ML20101N307
| ML20101N307 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 03/21/1996 |
| From: | Mccollum W DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9604080337 | |
| Download: ML20101N307 (3) | |
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DukeIbuer Company H11.utuR. AkCetus,JR j
Catau ba Nwlear Gennation ikpartment 1 ice President 000 ConcordRoad (803)8%tM0 Oflice York, SC29715 (8!13)8313126Far i
t e
March 21,1996 I
U. S. Nuclear Regulatory Commission
. ATTN: Document Control Desk
[
Washington, D. C. 20555
Subject:
Catawba Nuclear Station Docket Nos. 50-413 and 50-414 4
Reactor Trip System Instrumentation Response Times I
)
Duke Power Company letter to your staff, dated November 19,1987, "RTD Bypass
]
Removal", states that the 8 second allowance for Overtemperature A T and Oveipressure A T is divided into 6.0 seconds for the RTD and 2.0 seconds for the cabinet electronics.
This purpose of this letter is to notify your staff of a correction to the components that l
make up the 8 second allowance. Of the total 8 second delay allowance,6.5 seconds is I
attributed to the RTD and 1.5 seconds attributed to cabinet electronics.
This discrepancy was discovered while preparing the Catawba Nuclear Station Design Basis Document (DBD) for the NSSS Process Instrumentation and Control System (EIA).
t Catawba Technical Specifications Table 3.3-2, " Reactor Trip System Instrumentation
(
Response Times" specifies s 8 seconds for Overtemperature A T and Overpressure A T l
reactor trip functions. Catawba Nuclear Station meets, and is in compliance with this l
specification for total delay. There is no specification for the components of this total 8 second delay. Therefore, the change in how the total delay is divided in no way impacts plant operations or compliance to the Catawba Technical Specifications. This l
notification of the total delay split serves to correci the previous stated discrepancy and is for your awareness only.
If there are any questions, please feel free to call Jeff Lowery at (803) 831-3414.
Sincerely, l
W W. R. McCollum 080C80 l
9604080337 960321 O
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U. S. Nuclear Regulatory Commission March 21.1996 Page 2 xc:
S. D. Ebneter, Regional Administrator U. S. Nuclear Regulatory Commission 101 Marietta Street, NW - Suite 2900 Atlanta, Georgia 30323 R. J. Freudenberger Senior Resident Inspector Catawba Nuclear Station R. E. Martin Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 14H25, OWFN Washington, D. C. 20555 1
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.B U. S. Nuclear Regulatory Commission
- March 21,1996
. Page 3 P
bxc; ELL EC050
- P. R. Newton PB05E i
R. A. Hight EC08G R. S. Bondurant CNO3MC J. L. Lowery CN01RC NCMPA-1 NCEMC PMPA SREC Document Control File CN-801.01 Group File CN-801.01 l
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