ML19327A671
| ML19327A671 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 07/21/1989 |
| From: | Miraglia F Office of Nuclear Reactor Regulation |
| To: | Licciardo R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19327A642 | List:
|
| References | |
| TAC-73427, NUDOCS 8909140162 | |
| Download: ML19327A671 (3) | |
Text
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July 21, 1989 MEMORANDUM FOR: Robert Licciardo, Reactor Engineer P1 sit Systems Branch, DEST I
FROM:
Frank J. Miraglia, Associate Director for Inspection and Technical Assessment i
$UBJECT:
OPV CONCERNING CONTAINMENT ISOLATION VALVES AT ZION (TAC 73427). STATUS INFORMAT10N j
l This is to acknowled9e that on July 20, 1989, I received the information requested by sy June 30, 1989 memorandum. Based on the receipt of this infomation, the Standing Review Panel (E. Rossi, F. Congel and syself) can 4
continue its review of your concerns. The Panel expects to complete this I
review within 30 days, as provided for in Manual Chagter (MC) 4125 (see page 2, item 7 of the enclosure to MC 4125 entitled Procedures for the Empression and Disposition of Differing Professional Views and Opinions, which is attached to NRR Office Letter No. 300, Revision 1 dated March 24,1989).
Pursuant to MC 4125, the Director, NRR is expected to make a final disposition j
of the issue within seven days of the fanel's decision.
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By copy of this memorandum NRR is notifying the ED0 of the status of the Differing Professional View that you filed on May 11, 1989. The enclosed i
chronology documents the status to date.
orisind stand W i
Frank J. Miraglia Frank J. Miraglia, Associate Director I
for Inspection and Technical Assessment l
Enclosure:
DISTRIBUTION cc w/ enc 1:
central riies V. Ste110. E00 ADMRF(2)
J. Blaha, A0, EDO H$sith T. Murley VWilson J. Snierek JLarkins i
F. Gillespie fMiraglia l-E. Rossi 7
F. Congel J. Partlow l
G. Holahan A. Thadani l
C. Patel l
C. McCracken
- gh CONTACT:
e H. Smith, PMAS.s x21287
- see previous concurrence (opy) fc arms:NRR
- ADT
LAME *HSmith
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nATE 207/20/89
- 07/ O 89 5
AFFTPTAl DFenDn enDV
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<n CHRONOLOGY Robert Licciardo DPV Concerning Containment 1 solation Valves at Zion l
f Date Description MemorandumfromR.LicciardotoT.MurleyIng(a)ct subje
$/11/89 Differins Professional View (DPV) Concern Issuance of 5ER to l'on I and Z allowing fuel power operation with open 42" l
containment isolation valves; (b) methodology used for calculating related offsite doses.
l 5/18/89 Memorandum from T. Murley to R. Licciardo acknowledging that on l
May 12, 1989, the Director's Dffice received his DPV dated May 11, 1989.
Note that this memorandum also requests a listing of persons Mr. Licciardo would like to be considered for the third and alternate members for the Standing Review Panel.
5/25/89 Memorandum from R. Licciardo to T. Murley, nominating S. Varga, F. Congel and G. Holahan to consider as third and alternate members of the Standing Review Panel.
l 5/26/89 Memorandum from T. Murley to F. Miraglia, C. E. Ross~1, and i
F. Congel stating that they have designated the panel to review
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and recommend to the Director. NRR, the appropriate disposition i
of Mr. Licciardo's DPV.
6/2/89 Memorandum from F. Miraglia to R. Licciardo acknowledging that l
the Standing Review Panel has determined that adequate l
infonnation has been supplied to initiate a review of the DPV.
6/16/89 The Standing Review Panel met with Mr. Licciardo to further discuss his views.
6/23/89 Memorandum from F. Miraglia to R. Licciardo acknowledges meeting held on June 16. 1989, and the Panel's request for the following information: (1)requestthatMr.Lfcciardomore clearly state his concern regarding the time to fuel failure used in LOCA analyses (2) request that Mr. Licciardo clarify
,i the mechanisms for transporting fission products from the rimary to containment used in Mr. Licciardo's analyses; and p(3) request that he provide his view as to the saf6ty significance of proceeding with the proposed Zion amendment and the safety significance of his concern regarding LOCK analyses.
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f 6/30/89 Mencrandum f sm R. Licciardo.to F. Mira911a stating that
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the informat.on requested by memo from P. Miraglia dated 6/23/89 will be provided by July 17, 1989.
j 7/14/89 Mercrandum from R. Licciardo to F. Miraglia advising that information provided by his memorandum dated June 30, 1989 will be submitted by July 20, 1989 i
7/20/89 Memorandum from R. Licciardo to F. Miraglia transmitting information requested on June 23, 1989.
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August 29', 1989:
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. NOTE TO: Frank Miraglia
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FROM:
' Ashok Thadani m
SUBJECT:
DPV CONCERNING CONTAINMENT ISOLATION ').i#S AT ZION g
r LThe attached provides the response to d e qastion aadressed in F
4 your note to me dateo August 22, 1989.
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E Ashok Thadani r
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Enclosure:
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August 25. 1989 h0TE TO: Ashok C. Thadani, Assistant Director-for Systems Division of Engineering & Systems Technology FROM:
Robert C. Jones Acting Chief Reactor Systems Branch Division of Engineering & Systems Technology y
SUCJECT: 'DPV CONCERNING CONTAINMENT ISOLATION VALVES AT ZION I have reviewed Robert Licciardo's August 22, 1989 memoranous 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 revised by note of August 23,1989).
The specific concern was that Norm's analysis failed to consider the consequences of a LOCA using low burnup, low pressure fuel and which have high linear heat generation rates (LHGR) than analyzed by Form.
I have further evaluated this issue, with the assistance of Norm Lauben, in 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 1
the LOCA analysis. The possibility for fuel pin rupture is continuously t
l examined during the calculation and rupture is not calculated to occur during the early blowdown period of the LOCA.
1 (2) As burnup increases to 40,000 MWD /MTU, average fuel temperatures i
decreases while fuel pin pretsures slowly increase.
We judge that this
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combination of temperatures and pressures would prevent an early rupture I
L during blowdown.
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i (3) Above 40,000 MWD /MTU, the earlier analysis sufficiently demonstrates that l
no earlier ruptures occur.
Therefore, the earlier conclusion that early rupture of fuel pins during the bbwdown transient is g credible remains velid, i
Robert C. J es, Acting Chief Reactor Systems Branch Division of Engineering & Systems Technology cc: N.Lauben(NLN-353) 1 JA s
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-NOTE TO:. Frank Miraglia FROM:
Ashok Thadant
SUBJECT:
. DPV CONCERHING CONTAINMENT ISOLATION VALVES AT ZION The attached provides the response to the question addressed in a
your note to me dated August 22, 1989.
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Ashok Thadani
Enclosure:
As stated
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August 25, 1989 h0TE TO: Ashok C; Thadani, Assistant Director for Systems Division of Engineering 8 Systems Technology E
FROM:
Robert C. Jones, Acting Chief Reactor Systems Branch Division of. Engineering & Systems Technology o
SUBJECT:
'DPV CONCERNING CONTAINMENT ISOLATION YALVES AT ZION I have reviewed Robert Licciardo's August 22, 1989 memorancus to Frank Miraglia wherein he quest 1L.ed the adequacy of Norm Lauben's analysis transmitted to you by M. W. Hodges note of August 10,1989(subsequently revised by note of August 23,1989). The specific concern was that Notm's analysis failed to consider the consequences of a LOCA using low burnup, low pressurt fuel and which have high linear heat generation rates (LHGR) than analyzed by Norm, I have further evaluated this issue, with the assistance of Nom Lauben, in response to the memorandum. We have arrived at the following conclusions:
(1) The specific case of low burnup, icw 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 decreases while fuel pin pressures slowly increase. We judge that this combination of temperatures and pressures would prevent an early rupture during blowdown.
(2.) Above 40,000 MWD /MTU, the earlier analysis sufficiently demonstrates that
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no earlier ruptures occur.
Therefore, the earlier conclusion that early cupture of fuel p.ns during the blowdown transient is no.t credible remains valid.
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Robert C. J es, Acting Chief Reactor Systems Branch Division of Engineering & Systems Technology cc: N.Lauben(NLN-353) 499eroW &
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