ML20128L949
| ML20128L949 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 10/04/1996 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20128L954 | List: |
| References | |
| NUDOCS 9610150239 | |
| Download: ML20128L949 (2) | |
Text
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i PECO. NUCLEAR nco%c-l A Unit of PECO Energy
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TS 6.9.1.12 October 4,1996 i
i Docket No. 50-353 Ucense No. NPF-85 i.
E U.S. Nuclear Regulatory Commission Attn: Document Control Desk l
Washington, DC 20555 e
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Subject:
Umerick Generating Station, Unit 2 F
Issuance'of Revision 1 of the Core Operating
)
Umits Report for Reload 3, Cycle 4 Gentlemen:
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1 Enclosed is a copy of the Core Operating Umits Report (COLR), Revision 1 for Umerick Generating Station (LGS), Unit 2 Cycle 4, Reload 3. This COLR i
provides the cycle-specific parameter limits for: Maximum Average Planar Unear i-Heat Generation Rate (MAPLHGR); Minimum Critical Power Ratio (MCPR);
j ARTS MCPR thermallimit adjustments and multipliers; ARTS MAPLHGR thermal limit multipliers; Rod Block Monitor (RBM) setpoints; MAPLHGR single loop f.
operation (SLO) reduction factor; Unear Heat Generation Rate (LHGR); Turbine Bypass Valve parameters; Recirculation Pump Motor-Generator (MG) Set Scoop Tube Stops; and Reactor Coolant System Recirculation Flow Upscale Trips for LGS, Unit 2, Cycle 4. These values have been determined using NRC-approved methodology and are established such that all applicable limits of the plant safety analysis are met.
Revision 1 of the LGS Unit 2 Cycle 4 COLR contains revised Recirculation Pump Motor-Generator (MG) Set Scoop Tube Stops and the corresponding MCPR(F) and MAPFAC(F) ARTS thermal limits adjustments and multipliers. The MG Set Scoop Tube Stops are being reset to allow access to the relatively higher core flow region of the licensed operating domain (up to 110% of rated) in order to improve reactor maneuvering capability. More restrictive values of MCPR(F) and MAPFAC(F) must therefore be used for thermal limits administration to s
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ensure compliance with fuel licensing limits in the event of a recirculation flow increase event.
k 961o15o239 961oo4 PDR ADJCK 05ooo353; J
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October 4,1996 Page 2 1
The subject Revision 1 of the LGS Unit 2 COLR also incorporates the Safety i
Umit Minimum Critical Power Ratio (SLMCPR) changes based on the plant specific analysis performed by General Electric Co. (GE), for LGS Unit 2 Reload 3, Cycle 4.
This COLR Revision is being submitted to the NRC in accordance with LGS Unit 2 Technical Specifications (TS) Sectica 6.9.1.12.
If you have any questions, please do not hesitate to contact us.
Very truly yours,
[.f4 l
G. A. Hunger, Jr.
l Director - Licensing Enclosure i
cc:
H. J. Miller, Administrator, Region I, USNRC w/ enclosure N. S. Perry, USNRC Senior Resident inspector, LGS w/ enclosure j
R. R. Janati, Director, PA Bureau of Radiological Protection w/ enclosure i