天津石化公司涤纶厂缩聚釜钴源换源工作顺利完成

• 作 者: 张宗雁
• 机 构: 天津石化职业病防治所 300270
• 出 处: 职业与健康
• 发表日期: 1996年05期
• 关键词: 天津石化公司 料位计 剂量笔 设备管道 倒罐 放射工作 铅眼镜 铅手套 防护服装 天津市公安局

天津石化公司涤纶厂连续缩聚(CP)车间,作为测量缩聚釜液位的料位计所用的钴源已过了两个半衰期,剂量已不符合要求,因此决定今年更换新源。 更换新源存在着一定的危险性,主要是新旧源在倒罐时处于暴露状态,换源主操人员在0.3～0.5米以内直接暴露于颗源的照射下,特别是1000毫居里的新源、在颗露情况下照射两秒钟人体所受照射的剂量就要超过一周的安全累积量,再加上现场的设备管道密布,工作环境恶劣,也给换源工作增加一定困难。因此,

Tianjin Petrochemical Company polyester plant continuous polycondensation (CP) workshop, as the polycondensate reactor liquid level gauge used in the cobalt source has passed two half-lives, the dose has not met the requirements, it decided to replace the new source this year. Replacement of the new source there is a certain risk, mainly new and old sources in the inverted state is exposed, the main source of staff in the 0.3 to 0.5 meters directly exposed to the source of exposure, especially the new 1000 mill Curie Source, exposing the exposed case of two seconds exposure to the human dose will be more than a week’s cumulative safety, coupled with on-site equipment and pipelines, poor working conditions, but also to the source of work to increase certain difficulties. therefore,