IEP Technologies Active Explosion Protection System Components

Whether the best explosion protection solution is suppression, venting or isolation, IEP Technologies offers the right products to meet your needs. Our system components undergo rigorous third-party testing to receive the approvals required by, for example, ATEX and NFPA. As each explosion protection threat is unique, we offer different types of explosion detectors, controls and suppressors to tailor the protection to each individual application.

IEP Technologies  – Dynamic Pressure “dp/dt” MEX Detector and FAB Unit

Dynamic measuring cells in the detector sense changes in pressure. Once pre-programmed pressure values have been exceeded the detector reacts within microseconds to raise an alarm. The MEX Detector has up to two ceramic sensors within a single, solid housing. This is the only detector with algorithmic-based output and decision-making logic based on full-scale explosion tests, expert knowledge and application experience. The output and decision logic provides the highest detection security by evaluating the difference between an explosion pressure rise and process pressure variations. The ceramic cell sensors make the detector more resistant against mechanical damage and corrosive dusts, gases and liquids. By means of a field terminal box (“FAB”) the MEX Detector can be connected to various control units.

Competitive advantages of the MEX Detector include:
· Dynamic pressure detection based on the characteristic temporal profile of pressure increase associated with confined explosion occurrences. This significantly increases false alarm immunity as well as detection security.
· Comprises two pressure-sensing cells to increase detection security and redundancy.
· Field-programmable unit to accommodate a wide range of hazard and process conditions. Also features a history buffer for programming set point during commissioning as well as diagnosis of incident after actuation.

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Click below to download the MEX Detector & FAB Unit Catalogue

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IEP Technologies  – Infrared and Ultraviolet Infrared Detectors

· IR-13 Infrared Flame and Spark Detector
· UV/IR Flame Detector

Optical detectors include infrared (“IR”) and ultraviolet infrared (“UV-IR”) detectors which are integrated in explosion prevention systems for specific applications. The IR detector is typically used in interconnected duct work for dust-handling systems. The UV-IR detector is used in combustible gas or vapor protection systems such as aerosol fill rooms and chemical storage rooms.

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Click below to download the Infrared Flame and Spark Detector Catalogue

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Click below to download the UV/IR Flame Detector Catalogue

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IEP Technologies  – Static Explosion Pressure Detector

The IEP Technologies Static Explosion Pressure Detector is a low inertia detector incorporating a highly sensitive stainless steel diaphragm. The diaphragm is mounted onto a 6-inch diameter eight (8) hole nickel plated steel mounting flange. The flange is bolted to a cast aluminum housing protected by epoxy paint. The screw cover to the housing has an o-ring seal to protect the field adjustable switch assembly housed within. As standard, the pressure detector comes with a 24-inch long braided cable assembly. A standoff mounting kit is also available. The mounting kit consists of a stainless steel standoff pipe, a detector mounting bracket, a hose assembly, hose clamps, gaskets, and an adaptor plate.

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Click below to download the Static Explosion Pressure Detector Catalogue

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IEP Technologies  – Control Unit

· Single-Zone – EX-100.1, EX-200
· Multi-Zone – EX-8000

A control unit is microprocessor-based and has both control and verification functions. It is comprised of control and battery charging circuits, a power supply and front panel which includes control and indication functions visible through a scratch-resistant window. A unit is packaged in an enclosure to provide superior dust contamination and weather resistance. Terminal access has been carefully designed for ease of installation.
Any signals emerging from the explosion pressure or flame sensors are recorded, tested and evaluated by the control unit. The monitoring and activation lines are continuously checked for wire breakage, earth fault and short circuit. Additionally, an automatic self-test system ensures that all important functions of the control unit are checked electronically. These control units provide both trouble relay contacts for process interlocking, and alarm relay contacts for notification should a system actuation occur.

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Click below to download the Single Zone Control Unit Catalogue

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Click below to download the Multi Zone Control Unit Catalogue

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IEP Technologies – Explosion Suppressor Types

eSuppressor™ (High Rate Discharge Suppressor)

The patented eSuppressor™ is a high-rate discharge extinguisher used for explosion suppression and chemical isolation systems. Its electro-mechanical operation is unique to the industry, as no pyrotechnic devices are required for activation. The eSuppressor™ has standard features that include pressure monitoring, lock out-tag out capability and LED indication of device status. A key benefit is that all the safety functions are fully monitored, which is not possible for any device employing pyrotechnic actuators, with full redundancy and third party SIL2 certification. Upon detection of an explosion event, the eSuppressor valve mechanism is actuated via the Explosion Protection Control Unit. The highly specified trigger mechanism allows the valve flap to open extremely rapidly (less than 10ms), which allows the suppressant to be discharged through the nozzle system into the protected volume.

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Click below to download the eSuppressor™ Catalogue

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Protractor Operated HRD (PHRD) Suppressor

These suppressors are used for explosion suppression of gases, solvent vapours and combustible dusts. The suppressors deliver high rates of suppressant that quench an explosion flame in its early stages, thus preventing a pressure rise from reaching dangerous proportions.

A cylindrical alloy steel container filled with 3kg, 4kg or 16kg of powder suppressant and pressurised to 60 bar (880 psi) with dry nitrogen. Inside the flange is a hinged flap supported by a beam which is kept closed by a latch. Two piston, non-explosive protractor operated actuators are used to initiate opening. When the actuators are activated by means of an electrical impulse from the associated control unit, pistons move the latch, which allows the flap to open and provide a clean , unrestricted opening. The nitrogen then expels the suppressant at high rate through the spreader assembly into the protected volume.

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Click below to download the Protractor Operated HRD (PHRD) Suppressor Catalogue

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Firewolf High-Rate Discharge Suppressor

The IEP Technologies Firewolf™ suppressor is designed to discharge suppressant in milliseconds within a process vessel, or to mitigate the propagation of flame through interconnected ductwork. It consists of a pressurized suppressant storage cylinder and a valve body that contains a dust-ignition proof, weatherproof enclosure. The Firewolf™ houses an electro-mechanical actuation mechanism and does not use pyrotechnic detonators or gas generators.

Upon detection of an incipient explosion, an actuation signal is sent to the suppressor by the control panel. The electronics of the valve trigger two pairs of capacitors which discharge into the redundant electro-motor coils, releasing the flap valve mechanism of the Firewolf™ and initiating the rapid release of the pressurized, suppressant into the protected area within milliseconds.

This suppressor features an electromechanical, non-explosive actuation for increased safety and reduced storage, licensing, and transportation concerns; reduced maintenance costs as there are no replacement actuators or detonators; and a Valve Transport Lock that functions as both a lockout/tag-out provision and promotes safe entry into protected vessel.

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Click below to download the Firewolf High Rate Discharge Suppressor Catalogue

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PistonFire II High Rate Discharge Suppressor

The PistonFire suppressor consists of a pressurized suppressant storage cylinder and a valve body that contains a dust-ignition proof, weatherproof National Electrical Manufacture’s Association (“NEMA”) enclosure. The NEMA enclosure houses the actuating mechanism, pressure switch, pressure gauge, fill valve, OSHA supervisory switch, and field wiring connections. The NEMA enclosure is completely sealed via screw cover and an explosion-proof quick-disconnect connector for easy connection to field wiring. Upon detection of an incipient explosion, the suppressor receives an actuation signal. The actuating mechanism initiates the rapid release of the pressurized, dry-chemical suppressant into the protected area within milliseconds.

Competitive advantages include:
– DOT, TC approved – pressurized and leak-tested at factory and shipped to site, vs. pressurizing and leak testing at customer facility
– Monitored and interlocked low-pressure switch per latest version of NFPA 69
– Non-explosive initiators, safe to handle (no ATF or UN restrictions)
– OSHA lockout plate per latest version of NFPA 69
– Nozzles can be inspected in-place (NFPA 69) vs. removal or vessel entry by other companies

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Click below to download the PistonFire II High Rate Discharge Suppressor Catalogue

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E-HRD Suppressor

The E-HRD suppressor is designed for installation on all types of vessels, ducts and pipes for dusts, gases and hybrid mixtures. The suppressor valve is closed with a domed disc and sealing ring and then pressurized with nitrogen. Beneath the domed disc are the actuation devices, comprising a detonator and line-cutting charge. Within approximately 1.5 milliseconds the line-cutting charge cuts a grooved hole approximately 300 degrees around the domed disc. Once the domed disc is cut, the nitrogen presses the disc down and the entire cross section is made available for the suppressant powder to flow out. Through a special nozzle system, an optimal deployment of the suppressant powder is achieved.

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Click below to download the E-HRD Suppressor Catalogue

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Spherical Dry Chemical HRD Extinguisher

This HRD dry chemical extinguisher is designed to discharge suppressant in milliseconds to quench an incipient explosion within a process vessel or to block the propagation of flame through interconnected ductwork. It is a spherical refillable container constructed of a high strength steel alloy. It consists of a storage container, fill valve, burst disc valve assembly, safety plate and 30-inch long actuator cable and an explosive triggered actuator. A lifting ring is provided for ease of handling.

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Click below to download the Dry Chemical HRD Extinguisher Catalogue

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