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Selective noble gases monitoring

Abstract

The monitoring of leak releases from ventilation stack of NPP requires a system by several orders more sensitive then currently used radiometer Kalina, designed to cover the range up to a design-based accident. To reach this goal a noble gases monitor with a germanium detector (MPVG) has been developed. It enables nuclide selective monitoring of current value of volume activity of particular nuclides in ventilation stack and daily releases of noble gases (balancing). MPVG can be viewed as a system build of three levels of subsystem: measuring level; control level; presentation level. Measuring level consists of gamma-spectroscopy system and operational parameters monitoring unit (flow rate, temperature, humidity). Control level provides communication between presentation and measuring level, acquisition of operational parameters and power supply. The presentation level of MPVG enables: 1) the measured data storage in predetermined time intervals; 2) the presentation of measured and evaluated values of radiation characteristics. The monitored radionuclides - default set: argon-41, krypton-85m, krypton-87, krypton-88, krypton-89, xenon-131m, xenon-133, xenon-133m, xenon-135, xenon-135m, xenon-137 and xenon-138. The values of volume activities observed at maximum releases have been approximately ten times higher. In that case in balancing some other nuclides exceed corresponding detection limits: {sup 88}Kr(67; 22) Bq/m{sup 3};  More>>
Authors:
Janecka, S; Jancik, O; Kapisovsky, V; Kubik, I; Sevecka, S [1] 
  1. Nuclear Power Plants Research Institute, a.s., Trnava (Slovakia)
Publication Date:
Dec 31, 1995
Product Type:
Miscellaneous
Report Number:
INIS-SK-97-001; CONF-9511264-
Reference Number:
SCA: 560101; 540200; PA: AIX-28:074056; EDB-98:003598; SN: 97001879445
Resource Relation:
Conference: 19. radiation hygiene days (RHD) Jasna, Jasna Pod Chopkom (Slovakia), 20-23 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of 19th Radiation Hygiene Days. Conference Proceedings; PB: 208 p.
Subject:
56 BIOLOGY AND MEDICINE, APPLIED STUDIES; 54 ENVIRONMENTAL SCIENCES; RARE GASES; RADIATION MONITORING; ARGON 41; AUTOMATION; COMPUTER-AIDED MANUFACTURING; EXPERIMENTAL DATA; GAMMA DETECTION; GAMMA SPECTROSCOPY; GE SEMICONDUCTOR DETECTORS; KRYPTON 85; KRYPTON 87; KRYPTON 88; KRYPTON 89; LEAK DETECTORS; LEAK TESTING; RADIATION DETECTION; RADIATION PROTECTION; RADIOMETRIC ANALYSIS; REACTOR MONITORING SYSTEMS; WWER TYPE REACTORS; XENON 131; XENON 133; XENON 135; XENON 137; XENON 138
OSTI ID:
551078
Research Organizations:
Slovak Medical Association, Bratislava (Slovakia). Society of Nuclear Medicine and Radiation Hygiene; Institute of Preventive and Clinical Medicine, Bratislava (Slovakia); State Specialized Health Inst., Banska Bystrica (Slovakia)
Country of Origin:
Slovakia
Language:
English
Other Identifying Numbers:
Other: ON: DE98604320; TRN: SK97K0241074056
Availability:
INIS; OSTI as DE98604320
Submitting Site:
INIS
Size:
pp. 182-193
Announcement Date:

Citation Formats

Janecka, S, Jancik, O, Kapisovsky, V, Kubik, I, and Sevecka, S. Selective noble gases monitoring. Slovakia: N. p., 1995. Web.
Janecka, S, Jancik, O, Kapisovsky, V, Kubik, I, & Sevecka, S. Selective noble gases monitoring. Slovakia.
Janecka, S, Jancik, O, Kapisovsky, V, Kubik, I, and Sevecka, S. 1995. "Selective noble gases monitoring." Slovakia.
@misc{etde_551078,
title = {Selective noble gases monitoring}
author = {Janecka, S, Jancik, O, Kapisovsky, V, Kubik, I, and Sevecka, S}
abstractNote = {The monitoring of leak releases from ventilation stack of NPP requires a system by several orders more sensitive then currently used radiometer Kalina, designed to cover the range up to a design-based accident. To reach this goal a noble gases monitor with a germanium detector (MPVG) has been developed. It enables nuclide selective monitoring of current value of volume activity of particular nuclides in ventilation stack and daily releases of noble gases (balancing). MPVG can be viewed as a system build of three levels of subsystem: measuring level; control level; presentation level. Measuring level consists of gamma-spectroscopy system and operational parameters monitoring unit (flow rate, temperature, humidity). Control level provides communication between presentation and measuring level, acquisition of operational parameters and power supply. The presentation level of MPVG enables: 1) the measured data storage in predetermined time intervals; 2) the presentation of measured and evaluated values of radiation characteristics. The monitored radionuclides - default set: argon-41, krypton-85m, krypton-87, krypton-88, krypton-89, xenon-131m, xenon-133, xenon-133m, xenon-135, xenon-135m, xenon-137 and xenon-138. The values of volume activities observed at maximum releases have been approximately ten times higher. In that case in balancing some other nuclides exceed corresponding detection limits: {sup 88}Kr(67; 22) Bq/m{sup 3}; {sup 85m}Kr(17; 7) Bq/m{sup 3}; {sup 135m}Xe(7.1; 0.5) Bq/m{sup 3}; {sup 138}Xe(5.9; 0.9) Bq/m{sup 3}. (J.K.).}
place = {Slovakia}
year = {1995}
month = {Dec}
}