Explosion Protection System Components

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 units and suppressors to tailor the design of the protection system to each individual application.

Control Units

  • Single-Zone (EX-100.1/200) and Multi-Zone (EX-8000) Control Unit

    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. The unit is packaged in an enclosure which is designed 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 verified electronically. These control units provide both trouble relay contacts for process interlocking, and alarm relay contacts for notification should a system actuation occur.

    Download the single-zone datasheet
    Download the multi-zone datasheet

Detection

  • SmartDS Dynamic Detection system

    Dynamic measuring cells in the detector sense changes in pressure. Once pre-programmed pressure values are 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 to 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.

    Utilizes 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.

    Download the Datasheet

  • Static Pressure Detector

    Static pressure detectors are used in stable processes that only have one threshold (at which point the detector is activated). The detector is field-adjustable as well as FM approved. These detectors are typically mounted in pairs with vibration isolation standoffs to minimize the risk of false alarms due to operator errors. Static pressure detectors are dependable, reliable and have a proven track record.

    Download the Datasheet

  • Infrared and Ultraviolet Infrared Detectors

    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.

    Download the IR-13 Datasheet
    Download the UV/IR Datasheet

Suppressors

  • PistonFire II 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.

    Download the Datasheet

  • E-HRD Suppressors

    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, optimal deployment of the suppressant powder is achieved.

    Download the Datasheet

  • Spherical Dry Chemical Extinguisher

    The 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, 30-inch long actuator cable and an explosive triggered actuator. A lifting ring is provided for ease of handling.

    Download the Datasheet

  • 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. The nitrogen then expels the suppressant at high rate through the spreader assembly into the protected volume.

    Download the Datasheet

  • 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.

    Download the Datasheet

Isolation Devices

  • High-Speed Isolation Valve

    The High-Speed Isolation Valve provides a solution for vital explosion isolation applications. It operates in milliseconds to provide a mechanical barrier within a pipeline. The High-Speed Isolation Valve has a stainless-steel body incorporating a full ported stainless-steel valve gate. The valve is designed to withstand a 150 Psi pressure wave from a deflagration without deformation. Closure is achieved in milliseconds by rapidly discharging nitrogen into a piston actuator. The nitrogen is supplied by an IEP Technologies High-Rate Discharge Bottle. Detection is typically provided by an IEP Technologies explosion pressure detector. The detector is monitored by an IEP Technologies control unit which provides supervision, alarm, system actuation and process shutdown. Typical applications for the valve include explosion isolation on dust collectors, mills, fans, vapor recovery lines, dryers, and other interconnected process equipment.

    Download the Datasheet

  • ProFlapPlus Passive Isolation - Flap Valve

    For process equipment mounted outside or close to an outside wall, explosion relief venting is a viable protection method. However, in order to protect the upstream equipment, it is vital that the protection method includes a means to mitigate propagation of flame and burning materials back upstream. This can be achieved by either using an active isolation system (chemical or mechanical), or by using a passive isolation valve. The passive explosion isolation valve is a self-actuating device, which provides a mechanical barrier to mitigate the propagation of flame and burning materials to upstream equipment. The passive isolation valve provides features unique to this style of valve, including an Accumulation Sensor, Wear Sensor and Interface Panel.

    Download the Datasheet

  • VENTEX Passive Isolation - Float Valve

    For process equipment mounted outside or close to an outside wall, explosion relief venting is a viable protection method. However, in order to protect the upstream equipment, it is vital that the protection method includes a means to mitigate propagation of flame and burning materials back upstream. This can be achieved by either using an active isolation system (chemical or mechanical), or by using a passive isolation valve. The passive explosion isolation valve is a self-actuating device, which provides a mechanical barrier to mitigate the propagation of flame and burning materials to upstream equipment.

Vents & Flameless Vents

  • Flameless Explosion Vents

    Many process vessels are located inside where standard explosion venting cannot safely be employed. For these applications, flameless explosion vents become a viable option. The flameless vent consists of a burst panel, mesh vent chamber and burst indicator. When an explosion occurs, the bursting panel ruptures and directs the vented explosion in a controlled manner into the flameless vent chamber, where the flame is arrested, and gasses are cooled as they pass through the stainless mesh. The integrated electronic controls keep plant personnel informed of the status of the system. The specially-developed stainless steel mesh does not allow any flame to pass through the flameless vent.

    Download the Datasheet

  • Explosion Vents

    IEP Technologies Explosion Vent Panels are designed to minimize damage to process vessels, ducts, and other industrial structures in the event of a deflagration involving combustible materials. They are relief devices designed to rupture at a predetermined pressure, allowing the fireball and pressure from a deflagration to vent into a safe area. These highly efficient vent panels fit into the walls and sometimes the roof of a process vessel, and are available in a variety of sizes, configurations, ratings, and materials to suit specific applications. Styles include rectangular or round, domed or flat vent panels. Options include insulated vent panels and burst sensors for indication that a vent panel has ruptured.

    Download the Datasheet


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