05000387/FIN-2012004-04
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | On September 27, 2011, PPL declared the 10-meter wind direction instrument on the primary meteorological tower inoperable when indications showed, as confirmed by the vendor; the wind direction data was inconsistent with known weather responses. EP-TP-007, Equipment Important for Emergency Plan Implementation, states compensatory measures for an out of service Meteorological Tower include notifying the control room of potential Emergency Notification System (ENS) notifications, ensuring the availability of the backup and/or Nescopeck towers, using onsite observations by personnel and obtaining external meteorological information. The control room verified and notified the Nuclear Emergency Response Organization (NERO) Duty Planner that the compensatory measures identified in EP-TP-007 were available. However, the NERO was not notified of the meteorological tower 10-meter wind direction indication being inoperable. In addition, the wind direction indication on the plant computer system continued to display a yellow status color indicating valid data was available for use. Because the NERO was unaware the 10-meter wind direction indication on the primary meteorological tower was erroneous, the inaccurate meteorological information on the plant computer system could have been used by the NERO to make emergency classifications, perform dose projections, and make protective action recommendations (PAR). Although the data from the backup meteorological tower would have been available there were no stimuli that would have caused the NERO to use that data instead. PPLs RCA determined the cause of not notifying the NERO was due to the lack of specific procedural guidance defining the conditions for which the duty NERO personnel should be notified when equipment important to EP was out of service or inoperable. This issue was determined to be a violation of 10 CFR 50.54(q)(2), which requires licensees follow and maintain the effectiveness of an emergency plan that meets the planning standards in 50.47(b). 10 CFR 50.47(b)(9) requires the use of adequate methods, systems, and equipment for assessing and monitoring actual or potential offsite consequences of a radiological emergency condition. Contrary to the above, from September 27 through September 30, 2011, PPL did not maintain an adequate method for accurately calculating dose projections and issuing PARS to offsite agencies. In accordance with IMC 0609, Appendix B, Attachment 2, and the examples contained in Table 5.9-1, the inspectors determined the finding was Green since the meteorological tower was not functional for longer than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from the time of discovery without adequate compensatory measures. The finding was not greater than Green since the capability for immediate dose projection existed via alternate meteorological towers. The issue was entered in PPLs CAP as CR 1541932. |
| Site: | Susquehanna  |
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| Report | IR 05000387/2012004 Section 4OA7 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | F Arner J Caruso J Greives P Finney P Kaufman P Krohn R Edwards R Rolph S Hammann S Ibarrola |
| INPO aspect | |
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Finding - Susquehanna - IR 05000387/2012004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Susquehanna) @ 2012Q3
Self-Identified List (Susquehanna)
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