HERMES Shield Door Event Causal Analysis

Technical Report · Thu Jul 07 04:00:00 EDT 2016

DOI:https://doi.org/10.2172/1562660· OSTI ID:1562660

Nelson, John Seth ^[1]

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1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Description Of Event: On June, 28, 2016, the HERMES III accelerator (TA-IV, Building 970) operations team began preparing for the third test shot of the day. Prior to the shot, operations personnel conducted the required pre-shot clearance and lock-up process. Following the shot, an operator and RCT re-entered the controlled area to perform post-shot clearance activities and found the shield door in the open position. All other control measures (interlocks and other access controls) were in place during this event and there was no personnel exposure. The test cell shield door is a six-inch thick steel door; it's principal function is to privide shielding, however, it also serves as a pedestrian entrance into the test cell. The shield door is located on the north side of the test cell and, aside from distance, is a primary control to mitigate personnel exposure to ionizing radiation.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1562660
• Report Number(s): SAND--2016-9732R; 647859
• Country of Publication: United States
• Language: English

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