ML11307A132
| ML11307A132 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 03/10/2011 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| Download: ML11307A132 (2) | |
Text
1 SeabrookNPEm Resource From:
Plasse, Richard Sent:
Thursday, March 10, 2011 2:21 PM To:
Cliche, Richard
Subject:
Chlorination draft RAI for Seabrook Draft RAI 3.3.2.3.4-Y
Background:
In its response to RAI 3.3.2.3.4-1, the applicant stated that the fiberglass piping components in the chlorination system exposed to raw water (LRA Table 3.3.2-4) are not subject to aging because they are constructed of either an epoxy resin or vinyl ester type of material for which the systems design temperature is below the aging limit of 170F.
Issue:
The staff noted that based on an independent review of corrosion data, chlorine can cause aging in either epoxy resin or vinyl ester based fiberglass components. The staff noted that the applicants 2009 Environmental Monitoring Report (ML1033602980) states that the sodium hypochlorite level used for the circulating water system is 15%; however, the staff recognizes that the chlorine level in the in-scope fiberglass piping may not be as high as that in the storage tank, or the in-scope piping may not be associated with the sodium hypochlorite injection source. The staff cannot make a determination of no aging effects without knowing the chlorine level in the in-scope fiberglass piping. In addition, if the chlorine values exceed 200 ppm, aging effects may need to be managed.
Request:
State the chlorine concentration, in ppm, for in-scope piping components in the chlorination system. If the chlorine concentration exceeds 200 ppm, state why no aging effect will occur or propose an aging management program for the components.
Hearing Identifier:
Seabrook_License_Renewal_NonPublic Email Number:
2219 Mail Envelope Properties (Richard.Plasse@nrc.gov20110310142100)
Subject:
Chlorination draft RAI for Seabrook Sent Date:
3/10/2011 2:21:11 PM Received Date:
3/10/2011 2:21:00 PM From:
Plasse, Richard Created By:
Richard.Plasse@nrc.gov Recipients:
"Cliche, Richard" <Richard.Cliche@fpl.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1500 3/10/2011 2:21:00 PM Options Priority:
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