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Title: Segmentation and removal of the Carolinas-Virginia tube reactor (CVTR) moderator tank

Abstract

Special tooling was designed and deployed to segment the Moderator Tank (MT) at the CVTR Parr site near Jenkinsville, South Carolina. The MT, or reactor vessel, had to be segmented into sections to fit within three hardware liners and three custom built boxes. The MT was the most activated component remaining on site and included over 1,000 Ci of activation products This work was completed in approximately 12 months from tool conception to final packaging with no spread of contamination and no generation of secondary wastes, minimizing personnel radiological exposure. In conclusion: formal concept and final engineering design began in January 2006. Each tool was subjected to integrated mock-up testing on a full scale model of the MT prior to delivery to the project site. The first equipment was delivered to the project site in May 2006 The MT segmentation activities concluded in December 2006 with no spread of contamination, no generation of secondary wastes and total accumulated exposure of 13.9 person rem The mechanical methods used to segment the MT introduced no secondary waste and created no contaminated aerosols. The segmentation debris or chips created were collected using a high powered HEPA vacuum system. These chips were collected inmore » flexible bags and loaded into voids in the hardware liners. The cold cutting and milling processes created no contaminated aerosols allowing the CVNPA to immediately begin the final demolition phase of the decommissioning plan without delay of additional reactor building decontamination.« less

Authors:
 [1]
  1. MOTA Corporation: 3410 Sunset Boulevard, West Columbia, SC, 29169 (United States)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, Illinois 60526 (United States)
OSTI Identifier:
21144161
Resource Type:
Conference
Resource Relation:
Conference: DD and R 2007: ANS Topical Meeting on Decommissioning, Decontamination, and Reutilization 2007, Chattanooga, TN (United States), 16-19 Sep 2007; Other Information: Country of input: France; Related Information: In: Proceedings of the 2007 ANS Topical Meeting on Decommissioning, Decontamination, and Reutilization - DD and R 2007, 336 pages.
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 42 ENGINEERING; AEROSOLS; CVTR REACTOR; DECOMMISSIONING; DECONTAMINATION; DEMOLITION; MODERATORS; RADIOACTIVE WASTES; REACTOR VESSELS; SOUTH CAROLINA; TANKS; TOOLS; VACUUM SYSTEMS

Citation Formats

Anderson, Michael G. Segmentation and removal of the Carolinas-Virginia tube reactor (CVTR) moderator tank. United States: N. p., 2008. Web.
Anderson, Michael G. Segmentation and removal of the Carolinas-Virginia tube reactor (CVTR) moderator tank. United States.
Anderson, Michael G. 2008. "Segmentation and removal of the Carolinas-Virginia tube reactor (CVTR) moderator tank". United States.
@article{osti_21144161,
title = {Segmentation and removal of the Carolinas-Virginia tube reactor (CVTR) moderator tank},
author = {Anderson, Michael G},
abstractNote = {Special tooling was designed and deployed to segment the Moderator Tank (MT) at the CVTR Parr site near Jenkinsville, South Carolina. The MT, or reactor vessel, had to be segmented into sections to fit within three hardware liners and three custom built boxes. The MT was the most activated component remaining on site and included over 1,000 Ci of activation products This work was completed in approximately 12 months from tool conception to final packaging with no spread of contamination and no generation of secondary wastes, minimizing personnel radiological exposure. In conclusion: formal concept and final engineering design began in January 2006. Each tool was subjected to integrated mock-up testing on a full scale model of the MT prior to delivery to the project site. The first equipment was delivered to the project site in May 2006 The MT segmentation activities concluded in December 2006 with no spread of contamination, no generation of secondary wastes and total accumulated exposure of 13.9 person rem The mechanical methods used to segment the MT introduced no secondary waste and created no contaminated aerosols. The segmentation debris or chips created were collected using a high powered HEPA vacuum system. These chips were collected in flexible bags and loaded into voids in the hardware liners. The cold cutting and milling processes created no contaminated aerosols allowing the CVNPA to immediately begin the final demolition phase of the decommissioning plan without delay of additional reactor building decontamination.},
doi = {},
url = {https://www.osti.gov/biblio/21144161}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {1}
}

Conference:
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