05000400/FIN-2017002-01
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Finding | |
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| Title | Evaluate Fire Protection Discrepancies in RHR/CS Pump Rooms |
| Description | An unresolved item (URI) was identified by the inspectors during the walkdown of the A and B RHR and CS pump rooms, involving the use of unapproved non-fire retardant plastic sheeting to contain contamination on the A RHR piping. Additionally, the inspectors identified that the fire pre-plan for fire brigade response delineates a hose station that did not contain adequate fire hose length.Description: The inspectors identified two issues of concern during the fire protection walkdown of the A and B RHR and CS pump rooms as follows: 1) Use of Unapproved Plastic for Contamination Control: The inspectors noted that an approximately 30 foot section of the A RHR pump suction piping had been wrapped with multiple layers of plastic sheeting materials that included radiation protection yellow Caution Radioactive Materials stamped plastic sheeting overlaid with clear stretch wrap plastic. The section of RHR piping where this plastic was installedincluded the motor-operated RHR suction valves from the containment recirculation sump (valve 1SI-310) and the refueling water storage tank supply (valve 1SI-322). The inspectors were concerned that these valves could be adversely impacted from a potential fire involving this plastic material. The inspectors questioned whether this plastic was fire retardant material or had been evaluated and allowed under the licensees transient combustible control procedure. The licensee subsequently determined that none of the plastic material was fire retardant or met the requirements of National Fire Protection Association (NFPA) 701, Standard Methods of Fire Tests for Flame Propagation of Textiles and Films, and no previous transient combustible evaluation could be found that allowed the use of the non-fire retardant plastic in the RHR pump room. In addition, radiation protection personnel indicated that there could be other areas where this plastic was used since it was a typical practice to use the material to prevent the spread of contamination from leaking piping connections, valves, and valve packing. The licensee subsequently removed the plastic from the A RHR piping and initiated NCR 02132781 to evaluate this issue of concern. 2) Inadequate Fire Hose Length in Hose Station Described in Fire Pre-Plan: During review of the fire pre-plan procedure (FPP-012-02-RAB190-216) for the A and B RHR/CS pump rooms on the RAB 190 elevation, the inspectors noted that the procedure described two fire hose stations intended to be used during fire brigade response for a fire in either of the pump rooms. These two hose stations were the respective hose stations located just inside the access door to each of the two RHR/CS pump rooms. The procedure states that an extra 100 feet of hose would be needed to account for the additional distance for the hose from the opposite train pump room. However, the inspectors identified that even with the extra 100 feet added to the existing 100 feet that is already in each hose station, there would still not be adequate length for this second hose to reach the opposite train pump room with the fire. The inspectors measured the actual distance between the two locations and estimated the hose would have to be over 300 feet in length in order to be effective in fighting a fire in either of the rooms. A separate hose station on the 216 RAB elevation may provide adequate backup coverage. However, the inspectors were concerned that the issue with the fire pre-plan hose station use could cause confusion or pose an unnecessary delay in fire brigade response for a fire in either of the rooms. The licensee subsequently initiated NCR 02134163 to evaluate this issue of concern.Pending completion of additional evaluations needed to determine whether the above issues of concern represented performance deficiencies and if so, whether the performance deficiencies were of more than minor significance, this issue is identified as URI 05000400/2017002-01, Evaluate Fire Protection Discrepancies in RHR/CS Pump Rooms. |
| Site: | Harris  |
|---|---|
| Report | IR 05000400/2017002 Section 1R05 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | J Zeiler D Retterer A Patz J Dodson P Niebaum |
| INPO aspect | |
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Finding - Harris - IR 05000400/2017002 | ||||||||||||||||||||||||||
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Finding List (Harris) @ 2017Q2
Self-Identified List (Harris)
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