & Draft NUREG-1022, Event Reporting Guidelines. Util Areas of Concern Includes ESF Actuations, Significantly Degraded Components & Historical Limitations1999-09-20020 September 1999 Comment on Prs 10CFR50 & 72 Re Reporting Requirements for Nuclear Power Reactors & Draft NUREG-1022, Event Reporting Guidelines. Util Areas of Concern Includes ESF Actuations, Significantly Degraded Components & Historical Limitations ML20205N4081999-04-14014 April 1999 Comments Opposing Proposed Rules 10CFR2,19 & 20 Re Proposed Repository at Yucca Mountain.Requests Information on How Much Radiation Being Released Now at Diablo & Hanford NPPs ML20205N4601999-03-21021 March 1999 Introduces K Schumann as Representative of Nuclear Waste Committee (Nuwic) of San Lius Obispo County.Informs That Nuwic & Nuclear Waste Management Committee Concerned with Transportation of Spent Nuclear Fuel Rods from Dcnpp ML20195E8841998-11-24024 November 1998 Petition for Mod to OLs to Require Plant Owner to Have Independent Contractor Evaluate Plant Safety Culture ML20236T3011998-07-24024 July 1998 Order Prohibiting Involvement in NRC Licensed Avtivities (Effective Immediately).Lh Brooks Prohibited for 5 Yrs from Date of Order from Engaging in NRC Licensed Activities ML20248C2261998-05-22022 May 1998 Comment Opposing Revised Proposed Rule 10CFR50 Re Protection & Safety Sys ML20129J4191996-10-18018 October 1996 Order Approving Application Re Corporate Restructuring of Pacific Gas & Electric Company by Establishment of Holding Company DCL-95-206, Comment Supporting Petition for Rulemaking PRM-50-61 Re Improving Fire Protection Regulations1995-10-0606 October 1995 Comment Supporting Petition for Rulemaking PRM-50-61 Re Improving Fire Protection Regulations ML20091P8721995-08-23023 August 1995 Comment Opposing Petition for Rulemaking PRM-50-61 Re Nuclear Energy Institute Proposed Amends on Fire Safety for All NPPs DCL-95-001, Comment on Proposed Changes to Reactor Pressure Vessel Integrity Rule 10CFR50.Endorses NEI Comments1995-01-0303 January 1995 Comment on Proposed Changes to Reactor Pressure Vessel Integrity Rule 10CFR50.Endorses NEI Comments ML20077M7521994-12-30030 December 1994 Comment Opposing Proposed Rule 10CFR50 Re Shutdown & Low Power Operation for Nuclear Power Reactors DCL-94-270, Comment on Proposed Rules 10CFR2,51 & 54 Re Rulemaking for NPP License Renewal.Endorses Comments & Changes Proposed by NEI 941208 Submittal1994-12-0808 December 1994 Comment on Proposed Rules 10CFR2,51 & 54 Re Rulemaking for NPP License Renewal.Endorses Comments & Changes Proposed by NEI 941208 Submittal ML20149H0851994-11-0404 November 1994 Initial Decision (Construction Period Recovery/Recapture).* Renewed Motion to Reopen Record 940808,denied.Served on 941104.W/Certificate of Svc ML20072L2651994-08-23023 August 1994 PG&E Opposition to San Luis Obispo Mothers for Peace Renewed Motion to Reopen Record.* Util Opposes San Luis Obispo for Peace Motion Based on Affidavit Stating No Evidence Found in Motion Re Flaw in Program.W/Certificate of Svc ML20072F0291994-08-12012 August 1994 Erratum to San Luis Obispo Mothers for Peace Motion to Reopen Record.* Intervenors Corrects Error in Renewed Motion to Reopen Record Re Application for License Amend to Extend Term of Operating License for Plant.W/Certificate of Svc ML20072B2651994-08-0909 August 1994 Comment Supporting Proposed Rule 10CFR26 Re FFD Requirements Concerning Random Drug Testing ML20072A5821994-08-0808 August 1994 San Luis Obispo Mothers for Peace Renewed Motion to Reopen Record Re PG&E Application for Amend to Extend Term of OL for Plant.* Motion to Reopen Record to Introduce Insp Rept Identifying Alleged Problems W/Plant.W/Certificate of Svc ML20071L2061994-07-26026 July 1994 Comment Supporting Proposed Rule 10CFR26 Re Changing Current Drug Testing Policies to Exclude All Personnel in nonsafety-related Positions ML20072B8481994-07-26026 July 1994 Comment Opposing Proposed Rule 10CFR26 Re Changes to FFD Requirements Concerning Random Drug Testing ML20071L1901994-07-20020 July 1994 Comments on Proposed Rule 10CFR26 Re Relaxing Rule on Drug Testing of Employees Working at NPP DCL-94-134, Comment Supporting Petition for Rulemaking PRM-50-60 Re Amend to 10CFR50.54 by Changing Frequency W/Which Each Licensee Conducts Independent Reviews of Emergency Preparedness Program1994-06-27027 June 1994 Comment Supporting Petition for Rulemaking PRM-50-60 Re Amend to 10CFR50.54 by Changing Frequency W/Which Each Licensee Conducts Independent Reviews of Emergency Preparedness Program DCL-94-135, Comment Supporting Petition for Rulemaking PRM-50-59 Re Proposed Amend to 10CFR50.54(p) Concerning Frequency W/Which Licensee Conducts Independent Reviews of Security Programs1994-06-27027 June 1994 Comment Supporting Petition for Rulemaking PRM-50-59 Re Proposed Amend to 10CFR50.54(p) Concerning Frequency W/Which Licensee Conducts Independent Reviews of Security Programs ML20064D1791994-03-0707 March 1994 Pacific Gas and Electric Co Reply in Opposition to San Luis Obispo Mothers for Peace Motion to Reopen Record.* Motion to Reopen Record Denied.W/Certificate of Svc ML20064D1961994-03-0404 March 1994 Affidavit of Mj Angus Re Motion to Reopen Record ML20063L5721994-02-25025 February 1994 San Luis Obispo Mothers for Peace Re Util Application for License Amend to Extend Term of Operating License for Plant.* Advises That Record of Proceeding Should Be Reopened to Consider Insp 93-36 Re Util Surveillance of Asw Sys DCL-94-021, Comment Supporting Petition for Rulemaking PRM-21-2 Re Commercial Grade Item Dedication Facilitation1994-01-26026 January 1994 Comment Supporting Petition for Rulemaking PRM-21-2 Re Commercial Grade Item Dedication Facilitation ML20059D2431994-01-0707 January 1994 Package of Intervenor Exhibits Consisting of Related Correspondence Not Admitted Into Evidence.Related Correspondence ML20062N0001993-12-30030 December 1993 PG&E Reply Findings of Fact & Conclusions of Law.* Mothers for Peace Proposed Findings & Conclusions Do Not Provide Any Supportable Rationale to Change Findings & Conclusions Previously Proposed by Pg&E.W/Certificate of Svc ML20058P3931993-12-22022 December 1993 NRC Staff Findings of Fact & Conclusions of Law in Form of Initial Decision.* Certificate of Svc ML20058K7491993-12-0202 December 1993 NRC Staff Motion for Extension of Time.* Board Has Extended Filing Time for Util Until 931230.W/Certificate of Svc. Served on 931206.Granted for Board on 931203 ML20058K8771993-12-0202 December 1993 NRC Staff Motion for Extension of Time.* Requests That Board Extend Date for Staff to File Findings Until 931222. W/Certificate of Svc ML20059M5291993-11-19019 November 1993 Applicant Exhibits A-21,A-22,A-24,A-25,A-26,A-29 & A-F1, Consisting of Related Correspondence Not Admitted Into Evidence.Related Correspondence ML20058E0741993-11-19019 November 1993 San Luis Obispo Mothers for Peace Proposed Findings of Fact & Conclusions of Law Re Licensee Application for License Amend to Extend Term of Operating License for Plant.* W/ Certificate of Svc ML20059E8931993-10-28028 October 1993 Memorandum & Order (Motion for Extension of Time).* San Luis Obispo Mothers for Peace 931018 Request for two-wk Extension of Time to File Proposed Findings of Fact & Conclusions of Law Granted.W/Certificate of Svc.Served on 931029 ML20059E8531993-10-27027 October 1993 NRC Staff Response to Board Memorandum & Order Re Extension of Time.* Staff Believes That San Luis Obispo Mothers for Peace Has Shown No Good Cause for Requesting Extension to File Proposed Findings of Fact.W/Certificate of Svc ML20059E8631993-10-25025 October 1993 Pacific Gas & Electric Co Response to Motion for Extension of Time.* Util Does Not Agree W/Board Assessment That Mothers for Peace Request Appears to Be Reasonable But Will Not Oppose Request.W/Certificate of Svc ML20059B2191993-10-19019 October 1993 Memorandum & Order (Responses to Motion for Extension of Time).* Board Believes Intervenor Request for Extension of Time to File Proposed Findings of Fact Appears Reasonable. W/Certificate of Svc.Served on 931019 ML20059B1071993-10-18018 October 1993 San Luis Obispo Mothers for Peace Motion for Extension of Time for Filing Proposing Findings of Fact & Conclusions of Law.* Requests Extension of Two Wks or Until 931119 to File Proposed Findings of Fact.W/Certificate of Svc ML20057D0531993-09-23023 September 1993 Notice of Appearance.* Notice Given That Undersigned Attorney Enters Appearance in Listed Matter & Listed Info Provided.W/Certificate of Svc ML20057B0401993-09-14014 September 1993 NRC Staff Reply to PG&E Response to Staff Motion to Amend Protective Order.* NRC Staff Moves Board to Adopt Language Requested in 930817 Motion as Stated.W/Certificate of Svc ML20056G4891993-08-30030 August 1993 Pacific Gas & Electric Co Response to Motion to Amend Protective Order.* Staff Asks That Protective Order Be Clarified by Adding New Footnote to Paragraph 3 of Order. W/Certificate of Svc ML20059C7361993-08-24024 August 1993 Intervenor Exhibit I-MFP-88,consisting of NRC Insp of Diablo Canyon Units 1 & 2 IR 05000275/19920161993-08-24024 August 1993 Intervenor Exhibit I-MFP-137,consisting of Insp Rept Re Dockets 50-275/92-16 & 50-323/92-16,dtd 920707 IR 05000275/19930111993-08-24024 August 1993 Intervenor Exhibit I-MFP-26,consisting of Re Insp Repts 50-275/93-11 & 50-323/93-11 ML20059M1381993-08-24024 August 1993 Staff Exhibit S-1,consisting of Re 920519 Enforcement Conference IR 05000275/19920131993-08-24024 August 1993 Intervenor Exhibit I-MFP-140,consisting of 920416,mgt Meeting Repts 50-275/92-13 & 50-323/92-13 ML20059D0841993-08-24024 August 1993 Intervenor Exhibit I-MFP-139,consisting of Insp Rept Re Dockets 50-275 & 50-323,dtd 920417 IR 05000275/19920261993-08-24024 August 1993 Intervenor Exhibit I-MFP-118,consisting of Notice of Violation & Insp Rept Re Docket 50-275/92-26 & 50-323/93-26,dtd 921113 ML20059M5041993-08-24024 August 1993 Staff Exhibit S-2,consisting of Re Notice of Violation ML20059M8621993-08-24024 August 1993 Intervenor Exhibit I-MFP-35,consisting of Rept, Self- Evaluation of Diablo Canyon Power Plant, Dtd Jul 1993 1999-09-20
[Table view] |
Text
'
? -
4
[% <
s q Q+
RELATED C01ULESPONDENCE '. g{[6 Y UNITED STATES OF AMERICA .
0I 1 NUCLEAR REGULATORY COMMISSION Y' #
BEFORE THE ATOMIC SAFETY AND LICENSING BOARD y ,
b In the Matter of ) ]
Docket Nos. 5 O.
PACIFIC GAS AND ELECTRIC. COMPANY 50-323 0.L.
)
(Diablo Canyon Nuclear Power Plant, ) '
Units Nos. 1 and 2) ) ]
l l
AFFIDAVIT OF DALE BRIDENBAUGH
(
Dale Bridenbaugh deposes and says under oath as follows:
1 i
I
- 1. I am a ; graduate engineer thoroughly familiar with operating problems of nuclear generating plants including operating difficulties that could lead to nuclear reactor accidents. I received my B.S. in Mechanical Engineering from the South Dakota School of Mines and Technology in 1953. For the past twenty-two years, until February,1976, I worked as an engineer with General Electric on all aspects of power generation equipment design, manufacture and operations. During
- the last ten of those twenty-two years, I worked in management positions in the area of operations of nuclear power plants and i solutions to operational problems of those plants. My most recent position at General Electric was Manager - Performance Evaluation and Improvement. My responsibilities in that position includes evaluation of the operations of all General Electric -
designed nuclear power plants in the world. A complete list of
)
r, ,- b p -
G708110345 870729 y
J PDR FOIA CONNOR87-214 .PDR . _ _ _ _ - _ _ _ - - -
my training, experience and qualifications as a nuclear power plant engineer accompanies this affidavit as Attachment 1.
l
- 2. Based upon my experience as a nuclear plant operations engineer and the intimate familiarity with nuclear power plant f
l operating problems and component capabilities that experience i
l has given me, it is my opinion that a ground acceleration of l .759 at the Diablo Canyon plant site that the nearby Hosgri l fault can produce could credibly cause serious reactor accidents at'the Diablo Canyon power plant. Such an accident would release significant quantities of radionuclides into the atmosphere, resulting in significant adverse impacts on the environment.
- 3. Seismic events provide a difficult aspect of nuclear power plant design verification. The current Diablo Canyon seismic evaluation is a prime example of the problem imposed by attempting to design to withstand forces that are impossible ,
to fully model and predict, and,which cannot be tested in a full scale, integrated system mode.
- 4. Diablo Canyon was originally given a design basis of 0.4g ground acceleration. The current seismology indicates that a ground acceleration of at least 0.75g at the plant site is credible. This changed level of knowledge regarding seismicity at the Diablo Canyon site places in serious doubt the capabilities of the structures and components of the generating plant, including ,
the control systems, to withstand'a major credible seismic event
. *'s
.' without breakage or malfunction resulting in a serious reactor accident causing substantial harm to the environment and' human f health. .
- 5. Current desigr. standards call for multi-frequency, multi-axis, testing or suitable seismic analysis of major components, particularly those in the safety systems. The purpose-of such testing'is to consider transient loads due to the seismic events and to find the simultaneous effect of the loads from different frequencies and different directions of excitation. Experience has shown that the results of a seismic test of a major reactor 4
component are generally quite different from analytical results and often difficult to reconcile. Plants may be designed to less severe decign basis carthquake criteria, and~the modeling of the structures may be less sophist'icated than new information would require. The result is lower calculated excitation at some locations where safety-related equipment is mounted.
l l
- 6. The risk that a plant may experience earthquake loads much greater than the original design criteria may be due to any of several causes: (1) inadequate modeling, (2) the effect of combined loads compared to single frequency tests, and (3) design l
criteria changes.after the design basis is set. The discovery of the previou' sly unknown Hosgri fault near Diablo Canyon gives rise to the probability that the design is inadequate. Such inadequacies could result in serious accidents if major. earth-quakes were to occur. The following is a list of typical accident 4
i u_ . _ _ .
~'c'enarios s that could result from an earthquake at Diablo Canyon.
Many other credible accident scenarios could be developed.
.I. Loss Of Coolant Accidents (LOCA)
' Loss of coolant accidents are events that must be considered in the standard design
- basis. However, inadequate '
l se'ismic design may have a serious effect on plant performance during a LOCA for several reasons:
(a) First, gross movement of the structures and/or components may result in multiple / simultaneous ruptures which exceed the brsak size considered as the paximum )
l credible in the design basis.
l (b) Gross movement of the pressure vessel or of the I steam generators may result in ruptures that are not I
l considered credible under normal circumstances; i.e., a rupture of the vessel.
1 (c) Major seismic events will almost surely be accompanied by loss of off-site power, and may result in loss of on-site emergency power if the seismic basis i is inadequate. This will result in the "one-in-a-billion' consequences specified in the Reactor Safety Study.
II. Loss of Control Function All reactor safety systems are designed to withstand events as specified in IEEE-279, "the single failure criteria." Loss of control of critical systems can result in serious power transients and/or inability of safety systems to provide critical core cooling as designed.
Such failures could result in serious core damage and/or meltdown.
l
I I
III. Gross Structure / Component Failure i
Many accident sequences not evaluated in the normal review process could result from seismic events exceeding the. general' design basis. All such accident sequences '
1 would. result in major core melting and release of substantial quantities of radioactive materials. A few to consider are:
(a) Containment system failure, resulting in j uncontrolled release of materials for any LOCA.
l (b) Failure of reactor vessel internals.
Such i
failures would include movement of fuel, interfering with control rod insertion, failure of ECCS components and/or water supply, f ailure of core barrel support i 1
structure resulting in a large reactivity addition transient, etc. .
(c) Gross failure of steam generator internals resulting in a LOCA coupled'with loss of containment function.
(d) Gross structural failure of control areas. Gross {
l damage to the plant buildings could make personnel access to both the normal and to the remote shutdown control areas impossible or highly hazardous. Such loss of control could lead to a complete core. meltdown.
IV. Spent Fuel and Waste Storage Accidents Inadequate seismic design could lead to serious l 1
releases of radioactive material from the radioactive material 1 storage areas. This problem will be particularly acute since no spent fuel reprocessing facilities are likely to
[
1
l .
j
~
be in operation for the next 6-8 years. This unavailability of reprocessing facilities will increase .the on-site inventory of stored fuel and its attendant risk. Credible j seismic event-induced accidents of fuel storage areas 4 l
' include: .
(a) Failure of spent fuel storage racks collapsing, l j resulting in an uncontrolled criticality.
(b) Structural damage to the storage pool. Such *
)
1 structural damage could result in leakage of the j water and radioactive material to the environs. A gross failure could result in complete loss o water and fuel melting. I (c) l' Seismic events occurring during fuel handling. i i
These earthquakes could result in dropping of the ;
shipping cask, failure of bridges and highways during i
fuel transportation, etc. This type of accident !
could also cau'se the release of radioactive waste. i,
- 7. Most of the plant, including structures, components, systems, and procedures, was designed, manufactured, and constructed to a now-inadequate seismic basis. It is therefore imperative that i all the above events, in addition to the normally considered t accidents, be given a thorough evaluation before nuclear operation t I
is permitted.
' Changes must be completed before operation to insure the protection of the environment and the health and I l
i 1
l
safety of the public.
JaALLat Dale Bridenbaugh'
[ '
i Subscribed and sworn to before me this 7 d'ay of September, 1976.
wounini.. nun .n....neus.n..nrn.in..n.nu..
j t
E MAURE:N STURGEON ?! .
/:-7p a 1,*. n < t f'ef s. t y w 5 Nouun , vs s - ..a F
""N'#^' N
/ Notary Publi E g SANI A CL A!<A C.;UWl Y p
( 5 Mr Comndssion le><en February 9,1980 M Estiusstsasso H u n s : n s tun u s i e sis s s e n s sis u s u s s s 0' My Commission Expires (SEAL)
G
- l
\
i l
r e l
l 1 l
dhe
-- - - - - - - - - - - - - _ - - - - _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _