ML20128M881
| ML20128M881 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 05/17/1985 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| (RDC-124(85)), 220, NUDOCS 8506030108 | |
| Download: ML20128M881 (2) | |
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d onb f THE CLEVELAND ELECTR P.O. BOX 5000 - CLEVELAND. OHIO 44101 - TELEPHONE (216) 622-9800 - lLLUMINATING BLOG. - 55 PUBLICSQUARE Serving The Best Location in the Nation MURRAY R. EDELMAN N% CLEAR May 17, 1985 PY-CEI/OIE-0045 LQ Mr. James G. Keppler Regional Administrator, Region III office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE:
Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Collection of Condensate in the RCIC Steam Supply Line
[RDC 124(85)]
Dear Mr. Keppler:
This is the final report pursuant to 10CFR50.55(e) on the significant deficiency associated with the collection of condensate in the Reactor Core Isolation Cooling (RCIC) steam supply line.
Mr. J. McCormick-Barger of your office was notified on January 23, 1985, by Mr. T. A. Boss of the Cleveland Electric Illuminating Company (CEI) that this problem was being evaluated per Deviation Analysis Report 220.
Previous correspondence on this topic was transmitted to your office on February 21 and April 18, 1985.
Description of Deficiency Two locations exist in the Reactor Core Isolation Cooling (RCIC) l steam header where condensate can collect.
One location is up-stream of the RCIC inboard isolation valve, lE51F063.
Upon initiation of RCIC, the inboard isolation valve opens allowing the steam / condensate to flow into the system piping.
The second location is in the same line, which also supplies steam to the residual heat removal ~ (RHR) heat exchangers in the steam condensing mode.
Condensate could collect upstreara of the heat exchangers isolation valves, lE12F052A&B.
Upon initiation of RHR in steam condensing mode, this collected condensate could exhibit slug type flow into the piping, the inlet pressure regulator or the heat exchanger tubes.
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1Mr. Ja=:s G. Keppler. May 17, 1985 Analysis of' Safety Imolication
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'Condensat.e collection in. the RCIC steam supply line could result
.in damage.to RCIC system components upon RCIC initiation or RHR system components upon initiation of RHR in the steam condensing mode.
. Corrective Action ECN 27859-86-1842 has been issued to provide for drainage of condensate trapped upstream of the RCIC steam supply line inboard isolation valve,-lE51F063.
This design change will. provide continuous draining of the volume to the main steam line drain system.
The System Operating Instruction for the initiation of the RHR in the steam condensing mode is being modified.
The revision will require draining of the condensate trapped upstream of the RHR heat exchanger inlet valves prior to fully opening the inlet valves.
Documentation of the corrective actions taken to correct this deficiency will be available for NRC review when the work is complete.
This is The Cleveland Electric Illuminating Company's final' report on this deficiency.
If you have any questions, please:
call.
qincerely,
&Q1I]
Murra%
. Edelman Vice President MRE:pab.
Nuclear Group cc:
Mr. J. A Grobe USNRC, Site Office (SBB50)
Mr..D. E. Keating USNRC, Site Office (SBB50)
' Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 U.S.- Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555-Records Center, SEE-IN Institute of Nuclear Power Operations
--1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339
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