“华龙一号”管道破裂导致化学介质喷淋设备的影响分析

Analysis of the Influence of Chemical Fluid Spray Caused by Pipeline Rupture

本文结合工程需要,为保证核电厂安全功能的执行,对核电厂内含有化学介质高能流体的管道破裂后可能造成设备腐蚀的情况进行了后果影响分析。分析中遵循纵深防御的原则,并结合内部灾害的验收准则,提出化学介质喷淋设备后果的分析方法,筛选出受到喷淋的安全重要物项并逐个进行分析判断,仅对不允许失效的重要物项进行了针对性的防护设计。大大减少工程中需要增设防护措施的物项,即减少防甩件、防护支架、设备鉴定、提升设备防护等级的物项数量,在不影响电厂安全性的前提下,保证工程实施进度,提高电厂的经济性。

In order to ensure the safety function of the nuclear power plant(NPP),this paper combines the engineering with the hypothetical fracture and the analysis of the pipeline containing the chemical medium fluid in NPP.At the same time,in accordance with the principle of defense in depth and combined with the internal disaster acceptance criteria,an analytical method for chemical fluid spray caused by pipeline rupture is proposed.Through the disaster analysis,the items to be improved are reduced,which not only improves the safety,but also ensures the economics of NPP.