Draw a section of a P&ID diagram for a vessel receiving a process liquid through an insulated 4-in schedule-40 pipe. The purpose of the vessel is to store approximately 5 minutes of liquid volume and to provide “capacity” for a feed pump connected to the bottom of the vessel using a 6-in schedule-40 pipe. The diagram should include the following features:

The vessel is numbered V-1402 and the pump(s) are P-1407 A/B.

The discharge side of the pump is made of 4-in schedule-40 carbon steel pipe and all pipe is insulated.

A control valve is located in the discharge line of the pump, and a double block and bleed arrangement is used.

Both pumps and vessel have isolation (gate) valves.

The pumps should be equipped with drain lines that discharge to a chemical sewer.

The vessel is equipped with local pressure and temperature indicators.

The vessel has a pressure-relief valve set to 50 psig that discharges to a flare system.

The tank has a drain valve and a sampling valve, both of which are connected to the tank through separate 2-in schedule-40 CS lines.

The tank level is used to control the flow of liquid out of the tank by adjusting the setting of the control valve on the discharge side of the pump. The instrumentation is similar to that shown for V-104 in Figure 1.7.

Transcribed Image Text:

T-101 3-inch 40 CS X (LIC LAL) E A 121 19 12-inch 40 CS TI FE FAH (EAL) TETT 6-inch 40 CS E-106 [FAC FY xxx 4-insch 40 CS TAH) TAL (FOV) * FI 3-inch 40 C5 TI TRC TCV) 4-insch 40 CS 2-insch 40 CS 2-in sich 40 CS +4 TI X-O E-104 4-in sch 40 CS 4-insch 40 CS P-102A (PAL (PAH) PY PRC PT PE DOX ⓇX-7 V-104 XO DOOⓇ P-1029 (PCV) A (LAH LAL) LELTLICLY 2-insch 40 CS Utility Connections 1. Cooling Water (CW) 2. CW return 3.250 psig Steam 4. Condensate 5. Sample Port 6. Chemical Sewer 4-insch 40 CS TI Fuel Gas CS-Carbon Steel (LCV) Benzene 7. Vent to Flare 8. Clear Sewer 9. Vent to Atmosphere Insulated Pipe Toluene