Answer: 1. Input from bid:- P&ID, line list, temperature, pressure. Overall plant layout and piping corridor plan. Scope of work and the specification for the job. Specifications for materials like PMS and VMS. 2. Value addition:- Itmes like valves, flanges, speciality items, reducers can be estimated from P&ID. Length of pipes, elbows, width of pipe rack can be estimated by referring ... Read More »