ML18085A547
| ML18085A547 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 12/30/1980 |
| From: | Ross W Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8101230350 | |
| Download: ML18085A547 (6) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 December 30, 1980 Docket No. 50-272 By letter dated November 10, 1980 the licensee advised the staff that some masonry walls at the Salem Station were not erected per design.
This matter was reviewed during a site visit by members of the staff on November 20, 1980 and resolved for Unit 1 by requiring the licensee to assure that all walls were constructed to meet the licensee's criteria before Unit l returned to power after the current r*efueling outage. Additionally, the license~ will submit its analysis to the staff with the understanding that additional modifications may be required by the staff to meet NRC seismic criteria.
Subsequently, the Senior Resident Inspector identified walls in the recently constructed 11A 11 Building (Control Facil ity)and the adjoining walkway that appeared to jeopardize the integrity of the RWST and AWST of.Unit 1 because these walls were seismically underdesigned.
When the licensee verified that some of these walls dia not meet PSE&G design criteria the Senior Resident Inspector placed a hold on Unit l changing modes until ECCS capability of the RWST and AFWST was assured.
The meeting held on December 5, 1980 was called to review this situation and to review the licensee's proposals for upgrading the seismic design of the walls of these two structures. A list of attendees is attached.
The primary seismic concerns related to these two structures are that their heights (40' for 11A 11 Building and 33' for the walkway) and their proximities to the RWST and AFWST of Unit 1 could jeopardize the integrity of these tanks or associated components (level indicator, level taps, and suction lines) during a safe shutdown eart~quake (SSE).
These structures were built for purposes not directly related to the operation of the plant and, therefore, were not designed to protect safety-related equipment.
Their walls were formed from hollow concrete blocks (ungrouted) and with 11 Durawall 11 reinforcement every other horizontal course.
The licensee believes that these walls, as built, will not.exceed their struc-tural integrity during an SSE even though they were not seismically -
- r_
designed.
These walls are not considered to be tornado barriers for the nearby water tanks for Units l and 2.
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Meeting Summary for
- salem l The licensee proposes to install additional steel to both structures to upgrade them to meet PSE&G seismic design.
The walkway will be modified by December 20, 1980 and the "A: Building within ten weeks.
Further modification of the "A: Building is proposed to add to the strength of the original steel framing.
The ljcensee requested that the staff permit Unit l to initiate warmup procedures in Mode 4 (Hot Shutdown) and Mode 3 (Hot Standby} while theupgrading was being completed and to proceed into Mode 2 (Startup) and Mode l (Power Operation) after the structures had been upgraded to meet the PSE&G criteria and while the staff's review was being performed.
The bases for these requests were as follpws:
- 1.
The ultimate structural capacity of the underdesigned walls would not be exceeded during an SSE.
- 2.
The decay heat in the core at the present time is relatively low since the plant has been shut down for three months and one third of the fuel elements are new.
The core doesn't require forced cooling.
- 3.
In the case of a LOCA before the fixes are made, blowdown could be.
matched with normal charging makeup capability using water from the primary water and boron tanks rather than the RWST.
At the conclusion of the licensee's presentation and the staff's caucus the NRR representatives recommended that IE representatives approve the 11censee's proposed actions.. The Senior Resid.en't Inspector drafted an action letter to this effect and obtained oral concurrence from hi1s management in Region I.
This Action Letter includes the fol lowing requirements for both tt:ie exterior walls reviewed in this meeting and the interior walls reviewed during the November 20, 1980 site visit.
- 1. Prior to achieving Mode 4, all plant interior masonry walls will be modified or repaired to conform to PSE&G seismic design criteria.
(The licensee stated that this work was scheduled to be completed by December 6, 1980.)
- 2.
Prior to achieving Mode 2 (and Mode l), the *east wall O'f the "A" Building and the walkway walls will be modified,to conform to PSE&G seismic design criteria.
- 3.
Until all walls are upgraded to PSE&G design criteria, Unit 1.
wil 1 be brought to Mode 5, within the schedule of Technical Specification 3.0.3, upon first detection of a seismic event.
I Meeting Summary for
- Sal em 1 e.
The staff reiterated that its interim design criteria differed from that of PSE&G as to the allowable residual tension of a masonry wall.
Consequently, the staff may require additional modifications to be made at the conclusion of its review of the licensee's analysis which is to be subm1ttep in response to IE ;~l~
. ~
William J. Ross, Project Manager Operating Reactors Branch #1 Division of Licensing
Attachment:
List of Attendees cc: w/attachment See next page
-1
../
NRC W.-J. Ross F. Schauer K. C. Leu R. E. Lipinski D. C. Jeng J. B. Henderson L. J
- Norr ho l m J. Kerrigan K. Herring LIST OF ATTENDEES Attachment PSE&G E. A.Liden R. R. Bast R. L. Mittl J. M. Zupko, Jr.
F. M. Linn D. J. Jagt F. Shen R. Crapo L. A. Reiter
Meeting Summary for Salem 1 Docket Files NRC PDR Local PDR NSIC TERA ORBl Reading H. Denton E. Case D. Eisenhut R. Purple T. Novak R. Tedesco G. Lainas G. Zech
- s. Varga T. Ippolito R. Cl ark R. Reid D. Crutchfield
- w. Russell J. Olshinski B. J. Youngblood A. Schwencer F. Miraglia J. Miller J. Wetmore B. Grimes
- s. Schwartz F. Pagano
- s. Ramos Project Manager OELD OSD (3)
- s. Showe, I&E
- c. Parrish R. Fraley,. ACRS (16)
Staff Participants Licensee Short Service List
- e.
- Mark J. Wetterhahn, ~Esquire Conner, Moore and Corber Suite 1050
~
1747 Pennsylvania Avenue, NW Washington, o. C.
20006
. Richard Fryling, Jr., Esquire Assistant General Solicitor Public Service Electric and Gas Company 80 Park Place Newark, New Jersey 07101 Gene Fisher, Bureau of Chief Bureau of Radiation Protection.
380 Scotch Road Trenton, New Jersey 08628 Mr. Hank Midura, Manager Salem Nuclear Generating Station Public Service Electric and Gas Company 80 Park Place Ne\\#tark, New Jersey 07101 Mr. R. L. Mittl, General Manager licensing and Environment Public Service Electric and Gas Company 80 Park Pl ace Newark, New Jersey 07101 Salem Free Library 112 West Broadway Salem, New Jersey 08079 Leif J. Norrholm, Resident Inspector Salem Nuclear Generating Station
- u. s. Nuclear Regulatory Commission Drawer I Hancocks Bridge~ New Jersey 08038 Peter A. Moeller Nuclear Licens~ng Engineer Public Service Electric and Gas "Company 80 Park Plaza - l5A Newark, New Jersey 07101
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