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A self-revealing Green finding and associaA self-revealing Green finding and associated NCV of 10 CFR 20.1501, Surveys and Monitoring: General, was identified when Exelon failed to perform adequate loose surface contamination surveys of the Unit 1 RWCU isolation valve room prior to authorizing work to hang shadow shielding near the HV-051-1F017A valve, and also during the conduct of the work itself. Exelon also did not identify very high levels of loose surface contamination on overhead piping and structures which surrounded the work area. This failure resulted in unplanned internal radiation exposures to three personnel, including an RPT who was assigned to monitor the radiological aspects of the work.itor the radiological aspects of the work.  +
23:59:59, 30 June 2018  +
05000352  +
23:59:59, 30 June 2018  +
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22:35:15, 10 September 2018  +
23:59:59, 30 June 2018  +
Failure to Conduct Adequate Radiation Surveys and Evaluate Potential Radiological Hazards  +