The 12th International Conference on Environmental ... - Events
The 12th International Conference on Environmental ... - Events
The 12th International Conference on Environmental ... - Events
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Abstracts Sessi<strong>on</strong> 22<br />
SESSION 22 - POSTER SESSION - FACILITY DECONTAMINATION AND DECOMMISSIONING<br />
A) BUILDING 18: OPERATING FEEDBACK FROM CLEANING AND DISMANTLING<br />
OF GLOVE BOXES AND SHIELDING LINES - 16046<br />
Michel Jeanjacques, Marie Pierre Brem<strong>on</strong>d, Laurent Gautier,Guy Viellard,<br />
Eric Pichereau, David Estivié, Commissariat l’Energie Atomique (France)<br />
This summary presents the clean-up and dismantling works <strong>on</strong> glove boxes and shielded lines in building 18. <str<strong>on</strong>g>The</str<strong>on</strong>g> Atomic Energy<br />
Commissi<strong>on</strong>’s centre at F<strong>on</strong>tenay Aux Roses (CEAFAR) was created in 1946. A radiochemical laboratory devoted to R&D programs<br />
focused <strong>on</strong> studies of irradiated fuel reprocessing processes, waste treatment processes and studies and producti<strong>on</strong> of<br />
transuranic elements was built in the early 1960s. <str<strong>on</strong>g>The</str<strong>on</strong>g> R&D program was finally halted <strong>on</strong> 30 June 1995. <str<strong>on</strong>g>The</str<strong>on</strong>g> purpose of the building<br />
18 clean-up program is to minimise the nuclear and traditi<strong>on</strong>al hazards and to reduce as much as possible the producti<strong>on</strong> of<br />
high- and medium-level waste during subsequent dismantling work. <str<strong>on</strong>g>The</str<strong>on</strong>g> paper will deal with a short descripti<strong>on</strong> of the operati<strong>on</strong>s<br />
as well as the less<strong>on</strong>s learned and the feedback experience which could be of any help in <strong>on</strong> going or planned DD&R projects<br />
B) AUTOMATED VEHICLE AND WASTE PACKAGE SURVEY SYSTEM - 16223<br />
Arthur Desrosiers, Phillip Mann, Safety and EcologyCorporati<strong>on</strong> (USA)<br />
SEC provides radiological c<strong>on</strong>trol services for the D&D of the K-25 Gaseous Diffusi<strong>on</strong> Plant in Oak Ridge TN. <str<strong>on</strong>g>The</str<strong>on</strong>g> demoliti<strong>on</strong><br />
of the structure of the building has been initiated. Building debris will be disposed in a waste management facility <strong>on</strong> the Oak<br />
Ridge Reservati<strong>on</strong>. This will require an estimated 70,000 truck shipments and each truck shipment must be inspected for radiological<br />
c<strong>on</strong>taminati<strong>on</strong>. <str<strong>on</strong>g>The</str<strong>on</strong>g> inspecti<strong>on</strong> process includes measurements with hand held survey instruments and preparati<strong>on</strong> of a clearance<br />
ticket.We developed a system for automatically generating the clearance ticket in order to reduce costs. <str<strong>on</strong>g>The</str<strong>on</strong>g> system automates<br />
data collecti<strong>on</strong> and report preparati<strong>on</strong> by using a programmable handheld data terminal (HDT) that acquires the instrument readings<br />
and prints a preformatted clearance ticket. We estimate that the number of labor hours required to perform these truck inspecti<strong>on</strong>s<br />
will be reduced by 33% compared to previous methods.<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> key to success for this project was developing a simple software interface that provides a graphic diagram of the truck and<br />
the survey points, provides step-by-step directi<strong>on</strong>s and status during the inspecti<strong>on</strong>, and enters data <strong>on</strong>to a preformatted report that<br />
can be printed directly from the HDT. Symbols differentiate the c<strong>on</strong>tact and smear measurements. <str<strong>on</strong>g>The</str<strong>on</strong>g> inspector simply positi<strong>on</strong>s<br />
the instrument probe and presses a butt<strong>on</strong> <strong>on</strong> the HDT to acquire data. <str<strong>on</strong>g>The</str<strong>on</strong>g> HDT software evaluates each measurement and instructs<br />
the inspector to c<strong>on</strong>tinue taking measurements or resp<strong>on</strong>d to elevated levels of c<strong>on</strong>taminati<strong>on</strong>. When the survey is completed, the<br />
HDT provides a clearance message <strong>on</strong> the LCD screen and the inspector may proceed to the next truck survey. At the end of the<br />
work turn, the stored results are printed for review and signature. Although the time required to complete the measurements is not<br />
reduced, the time required to prepare documentati<strong>on</strong> is drastically c<strong>on</strong>densed. Although the initial implementati<strong>on</strong> is limited to surveying<br />
large trucks, the process may be extended to any repetitive waste management survey, such as inspecti<strong>on</strong>s of shipping packages.<br />
Future versi<strong>on</strong>s of the software may also be expanded to minimize the time required for each measurement.<br />
C) TECHNICAL PERFORMANCE CHARACTERIZATION OF FOURIER TRANSFORM PROFILOMETRY FOR<br />
QUANTIATIVE WASTE VOLUME DETERMINATION UNDER HANFORD WASTE TANK CONDITIONS - 16281<br />
David M<strong>on</strong>ts, Ping-Rey Jang, Zhiling L<strong>on</strong>g, Olin Nort<strong>on</strong>,<br />
Walter Okhuysen, Yi Su, Charles Wagg<strong>on</strong>er, Mississippi State University (USA)<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> Hanford Site in western Washingt<strong>on</strong> state is currently in the process of an extensive effort to empty and close its radioactive<br />
single-shell and double-shell waste storage tanks. Before this can be accomplished, it is necessary to know how much residual<br />
material is left in a given waste tank and the chemical makeup of the residue.<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> Institute for Clean Energy Technology (ICET) at Mississippi State University is currently developing an quantitative intank<br />
inspecti<strong>on</strong> system based <strong>on</strong> Fourier Transform Profilometry, FTP. FTP is a n<strong>on</strong>-c<strong>on</strong>tact, 3-D shape measurement technique. By<br />
projecting a fringe pattern <strong>on</strong>to a target surface and observing its deformati<strong>on</strong> due to surface irregularities from a different view<br />
angle, FTP is capable of determining the height (depth) distributi<strong>on</strong> (and hence volume distributi<strong>on</strong>) of the target surface, thus<br />
reproducing the profile of the target accurately under a wide variety of c<strong>on</strong>diti<strong>on</strong>s. Hence FTP has the potential to be utilized for<br />
quantitative determinati<strong>on</strong> of residual wastes within Hanford waste tanks. We report the results of a technical feasibility study to<br />
document the accuracy and precisi<strong>on</strong> of quantitative volume determinati<strong>on</strong> using the Fourier transform profilometry technique<br />
under simulated Hanford waste tank c<strong>on</strong>diti<strong>on</strong>s.<br />
D) THE EMERGENCE OF SUSTAINABLE PRACTICE WITHIN DECOMMISSIONING - 16059<br />
David Adams<strong>on</strong>, Sellafield Limited (UK); J<strong>on</strong>athan Francis,University of Central Lancashire (UK)<br />
Despite the advance of sustainable practice and energy efficient techniques outside of the nuclear industry, at the start of the<br />
21st Century there was a lack of published guidance aimed at their adopti<strong>on</strong> at specifically nuclear facilities. Even with the establishment<br />
of the Nuclear Decommissi<strong>on</strong>ing Authority, there is very little guidance published <strong>on</strong> how to adopt sustainable practices<br />
during decommissi<strong>on</strong>ing.<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g>re have been instances where energy efficiency had affected design and operati<strong>on</strong>s decisi<strong>on</strong>s. Projects aimed at resp<strong>on</strong>sible<br />
housekeeping, switching off lights, and changes to the nuclear ventilati<strong>on</strong> design philosophy illustrate a desire for acti<strong>on</strong>, but<br />
these activities were champi<strong>on</strong>ed by interested and motivated employees. Sustainable practice had not at that time received a strategic<br />
lead that resulted in a management structure to enable a coordinated and c<strong>on</strong>certed effort in sustainable practice. This paper<br />
traces the progress during the 20th and early 21st Centuries, whereby sustainable practice is now established within a much firmer<br />
foundati<strong>on</strong> of case study, guidance and organisati<strong>on</strong>al structure; to embed sustainable practice within the United Kingdoms current<br />
decommissi<strong>on</strong>ing programme. It looks at the development of relevant literature and, through interviews with key managers and<br />
external stakeholders, dem<strong>on</strong>strates (i) the degree to which two essential guidance documents (the NiCOP and CIRIA SD:SPUR)<br />
are permeating the industry, (ii) how the current work of the Characterisati<strong>on</strong> and Clearance Group has evolved to influence the<br />
dec<strong>on</strong>taminati<strong>on</strong> and dismantling planning procedures and (iii) the transiti<strong>on</strong> from identifying free-release materials to actually<br />
releasing them for re-use in the community.<br />
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