EP0626536A1 - Dampferzeuger ausgerüstet mit einem Fremdpartikelfilter - Google Patents
Dampferzeuger ausgerüstet mit einem Fremdpartikelfilter Download PDFInfo
- Publication number
- EP0626536A1 EP0626536A1 EP94401140A EP94401140A EP0626536A1 EP 0626536 A1 EP0626536 A1 EP 0626536A1 EP 94401140 A EP94401140 A EP 94401140A EP 94401140 A EP94401140 A EP 94401140A EP 0626536 A1 EP0626536 A1 EP 0626536A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- trapping
- envelope
- tubes
- generator according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/002—Component parts or details of steam boilers specially adapted for nuclear steam generators, e.g. maintenance, repairing or inspecting equipment not otherwise provided for
- F22B37/003—Maintenance, repairing or inspecting equipment positioned in or via the headers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/023—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes, for nuclear reactors as far as they are not classified, according to a specified heating fluid, in another group
- F22B1/025—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes, for nuclear reactors as far as they are not classified, according to a specified heating fluid, in another group with vertical U shaped tubes carried on a horizontal tube sheet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
Definitions
- the invention relates to a steam generator adapted for use in a nuclear power plant.
- a steam generator equipping a nuclear power plant usually comprises an envelope with a vertical axis, the interior space of which is divided into two parts, in the direction of the height, by a horizontal plate called “tube plate” (in English “tube sheet”).
- the ends of the tubes of an inverted U-shaped tube bundle are fixed on the tube plate and open below it, respectively in an intake manifold and in a collector for evacuating the water circulating in the primary reactor circuit, called “primary water”.
- the water circulating in the secondary circuit of the reactor called “secondary water” or “edible water” is injected into the part of the steam generator located above the tube plate.
- This edible water vaporizes on contact with the tubes, due to the heat carried by the primary water.
- the steam thus formed is extracted from the steam generator after having successively passed through cyclone separators placed in substantially vertical pipes, then dryers situated in the upper part of the envelope, above the pipes containing the cyclone separators.
- Migrant bodies can also arrive in the tube bundle through the conduits of the cyclone separators connecting the part where the tube bundle is located to the dryers.
- These migrant bodies coming from the dryer area are either objects such as a screw detaching from a dryer during operation, or objects introduced into the space located between the upper plate of the cyclone separators and the dryers during assembly or maintenance work in the generator and forgotten in the steam generator.
- the subject of the invention is precisely a steam generator comprising a device making it possible to trap the migrant bodies coming from the dryers, in order to prevent them from being able to come to be trapped between the tubes of the bundle.
- the means for trapping the migrant bodies delimit passages which have a maximum dimension less than the minimum distance separating the tubes from the beam.
- the means for trapping migrant bodies can occupy either substantially the entire section of the envelope of the steam generator, or only be located above each of the pipes.
- the means for trapping migrant bodies preferably comprise several trapping elements forming slabs, for example square, placed above a horizontal plate to which the upper ends of the conduits are fixed.
- Each trapping element may in particular comprise a supporting structure forming a floor, on which a trapping grid is placed. This arrangement makes it possible to use the trapping means as a working floor during assembly or maintenance work.
- Each trapping element is advantageously fixed, by removable and preferably captive fixing means such as bolts, on horizontal beams fixed above the above-mentioned horizontal plate and the outlets of the separators.
- the reference 10 designates the outer envelope of revolution, of vertical axis, of a steam generator intended to ensure the transfer of heat between the primary water circuit and the secondary water / steam circuit of a pressurized water nuclear reactor.
- This envelope 10 delimits an enclosed interior space which is separated into a primary lower zone and a secondary upper zone by a horizontal tube plate 12 tightly connected to the envelope 10.
- a vertical partition 14 divides the primary lower zone, usually called “water box”, into an intake manifold 16 and an evacuation manifold 18 of the water flowing in the primary circuit (not shown) of the reactor.
- a bundle of inverted U-shaped tubes 24 is tightly connected to the tube plate 12, in the secondary upper zone delimited by the latter. More precisely, the two ends of each of the tubes 24 open respectively into the intake manifold 16 and into the exhaust manifold 18. Thus, the primary water admitted into the steam generator through the intake manifold 16 circulates in the tubes 24 before leaving the device through the evacuation manifold 18.
- the bundle of tubes 24 is surrounded and capped by an interior envelope 26 arranged coaxially in the exterior envelope 10.
- the lower edge of the interior envelope 26 is placed at a predetermined distance above the tube plate 12, so to form a passage by which an annular space 28, delimited between the envelopes 10 and 26, communicates with a space 30 inside the envelope 26.
- drinking water is introduced into the steam generator via a supply line 42 which passes radially through the outer envelope 10 at a level close to the upper part of the inner envelope 26, covering the bundle of tubes 24.
- This supply line 42 opens into a manifold O-ring 44 centered on the vertical axis of the steam generator and provided over its entire periphery with inverted J-shaped tubes 46 by which the drinking water is injected into the top of the annular space 28.
- the invention applies to steam generators of different structures and in particular to steam generators in which the introduction of drinking water takes place directly in the annular space 28, near the tube plate 12.
- Drainage pipes 32 substantially vertical are connected by their lower end to the upper part of the inner casing 26, which covers the bundle of tubes 24.
- the upper end of these drain pipes 32 is welded to a horizontal plate 34 whose peripheral edge is supported by the outer casing 10 of the steam generator.
- Centrifugal or cyclone separators (not shown) are housed in each of the discharge pipes 32, in order to trap part of the water entrained by the steam, in order to recycle it towards the bottom part of the steam generator.
- These centrifugal or cyclone separators are usually constituted by fixed fins, in the form of propellers, housed in the evacuation pipes 32.
- the steam which reaches the upper part of the outer casing 10 through the discharge pipes 32 then passes through driers 36 placed at a certain distance above the horizontal plate 34, before leaving the steam generator by a secondary steam extraction pipe 38, disposed at the top of the outer casing 10, along the vertical axis of the steam generator.
- the dryers 36 which can have various shapes, constitute a set of baffles which the steam must pass through before leaving the steam generator. These baffles help dry out the vapor by recycling part of the water entrained by the latter.
- the recycling water thus recovered is brought back to the lower part of the steam generator by at least one substantially vertical pipe 40, which crosses the horizontal plate 34 and the lower end of which is situated at the above the upper part of the inner envelope 26 covering the bundle of tubes 24.
- means 48 are provided above the horizontal plate 34 for trapping migrant bodies coming from the dryers 36.
- the means 48 for trapping migrant bodies have the main function of retaining objects accidentally falling from the dryers 36, in order to prevent these objects from being able to become trapped between the tubes 24 after passing through the evacuation pipes 32.
- the objects which may fall out of the dryers 36 may be either objects inadvertently remaining in the dryers following the installation of the steam generator or subsequent intervention work, or objects accidentally detaching from the dryers in operation, such as screws .
- the trapping means also retain objects that risk accidentally falling during intervention in the upper part of the steam generator.
- the means 48 for trapping migrant bodies can also have the function of forming, in the upper part of the steam generator, a work floor facilitating interventions both during assembly work of the steam generator and during maintenance operations.
- the means 48 for trapping migrant bodies can also contribute to improving the efficiency of the dryers 36, by interrupting the rotating movements of the steam at the outlet of the cyclone separators housed in the evacuation pipes 32.
- the means 48 for trapping migrant bodies occupy substantially the entire horizontal section of the steam generator, above the horizontal plate 34. Since the migrant bodies cannot descend towards the tubes 24 of the bundle that, through the evacuation conduits 32, the means for trapping migrant bodies may also have a smaller cross-section, and, for example, be formed by separate assemblies placed at the top of each of the conduits d 'Evacuation 32. It is understood, however, that the means 48 for trapping migrant bodies can only constitute an effective working floor if they occupy the major part of the section of the steam generator as illustrated in FIG. 1.
- the means 48 can effectively fulfill their function of trapping migrant bodies, they are advantageously in the form of a grid, the structure of which opposes as weakly as possible the escape of the steam towards the pipe 38 while guaranteeing the retention of objects whose size implies a risk of jamming between the tubes 24 of the bundle, if they reached the zone 30 inside the envelope 26.
- this result is obtained by giving the meshes defined by the grid forming the means 48 for trapping migrant bodies a maximum dimension less than the minimum distance separating the tubes 24 from the beam.
- the means 48 for trapping migrant bodies are advantageously formed by the juxtaposition of several trapping elements such as the element 50 in FIG. 2.
- Each element 50 is then in the form of a slab, for example square, which rests on the horizontal plate 34 by means of beams 52.
- These beams 52 bear at their ends on the outer casing 10 of the steam generator, in order to give the structure a sufficiently rigid character so that it constitutes a floor capable of supporting one or more people during assembly work or maintenance interventions.
- Each of the trapping elements 50 is advantageously fixed to the beams 52 in a removable manner, for example using screws or studs 54 preferably made captive.
- each trapping element 50 is formed of a support structure 56 forming a floor and a trapping grid 58 resting on the support structure 56.
- the support structure 56 consists of a frame in which is fixed a large mesh grid giving the structure 56 sufficient mechanical rigidity so that it can support the intervention personnel.
- the trapping grid 58 ensures the trapping function of the migrant bodies. It has for this purpose a mesh defining passages whose maximum dimension is less than the minimum distance separating the tubes 24 from the beam. In the embodiment illustrated in FIG. 2, the grid 58 has in itself insufficient mechanical characteristics to support the personnel called upon to intervene in the steam generator.
- the trapping elements 50 are fixed edge to edge to form a paving as shown schematically in FIG. 2.
- one or more trapping elements 50 can be placed above each of the evacuation pipes 32.
- the means 48 for trapping migrant bodies can also be made in one piece over all or part of the section of the steam generator.
- they can have any shape.
- the structure ensuring the trapping of migrant bodies can also have sufficient mechanical rigidity to avoid the addition of a supporting structure.
- the shape of the passages and the structure which delimits them is not limited to a grid but covers all the forms and structures making it possible to define passages of limited dimensions (circular, triangular, polygonal passages, etc., structures obtained by assembling plates, rods, etc. or by machining a solid part, etc. .).
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- High Energy & Nuclear Physics (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9306372A FR2705759B1 (fr) | 1993-05-27 | 1993-05-27 | Générateur de vapeur équipé d'un dispositif de piégeage de corps migrants. |
FR9306372 | 1993-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0626536A1 true EP0626536A1 (de) | 1994-11-30 |
EP0626536B1 EP0626536B1 (de) | 1997-08-27 |
Family
ID=9447512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94401140A Expired - Lifetime EP0626536B1 (de) | 1993-05-27 | 1994-05-24 | Dampferzeuger ausgerüstet mit einem Fremdpartikelfilter |
Country Status (6)
Country | Link |
---|---|
US (1) | US5566647A (de) |
EP (1) | EP0626536B1 (de) |
KR (1) | KR100318170B1 (de) |
CN (1) | CN1071878C (de) |
ES (1) | ES2108392T3 (de) |
FR (1) | FR2705759B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1985917A2 (de) * | 2006-11-28 | 2008-10-29 | Westinghouse Electric Company LLC | Sammelwehr für lose Teile eines Dampferzeugers |
CN104014202A (zh) * | 2014-05-15 | 2014-09-03 | 华东理工大学 | 压水堆核电站蒸汽发生器中组合汽-液分离方法及装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778222B1 (fr) | 1998-05-04 | 2000-07-21 | Framatome Sa | Dispositif de filtration et d'arret de corps etrangers vehicules par l'eau d'alimentation d'un generateur de vapeur |
DE10218313B4 (de) * | 2002-04-24 | 2018-02-15 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Digitale Laufbildkamera |
FR2851031B1 (fr) * | 2003-02-12 | 2005-05-06 | Framatome Anp | Generateur de vapeur comportant un dispositif de fourniture d'eau d'alimentation realisant le piegeage de corps etrangers |
SG178083A1 (en) | 2009-07-23 | 2012-03-29 | Tristano Pty Ltd | Multilayer film |
KR101194748B1 (ko) | 2011-06-24 | 2012-10-25 | 강림중공업 주식회사 | 폐열보일러의 배기가스 배출용 원형댐퍼 장치 |
CN112833381B (zh) * | 2020-12-25 | 2022-05-20 | 华电电力科学研究院有限公司 | 一种蒸汽吹管集粒器及其使用方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906905A (en) * | 1974-08-20 | 1975-09-23 | Commissariat Energie Atomique | Steam generator |
FR2275731A1 (fr) * | 1974-06-21 | 1976-01-16 | Westinghouse Electric Corp | Generateur de vapeur comprenant un separateur d'humidite |
EP0183049A1 (de) * | 1984-11-15 | 1986-06-04 | Westinghouse Electric Corporation | Strömungsverteilerlochplatte |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3507099A (en) * | 1966-10-25 | 1970-04-21 | Combustion Eng | Centrifugal liquid-vapor separator |
US3503440A (en) * | 1968-12-23 | 1970-03-31 | Combustion Eng | Formed plate tube support |
US3735569A (en) * | 1971-09-07 | 1973-05-29 | Combustion Eng | Water-steam separator |
US4318368A (en) * | 1980-12-29 | 1982-03-09 | Combustion Engineering, Inc. | Orificing of steam separators for uniform flow distribution in riser area of steam generators |
FR2507742A1 (fr) * | 1981-06-16 | 1982-12-17 | Commissariat Energie Atomique | Generateur de vapeur muni d'un dispositif de purge dynamique |
US4554889A (en) * | 1984-06-22 | 1985-11-26 | Westinghouse Electric Corp. | Hybrid preheat/recirculating steam generator |
FR2616883B1 (fr) * | 1987-06-18 | 1990-03-30 | Framatome Sa | Bac d'epuration d'eau de generateur de vapeur |
-
1993
- 1993-05-27 FR FR9306372A patent/FR2705759B1/fr not_active Expired - Lifetime
-
1994
- 1994-05-18 US US08/245,669 patent/US5566647A/en not_active Expired - Lifetime
- 1994-05-24 EP EP94401140A patent/EP0626536B1/de not_active Expired - Lifetime
- 1994-05-24 ES ES94401140T patent/ES2108392T3/es not_active Expired - Lifetime
- 1994-05-26 KR KR1019940011502A patent/KR100318170B1/ko not_active IP Right Cessation
- 1994-05-26 CN CN94105936A patent/CN1071878C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2275731A1 (fr) * | 1974-06-21 | 1976-01-16 | Westinghouse Electric Corp | Generateur de vapeur comprenant un separateur d'humidite |
US3906905A (en) * | 1974-08-20 | 1975-09-23 | Commissariat Energie Atomique | Steam generator |
EP0183049A1 (de) * | 1984-11-15 | 1986-06-04 | Westinghouse Electric Corporation | Strömungsverteilerlochplatte |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1985917A2 (de) * | 2006-11-28 | 2008-10-29 | Westinghouse Electric Company LLC | Sammelwehr für lose Teile eines Dampferzeugers |
EP1985917A3 (de) * | 2006-11-28 | 2009-03-11 | Westinghouse Electric Company LLC | Sammelwehr für lose Teile eines Dampferzeugers |
CN104014202A (zh) * | 2014-05-15 | 2014-09-03 | 华东理工大学 | 压水堆核电站蒸汽发生器中组合汽-液分离方法及装置 |
CN104014202B (zh) * | 2014-05-15 | 2016-02-03 | 华东理工大学 | 压水堆核电站蒸汽发生器中组合汽-液分离方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1097855A (zh) | 1995-01-25 |
FR2705759B1 (fr) | 1995-07-07 |
ES2108392T3 (es) | 1997-12-16 |
CN1071878C (zh) | 2001-09-26 |
KR950033240A (ko) | 1995-12-22 |
US5566647A (en) | 1996-10-22 |
EP0626536B1 (de) | 1997-08-27 |
KR100318170B1 (ko) | 2002-05-13 |
FR2705759A1 (fr) | 1994-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0626536B1 (de) | Dampferzeuger ausgerüstet mit einem Fremdpartikelfilter | |
FR2488033A1 (fr) | Dispositif de protection des mecanismes de commande des grappes de controle pendant les essais d'un reacteur nucleaire | |
FR2462655A1 (fr) | Distributeur collecteur de boues pour generateur nucleaire de vapeur | |
EP0634607B1 (de) | Dampferzeuger mit abnehmbarem Zyklonabscheidersystem | |
EP0005494B1 (de) | Vertikal-Abscheider eines Gemisches von Dampf oder Gas mit flüssigen oder festen Teilchen | |
EP0545800B1 (de) | Fremdpartikelfilter im Sekundärkreislauf eines Dampferzeugers | |
EP0566477B1 (de) | Dampferzeuger mit einer Wasserablenkungvorrichtung und einer Schlammentleerungsbahn | |
EP0607071B1 (de) | Wärmetauscher mit oben durch einen Überlauf gespeistes Sekundärfluid | |
EP0544579B1 (de) | Wärmetauscher mit U-Rohren und Anti-Auftriebshalterung | |
FR2561367A1 (fr) | Echangeur de chaleur equipe de moyens de refroidissement de secours et reacteur nucleaire a neutrons rapides comportant un tel echangeur | |
EP0557173A1 (de) | Dampferzeuger mit Speisewasserzuführungsleitung im niedrigen Teil | |
EP0010261B2 (de) | Vertikaler Wasserdampf-Abscheider-Überhitzer | |
FR2486201A1 (fr) | Ensemble de sechage pour generateur de vapeur, destine notamment aux generateurs de vapeur de reacteurs nucleaires | |
FR2924486A1 (fr) | Systeme double collecteur de boue et de corps etrangers pour generateur de vapeur | |
EP0568434A1 (de) | Vorrichtung zur Abgabe und Verteilung von Speise- und Rezirkulationswasser in der Sekundärseite eines Dampferzeugers | |
FR2687457A1 (fr) | Generateur de vapeur dont l'alimentation en eau secondaire est faite en partie basse. | |
FR2688296A1 (fr) | Generateur de vapeur dont l'alimentation en eau secondaire est faite en partie basse. | |
FR2471550A1 (fr) | Generateur de vapeur d'eau, particulierement pour centrales nucleaires, permettant un remplacement plus facile des pieces | |
WO2009000994A2 (fr) | Procede de demantelement pour la reutilisation des elements de l'enveloppe de pression d'un generateur de vapeur usage d'une centrale nucleaire | |
EP0122190B1 (de) | Dampferzeuger für einen mit flüssigem Metall gekühlten Reaktor | |
FR2532404A1 (fr) | Fond de chambre de combustion pour chaudiere a couche tourbillonnante | |
FR2692965A1 (fr) | Générateur de vapeur équipé d'un dispositif de purge de la face secondaire de la plaque à tubes. | |
EP0159232A1 (de) | Dampferzeuger insbesondere für Druckwasserkernreaktor | |
FR2778222A1 (fr) | Dispositif de filtration et d'arret de corps etrangers vehicules par l'eau d'alimentation d'un generateur de vapeur | |
EP0210899A1 (de) | Entfernbare Abdeckplatte für eine Öffnung, die nur über einen engen Zugang zugänglich ist |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH ES GB IT LI SE |
|
17P | Request for examination filed |
Effective date: 19950505 |
|
17Q | First examination report despatched |
Effective date: 19960718 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH ES GB IT LI SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19970827 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970827 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2108392 Country of ref document: ES Kind code of ref document: T3 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19970827 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980531 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
BECN | Be: change of holder's name |
Owner name: AREVA N.P. Effective date: 20090203 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20110527 Year of fee payment: 18 Ref country code: ES Payment date: 20110526 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20110530 Year of fee payment: 18 |
|
BERE | Be: lapsed |
Owner name: AREVA N.P. Effective date: 20120531 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120525 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120531 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20130820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120525 |