ENS 44840
ENS Event | |
|---|---|
00:02 Feb 9, 2009 | |
| Title | Test Reactor Exceeded Licensed Power Limit During Calibration |
| Event Description | Performing routine thermal power calibration of nuclear instruments at indicated power of 230 kW per SOP-33. Calculation indicated actual power of 263 kW after collecting data. Licensed power limit is 250 kW.
No apparent cause for the calibration error. [The previous] calibration was successfully done on January 16, 2009. The reactor was shutdown. All systems functioned as required. The licensee noted that the pool temperature was about 7 degrees Celsius cooler than the historical pool temperature. The licensee will notify the NRR Project Manager and the State of Oregon.
The licensee re-performed the thermal calibration per SOP-33 to check results obtained on 2-08-09. The difference this time is the licensee extended the calibration for a much longer period (approximately 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />). The licensee has determined that data obtained during the first 30 to 60 minutes of calibration indicated erratic information. [The licensee has] concluded that when [the reactor was] operating on 2-08-09 at an indicated power of 230 KW, actual power was 245 KW. [This power] is less than [the reactor's] licensed limit of 250 KW. Thus Reed did not violate its licensed power limit on 2-08-09 as previously reported. SOP-33 will be revised to avoid this error in the future. Notified the NRR PM (Hughes via e-mail) and NRR EO (Lee). R4DO (Miller) was notified for information. |
| Where | |
|---|---|
| Reed College Portland, Oregon (NRC Region 4) | |
| License number: | R-112 |
| Reporting | |
| Non | |
| Time - Person (Reporting Time:+-3.73 h-0.155 days <br />-0.0222 weeks <br />-0.00511 months <br />) | |
| Opened: | Stephen Frantz 20:18 Feb 8, 2009 |
| NRC Officer: | Vince Klco |
| Last Updated: | Feb 11, 2009 |
| 44840 - NRC Website
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Reed College with Non | |
WEEKMONTHYEARENS 537712018-12-01T08:00:0001 December 2018 08:00:00
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