1. Anon 1977. Specification for graphical symbols for general engineering. Piping systems and plant. BS 1553-1:1977 BSI Standards.
2. Anon 1988. Engineering diagram drawing practice. Recommendations for general principles. BS 5070-1:1988 BSI Standards.
3. Anon 1999. Symbolic representation for process measurement control functions. BS 1646 BSI Standards.
4. ISO, 2001. BS EN ISO 10628:2001. Flow diagrams for process plants—General rules. BSI Standards.
5. Plant Design. How Much?;Kauders,2014