AseptSoft Core Documentation
AseptSoft Core Documentation
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Source

A Source is a fluid origin or supply point on a P&ID drawing. Sources represent where Fluids enter the piping system — water supplies, chemical feeds, steam generators, drain points, and similar utility connections.

In pharmaceutical facilities, sources represent the critical utility tie-in points: the WFI loop supply, the CIP chemical dosing units, the clean steam generator, and the nitrogen blanket supply.

📋 Properties

Property

Type

Description

Name

Text

Source identifier (e.g., "Water Supply", "Steam Header", "CIP Acid Tank")

Content

Text

The fluid type/name this source provides (e.g., "Water", "Steam", "CIP Acid")

Fluid Flow Content

Reference

Reference to the Fluid definition with its color

Secondary Shapes

List

Related visual entities (tag text, annotations)

Custom Attributes

Collection

User-defined attribute key-value pairs

⚙️ How Sources Work

Sources are the starting points for fluid flow in Fluidstream Simulations. When a source is connected to the piping network:

  1. The source generates its configured Fluid into the system

  2. The fluid flows through connected piping based on State fluid responses (Allow/Deny)

  3. The source is automatically colored based on its fluid's color

🎨 Source Coloring

Sources are colored differently from Engineering Items:

  • Sources take their color from their Fluid Flow Content — the assigned Fluid

  • When the fluid state changes, the source color updates automatically

  • The Color Overrule System manages source colors at the Item State priority level (highest)

🔄 Connection to States

Sources work with States through the Generate fluid response:

  • When an Engineering Item adjacent to a source has a state with Generate response, that item acts as a fluid generator

  • Sources themselves inherently generate their configured fluid

  • The source's fluid enters the system at the source's connection point and flows downstream

📌 Example: Common Sources

Source Name

Content

Fluid Color

Description

WFI Supply

WFI

Blue

Water for Injection supply point

CIP Acid Tank

CIP Acid

Orange

Acid cleaning solution

CIP Caustic Tank

CIP Caustic

Purple

Caustic cleaning solution

Clean Steam Generator

Clean Steam

Gray

Sterilization-grade steam

Nitrogen Supply

Nitrogen

Yellow

Inert gas for blanketing

Drain

—

—

Drain/waste collection point

💊 Pharma Scenario: WFI Loop Supply Point

In a WFI distribution loop, the source "WFI Supply" represents the point where Water for Injection enters the P&ID from the generation system:

CIP Step

Source Active?

Fluid Injected

Downstream Effect

Pre-rinse

Yes

WFI (blue)

WFI flushes the vessel and piping to drain

Caustic wash

No

—

CIP Caustic source takes over; WFI supply valve is closed

Intermediate rinse

Yes

WFI (blue)

WFI rinses out caustic residue

Final rinse

Yes

WFI (blue)

Final WFI rinse for conductivity verification

💊 Pharma Scenario: CIP Caustic Dosing Unit

The source "CIP Caustic Tank" supplies sodium hydroxide solution during the alkaline wash phase:

  1. The CIP supply valve opens, allowing caustic to flow from the dosing unit into the main CIP supply header.

  2. AseptSoft colors the source purple (matching the CIP Caustic fluid definition).

  3. The Fluidstream Simulation propagates the purple color through all downstream piping where valves are in the "Allow" state.

  4. When the step changes to the rinse phase, the caustic source is deactivated and the WFI source takes over.

🛠️ How To: Define a New Fluid Source

  1. Ensure the source block is classified as Source in the P&ID Components Classification window.

  2. Open the module and locate the source in the Sources panel.

  3. Assign the appropriate Fluid to the source's Content property.

  4. Run a Fluidstream Simulation to verify that the fluid propagates correctly from the source through the piping network.

  5. Adjust downstream valve States to control which paths the fluid follows.