Requisite number of utility stations shall be provided throughout the unit to cater to the utility requirement. Utility stations shall have three connections [one for LP steam (SL), one for Plant Air (AP) and one for Service Water (WS)] each of 1″NB unless otherwise specified in P&ID.
Air and water lines shall have quick type hose connection and steam line shall have flanged type hose connection and shall be directed downward. All connections shall have globe valve for isolation purpose. Inert gas hose like nitrogen, when required, shall have built in non return valve and quick coupling at pipe end.
Number of utility stations shall be such that all equipments shall be approachable from at least one utility station. The approach of utility station shall be considered 15M all around the station location.
The Utility stations shall generally be located adjacent to pipe-rack column. The utility stations shall also be provided on elevated structures like technological structure, operating platforms of vertical equipments etc. Operating platforms having manholes must be accessible from utility station. Utility stations shall be located at loading racks.