ML20003D467
| ML20003D467 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 02/27/1981 |
| From: | William Jones OMAHA PUBLIC POWER DISTRICT |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| NUDOCS 8103270281 | |
| Download: ML20003D467 (4) | |
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Omaha Public Power District 1623 HARNEY a O M AN A.
NEBRASKA 68102 s TELEPMON E S36 4000 A R E A.
CODE 402 February 27, 1981 Mr. K. V. Seyfrit, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Refcience:
Docket No. 50-285
Dear Mr. Seyfrit:
Omaha Public Power District's letter dated January 30, 1981, addressed environmental qualification of safety-related electrical equipment required for cold shutdown. 3 to that letter identified several items to be resolved.
Additional information on two of the open items is attached as discussed below.
Item 7 concerned the ability of solenoids on valves HCV-238 and HCV-239 to sarvive submergence. The solenoids for these valves were installed at an elevation slightly above the projected flood level. To provide additional assurance of operability, these solenoids have been elevated two feet above the flood level and a revised qualification worksheet is attached as Enclosure 1.
Open Item 6 concerned qualification of the Conax instrument and cable penetrations. provides a description of the Dis-trict's program to resolve this concern.
Sincerely, r} @
W. C.
nes Division Manager l
Production Operations WCJ/KJM/TLP:jmm
. Enclosures cc:
U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Washington, D.C.
20555 LeBoeuf, Lamb, Leiby & MacRae
)
1333 New Hampshire Avenue, N.W.
Washington, D.C.
20036 k
8108270281
Fccility:
Fert Celldun 1
,- l Dock 2t N3.:
50-285 4,
C-128 SYSTEM COMPONENT EVALUATON WORK SIIEET s"
ENVIRONMENT DOCUMENTATO'4 QUALIFI-OUTSTAND-CATION ING EQUIPMENT DESCRIPTION Specifi-Qualif-Specifi-Qualifi-MEllIOD ITEMS Parameter cation cation cation cation System: _ Chemical and Volume Operating Control System Time Note 1 Note 1 Note 1 2
Type Test NONE Item No.: i:CV-238, 239 See Enc 1csure 18 Tempera-ture *F 288*F 340 F 1
2 Type Test NONE Component: Solenoid Pressure PSIg 60 psig 110 psig 1
2 Type Test NONE Manufacturer: ASCO Relative Model No.: NP8320A185E Ilumidity %
100%
100%
1 2
Type Test NONE Function: Remote Operation Chemical 1700 ppm 3000 ppm g
of valves Spray Boric Acid Pillo 1
2 Type Test NONE E
S Accuracy - Spec:
N/A C
8 Demon: N/A Radiation 9.9 x IO 2x10 R 1
2 Type Test NONE Service: See Function 10 yrs Location: Containment Aging N/A 10 yrs N/A 3
Type Test NONE g
Flood Level'Elev:
1000.9' Submer-Above Flood Level: Yes gence N/A N/A N/A N/A N/A NONE Documentation
References:
Notes:
- 1) Enclosure #1.
- 1) 1000 lir operation
- 2) ASCO Test Report Model AQS 21678 ITR
- 2) No special installation required coils
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i The District has completed its records file search with the Canax i
Corporation, the Fort Calhoun Station electrical penetration vendor.
The results of this records search revealed information that substanti-ates the test ~ summary report IPS-435 on radiation.
It is the District's l
opinion that, based on the test summary and the LOCA test, the Fort Calhoun Station penetrations are adequately qualified to continue oper-ation. However, due to industry information which indicates Teflon is sensitive to radiation, the District feels that a sequential test of the penetrations, as outlined in the D0R Guidelines, is in order to insure that the penetrations are completely qualified.
The District is pre-sently investigating what testing is required.
It is expected that the test plan will be completed, a testing laboratory selected, and a test schedule.will be completed within 60 days. The District will provide the NRC with a test plan and schedule when completed.
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DISTRIBUTION RESPONSES 70 r
BULLETIN 79-01 B
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IE FILES 1 COPY NRR (PHIL DIBENNIDETT0)
- 1. COPY
~F R C (C.TANZIO) 1 COPY CENTRAL FILES 1 COPY PDR 1 COPY LPDR I COPY ACCESSIONS NSIC 1 COPY 1
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