1.1 This code is applicable to the engineering design of safety instrumented system in newly-constructed, expanded and reconstructed petrochemical unit (or plant). It may also be implemented by reference for the engineering design of storage and transport system, public works, auxiliary facilitiesetc.
1.2 The engineering design of safety instrumented system must meet the safety integrity level requirements of petrochemical unit (or plant)
1.3 Relevant standards are as follows:
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
IEC 61511 Functional Safety: Safety Instrumented Systems for the Process Industry Sector
ANSI/ISA-84.01 Application of Safety Instrumented System for the Process Industries
DIN V 19250 Programmable Safety System
IEC 61131 Programmable Controller
1.4 The relevant national current mandatory standards and codes shall also be complied with during the implementation of this code.
Foreword I
1 Scope
2 Terms and Definitions
3 Basic Principle
4 Sensor
5 The Final Executive Component
6 Logic Solver
7 Communication Interface
8 Man-machine Interfaces
9 The Procedural Interface
10 Software Configuration
11 Engineering Design
Appendix A (Informative) The Compilation Outline of the Safety Instrumented System Specification
