ML20093M241
| ML20093M241 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 10/12/1984 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| CON-#484-588 OL, NUDOCS 8410220004 | |
| Download: ML20093M241 (3) | |
Text
1 PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 OCT 121984 JOHN S. KEMPER
. VICE-PR ESIDENT EnesentanING AND REGE ARCM Mr. A. Schwencer, Chief Docket Nos.:
50-352 Licensing Branch No. 2 50-353 Division of Licensing U. S. Nuclear Regulatory Ccmnission Washington, D.C.
20555
Subject:
Limerick Generating Station, I' nits 1 & 2 Additional Information for Pcuer Systems Branch (PSB)
Regarding Turbine System Inspection and Maintenance Program (Draft License Condition No.13)
Reference:
Telecon between E. Tcralinson (NEC/PSB) and J. Arhar/D. DiPaolo (PECO), 10/10/84.
File:
GOVT 1-1 (NRC)
Dear Mr. Schwencer:
Pursuant to the reference telecon, this letter provides justification for observing valve mtfdon by position indication in lieu of direct observation during turbine system inservice inspection (ISI).
In accordance with FSAR Section 10.2.3.6 ccmnitments, the following valves are frequently exercised during normal operation as part of the subject ISI program: main steam stop valves, main steam control valves, cmbined intermediate valves (CIV's), and power-assisted extraction check valves. As shown on FSAR Figures 12.3-10 and 12.3-11, these valves are located in plant radiation zone 5 where the maximum design dose rete is greater than 100 mrm per hour.- Because thi3 is a high radiation zone, ALARA concerns dictate the need for minimizing personnel access into the areas where the valves are located. Therefore, remote observation of the cycling behavior of these valves is conducted in lieu of direct observation.
The subject valves are provided with reliable position indication. The main steam stop and control valves and the CIV's are equipped with 100% position indication in the control rom. The operator will cycle each valve frun the control rom and verify that the valve moves stroothly frcra its fully open position to a fully closed position by observing the position indicator. FSAR Figure 10.2-3 (sheets 5 and 6) provides a schematic of the position indication 8410220004 841012 j$
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- L &&uignitter for these valves. The power-assisted extraction check valves are provided with position indicating lights in the control rom. '1he operator exercises each valve from the control rom and verifies that the valve has left its fully open position by observing the indicating lights.
We trust that this additional information satisfies your concerns.
Sincerely, J
JHA/mlb/10118401 l.
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f.
- 4. N.
cc: Judge Helsa F. Hoyt Judge derry Harbour
-Judge'. Richard F. Cole
. Judge Christine N. Kohl Judge Gary J. Edles Judge Reginald L. Gotchy Troy B. Conner, Jr., Esq.
Ann P. Hodgdon, Esq.
Mr. Frank R. Romano Mr. Robert L. Anthony Ms. Phy111s Zitzer Charles W. Elliot, Esq.
Zort G. Ferkin, Esq.
Mr. Thomas Gerusky Director, Penna. Emergency Management Agency Angus R. Love, Esq.
I' David Wersan, Esq.
Robert J. Sugarman, Esq.
Martha W. Bush, Esq.
f.'-
Spence W. Perry, Esq.
l.'
day M. Gutierre7., Esq.
(
Atomic Safety 'a Licensing Appeal Board Atomic Safett & Licensing Board Panel Docket & Service Section Mr. James Wiggins Mr. Timothy R. S. Campbell i
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