公开(公告)号：US5648919A

公开(公告)日：1997-07-15

申请号：US195021

申请日：1994-02-14

申请人： Kiyoshi Yamauchi ,  Takenori Shindo ,  Shigeo Hattori

发明人： Kiyoshi Yamauchi ,  Takenori Shindo ,  Shigeo Hattori

IPC分类号： G05B23/02 ,  G07C3/00 ,  G05B17/00

CPC分类号： G07C3/00 ,  G06Q10/06 ,  Y10S706/912

摘要： A system of preventive maintenance for plant component parts correlates parameters for determining the transition probability distribution of degradation phenomena, selects an arbitrary influencing factor with respect to each of various influencing factors of the degradation phenomena, selects one of the parameters for the transition probability distribution as a first function, and sets the transition probability distribution when the variables of various influencing factors are reference degree values of a reference system. The system computes a ratio between the first function and the parameter value in the reference system to give a function of the subdivided index of degradation of the influencing factor, multiplies the subdivided index of degradation of various influencing factors by a unit conversion and a coefficient for reliability.

摘要翻译： 对于植物成分部件的预防性维护系统，相关的参数用于确定退化现象的转移概率分布，选择相对于退化现象各种影响因素的任意影响因素，选择转移概率分布的参数之一为 第一功能，并且当各种影响因素的变量是参考系的参考度值时，设置转移概率分布。 系统计算参考系统中第一个函数与参数值之间的比值，给出影响因子的分解指数的函数，将各种影响因子的细分指数乘以单位转换和系数 可靠性。

公开(公告)号：US5267279A

公开(公告)日：1993-11-30

申请号：US639069

申请日：1991-01-09

申请人： Hideyo Saito ,  Koichi Kurosawa ,  Takayuki Numata ,  Shigeo Hattori ,  Takenori Shindo

发明人： Hideyo Saito ,  Koichi Kurosawa ,  Takayuki Numata ,  Shigeo Hattori ,  Takenori Shindo

IPC分类号： F16L55/18 ,  G21C13/036 ,  G21C17/10 ,  G21C19/00

CPC分类号： F16L55/18 ,  G21C13/036 ,  G21C17/10 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/40 ,  G21Y2004/50 ,  Y02E30/40

摘要： A part of an ICM housing including a portion to be repaired, welded to a wall of a reactor pressure vessel in operation, is cut and removed and a new ICM housing half is welded to the remaining part of the ICM housing to form a new ICM housing. The new ICM housing is provided at the welding portion thereof with a molten metal layer containing 4 wt % or more .delta. ferrite. A sleeve made of stainless steel is located at the welding portion of an inner peripheral surface of the new ICM housing made so as to be molten by a TIG welding machine to form the molten metal layer, with the molten metal layer preventing stress corrosion cracking of the new ICM housing.

摘要翻译： ICM外壳的一部分包括待维修的部分，焊接到操作中的反应堆压力容器的墙壁，并将新的ICM外壳半部焊接到ICM外壳的其余部分，形成新的ICM 住房。 新的ICM壳体在其焊接部分处设置有含有4重量％以上的δ铁素体的熔融金属层。 由不锈钢制成的套筒位于新的ICM壳体的内周面的焊接部分，由TIG焊机熔化，形成熔融金属层，熔融金属层防止了应力腐蚀开裂 新的ICM住房。

公开(公告)号：US5227124A

公开(公告)日：1993-07-13

申请号：US561684

申请日：1990-08-02

申请人： Hideyo Saito ,  Koichi Kurosawa ,  Takayuki Numata ,  Shigeo Hattori ,  Takenori Shindo

发明人： Hideyo Saito ,  Koichi Kurosawa ,  Takayuki Numata ,  Shigeo Hattori ,  Takenori Shindo

IPC分类号： G21C13/02

CPC分类号： G21C13/02 ,  Y02E30/40

摘要： An ICM housing welded to a wall of a reactor pressure vessel in operation is provided with a molten metal layer containing 4 wt. % or more .delta. ferrite at a portion of an inner peripheral surface thereof which corresponds to a weld. A sleeve made of stainless steel is located at the competent portion of the inner peripheral surface of the ICM housing stainless steel so as to be molten by means of a TIG welding machine to form the molten metal layer. The molten metal layer prevents stress corrosion cracking of the ICM housing.

摘要翻译： 在操作中焊接到反应堆压力容器的壁上的ICM外壳设置有含有4wt。 在其内周面的与焊接相对应的部分处的δ以上的δ铁素体。 由不锈钢制成的套筒位于ICM外壳不锈钢的内周面的主体部分，以便通过TIG焊接机熔化，形成熔融金属层。 熔融金属层防止ICM外壳的应力腐蚀开裂。