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TNO experience on sodium cleaning of large plant components by vacuum distillation

Abstract

The Intermediate Heat Exchanger and Steam generators developed within the framework of the SNR-programme are being tested in the 50 MW Test facility at Hengelo - The Netherlands. The facility was designed and built by Neratoom, and is operated by TNO, the Dutch Organisation for Applied Scientific Research. Sodium technology work, such as reported in this paper, is done in close cooperation with Neratoom and with TNO-laboratories at Apeldoorn, where several smaller sodium rigs and other facilities are available. The operation and maintenance of a large sodium test facility and sodium rigs lead to frequent cleaning of small plant components, test sections and sampling devices. The choice of method usually depends on the size of the component and the cleaning quality needed. The results are predictable and satisfactory. For large components, however, the situation is different. Although the basic cleaning methods using alcohol and moist gas are well-known, and procedures for the cleaning of small components are available, complete cleaning of tight crevices and threaded bolds cannot be guaranteed, and consequently the requalification procedure needs to include a complete disassembly and inspection of the cleaned component. For large components this policy cannot always be followed. In those cases for instance  More>>
Authors:
Smit, C Ch [1] 
  1. MT-TNO Dept. 50-MW Sodium Component Test Facility, Hengelo (Netherlands)
Publication Date:
Aug 01, 1978
Product Type:
Conference
Report Number:
IWGFR-23
Reference Number:
EDB-01:030705
Resource Relation:
Conference: IAEA-IWGFR specialists meeting on sodium removal and decontamination, Richland, WA (United States), 14-16 Feb 1978; Other Information: 2 figs; PBD: Aug 1978; Related Information: In: Specialists meeting on sodium removal and decontamination. Summary report, 213 pages.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; CLEANING; DECONTAMINATION; HEAT EXCHANGERS; REACTOR COMPONENTS; SNR REACTOR; SODIUM; STEAM GENERATORS; TEST FACILITIES; VACUUM DISTILLATION
OSTI ID:
20146262
Research Organizations:
International Atomic Energy Agency, International Working Group on Fast Reactors, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
TRN: XA0100466011784
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
page(s) 8-12
Announcement Date:
Apr 16, 2001

Citation Formats

Smit, C Ch. TNO experience on sodium cleaning of large plant components by vacuum distillation. IAEA: N. p., 1978. Web.
Smit, C Ch. TNO experience on sodium cleaning of large plant components by vacuum distillation. IAEA.
Smit, C Ch. 1978. "TNO experience on sodium cleaning of large plant components by vacuum distillation." IAEA.
@misc{etde_20146262,
title = {TNO experience on sodium cleaning of large plant components by vacuum distillation}
author = {Smit, C Ch}
abstractNote = {The Intermediate Heat Exchanger and Steam generators developed within the framework of the SNR-programme are being tested in the 50 MW Test facility at Hengelo - The Netherlands. The facility was designed and built by Neratoom, and is operated by TNO, the Dutch Organisation for Applied Scientific Research. Sodium technology work, such as reported in this paper, is done in close cooperation with Neratoom and with TNO-laboratories at Apeldoorn, where several smaller sodium rigs and other facilities are available. The operation and maintenance of a large sodium test facility and sodium rigs lead to frequent cleaning of small plant components, test sections and sampling devices. The choice of method usually depends on the size of the component and the cleaning quality needed. The results are predictable and satisfactory. For large components, however, the situation is different. Although the basic cleaning methods using alcohol and moist gas are well-known, and procedures for the cleaning of small components are available, complete cleaning of tight crevices and threaded bolds cannot be guaranteed, and consequently the requalification procedure needs to include a complete disassembly and inspection of the cleaned component. For large components this policy cannot always be followed. In those cases for instance where an in-between internal inspection is required, or where only small modifications of the test object are necessary, other possibilities have to be considered. For this reason some work has been done to develop reliable vacuum distillation procedures for large components, based on the cleaning experience with small plant components. The results of these procedures applied to large plant components are reported in this paper.}
place = {IAEA}
year = {1978}
month = {Aug}
}