Letter Sequence Other |
|---|
|
Results
- Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval, Approval
Other: ML19325E833, ML19327A643, ML19327A644, ML19327A651, ML19327A658, ML19327A660, ML19327A663, ML19327A664, ML19327A665, ML19327A666, ML19327A667, ML19327A670, ML19327A671, ML19327A672, ML19327A673, ML19327B596, ML19327B598
|
MONTHYEARML19327B5951989-05-10010 May 1989
Safety Evaluation Accepting Util 860221 Proposed Amend to Licenses DPR-39 & DPR-48,revising Tech Specs to Limit Purge & Vent Valve Operation Above Cold Shutdown
Project stage: Approval
ML19327A6411989-05-10010 May 1989
Forwards Safety Evaluation Accepting Proposed Tech Spec Changes Re Purge/Vent Operation.Licensee Should Verify That Positive Stop Installed on Valve to Prevent Opening Beyond Tech Spec Angle
Project stage: Approval
ML19327A6611989-05-11011 May 1989
Discusses Differing Professional View Re Issuance of SER to Plant Allowing Full Power Operation W/Open 42 Containment Isolation Valves & Methodology Use for Calculating Related Offsite Doses
Project stage: Approval
ML19327B5881989-05-11011 May 1989
Safety Evaluation Concluding That 42-inch Containment Purge & Supply Valves Should Remain Closed in Modes l,2,3 & 4 Since Consequence of Offsite Dose to Thyroid from Iodine During LOCA Unacceptably High
Project stage: Approval
ML19327A6621989-05-11011 May 1989
Forwards SER Re Licensee Proposal Allowing Full Power Operation of Facility w/42 Inch Purge Supply & Exhaust Containment Isolation Valves
Project stage: Approval
ML19327A6431989-05-18018 May 1989
Ack Receipt of Containing Differing Prof Opinion Re Methodology Used for Calculating Related Offsite Doses. List of Persons to Be Considered as Third Member of Standing Review Panel Requested
Project stage: Other
ML19327A6441989-05-25025 May 1989
Submits List of Nominees for Third Member of Standing Review Panel,Per 890519 Request
Project stage: Other
ML19327A6661989-05-26026 May 1989
Forwards 890511 Memo Expressing Differing Professional View of B a Licciardo Re Containment Isolation Valves,For Review & Recommendation by J Miraglia
Project stage: Other
ML19327A6671989-06-0202 June 1989
Informs of Adequate Info Being Supplied to Initiate Review by SRP Re Differing Professional View
Project stage: Other
ML19327A6471989-06-23023 June 1989
Requests Notification of When Requested Info Re Containment Isolation Valves W/Regard to Fuel Failure for LOCA Analyses, Clarification of Mechanisms Used for Transporting Fission Products & View on Safety Significance Will Be Provided
Project stage: Approval
ML19327A6681989-06-30030 June 1989
Advises That Specific Issues Identified in 890623 Memo Would Be Further Clarified by 890717
Project stage: Approval
ML19327A6691989-07-14014 July 1989
Corrected Memo Advising That 890717 Submittal,Re Clarification of Differing Prof View,Will Be Provided on 890723
Project stage: Approval
ML19327A6701989-07-14014 July 1989
Advises That Info Provided by Memo Will Be Submitted by 890720
Project stage: Other
ML19327A6601989-07-20020 July 1989
Discusses Differing Professional View Re Plant Containment Isolation Valves
Project stage: Other
ML19327A6721989-07-20020 July 1989
Evaluation of Criteria for & Calculation of Offsite Doses Deriving from Open Containment Purge Valves During LOCA at Zion Units 1 & 2
Project stage: Other
ML19327A6711989-07-21021 July 1989
Notifies EDO of Status Re Differing Professional View Filed on 890511.Chronology Documents Status Encl
Project stage: Other
ML19327B5991989-07-27027 July 1989
Requests Listed Clarifying Info Supporting Standing Committee on Differing Prof Views (Dpv) Review of Licciardo Dpv Re Containment Isolation Valves at Plant.Info Requested by C.O.B. on 890727
Project stage: Approval
ML19327A6731989-08-10010 August 1989
Discusses Differential Professional View Re Plant Purge Operation
Project stage: Other
ML19327A6511989-08-10010 August 1989
Forwards N Lauben Memo Re Technical Issues Raised in Dpv Concerning Containment Isolation Valves at Facilities. Rupture of High Burnup Fuel Pins During Blowdown Transient Not Credible for Existing Fuel Designs
Project stage: Other
ML19327A6521989-08-10010 August 1989
Comments on Dpv Concerning Early Blowdown Cladding Rupture During Large Break Loca.Table Listing Gapcon Pin Pressure Calculations Encl
Project stage: Approval
ML19327A6631989-08-11011 August 1989
Discusses View on Purging Re Plant Containment Isolation Valves
Project stage: Other
ML19327A6571989-08-21021 August 1989
Forwards Comments on Differing Prof View Re Early Blowdown Cladding Rupture During Large Break Loca.Comments Address Issues Re Cladding Rupture of High Burnup High Pressure Fuel Early in Blowdown Prior to Containment Isolation
Project stage: Approval
ML19327B5981989-08-22022 August 1989
Advises of Apparent Fundamental Misunderstanding in Preparation of Document Contributing to Resolution of Differing Prof View Re Containment Isolation Valves at Plant,Per 890821 Telcon W/W Hodges
Project stage: Other
ML19327B5961989-08-22022 August 1989
Summarizes 890822 Telcon from Licciardo Re Matl Provided to Review Panel,By Nrc,Concerning Licciardo Differing Prof View on Containment Isolation Valves at Plant.Licciardo Asked to Provide Concerns in Written Form by C.O.B. on 890822
Project stage: Other
ML19327A6561989-08-23023 August 1989
Forwards Revised Comments from Gn Lauben on Differing Prof View Re Early Blowdown Cladding Rupture During Large Break Loca.Rupture of High Burnup Fuel Pins During Blowdown Transient Not Credible for Existing Fuel Designs
Project stage: Approval
ML19327A6641989-08-24024 August 1989
Advises That 890811 Note Providing Revised Analyses to Recognize Higher Linear Heat Generation Rates for Zion, Remain Unchanged
Project stage: Other
ML19327A6581989-08-25025 August 1989
Informs That Author Reviewed R Licciardo 890822 Memo to F Miraglia Re Adequacy of N Lauben Analysis of LOCA Using Low Burnup,Low Pressure Fuel & Which Have High LHGR than Analyzed by Lauben.Early Rupture of Fuel Pins Remains Valid
Project stage: Other
ML19327A6651989-08-29029 August 1989
Forwards Response to Question Addressed in 890822 Memo Re Containment Isolation Valves
Project stage: Other
ML19327A6931989-09-13013 September 1989
Lists Actions Needed to Be Taken Re Review of 890511 Differing Prof View,Including Issuance of Evaluation of Zion Tech Specs
Project stage: Approval
ML19327B5701989-09-19019 September 1989
Discusses R Licciardo 890511 Differing Prof Opinion.Action Requested Per Encl Murley 890913 Memo Directing NRC to Ensure That Pressure & Temp Effects During LOCA Cosidered in Review of New & Advanced Fuel Designs
Project stage: Approval
ML19325E8331989-10-31031 October 1989
Forwards Chronology Re R Licciardo Differing Prof View on Containment Isolation Valves at Plant.Encl 2 Is NRR Records Associated W/Differing Prof View.W/O Encl 2
Project stage: Other
1989-07-21
[Table View] |
Similar Documents at Zion |
|---|
|
Text
.
- ~ - -
'i[
i
,y
~ p **
4 t
4 t'
,og UNITED STATES NUCLEAR REGULATORY COMMISSION i
n WASHINGTON, D. C. 206&B
^
g
{L August 25, 1989 h0TE TO: Ashok C. Thadani, Assistant Director for Systems Division of. Engineering & Systems Technology FRON:
Robert C. Jones, Acting Chief Reactor Systems Branch
-Division of Engineering & Systems Technology
SUBJECT:
DPV CONCERNING CONTAINNENT ISOLATION VALVES AT ZION s
I have reviewed Robert Licciardo's August 22, 1989 memorandum to Frank Miraglia wherein he questioned the adequacy of Norm Lauben's analysis transmitted to you by M. W. Hodges note of August 10,1989(subsequently l
revised by note of August 23,1989). The specific concern was that Norm's l
analysis failed to consider the consequences of a LOCA using low burnup, low l
pressure fuel and which have high linear heat generation rates (LH6R) than analyzed by Norm.
I have further evaluated this issue, with the assistance of Norm Lauben, in L
response to the memorandum. We have arrived at the following conclusions:
(1) The specific case of low burnup, low pressure fuel is already analyzed in
+
the LOCA analysis. The possibility for fuel pin rupture is continuously examined during the calculation and rupture is not calculated to occur during the early blowdown period of the LOCA.
(2) As burnup increases to 40,000 MWD /MTU, average fuel temperatures l
decreases while fuel pin pressures slowly increase. We judge that this combination of temperatures and pressures would prevent an early rupture during blowdown.
1 L
(3) Above 40,000 MWD /MTU, the earlier analysis sufficiently demonstrates that no earlier ruptures occur.
Therefore, the earlier conclusion that early rupture of fuel pins during the blowdown transient is gL credible remains va*1d.
t Robert C. J es, Acting Chief Reactor Systems Branch Division of Engineering & Systems Technology cc: N.Lauben(NLN-353)
C Y*
t I
A
}'
List of Memoranda 1.
Memorar. @ to T. No from R. Licciardo dated May 11,1989,subj:
" Differing e'rofessi.
11ewConcerninga)IssuanceofSERtoZion1/2 allowing full power. w. '. ion with open 42" container.nt isolation valves.
b) Methodology used for calculating related offsite doses."
a Memorandum to R. Licciardo from T. Murley(a)ated May 18.-1989,subj:
d 2.
" Differing Professional View Concerning Zion 1/2 Containment Isolation
(
Valves, and (b) Methoonlogy used for Calculating Related Offsite Doses."
3.
Memorandum to T. Murley from R. Licciardo dated May 25,1989,subj:
"Different Professional. View (DPV) Concerning Zion. Persons Proposed as Third Member of Standing Review Panel."
4.
Memorandum to F. Miraglia, C..E. Rossi, F. Congol from T. Murley dated May 26, 1989, subj: " Differing Professional View of Robert B.A. Licciardo Concerning Containment Isolation Valves at Zion."
5.
Memorandum to R. Licciardo from F. Miraglia dated June 2,1989, subj:-
"DifferingProfessionalView(DPV)ConcerningContainmentIsolationValves at Zion.
6.
Memorandum to R. Licciardo from F. Miraglia dated June 23,1989,subj-
" Differing Professional View (DPV) Concerning Containment Isolation Valves at Zion."
7.-
Memorandum to F. Miraglia from R. Licciardo dated June 30,1989,subj:
"DifferingProfessionalView(DPV)ConcerningContainmentIsolationYalves at Zion."
8.
Memorandum to F. Miraglia from 't. Licciardo dated July 14,1989,subj:
" Differing'ProfessionalView(DPV)ConcerningContainmentIsolationValves at Zion.
l 9.
Memorandum to F. Miraglia from R. Licciardo dated July 14,1989,subj:
"DifferingProfessionalView(DPV)ConcerningContainmentIsolationValves i
at Zion." (Note: This memorandum corrected the date given in No. 7.)
"DPV
- 10. Memorandum to R. Licciardo from F. Miraglia dated July 21,)1989,subj:
Concerning Containment Isolation Valves at Zion (TAC 73427 - Status Information."
l l
L
,_ _ __ _..._ _ _ ___.... _ ___
