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RAISING MOISTURE CONTENT OF DUST PARTICLES TO MITAGE THE RISK OF EXPLOSION OR INCENDIVE EVENTS IN PAPER SHREDDING

Operators of Confidential Document Destruction Facilities are threatened with the serious risk of fire and or explosion due to significant quantities of
ignitable / explosible fugitive dust caused by mechanical shredding and handling / baling of shredded paper.
The Piian High Pressure Mist System represents an efficient and effective fire and or dust explosion mitigation tool. A Piian High Pressure Mist System
will increase the moisture content of the air within the envelope of a building and consequently the moisture content of the dust and stored paper
within a paper processing building. Importantly, it will do so without causing undue wetting that leads to problems for the operator which include,
clogging of machinery, saturation of material, damage to material, handling problems, surface water issues, ground water problems etc.
Increasing the moisture content of paper dust particles is an accepted dust mitigation practice that has been documented by the NFPA, OSHA and
AQMD.
When paper dust particles are subjected to a moisture content increase, they increase in mass and so lose their ability to remain fugitive (buoyant) in
the air and to contribute to dust distribution and layering. Secondly, dust particles subjected to moisture increase agglomerate and behave as larger
particles that have an increased ignition temperature, decreased exposable / combustible energy and minimum exposable concentration.
NFPA 654-2006 and NFPA 664-2012 are the standards by which Piian Dust Suppression Systems are designed and applied for the prevention of fires and
or explosions in paper (and wood) processing.
Within NFPA 654-2006, please refer to the following:
Sections A.3.3.4 and A3.3.16 – The Piian High Pressure Mist System will reduce the incidence of combustible dust, moisture content is a factor used in
determining the deflagration hazard of dust. The system will maintain paper dust above its MEC (minimum explosible concentration) and will increase
its MIE (minimum ignition energy).
Section 8.2.1.2 – The system will significantly reduce the incidence of fugitive dust, will slow the buildup of dust layers on horizontal surfaces and will
decrease the housekeeping / cleaning load.
Section 8.2.2.1 – Dust with increased moisture content will less prone to forming dust clouds during cleaning.
Within NFPA 664-2012, please refer to the following sections:
Section 3.3.25 – where the NFPA makes the connection between combustible wood processes and paper processes. (Note: Section 3.3.25 specifically
uses the words “and Paper”).
Section A.3.3.17 – Where Minimum Exposible Concentration (MEC) is defined and where the moisture content of paper dust is a critical outcome
factor.
Section A3.3.27.1 – Moisture content is a factor used in determining the deflagration hazard of dust.
Section A4.2.2 – Moisture content is a factor that has a profound effect on dust deflagration. Moisture in dust particles raises the Minimum Ignition
Temperature (MIT), Minimum ignition energy (MIE), and minimum exposable concentration (MEC) by increasing agglomeration of particles.
Additionally, the EPA AQMD considers a mist system as a suitable dust mitigation measure per Rule 403 and Rule 1137.
The size of the Piian Mist system determines the rate of moisture addition; the suitable moisture addition rate is determined by Psychrometric
Calculation. The system activation / moisture level within the building is maintained by a Humidistat that causes the mist system to cycle on and off
around a target air moisture level (relative humidity of 75%). Through experience we have learned that this target air moisture level results in a 50%
moisture content addition to dust material and a 1 - 2% moisture content increase in stored paper material.
There is no prescriptive standard from the NFPA, OSHA or AQMD that applies to a mist system for this use. However each authority indicates that
raising the moisture content of dust is an effective method of dust mitigation. The Piian Mist system has been proven to be highly effective in raising
the moisture content of dust in a wide variety of industrial applications, including multiple paper shredding operations, for over 20 years.
The Piian Mist system is designed to be a fire hazard mitigation system, not an actual fire suppression or fire extinguishing system. It is however and
effective an efficient method for prevention of hazardous dust conditions for Confidential Document Destruction Operators.

 

Prepared by:

Greg McGrath, Senior Engineer, Piian Systems LLC

Thursday, 09 June 2011 13:34

All Natural Piian Odor Neutralizer Overview

Subject: Landfill Odor Control, Wastewater Odor Control, Compost Odor Control, Garbage Odor Control

An Original – Over 25 years ago, Piian Odor Neutralizer was the world's first all-natural industrial odor neutralizer, subsequently copied and mimicked many times, yet it remains most effective and the safest with the longest track record.

Not a Perfume - Piian All Natural Odor Neutralizer absorbs then destroys malodors to leave a neutral odor balance – when used in the right proportion you will smell nothing, neither the mild floral aroma of the product nor the malodors in the environment.

Uses: Large scale odor control on landfills, compost sites, garbage transfer stations, recycling facilities, wastewater treatment, sewage plants.

Dispersion: Piian Vapor Systems, Piian High Pressure Mist System.

Mode of Operation – When atomized or vaporized into an environment molecules of Piian Odor Neutralizer statically attach to malodor molecules rendering the odor immediately imperceptible. In a secondary operation the Piian molecules catalyze and accelerate the natural biodegrading process.

Performance - Piian odor neutralizer has been tested by independent laboratories to confirm is performance. It has been successfully used in a wide variety of wastewater a solid waste applications for over 25 years.

References - We can supply multiple references to confirm its track record in reducing / eliminating the incidence of neighborhood odor complains.

Safety – Piian Odor Neutralizer exceeds all regulatory safety requirements. It have been independently tested and complies with EPA Guidelines 81-1,2,3,4,5,6. Its LD50 rating = 0. It is USDA approved. It has been approved for export / import in over 30 countries.

Contents – A proprietary blend of natural plant extracts and essential oils. Every ingredient used in the manufacturer of Piian Odor Neutralizer is food or pharmaceutical grade. Every ingredient is considered GRAS. All ingredients are widely consumed as part of the human food chain.

Handling and Transportation – Piian Odor Neutralizer is non-hazardous, non-sensitizing, non-irritating, non-allergenic and contains no enzymes. It is nonflammable, considered normal and stable, spills may be simply flushed to drain

The Environment – Piian Odor Neutralizer is completely biodegradable, ecologically safe and presents no threat to animal or aquatic life.

Thursday, 09 June 2011 13:27

Neighbors Complaining About Odors?

Nuisance odors can land operators of landfills, wastewater treatment plants and compost facilities in a lot of trouble.

Piian Systems manufactures a variety of products that will solve community odor complaint problems quickly. We offer a fast track solution that offers little to no upfront design and very quick installation effectively fixing the problem in a matter of weeks. Because there is very little upfront design and no necessity to engage in a lot of consultation, our products are very affordable.

The Piian High Pressure Mist System can provide an odor neutralizing barrier up to 5 miles in length. The Piian Odor Neutralizing Vapor System can be quickly installed into buildings, around tanks and tipping areas and will operate in freezing conditions. Piian Odor Neutralizer is effective and safe in eliminating odors.

We can provide many references where Piian Odor Neutralizing Systems have completely eliminated or significantly reduced nuisance odor complaints to manageable levels.

With regard to perimeter odor control in landfills, compost sites, wastewater treatment facilities, please refer to the following notes on the operation of the wind speed and direction sensor (WSDS):

If the wind speed is within the specified range and blowing in a designated direction, the logic state is referred to as "TRUE". Depending on register programming, a START signal will be sent after certain time restrictions have been satisfied.

If the wind speed or the wind direction is outside the specified speed or direction, the logic state is referred to as "FALSE". Depending on register programming, a STOP signal will be sent after certain time restrictions have been satisfied.

TRUE, FALSE, START and STOP are all different logical states. TRUE and START will not occur together. FALSE and STOP will not occur together.

 

Please refer to the following link:

http://www.epa.gov/iaq/pubs/ozonegen.html

Piian Odor Neutralizing Technology complies with EPA Guidelines 81.1,2,3,4,5,6

Read More Here.