| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
08/02/2017 - 08/03/2017 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 52817 | Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: ROBERT DANIELS
HQ OPS Officer: DONALD NORWOOD | Notification Date: 06/21/2017
Notification Time: 16:25 [ET]
Event Date: 06/21/2017
Event Time: 10:00 [CDT]
Last Update Date: 08/02/2017 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
VINCENT GADDY (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | | 2 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text POSTULATED FIRE EVENT COULD ADVERSELY IMPACT SAFE SHUTDOWN EQUIPMENT
"During the review of an electrical circuit coordination calculation to support an ongoing revision of the Fire Safe Shutdown Analysis (FSSA), a lack of appropriate circuit protection coordination was identified in the coordination of electrical protective devices on 118 VAC electrical panels operating in bypass mode of operation.
"One or more of these electrical panels could be lost for various 10 CFR Appendix R III.G.2 fires outside the Control Room at CPNPP [Comanche Peak Nuclear Power Plant] due to circuit coordination issues. This could adversely affect safe shutdown equipment and potentially cause the loss of the ability to conduct a safe shutdown as required by 10 CFR 50 Appendix R.
"Immediate compensatory actions are being taken to establish (or confirm already existing) fire watches in the Fire Areas containing the associate circuits which can potentially jeopardize the FSSA.
"This condition is reportable in accordance with 10 CFR 50.72(b)(3)(ii)(B) as an unanalyzed condition.
"The NRC Resident Inspector has been notified."
* * * RETRACTION ON 8/2/17 AT 1638 EDT FROM BRIAN MITCHELL TO BETHANY CECERE * * *
"On 06/21/2017 Comanche Peak reported an ENS Report (no. 52817) related to the potential loss of 118 VAC electrical panels operating in bypass mode of operation for various 10 CFR [50] Appendix R III.G.2 fires outside the Control Room due to circuit coordination issues. This could adversely affect safe shutdown equipment and potentially cause the loss of the ability to conduct a safe shutdown as required by 10 CFR 50 Appendix R.
"Subsequent analysis by Engineering has determined that the affected panels remain coordinated for fire generated faults and can be credited as available by the Fire Safe Shutdown Analysis for a fire outside of the Control Room.
"Based on the above, the condition described in the ENS report no. 52817 is not considered to be an unanalyzed condition as described in 10 CFR 50.72(b)(3)(ii)(B)."
The licensee notified the NRC Resident Inspector.
Notified R4DO (Azua). |
| Agreement State | Event Number: 52822 | Rep Org: NC DIV OF RADIATION PROTECTION
Licensee: HOSPIRA, INC
Region: 1
City: ROCKY MOUNT State: NC
County:
License #: 064-0969-1
Agreement: Y
Docket:
NRC Notified By: TRAVIS CARTOSKI
HQ OPS Officer: VINCE KLCO | Notification Date: 06/23/2017
Notification Time: 11:37 [ET]
Event Date: 06/22/2017
Event Time: 11:30 [EDT]
Last Update Date: 08/02/2017 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
FRANK ARNER (R1DO)
NMSS_EVENTS_NOTIFICA (EMAI)
| Event Text AGREEMENT STATE REPORT - IRRADIATOR EQUIPMENT MALFUNCTION
The following information was received from the State of North Carolina via email:
"On June 22, 2017 at [1130 EDT], North Carolina Radiation Protection Section (RPS) was informed by the Radiation Safety Officer for Hospira, Inc. (Pfizer), Rocky Mount, NC (License 064-0969-1) that they were experiencing an issue involving their Wet Shielded Irradiator (Nordion Model JS-8900, Serial Number IR-183, approved for 4,800,000.00 Ci of Co-60). RSO stated that during routine maintenance checks the Source 1 Rack of the irradiator would not trip the down switch to confirm the source rack was in the down position on the control panel and that they were following emergency procedures. Nordion was then contacted by the licensee to obtain assistance. RPS inspectors were immediately dispatched to the licensee's site.
"Once on site, RSO informed RPS that visual confirmation was made of source position via hydraulic cylinders that were fully extended, comparison of cable tightness on roof was observed, and that no indication of radiation in the vault was detected; all leading to the unconfirmed indication that the source rack had moved to the down position. With the assistance from Nordion, Hospira staff were able to initiate bypass procedures and gain access to the vault where confirmation was made that the source racks were in the down position.
"Nordion advised that a faulty down position switch was the cause for the failure. Switch was repaired on site by Hospira engineers, same day. Following repair, Hospira personnel cycled the sources which were brought up into position for one sterilization cycle and then the sources were brought down to test the position sensor. The test was successful, as indicated by the down position indicator lamps and screen on the operator's panel. Nordion staff was informed of the successful test and Hospira staff continued procedural tests to confirm full functionality. After confirming cycling up and down of the source racks, Hospira personnel performed full monthly QA check before resuming operations. 30-Day report is pending to RPS."
* * * UPDATE ON 8/2/2017 AT 1042 EDT FROM TRAVIS CARTOSKI TO DONG PARK * * *
The following information was received from the State of North Carolina via email:
"We have completed our investigation and have no further information to provide in this event report. We would like to request [NMED] Event 170315 be Closed & Complete."
Notified R1DO (Lilliendahl) and NMSS Events Notification via email. | |