D1000 Downdraft Table

Protect Your Staff and Building from Mailborne Threats

D1000 Downdraft Table

The D1000 Downdraft Table is used wherever suspicious packages need to be examined that may contain toxic or flammable substances, explosives, drugs, or biological agents. A powerful downward current is created over the perforated inspection surface, directing air flow down and away from staff. Exhaust is channeled through a sophisticated series of filters to trap particles and prevent the spread of vapors and gases.

The D1000 is a key component of Research International’s ASAP III Postal Screening System. In addition to protecting personnel and facilities, it continuously collects and delivers samples for instant analysis by the ASAP III detection instruments. It is most often installed as part of a negative pressure room for maximum protection against mailborne hazards.

This product saves lives, protects buildings from contamination, and can improve inspection rates significantly.

The D1000 downdraft table is manufactured in accordance with U.S. Patent No. 7,377,952.

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Keeping Staff and Workplace Safe

 
  • Features
  • Applications
  • Operational Details

Features

Product Features

  • Perforated 304 stainless steel work surface
  • 24-gauge cold rolled steel body
  • Durable powder-coated baked enamel finish
  • Powerful internal blowers for strong downward air flow
  • Three-stage filter design: Pre-filter + HEPA + VOC filter
  • 99.97% aerosol capture efficiency for particles >0.3 microns
  • Large work surface
  • Customizable dimensions

Applications

Applications

  • Public and private postal examination rooms
  • Customs check points
  • Border patrol situations
  • Homeland security applications

Operational Details

D1000 Operational Details

Downdraft table diagram
The D1000 downdraft table protects staff from hazards.
Manual inspection processes involving the handling and opening of postal materials, shipping boxes, luggage, handbags, and packaged merchandise pose a risk to personnel during the inspection process and to the buildings in which the inspections are being done. If an article contains a biological agent, toxic chemical or explosive or flammable material, many different types and levels of damage could occur if the material was indiscriminately released or not detected.

The D1000 downdraft table is a patented device1 designed to mitigate many of the life-threatening and/or infrastructure damaging results of such hidden dangers and is of particular value to private and governmental postal inspection facilities.

The D1000 table incorporates a perforated metal surface over which suspect articles are opened. Inside the table are powerful brushless motor-powered blowers that pull air downward into the table through the porous surface and through a 3-stage filtration system that removes large debris, respirable particulates, volatile organic hydrocarbons (VOCs), and odors: All particulates greater than 0.3 microns in size are removed with an efficiency of 99.97%. Hazardous materials such as chemicals or biologicals that are in particulate form are captured by this HEPA filter section and trapped within it. Low concentrations of many gases are stripped by the VOC filter, while extremely high concentrations of toxic or explosive gases and vapors may optionally be exhausted to a remote safe area. The D1000 has an airflow of about 28,000 liters/minute or 1000 CFM over each square meter of perforated surface, providing a strong downward air velocity of between 1.0 and 2.0 meters/second.

This approach is superior in many ways to examination systems based on upward flowing laminar flow benches; so-called ‘updraft tables.’ If cover air is forced to flow upward, aerosol materials in the inspected articles will be broadly dispersed above the table surface, leading to possible contamination of the inspector’s upper torso, the inspection area, and all materials in the immediate vicinity. Toxic or flammable gases will likewise be more broadly dispersed. The downdraft approach allows inspections to be done at low risk without the need for hot and uncomfortable face masks or protective suits.

The D1000 downdraft table may also be equipped with CBRNE monitoring equipment. Research International’s ASAP II and ASAP III threat detection systems are currently being used with D1000 tables in both government and private mail inspection facilities to monitor for a range of threat agents including biological agents, toxic chemicals, explosives and nuclear materials. For this application a proprietary sampling structure is employed that provides effective sampling across the entire table surface.

 

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