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DE1055709B - Trim rod for nuclear reactors - Google Patents

Trim rod for nuclear reactors

Info

Publication number
DE1055709B
DE1055709B DES58417A DES0058417A DE1055709B DE 1055709 B DE1055709 B DE 1055709B DE S58417 A DES58417 A DE S58417A DE S0058417 A DES0058417 A DE S0058417A DE 1055709 B DE1055709 B DE 1055709B
Authority
DE
Germany
Prior art keywords
nuclear reactors
rod
trim rod
neutron
trim
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.)
Pending
Application number
DES58417A
Other languages
German (de)
Inventor
Dr-Ing Herbert Bachl
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DES58417A priority Critical patent/DE1055709B/en
Publication of DE1055709B publication Critical patent/DE1055709B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/005—Flux flattening
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Description

Trimmstab für Kernreaktoren Bei thermischen Kernreaktoren bedient man sich zur Steuerung der Kettenreaktion unter anderem sogenannter Regelstäbe, die neutronenabsorbierende Substanzen enthalten. Je nach der Eintauchtiefe der Regelstäbe in den aktiven Kern (Gitter) vergrößern oder verkleinern sie den Neutronenfluß und, wenn. der Reaktor zur Energieerzeugung dient, damit auch die anteilige Wärmeübertragung auf das Arbeitsmittel.Trim rod for nuclear reactors Used in thermal nuclear reactors to control the chain reaction, among other things, so-called control rods, which contain neutron absorbing substances. Depending on the immersion depth of the control rods in the active nucleus (grid) they increase or decrease the neutron flux and, if. the reactor is used to generate energy, so that the proportional heat transfer on the work equipment.

Die neutronenabsorbierende Substanz ist dabei über die sogenan.nte Aktivlänge der Stäbe, das ist diejenige Länge, bis zu der die Regelstäbe im Beb arrungsbetrieb bei Nennlast in das Stabgitter eingetaucht sind und die sich auf Grund der räumlichen Neutronenflugverteilung im aktivsten Teil, d. h. dem unteren, Drittel des Gitters, ergibt, im allgemeinen gleichmäßig verteilt. Es gibt aber Fälle, in denen man zusätzlich örtlich konzentrierte Flußüberböhungen ausgleichen möchte. Gemäß der Erfindung wird vorgeschlagen, hierzu Stäbe zu verwenden, die an ihrem in den Reaktorkern eingetauchten Ende eine ausdehnungsmäßig auf die Störstelle abgestimmte Häufung neutronenabsorbierender Substanzen aufweisen. Unabhängig von der Stellung .der übrigen. Regelstäbe werden dann diese Stäbe jeweils so weit in den Reaktor eingefahren, daß sie mit ihrem vorderen Ende im Bereich der Flußverteilung liegen.The neutron-absorbing substance is via the so-called Active length of the bars, that is the length up to which the control bars in the Beb arrest operation at nominal load are immersed in the bar grille and which are on Reason for the spatial distribution of neutron flight in the most active part, d. H. the lower one Third of the lattice, results, generally evenly distributed. But there are cases in which one would also like to compensate for locally concentrated excesses of the river. According to the invention it is proposed to use this rod that is attached to her The end immersed in the reactor core has an expansion matched to the point of failure Show an accumulation of neutron-absorbing substances. Regardless of the position .the rest. Control rods are then these rods each so far into the reactor retracted that they lie with their front end in the area of the flow distribution.

Claims (1)

PATENTANSPRUCH: Trimmstab für Kernreaktoren zum Ausgleichen örtlich. konzentrierter FluMberhöhungen, dadurch gekennzeichnet, daß der Stab an dem in den. Reaktorkern eingetauchten Ende eine ausdehnungsmäßig auf die Störstelle abgestimmte Häufung neutronenabsorbierender Substanzen aufweist.PATENT CLAIM: Trim rod for nuclear reactors to compensate locally. concentrated flux elevations, characterized in that the rod on the in the. Reactor core immersed end an expansion matched to the point of failure Shows an accumulation of neutron absorbing substances.
DES58417A 1957-03-08 1957-03-08 Trim rod for nuclear reactors Pending DE1055709B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES58417A DE1055709B (en) 1957-03-08 1957-03-08 Trim rod for nuclear reactors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES58417A DE1055709B (en) 1957-03-08 1957-03-08 Trim rod for nuclear reactors

Publications (1)

Publication Number Publication Date
DE1055709B true DE1055709B (en) 1959-04-23

Family

ID=7492524

Family Applications (1)

Application Number Title Priority Date Filing Date
DES58417A Pending DE1055709B (en) 1957-03-08 1957-03-08 Trim rod for nuclear reactors

Country Status (1)

Country Link
DE (1) DE1055709B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179652B (en) * 1959-08-14 1964-10-15 Us Atomic Energy Commision Control element for nuclear reactors
DE1215829B (en) * 1960-09-29 1966-05-05 Siemens Ag Axially symmetrical heterogeneous nuclear reactor, in which the reactivity is changed by changing the braking properties of the moderator
DE1243288B (en) * 1963-12-30 1967-06-29 Combustion Eng Absorber rod for nuclear reactors
DE1247502B (en) * 1961-03-24 1967-08-17 Gen Dynamics Corp Control rod with self-shielding for a nuclear reactor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179652B (en) * 1959-08-14 1964-10-15 Us Atomic Energy Commision Control element for nuclear reactors
DE1215829B (en) * 1960-09-29 1966-05-05 Siemens Ag Axially symmetrical heterogeneous nuclear reactor, in which the reactivity is changed by changing the braking properties of the moderator
DE1247502B (en) * 1961-03-24 1967-08-17 Gen Dynamics Corp Control rod with self-shielding for a nuclear reactor
DE1243288B (en) * 1963-12-30 1967-06-29 Combustion Eng Absorber rod for nuclear reactors

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