公开(公告)号：US5070589A

公开(公告)日：1991-12-10

申请号：US608061

申请日：1990-10-31

Applicant: David A. Howell ,  Jeffrey E. Hydeman ,  Jeffrey L. Slater ,  Richard J. Bodnar ,  Leonard R. Golick ,  Robert S. Sekera ,  Charles H. Roth, Jr.

Inventor： David A. Howell ,  Jeffrey E. Hydeman ,  Jeffrey L. Slater ,  Richard J. Bodnar ,  Leonard R. Golick ,  Robert S. Sekera ,  Charles H. Roth, Jr.

IPC: B23P19/04 ,  B23P19/06 ,  G21C19/02

CPC classification number: G21C19/02 ,  B23P19/04 ,  B23P19/06 ,  G21C19/207 ,  Y10T29/49822 ,  Y10T29/49895 ,  Y10T29/531 ,  Y10T29/5383

Abstract: Process and apparatus are disclosed for removing and replacing the hold down beams of fluid circulating jet pumps mounted in a nuclear reactor. The disclosed process and apparatus are operable from a position such as the refueling bridge remote from the reactor and while the refueling cavity surrounding the reactor is flooded with moderator fluid.

Abstract translation: 公开了用于移除和替换安装在核反应堆中的流体循环喷射泵的压紧梁的方法和装置。 所公开的方法和装置可以从远离反应堆的加油桥和位于反应器周围的加油腔充满调节剂流体的位置操作。

公开(公告)号：US4756067A

公开(公告)日：1988-07-12

申请号：US891016

申请日：1986-07-31

Applicant: David A. Howell ,  Arthur W. Kramer ,  Joseph J. Hahn

Inventor： David A. Howell ,  Arthur W. Kramer ,  Joseph J. Hahn

IPC: G21C5/02 ,  G21C7/08 ,  G21C19/33 ,  G21C19/00

CPC classification number: G21C7/08 ,  G21C5/02 ,  G21Y2002/302 ,  G21Y2004/40 ,  G21Y2004/501 ,  G21Y2004/502 ,  Y02E30/39 ,  Y10T29/4973 ,  Y10T29/49821 ,  Y10T29/5108 ,  Y10T29/531

Abstract: 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.

Abstract translation: 更换站包括一个旧的拆卸销组件（OSPA）拆卸支架和一个新的分针销组件（NSPA）安装支架。 拆卸台包括锯和钻。 使用OSPA固定在拆卸支架上的导向管，锯将每个OSPA切割到法兰下方，该凸缘接合下部导管（LGT）中的下沉孔的底部，将OSPA分成销片段和第二片段 包括法兰和分接销的其余部分，螺母拧入其中。 第二个片段在锯切操作后仍然固定在LGT上。 引导管旋转，使得钻头与第二片段的销的柄同轴。 第二片段被分成包括凸缘的第三片段和包括销的剩余部分和螺母的第四片段，两者都可以从LGT移除。 安装支架具有NSPA刀片，其中安装了新的分离销。 LGT无人机OSPA位于安装支架上。 新的螺母通过一个长柄转轮和扭矩工具安装和扭转到分开的销中，允许测量的扭矩施加到新的螺母上。 然后，螺母上的杯子被长柄压接组件卷曲，该组合件具有固定的压接爪，其通过平行于杯的壁移动而产生卷边。