ML20247L252
| ML20247L252 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/31/1989 |
| From: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19302D809 | List: |
| References | |
| TXX-89170, NUDOCS 8904050419 | |
| Download: ML20247L252 (2) | |
Text
.-.
L y]
e-
%kf
- 4. -
File # 10010 i
r C
907.2 clo
'illELECTRIC
- 3 w.s.cahm March 31, 1989 Executive Vice President U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C.
20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NO. 50-445 SUBMITTAL OF CPSES UNIT 1 SETPOINT STUDY, REVISION 1 Gentlemen:
Enclosed are:
1.
One(1)copyofWCAP-12123,"WestinghouseSetpointMethodologyfor Protection Systems," Revision 1 for CPSES Unit 1 (Proprietary 2.
One (1) copy of WCAP-12230, " Westinghouse Setpoint Methodology for
~
Protection Systems," Revision 1 for CPSES Unit 1 (Non-Proprietary) 3.
One (1) copy of the Westinghouse authorization letter, CAW-89-052 4.
One-(1) copy of a Westinghouse Proprietary Information Notice
- 5. 'One (1) copy of a Westinghouse Affidavit The Reactor Trip System (RTS) and Engineered Safety Features Actuation System (ESFAS) setpoints in Table 2.2-1 and Table 3.3-3 of the CPSES Technical
. Specifications are based on Revision 1 of the setpoint study (item 1).
Revision 1 of the setpoint study employs the same methodology as the 1984 original setpoint study except for the inclusion of conservative values for actual CPSES Measuring and Test Equipment (M&TE) uncertainties.
The 1984 setpoint study assumed a test equipment accuracy of 10% or less of the calibration accuracy as specified in the Scientific Apparatus Manufacturers Association (SAMA), Standard PMC 20.1-1973, " Process Measurement and Control Terminology".
The M&TE uncertainties are applicable to some equipment used for calibration and analog channel operational testing (ACOT) of the
. protection system transmitters and racks.
N 8904050419 890331 I
I k
- ph d
/p C PDR ADOCK 05000445
/vf A
PDC Od f
I I
JAY W
I H IC I
,g 400 North Olive Street LB 81 Dallas, Texas 73:01 l
O TXX-89170 March 31, 1989 Page 2 of 2 In addition to the M&TE uncertainties, other uncertainty values have changed to reflect the current CPSES instrumentation and calibration procedures.
Item 1 contains information proprietary to Westinghouse Electric Corporation, and is supported by an affidavit signed by Westinghouse, the owner of the information.
The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of Section 2.790 of the Commission's regulations.
Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10CFR Section 2.790 of the Commission's regulations.
Correspondence with respect to the proprietary aspects of the Application for Mthholding or the supporting Westinghouse Affidavit should reference CM!-89-052 and should be addressed to R. A. Wiesemann, Manager of Regulatory &
i Le3 slative Affairs, Westinghouse Electric Corporation, P. O. Box 355, Pituburgh, Pennsylvania 15230-0355.
Sincerely, WilliamJ. Chill,Jr.
VPC/vid Enclosures c - Mr. R. D. Mcrtin, Region IV Resident Inspectors, CPSES (3)
- - _ - - _ _