本质安全电路校核方法

Verification Method for Intrinsically Safe Circuit

根据本质安全电路计算在安全生产中的重要性及中国船级社(China Classification Society,CCS)《钢质海船入级规范》2015修改通报新增本质安全电路校核资料的送审要求,介绍本质安全电路的各组成部分及本质安全参数的基本概念,重点对只有一个关联设备的本质安全电路和含有多个关联设备的本质安全电路的校核方法进行详细阐述,推导出本质安全电路设计中允许使用电缆最大长度的计算公式,总结各类船舶上可能出现的本质安全电路类型。通过实例阐明本质安全电路校核资料中应包含的参数内容及校核结论。

In consideration of the importance of calibration for intrinsically safe circuit in the production safety and thenew requirements for the documentation to be submitted for the approval of intrinsically safe circuits according to ChinaClassification Society(CCS)RULES FOR CLASSFICATION OF SEA-GOING STEEL SHIPS 2015, this paper presentsthe components of intrinsically safe circuit and introduces the basic concept of intrinsically safe parameters; thendescribes the details of the verification method for the intrinsically safe circuit both with only one associated apparatusand with more than one associated apparatus; deduces the calculation formula of the longest length permitted for cablesand summarizes the possible intrinsically safe circuit types on different ships. Examples are given to show whatparameter contents and conclusions should be included in the intrinsically safe circuit profile.