AMRT MAIN QUESTIONS AND ANSWERS SET A+
✔✔A __________________ air pressure differential between the work area and the
surrounding space should be created to prevent contaminants from leaving the work
zone. -✔✔negative
✔✔A(n) _____________________ should be constructed for entry into and exit from a
remediation containment area. -✔✔exit chamber
✔✔What is the desired lower pressure to achieve & maintain inside the containment
chamber? -✔✔-5 to -8 pascals
✔✔What are the risks of using spray adhesive? -✔✔flammable & toxic
✔✔Why should a technician use a fire retardant polyethylene for containment? -✔✔will
not raise the fire load
✔✔What is the slip factor recommended for 6 mil poly and why? -✔✔medium - no oil or
talc
✔✔What is the goal for mold remediation? -✔✔return to Condition 1
✔✔Condition 1 -✔✔normal/acceptable
✔✔Condition 2 -✔✔contaminated with settled spores
✔✔Condition 3 -✔✔visible contamination
✔✔What are the 3 types of containment? -✔✔source, local, full
✔✔What are the 5 principles of mold remediation stated in the S520? -✔✔1) Provide for
health and safety of workers and occupants 2) document conditions and work
, processes 3) control the contaminant at the source 4) physically remove the
contamination 5) correct the moisture problem to prevent recontamination
✔✔When is source containment used -✔✔small amounts
✔✔When is local containment used -✔✔moderate amounts
✔✔When is full containment used? -✔✔significant amounts
✔✔How is the number of decon/exit chambers for a mold remediation project
determined? -✔✔job & site specific
✔✔What are 3 ways to evaluate negative pressure? -✔✔visual, smoke tube,
manometer
✔✔What are the factors determining the maximum pressure that a containment
chamber can be placed under? -✔✔1) size 2) strength 3) integrity 4) 5)
✔✔What should the remediation contractor provide on every remediation job rather than
relying on the homeowner to provide them? -✔✔carbon monoxide detector
✔✔What is the recommended procedure for changing the pre-filters on a HEPA filtration
device? -✔✔remove while AFD is running
✔✔Air flow ALWAYS moves from ____________ to _________________ -✔✔higher
pressure to lower pressure
✔✔What is the efficiency of a HEPA filter, and what do the letters stand for? -
✔✔99.97% at 0.3 microns; High Efficiency Particulate Air
✔✔What size mold spores should a good secondary filter remove? -✔✔1 micron @
60% efficiency
✔✔Formula for Air Changes per Hour -✔✔(CFM x 60)/CF
✔✔Formula for Cubic Feet per Minute required for a given number of ACH -✔✔(CF x
ACH) /60
✔✔Formula for Number of AFD units -✔✔(CF x ACH) /60 = CFM req.
THEN
CFM req/CFM of Machine
✔✔A __________________ air pressure differential between the work area and the
surrounding space should be created to prevent contaminants from leaving the work
zone. -✔✔negative
✔✔A(n) _____________________ should be constructed for entry into and exit from a
remediation containment area. -✔✔exit chamber
✔✔What is the desired lower pressure to achieve & maintain inside the containment
chamber? -✔✔-5 to -8 pascals
✔✔What are the risks of using spray adhesive? -✔✔flammable & toxic
✔✔Why should a technician use a fire retardant polyethylene for containment? -✔✔will
not raise the fire load
✔✔What is the slip factor recommended for 6 mil poly and why? -✔✔medium - no oil or
talc
✔✔What is the goal for mold remediation? -✔✔return to Condition 1
✔✔Condition 1 -✔✔normal/acceptable
✔✔Condition 2 -✔✔contaminated with settled spores
✔✔Condition 3 -✔✔visible contamination
✔✔What are the 3 types of containment? -✔✔source, local, full
✔✔What are the 5 principles of mold remediation stated in the S520? -✔✔1) Provide for
health and safety of workers and occupants 2) document conditions and work
, processes 3) control the contaminant at the source 4) physically remove the
contamination 5) correct the moisture problem to prevent recontamination
✔✔When is source containment used -✔✔small amounts
✔✔When is local containment used -✔✔moderate amounts
✔✔When is full containment used? -✔✔significant amounts
✔✔How is the number of decon/exit chambers for a mold remediation project
determined? -✔✔job & site specific
✔✔What are 3 ways to evaluate negative pressure? -✔✔visual, smoke tube,
manometer
✔✔What are the factors determining the maximum pressure that a containment
chamber can be placed under? -✔✔1) size 2) strength 3) integrity 4) 5)
✔✔What should the remediation contractor provide on every remediation job rather than
relying on the homeowner to provide them? -✔✔carbon monoxide detector
✔✔What is the recommended procedure for changing the pre-filters on a HEPA filtration
device? -✔✔remove while AFD is running
✔✔Air flow ALWAYS moves from ____________ to _________________ -✔✔higher
pressure to lower pressure
✔✔What is the efficiency of a HEPA filter, and what do the letters stand for? -
✔✔99.97% at 0.3 microns; High Efficiency Particulate Air
✔✔What size mold spores should a good secondary filter remove? -✔✔1 micron @
60% efficiency
✔✔Formula for Air Changes per Hour -✔✔(CFM x 60)/CF
✔✔Formula for Cubic Feet per Minute required for a given number of ACH -✔✔(CF x
ACH) /60
✔✔Formula for Number of AFD units -✔✔(CF x ACH) /60 = CFM req.
THEN
CFM req/CFM of Machine
