Portable High Efficiency Air Filtration (PHEAF) Device Field

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					Portable High Efficiency Air
 Filtration (PHEAF) Device
Field Testing and Validation
          Standard
  ANSI/IESO Standard 4310-2009
WHERE ARE HEPA FILTERS
       USED?

Whenever we need to move
   contaminated air -
 without the contamination
 coming along for the ride
   ASBESTOS, LEAD AND
MICROBIAL REMEDIATION . . .




      AFDs   & HEPA Vacuums
MERCURY SPILL CLEAN UP,
RADIOACTIVE PARTICLES


                                 c m
                              Q ui kTi e™ and a
                   TI FF (Uncompressed) decompressor
                                             s c
                       are needed t o see t hi pi t ure.




     AFDs   & HEPA Vacuums
           HEPA FILTERS
HEPA filters are designed to be 99.97 efficient
          at 0.3 micron size particles




  But what happens to that efficiency when you
  place that filter into a portable filtration device?
They are no longer HEPA efficient !

     1. They leak at the edges
     2. They leak at the seals
      3. They loose their seal
          during movement
      4. They get micro holes
        5. They grow stuff
      RESEARCH
SHOWING ACTUAL PARTICLE
       LEAKAGE
PHEAF DEVICE SHOWING NO LEAKAGE
PHEAF DEVICE SHOWING A LITTLE LEAKAGE
PHEAF DEVICE SHOWING SOME LEAKAGE
PHEAF DEVICE SHOWING WORRISOME LEAKAGE
                     HISTORY
          The first call for a “in field” testing and
certification standard for portable HEPA filtered devices
  appeared in an article in Outlook magazine in 1990.




            That was almost 20 years ago.
                     HISTORY
      Since 1990, the cost and portability of the
  particle counting equipment required for “in field”
testing and certification has significantly decreased.

   This equipment is now within the price range for
large contractors or for consultants to test equipment
      as part of their oversight of an abatement
                or remediation project.
   HAND-HELD PARTICLE COUNTERS




LIGHTHOUSE   KANOMAX   MET ONE   IQAir   FLUKE
HOW CRITICAL IS PHEAF DEVICE
         TESTING?
   • Only the HEPA filters are “certified”
       •Testing is done by a 3rd party
• PHEAF device manufacturers do not test or
          certify the complete device
• There is no standard that requires testing or
     certification of the complete device

        WHY SHOULD WE TEST THEM ?
CURRENT DOE EXPERIENCE

    Replacement HEPA filter testing
prior to installation into the HEPA device
    by the Dept. of Energy showed a
   20% failure rate of the filters alone
        1 IN 5 NEW FILTERS
      WAS NOT HEPA EFFICIENT !
 ACTUAL TESTING EXPERIENCE

1.HEPA filtered equipment contamination
           of a mold remediation
 2. HEPA filtered equipment leaked on an
            asbestos abatement
     3. Testing of numerous pieces of
contractor equipment showed significant
     leakage (shown in std. appendix)
SECONDARY ISSUE


Inability to adequately clean a
 PHEAF device when installing
       a new HEPA filter

       (The Kick Test)
DOE performs in field certification of
      all HEPA filtered devices
   because of their experience of
    significant failure rates and
          leakage problems
every time the equipment is moved

  (USING AEROSOL GENERATION)
 Portable High Efficiency Air
  Filtration (PHEAF) Device
Field Testing and Certification
       Interim Standard

    ANSI/IESO Standard 4310-2009
                    2. Scope
               This standard applies to
     Portable High Efficiency Air Filtration Devices.
                   (PHEAF Devices)

   This would include vertical and horizontal portable
          air filter devices, movable vacuums,
 hand held vacuums, and other filtered suction devices
     used for cleaning surfaces for the purposes of
      removing dust, dirt, mold, asbestos, lead and
other undesired particulate environmental contaminants.
What standard exist related to testing and
     certification of HEPA devices?
           3. Filter Testing and Certification Standards

1. ASTM F1471 - 09 Standard Test Method for Air Cleaning
 Performance of a High-Efficiency Particulate Air- Filter System.
2. ASHRAE Standard 52.2-2007 : Method of Testing General
  Ventilation Air-Cleaning Devices for Removal Efficiency by
  Particle Size
3. DOE-STD-3020-97 : Dept. of Energy, Specification for HEPA
   filters used by DOE Contractors
4. EN 1822-1:1998 : High efficiency air filters (HEPA and
   ULPA). Classification, performance testing, marking.
5. JIS Z 8909-1 Test method of filter media for dust collection.
What standard should PHEAF devices
          be tested to?
ASHRAE 52.2 - Method of Testing General
  Ventilation Air-Cleaning Devices for
  Removal Efficiency by Particle Size

    THIS IS THE STANDARD THAT
    ESTABLISHES MERV RATINGS
          FOR AIR FILTERS
        MERV RATINGS

Minimum Efficiency Reporting Value

     (range from 1-16 and are
       measured in microns)
The PHEAF Device Standard uses
these ASHRAE MERV efficiencies
         to establish the
       in field testing and
        validation criteria
                    4. Terminology

 Class 5 device - A portable high efficiency air filtration
device that operates as a fully effective and functional air
  filter, meeting all the filter efficiency requirements of
                 a HEPA filter. (MERV 17)

    This class of PHEAF device shall be required for
       all work in hospitals, in other environments
     where the PHEAF device discharges into the
             general air space of the building

      (and for vacuums used outside containment
          for contaminants such as mercury?)
Class 4 device - A portable high efficiency air filtration
    device that operates at a level equivalent to a
                  99% efficient filter.

   This class of PHEAF device shall be required for
         all work in commercial buildings or in
    other environments where the unit discharges
            into the air space of the building

      (and for vacuums used outside containment
    for contaminants such as mold and asbestos?)
 Class 3 device - A portable high efficiency air filtration
     device that operates at a level equivalent to
       a MERV 16 filter. (Approx 95% efficient)

      This class of PHEAF device can be used for
       environmental contaminant filtering and/or
           air scrubbing within a containment,
provided the containment is under negative pressure and
               discharges to the outside air.
Class 2 device - A portable high efficiency air filtration
    device that operates at a level equivalent to
      a MERV 15 filter. (Approx 90% efficient)

      This class of PHEAF device shall be the
          minimum class that is required for
   portable vacuums that can be used to clean up
   small, uncontained mold or asbestos releases.
Class 1 device - A portable high efficiency air filtration
    device that operates at a level equivalent to
                  a MERV 14 filter.

    This class of PHEAF device can be used for
        environmental filtering / air scrubbing,
   within a containment, provided the containment
     is under negative pressure and discharges
                   to the outside air.
  Class 0 device - A portable high efficiency air filtration
      device that operates at a level equivalent to
                    a MERV 13 filter.

This class of PHEAF device can be used to provide general
           exhaust or negative pressure within a
   contained area when it discharges to the outside air.

This class of portable hand vacuums can discharge into a
   contained area that is under negative pressure and
from which the air is exhausted to outside of the building.
      Table # 1 : Device Classification by Percent Reduction of
     Incoming versus Discharge Particle Counts by Particle Size

Classification       Class 5 Class 4 Class 3 Class 2 Class 1 Class 0
MERV *                17      NA      16       15      14     13

Particle size      MINIMUM MEASURED PERCENT FILTER EFFICIENCY
(in microns)

     0.3                99.97     99        95        85        75         75
     0.5                99.97     99        95        90        80         75
     0.7                99.97     99        95        90        85         75
     1.0                99.97     99        95        90        90         80
     2.0                99.97     99        95        90        90         85
     3.0                99.97     99        95        90        90         90
     5.0                99.97     99        99        90        90         90
    10.0                99.97     99        99        90        90         90


    *This table is based on ratings interpolated from ASHRAE 52.2 -2007 MERV for air filters.
GRAPH 1.
I. Reporting and Determining Efficiency Class

     The percent efficiency for each particle size range
       for the unit shall be compared to the percent
      removal efficiencies in Table 1 or Graph 1 and
            recorded on the form in Appendix A.

        A data point that falls between two classes
        should be rounded down to the lower class.

           The lowest class recorded for all the
            size ranges measured will be the
          designated efficiency class for the unit.
H. Calculation and Interpreting of Results

Test measurement data shall be recorded on the form
in Appendix A. The percent particle count reduction
(percent efficiency) for each particle size range shall be
calculated using the equation below and also recorded
on this form.

     Discharge particle concentration
1-   __________________________         x 100 = % reduction in particle
     Incoming particle concentration               size concentration
                                  APPENDIX A

                  PHEAF Device Testing Data Collection Form


                                  Device Data

Device Description ___________________________ Mfgr _____________________

Unit ID # __________________ Owner ____________________________________

Other Info _____________________________________________________________


                                 Test Event Data

Date _____________________ Test Administrator ___________________________

Location of Test ________________________ Temperature _______ RH _______

Particle Counter Model # ___________ Particle Counter Mfgr. __________________

Date of Calibration ____________________ Method __________________________


                       Background Airborne Particle Data

                   Size range     Test 1 Test 2 Test 3 Average (Bave)
                 (in microns)    (B1) (B2)     (B3)   (B1 + B2 + B3 / 3)

          0.3      ___________    ___________      ___________   ___________

          0.5      ___________    ___________      ___________   ___________

          1.0      ___________    ___________      ___________   ___________

          2.0      ___________    ___________      ___________   ___________

          5.0      ___________    ___________      ___________   ___________

          10.0     ___________    ___________      ___________   ___________
                               Test Results at Exhaust of Unit

                         Size range      Test 1 Test 2 Test 3 Average (Tave)
                       (in microns)     (T1) (T2)     (T3)   (T1 + T2 + T3 / 3)

                0.3      ___________     ___________      ___________     ___________

                0.5      ___________     ___________      ___________     ___________

                1.0      ___________     ___________      ___________     ___________

                2.0      ___________     ___________      ___________     ___________

                5.0      ___________     ___________      ___________     ___________

                10.0     ___________     ___________      ___________     ___________


                                        Unit Evaluation

               Size range     Background    Unit Test       Efficiency          Maximum
        (in microns)    Ave. (Bave)    Ave. (Tave)    1-(Tave/Bavex100)          Class Rating*

                0.3      ___________     ___________      ___________     ___________

                0.5      ___________     ___________      ___________     ___________

                1.0      ___________     ___________      ___________     ___________

                2.0      ___________     ___________      ___________     ___________

                5.0      ___________     ___________      ___________     ___________

                10.0     ___________     ___________      ___________     ___________

* See Table 1 or Graph 1 for Minimum Particle Efficiencies for Different Classes of Portable High
 Efficiency Air Filtration Devices (Round down to lower class when data is between two classes)

      Overall Classification of Device (minimum rating above) __________________

        Comments ______________________________________________________
However, a rating under this
method may not be the same
  as the aerosol method.
STANDARDS FOR TESTING HEPA FILTERS

Standard        Challenge Concentration

Aerosol Equip.  100 µg/l     100 mg/m3
ASHRAE 52.2 16.3 x 109 p/ft3 70 mg/m3
 ASTM F1471   7.0 x 109 p/ft3 30 mg/m3
EU 1822        3.52 x 107 p/ft3 0.15 mg/m3
    STANDARDS FOR TESTING HEPA FILTERS

Standard          Acceptable Leakage
                  (1- 99.97%= 0.03%)

Aerosol Equip.                    0.03 µg/m3
ASHRAE 52.2 4.89 x 105 p/ft3 0.021 µg/m3
ASTM F1471    2.1 x 105 p/ft3 0.009 µg/m3
EU 1822          1.05 x 103 p/ft3 0.00045 µg/m3
Consultants in Northern California
  in the San Francisco Bay area
       have been specifying
        mandatory testing
         of PHEAF devices
    (using aerosol generation)
 on asbestos abatement projects
       for the past 3 years.
TYPICAL TESTING RESULTS
 IF YOUR EQUIPMENT FAILS

 • a leak in the seal against the filter housing
      (bead of silicone caulk can often fix it)
• physically-damaged HEPA filter - small hole
        (dab of silicone caulk can fill it)
   • degraded HEPA filter (oil mist suspect)
      (may have to replace the HEPA filter)
• there may be a design flaw in the equipment
QUESTIONS ?

And Hands-On
  Exercise