GB/T 44988-2024 \"Requirements for Online Monitoring of Safety Instrumented Systems in Process Industries\", to come into effect on June 1, 2025

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This post was last edited by zhoudingshengs on 2025-1-7 at 12:37. GB/T 44988-2024 \"Requirements for Online Monitoring of Safety Instrumented Systems in Process Industries\" will come into effect on June 1, 2025. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Industrial Process Measurement, Control and Automation (SAC/TC124). During the operation of a Safety Instrumented System (SIS), the accuracy of the process variables is crucial for ensuring that safety functions are carried out correctly. Whether these process variables can be transmitted and processed accurately and in a timely manner depends on the status of the SIS itself (for example, whether it is malfunctioning). The high diagnostic coverage design of SIS enables the generation of a large amount of useful status information. The status information related to system inspection and maintenance is also crucial for ensuring that safety capabilities are met. Traditionally, this information is not presented in an intuitive manner to users, who are thus unable to know exactly how the safety instruments are performing – for example, whether a certain alarm is caused by a fault in an internal component, a communication issue, or some other reason – or whether the safety integrity level remains within the requirements set by the design. This is highly detrimental to safe operation, and it also makes it difficult to manage the SIS effectively. Especially for SIS in high-risk and complex applications, accurately and in real time obtaining safety-related information from field devices and taking appropriate action is key to ensuring safe operation. Therefore, it is very important to use digital and networked technologies to achieve status monitoring of SIS, which includes the device status of safety sensors, safety controllers, and safety actuators, as well as the status of the entire safety function circuit. By obtaining, analyzing, and displaying these states, the safety and availability during production operations can be improved. For example, operators can take the appropriate actions when abnormalities occur in critical SIS systems, or receive advance warnings when the safety capabilities are insufficient to meet expectations. This document specifies the requirements for online monitoring during the operation of SIS, including the monitoring of the overall status of safety instrument functions (SIFs) as well as individual devices. Effective implementation of online analysis can enhance the safety and availability during the production operation of SIS. Through the formulation of this document, implementation requirements for the standardization of the online monitoring process can also be established, including: --- definitions of security awareness data for devices/SIFs; --- transmission of security awareness data; --- analysis and presentation of security awareness data. Read and understand the relevant requirements of GB/T 44988 in conjunction with GB 21109.1-2022, GB 21109.2-2023, GB 21109.3-2007, and GB/T 50770-2013 (partial revision version 2023).