05000254/FIN-2007003-02
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Finding | |
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| Title | Implementation of External Flooding Methodology |
| Description | Updated Final Safety Analysis Report Section 3.4.1.1, External Flood Protection Measures, provided the licensees external flooding methodology. The methodology was developed based upon the Quad Cities structural design criteria which assumed a flood water level elevation of 590 feet or less. If the flood water elevation exceeded 594.5 feet, the licensee planned to open all outside doors and flood all plant buildings to a level which matched the current river level. Prior to flooding the buildings, the licensee planned to shut down both units, remove the drywell and reactor vessel heads, fill both refueling cavities, remove the cavity gates, rack out all breakers below the 608 foot elevation, and set up portable pumping equipment to maintain water levels in the spent fuel pools/reactor cavities. The UFSAR stated that the portable pump was required to supply 200 gallons per minute to ensure that adequate makeup water was available to supplement the water lost due to evaporative cooling. On April 23, 2007, the inspectors reviewed QCOA 0010-06, Flood Emergency Procedure, Revision 10. The inspectors noted that the procedure failed to provide the exact location of the portable pump. Due to the lack of information regarding the pumps location, the inspectors requested that operations personnel locate the pump. Operations personnel were initially unable to locate the pump. However, the pump was found within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The licensee initiated Issue Report 621596 to ensure that QCOA 0010-06 was updated to include the pumps location. On May 3, 2007, the licensee identified that the pumps detachable fuel tank was missing and unable to be located. Eighteen days later the licensee provided an interim fuel tank to be used with the pump. The licensee initiated Issue Report 625112 to document this issue and planned to obtain a permanent fuel tank. During a re-review of QCOA 0010-16 on June 1, the inspectors noted that Step D.5.b stated that operations personnel should obtain two 10 foot sections of 4 inch suction hose for use with the portable pump. Since the pump will be located on a landing approximately 8 feet above the floor, and the flood waters will be allowed to flow into the reactor building until the flood waters equalize with Mississippi River level, the inspectors questioned whether the two sections of hose would be adequate to reach from the pumps location to the actual flood water elevation. The licensee initiated Issue Report 638004 to document this issue. In late April the inspectors questioned operations, maintenance, and engineering personnel to determine whether the licensee periodically tested the portable pump to ensure that the pump could provide the 200 gallons per minute required by the UFSAR. The inspectors also reviewed the vendor manual and found that the pump could not be operated at a pre-determined speed. Instead, the pump speed control was a sliding lever which could be positioned anywhere between the words slow and fast. At the conclusion of the inspection period, the licensee had not found any documentation which proved that the pump could provide adequate flow during a flooding event. However, the licensee was considering testing the pump in the near future. Issue Reports 624645 and 638004 were initiated to document the pump testing and capacity issues. Due to the lack of information, the licensee was unable to clearly demonstrate their ability to implement their external flooding methodology. As a result, the inspectors considered the items associated with implementing the external flooding methodology to be unresolved pending the review of the licensees actions associated with the issue reports generated during this inspection (URI 05000254/2007003-02; 05000265/2007003-02). |
| Site: | Quad Cities  |
|---|---|
| Report | IR 05000254/2007003 Section 1R06 |
| Date counted | Jun 30, 2007 (2007Q2) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | C Zoia R Jickling R Orlikowski T Bilik W Slawinski B Palagi K Stoedter M Ring S Bakhsh A Barker J Mcghee A Koonce R Jones G Kolcum D Melendez-Colon R Baker M Kurth R Ganser J Bozgaa Barkera Koonce D Melendez Colon J Bozga K Stoedter M Kurth M Ring R Baker R Ganser T Bilik W Slawinski |
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Finding - Quad Cities - IR 05000254/2007003 | |||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2007Q2
Self-Identified List (Quad Cities)
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