ML102871177
| ML102871177 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 11/23/2009 |
| From: | - No Known Affiliation |
| To: | Office of Information Services |
| References | |
| FOIA/PA-2010-0116 | |
| Download: ML102871177 (3) | |
Text
8.1 Prior spray event leading to low pressure inside containment IP re n a y May identify additional perspective on this issue as RCA related efforts proceeds
==
Description:==
The containment spray event of October, 1992 resulted in an injection of about 9400 gallons of borated water into the reactor building (RB) atmosphere. The event resulted in a decrease in RB internal pressure.
Data to be Collected and Analyzed:
- 1. Review problem report of October 16, 1992 and associated containment atmosphere pressure graph.
(Exhibit 1)
- 2. Review Design bases for containment, FSAR Chapter 5. (Exhibit 2)
Verified Refuting Evidence:
Verified Supporting Evidence:
The RB pressure excursion from the 1992 containment spray event did not result in the containment pressure exceeding the design criteria for the RB.
Reviewed by: Marci Cooper, 352-795-6486, ext 1030 - PII CR3 Team Office 11/23/2009 pI' P-rope ar*,y anid Cc..... elldI, 2_009. Du not relea-c-tcd-fird pary with'out-11/23/200 1
r I
8.5 Containment depressurization due to inadequate purging operation Da May identify additional perspective on this issue as RCA related efforts proceeds
==
Description:==
It was reported by a former CR3 operator (Dave Jones) that an event occurred in the late 1980's or early 1990's during which a purge exhaust fan was operating with the inlet purge valve closed. This resulted in a vacuum in the containment building.
Data to be Collected and Analyzed: Review event data, equipment information, and conduct personnel interviews if possible.
- 1. Dave Jones (former CR3 operator) interview documented November 10, 2009 placed the event to the late 1980s to early 1990's. (Exhibit 1)
- 2. No NCR to document the event has been found. CR3 self-evaluation unit has exhausted all databases in their document search. Estimate maximum vacuum achievable with purge fan operation. (Exhibit 1, pg 1)
- 3. Purge fan vender manuals: VTMA 231 (Exhibit 2, pgs 2-5)
- 4. Make/model of the purge fan: Joy Manufacturing Model 36-26.5-1770 axial vane fan. (Exhibit 1, pgs 2-5)
- 5. Review containment design bases, FSAR Section 5. (Exhibit 3)
Verified Refuting Evidence: A calculation of a Verified Supporting Evidence:
postulated worse-case vacuum generated by the purge fan demonstrated that a vacuum of 1 psi is less than the design bases for containment.
Reviewed.by Dr. Patrick Berbon, 352-795-6486 ext.
1030- P11 CR3 Team Office I
P4IM PF upL, and Confid.nti.l, 200.. D, 11/23/2009 nzet-release t..a third party,ithout 1
8.5 Containment depressurization due to inadequate purging operation D
na May identify additional perspective on this issue as RCA related efforts proceeds
==
Description:==
It was reported by a former CR3 operator (Dave Jones) that an event occurred in the late 1980's or early 1990's during which a purge exhaust fan was operating with the inlet purge valve closed. This resulted in a vacuum in the containment building.
Data to be Collected and Analyzed: Review event data, equipment information, and conduct personnel interviews if possible.
- 1. Dave Jones (former CR3 operator) interview documented November 10, 2009'placed the event to the late 1980s to early 1990's. (Exhibit 1)
- 2. No NCR to document the event has been found. CR3 self-evaluation unit has exhausted all databases in their document search. Estimate maximum vacuum achievable with purge fan operation. (Exhibit 1, pg 1)
- 3. Purge fan vender manuals: VTMA 231 (Exhibit 2, pgs 2-5)
- 4. Make/model of the purge fan: Joy Manufacturing Model 36-26.5-1770 axial vane fan. (Exhibit 1, pgs 2-5)
- 5. Review containment design bases, FSAR Section 5. Exhibit 3)
Verified Refuting Evidence: A calculation of a Verified Supporting Evidence:
postulated worse-case vacuum generated by the purge fan demonstrated that a vacuum of 1 psi is less than the design bases for containment.
Reviewed by Dr. Patrick Berbon, 352-795-6486 ext.
1030 - P11 CR3 Team Office 11/23/2009
- r retr'and Csnfidcntial, 2000. Do h-oti *J,_c,
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t d "u 1 l1u a* y.....ithout*
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