Unit map OEG
Refinery Reference Series

Crude Distillation P&ID Explorer
Learn
Teaching modes
Guided tour
Walks the unit in process order, one vessel at a time.
What if…
Upset and failure scenarios: what fails, what alarms, what to do.
Recall drill
Labels hide and you click the answers on the drawing.
Build the sheet
The sheet goes blank and you draft it — place the equipment, then run the streams.
{{ tourStepLabel }}
End tour
{{ scnTopLabel }}
Exit what-if
{{ drTopLabel }}
End drill
{{ a.label }}
{{ ddLabel }}
Refinery Reference Series
SERIESRefinery unit map
{{ g.name }} {{ g.n }}
{{ u.tag }}{{ u.name }}
{{ u.tag }}{{ u.name }}
Unit overview {{ ovLead }}
{{ e.v }}
{{ e.l }}
Full brief
In & out
{{ b.n }}{{ b.label }}
Do not lose these
{{ c.tag }}{{ c.svc }}
Watch first
{{ w.p }}{{ w.r }}
Instruments, valves and stream numbers hidden — plain names only. Trace
All systems
Crude & products
Heat recovery
Steam & water
{{ trLabel }}
{{ t.label }}
Sheet
Field
Simplified
Full P&ID
Field inset
Display
Layers
Default view
Fit sheet
Legible type
Animated flow
Instrument bubbles
Operating data
{{ c.label }}
Key
Primary process
PA / gas / fuel / utility
Instrument signal
Crossing — no connection
TCInstrument
Valve · PSV
4Stream № — see table
{{ focusLabel }}
{{ zoomPct }}
FCLCFCTITCFCTCLCFCFCLCLCLCLCPCLC 101101102101102104101103103105105106107102101104 A/D P-101 A/B E-101 A/B V-101 E-102 A/B V-102 H-101 C-101 C-102 C-103 C-104 EA-101 V-103 P-102 A/B P-103 P-104 P-105 A/B P-106 P-107 P-108 PSV-101 PSV-102 PSV-103 Crude Charge Pumps Cold Preheat Desalter Hot Preheat Preflash Drum Atmospheric Heater Atmospheric Column Kero Stripper Diesel Stripper AGO Stripper Overhead Condenser Overhead Accumulator Residue Pumps Crude from tankage Wash water Brine to WWT To flare To flare Off-gas to gas plant Naphtha to stabilizer Reflux Kerosene Diesel Atm gas oil Atm residue to vacuum unit Stripping steam Stripping steam Sour water Fuel gas Crude Charge Pumps First Warm-Up Salt Washer Second Warm-Up Preflash Drum Crude Furnace Main Tower Kerosene Stripper Diesel Stripper Gas Oil Stripper Air Coolers Overhead Drum Upper Heat Loop Middle Heat Loop Return & Product Pumps Kerosene Pumps Diesel Pumps Gas Oil Pumps Leftover Oil Pumps Crude oil from the tank farm Clean water in Salty water out Gas — to the gas plant Naphtha — future gasoline Back to the tower top Kerosene / jet fuel Diesel Heavy gas oil Leftover heavy oil — to the vacuum unit Steam in Steam in Oily water out Fuel gas to the furnace 1234567891011121314151617 {{ odOverlay }}
In the field {{ insetTag }} Open ✕
{{ insetHint }}
{{ selTag }} Datasheet ↗
{{ selName }}Held✕ ClearShow on sheet ↗ {{ selDuty }}
{{ selDesc }}
Where it stands {{ elStr }}
Goes in{{ ioIn }}
Comes out{{ ioOut }}
{{ f.v }}{{ f.k }}
{{ c.label }}
← Back
{{ scnStepLabel }}
{{ scnNextLabel }}
{{ drNextLabel }}
← Back
Next →
Overview
Streams{{ tS.n }}
{{ tabELabel }}{{ tE.n }}
Loops{{ tL.n }}
{{ tabSub }}
°F · psig
°C · barg
№
Stream
Ph
{{ tempHdr }}
{{ presHdr }}
Flow
{{ r.no }}
{{ r.name }}
{{ r.phase }}
{{ r.t }}
{{ r.p }}
{{ r.flow }}
Datasheet ↗
Control loops · 15
Indication & alarm · 1
Relief devices · 3
Simplified training reference — representative conditions only; not for engineering, design, or construction use. © OEG LLC · The Operations Excellence Group.
Notes & declared simplifications
Simplified training reference — atmospheric crude distillation with preflash and three sidecut strippers. Pressures are gauge (psig / barg), stated at the № badge. Relief is shown representatively — PSV-101/102/103 stand in for the unit's full relief system — and every control loop is drawn through to its final control element. Not for engineering, design, or construction use. © OEG LLC · The Operations Excellence Group.
CDU-100
Unit overview
Crude Distillation
Click any stream, loop or scenario to hold it on the diagram behind this panel.
CloseEsc