Event Notification Report for May 15, 2026
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Event Text
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/14/2026 - 05/15/2026
EVENT NUMBERS
58270
58270
Non-Agreement State
Event Number: 58270
Rep Org: Alt and Witzig Engineering
Licensee: Alt and Witzig Engineering
Region: 3
City: Merriville State: IN
County:
License #: 13-18685-02
Agreement: N
Docket:
NRC Notified By: Tobin Moore
HQ OPS Officer: Jordan Wingate
Licensee: Alt and Witzig Engineering
Region: 3
City: Merriville State: IN
County:
License #: 13-18685-02
Agreement: N
Docket:
NRC Notified By: Tobin Moore
HQ OPS Officer: Jordan Wingate
Notification Date: 05/08/2026
Notification Time: 09:55 [ET]
Event Date: 05/07/2026
Event Time: 14:00 [EDT]
Last Update Date: 05/08/2026
Notification Time: 09:55 [ET]
Event Date: 05/07/2026
Event Time: 14:00 [EDT]
Last Update Date: 05/08/2026
Emergency Class: Non Emergency
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
Person (Organization):
Stoedter, Karla (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
Stoedter, Karla (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
MISSING GAUGE
The following information was provided by the licensee via phone:
During a routine audit, it was discovered that a CPN moisture density gauge was missing. The licensee contacted their alternate storage sites and work sites and performed searches for the missing gauge. The gauge was then declared missing. Searches have been suspended pending further direction from the Radiation Safety Officer.
Gauge information:
Model: MC1-DPR
Serial number: 10400193
Sources: 10 mCi Cs-137, 50 mCi Am-241/Be
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
The following information was provided by the licensee via phone:
During a routine audit, it was discovered that a CPN moisture density gauge was missing. The licensee contacted their alternate storage sites and work sites and performed searches for the missing gauge. The gauge was then declared missing. Searches have been suspended pending further direction from the Radiation Safety Officer.
Gauge information:
Model: MC1-DPR
Serial number: 10400193
Sources: 10 mCi Cs-137, 50 mCi Am-241/Be
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
Page Last Reviewed/Updated May 15, 2026, 04:50 am EDT