
307
P
P
P&A: See Plugged and abandoned.
P&ID or PNID: Process and instrument diagram.
P&I (Shipping): Protection and indemnity insurance.
Packaged Air Conditioner: Complete air-conditioning unit including
refrigeration compressor, cooling coils, fans, lter, and automatic controls
assembled into one casing.
Packaged Boiler: Boiler shipped complete with heating equipment,
mechanical draft equipment, automatic controls, and accessories; usually
shipped in one or more major sections.
Package Treatment Plant: A small wastewater treatment plant often
fabricated at the manufacturer’s factory, hauled to the site