EP0996953B1 - Verfahren zur herstellung einer beschichtung zur absorption von neutronen - Google Patents

Verfahren zur herstellung einer beschichtung zur absorption von neutronen Download PDF

Info

Publication number
EP0996953B1
EP0996953B1 EP97930391A EP97930391A EP0996953B1 EP 0996953 B1 EP0996953 B1 EP 0996953B1 EP 97930391 A EP97930391 A EP 97930391A EP 97930391 A EP97930391 A EP 97930391A EP 0996953 B1 EP0996953 B1 EP 0996953B1
Authority
EP
European Patent Office
Prior art keywords
boron
coating
dispersion bath
coated
nickel
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.)
Expired - Lifetime
Application number
EP97930391A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0996953A1 (de
Inventor
Klaus Leo Wilbuer
Hermann Hans Urlberger
Rudolf Diersch
Hermann Stelzer
Matthias Patzelt
Dieter Methling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GNS Gesellschaft fuer Nuklearservice mbH
Metallveredlung GmbH and Co KG
Original Assignee
GNS Gesellschaft fuer Nuklearservice mbH
Metallveredlung GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GNS Gesellschaft fuer Nuklearservice mbH, Metallveredlung GmbH and Co KG filed Critical GNS Gesellschaft fuer Nuklearservice mbH
Publication of EP0996953A1 publication Critical patent/EP0996953A1/de
Application granted granted Critical
Publication of EP0996953B1 publication Critical patent/EP0996953B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G21F1/08—Metals; Alloys; Cermets, i.e. sintered mixtures of ceramics and metals

Definitions

  • the invention relates to a method for producing a coating for Absorption of the nuclear reaction of radioactive materials Neutrons.
  • the invention also relates to a manufactured by the method Shielding.
  • a fuel storage rack is known in which Absorber sheets form a number of shafts that overflow the fuel elements enclose their entire length.
  • These absorber elements are around manholes or tubes made of a neutron-absorbing material, For example, boron steel, a stainless steel with a boron content of 1 to 2%.
  • boron steel a stainless steel with a boron content of 1 to 2%.
  • these are Absorber elements extremely expensive and the efficiency is due of the limited boron fraction limited.
  • the deposition of a boron-nickel alloy was checked. Of the Although boron can be increased up to 8%, it also increases the cost is about a factor of 10, so that an economical use such tubes can not come into question.
  • US Pat. No. 4,218,622 describes a composite absorber element which has a thin carrier foil or a thin carrier plate onto which a polymer matrix in which boron carbide particles have been incorporated is applied.
  • the material of the carrier film or of the carrier sheet is preferably glass fiber-reinforced polymer.
  • the boron carbide particles are uniformly distributed on the surface of the polymer matrix, with a boron concentration of up to 0.1 g / cm 2 .
  • this absorber element has a thickness of up to 7 mm, is configured in the form of a foil or sheet, and suspended between an inner wall and an outer wall.
  • EP 0 016 252 A1 discloses a process for producing a Neutron absorbing absorber element described.
  • the process is made by plasma spraying boron carbide together with a metallic Substance applied to a substrate, wherein the boron carbide in a matrix a metallic substance is involved. The procedure also takes place such that oxidation of the boron is avoided.
  • the so produced Absorber element is said to be against a liquid medium, as it for example, in a fuel pool, be stable.
  • the Thickness of the plasma sprayed metal layer and Boron carbide is at least 500 microns.
  • the proportion of boron carbide is about 50% by volume.
  • a metallic substance come aluminum, copper and stainless steel, the substrate being the same metallic substance as the sprayed layer contains.
  • the thickness of the layer is 3 to 6 mm.
  • DE-AS 1 037 302 and DE 2 361 363 disclose tubes, especially tin cans, on their outer surface on electrolytic Paths with absorber material for protection against radioactive radiation Mistake.
  • absorber material for protection against radioactive radiation Mistake.
  • EP 0 055 679 A2 discloses processes for the production of Shielding known, wherein boron carbide either in one Plasma coating process on the surface of the shielding applied, or after an electrolytic or chemical Vorvernickelung of the shielding element boron carbide as a powder on the Surface scattered and the shielding then electrolytic or chemically nickel-plated. After these procedures leave only small Boron carbide levels in the order of 20 wt .-% with respect to nickel apply to the surface. It therefore requires very strong layers, so that These prior art methods are uneconomical. In practice, were these methods are not used, since they are not procedurally can be realized in practice. Applying a powder to a surface in the Meaning of sprinkling is not a measure that is a secured industrial Production guaranteed.
  • the present invention has for its object to provide a method for producing a coating or by shielding the absorption of radioactive during nuclear reaction materials indicate neutrons created, which is economical and easy to use, increasing the efficiency of absorption, with respect to the base materials and shape of the shielding allows greater variability and in particular allows the production of lighter shielding at least the same absorption qualities.
  • a method for producing a coating for absorbing the neutrons generated in the nuclear reaction of radioactive materials, wherein at least a part of a base material consisting of a shielding element is provided at its predetermined surfaces in a boron-containing dispersion bath with a Bornickel Anlagen, wherein during the coating process, at least temporarily, a relative movement between the respective surface to be coated and the dispersion bath is generated and a dispersion bath is used with boron in its elemental form.
  • boron can be incorporated in the nickel matrix in the order of magnitude of> 20% by volume, even ⁇ 40% by volume.
  • the boron may be present as boron carbide (B 4 C) or, according to the invention, as boron in elemental form in the dispersion. By using elemental boron, much larger boron deposits can still be achieved.
  • the absorption layers are in the order of 350 to 500 ⁇ m, which is extremely thin.
  • a special advantage is independence the method of the base material.
  • inorganic base material for example steel, titanium, copper, Nickel and the like.
  • Carbon fiber material to be considered Carbon fiber material has the particular advantage of galvanotechnical manufacturability of Absorbing element.
  • the possibility of the shielding in finished state or to manufacture in individual parts Due to the independence from the base material can be very easily editable Materials are used. On the other hand, you can also be very complicated forms of shielding elements, containers, baskets and like, fully prefabricated and then according to the invention coat.
  • the base material can be prefabricated as a finished part or item, so that finished shielding elements can be formed from the individual parts.
  • the coating in the dispersion bath is either chemical or electrolytically.
  • the relative movement between the surface to be coated and the Dispersion bath for example, by a movement of the coated element in the dispersion bath.
  • Elements such as boron so that a circulation or pumping the Dispersion is not practically possible economically. Any circulation or Pumping unit would be worn in no time.
  • a directional supply of the dispersion to the surface to be coated In addition to the movement of the element itself can also be the entire Coating plant for the purpose of generating the relative movement to be moved.
  • the implementation of the coating in a kind of drum conceivable.
  • the coating surface facing upward in the dispersion bath is arranged.
  • the surface to be coated is arranged in the dispersion bath such that due to gravity fall in the dispersion particles on the surface.
  • the invention also relates to the method described manufactured shielding elements. These are characterized by the fact that they have a boron / nickel coating with a proportion of boron in Elemental form greater than 20 vol .-% or 40 vol .-%.
  • the layer thickness is 350 to 500 microns, the layer on a inorganic base material such as steel, titanium, copper or the like is trained. The training is chemically or electrolytically.
  • the shielding element can be coated in finished form or composed of individual coated parts be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemically Coating (AREA)
EP97930391A 1997-06-24 1997-06-24 Verfahren zur herstellung einer beschichtung zur absorption von neutronen Expired - Lifetime EP0996953B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1997/003309 WO1998059344A1 (de) 1997-06-24 1997-06-24 Verfahren zur herstellung einer beschichtung zur absorption von neutronen

Publications (2)

Publication Number Publication Date
EP0996953A1 EP0996953A1 (de) 2000-05-03
EP0996953B1 true EP0996953B1 (de) 2005-05-18

Family

ID=8166669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930391A Expired - Lifetime EP0996953B1 (de) 1997-06-24 1997-06-24 Verfahren zur herstellung einer beschichtung zur absorption von neutronen

Country Status (4)

Country Link
EP (1) EP0996953B1 (cs)
CZ (1) CZ291292B6 (cs)
DE (1) DE59712320D1 (cs)
WO (1) WO1998059344A1 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59902780D1 (de) 1999-06-19 2002-10-24 Gnb Gmbh Transport- und/oder Lagerbehälter für radioaktive wärmeentwickelnde Elemente
ATE362181T1 (de) * 1999-09-27 2007-06-15 Metallveredlung Gmbh & Co Kg Verfahren zur herstellung einer beschichtung zur absorption der bei der kernreaktion radioaktiver materialien entstehenden neutronen
CZ297053B6 (cs) * 1999-09-27 2006-08-16 Metallveredlung Gmbh & Co. Kg Zpusob výroby povlaku k absorpci neutronu vzniklých pri jaderné reakci radioaktivních materiálu a absorpcní element obsahující povlak zhotovený tímtozpusobem
DE102011108990A1 (de) * 2011-08-01 2013-02-07 Dieter Methling Brennelementlagergestell
US12051516B1 (en) * 2020-09-01 2024-07-30 GeoPlasma, LLC Method of manufacturing advanced composites and coatings for radiation environment shielding

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238299A (en) * 1979-08-24 1980-12-09 Kennecott Copper Corporation Tubing with copper-boron carbide composite facing and methods for its production
YU305181A (en) * 1980-12-31 1986-04-30 Farmatome Sa Method of making housings for the subaqueous storing of radiated fuel assemblies
DE19680456D2 (de) * 1995-05-16 1997-10-16 Metallveredlung Gmbh & Co Kg Verfahren zur Herstellung von Abschirmelementen zur Absorption der bei der Kernreaktion radioaktiver Materialien entstehenden Neutronen

Also Published As

Publication number Publication date
CZ453999A3 (cs) 2000-04-12
EP0996953A1 (de) 2000-05-03
WO1998059344A1 (de) 1998-12-30
DE59712320D1 (de) 2005-06-23
CZ291292B6 (cs) 2003-01-15

Similar Documents

Publication Publication Date Title
DE102012212954B4 (de) Kaltgesprühte und wärmebehandelte Beschichtung für Magnesium
DE1521493A1 (de) Verfahren zum Aufbringen einer Schutzschicht auf Metallteile
DE1521387A1 (de) Verfahren zum Flammspritzen
DE2659179A1 (de) Einschichtmetallplatte mit fasern hoher mechanischer eigenschaften und verfahren zu deren herstellung
DE1446207B2 (de) Aus mehreren bestandteilen bestehendes flammspritzmaterial
DE3205384A1 (de) Verfahren zum herstellen eines duennen films aus einem organischen material durch bedampfen
DE3880313T2 (de) RF-Plasmaverfahren zur Herstellung von mehrschichtigen verstärkten Verbundwerkstoffen.
EP0850899B1 (de) Verfahren zum Beschichten von Kohlenstoffsubstraten oder nichtmetallischen, kohlenstoffhaltigen Substraten sowie Substrat beschichtet nach dem Verfahren
DE2626941A1 (de) Bauteile aus korrosionsbestaendiger zirkoniumlegierung und verfahren zu deren herstellung
DE3242543A1 (de) Verfahren zum herstellen von schichtwerkstoff mit einer auf einer traegerschicht aufgebrachten funktionsschicht und nach diesem verfahren hergestellter schichtwerkstoff
EP0996953B1 (de) Verfahren zur herstellung einer beschichtung zur absorption von neutronen
CH635130A5 (de) Verfahren zur herstellung einer carbidschicht auf der oberflaeche eines gegenstandes aus einer eisenlegierung.
DE1521346C3 (de) Verfahren zur Herstellung eines metallischen Überzuges
EP0556455B1 (de) Abschirm-Transportbehälter für bestrahlte Kernreaktorbrennelemente und Verfahren zum Aufbringen einer Abschlussschicht auf den Abschirm-Transportbehälter
DE3601439C1 (de) Schichtverbundwerkstoff,insbesondere fuer Gleit- und Reibelemente,sowie Verfahren zu seiner Herstellung
DE3103526A1 (de) "mehrschichtiger transport- und lagerbehaelter fuer radioaktive abfaelle"
DE3147755C2 (de) Verfahren zum Beschichten eines Metalls mit einem davon verschiedenen Metall
WO1996036972A1 (de) Verfahren zur herstellung von abschirmelementen zur absorption der bei der kernreaktion radioaktiver materialien entstehenden neutronen
EP1087408B1 (de) Verfahren zur Herstellung einer Beschichtung zur Absorption der bei der Kernreaktion radioaktiver Materialien entstehenden Neutronen
WO1995030990A1 (de) Behälter zur absorption von neutronenstrahlung
EP0187928B1 (de) Oberflächenbeschichtete Bauteile von Kernenergieanlagen
CH675260A5 (cs)
DE3931047C2 (cs)
CH687529A5 (de) Bad zur Vorbehandlung von Leichtmetallen.
DE19517415A1 (de) Verfahren zur Absorption der bei der Kernreaktion radioaktiver Materialien entstehenden Neutronen

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

17P Request for examination filed

Effective date: 19990629

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20040419

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GNS GESELLSCHAFT FUER NUKLEAR-SERVICE MBH

Owner name: METALLVEREDLUNG GMBH & CO. KG

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59712320

Country of ref document: DE

Date of ref document: 20050623

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050907

ET Fr: translation filed
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

Effective date: 20060221

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20160621

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20160627

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20160830

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59712320

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20170623

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20170623