ML20134E582
| ML20134E582 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 08/16/1985 |
| From: | Mittl R Public Service Enterprise Group |
| To: | Butler W Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8508200335 | |
| Download: ML20134E582 (8) | |
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O I)#S G Cornpany Pubhc SerVce Etectric and Gas 80 Park Plaza, Newark, NJ 07101/ 201430-8217 MAILING ADDRESS / P.O. Box 570, Newark, NJ 07101 Robert L. Mitti General Manager Nuclear Assurance and Regtilation August 16, 1985 Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 Attention:
Mr. Walter Butler, Chief Licensing Branch 2 Division of Licensing Gentlemen:
RESPONSE TO SQRT CONFIRMATORY ISSUES 1, 2,
4 and 6 AND SQRT GENERIC OPEN ISSUE 1 HOPE CREEK GENERATING STATION DOCKET NO. 50-354 Pursuant to the NRC, PVORT/SQRT audit held at the Hope Creek Generating Station on May 7-10, 1985, Public Service Electric
& Gas Company hereby submits responses to SQRT Confirmatory Issue 1 - NSSS-2 HCU OS-213-0643 Piping Flexibility Evaluation (Attachment I), SQRT Confirmatory Issue 2 - NSSS-2 HCU OS-213-0643 HCU Piping Support Detail (Attachment II), SQRT Con-firmatory Issue 4 - BOP-2 HVAC damper lHD-9603B1 (Attachment III), SQRT Confirmatory Issue 6 - NSSS-9 RPV Level and Pres-sure Rack; 106-026/H21-PO26 ( Attachment I) and SQRT Generic Open Issue 1 - NSSS-1 Core Spray Pump 1AP-206/E21-C001 (Attach-ment V).
The response to the remaining SQRT Confirmatory Issue 5 -
DSER Open Item 103/SER Open Item 2,
" Equipment Qualification" will be submitted to the NRC by September 16, 1985.
8508200335 850816 PDR ADOCK 05000354 A
PDR The Energy People
)1 M 491,' i' *; 4 44
e Director of Nuclear 2
8/16/85 Reactor Regulation Should you have any questions in this reaard, please contact us.
Very truly yours, l.L.FFbll r
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Attachment I - Response to SQRT Confirmatory Issue 1 Attachment II - Response to SQRT Confirmatory Issue 2 Attachment III - Response to SQRT Confirmatory Issue 4 Attachment IV - Response to SQRT Confirmatory Issue 6 Attachment V - Response to SQRT Generic Open Issue 1
~
C D.H. Wagner.
USNRC Licensing Project Manager A.R.
Blough USNRC Senior Resident Inspector
ATTACHMENT I SQRT CONFIRMATORY ISSUE 1 NSSS-2 HCU OS-213-0643 PIPING FLEXIBILITY EVALUATION The flexibility evaluation of the insert and withdrawl piping in the vicinity of the hydraulic control units which was in progress at the time of the audit has been completed.
The piping was analyzed for anticipated dynamic displace-4 ments and found to be within code allowable stress limits.
l Very flexible runs of piping are being stiffened by install-ing supports as required.
Design Change Packages (DCPs) 7427 and 7429 through 7432 detailing these stiffened hanger designs have been issued.
Approximately fifty percent (50%) of the construction per the DCPs mentioned above is complete.
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ATTACHMENT II
-SQRT CONFIRMATORY ISSUE 2 NSSS-2 HCU OS-213-0643 HCU PIPING SUPPORT DETAILS The piping support hanger had not yet been completed by construction when the walkdown occurred.
This support (SP15Q3 on isometric l-P-BF-249) is now complete and the line in question has been supported.
ATTACHMENT III SQRT CONFIRMATORY ISSUE 4 BOP-2 IIVAC DAMPER - lHD-9603B1 Construction installation has been completed for all four ITT damper actuation supports required by Design Change Package (DCP) - 299.
ATTACHMENT IV SQRT CONFIRMATORY ISSUE 6 NSSS-9 RPV LEVEL AND PRESSURE RACK; 106-026/H21-PO26 Construction installation of the SST tubing support has been completed.
ATTACHMENT V
SQRT GENERIC OPEN ISSUE 1 NSSS-1 CORE SPRAY PUMP 1AP-206/E21-C001 This issue concerns the calculation of relative displacements using the response spectra method.
This method was used by GE on two NSSS pumps, the RHR Pump (Ell-C002) and Core Spray Pump (E21-C001).
In response to the Generic Open Issue, GE has recalculated relative displacements at the modal level for all significant modes, and then combined the results by absolute. sum.
These dynamic relative displacements were then added to the static relative displacements to obtain the total relative displace-ments.
The results of both the original calculations and the recal-culations are presented in Table 1, attached.
All displace-ment values, both original and recalculated, are well within allowables.
The detailed reanalysis are contained in GE DRF E12-00047-1 for the RHR Pump, and DRF E21-00029-1 for the CS Pump.
These DRFs are available for audit.
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TABLE 1 CALCULATION OF RELATIVE DISPLACEMENTS FOR RHR AND CS PUMPS RHR Pumo:
Previous 1v After Reanelvsis Dynamic Total Dynamic Total Displacement Between 8.276 8.282 11.038 11.044 Impeller and Bowl (Allowable = 20.0)
Between Shaft and
.6113 3.75 1.393 4.807 Mech Seal (Allowable = 51.0)
CS Pump:
Displacement Between
.0585
.4291
.0844
.4559 Impeller and Bowl (Allowable = 9.5)
Between Shaft and
.5630 3.044
.9994 3.575 Mech Seal (Allowable = 51.0) i Note: All dimensions are in mils.
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