UTILITY FLOW DIAGRAMS and P&ID
The Utility Flow Diagram shall be prepared as separate drawing titledas "Utilities Flow Diagram". The distribution of utilities for plant operation shall be shown on the drawing. The utilities for plant operation are generally classified as follows where applicable: - Boiler Section; - Condensate Recovery; - Boiler Feed Water; - Cooling Water; - Raw Water; - Plant and Potable Water; - Fuel Tank; - Dry and Plant Air; - Nitrogen; - Inert Gas; - Hot Oil & Cold Oil System; - Flare and Blow-down; Utility Flow Diagrams shall be presented in accordance with the requirements stipulated in Standard P&IDs where applicable. Utility Flow Diagrams shall show main distribution/collection headers and finger headers with their isolating facilities and instrumentation. The branch line and subheader arrangement shall be shown as practical as possible. Indication criteria of connection between P&IDs and UFDs is according to the following general philosophy: ...