radon measurement 3

How soon after a soil gas mitigation system is installed can a post-mitigation test be started?

24 hours

According to the ANSI/AARST Protocol for measurements in homes, what is the minimum period that records regarding a radon measurement should be maintained?

6 years

how long should measurement records and reports be retained for worker exposure purposes?

6 years

When deploying side by side detectors, the maximum separation between devices should be:

8 inches

measurement professionals or organizations are not required to pass a performance test?

: A measurement professional who is placing devices analyzed by an independent certified laboratory

You arrive at a house to conduct a short-term radon test and find that the occupant has not closed doors and windows as previously instructed. Which of the following is an acceptable approach?

: Close doors and windows and deploy an activated charcoal device for 4 day

proper choice for locating a radon test device? a. Utility room having a sump b. In a crawlspace to get highest potential c. In a master bedroom on the third floor d. In a guest room in the lowest level of home

: In a guest room in the lowest level of home

which of the following devices should NOT be deployed in areas of high humidity?

Activated Charcoal

Appropriate discharge points of an active soil depressurization system is appropriate?

At least 10 feet above the ground and above the eave

According to the ANSI/AARST Protocol for measurements in homes, when deploying a test device that is designed to be suspended by a string or a pre-attached tape it should be:

Attached to the ceiling or a beam so it is at least 12 inches from the ceiling but no higher than 8 feet from the floor

When establishing closed house conditions, the occupant should

Be able to operate a clothes dryer

Which of the following is correct about performance tests? Select one: a. The average of three devices must be within 20 percent of the radon chamber value b. Each result and the average of all devices submitted must be within 25 percent of the chamber value c. All devices must be submitted to a performance test at the rate of 3/100 d. Performance tests are no longer required

Each result and the average of all devices submitted must be within 25 percent of the chamber value

which of the following should NOT be included in report to the client for a test conducted with a continuous monitor?

Excluded data at the beginning of the test to allow for device or home to come to equilibrium

when testing a newly constructed home, which of the following conditions would prevent you from initiating a short-term test?

Exterior door hardware has not been installed

According to the ANSI/AARST Protocol for measurements in homes, if a noninterference agreement has not been signed, the test is not a valid short-term test.

False

According to the ANSI/AARST Protocol for measurements in homes, if you are an AARST member or certified by the National Radon Safety Board you are exempted from needing a QA/QC plan.

False

when conducting a Time Sensitive Test, a window style air conditioner is to be shut off and covered.

False

How close to one another must two radon detectors be placed if they are to be considered collocated test devices for real estate testing?

No more than 8 inches apart

Duplicate measurements are made to provide an estimate of which type of error?

Precision

when testing homes with large areas like entertainment areas, one should:

Select multiple test locations at a rate of 1 test location per every 2,000 square feet

time frame of post-mitigation measurements in residential structures?

The home should be tested no sooner than 24 hours nor later than 30 days after the system has been installed

According to the ANSI/AARST Protocol for measurements in homes, an attic fan that removes hot air out of an attic can be operated during a Time Sensitive Testing Approach.

True

According to the ANSI/AARST Protocol for measurements in homes, equipment that supplies fresh outdoor air to the home are to be shut off.

True

According to the ANSI/AARST Protocol for measurements in homes, if air to air heat exchangers are not regularly used or maintained, they are to be shut off during short-term test.

True

According to the ANSI/AARST Protocol for measurements in homes, individuals who are deploying passive detectors such as activated charcoal from a certified lab are required to deploy duplicates and blanks as part of a Quality Control Plan.

True

when a post mitigation test is conducted in a home having a livable basement and an attached garage that has been retrofitted into a living space, how many test locations are suggested?

Two - one for the basement, and one for the slab-on-grade retrofitted garage area

Duplicate measurements are defined as two measurements made:

at the same time and side by side

You arrive at a home to perform a radon measurement with an electret ion chamber (EIC). Although you had informed the resident of the closed building conditions required for this test, you notice the windows on the first floor and the basement are open. According to Protocols, an appropriate action is to:

close all windows, explain closed building conditions again, and return to place the test device in 12 - 24 hours

Precision can best be determined by:

duplicate measurements.

Which of the following is an appropriate location for an active soil depressurization system fan?

outdoors

A routine instrument performance check of either a working level monitor (WLM) or a continuous radon monitor (CRM) should be performed:

prior to each measurement

Material appropriate for vent piping for an active soil depressurization style radon reduction system?

schedule 40 pvc

Spiked samples measure accuracy, while duplicates measure precision: true or false

true