ML20249C353
| ML20249C353 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 06/19/1998 |
| From: | Roche M GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 1940-98-20285, NUDOCS 9806290102 | |
| Download: ML20249C353 (2) | |
Text
r-
- - - - - - - - - - - - - ~ - - - - - - - - - - - - - - - - - - - - - - -
.o i
'a.
i i
t
{
GPU Nuclear,Inc.
l
(
U.S. Route #9 South NUCLEAR Post Othee Box 388 Forked Rwer, NJ 087310388 Tel 603-971-4000 (609)971-4814 June 19, 1998 1940-98-20285 U.S. Nuclear Regulatory Commission Attention: Document Control Desk '
Washbgton,DC 20555 Gentlemen:
Subject:
. Oystef Creek Nuclear Generating Station (OCNGS)
Docket No. 50-219 Facility Operating License No. DPR-16 Thermo-Lag Fire Barrier Seismic Capability As previously committed in GPU Nuclear's letter to the NRC dated April 15,1998 (1940-98-20206), this letter pmvides the current status ofcompletion of the revised calculations addressing Thermo-Lag fire barrier seismic capability and a plan and schedule for completion of this effort.
GPU Nuclear Calculation No. C-1302-814-E540-003, Revision 0, has been completed, design verified, and issued on May 28,1998. The scope of this calculation includes Thermo-Lag configurations installed with attached steel banding to structural volumes such as cable tray and conduit and their supports, and box configurations. The results of this calculation confirm the seismic capability of these Thermo Lag installations as originally described in GPU Nuclear's letter to the NRC dated November 1,1995 (C321-95-2315).
An' additional calculation is being performed to reevaluate the seismic capability of the balance of the installed Thermo-Lag configurations. The scope of this calculation will include assemblies attached with wires instead of steel bands, assemblies not mounted against a structural volume such as a tray, conduit, or clectrical box, box configurations around valves, conduit "T" wraps, and miscellaneous assemblies around supports and equipment anchor plates. This calculation will be completed and design verified by July 15, 1998. A limited number ofinstalled Thermo-Lag assemblies may require a walkdown assessment of seismic capabilityc This assessment will also be completed by July 15,1998, if required. GPU Nuclear will submit a summary of the results of this work by July 31,1998.
~t k
.O 9906290102 990619 PDR ADOCK 05000219l p
PDR 6
t:.;....
1
. O 1940-98-20285' l3 Page 2 t
2
..If any additional information is needed, please contact Mr. David J. Distel, GPU Nuclear Licensing and Regulatory Affairs, at (973) 316-7955.
Sincerely,.
I jf
X Michael B. Roche Vice President and Director L
Oyster Creek
/DJD-L
- cc: L Administrator,RegionI:
OCNGS Senior Project Manager -
~
.i D
- OCNGS. Senior Resident inspector; i
l
(
l I
i l
1
-y :.
lp-l LE _ - _ _ __.
__z__
J