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Vertical
Cryogenic Storage Tanks for Atmospheric Gases
- Inner
Vessel - Stainless steel for cryogenic temperatures
with optimized design for lower weight
- Outer
Jacket - A system consisting of 3 legs with transport
supports & lifting lugs for safe transport, easy lifting
and low cost erection using a single crane, even in the
case of 3 legs tank design.
- Insulation
- A multi-layer insulation (super insulation), new inner
support system and high vacuum with absorbent to ensure
long holding time and low evaporation rate
- Piping
- Stainless steel piping for reliability and long life,
ergonomically arranged workplace, flow diagram and gauges
at eye level
- Valves
- Stainless / bronze valves, fill cluster used as filling
module
- Pressure
Control - An easy adjustable multifunctional regulator
serves as pressure regulator, economizer and thermal relief
valve.
An aluminum flat fin PBU coil as standard.
- Instrumentation
- A high quality cryogenic pressure gauge and differential
pressure content gauge are standard with optional switches,
transmitter and / or telemetry unit.
- Safety
- Tanks are equipped with dual relief system with a variety
of options, accommodating relief valves and / or rupture
discs.
- Cleanliness
- All tanks and their components are cleaned and certified
for oxygen service.
- Outer
Finish - High–gloss white paint with excellent
corrosion resistance, patented engineered Siloxan coating
with low VOC
content
- Transport
- Rugged internal supports for safe transportation by road,
rail or container
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EVT
tanks are designed in accordance with the requirements for safe,
easy and economical operation. Many of the features have been incorporated
in close collaboration with leading industrial gas companies. EVT
series tanks are vertical, stationary, pressure vessels with multi-layer
insulation for long term storage of cryogenic liquefied gases under
pressure such as nitrogen (LIN), oxygen (LOX), and argon (LAR),
and/or carbon dioxide (LCO2) or nitrous oxide (LN2O) and their withdrawal
in gaseous or liquid state.
EVT
series are available in capacities of 3,000 and 6,000 litres with
pressures of 19, 26
and 37 bar in accordance with and conforming to EC directive 97/23/EC
(PED - pressure equipment directive).
Tank design is in accordance with EN 13458-2.
| Flow
Schematic
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| Nomenclature
(standard model — not all options shown)
A1
Fill connection, part of fill cluster
BD* Bursting discs
C1* Fill connection, part of fill cluster
LI Level indicator
LST* Differential pressure transmitter
PBU Pressure building vaporizer
PI Pressure indicator
PT* Pressure transmitter
RG1 Pressure control valve / Economizer
S1 Safety valves, inner vessel
S2 Vacuum safety valve
S5 Thermal relief valve, part of fill cluster
V1 Bottom fill valve, part of fill cluster
V2 Top fill valve, part of fill cluster
V3 Isolation valve, bottom filling
V4 Isolation valve, top filling
V5* Valve, vapor vent, gas outlet
V6 Valve, trycock
V9 Valve, external vaporizer
V11 Vacuum gauge
V12 Vacuum pump down
V17 Check valve, part of fill cluster
V22* Valve, liquid outlet
V28* Fill line drain, part of fill cluster
* options
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