Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)ls 'conceptual design’. This IS all about getting the concepts right for the specific application It also means choosing the right type of equipment for the job; not the particular vendor but at least the right architecture for the logic solver system and the light arrangement of sensors and actuato Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)rs to give the quality of system required by the SRS. Here’s what we are going to do 111 this cliapter to cover the subject•Check the guidelines as pePractical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
r ISA TEC•Establish key design requirements•Examine logic solver architectures; from relays to TMR•Conunent on certificationWhat does the conceptual d5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)control valve or motor trip etc. Some typical issues to be decided at this stage include;•The decisions are made on what type of sensor system is required.•What functions. if any. requữe redundant measuring sensors? What measures are needed to avoid spurious trips?•If an instrument is prone to probl Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)ems, say an oxygen detector ill a gas line, tills is the poult where a 2 out of 3 voting (2oo3) scheme is proposed.The selection of the logic solver tPractical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
echnology is made...e g. relays or PES. The architecture of the PES has to be decided. Do we need dual redundant architectures or will a single channe5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2) stage for tire SIS but are subject to evaluation review and finally verification, before the design is ‘cast in stone’ and the detail engineering136 Practical Industrial Safety. Risk Assessment and Shutdown Systems for Industryproceeds. As usual in engineering projects if the right decisions can be Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2) made up front whilst the choices are open the rest of the job will go much better.5.2 What the standards say?5.2.1ISA conceptual design stageFigure 5Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
.1 shows us where we are in the ISA life cycle model and points US to paragraphs 4.2.7 and clause 6 of the standard where the ground rules for the con5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2) a good indication of what issues should be considered at this stage.Objectives'To define those requirements needed to develop and verify an SIS Conceptual Design that meets the Safety Requirements Specifications.'Conceptual design requirementsClause 6.2.1 requires that ‘The Safety Instrumented Syst Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)ems (SIS) architecnire for each safety function shall be selected to meet its required Safety Integrity Level (SIL), (e g. the selected arclutecture mPractical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
ay Ire one out of one loot loo2 voting, 2oo3 voting, etc.)' This is an important feature and is one that has become a significant feature of the IEC s5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2). We shall examine these in more detail in Chapter 7Clause 6.2.2 states. ‘A SIS may have a single safety function or multiple safety functions that have a common logic solver and or input and output devices. When multiple safety functions share common components, the common components shall satisfy Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)the highest SIL of the shared safety function. Components of the system that are not common must meet the SILTechnology choices and the conceptual desPractical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)
ign stage I-ifrequirements for die safety function that the}- address.' This is a fundamental rule for all safety system designsClause 6.2.3 presides 5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid call Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)ow and readers are encouraged to make reference to the ISA standard to follow up on the guidance material provided by the ISA standard in its appendix B.a)Separation identical or diverse (see B.l for guidance)b)Redundancy - identical or diverse (sec B.2 for guidance) Practical Industrial Safety, Risk Assessment and Shutdown Systems for Industry( F2)5Technology choices and the conceptual design stage5.15.1.1IntroductionThe next stage in the safety life cycle brings US to what the ISA standaid callGọi ngay
Chat zalo
Facebook