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Instrumentation for Sodium Circuits; Instrumentation des Circuits de Sodium

Conference:

Abstract

Electromagnetic flow meters, level gauges and differential pressure gauges are among the main measurement instruments designed and tested at the Commissariat a l'Energie Atomique (CEA) for sodium reactors. The main characteristics of the flow meters used with RAPSODIE are indicated. The instruments used in this connection are of the permanent -magnet or electromagnet type (in the primary circuits). A description is given of the calibration methods employed - use is made of diaphragms or Venturi tubes as standard flow meters - and information is given on the results measured for maximum sodium flows of 400 m{sup 3}/h. Three types of continuous level gauge have been studied. Resistance gauge. Two varieties used for the 1 - and 10-MW test circuits of RAPSODIE are described. In one there is a compensation resistance along the whole height of the measuring element (the continuous gauges used with the RAPSODIE reactor are at present of this type). In the other type of gauge a device is incorporated to heat the measurement element and prevent the formation of conducting deposits (prototype sodium tests have been completed). Induction gauge. This type has two coupled coils and is fitted with a device to compensate for temperature effects. A  More>>
Authors:
Cambillard, E.; [1]  Lions, N. [2] 
  1. CEA, Centre d'Etudes Nucleaires de Fontenay-aux-Roses (France)
  2. CEA, Centre d'Etudes Nucleaires de Cadarache (France)
Publication Date:
Jun 15, 1967
Product Type:
Conference
Report Number:
IAEA-SM-85/6
Resource Relation:
Conference: Symposium on Alkali Metal Coolants - Corrosion Studies and System Operating Experience, Vienna (Austria), 28 Nov - 2 Dec 1966; Other Information: 6 refs., 11 figs.; Related Information: In: Alkali Metal Coolants. Proceedings of the Symposium on Alkali Metal Coolants - Corrosion Studies and System Operating Experience| 808 p.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALIBRATION; CEA; COOLANTS; DIAPHRAGM; ELECTROMAGNETS; FLOWMETERS; LIQUID METALS; PERMANENT MAGNETS; PRESSURE GAGES; RAPSODIE REACTOR; REACTOR MATERIALS; SODIUM; VENTURI TUBES
OSTI ID:
22112113
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
French
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M1456069009
Submitting Site:
INIS
Size:
page(s) 617-628
Announcement Date:
Jul 11, 2013

Conference:

Citation Formats

Cambillard, E., and Lions, N. Instrumentation for Sodium Circuits; Instrumentation des Circuits de Sodium. IAEA: N. p., 1967. Web.
Cambillard, E., & Lions, N. Instrumentation for Sodium Circuits; Instrumentation des Circuits de Sodium. IAEA.
Cambillard, E., and Lions, N. 1967. "Instrumentation for Sodium Circuits; Instrumentation des Circuits de Sodium." IAEA.
@misc{etde_22112113,
title = {Instrumentation for Sodium Circuits; Instrumentation des Circuits de Sodium}
author = {Cambillard, E., and Lions, N.}
abstractNote = {Electromagnetic flow meters, level gauges and differential pressure gauges are among the main measurement instruments designed and tested at the Commissariat a l'Energie Atomique (CEA) for sodium reactors. The main characteristics of the flow meters used with RAPSODIE are indicated. The instruments used in this connection are of the permanent -magnet or electromagnet type (in the primary circuits). A description is given of the calibration methods employed - use is made of diaphragms or Venturi tubes as standard flow meters - and information is given on the results measured for maximum sodium flows of 400 m{sup 3}/h. Three types of continuous level gauge have been studied. Resistance gauge. Two varieties used for the 1 - and 10-MW test circuits of RAPSODIE are described. In one there is a compensation resistance along the whole height of the measuring element (the continuous gauges used with the RAPSODIE reactor are at present of this type). In the other type of gauge a device is incorporated to heat the measurement element and prevent the formation of conducting deposits (prototype sodium tests have been completed). Induction gauge. This type has two coupled coils and is fitted with a device to compensate for temperature effects. A description is given of a prototype which has been built and the results obtained in the course of sodium tests are described. Ultrasonic gauge. With this type, a transmitter is fitted on top of the outside of the sodium container; there is also a vertical wave guide, the bottom of which is immersed in the liquid metal and possesses a reflector system which returns the ultrasonic beam towards the surface. Fixed reference marks provide a permanent means of calibration and the whole apparatus is welded. This type of gauge is now being constructed. The differential pressure gauges that have been built, and used in particular with Venturi tube flow meters, are modified versions of the devices employed with the 1 - and 10-MW test circuits of RAPSODIE. A description is given of the modifications carried out in connection with the mechanical zero adjustment and the measurement chain. (author) [French] Les instruments de mesure qui ont ete principalement etudies et experimentes au CEA pour les reacteurs ''a sodium comportent des debitmietres electromagnetiques, des indicateurs de niveau et des manometres differentiels. Les auteurs donnent les caracteristiques principales des debitmietres du reacteur RAPSODIE, qui sont a aimant permanent ou a electro -aimant (sur les circuits primaires). Ils decrivent les methodes d'etalonnage utilisees qui font appel a des diaphragmes ou des Venturis comme debitmietres etalons et indiquent les resultats de mesure obtenus pour des debits de sodium maximaux de 400 m{sup 3}/h. Trois types d'indicateurs continus de niveau ont ete etudies: Indicateur a resistance. Les auteurs decrivent deux variantes equipant les circuits d'essai de RAPSODIE de 1 et 10 MW. L'une comporte une resistance de compensation disposee sur toute la hauteur de l'element de mesure (les indicateurs continus du reacteur RAPSODIE sont actuellement de ce type). L'autre possede un dispositif permettant le chauffage d e l ''element de mesure en vue d {sup e}mpecher la formation- eventuelle de depots conducteurs (les essais en sodium de prototypes sont termines). Indicateur a induction Il comprend deux bobines couplees et un dispositif permettant une compensation des effets de temperature. Les auteurs decrivent le prototype qui a ete construit et indiquent les resultats obtenus au cours des essais en sodium. Indicateur ultra-sons. Il est caracterise par l'utilisation d'un transmetteur place en haut et a l'exterieur de la cuve de sodium, et d'un guide d'ondes vertical dont l'extremite inferieure plongeant dans le metal liquide possede un systeme reflechissant qui renvoie le faisceau ultra-sonore vera la surface. Des reperes fixes permettent un etalonnage permanent; l'ensemble de l'appareil est entierement soude. Cet indicateur est en cours de realisation. Les manometres differentiels actuellement construits et qui ont servi en particulier sur des debitmetres {sup a} venturi sont des versions modifiees des appareils equipant les circuits d'essais de RAPSODIE de 1 et 10 MW. Les auteurs decrivent les modifications qui ont porte sur le reglage mecanique du zero et sur la chaine de mesure. (author)}
place = {IAEA}
year = {1967}
month = {Jun}
}