ML022200607
| ML022200607 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, McGuire  |
| Issue date: | 05/30/2002 |
| From: | Gill R Duke Energy Corp |
| To: | Rani Franovich NRC/NRR/DRIP/RLEP |
| References | |
| IN-97-045 | |
| Download: ML022200607 (2) | |
Text
Ir anviic~R -IkIEW'OrNR7C IN 97-45 RIELATEDT DUKE'
.A36.1-1 From:
"Robert L Gill Jr" <rlgill@duke-energy.com>
To:
<RLF2@nrc.gov>
Date:
5/30/02 12:40PM
Subject:
REVIEW OF NRC IN 97-45 RELATED TO DUKE RAI 3.6.1-1 fyi - a note that Paul has put together.
Forwarded by Robert L Gill Jr/Gen/DukePower on 05/30/2002 12:39 PM R Paul Colaianni To:
Robert L Gill Jr/Gen/DukePower@DukePower cc:
Gregory D Robison/Gen/DukePower@DukePower 05/30/2002 bcc:
11:15 AM
Subject:
REVIEW OF NRC IN 97-45 RELATED TO DUKE RAI 3.6.1-1
- Bob, Below is my technical review of IN 97-45.
Let me know if you have any questions.
Sincerely, Paul Colaianni rpcolaia@duke-energy.com 704-382-5632 Lead Electrical Engineer Duke Energy, Nuclear License Renewal Project REVIEW OF NRC IN 97-45 RELATED TO DUKE RAI 3.6.1-1 Information Notice (IN) 97-45 The title of IN 97-45 is, "Environmental Qualification Deficiency for Cables and Containment Penetration Pigtails". The first descriptive statement in IN 97-45 is, "The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to alert addressees to the potential environmental qualification (EQ) deficiency for cables and containment penetration pigtails."
IN 97-45 was written based on events at the San Onofre plant in which it was found that "moisture could permeate the HRRM coaxial cable jacket during an accident" and cause specific problems. San Onofre resolved the problem by replacing the organically insulated cable and pigtails with stainless steel jacketed mineral insulated cables.
Under the discussion section, IN 97-45 states that, "geometric configuration of the cable/connector/penetration assembly combinations?may Page1
P
_ý_ _1'f
Rni Franovich-REVIEWOF NRC IN 97-45 RELATED TO DUKERAI 3.6.1-1 raj also contribute to potential environmentally induced failures."
IN 97-45 also addresses similar cables used in other monitoring system applications with the information that, "Failure of degradation of these items during or following design-basis accidents could significantly affect the functional performance of safety-related equipment."
IN 97-45 also mentions that, "the insulation resistance of Rockbestos coaxial cables may be too low to meet specifications for use in General Atomics monitor circuits?. The low resistance of these?cables was the subject of a 10 CFR Part 21, "Reporting of Defects and Noncompliance,"
notification by General Atomics?"
IN 97-45 does not mention that cable insulation aging degradation has any relation to this incident, its evaluation, or its resolution.
DUKE RAI 3.6.1-1 DUKE RAI 3.6.1-1 pertains to specific non-EQ electrical cables that may be subject to premature aging due to exposure to adverse localized equipment environments. Non-EQ cables are either not exposed to harsh accident conditions or are not required to remain functional during or following an accident to which they are exposed.
CONCLUSION:
IN 97-45 is related to:
-- a potential EQ deficiency
- moisture permeating a cable jacket during or following a loss-of-coolant accident
- geometric configuration of installed components
- a Part 21 notification regarding potential incompatibility of specific components IN 97-45 is NOT related to:
-- Non-EQ cables
- aging of the cable insulation IN 97-45 has no relevance to Duke RAI 3.6.1-1 Jýaqý 2 1 k
Rjrý'L F1 n6ic REVI*EWg. NRC[-
9..5REA T _O DUKE RAI 3.6-.1-.1