EPA LEAD INSPECTOR ACTUAL PAPER
SOLVED QUESTIONS
◉ Explain ALARA
Answer: As Low As Reasonably Achievable
◉ *What are the three major considerations for radiation safety?
Answer: 1. Time
2. Distance
3. Shielding
◉ What is used to monitor radiation on an inspector?
Answer: Dosimeter ring or badge
◉ What is a leak test and how often should it be performed?
Answer: Wiping the bezel of the instrument, either 6 months to
once a year
◉ What must the inspector do if the XRF cannot perform an
accurate measurement?
Answer: Calibration check
◉ *What is a performance characteristic sheet?
, Answer: Provides detailed information on specific XRF by
manufacture. How it works, how to calibrate it. etc
◉ When choosing a location for performing a substrate
correction, the initial XRF reading should be less
than________________________________
Answer: 2.5
◉ Difference between accuracy, precision and bias
Answer: Accuracy- true value
Precision- range
Bias- difference between accuracy and precision
◉ What is an SRM? which film is closest to federal standard for
LBP
Answer: SRM- Standard reference material
Red film
◉ Procedure for calibration check and how often should it be
performed?
Answer: 3 shots on standard NIST value
Before inspection
every 4 hours
and at the end of inspection
SOLVED QUESTIONS
◉ Explain ALARA
Answer: As Low As Reasonably Achievable
◉ *What are the three major considerations for radiation safety?
Answer: 1. Time
2. Distance
3. Shielding
◉ What is used to monitor radiation on an inspector?
Answer: Dosimeter ring or badge
◉ What is a leak test and how often should it be performed?
Answer: Wiping the bezel of the instrument, either 6 months to
once a year
◉ What must the inspector do if the XRF cannot perform an
accurate measurement?
Answer: Calibration check
◉ *What is a performance characteristic sheet?
, Answer: Provides detailed information on specific XRF by
manufacture. How it works, how to calibrate it. etc
◉ When choosing a location for performing a substrate
correction, the initial XRF reading should be less
than________________________________
Answer: 2.5
◉ Difference between accuracy, precision and bias
Answer: Accuracy- true value
Precision- range
Bias- difference between accuracy and precision
◉ What is an SRM? which film is closest to federal standard for
LBP
Answer: SRM- Standard reference material
Red film
◉ Procedure for calibration check and how often should it be
performed?
Answer: 3 shots on standard NIST value
Before inspection
every 4 hours
and at the end of inspection
