我厂装有四台这种塑号的机组J一编号组型号造厂编号产日期一NZ弓一3弓一1型{__了_31一25一7型972年9月{4}」』8年8月22{31‘卫;鱼遇月__}.少1气1月_电机制投一、第10压力级叶片事故概况2号机:1·1969年10月带负荷冲洗后发现断一片。, 2.1970年3月大修发现断2片,打伤盯片。机内疏水系统按制造厂第一次提出的意见作了改进。3 I plant equipped with four such plastic number of the unit J a number of the group model factory number date of production a NZ a bow a bow a type 1 {__ _31 a 25-7 type September 972 {4} 8 August 22 {31 ’Wei; fish met month __}. Less 1 gas January _ electric machinery investment, the first 10-pressure level blade accident profile 2: 1 October 1969 with a load after washing Found broken. , 2. March 1970 overhaul found broken 2, wounded stare film. Machine drainage system according to the factory made the first suggestion made improvements. 3