Stephen M. Hall, PE January 21, 2016
Plan Requirements • Operations • Soils • Flows/Conditions • Acceptance Criteria • Systems • Costs Inventory • Tanks • Equipment • Piping
Level branch connections in horizontal pipeline Flow direction into a TEE
Reynolds number – It’s not that easy!
Type of Solid Flow Velocity, ft/s Fine 3 to 5 Sand 5 to 7 Pipe Size Flow for 5 ft/s Re (water @25 C) 1 inch 9.3 gpm 38,200 1 ½ inch 23.0 60,200 2 inch 42.8 82,200 3 inch 100.8 126,100
NPSHa = P1 P1 x 2.31 VP H + H Δ P P1 = Tank Pressure, psia ‐ Δ P x 2.31 H = Liquid Height, ft Δ P = Pressure Loss to Friction, psi VP = Vapor Pressure, psia ‐ VP x 2.31 PSI x 2.31 = feet H 2 O
Pity the poor operator Equipment setup Manual cleaning steps Monitoring Documentation
Take inventory – know what needs to be cleaned Plan Establish acceptance criteria – write a URS Regulatory Clean in a Reproducible and Effective manner Flow Find a path to every pipe, component and equipment Rates/Paths Calculate pressure drops Hydraulics Remember NPSH requirements for pumps Utilities/ Purified water and WFI consumption rates establish size(s) for CIP Infrastructure tank(s) Valves vs. flow panels / swing elbows Operations Equipment setup / COP Validation Acceptance criteria from URS shall@geieng.com
Recommend
More recommend
