Safety instrumentation systems software issues

Where loss of control could lead to severe consequences, the integrity of the basic process control system and the protective safeguards must be designed, operated and maintained to a high standard. Industry standards such as ANSI/ISA-S84.01 (1996) and IEC 61508 (2000) address the issues of how to design, operate and maintain safety instrumented systems such as high temperature interlocks to achieve the necessary level of functional safety. The scope of these standards includes hardware, software, human factors and management (HSE 2000). 

DQ checks that the design documentation matches the requirements stated in the EDS. Layout drawings, operating and maintenance procedures, parts lists and system descriptions are included in the DQ. Both hardware and software configuration are reviewed together with the supplier s product documentation. DQ offers the opportunity to monitor the progress of project validation as well as any operational and safety issues, such as the use of radioactive instruments or access to analysis equipment for maintenance. 

Implementation workspaces enable students to build or develop small, medium, and large systems including, for example, mechanical or electronic software components, or new chemical processes. Typical equipment includes hand tools and instruments, measurement and manufacturing equipment, and computers for integration of software. The range of smdent projects calls for a great deal of flexibility. Safety and accessibility are other critical issues. 

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