ML20214T831
| ML20214T831 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/10/1986 |
| From: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 0131P, 131P, 4410-86-L-0196, 4410-86-L-196, IEB-86-003, IEB-86-3, NUDOCS 8612090024 | |
| Download: ML20214T831 (2) | |
Text
-
e n
GPU Nuclear Corporation Nuclear
- , ors
- :;48o Middletown, Pennsylvania 17057 0191 717 944 7621 4
TELEX 84 2386 Writer's Direct Dial Number:
(717) 948-8461 4410-86-L-0196 Document ID 0131P November 10, 1986 Office of Inspection and Enforcement Attn: Dr. T. E. Murley Regional Administrator US Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406
Dear Dr. Murley:
Three Mile Island Nuclear Station, Unit 2 (TMI-2)
Operating License No. DPR-73 Docket No. 50-320 IE Bulletin 86-03 IE Bulletin 86-03 addressed the common cause failure of emergency core cooling system (ECCS) pumps due to the failure of an air-operated isolation valve in minimum flow recirculation line.
GPU Nuclear has reviewed the information presented in IE Bulletin 86-03 and has determined that the single failure mode described is not applicable to TMI-2 in the current recovery mode.
The ECCS High Pressure Injection (FPI) pumps MU-P-1A/18/lC are disabled. Additionally, IE Bulletin 86-03 would not be applicable to TMI-2 under normal operating conditions.
The HPI pumps isolation valves MU-V-36 and MU-V-37 are motor-operated valves that are designed to fail "as-is" when the control circuits lose electrical power.
Therefore, loss of the control signal to these valves would not automatically result in closure of the valves and loss of the recirculation flow path.
8612090024 861110 EDR ADOCK 05000320 E
PDR f
GPll Nuclear Corporation is a subsidiary of the General Public Utilities Corporation D
j
'Dr; Murley November 10, 1986
-.I 4410-86-L-0196 I
Based on the above, no further action is required relative to TMI-2.
Sincerely, I
1
. R. Stander r Vice President / Director, TMI-2
)
FRS/CI/eml Attachment cc: Director - TMI-2 Cleanup Project Directorate, Dr. W. D. Travers j
i
p.
N pg48\\
P 33 B6 gG ge\\
I i
l I
l l
t l
f I
l I
t i
i 1
I r
e 9
9 te,ee
._m--
-.yr y
w,
-c-,
w-- - -,---
---,----,. -,-- - - - +. - - - - - ~ - - -,