Application software kernels

Application software kernels are predefined software packages which are adapted to the requirements of the company by configuration/parameteriza-tion (e.g., LIMS [Laboratory Information Management Systems], MRP [Materials Management System], PLC Programmable Logic Controller]). Only reliable application software kernels should be selected. 

The kernel part of these documents consists of IEEE Software Engineering Standards. IEEE standards are written for general application purpose therefore, they tend to be very comprehensive and generic. The total number of pages of QA related standards exceeds 2,000. One can easily imagine what a huge load it will be on those people who have to prepare documents and those who have to review the documents. On the other hand, it should not be too difficult to find unnecessary conservatism for a specific case from these general-purpose documents. 

Software for the PLC in safety applications is characterized by its size, application-specific language, limited variability, and use of kernel. Since kernels are fixed programs this could be made rigorous, and because of its many uses it could also be made economical. 

---