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On the morning of August 13, 2014 while cl … On the morning of August 13, 2014 while cleaning up from a fire event on coal handling conveyer belt #2 at the Ameren Missouri (Ameren) Rush Island Energy Center it was observed that the nucleonic gauge located outside of the area of the original fire had some indications of potential damage. The gauge is located approximately 12 feet above the walkway near the ceiling of the room in an area that was not easily accessible. The gauge is a Ronan Engineering Model SA1-C10 containing 100 mCi of CS-137 in sealed solid form. Ameren contacted R. M. Wester (NRC Licensed maintenance vendor) to evaluate the nucleonic gauge on August 13, 2014 to determine if the gauge had been damaged due to the fire. </br>R. M. Wester examination of the source housing showed the exterior to be in good condition with some minor scorching. The shutter check performed showed smooth operation and good beam strength with the shutter open (greater than 200 mR/hr) and good shielding with the shutter closed (1.5 mR/hr). Wipes of the source and the area below the source indicated no contamination or leakage from the source. </br>An area radiation survey did indicate that some of the lead inside of the source housing had potentially melted and shifted. The on contact readings of the back (0.2 mR/hr), sides/bottom (0.3 mR/hr), and shutter (1.5 mR/hr) were all consistent with expected readings. The 30 cm readings from the source back, sides, and bottom were also as expected (approximately 0.03 mR/hr). The readings on top of the source were higher than expected with a reading of 6 mR/hr on contact and 0.4 mR/hr at 30 cm. These readings on the top of the source do not present an immediate radiological hazard due to their low intensity and the fact that the source is mounted very close to the ceiling in the room. The ceiling support beam and water deflection shield make it difficult to even get a reading 30 cm from the top of the source.</br>R. M. Wester's recommendation was that the gauge is functional and it could continue to be use until a replacement device could be procured and installed.nt device could be procured and installed.
15:30:00, 13 August 2014 +
50,365 +
09:40:00, 14 August 2014 +
15:30:00, 13 August 2014 +
On the morning of August 13, 2014 while cl … On the morning of August 13, 2014 while cleaning up from a fire event on coal handling conveyer belt #2 at the Ameren Missouri (Ameren) Rush Island Energy Center it was observed that the nucleonic gauge located outside of the area of the original fire had some indications of potential damage. The gauge is located approximately 12 feet above the walkway near the ceiling of the room in an area that was not easily accessible. The gauge is a Ronan Engineering Model SA1-C10 containing 100 mCi of CS-137 in sealed solid form. Ameren contacted R. M. Wester (NRC Licensed maintenance vendor) to evaluate the nucleonic gauge on August 13, 2014 to determine if the gauge had been damaged due to the fire. </br>R. M. Wester examination of the source housing showed the exterior to be in good condition with some minor scorching. The shutter check performed showed smooth operation and good beam strength with the shutter open (greater than 200 mR/hr) and good shielding with the shutter closed (1.5 mR/hr). Wipes of the source and the area below the source indicated no contamination or leakage from the source. </br>An area radiation survey did indicate that some of the lead inside of the source housing had potentially melted and shifted. The on contact readings of the back (0.2 mR/hr), sides/bottom (0.3 mR/hr), and shutter (1.5 mR/hr) were all consistent with expected readings. The 30 cm readings from the source back, sides, and bottom were also as expected (approximately 0.03 mR/hr). The readings on top of the source were higher than expected with a reading of 6 mR/hr on contact and 0.4 mR/hr at 30 cm. These readings on the top of the source do not present an immediate radiological hazard due to their low intensity and the fact that the source is mounted very close to the ceiling in the room. The ceiling support beam and water deflection shield make it difficult to even get a reading 30 cm from the top of the source.</br>R. M. Wester's recommendation was that the gauge is functional and it could continue to be use until a replacement device could be procured and installed.nt device could be procured and installed.
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00:00:00, 14 August 2014 +
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0.757 d (18.17 hours, 0.108 weeks, 0.0249 months) +
15:30:00, 13 August 2014 +
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