ML17326A818
| ML17326A818 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 01/02/1981 |
| From: | Miner S Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8101150368 | |
| Download: ML17326A818 (16) | |
Text
'J IL ~ ~
~
4s
~flRf~
0
++*++
Docket Nos.:
50-315/316 UNITED STA I ES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Jgj 7
]901 (q
LICENSEE:
Indiana 8 Michigan Electric Company FACILITY:
D.
C.
Cook Nuclear Plant Units Nos.
1 8
2
SUBJECT:
SUMMARY
OF MEETING HELD ON DECEMBER 19, 1980 WITH AMERICAN ELECTRIC POWER CO.
AND INDIANA AND MICHIGAN ELECTRIC CO.
TO DISCUSS'THE ULTIMATE STRENGTH OF THE D.
C.
COOK CONTAINMENTS AND HYDROGEN CONTROL MEASURES FOR THE CONTAINMENT On November 26, 1980, Mr. Miner called Dr. Castresana and Mr. Milioti and requested that Indiana 8 Michigan Electric Co.
(ISMC) commit to (1) installing an interim hydrogen control system, such as the igniter system; (2) a date that the design and the justification for the selected system will be submitted; and (3) an installation date.
On December 5, 1980, Mr. Milioti called to state that prior to making the requested commitments they would like to meet with the staff to discuss the I8MC complete program for hydrogen control measures including the structural analysis of the ultimate strength of the Cook containments.
The meeting was held on December 18, 1980.
The attendee list is attached.
Discussion A.
Ultimate stren th of the Cook Containments The licensee.-agrees that the D.
C.
Cook equipment hatch cover is the pressure limiting component for the D.
C.
Cook containment.
Their calculations however showed that if the actual average material yield values for the materials are used the pressure capability of the hatch cover is 40.8 psi.
Our preliminary calculations utilizing minimum specified allowable material yield values indicated that the hatch pressure capability is 23.5 psi.
Th. licensee indicated that the 40.8 psi is comparable to the static pressIIre capability of the Sequoyah containment.
Utilizing actual average material yield values for rebar the licensee calculated that the reinforced concrete containment has a static pressure capability of 69.7 psi.
The following comments.were provided by the staff:
1.
We were concerned that the weakest components in the containment was the equipment hatch because of the greater potential for leakage.
2.
To make the D.
C.
Cook analysis comparable to the Sequoyah minimum actual values for material properties should be used and at least the analysis and information outlined in our December 11, 1980 letter to Indiana and Michigan Electric should be provided in their report.
3.
The licensee should provide in its report a proposed method for increasing the strength of the equipment hatch cover so that it will not be the limiting component.
4.
The licensee should propose a forcing function for their dynamic analysis of the containment's capability.
Subsequent to the meeting the licensee stated that timey will submit their structural report early in May 1981.
B.
H dro en Control Measures The licensee described their research and study program for hydrogen control measures.
In general, it is a program associated with the TVA and Duke Power Programs.
They indicated that sufficient infor-mation should be available from the program to allow.them to select the D.
C.
Cook hydrogen mitigation system in November 1981.
They expect it will take about an additional year to year and half to
, design, procure and install the system.
They are currently engaged in the conceptual d sign of a distributed ignition system which they expect to complete in March 1981.
However, because of the lack of information on some of their concerns with the ignition system they propose to not select their mitigation system until the research and studies have been completed.
The licensee also indicated that their first quarterly report on the research program, structural analysis and conceptual design study will be supplied in January 1981.
Me made the following comments:
1.
Their proposal to make their decision on a hydrogen mitigation system for D.
C.
Cook in November 1981 and then to install it one to one and half year later is unacceptable.
2.
They should undertake a program to have an interim mitigation system ready for installation during the next refueling outage for each plant (Ap "il/May 1981).
JAr~
S
~qual 3.
We indicated that but for the unacceptably long time for selection and installation of the mitigation system the research and study program outlined appeared to be comprehensive and well planned.
Attachment:
Attendance List cc vc/attactugent:
See next page Sydney Msner, Project Manager Operating Reactors Branch Pl Division of Licensing
ATTENDEES ULTlMATE STRENGTH OF D.C.
COOK CONTAINMENT NRC Sydney Miner Owen Rothberg Frank Rinaldi.'ranzSchauer John Austin David Pyatt Gunter Amdt Herman Graves Raj Auluck.
AEP Thomas E. Philips K. J. Vehstedt Stephen J. Milioti H. L. Alexander Michael H. Schwartz (consultant)
John D. Stevenson (consultant)
NRC Sydney Miner C.
G. Tinkler W.
R. Butler L. S.
Rubenstein John Austin Westin house R.
S.
Howard Duke Power F.
G. Hudson Hydrogen Mitigation AEP Herbert L. Alexander Thomas E. Philips Stephen J. Milioti K. J. Vehstedt Michael H. Schwartz (consultant TVA Don L. Wil'liams David Renfro Bob Bryen
1 II a
I I'I.
Docket Nos.:
50-315/316 SAN 2
1981
~l< ~A Qgl'jrjFr I
ip t LICENSEE:
Indiana 8 Michigan Electric Company FACILITY:
D.
C.
Cook Nuclear Plant Units Nos.
1 8 2
SUBJECT:
SUNORY OF MEETING HELD ON DECEMBER '}9, 1980 WITH AMERICAN ELECTRIC POWER CO.
AND INDIANA AND MICHIGAN ELECTRIC CO.
TO DISCUSS THE ULTIMATE STRENGTH OF THE D; C.
COOK CONTAINMENTS AND HYDROGEN CONTROL MEASURES FOR THE CONTAINMENT On November 26, 1980, Mr. Miner called Dr. Castresana and Mr. Milioti and requested that Indiana
& Michigan Electric Co.
(IBMC) commit to (1) installing an interim hydrogen control system, such as the igniter system; (2) a date that the design and the Justification for the selected system will be submitted; and (3) an installation date.
On December 5,
1980, Mr. Milioti called to state that prior to making the requested commitments they would like to meet with the staff to discuss the ISMC complete program for hydrogen control measures including the structural analysis of the ultimate strength of the Cook containments.
The meeting was held on December 18, 1980.
The attendee list is attached.
Discussion A.
Ultimate stren th of the Cook Containments The licensee agrees that the D. C.
Cook equipment hatch cover is the pressure limiting component for the D. C.
Cook containment.
Their calculations however showed that if the actual average material yield values for the materials are used the pressure capability of the hatch cover is 40.8 psi.
Our preliminary calculations utilizing minimum specified allowable material yield values indicated that the hatch pressure capability is 23.5 psi.
The licensee indicated that the 40.8 psi is comparable to the static pressure capability of the Sequoyah containment.
Utilizing actual average material yield values for rebar the licensee calculated that the reinforced concrete containment has a static pressure capability of 69.7 psi.
The following comments were provided by the staff:
1.
We were concerned that the weakest components in the containment was the equipment hatch because of the greater potential for leakage.
OFFICE/
SURNAME/
0AVEf>
NRC FORM 318110/801NRCM 0240 OFFICIAL RECORD COPY o USGPO'98~29424
C
~
P
e v
2 w
JAN 2
1981 2.-- To make the D.
C. Cook analysis comparable to.the Sequoyah minimum actual values for material properties should be used and at least the analysis and information outlined in our December ll, 1980 letter to Indiana and Ichigan Electric should be provided in their report.
3.
The licensee should provide ih~itspieport a proposed method for increasing the strength of the equipment hatch', cover so that ft will not be the limiting component.
4.
The licensee should propose a forcing function= for their dynamic analysis of the containment's capability.
Subsequent to the meeting the licensee stated that they will submit their structural repor t early in May 1981.
B.
H dro en Control Measures The licensee described their research and study program for hydrogen control measures.
In general, ft is a program associated with the TVA and Duke Power Programs.
They indicated that sufficient infor--
mation should be available from the program to allow them to select the D.
C.
Cook hydrogen mitigation system in November 198'i.
They expect it will take about an additional year to year and half to
- design, procure and install the system.
They are currently engaged in the conceptual design of a distributed ignition system which they expect to complete in March 1981.
However, because of the lack of information on some of their concerns with the ignition system they propose to not select their mitigation system until the research and studies have been completed.
The licensee also indicated that their first quarterly report on the research program, structural analysis and conceptual design study will be supplied in January 1981.
He made the following comments:
1.
Their proposal to make their decision on a hydrogen mitigation system for D. C. Cook in November 1981 and then to install it one to one and half year later is unacceptable.
2.
They should undertake a program to have an interim mitigation system ready for installation during the next refueling outage for each plant (April/Nay 1981).
OFFICE/
SURNAME/
DATE0 NRC FORM 318 (10/80) NRCM 0240 OFFICIAL RECORD COPY 4 USGPO: 1980-329.824
I I
I~
~
~ i l'
n
\\
~
~
c g
~\\ 3 2 198t 3.
Me indicated that but for the unacceptably long time for selection and installation of the mitigation system the research and study program outlined appeared to be comprehensive and well planned.
(~j 2 Sydney Miner, Pro)ect Manager Operating Reactors Branch 01 Division of Licensing
Attachment:
Attendance List cc w/attachment:
See next page OFFICE)
SURNAMEtI 0ATE'f>
DL:ORBICI SMine 12/31/80 RB r a 2/p 0
NRC FORM 318110/80) NRCM 0240 OFFICIAL RECORD COPY 9 USGPO; 198~294124
H Jw.
I V I I
\\
~,
V H
I I
~:
Distribution for Neetin Summar
~ocket File 5 0 9 r'~
NRC PDR Local PDR ORB Reading H.
R. Denton E.
G.
Case D. Eisenhut R. Purple J. Olshinski T. Novak R. Tedesco G. Lainas G. Zech D.
Ross.
J.
Kni.'gh.t L. Rubenstein R. Vollmer W. Butler F. Schauer F.
Rinaldi'.Tinkler S. Niner C. Stahl S. Varga J.
Heltemes:,
AEOD T. Ippolito R. A. Clark R.
W. Reid B. J.
Youngblood A. Schwencer F. Niraglia D. Crutchfield W. Russell OELD OI&E (3)
C. Parrtsh ACRS'6$
NSlC TERA cc:
Licensee w/short cc list
kl
~ $k~
lp
Meeting Notice for D.
C.
Cook. 1 8
2 December 11, 1980 Docket Files NRC PDRMBl~
Local PDR NSIC TERA ORB1 Reading H. Denton E.
Case D. Eisenhut
'R. Purple
,T. Novak R. Tedesco
'GG. Lainas G. Zech S. Varga T. Ippolito R. Clark R. Reid D. Crutchfiel d M. Russell J. Olshinski B. J.
Youngblood A. Schwencer F. Miraglia J. Miller J.
Wetmore B. Grimes H. Collins F. Pagano S.
Ramos PProject Manager OELD OSD (3)
S.
Receptionist, Bethesda Program Support Branch Requested Staff Participants C7 CI7
~g
= Y7 CV4>>
~cn
"Ecu' 0
Cy A,n g
o~
+w*w+
F Docket Nos. 50-315 an
- 16 UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 December 11, 1980
'P MEMORANDUM FOR:
Steven A. Varga, Chief Operating Reactors Branch 81, DL E
Sydney Miner, Project Manager 0 crating Reactors Branch Pl, DL FROM:
I
SUBJECT:
P FORTHCOMING MEETING WITH INDIANA AND MICHIGAN ELECTRIC COMPANY AND AMERICAN ELECTRIC POWER COMPANY TO DISCUSS THE UTLIMATE STRENGTH OF THE D. C.
COOK CONTAINMENTS AND HYDROGEN CONTROL MEASURES Time and Date:
Attendees:
10:00 am
- Thursday, December 18, 1980 Re uested NRC Partici ants T. Novak L. Rubenstein J. Knight S. Varga F. Schauer W. Butler S. Miner F. Rinaldi C. Tinkler G. A. Horstead (Consultant)
Location:
Georgian Room Holiday Inn
'ethesda, Maryland AEP R. Jurgensen S. Milioti J. Castresana
'. Vehatedt
, J. Stevenson (Consultant)
I EMEC B. A. Swensson
Attachment:
Agenda cc:
w/attachment See next page Sydney Miner, Project Manager Operating Reactors Branch 81, DL
Attachment AGENDA A.
10:00 am - 12:00 noon Containment Ultimate Strength 1.
Introduction 2.
Capacity of Equipment Hatch Cover 3.
Comments on the Harstead Report 4.
AEP Structural Analysis of the Containment Ultimate Strength 5.
Schedule for the structural Analysis Report B.
'1:30 pm - 4:30 pm Hydrogen Control Measures l.
Introduction 2.
Research and Development Program on Hydrogen Control Measures 3.
Conceptual Design of the Distributed Ignition System 4.
Schedule for Submitting Designs and Installation of the Hydrogen Control Systems (Interim and Final)