WI Lead Risk Assessor Exam (2025) COMPLETE
EXAM SET (QUESTIONS AND VERIFIED ANSWERS)
FREQUENTLY MOST TESTED QUESTIONS |
ALREADY PASSED!!
What type of investigations can Lead risk assessor do - ✔✔- clearances
- full inspection
- lead partial inspection
- lead-free inspections
- EBL
- Hazard Screening
- Lead-safe Investigations
How often should a leak/wipe test be done, and why? - ✔✔every 6 months - this checks to
see if there are leaks in the radioactive source shield
How often should you calibrate the XRF machine? - ✔✔At the beginning, every fours, and at
the end
NIST - ✔✔(National Institute of Standards and Technology)
Set the SRM
Performance Characteristic Sheet (PCS) - ✔✔Provides important information on how to use
the specific XRF
SRM - ✔✔(Standard Reference Material) closest to 1.0 mg/cm2 and used to calibrate the
machine
, Should have calibration range (first and second reading) between 0.8 - 1.2 mg/cm2 (+/- 0.2
mg/cm2) for Heuresis model. Each model is different. If out of range then should not use the
samples taken.
substrate bias/correction - ✔✔what's below the paint
Newer machines do not need to substrate correction
Take apparent lead concentration (APL) - substrate equivalent lead (SEL) = corrected lead
concentration
APL - SEL = corrected lead concentration
Older machines would have inconclusive ranges for certain substrates (in PCS). If your sample
falls in between the inconclusive range then you will have to take a paint chip sample, or
assume it is lead paint.
6 substrates - ✔✔Brick, concrete, drywall, metal, plaster, and wood
What is Badge/Ring/badge? How often send to lab? What type of exposure does it measure? -
✔✔Warn to measure radiation exposure.
Recommended every 3 months to send into the lab to monitor exposure
This measures chronic exposure NOT acute exposure
Substrate - ✔✔material underneath paint
Room equivalent - ✔✔not always just a room, can be a house exterior, foyer, staircase,
hallway, kitchen, etc.
Building component type - ✔✔doors, windows, walls, and so on that are repeated in more
than one room equivalent in a unit and have a common substrate
EXAM SET (QUESTIONS AND VERIFIED ANSWERS)
FREQUENTLY MOST TESTED QUESTIONS |
ALREADY PASSED!!
What type of investigations can Lead risk assessor do - ✔✔- clearances
- full inspection
- lead partial inspection
- lead-free inspections
- EBL
- Hazard Screening
- Lead-safe Investigations
How often should a leak/wipe test be done, and why? - ✔✔every 6 months - this checks to
see if there are leaks in the radioactive source shield
How often should you calibrate the XRF machine? - ✔✔At the beginning, every fours, and at
the end
NIST - ✔✔(National Institute of Standards and Technology)
Set the SRM
Performance Characteristic Sheet (PCS) - ✔✔Provides important information on how to use
the specific XRF
SRM - ✔✔(Standard Reference Material) closest to 1.0 mg/cm2 and used to calibrate the
machine
, Should have calibration range (first and second reading) between 0.8 - 1.2 mg/cm2 (+/- 0.2
mg/cm2) for Heuresis model. Each model is different. If out of range then should not use the
samples taken.
substrate bias/correction - ✔✔what's below the paint
Newer machines do not need to substrate correction
Take apparent lead concentration (APL) - substrate equivalent lead (SEL) = corrected lead
concentration
APL - SEL = corrected lead concentration
Older machines would have inconclusive ranges for certain substrates (in PCS). If your sample
falls in between the inconclusive range then you will have to take a paint chip sample, or
assume it is lead paint.
6 substrates - ✔✔Brick, concrete, drywall, metal, plaster, and wood
What is Badge/Ring/badge? How often send to lab? What type of exposure does it measure? -
✔✔Warn to measure radiation exposure.
Recommended every 3 months to send into the lab to monitor exposure
This measures chronic exposure NOT acute exposure
Substrate - ✔✔material underneath paint
Room equivalent - ✔✔not always just a room, can be a house exterior, foyer, staircase,
hallway, kitchen, etc.
Building component type - ✔✔doors, windows, walls, and so on that are repeated in more
than one room equivalent in a unit and have a common substrate
