ML20212D644
| ML20212D644 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 02/26/1987 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-1453, NUDOCS 8703040161 | |
| Download: ML20212D644 (3) | |
Text
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ECTRIC E
1901 Gratiot Street St. Louis Donald F. Schne $
February 26, 1987 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C. 20555 Gentlemen:
ULNRC-14 53 DOCKET NUMBER 50-483 CALLANAY PLANT REVISION TO TECHNICAL SPECIFICATIONS CONCERNING MAIN STEAM AND MAIN FEEDWATER ISOLATION VALVES
Reference:
ULNRC-1377 dated 9-29-86, same subject The referenced' letter transmitted a Technical Specification amendment request:
to withdraw previous change requests related to Type C test extensions and editorial-changes to valve descriptions; to clarify Technical Specification Tables 3.3-5 and 3.6-1 regarding Main Steam and Main Feedwater Isolation Valve operability and closure time requirements; and to sdd a new Specifica*.icn 3/4.7.1.7 to define requirements for the Main Feedwater Isolation Valves.
Provided herewith is a revised Bases page for the new Specification 3/4.7.1.7.
These revisions were the subject of recent discussions with NRC Staff.
If there are any questions, please contact us.
Very truly yours, Donald F.
Schnell GGY/ lad 8703040161 870226 PDR ADOCK 05000483 P
PDR-Ad I
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i Maihng Address: P.O. Box 149. St. Louis, MO 63166
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cc Gerald Charnoff,.Esq.-
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Shaw, Pittman, Potts & Trowbridge 2300 N. Street, -N.W.
Washington, D.C.
20037 Dr.
J.-O. Cermak-'
CFA, Inc.
3356._Tanterra~ Circle c.c
' Brookeville, J IID - 20833 W. L.
Forney Division of Projects and Resident Programs, Chief, Section lA U.S.-. Nuclear Regulatory Commission.
Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Bruce Little Callaway Resident Office U.S. Nuclear Regulatory Ccmmission RR#1 Steedman, Missouri
- 65077, Paul O'Connor (2)
Office of Nuclear Reactor Regulation
'U.S.' Nuclear Regulatory Commission Mail Stop 316
-7920 Norfolk Avenue Bethesda, MD 20014 Ron Kucera, Deputy Director Department'of Natural Resources P.O. Box 176
. Jefferson City, MO 65102 Manager, Electric Department Missouri Public Service-Commission P.O. Box 360 Jefferson City, MO 65102 I
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Attachment o
ULNRC-1453 l
I I
BASES 3/4.7.1.7 FEEDWATER ISOLATION VALVES
- 1) provides OPERABILITY of the feedwater isolation valves:
h a pressure boundary to permit auxiliary feedwatar addition in t e event of a main steam or feedwater line break inside containment; and 2) ensures that no more than one steam generator will blo System positive reactivity effects of the Reactor Coolant limits the pressure cooldown associated with the blowdown, and b) OPERABILITY of the feedwater isolation rise within containment.
valves within the closure times of the Surveillance Requirements is consistent with the assumptions used in the safety analysis.
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