Refrigerated and Cryogenic Storage

Reliable Venting and Flame Protection 

Ensuring the safety of refrigerated and cryogenic storage tanks requires balanced pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. and vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. protection, emergency venting protection, as well as safeguards against flame transmission. Typical configurations are customized to meet international standards, regulations, and site-specific conditions, ensuring safe and compliant operation of cryogenic storage tanks and protecting infrastructure.

Ammonia Storage Tanks

In ammonia service, rapid thermal shifts and operating transients can generate both overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. and vacuum conditions. An engineered system of PROTEGO® pilot operated relief valves, vacuum valves and in-tank valves offer durable, low emission pressure protection measures.​
For interconnected vent lines, a detonation arrester Detonation flame arrester Flame arrester designed to prevent the transmission of a detonation. can be used to prevent flame propagation following potential vapor ignition from sources such as a flare.

Highlights

Comprehensive protection
Specialized components designed for cryogenic storage
Controlled Pressure Relief
Solutions ensure controlled pressure and vacuum relief for safety
Flame Transmission Protection
Detonation arresters prevent explosions
Operational Safety
Integrated measures enhance safety in cryogenic service applications

Products for Ammonia Storage Tanks

DA-SB
In-Line Detonation Flame Arrester
Explosion Group
IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3
B / IIB
B / IIC
VN-VU
Vacuum Relief Valve
vacuum range
-2.6 up to -25 mbar
VN-A-PCPF
Pressure/Vacuum Relief Valve,
vacuum range
2.2 up to 7 mbar
pressure range
20 up to 1034 mbar
ITV-S
In-Tank Valve

Protection of LNG 
Storage Tanks

LNG storage requires reliable management of overpressure and vacuum conditions due to rapid temperature changes. This concept offers controlled pressure relief and high-capacity vacuum protection for stable tank conditions during normal and upset events. Detonation Detonation Explosion propagating at supersonic velocity and characterized by a shock wave. protection in the connected line prevents flame transmission, ensuring safe and compliant LNG storage.

Highlights

Pressure Management
Handling rapid temperature changes and pressure fluctuations in LNG storage.
Higher uptime & lower losses
via correct tank breathing and emissions control
Flame Transmission Prevention
Detonation protection prevents flame transmission
Safe LNG Storage
Integrated safety measures ensure compliant and secure LNG storage operations

Products for LNG Storage Tanks

DA-SB
In-Line Detonation Flame Arrester
Explosion Group
IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3
B / IIB
B / IIC
V/SV-XXL
Vacuum Relief Valve
vacuum range
-2 up to -16 mbar
VN-A-PCPM
Pressure/Vacuum Relief Valve
vacuum range
-2.2 up to -7 mbar
pressure range
20 up to 1034 mbar
VN-A-PCPF
Pressure/Vacuum Relief Valve,
vacuum range
2.2 up to 7 mbar
pressure range
20 up to 1034 mbar

Ethylene Storage Tanks

Ethylene storage tanks need reliable pressure and vacuum control, plus effective explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. safeguards for piping. This concept combines high-capacity pressure relief and responsive vacuum relief for stable conditions during normal and upset events. 

In-line detonation protection prevents flame transmission, ensuring a safe and compliant system.

A cutaway 3D rendering of a large cylindrical storage tank filled with liquid, showing multiple red safety valves on the roof connected to a flare stack.
A cutaway 3D rendering of a large cylindrical storage tank with a floating roof, showing multiple red vent/safety devices on top connected by piping to a flare stack.

Propylene Storage Tanks

Propylene service faces rapid thermal shifts, high vapor pressure, and operating transients that can cause overpressure and vacuum conditions. This concept offers controlled pressure relief, responsive vacuum protection, and emergency relief for abnormal events. Detonation protection prevents flame transmission through piping, while inert gas Inert gas Non-flammable gas which will not support combustion and does not react to produce a flammable gas. blanketing stabilizes the annular space and reduces flammable atmosphere risks, ensuring safe and compliant operation.

Highlights

Comprehensive protection
specialized components developed specifically for cryogenic environments
Advanced safeguarding measures
maintaining the integrity and safety of tanks under demanding operating conditions
Safeguarding
against potential explosions through integrated detonation protection
Effective management
of pressure, vacuum, and vapor control across the storage system
A cutaway 3D rendering of a vertical cylindrical storage tank, showing red vent/safety devices on the roof and a small red component at the bottom inside the empty tank.

Protection of LIN LOX LAR Storage Tanks

In LIN, LOX, and LAR cryogenic storage, stable tank conditions are crucial due to low temperatures and rapid pressure changes. This concept provides controlled pressure and vacuum relief, plus emergency pressure relief for normal and upset events. A fast-acting bottom drain function enhances safety during draining and maintenance Maintenance Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order. , ensuring tank integrity and compliant storage.

LPG Storage Tanks

LPG storage requires effective control of pressure and vacuum conditions, combined with safeguards against flame transmission. The application concept incorporates Pressure and Vacuum Relief Valves Pressure and vacuum relief valve A pressure and vacuum relief valve is a pressure equalization valve for impermissible pressure and vacuum in a closed system. , In-Tank Valves, and in-line Detonation   Flame Arresters Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. to support stable operation and protect the tank during both routine service and abnormal conditions.

A cutaway 3D rendering of a large storage tank filled with liquid, showing red vent/safety devices on the roof and piping leading to a flare stack with a flame.

Highlights

Safeguarding
against potential explosions 
Reduced product losses
and emissions
Supports safe low-temperature operation 
with documented compliance
Process opimization
cradle to grave project engineering support

Products for Refrigerated and Cryogenic Applications

VN-VU
Vacuum Relief Valve
vacuum range
-2.6 up to -25 mbar
ER/V
Emergency pressure relief valve
pressure range
5 up to 40 mbar
V/SV-XL
Vacuum Relief Valve
vacuum range
-2 up to -16 mbar
PM-HF
Pressure/Vacuum Relief Valve
vacuum range
-2.2 up to -7 mbar
pressure range
10 up to 1034 mbar
NB/AP
In-Tank Valve
DA-SB
In-Line Detonation Flame Arrester
Explosion Group
IIA1
D / IIA
C / IIB1
C / IIB2
C / IIB3
B / IIB
B / IIC
VN-A-PCPF
Pressure/Vacuum Relief Valve,
vacuum range
2.2 up to 7 mbar
pressure range
20 up to 1034 mbar
ITV-S
In-Tank Valve
ZM-R
Blanketing Valve
vacuum range
up to -200 mbar
pressure range
up to 500 mbar

We would like to express our gratitude to the PROTEGO® team for the extraordinary support provided to us in identifying and resolving the trouble of a premature opening of one of our ammonia tank safety valves. Your flexibility in dealing with the subject, the displayed sense of urgency, and immediate and professional hands-on approach are exceptional and clearly distinguish you from other OEMs in the industry. 

Get in Touch

Contact our engineers for your 
individual requirements