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Применить Всего найдено 7. Отображено 7.
19-11-2009 дата публикации

METHOD AND TOOLING FOR DISMANTLING, CASKING AND REMOVAL OF NUCLEAR REACTOR CORE STRUCTURES

Номер: US20090285345A1
Автор: Leonard J. Balog, Thomas A. Hackley, Arthur W. Kramer
Принадлежит: Westinghouse Electric Company, LLC

A method is provided for removing radioactive internals structural members in the core of a reactor pressure vessel in a containment vessel. The method includes placing a first cask in a first internals assembly, detaching radioactive first internals structural members from second internals structural members of the first internals assembly, placing the detached first internals structural members in the first cask, placing the first internals assembly in a second cask, and removing the second cask containing the first internals assembly and containing the casked detached radioactive first internals members from the containment vessel. The first internal members may be radioactive baffle plates, and the second internals members may be former plates bolted to the radioactive baffle plates. Novel tooling, framework and fixtures facilitate disassembling, moving and storing the radioactive baffle plates.

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Номер записи: 1
23-02-2010 дата публикации

Method and tooling for dismantling, casking and removal of nuclear reactor core structures

Номер: US0007668281B2
Автор: Leonard J. Balog, Thomas A. Hackley, Arthur W. Kramer, BALOG LEONARD J, HACKLEY THOMAS A, KRAMER ARTHUR W, BALOG LEONARD J., HACKLEY THOMAS A., KRAMER ARTHUR W.
Принадлежит: Westinghouse Electric Co LLC, WESTINGHOUSE ELECTRIC CO LLC

A method is provided for removing radioactive internals structural members in the core of a reactor pressure vessel in a containment vessel. The method includes placing a first cask in a first internals assembly, detaching radioactive first internals structural members from second internals structural members in the first internals assembly, placing the detached first internals structural members in the first cask, placing the first internals assembly in a second cask, and removing the second cask containing the first internals assembly and containing the casked detached radioactive first internals members from the containment vessel. The first internal members may be radioactive baffle plates, and the second internals members may be former plates bolted to the radioactive baffle plates. Novel tooling, framework and fixtures facilitate disassembling, moving and storing the radioactive baffle plates.

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Номер записи: 2
31-03-1998 дата публикации

下部炉内構造物アセンブリの交換方法及び炉心槽の位置整列装置

Номер: JPH1082885A
Автор: Arthur W Kramer, Bruce W Bevilacqua, G Sharwood Donald, Leonard J Balog, Ronald J Hopkins, アーサー・ダブリュ・クラマー, ドナルド・ジー・シャーウッド, ブルース・ダブリュ・ベヴィラクア, レナード・ジェイ・バロッグ, ロナルド・ジェイ・ホプキンス
Принадлежит: Westinghouse Electric Corp

(57)【要約】 【課題】 比較的短時間で且つ作業員の放射線被曝を最 小限度に留どめて原子炉容器内の現存の下部炉内構造物 を新しい下部炉内構造物と置換するための装置及び方法 を提供する。 【解決手段】 圧力容器１及び現存の上部炉内構造物に 対する新しい下部炉内構造物の位置整列は、新炉心槽５ 及び現存の上部炉心板８に設けられるゲージによって得 られる整列測定に基づき現場で新しい下部炉内構造物を 個別適合化することにより達成される。上記ゲージによ り、新しい炉心槽の下側部分における半径方向支持キー ３２の個別適合化研削並びに新しい炉心槽における上部 炉心板アラインメントピン孔の個別適合穿孔が可能にな る。

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Номер записи: 3
11-03-1980 дата публикации

Apparatus for cutting through a tube bundle

Номер: US4192067A
Автор: Arthur W. Kramer, Frank I. Bauer, Gregory L. Calhoun, William A. Bencloski
Принадлежит: Westinghouse Electric Corp

Cutting apparatus having spaced apart cutters which can be brought closer together are disposed on one end of a boom which is movable in a plane transverse to the longitudinal axis of a closely packed tube bundle to cut out short segments from the tubes starting at the periphery and working through the tube bundle by bringing the cutters closer together to provide clearance as the cutters move deeper into the tube bundle.

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Номер записи: 4
26-01-1999 дата публикации

Apparatus and method for replacing internal components in a nuclear reactor

Номер: US5864594A
Автор: Arthur W. Kramer, Bruce W. Bevilacqua, Donald G. Sherwood, Leonard J. Balog, Ronald J. Hopkins
Принадлежит: Westinghouse Electric Corp

An apparatus and method are provided for replacing the existing lower internal components in a nuclear reactor vessel with new components. The alignment of the new lower internals to the pressure vessel and the existing upper internals is achieved by customizing the new lower internals on-site based on alignment measurements obtained by gages installed on the new core barrel and the existing upper core plate. The gages allow the custom machining of radial support keys on the lower portion of the new core barrel and the custom drilling of upper core plate alignment pin holes in the new core barrel.

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Номер записи: 5
12-07-1988 дата публикации

Manual replacement of old split-pin assemblies by new split-pin assemblies

Номер: US4756067A
Автор: Arthur W. Kramer, David A. Howell, Joseph J. Hahn
Принадлежит: Westinghouse Electric Corp

A replacement station includes an old split-pin-assembly (OSPA) removal stand and a new split-pin-assembly (NSPA) installation stand. The removal stand includes a saw and a drill. With the guide tube to which the OSPA is secured in the removal stand, the saw severs each OSPA below the flange which engages the base of the lower counterbore in the lower guide tube (LGT) separating the OSPA into a pin fragment and a second fragment including the flange and the remainder of the split-pin with the nut threaded into it. The second fragment remains secured to the LGT after the sawing operation. The guide tube is rotated so that the drill is coaxial with the shank of the pin of the second fragment. The second fragment is separated into a third fragment including the flange and a fourth fragment including the remainder of the pin and the nut both removable from the LGT. The installation stand has NSPA blades in which the new split pins are mounted. The LGT sans the OSPA's is positioned on the installation stand. The new nuts are mounted and torqued into the split pins with a long-handled runner and a torque tool permitting a measured torque to be applied to the new nut. Then the cups on the nuts are crimped by a long-handled crimping assembly which has fixed crimping jaws that produce the crimping by moving parallel to the wall of the cup.

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Номер записи: 6
09-12-1980 дата публикации

Tube bundle cutting method and apparatus

Номер: US4238663A
Автор: Arthur W. Kramer, Frank Bauer, Gregory L. Calhoun
Принадлежит: Westinghouse Electric Corp

One or more pairs of vertically-spaced-apart sidewardly-aimable plasma arc cutting torches, the upper one angled upward and the bottom one downward, on the end of a horizontal boom movable longitudinally fore and aft and angularly sideward, are used to double-cut the tube bundle of a steam generator progressively in a manner clearing a path that accommodates torch assembly advancement.

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Номер записи: 7