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Decommissioning of the Risoe Hot Cell facility. 4. Periodic report covering January 1 to June 30, 1992

Technical Report:

Abstract

The main activities described in the 4th periodic report on the decommissioning of the hot cell facility at Risoe National Laboratory are the start of the transfer of the last fissile material, the removal of a large amount of highly contaminated material, the reclassification of a minor ``red`` contaminated area to ``blue``, and a minor ``blue`` contaminated area to a clean area, and a survey of the contamination and radiation levels on the shutters and the shutter housings. The main contaminant was Cs{sup 137}, and the highest level of contamination was found on top of the shutters. The contamination levels appeared to be rather scattered. Work was begun on collecting information on the condition of the concrete cell line. Tables illustrate the contamination on shutters and shutter housings, and {beta}/{gamma} maximum dose rates on the inner surface of the shutter housings. A diagram illustrates the location of smear tests on the shutter arrangement, and ``three-dimensional`` graphs illustrate the suppressed maximum values of the shutter contamination. A plan of the hot cell facility at floor level is also given. A collective dose of 6 man-mSv was ascribed to 10 persons in the first half of 1992, arising mainly from work on  More>>
Authors:
Publication Date:
Aug 01, 1992
Product Type:
Technical Report
Report Number:
RISO-HOT-DECOM-P-4
Reference Number:
SCA: 560180; PA: AIX-24:006192; SN: 93000931256
Resource Relation:
Other Information: PBD: Aug 1992
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; HOT CELLS; DECOMMISSIONING; CESIUM 137; DECONTAMINATION; DOSE RATES; RISOE NATIONAL LABORATORY; SHUTTERS; 560180; RADIATION PROTECTION PROCEDURES
OSTI ID:
10118841
Research Organizations:
Risoe National Lab., Roskilde (Denmark). Materials Dept.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE93611740; CNN: Contract FI2D-0011-DK; TRN: DK9200147006192
Availability:
OSTI; NTIS; INIS
Submitting Site:
DKN
Size:
[15] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Carlsen, H. Decommissioning of the Risoe Hot Cell facility. 4. Periodic report covering January 1 to June 30, 1992. Denmark: N. p., 1992. Web.
Carlsen, H. Decommissioning of the Risoe Hot Cell facility. 4. Periodic report covering January 1 to June 30, 1992. Denmark.
Carlsen, H. 1992. "Decommissioning of the Risoe Hot Cell facility. 4. Periodic report covering January 1 to June 30, 1992." Denmark.
@misc{etde_10118841,
title = {Decommissioning of the Risoe Hot Cell facility. 4. Periodic report covering January 1 to June 30, 1992}
author = {Carlsen, H}
abstractNote = {The main activities described in the 4th periodic report on the decommissioning of the hot cell facility at Risoe National Laboratory are the start of the transfer of the last fissile material, the removal of a large amount of highly contaminated material, the reclassification of a minor ``red`` contaminated area to ``blue``, and a minor ``blue`` contaminated area to a clean area, and a survey of the contamination and radiation levels on the shutters and the shutter housings. The main contaminant was Cs{sup 137}, and the highest level of contamination was found on top of the shutters. The contamination levels appeared to be rather scattered. Work was begun on collecting information on the condition of the concrete cell line. Tables illustrate the contamination on shutters and shutter housings, and {beta}/{gamma} maximum dose rates on the inner surface of the shutter housings. A diagram illustrates the location of smear tests on the shutter arrangement, and ``three-dimensional`` graphs illustrate the suppressed maximum values of the shutter contamination. A plan of the hot cell facility at floor level is also given. A collective dose of 6 man-mSv was ascribed to 10 persons in the first half of 1992, arising mainly from work on the shielded storage facility and handling of wastes. (AB).}
place = {Denmark}
year = {1992}
month = {Aug}
}