GB/Z 44564-2024Safety instrumented systems - Process analysis technology systems (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is equivalent to IEC TR63176:2019 "Process Analytical Technology System as Part of Safety Instrumented System". Document Type The model was adjusted from an IEC technical report to a national standardization guiding technical document for my country.

The following minimal editorial changes were made to this document.

--- In order to coordinate with the existing standards, the name of the standard is changed to "Safety Instrumented System Process Analysis Technology System";

---Added the explanation of MooN in 3.2UMooN;

--- Assign sequence numbers to the formulas in Appendix C.

Introduction

This document is intended to help users of process analyzers install and use the equipment in accordance with the requirements of the Safety Instrumented System (SIS).

The content of the document may involve binding provisions related to safety, but the overall content of the document is recommendatory. For example, process analytical technology (PAT) measurement Devices used as sensor components in SIS in process industries represent, in most cases, the only or most effective means of monitoring process variables.

The method, in itself, allows a reliable assessment of the use of the designed protection system.

PAT measuring devices are generally more susceptible to interactions with materials than the widely used sensors for pressure, temperature, fill level and flow measurement.

This interaction will result in a systematic failure that cannot be completely avoided, and regular inspections of the measuring equipment over a short period of time will This can avoid this problem.

Due to the diversity of process analysis measurement variables and methods, and the limitations of signal and accuracy in each case, the applied PAT measurement The number of devices to be measured is relatively limited, so it is difficult to quantitatively evaluate functional safety according to IEC 61511 (all parts) in most cases.

In addition to the lack of performance evaluation as a SIS component, the number of similar applications is too small. However, in the past three decades, process analyzers have The company has successfully applied hundreds of PAT measurement devices to SIS.

In areas where regulatory requirements cannot be met or where only partial measures are proposed, these measures can only achieve an equivalent level of safety when applied with caution.

Requirements related to the functional safety of electrical and electronic systems are described in IEC 61508 (all parts) and IEC 61511 (all parts).

This document describes the procedural guidelines for PAT measurement equipment as part of a SIS.

1 Scope

This document gives all the necessary steps for safety equipment certification and is supplemented by special requirements for PAT measuring equipment. Safety management of SIS equipment.

This document is applicable to the planning, installation and operation (maintenance) of PAT measuring devices in SIS in process industries.

This document does not address the safety management of the entire SIS equipment.

The term "qualification" used in this document refers specifically to the suitability of a PAT system for testing SIS equipment, in contrast to the term used in the pharmaceutical environment. "Identification" is different.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 20438.6-2017 Functional safety of electrical/electronic/programmable electronic safety-related systems Part 6. Application Guide for GB/T 20438.2 and GB/T 20438.3 (IEC 61508-6:2010, IDT)

GB/T 21109.1-2022 Functional safety of safety instrumented systems in process industries Part 1: Framework, definitions, systems, hardware Software and application programming requirements (IEC 61151-1:2016, IDT)

Note: GB/T 20438 (all parts) Functional safety of electrical/electronic/programmable electronic safety-related systems [IEC 61508 (all parts)]

IEC 61511 (all parts) Functional safety - Safety instrumented systems for process industry

Note: GB/T 21109 (all parts) Functional safety of safety instrumented systems in process industries [IEC 61511 (all parts)]

3 Terms, definitions, symbols and abbreviations