ML20247L792
| ML20247L792 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 07/27/1989 |
| From: | Bournia A Office of Nuclear Reactor Regulation |
| To: | Morris K OMAHA PUBLIC POWER DISTRICT |
| References | |
| TAC-73430, NUDOCS 8908010350 | |
| Download: ML20247L792 (3) | |
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- 47 July 27, 1989 Docket No.' 50-285 Mr. Kenneth-J. Morris
-; Division Manager - Nuclear Operations Omaha Public Power District 1623 Harney Street
. Omaha', ' Nebras ka 68102
Dear Mr. Morris:
SUBJECT:
RESPONSE TO QUESTIONS ON EFFECT OF HIGH PRESSURE SAFETY INJECTION HEADER CROSS-CONNECT VALVES ON HOT LEG INJECTION (TAC 73430)
. Your ' letter dated' June 16, 1989 responded to questions raised in the staff's safety evaluation, dated January 10, 1989, addressing the effect of.High Pressure Safety Injection header cross-connect valves on hot leg injection at the Ft. Calhoun Station. The staff completed its review of your responses and, with one exception, found that they adequately address the outstanding questions.
The one exception was that in your June 16th response you-did not address the
-actual flow rate via the alternate hot leg injection path. Consequently, the staff.could not fully evaluate the adequacy of this path for boron control and
- as'a.means of providing adequate flow for safe pump operation. A telephone
. conversion between the reviewer and members of your staff provided the information that the flow rate is 420 gpm at a reactor coolant system pressure of O psig, and 200 gpm at 155 psig. The staff concluded that these flow rates are high enough that the potential concerns are resolved. Consequently, the subject topic is fully resolved and closed.
' Sincerely, t
/s/
Anthony Bournia, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation ec: See next page' DISTRIBUTION
- Dockettilef HRC PDR Local PDR PD4 Reading G. Holahan ADR4 F. Hebdon P. Noonan Anthony Bourina 0GC-Rockville E. Jordan B. Grimes ACRS(10)
PD4 Plant File i
TAC NO. 73430 TONY PD4/PM PD4/D4).
PD4/LQb PNoonan ABournia:cs FHebdon 07/j]/89 07/27/89 07/;O/89 l l 1
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- E WASHINGTON, D. C. 20555 a..e July 27,1989 Docket No. 50-285 Mr. Kenneth J. Morris Division Manager - Nuclear Operations Omaha Public Power District 1623 Harney Street Omaha, Nebraska 68102
Dear Mr. Morris:
SUBJECT:
RESPONSE TO QUESTIONS ON EFFECT OF HIGH PRESSURE SAFETY INJECTION HEADER CROSS-CONNECT VALVES ON H0T LEG INJECTTa" (TAC 73430)
Your letter dated June 16, 1989 responded to questions raised in the staff's safety evaluation, dated January 10, 1989, addressing the effect of High Pressure Safety Injection header cross-connect valves on hot leg injection at the Ft. Calhoun Station. The staff completed its review of your responses and, with one exception, found that they adequately address the outstanding questions.
The one exception was that in your June 16th response you did not address the actual flow rate via the alternate hot leg injection path. Consequently, the staff could not fully evaluate the adequacy of this path for boron control and as a means of providing adequate flow for safe pump operation. A telephone conversion between the reviewer and members of your staff provided the information that the flow rate is 420 gpm at a reactor coolant system pressure of 0 psig, and 200 gpm at 155 psig. The staff concluded that these flow rates are high enough that the potential concerns are resolved. Consequently, the subject topic is fully resolved and closed.
Sincerely, Ga Q 0 Stas Anthony Bournia, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation cc: See next page
,cV l
Mr. Kenneth J. Morris Fort Calhoun Station Omaha Public Power District Unit No. 1 CC:
Harry H. Voigt, Esq.
LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, NW Washington, D.C.
20036 Mr. Jack Jensen, Chairman Washington County Board of Supervisors Blair, Nebraska 68008 Mr. Phillip Harrell, Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 309 Fort Calhoun, Nebraska 68023 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations Combustion Engineering, Inc.
12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Harold Borchert, Director Division of Radiological Health Department of Health 301 Centennial Mall, South P.O. Box 95007 Lincoln, Nebraska 68509 Mr. G. R. Peterson, Manager Fort Calhoun Station P. O. Box 399 i
Fort Calhoun, Nebraska 68023 l
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