Cone roof tank symbol
Also called Atmospheric storage tank, Fixed roof tank
A cone roof tank stores liquid at or near atmospheric pressure under a fixed conical roof.
What the cone roof tank symbol means
A cone roof tank stores liquid at or near atmospheric pressure under a fixed conical roof.
How it is drawn
A rectangle with a shallow triangle on top for the roof.
The cone roof tank symbol in each standard
Drawn as on most US-style legend sheets.
Tank with conical roof and flat bottom. Drawn the same way.
German (DIN): Festdachtank. See DIN P&ID symbols.
Where you see it on a P&ID
For water, diesel, chemicals and low-volatility products.
Tag codes
The cone roof tank is commonly tagged:
- T
- TK
Tag formats follow the project numbering procedure. For instruments, the letters follow ISA 5.1, explained on the instrument symbols page.
Related symbols
Frequently asked questions
What does the cone roof tank symbol look like on a P&ID?
A rectangle with a shallow triangle on top for the roof.
What is a cone roof tank used for?
A cone roof tank stores liquid at or near atmospheric pressure under a fixed conical roof. You will find it for water, diesel, chemicals and low-volatility products.
What tag does a cone roof tank have?
It is commonly tagged T, TK. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the cone roof tank symbol the same in ISA and ISO?
Yes, ISO 10628-2 draws it the same way (X2063). Companies vary the details, so always check the legend sheets at the front of the P&ID set.
What is the cone roof tank called in German?
Festdachtank. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016