Event Notification Report for June 21, 2017

AGREEMENT STATE REPORT - LEAKING SEALED SOURCE

The following information was received from the Commonwealth of Massachusetts via email:

"The licensee reported on June 23, 2017 that licensee learned from its licensed leak test service provider on June 21, 2017 that one 6 millicurie, cobalt-57 sealed source out of 25 sources received in a package on June 16, 2017 from the source manufacturer, Eckert & Ziegler Isotope Products, tested positive for leakage. The leakage was reported as being 4.2 times the limit of 0.005 microCuries (0.021 microCuries). The other 24 sources showed no contamination.

"The leaking sealed source is an Eckert & Ziegler Isotope Products Model 3901-2 source, serial number P6-883.

"The licensee reported that the leaking source was contained and secured in an individual zip lock type plastic bag; that there is no facility contamination based on area surveys performed; that the external surfaces of the package received, that had contained all of the 25 source, had been wipe tested and that the package was not contaminated; and that the sources were not used pending leak test results.

"The licensee reported that it notified the source manufacturer on June 21, 2017, received a return authorization number from the manufacturer, and shipped the source back to the manufacturer on June 22, 2017.

"The Agency [Massachusetts Radiation Control Program] considers this event to be open."

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).