ML20034H699
| ML20034H699 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/15/1993 |
| From: | Schrage J COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9303190251 | |
| Download: ML20034H699 (2) | |
Text
- -
- ' 'a '.
/
'\\
Commonwcrith Edison i
/ 1400 Opus Puc3
\\
[ Downars Grove, Illinois 60515
-\\
/
March 15, 1993 U.S. Nuclear Regulatory Commission Washington, DC 20555 Attn: Document Control Des'k
Subject:
Quad Cities Station Units 1 and 2 Status Update: Safety Related Contact Testing Adequacy Program NRC Docket Nos. 50-254 and 50-265
References:
(a) H.J. Miller to Cordell Reed letter dated January 24, 1989 (b) H.J. Miller to Cordell Reed letter dated March 8, 1989 (c) T.J. Kovach to A. Bert Davis letter dated April 11, 1989 (d) H.J. Miller to Cordell Reed letter dated October 9,1992 (e) T.J. Kovach to USNRC letter dated December 24, 1992 (f) Meeting between CECO (J. Schrage, et al) and NRC Region III (R. Gardner, et al)
(G) Teleconference between CECO (J. Schrage) and NRC Region III (D. Butler) on March 3, 1993 In References (a) and (b), the NRC forwarded the results of a special safety inspection at Zion Station, and the violations arising from that-inspection.
The second violation which was documented in Reference (b) discussed the failure to adequately test logic system contacts at Zion Station.
In response to this violation (Reference (c).), Commonwealth Edison (CECO) described the plans for a programmatic review of Safety Related contact testing at Zion Station.
This description included the method for dispositioning contacts which were required to be tested by the Technical Specifications as part of a channel functional logic test. CECO has initiated a similar programmatic review at Dresden, Quad Cities and LaSalle Stations.
The NRC reviewed the Dresden Station Safety Related Contact Testing Adequacy (SRCTA) program in, Reference (d), and CECO provided a status update in Referente (e).
Y
.i The SRCTA program at Quad Cities Station is currently in-progress.
CECO has discussed the status of the program with the NRC (References (f) and (g)), including the-proposed method for dispositioning contacts which are required to be tested as part of a Technical Specification Logic-System Functional Test (LSFT).
The purpose of this letter is to describe the method for dispositioning LSFT contacts, as discussed in the Reference (g) teleconference.
l 1Dnneo h(;){$
9303190251 930315-
} O, PDR ADOCK 05000254 G
PDR 2b39:2
h
-...~,.
f' U.S. Nu;1 ear / Regulatory. Commission'
- 2' --
-March 115,;1993 The method for dispositioning LSFT contacts will' depend upon the
' current. testing methods in relation to one of.three different scenarios.
i 1
- These scenarios,-including the dispositioning method for each scenario, are; described below:
1 Scenario 1 Current' methods of contact testing demonstrate functionality of the circult, and overlapping tests demonstrate testing of.
Individual contacts.
CECO will enhance existing procedures, where appropriate, and
' test contacts at the next scheduled surveillance.
Scenario 2 Current methods of contact testing demonstrate functionality of 1
the circult;' overlapping tests do not exist, or do~not demonstrate testing of individual contacts.
CECO will:
q 1.
Immediately notify the Resident Inspector Staff; and, 11.
Test the individual contacts at power; or,-
i 111. Provide justification why the contacts cannot be tested at power.
This-justification can be based upon: any unusual plant configuration necessary to perform testing, personnel:
a safety, and/or increased potential for challenges.to safety.
systems; and, i v.. Test the individual. contacts at the next outage.of sufficient duration (ie: add the required; tests to the "QCrash" schedule).
Scenario 3-Current methods of contact testing do not demonstrate functionality of the circuit.
CECO will immediately notify the Resident Ins'pector Staff; enter
.l the appropriate Technical Specification.LCO and~ test the contacts immediately; or satisfy the LCO Action Statement.
l;
^
If there are any. questions or comments, please direct them to John-L.
Schrage at 70!f-663-7283.
,y
/
j ohn L. l rage j'
Nucle r Licensing Administrator cc: A. Bert Davis, Regional" Administrator-RIII C. Patel. Project' Manager-NRR-T.E. Taylor, Senior Resident Inspector-Quad Cities a
R. Gardner, Section Chief-RIII - DRS D.' Butler, Reactor Inspector-RIII - DRS
-l Office of Nuclear Safety-IDNS i2539 3 a
.