GLOSSARY OF FRENCH NUCLEAR TERMS

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1 GLOSSARY OF FRENCH NUCLEAR TERMS FOREWORD This glossary is one in a series of reference works from the Foreign Broadcast Information Service. It supersedes and replaces JPRS-EST , 30 May All comments and suggestions, especially contributions for future editions, will be welcomed. Please send such comments and suggestions in writing only (no or calls, please) to: Foreign Broadcast Information Service Language Resources Officer P. O. Box 2604 Washington, D. C

2 INTRODUCTION The material that appears in this glossary was taken from publicly available works. If any user finds an instance where there appears to be an error and wishes to suggest a correction, the editors are eager to review all such comments. Most particularly, suggested new items will be most welcome. This glossary will be reworked periodically and a new edition issued when there is sufficient material to warrant an update. For some foreign abbreviations, there is a preferred English equivalent (e.g., UN for United Nations), and this English version will appear in brackets behind the English translation. FBIS asks all of its translators to use this preferred version and urges other users to do likewise.

3 - A - A alternateur Ac atelier de conversion accident accident le plus grave imaginable accident maximal prévisible ACEREN Appareil de Concentration d'effluents Radioactifs par Evaporation Naturelle AC generator (uranium) conversion shop accident maximum hypothetical accident maximum credible accident Device for Concentrating Radioactive Effluents by Natural Evaporation acier acier boré acier faiblement (fortement) allié acier noir peint boronated steel low-alloy (high-alloy) steel painted steel à-coup à-coup à-coup de surcharge actes de malveillance actif/active action de sécurité activité activité faible Ad atelier de décontamination surge (in power or pressure) sudden overload hostile acts (attack or sabotage), malicious mischief active (often used as short for "radioactive") safety action [measure] activity, level low level, low activity decontamination shop

4 ADR Accord Européen de Transport International par Route ADV (vanne d')admission vapeur AEN Agence pour l'energie Nucléaire agent agent en régie European Accord on International Highway Transport steam inlet (valve) Nuclear Energy Agency worker, employee administrative officer, administrator agglutiner s'agglutiner (autour) A.I. angle d'incidence aiguille (de combustible) aire support alarme sonore ALICE Activités Libérées par une Installation, Conséquences pour l'environnement alimentation alternateur âme aménagement du territoire amorçage amplitude to cluster (around) (statistical values) angle of incidence (fuel) pin (core) support grid acoustic alarm Activities Released by an Installation, Environmental Impact feed, input (for isotope separation) AC generator sheet metal, metal plate zoning flash-over (between brushes of a circuit breaker); priming (of a pump) range, scope, broadness; amplitude (electricity) ANDRA Agence Nationale pour la Gestion National Radioactive Waste des Déchets Radioactifs Management Agency

5 ANG (circuit d')alimentation de générateurs de vapeur anneau de garde anomalie ANS accident nucléaire de sûreté antenne en antenne anti-vol AP assurance produit normal steam generator feed (circuit) guard ring (in a counter tube) error; malfunction nuclear safety accident [in some contexts] feeder (electrical) hooked up, connected tie-down, anti-detaching product assurance APACHE Analyse Probabiliste Automatique Automatic Probabilistic Analysis des Circuits Hydrauliques of Hydraulic Circuits (water (circuits eau notamment) circuits, in particular) APEND Association Professionnelle pour Professional Association for les Essais Non-Destructifs Non-Destructive Testing APG purge générateur de vapeur appareil de chargement apparition appauvri appentis appoint appoint d'eau APRP accident de perte de réfrigérant primaire AR Assainissement Radioactif steam generator purge fuel charging machine occurrence; see "fréquence d'apparition" below depleted (material), spent (fuel) ramp fill-up, makeup makeup of water loss of primary coolant accident, LOCA Radioactive Disposal [Section]

6 arbre (d'une pompe) arbre de défaillance arbre d'événement ARC assainissement radioactif et chimie arcure arrêt arrêt à chaud arrêt définitif arrêt à froid arrêt-marche arrêt programmé arrêt d'urgence arrive arrivée ASG alimentation de secours de générateur de vapeur assèchement assemblage asservissement tout ou rien astreinte AT atelier attente shaft fault tree (in safety analysis) event tree (in safety analysis) radioactive disposal and chemistry buckling (of metal, tube) shutdown hot shutdown (short-term) decommissioning cold shutdown (long-term) stop-start (for automatic counter) scheduled shutdown scram inlet (steam) input (electrical) emergency steam generator feed dry-out (of core when there is a loss of coolant) (fuel) assembly "all or none" control restriction shop, workshop back-up tank (in reactor pressure vessel) attente attente à chaud en l'attente hot standby pending (as preposition)

7 Au arrêt d'urgence audition publique autonomie autoprotection auto-signaleur de prospection auxiliaire "top-priority" and "high- priority" auxiliary equipment auxiliaires superprioritaires et auxiliaires prioritaires avant-bras AVH Atelier de Vitrification de La Hague AVM Atelier de Vitrification de Marcoule emergency shutdown, scram public hearing self-sufficiency (period for which a unit can remain in operation on its own power) self-shielding (of a material) prospecting auto-radiation indicator (usually) auxiliary equipment forearm (a part of the "arm" of the equipment handler) La Hague Vitrification Shop Marcoule Vitrification Shop axe axe du fût axis of the frame; see "fût" axe horizontal de manutention horizontal handling shaft axe de manutention handling shaft

8 - B - BIII [name] BA bâche Bugey III tank bac, bâche bâche de retention bac à surversé bac de vidange or bâche de vidange bague bague dosimètre baie de relayage baisse de charge balayage ballon ballon en charge B.A.N. bâtiment des auxiliaires nucléaires banalisation banalisé bandeau barillet hold-up tank overflow tank surge tank [in some contexts] bushing, ring, sleeve, collar finger badge; film ring (individual dosimeter) relay rack load reduction, load dropoff flushing, scavenging (with an inert gas); scanning (elect.) tank charging tank nuclear auxiliary building adaptation for common use (or multiple users) multipurpose strip hydraulic seal, barrel piston chamber (for moving waste)

9 barre barre d'arrêt d'urgence barre de commande barre de compensation barre de contrôle barre factice barre de pilotage barre de réglage barre de régulation spatiale barre de sécurité barre de sûreté barreau de combustible rod, bar scram [emergency shutdown] rod control rod shim rod (to shape flux in core) control rod dummy rod fine control rod; regulating rod power control rod shim rod (to shape flux in core) safety rod (for scram) safety rod slug (small cylindrical fuel rod) barrière barrière antidiffusion barriére protectrice basculement, basculage fuel rod coating (protects cladding from interacting with fuel) protective coating (similar to "fuel rod coating") switch-over (from one unit to another) bassin bassin d'évacuation bassin de recéption de combustible bassin de stockage pond (for low-level radioactive waste) fuel storage pit storage pool, (fuel) storage pit

10 batterie batterie chaude batterie froide BCI bâtiment de combustible irradié BECC Bureau d'evaluation et de Contrôle des Confinements bélier hot battery (on standby) cold battery (not hooked up; may even be actually in cold environment) irradiated-fuel building Containment Evaluation and Inspection Office water hammer béton béton baryté béton de protection beurrage B.F. basse fréquence BFB Boucle Franco Britannique baryes concrete loaded concrete (to provide protection against radiation) buttering (surfacing of edges of intermediate metal which are to be welded) low frequency Franco-British [Test] Loop BG [English] breeding gain bilan bilan énergétique réaction nucléaire bilan isotopique bilan matière bipasse biunivoque balance, materials balance (of radioactive material; used for bookkeeping) reaction energy, Q-value isotope balance (in isotope separation) material balance (of a system) bypass having one-to-one correspondence

11 B.K. bâtiment combustible BL bâtiment de liaison fuel building connecting building bloc bloc eaux bloc sondage BM, BMg bande magnétique plumbing unit probe unit magnetic tape boîte boîte à eau boîte-filtre boîtier de connexion bonbonne borication bornier bossage bouche de reprise bouchon bouchon tournant bouclier biologique bouffée B.P. basse pression B.R. BR bâtiment réacteur header tank (in steam generator) filter box connector box bottle (for waste transport) boronation limit switch lug (in pressurizer) return aperture plug seal (hydraulic) (on a shield or on cladding) rotary plug biological shield burst (of neutrons); puff (of gas) low pressure breeding ratio reactor building (= containment)

12 branche chaude (froide) brasquage (met.) brèche bride brique de plomb broche de maintien brûlage brûlé brutal B.S. barre de sécurité B.T. basse tension b.t. bilan thermique B.U. branche en U buselure butée BW bâtiment périphérique hot (cold) leg (of circulation system) brasquing rupture, hole (of pipe, container) flange, stop (most often), collar (of reactor pressure vessel) lead log (for radiation protection) positioning pin (in control rod assembly) fuel burn-out burned-up, spent (fuel) abrupt, sudden, sharp safety rod low voltage heat balance U-shaped leg tip (of pipe in reactor pressure vessel) thrust bearing, stop peripheral building

13 - C - CA circuit d'alimentation câble d'alimentation cadence de scrutation cage de transport cahier de quart caisse à huile feed circuit, power supply circuit power cable scan frequency, scan rate bird cage (used to transport and store radioactive materials) shift logbook; see "quart" below oil tank caisson caisson en béton précontraint caisson du coeur caisson de dégazage caisson filtre caisson à gants caisson de réacteur caisson de zircalloy caisson de zirconium calculateur de conduite caléfaction calibration d'une barre de commande caloporteur prestressed-concrete reactor vessel (PCRV) chamber degassification chamber filter box glove box (for handling hot material) reactor pressure vessel zircalloy chamber zirconium shield; zirconium cladding [in some contexts] control computer burn-out (a film of vapor between a heat source and a liquid; also local vaporization of fuel cladding) control rod weighing coolant

14 calorifuge calotte CAMARI Certificat d'aptitude à Manipuler des Appareils de Radiologie Industrielle campagne de traitement canal canal biologique canal chaud canal de chargement canal expérimental canalisation canne canalisation montante canne chauffante CAP Chaufferie Avancée Prototype capote captage capteur carottage radiométrique carte de flux heat insulation spherical center disk (of reactor vessel) Certificate of Proficiency To Handle Industrial Radiology Equipment reprocessing program canal, [more often] channel biological hole hot channel fueling channel, loading channel irradiation channel pipe, piping riser (pipe) rod (in pressurizer) heating rod (in pressurizer) Prototype Advanced Nuclear Boiler hood impoundment (of water) detecting element, sensor, pick-up radioactive logging flux plot carter carter d'entrée d'eau carter de palier carter de sortie d'eau water inlet housing bearing housing water discharge housing

15 cartouche fausse casemate CASP contacteur d'alternateur super-prioritaire casse-siphon casse-vide dummy (fuel) pellet hot cell, hot cave (for "hot" materials) top-priority AC generator contactor siphon breaker (valve) vacuum breaker (valve) CASTEM Calcul et Analyse des Structures Thermal and Mechanical Design en Thermique et Mécanique and Analysis of Structures caverne (de réacteur) cavité biologique CC courant continu CCAP Commission Centrale des Appareils à Pression CCT circuit de contournement de la turbine CCT circuit de contrôle de température CDA couche de demi-atténuation C de F, CDF courant de Foucault CDG commande directe groupe C.D.M. centralisateur de mesures CDSN Centre de Documentation sur la Sécurité Nucléaire underground part of reactor biological hole direct current (DC) Central Commission on Pressurized Equipment turbine bypass circuit temperature control circuit half-value layer Foucault current, eddy current set direct control central test value recording system Nuclear Safety Documentation Center

16 ce, C.E. colonne d'eau C.E. comportement expansion C.E.A. Commissariat à l'énergie atomique CEC chimie - études de conditionnement C.E.E.A. Communauté européenne de l'énergie atomique CEI cellule d'éléments irradiés water gauge (abbreviated WG or H 2 O) expansion behavior Atomic Energy Committee chemistry - conditioning studies European Atomic Energy Community irradiated (fuel) element cell cellule cellule chaude cellule de haute activité C.E.M. Centre d'etudes Montlhéry C.E.N. centre d'études nucléaires CENG Centre d'etudes Nucléaires Grenoble CEN-S Centre d'etudes Nucléaires - Saclay centrale nucléaire centralisateur de mesures CERCA Compagnie pour l'étude et la réalisation de combustibles atomiques hot cell shielded cell Montlhery Research Center nuclear research center Grenoble Nuclear Research Center Saclay Nuclear Research Center nuclear power plant, NPP central test value recording system Company for the Study and Development of Atomic Fuel

17 CEREM Commission d'etudes et de Recherches pour les Economies de Matières CET circuit d'étanchéité des labyrinthes CG chromatographie de gaz ch cheval chaîne chaîne de contrôle d'un rayonnement chaîne de démarrage interdit chaîne de démarrage mobile chaîne d'épuration chaîne de mesure chaîne de pilotage chaîne de protection chaîne de sécurité chaîne de sécurité en 2/3 charge charge corporelle maximale admissible chargement charger Research and Development Committee for Material Economy (labyrinth) seal circuit, packing circuit gas chromatography horsepower, HP [usually] chain, chain reaction radiation channel inhibited start-up chain movable starting chain purge [decontamination] chain measuring channel control channel (of a reactor) safety channel safety channel 2 out of 3 safety channel load (power, water); burden (personal dose) maximum permissible body burden loading (of a computer memory); charging (of a fluid bed, a reactor) to fuel, to load (a reactor) chariot chariot de direction chariot de translation drive cart [in some contexts] transfer cart

18 château château de combustible irradié château d'eau château de plomb château poubelle château de transfert château de transport chaudière chaussette chef de quart chemin critique irradiated fuel handling cask water tower lead castle (to protect a sensor against spurious radiation) drum cask (cask with inserted drum for waste transport) shipping cask shipping cask boiler (nuclear) thimble (closure tube on end of a safety rod) shift supervisor, shift foreman critical path (in process analysis) cheminée cheminée de rejet cheminée de ventilation cheminement choix de sites choucage chronologie vent stack vent stack push through (means of rearranging fuel rods); routing (of messages) siting (of nuclear facilities) chugging (in BWR) sequence of events, history chute chute de barres chute de barres volontaire chute libre chute de pression scram (when deliberate); rod free-fall (when accidental) deliberate scram free fall (of rods) pressure drop

19 CI circuit imprimé CIAT Comité interministériel d'aménagement du territoire CIDN Centre d'information sur les Déchets Nucléaires ciel d'azote CIINB Commission interministérielle des installations nucléaires de base circuit circuit d'appoint d'eau circuit de contre-pression circuit de couche chaude circuit de couche chaude épurée circuit d'échelle circuit d'échelle en anneau circuit d'épuration circuit d'équilibre circuit expérimental CIREA Commission Interministérielle pour l'application des Radioéléments Artificiels CIS circuit d'injection de secours cisaillage cisaille printed circuit (board), PCB Interministerial Zoning Committee Radioactive Waste Information Center layer of nitrogen (as cover gas) Interministerial Board on Basic Nuclear Installations loop, circuit water makeup circuit counterpressure circuit, back-pressure circuit hot-layer circuit purged hot-layer circuit scaling circuit ring scaling circuit purification circuit, purging circuit balance circuit experimental loop Interministerial Board for the Use of Artificial Radioelements emergency injection circuit chopping (of "hot" parts for disposal) chopper (for cutting up parts for disposal)

20 clapet clé clef clapet de refoulement clé de déverrouillage clé de manoeuvre clef à trois positions C.M.A. concentration maximale admissible c/min coups/minute CMP concentration maximale permise CNL Centrale nucléaire Lucens C.N.R.S. Centre Nationale de la Recherche Scientifique valve delivery valve wrench, key, switch unlocking key control key see "clé" three-position switch maximum permissible concentration [use MPC] pulses [counts]/minute maximum permitted concentration Lucens Nuclear Power Plant (Switzerland) National Scientific Research Center coefficient coefficient de charge coefficient de vide coffret de raccordement cofilage COFREND Comité Français des Essais Non-Destructifs COGEMA Compagnie Générale de Matières Nucléaires colaminage weighting factor void coefficient of reactivity system connection box (elect.) coextruding (method of manufacturing fuel elements) French Non-Destructive Testing Committee General Nuclear Materials Company roll bonding (method of manufacturing fuel elements)

21 manual controls for trouble- shooting collecteur de retour colorant combustible combustible appauvri combustible épuisé combustion combustion nucléaire COMHUREX conversion de l'uranium en métal et hexafluorure commande (d'un réacteur) commande par absorption commande par le combustible commande manuelle de dépannage commutation compact compensation compensation chimique compensé COMURHEX Société pour la conversion de l'uranium en métal et hexafluorure concentration maximale admissible return collector, collector (can be "header") dye (for crack or leak detection) fuel depleted fuel spent fuel burn-up (of fuel) burn-up conversion of uranium into metal and hexafluoride (reactor) control absorption control fuel control replacement (e.g., of an instrument) densely packed (lattice or grid) shimming (coarse control of reactivity) chemical shimming equilibrated, balanced, offset Company for Conversion of Uranium into Metal and Hexafluoride maximum permissible concentration [use MPC]

22 concentré concentré uranifère concentré d'uranium yellowcake yellowcake condition condition limite condition aux limites conducteur du pile conduit de lumière conduite (d'un réacteur) cône de raccordement consignation consigner consistance constante de débit d'exposition constatation(s) continu contournement contrainte contrôle contrôle chimique et volumétrique contrôle individuel contrôle d'isolement boundary condition boundary condition supervisor light guide, light pipe (reactor) control adapter write-out (of report, procedure); blocking, locking (e.g., of a valve in a certain position) to isolate (e.g., a diesel) scope (of work, of a job) exposure rate constant finding(s) continuous [as opposed to discrete]; round-the-clock bypass (flow or valve) stress; constraint control, monitoring, supervision [selection of translation will depend entirely on context; in general, covers all of the actions intended to ensure proper reactor operation and safety] chemical and volume control personal dosimetry isolation control

23 coque contrôle thermique heat control hull (part of fuel element left after fuel is dissolved) corps corps basse pression corps étranger corrosion sous tension cosse cote d'approche coude coude chaud couloir de circulation coup coup de bélier coup parasite coup de poing coupe coupe minimale couple de serrage coupler (un réacteur) au réseau coupure d'alimentation low pressure body (of turbine) foreign object [not foreign body] stress corrosion eye, lug; terminal (electrical) approach distance; height (of rods); dimension elbow, bend (of pipe) hot leg passageway count (in counter) water hammer spurious count pushbutton [in some contexts] cut (in probability analysis) minimal cut (in probability analysis) torque load to put (a reactor) on line power loss, power outage, black-out courant courant "tirants" coussinet couvercle (de la cuve) "consumers" of current shell (of bearing) closure, top head (of reactor pressure vessel)

24 c.p., CP circuit primaire CP contrat pluriannuel CP contrôle périodique CP1 Contrat programme no. 1 (palier 900 MWe) CPAL ciment Portland artificiel au laitier CPD circuit primaire dérive CPL chromatographie par liquide CPS concentration par solvants CR compte-rendu crayon CRE compartiment réacteur échangeur crevaison (du réfrigérant) CRI circuit de réfrigérant intermédiaire CRI compte-rendu d'incident crochet croissance CS centre de stockage primary circuit multiyear contract regular inspection; spot check No. 1 Program Contract (900 MWe reactor line) Portland blast-furnace cement primary derivation (for electric power) liquid chromatography solvent concentration report pencil (of fuel) reactor [heat] exchanger compartment puncture (allowing coolant to leak) intermediate cooling circuit incident report hook (of a crane) growth (of an element); rise (of a value) (fuel) storage center

25 C/S comptes [coups] par seconde CSC Commission Sûreté Criticité CSDR (Echelon de) Coordination et de Synthèse en Matière de Déchets Radioactifs CSM Centre de Stockage de La Manche CTA coefficient de transfert atmosphérique CU charge utile culasse culasse poubelle cuve de sécurité CVA Centre d'etudes Valduc cyclage counts per second Criticality Safety Board Radioactive Waste Coordination and Synthesis Service La Manche Storage Center atmospheric transport coefficient capacity, payload (of truck) yoke, head (of cylinder) end piece (of fuel channel) containment Valduc Research Center cycling (variation in reactor power) cycle cycle à passage unique once-through fuel cycle

26 - D - D (groupe électrogène) Diesel DADINE Détermination d'alpha par Diffusion Neutronique DAED Directeur Adjoint Chargé des Effluents et des Déchets Radioactifs dalle DB documentation et bibliographie Diesel (generating set) Alpha Determination by Neutron Diffusion Deputy Director in Charge of Radioactive Effluents and Waste ledge (for camera in reactor) documentation and bibliography dêbitmètre à hélice de précision precision flowmeter début de vie décalage décalorifugeage déchet déchets radioactifs déclarer déclenchement déclencheur décohésion déconsignation découpage start of service life shift, dephasing, displacement removal of heat insulation waste (generally in solid form or to be converted to solid form for disposal) radioactive waste to report (a malfunction) trip(ping) (of turbine or reactor) trip, trigger, trip circuit separation (of layers, metal); flaking, peeling (of paint) cancellation (of an order); release (of a valve from the locked position); removal (of a diesel) from isolation breakdown (of system into elements)

27 découvrement décrochement défaillance défaillance de matériel défaillance de mode commun défaillance simple défaut défaut de conception défaut fugitif déférer à défiler défournement dégâts matériels dégonflage dégradation de vide DEL production/distribution eau glacée dans les locaux électriques [sic] délestage (de puissance) délestée démarche démarche systématique démarrage exposure (of core due to lack of coolant) unhooking, disconnecting, uncoupling (of two pipes that fit together) failure equipment failure common mode failure single failure (criterion in safety analysis) defect (of metal); flaw, fault, malfunction design flaw transient fault to comply with, to obey (a law) to scan (to move a sensor or camera past a piece of equipment to be checked) unloading (of fuel from core) property damage depressurization, reduction of pressure decay of vacuum production/distribution of chilled water in electric rooms load-shedding; power reduction no-load approach (to a problem or analysis) systems approach start-up (of reactor)

28 DEMT Département des Etudes Mécaniques et Thermiques D.E.N. début d'ébullition nucléé dénoyage départ usine dépassement déperditions caloriques dépistage déplacement déplacement radioactif dépôt radioactif sec dépression dépressurisation désactiver désarmorçage désassemblage déséclusage destinataires déstockage détarer Department of Thermal and Mechanical Research start of nucleate boiling exposure (of core) FOB factory violation, passing (of a threshold) heat losses detection displacement; shift (in spectrometry) radioactive displacement radioactive dry deposit drop in pressure, lowering of pressure, underpressure blowdown, pressure reduction to decontaminate; to disable (function, equipment) draining, dewatering (of a pump) dismantling (of a fuel assembly) opening (of door); leak distribution (list) (for a document) removal from storage (waste) to lose calibration, to decalibrate

29 détecteur détecteur d'activité de gaz détecteur à colonne internal gas detector column detector détecteur de rupture de gaine burst can detector détection de rupture de gaine détente détournement failed fuel element detection expansion (of a chamber); pressure relief; decompression diversion (of radioactive material for illicit purposes) deux en deux sur trois déverminage déverrouillage déverseur DEX début de l'exposition DG disjoncteur de groupe Dg DSN Délégué de Protection et de Sûreté Nucléaire diagnostiquer diaphragme à chambre annulaire D.I.I. Direction Interdépartementale de l'industrie dilatation dilution de la matière fissile dimensionnant (adj.) 2 out of 3 (in a decision gate, if 2 relays out of 3 are in one position, that is how the decision goes) debugging (of computer program, system) unlocking with key channel, spillway, overflow start of exposure set breaker (electrical) Protection and Nuclear Safety Delegate to diagnose annulus diaphragm Interdepartmental Office of Industry spreading, expansion, extension [in some contexts "surge"] core dilution design, decisive (incident)

30 dimensionner DIP Département d'industrialisation des Procédés diphasique discriminateur disparition secteur dispersion dispositif de suspension DL disjoncteur de ligne to size Process Industrialization Department two-phase (flow) discriminator, gate, circuit sector outage dispersion, spread (in statistics); disparity shut-off device line circuit-breaker DL50 dose létale 50% lethal dose 50 (LD 50 ) DLM dose létale moyenne D.M.A. dose maximale admissible mean lethal dose (MLD) maximum permissible dose D.N.B. [English] departure from nucleate boiling dose dose engagée dose; proportion dose commitment (from incorporation of a nuclide, or mean of individual organ dose in a population) double double écart type double enveloppe doublement doubler douille two standard deviations (in statistics) double shell (of reactor building) duplication; redundancy to duplicate; to provide with redundancy socket (elect.), tubular casing, bush, sleeve

31 DPGR détection de poussières et gaz radioactifs DPM dispositif principal de manutention D.R.G., DRG détection de rupture de gaine DRGG détection de rupture de gaine générale droit au droit de DS début de séjour D.S. déchets solides D.S. dose surface D.S.N. Département de sûreté nucléaire DT Groupe Décontamination Transports dudgeonage dur durer D.V.K. ventilation du bâtiment combustible detection of radioactive dust and gas main (fuel) handling machine failed fuel element [burst can] detection (system) general failed fuel element (burst can) detection [system] right (privilege, direction) [generally]; straight at right angles to, facing, opposite; at start of stay, start of residence solid (radioactive) waste surface dose (rate) Nuclear Safety Department Decontamination and Transport Group expansion (of a tube); beading (in welding, disposition of weld bead) hard (radiation) [adjective]; sticking, stiffness [noun] to take (time) fuel building ventilation (system)

32 - E - E.A.S. circuit d'aspersion de l'enceinte containment spray circuit eau eau alimentaire eau aspirée eau bouillante eau d'appoint eau pressurisée feedwater intake water boiling water (type of reactor) makeup water pressurized water (type of reactor) ébullition ébullition en filme ébullition nucléée écart type échange thermique échelle échelle de comptage à différence écope film boiling nucleate boiling standard deviation (in statistics) heat exchange ladder, scale difference scaler scoop (on primary pipe) écoulement écoulement à bouchons écoulement diphasique écrêteur EdF, EDF Electricité de France édition slug flow (in hydrodynamics) two-phase flow limiter, chopper [French national electric power company] printout, display; editing

33 EDMA équivalent de dose maximale admissible EDTA [English] effacement du voile de fond (emulsions nucléaires) maximum permissible dose equivalent [use MPDE] ethylene diamino tetracetic acid (a chelating dose equivalent agent) background eradication effet effet de canalisation effet de ciel effet de fond effet d'ombre efficacité efficacité différentielle effluents (liquides et gazeux) effort d'envol effritement E.G. études générales egoine électricien électromécanisme de commande linéaire électropompe d'alimentation de secours streaming (of radiation) skyshine background effect shadowing efficiency; (control rod) worth differential control rod worth (gaseous, liquid) effluents detachment force (in an accident) fretting (type of wear) general studies, general research hacksaw utility (company) linear electric control mechanism emergency feed pump élément élément d'arrêt d'urgence élément de contrôle emergency shutdown member, scram member control member

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