GB1367184A - Method of inserting nuclear fuel rods in grid assembly - Google Patents

Method of inserting nuclear fuel rods in grid assembly

Info

Publication number
GB1367184A
GB1367184A GB3785372A GB3785372A GB1367184A GB 1367184 A GB1367184 A GB 1367184A GB 3785372 A GB3785372 A GB 3785372A GB 3785372 A GB3785372 A GB 3785372A GB 1367184 A GB1367184 A GB 1367184A
Authority
GB
United Kingdom
Prior art keywords
rods
coating
humid atmosphere
fuel rods
fuel
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
Application number
GB3785372A
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.)
Atlantic Richfield Co
Original Assignee
Atlantic Richfield Co
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 Atlantic Richfield Co filed Critical Atlantic Richfield Co
Priority to GB3785372A priority Critical patent/GB1367184A/en
Publication of GB1367184A publication Critical patent/GB1367184A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/334—Assembling, maintenance or repair of the bundles
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1367184 Fuel elements ATLANTIC RICHFIELD CO 14 Aug 1972 37853/72 Heading G6C Metal alloy clad nuclear fuel rods are inserted into a spacer grid assembly by first forming a lubricant hoarfrost-like coating on the rod so as to avoid scratching the rods. Scratches can act as stress concentration areas, significantly reducing the fatigue life of a fuel rod subjected to cyclic loading. Examples of cladding material are zirconium alloy and stainless steel. In the zirconium alloy case, a protective oxide coating is usually formed on the cladding and removal of parts of this coating by scratching can result in excessive corrosion of the cladding. Even stainless steel clad fuel rods corrode more readily if scratched. The coating is a semi-porous dry frost resembling hoarfrost and is preferably formed by cooling the fuel rods to below 0‹ C. in a humid atmosphere. Alternatively the rods can be cooled to below 0‹ C., preferably within the range -35 to -45‹C. away from the humid atmosphere and then allowed to warm to between -10 and 4‹ C., preferably -4 to 4‹C., in the humid atmosphere. The rods may be cooled by being held on a rack above dry ice, usually from 1 to 3 minutes being adequate time. The humid atmosphere is preferably air with a relative humidity of 30 to 70% at 25 ‹C.
GB3785372A 1972-08-14 1972-08-14 Method of inserting nuclear fuel rods in grid assembly Expired GB1367184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3785372A GB1367184A (en) 1972-08-14 1972-08-14 Method of inserting nuclear fuel rods in grid assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3785372A GB1367184A (en) 1972-08-14 1972-08-14 Method of inserting nuclear fuel rods in grid assembly

Publications (1)

Publication Number Publication Date
GB1367184A true GB1367184A (en) 1974-09-18

Family

ID=10399482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3785372A Expired GB1367184A (en) 1972-08-14 1972-08-14 Method of inserting nuclear fuel rods in grid assembly

Country Status (1)

Country Link
GB (1) GB1367184A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411861A (en) * 1977-08-19 1983-10-25 Kraftwerk Union Aktiengesellschaft Method for protecting the casing tubes of nuclear reactor fuel rods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411861A (en) * 1977-08-19 1983-10-25 Kraftwerk Union Aktiengesellschaft Method for protecting the casing tubes of nuclear reactor fuel rods

Similar Documents

Publication Publication Date Title
Yao et al. Climate variation since the last interglaciation recorded in the Guliya ice core
Plass Effect of carbon dioxide variations on climate
GB1367184A (en) Method of inserting nuclear fuel rods in grid assembly
US3757403A (en) Method of inserting nuclear fuel rods in grid assembly
Bartzokas Relationship between the metereological conditions and the air-borne fungal flora of the Athens metropolitan area
Dansgaard Greenland ice core studies
Katz et al. Industrial morale and public opinion methods.
Drinkwater et al. Overview of environmental conditions in the Northwest Atlantic in 1996
Morgenstern The time moment in value theory
Zunckel et al. Characteristics of the nocturnal boundary layer: Okaukuejo, Namibia, during SAFARI‐92
Nelson The effects of hot water exposure on the strength and stiffness of douglas-fir and redwood
Shams El Din et al. A thermometric study of the dissolution of some Cu sbnd Zn alloys in acid solutions
Grinberg et al. Protection of Cold Rolled Strip Against Corrosion During Its Manufacture, Storage and Transportation
Shapovalov et al. An Investigation of the Processes of Pickling and Passivation in a Non-Contact Electrochemical Pickling Bath
DE2241149A1 (en) Nuclear fuel rods insertion - including coating rods with hoarfrost prior to insertion in grid
FIGUEIREDO et al. Cave Bacelinho, Alvaiázere–from Santos Rocha to the New Investigations: the conservation of archaeological iron artefacts
Oliveira et al. The Dislocation Substructure and Its Dependence on the Stages of Deformation of AISI Type 304 Stainless Steel at High Temperatures
Vishnayakov An Analytical Estimation of the Amount of Gases in the Closed Shrinkage Pipe of a Steel Ingot
ES8703027A1 (en) Method for searching an association matrix.
Ehrenreich et al. The effects of boiling on the quenched steel structure of martensite
TAKAMURA et al. Stability of Rust Layers Formed on Corrosion Resistant Low Alloy Steels
Peters WEGARS (ed.)," Hidden Heritage: Historical Archaeology of the Overseas Chinese"(Book Review)
Kemsley The influence of the water vapour content and the temperature of an air environment on the fatigue behavior of SAE 4340 steel
Matsushita Accelerated Atmospheric Corrosion Test of Aluminum Anodized Surface
SU991980A1 (en) Method of storage of tea leaves

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee