2.02
Damaged or deteriorated materials may not be used and must be promptly removed from
the premises. Material which becomes contaminated with asbestos-containing material
shall be packaged and legally disposed of in an approved, secure landfill.
All materials, tools, and equipment must comply, at a minimum, with this Specification,
and relevant federal, state, and local codes.
MATERIALS, TOOLS, AND EQUIPMENT
Negative Air Machines: Supply the required number of asbestos air filtration units to
the site in accordance with these Specifications. Each unit shall include the following:
1.
Cabinet: Constructed of steel or other durable materials able to withstand damage
from rough handling and transportation. The width of the cabinet should be less
than 30 inches to fit through standard-size doorways. Cabinet shall be factory
sealed to prevent asbestos-containing dust from being released during use,
transport, or maintenance. Access to and replacement of all air filters shall be
from intake end. Unit shall be mounted on casters or wheels.
Fans: Rate capacity of fan according to useable air-moving capacity under actual
operating conditions. Use centrifugal-type fan.
HEPA Filters: The final filter shall be the HEPA type. The filter media (folded
into closely pleated panels) must be completely sealed on all edges with a
structurally rigid frame.
a. A continuous rubber gasket shall be located between the filter and the
filter housing to form a tight seal.
b. Each filter shall be individually tested and certified by the manufacturer to
have an efficiency of not less than 99.97 percent when challenged with 0.3
mm dioctylphthalate (DOP) particles. Testing shall be in accordance with
Military Standard Number 282 and Army Instructions Manual 136-300-
175A. Each filter shall bear a UL586 label to indicate ability to perform
under specified conditions.
C. Each filter shall be marked with: the name of the manufacturer, serial
number, air flow rating, efficiency and resistance, and the direction of test
air flow.
Prefilters, which protect the final filter by removing the larger particles, are
required to prolong the operating life of the HEPA filter. Two stages of pre-
filtration are required. The first-stage prefilter shall be a low-efficiency type (e.g.,
for particles 10 Estaver(drlantemnediateyetttad shall
02111-23
