ML20247H611
| ML20247H611 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/19/1989 |
| From: | George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 NYN-89064, NUDOCS 8905310273 | |
| Download: ML20247H611 (2) | |
Text
__
.w New Hampshire Gea9e s. momos Vice President Nuclear Production.
Yankee NYN-89064 May 19, 1989 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk
References:
.a)
Facility Operating License NPF-56, Docket No. 50-443-b)
" Safety Evaluation Report related to the operation of Seabrook Station Units 1 and 2" NUREG-0896, Suppleinent No. 5 dated August, 1986 c) PSNH Letter SBN-1143 dated June 26, 1986, "NRC Requests for Additional Information" G. S. Thomas to V. S. Noonan
Subject:
Pressurizer Relief Tank (PRT) Temperature Indication Gentlemen:
In Reference (c) New Hampshire Yankee (NHY) made the following commitment:
"We will show that the quench tank temperature indication will remain functional and on-scale, including the maximum expected saturation temperature, during any accident that lifts the pressurizer relief valves, or provide a range that will envelop these conditions.
If an extended range is necessary it will be installed before startup after the first refueling outage."
This commitment was made in response to the review by EG&G Idaho Inc.,
for the NRC, of NHY's compliance with USNRC Regulatory Guide 1.97.
The EG&G review was do,cumented in Reference (b), Appendix L.
The purpose of this letter is to notify the NRC that NHY has completed this commitment. A design change has been implemented which extends the indication range of the PRT (RG 1.97 identifies as a quench tank) 0 temperature instrumentation to a temperature (350 F) which is above the 0
maximum expected saturation temperature (338 F) corresponding to the PRT rupture disk pressure of 100 psig. The details of this design change are available at Seabrc,ok Station for NRC review.
f i
8905310273 890519 I
{DR ADOCK 05000443 l
PDC poo3
' I New Hampshire Yankee Division of Public Service Company of New Hampshire J
P.O. Box 300
- Seabrook, NH 03874
- Telephone (603) 474-9521
s' -
"" United States. Nuclear Regulatory Conunission May 19, 1989 i
-Attention: Document Control. Desk Page 2 l'
FSAR revicions associated with this design change will be provided in a
'. future FSAR amendment.
Very truly yours, I'
George S Thomas cc Mr. William T. Russell Regional Administrator United States Nuclear Regulat'ory Commission Region I 475.Allendale Road King'of Prussik, PA 19406 Me. Victor Nerses, Project Manager Project Directorate I-3 United States Nuclear Regulatory Commission Division of Reactor Projects
' Washington DC 20555 NRC Senior Resident Inspector
.P.O. Box 1149 Seabrook Station, NH 03874 L_=___-__-_____________-