Event Notification Report for May 11, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/10/2021 - 05/11/2021
Agreement State
Event Number: 55249
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: Dees and Associates, Inc.
Region: 4
City: Santa Cruz State: CA
County:
License #: 7538-44
Agreement: Y
Docket:
NRC Notified By: Kamani Hewadikaram
HQ OPS Officer: Jeffrey Whited
Licensee: Dees and Associates, Inc.
Region: 4
City: Santa Cruz State: CA
County:
License #: 7538-44
Agreement: Y
Docket:
NRC Notified By: Kamani Hewadikaram
HQ OPS Officer: Jeffrey Whited
Notification Date: 05/11/2021
Notification Time: 18:33 [ET]
Event Date: 05/11/2021
Event Time: 00:00 [PDT]
Last Update Date: 05/11/2021
Notification Time: 18:33 [ET]
Event Date: 05/11/2021
Event Time: 00:00 [PDT]
Last Update Date: 05/11/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
GADDY, VINCENT (R4DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
GADDY, VINCENT (R4DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
EN Revision Imported Date: 6/11/2021
EN Revision Text: AGREEMENT STATE REPORT - DISCOVERED DENSITY GAUGE
The following was received from the California Radiation Control Program via email:
"On 05/11/21 the California Office of Emergency Services (Cal OES) contacted [the Radiologic Health Branch] RHB to report a moisture density gauge that was discovered by [the California Highway Patrol] CHP in Santa Cruz, CA. The message stated that while CHP and [California Department of Transportation] CALTRANS were removing a transient encampment, a Soil Density Gauge (Troxler Model 3430, S/N #38287, containing 9 mCi of Cs-137 and 44 mCi of Am-241) was discovered at the site and the device does not appear to be damaged.
"CHP contacted the gauge vendor, Troxler, and was able to locate the licensee (Dees and Associates, Inc) and inform them of the stolen gauge. CHP took possession of the gauge and [the Radiation Safety Officer] RSO had already picked up the gauge from the CHP facility. According to the RSO, they have noticed a gauge stolen from their storage on 4/15/21. She had immediately notified Santa Cruz Police Department (Case # 21S-02156) and Troxler of the theft at the time of the incident. RHB was unaware of the theft until the Cal OES notification on 5/11/21."
California 5010 Number: 051121
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
EN Revision Text: AGREEMENT STATE REPORT - DISCOVERED DENSITY GAUGE
The following was received from the California Radiation Control Program via email:
"On 05/11/21 the California Office of Emergency Services (Cal OES) contacted [the Radiologic Health Branch] RHB to report a moisture density gauge that was discovered by [the California Highway Patrol] CHP in Santa Cruz, CA. The message stated that while CHP and [California Department of Transportation] CALTRANS were removing a transient encampment, a Soil Density Gauge (Troxler Model 3430, S/N #38287, containing 9 mCi of Cs-137 and 44 mCi of Am-241) was discovered at the site and the device does not appear to be damaged.
"CHP contacted the gauge vendor, Troxler, and was able to locate the licensee (Dees and Associates, Inc) and inform them of the stolen gauge. CHP took possession of the gauge and [the Radiation Safety Officer] RSO had already picked up the gauge from the CHP facility. According to the RSO, they have noticed a gauge stolen from their storage on 4/15/21. She had immediately notified Santa Cruz Police Department (Case # 21S-02156) and Troxler of the theft at the time of the incident. RHB was unaware of the theft until the Cal OES notification on 5/11/21."
California 5010 Number: 051121
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
Agreement State
Event Number: 55251
Rep Org: ILLINOIS EMERGENCY MGMT. AGENCY
Licensee: Illinois Emergency Management Agency
Region: 3
City: Springfield State: IL
County:
License #: IL-01030-01
Agreement: Y
Docket:
NRC Notified By: Gary Forsee
HQ OPS Officer: Kerby Scales
Licensee: Illinois Emergency Management Agency
Region: 3
City: Springfield State: IL
County:
License #: IL-01030-01
Agreement: Y
Docket:
NRC Notified By: Gary Forsee
HQ OPS Officer: Kerby Scales
Notification Date: 05/12/2021
Notification Time: 13:01 [ET]
Event Date: 05/11/2021
Event Time: 00:00 [CDT]
Last Update Date: 05/12/2021
Notification Time: 13:01 [ET]
Event Date: 05/11/2021
Event Time: 00:00 [CDT]
Last Update Date: 05/12/2021
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
McCRAW, AARON (R3DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
McCRAW, AARON (R3DO)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
EN Revision Imported Date: 6/11/2021
EN Revision Text: AGREEMENT STATE REPORT - EQUIPMENT FAILED IN SHIELDED POSITION
The following report was received from the Illinois Emergency Management Agency (the Agency) via email:
"On May 12, 2021, the [Division of Nuclear Safety - Radioactive Material] DNS-RAM section was verbally notified that a reportable equipment failure had occurred on the Agency's JL Shepherd Model 81-12T irradiator the previous day. The equipment failed in the shielded position and no public/staff exposures were reported as a result of the failure. The unit has been taken out of service pending repair by the manufacturer. All security systems required under 32 [Illinois Admin] Code 337 remain unaffected.
"This equipment and associated calibration activities are operated under a self-issued materials license, IL-01030-01. Additional details on the equipment failure are forthcoming. Initial notification was made within the 24 hour reporting requirement. A written report containing the information in 32 [Illinois Admin] Code 340.1230 is required within 30 days. This report will be updated as information becomes available."
Illinois Item Number: IL210016
EN Revision Text: AGREEMENT STATE REPORT - EQUIPMENT FAILED IN SHIELDED POSITION
The following report was received from the Illinois Emergency Management Agency (the Agency) via email:
"On May 12, 2021, the [Division of Nuclear Safety - Radioactive Material] DNS-RAM section was verbally notified that a reportable equipment failure had occurred on the Agency's JL Shepherd Model 81-12T irradiator the previous day. The equipment failed in the shielded position and no public/staff exposures were reported as a result of the failure. The unit has been taken out of service pending repair by the manufacturer. All security systems required under 32 [Illinois Admin] Code 337 remain unaffected.
"This equipment and associated calibration activities are operated under a self-issued materials license, IL-01030-01. Additional details on the equipment failure are forthcoming. Initial notification was made within the 24 hour reporting requirement. A written report containing the information in 32 [Illinois Admin] Code 340.1230 is required within 30 days. This report will be updated as information becomes available."
Illinois Item Number: IL210016
Part 21
Event Number: 55347
Rep Org: ENGINE SYSTEMS, INC
Licensee: ENGINE SYSTEMS, INC
Region: 1
City: Rocky Mt. State: NC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Dan Roberts
HQ OPS Officer: Brian P. Smith
Licensee: ENGINE SYSTEMS, INC
Region: 1
City: Rocky Mt. State: NC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Dan Roberts
HQ OPS Officer: Brian P. Smith
Notification Date: 07/09/2021
Notification Time: 15:23 [ET]
Event Date: 05/11/2021
Event Time: 12:00 [EDT]
Last Update Date: 07/09/2021
Notification Time: 15:23 [ET]
Event Date: 05/11/2021
Event Time: 12:00 [EDT]
Last Update Date: 07/09/2021
Emergency Class: Non Emergency
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
Person (Organization):
MILLER, MARK (R2DO)
PART 21/50.55 REACTORS, - (EMAIL)
MILLER, MARK (R2DO)
PART 21/50.55 REACTORS, - (EMAIL)
EN Revision Imported Date: 8/9/2021
EN Revision Text: PART 21 INITIAL REPORT - DEVIATION IDENTIFIED LOOSE ZINC ANODES INSTALLED IN HEAT EXCHANGERS FOR DIESEL GENERATORS
The following is a summary of the defect described in an initial report received from the vendor via facsimile:
The vendor notified the NRC of a defect involving two instances of loose or dislodged zinc anodes (P/N 1335BEM2P) supplied by the vendor. The anodes are installed in the cooling water enter and exit and return channels of the jacket water heat exchanger of the emergency diesel generator. Each heat exchanger contains eight zinc anode assemblies that consist of a zinc rod threaded into a steel pipe plug. The zinc acts as a sacrificial anode to protect the pressure boundary metals from degradation due to galvanic corrosion. In the case of a loose or dislodged zinc anode, the zinc rod may become foreign material that remains trapped in the vessel, potentially impacting and damaging the tube ends where they project from the tube sheet. Alternatively, an anode located in the exit channel may by carried away from the heat exchanger and potentially damage downstream components.
The corrective action being recommended are as follows:
"It is recommended to perform an inspection to verify tightness at the zinc rod to pipe plug interface. The rod should be threaded into the pipe plug snug tight and, if required, may be tightened to a maximum of 15 ft-lbs. If desired, the zinc rod may be removed and eliminated from the assembly leaving only the steel pipe plug. Inclusion of the zinc anode is not required for the EDG heat exchanger application at TVA-Browns Ferry."
This component was supplied to the Browns Ferry Nuclear Power Plant.
Point of contact: Dan Roberts
Quality Manager
Engine Systems Inc.
175 Freight Rd.
Rocky Mount, NC 27804
(252) 977-2720
EN Revision Text: PART 21 INITIAL REPORT - DEVIATION IDENTIFIED LOOSE ZINC ANODES INSTALLED IN HEAT EXCHANGERS FOR DIESEL GENERATORS
The following is a summary of the defect described in an initial report received from the vendor via facsimile:
The vendor notified the NRC of a defect involving two instances of loose or dislodged zinc anodes (P/N 1335BEM2P) supplied by the vendor. The anodes are installed in the cooling water enter and exit and return channels of the jacket water heat exchanger of the emergency diesel generator. Each heat exchanger contains eight zinc anode assemblies that consist of a zinc rod threaded into a steel pipe plug. The zinc acts as a sacrificial anode to protect the pressure boundary metals from degradation due to galvanic corrosion. In the case of a loose or dislodged zinc anode, the zinc rod may become foreign material that remains trapped in the vessel, potentially impacting and damaging the tube ends where they project from the tube sheet. Alternatively, an anode located in the exit channel may by carried away from the heat exchanger and potentially damage downstream components.
The corrective action being recommended are as follows:
"It is recommended to perform an inspection to verify tightness at the zinc rod to pipe plug interface. The rod should be threaded into the pipe plug snug tight and, if required, may be tightened to a maximum of 15 ft-lbs. If desired, the zinc rod may be removed and eliminated from the assembly leaving only the steel pipe plug. Inclusion of the zinc anode is not required for the EDG heat exchanger application at TVA-Browns Ferry."
This component was supplied to the Browns Ferry Nuclear Power Plant.
Point of contact: Dan Roberts
Quality Manager
Engine Systems Inc.
175 Freight Rd.
Rocky Mount, NC 27804
(252) 977-2720