GB/T 37157-2018 in English

This standard provides guidelines for evaluating the fault masking of series-connected contactless interlocking devices in machinery. It outlines the requirements and methods for assessing the performance and reliability of such devices under various fault conditions. The document is applicable to the design, testing, and verification of interlocking systems that are used to ensure the safe operation of machinery. It covers aspects such as the identification of potential failure modes, the assessment of the effectiveness of fault masking mechanisms, and the determination of the overall safety integrity level of the system. The standard is intended to be used by manufacturers, designers, and users of machinery to ensure that interlocking devices meet the necessary safety requirements. It includes definitions, general principles, and specific procedures for conducting evaluations and tests.