The National Plant Specification NPS: The Next Generation:

Long have we heard that the digital NPS needs a complete overhaul.  So that’s what we’ve done.  Gone are incomplete, inaccurate and inconsistent sizes, forms and plant details.  Instead, the NEW NPS now allows data selection by plant class and sub-class, with improved structure and between plant class and its corresponding plant sizes.  Add in descriptive text at every step to ensure consistency and accuracy and rationalised sizes to avoid duplication and discrepancies and the NPS is cleaner, leaner and ready for BIM integration.

NPSNextGene