BS&B – Flameless Relief Venting

FlameFree™ Explosion Venting
Flameless Venting

Flame, Dust and Pressure Control: Intercepts / Quenches / Retains

Performance Features

• Flame Arresting – No flame escapes providing a safe operating environment for personnel. Eliminates the possibility of a secondary ignition and subsequent explosion external to the protected equipment.
• Dust Retention – Retains process product removing the possibility of potentially toxic product entering the environment.
• Pressure Retention – Absorbs explosion pressure peak, protects personnel and surrounding environment from pressure blast.
• Temperature Control – Absorbs fireball with negligible temperature rise in surrounding environment.

Description

The quenching module retains the flame and hot gases of a deflagration as well as the burning and unburned dust passing through the open explosion vent. The 3-dimensional mesh arrangement acts as a heat sink that interrupts the explosion in mid-stream as well as an absorption of the pressure wave and dust that would normally be ejected by a vented explosion.

While the flameball temperature of a dust explosion can easily reach 500°C/ 932°F, the IQR quenching module typically remains below 100°C/212°F followed by rapid cool down due to its large surface area. This results in a negligible change in temperature in the environment surrounding the IQR System.

With the quenching of flame, retention of dust, and control of pressure and temperature provided by the IQR system, this safety device may be applied indoors whenever the impact of a vented explosion must be avoided.

Click Here for the IQR Round FlameFree Data Sheet

Click Here for the IQR Rectangular FlameFree Data Sheet

Click Here for the BS&B Industrial Explosion Protection Overview Brochure

BS&B IQR Round FlameFree™ Explosion Relief Vents

BS&B IQR Rectangular FlameFree™ Explosion Relief Vents

BS&B IQR Rectangular FlameFree™ Explosion Relief Vents – Stainless Steel

Applications:

Application of the IQR System™ The IQR System is recognized as an explosion venting device by Codes and Standards such as NFPA 68, NFPA 654 and the European Atex Directive. The IQR System is a solution for the protection of process equipment installed indoors where one or more of the following conditions exist:

• Venting to outside requires ducting that is too long. Vent ducting that exceeds 20ft/6m in length is not recommended — ducts up to 10ft/3m in length have the least impact on the pressure developed within the protected process equipment.
• No space to install venting is available. This can arise where equipment is installed closely packed leaving no room for short and straight ducting.
• No access is available to outside for vent ducting. This can arise where equipment is installed in basement areas as where no outside wall is present.
• Release of fireball outside is unacceptable; a fireball might be ejected up to 100ft/ 30 meters and have 10 times the volume of the process equipment being protected.
• Release of dust (burned and unburned) outside is unacceptable.
• Release of explosion pressure pulse is unacceptable; adjacent building structures can be damaged by a pressure pulse that can exceed 2 or 3 psi over a large area for a short time.

Many of these application concerns apply to outdoor process equipment as well. The IQR System may be applied to outdoor process equipment where precautions are taken to avoid buildup of snow, ice and water in the quenching module.

Specification:

The IQR System™ is an explosion venting device. The following information is required to select and specify the correct IQR unit for your application.

• Process Dust (Kst and Pmax)
• Process Equipment Description (Volume(s)); preferably drawings including inlet and outlet connections.
• Normal operating pressure and temperature
• Protection pressure for process equipment (Pred)

Should this information be unavailable, let BS&B technical sales personnel review your application with you.

BS&B has solutions you can trust.  Have BS&B Engineers help specify a standard or custom design for you today.  Call us at 1-877-705-9864.