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Title: L-Area STS MTR/NRU/NRX Grapple Assembly Closure Mechanics Review

A review of the closure mechanics associated with the Shielded Transfer System (STS) MTR/NRU/NRX grapple assembly utilized at the Savannah River Site (SRS) was performed. This review was prompted by an operational event which occurred at the Canadian Nuclear Laboratories (CNL) utilizing a DTS-XL grapple assembly which is essentially identical to the STS MTR/NRU/NRX grapple assembly used at the SRS. The CNL operational event occurred when a NRU/NRX fuel basket containing spent nuclear fuel assemblies was inadvertently released by the DTS-XL grapple assembly during a transfer. The SM review of the STS MTR/NRU/NRX grapple assembly will examine the operational aspects of the STS and the engineered features of the STS which prevent such an event at the SRS. The design requirements for the STS NRU/NRX modifications and the overall layout of the STS are provided in other documents.
Authors:
 [1]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River Nuclear Solutions (SRNS)
Publication Date:
OSTI Identifier:
1305139
Report Number(s):
SRNS--E3520-2016-00006-SM
TRN: US1601800
DOE Contract Number:
AC09-08SR22470
Resource Type:
Technical Report
Research Org:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River Nuclear Solutions (SRNS)
Sponsoring Org:
USDOE Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MATERIALS HANDLING; SPENT FUELS; SAVANNAH RIVER PLANT; CLOSURES; MECHANICS; ENGINEERED SAFETY SYSTEMS