ML20090M484
| ML20090M484 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/17/1992 |
| From: | Schrage J COMMONWEALTH EDISON CO. |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9203240253 | |
| Download: ML20090M484 (2) | |
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) Commonwealth Edison C
/ 1400 Opus Place Downers Grove, Illinois 60515 March 17,1992 Dr. Thomas E, Murley, Director Office of Nuclear Reactor Regulation
- U.S. Nuclear Regulatory Commission Washington, DC 20555 Attn: Document Control Desk
Subject:
Quad Cities Station Unit 2 Sup ?lemental Information Relating to App ication for Amendment to Facility Operating Licenses DPR-29 and DPR 30, Appendix A, Technical Specifications NBC_Docke.LNom50 265 Ref trences: (1) R. Stols to T.E. Murley letter dated June 10,1991 (2) R. Stols to T.E. Murley letter dated June 28,1991 (3) J.L. Schrage to T.E. Murley letter dated Novembar 15,1991 (4) Teleconference on w, arch 17,'1992 between NRR (L. Olshan) and-CECO (J. Schrage)
Dear Dr. Murley:
In References (1) and (2), Commonwealth Edison described a proposed modification and associated proposed Technical Specifications for the High Pressure Coolant injection (HPCI) system. The modification added new vacuum breakers to the HPCI system. These vacuum breakers created a testable primary containment air boundary, and established a water seal between primary containment and the HPCI-turbine exhaust check valve (2301-45).
Reference (3) provided additional information pertaining to revised testing requirements for the 2301-45 cl:3ck valve subsequent to installation of the new vaccum breakers. During the referenced teieconference, Commonwealth Edison and NRR representatives discussed these revised requirements with respect to the criteria of Section XI of the ASME Code. The purpose of this letter is to provide information clarifying the revised testing requirements of the 2301-45 check valve.
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f Dr. Thomas E. Murley March 17,1992 The revised testing requirements provide verification that the HPCI turbine exhaust line does not experience water leaks, and thus is capable of maintaining an effective primary containment air boundary (via the torus water inventory).
Commonwealth Edison (CECO) will test the 230145 check valve during inservice inspection and testing according to Section XI of the ASME Code per 10 CFR 50.55 (g). In addition, CECO will test the 2301-45 check valve utill::ing Appendix J methodologies (without adding the leakage to the total centainment leakage) until the revised testing requirements are incorporated into the Inservice Testing Program, If there are any comments or questions, please contact me at 708-515 7283.
Respectfully,
/;[.- / [/M'f
~
John L.
age Nudea,r Licensin Administrator cc:
A. Bart Davis - Regional Administrator, Region Ill F. A. Maura - Inspector, Region ill L.N. Olshan - Project Manager, Quad Cities T.E. Taylor - Senior Resident inspector, Quad Cities
/scl:1209:36