ENS 55010: Difference between revisions

v t e ENS Event
04:00 Nov 25, 2020
Title	Damaged Moisture Density Gauge
Event Description	The following information was received from the state of Massachusetts via email: MA RCP [Radiation Control Program] Officer received notification from the licensee Radiation Safety Officer (RSO) that one of their portable gauges was damaged by construction equipment at a temporary job site of the licensee. The portable gauge is a Troxler Electronics Laboratories Model 3400 Series moisture-density gauge containing up to 9 milliCurie of Cesium-137 in one sealed source and up to 44 milliCurie of Americium-241 in another sealed source. The RSO reported that they were in route to the site with a survey instrument and that, based on information received by his technician at the site, the damage is expected to be minor. The RSO indicated the portable gauge was in use at the time of the incident. The gauge and rod were pushed into the sand when the damage occurred. The RSO indicated his technician told him the shielding was intact, however, the source and shielding separated from the plastic portion of the gauge. He also indicated the source was able to be retracted into the gauge's shielding. Additionally, RCP dispatched personnel to the site to perform surveys and evaluation of the gauge. RCP staff evaluated NRC reporting requirements. Equipment was secured on-site. No loose contamination identified and maximum dose rate was 20 mR per hour at contact on the shielded source holder. No personnel exposure and there was no immediate threat to public health. No additional emergency response was required. RCP personnel assisted in boxing the damaged gauge and the licensee will return the gauge securely to their office and will then arrange for transport back to the manufacturer. RCP will follow up with additional information. 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

ENS 55010 +/-
Where
Mcardle Gannon Associates Tewksbury, Massachusetts (NRC Region 1)
License number:	48-0518
Organization:	Ma Radiation Control Program
Reporting

Agreement State
Time - Person (Reporting Time:+12.57 h0.524 days <br />0.0748 weeks <br />0.0172 months <br />)
Opened:	Charma Waring 16:34 Nov 25, 2020
NRC Officer:	Kerby Scales
Last Updated:	Nov 25, 2020
55010 - NRC Website
v • d • e

v t e Emergency Notification System
Mcardle Gannon Associates with Agreement State
WEEKMONTHYEAR2020-11-25T04:00:00 [Table view]
[ENS list for Mcardle Gannon Associates]

@@ Line 10: / Line 10: @@
 | utype =
 | cfr = Agreement State
-| emergency class =  Non Emergency
+| emergency class = Non Emergency
 | notification date = 11/25/2020 16:34
 | notification by = Charma Waring

ENS 55010: Difference between revisions

Latest revision as of 12:09, 15 January 2021

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ENS 55010: Difference between revisions

Latest revision as of 12:09, 15 January 2021

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