Semi-quantitative analysis of safety duties in confined space operations based on FRAM

doi:10.16265/j.cnki.issn1003-3033.2023.05.1382

Abstract

Abstract:

FRAM was introduced to build a semi-quantitative analysis model of operation security duty relation in order to solve problems such as the fuzzy boundary of security duty of operation-related personnel and the unclear interaction of multi-post and multi-link security duty in the process of performing duties. Quantifying the upstream and downstream coupling variability of the functional units clarified the influence mechanism of coupling among the functional parts of the system. The findings demonstrate that the global system variability value of safety responsibilities for 6 parties involved in confined space operations based on FRAM is 1.99×10¹⁰, and the input variability impact values for downstream functional units F5(Operators)and F6(Emergency responders)are 171.5 and 250, respectively. The coupling variation of upstream functional units has a significant impact on the system and is prone to adverse accident consequences. Combined with the functional resonance results of the analysis of 8 types of critical impact factors for confined space operations, effective barrier measures such as strengthening operational safety inputs are proposed for 2 upstream functional units and 6 failure chains.

Key words: functional resonance analysis method(FRAM), confined space operations, safety duties, semi-quantitative analysis, coupling variability

WANG Hanyu, TAN Qinwen. Semi-quantitative analysis of safety duties in confined space operations based on FRAM[J]. China Safety Science Journal, 2023, 33(5): 88-95.

Figures/Tables 12

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变异性表型	功能性能变化表征	量化得分
时间	过早	2
	准时	1
	过晚	4
	不发生	5
精度	精确	1
	可接受	3
	不精确	5

上游输出可变性	表征	输入I	资源R	前提P	时间T	控制C
时间输出可变性	过早	放大或无影响	阻尼或无影响	放大	放大	放大
	准时	阻尼	阻尼	阻尼	阻尼	阻尼
	过晚	放大	放大	放大	放大	放大
	不发生	放大	放大	放大	放大	放大
精度输出可变性	精确	阻尼	阻尼	阻尼	阻尼	阻尼
	可接受	无影响	无影响	无影响	无影响	无影响
	不精确	放大	放大	放大	放大	放大

人员群体	人员职责
作业主要负责人	建立健全有限空间作业安全生产责任制,明确有限空间作业相关负责人、作业人员、监护人员等的职责
	负责组织建立有限空间作业方案、作业安全责任制度、作业审批制度、作业现场安全管理制度、安全培训教育制度、应急管理制度、作业安全操作规程等有限空间作业安全生产制度和规程
	确保有限空间作业的生产安全投入资金供需平衡,提供符合要求的通气、检测、保护、灯光等生产安全保护设备和个人保护用具
	指导、检查本单位有限空间作业工作,严格遵守落实相关生产安全规范
	及时、有效、如实上报告有限空间作业事故
	指派具有相应资质的专人对有限空间作业的相关人员进行安全技术教育培训,培训具体内容一般包含:①有限空间存在的风险特点;②实施有限空间作业的工作程序;③测量仪表、个人防护用品等装置的合理运用情况; ④若发生事故,事故后紧急救护措施和紧急救护应对保障预案等;e.对训练具体内容应记录在册,训练完成后,还应当记录有关训练的具体内容、时间等情况
作业相关负责人	应掌握在整个作业流程中可能出现的风险影响原因并对全体人员进行安全交底
	在明确作业环境条件、作业环节、保护设施、作业人数等,在符合规定后,填写有限空间作业审批材料,办理作业审批手续授权许可作业
	确认作业人员上岗资格、身体状况符合要求
	为准确了解作业过程中可能出现的条件突变情况,在有限空间内作业条件不能满足安全条件时,可以立即叫停作业

功能参数	作业主要负责人
I	建立有限空间作业安全生产制度和规程
O	建立健全有限空间作业安全生产责任制和明确作业相关人员的职责
C	指导检查本单位有限空间作业工作
R	有限空间作业生产安全投入资金
P	具有有限空间作业相应资质
T	完成安全技术教育培训的时间

功能单元	时间表型	精度表型
F1	准时	不精确
F2	过晚	不精确
F3	过晚	不精确
F4	准时	可接受
F5	过晚	不精确
F6	过晚	不精确