The following information was received via e-mail.
The licensee discovered that the shutter to a fixed nuclear density gauge was missing on 9/21/17 during routine leak tests. Prominent barriers were immediately put in place around the fenced area containing the gauge to further cordon off the area to prevent any access to the area. Three days prior to discovery, the licensee performed routine cleaning in which the shutter was observed in place at that time. The gauge is located on top of winding equipment 6.5 feet high, located inside of a fenced area. The fenced area provides an additional 4 feet from the gauge separating areas where personnel may traffic on the ground. The radiation beam for the gauge is pointing down from its location and travels about 6 inches to the target plate. By facility design, placement of the gauge includes additional barriers and fencing, access to the gauge by any person is restrictive and following interviews with the licensee, no exposures are suspected to have occurred due to the faulty shutter.
The manufacturer completed repairs to the fixed gauge on 10/6/17.
Gauge Information: NDC Amersham Model # 103, Serial # 11302.
Source Information: Am-241, 150 mCi, QSA Global, Inc. Model # AMC.P6, Serial # 5244AR.
NC Tracking Number: 170042