Radon Practice Exam Questions and Answers Already Passed

Radon Practice Exam Questions and Answers Already Passed If you own multiple continuous Radon monitors, at what frequency should a source check take place? 6 months Radon gas will pass through most filters. True The basic parts of an atom are: neutron, proton, electron What passive device is most adversely affected by humidity? Open Faced Charcoal The EPA says that most homes can be reduced to 2.0 pCi/l or less. True Detectors should be placed 1. ___________ inch/inches from the floor 2. ___________ foot/feet from an exterior wall 3.____________ foot/feet from the ceiling 4.____________ foot/feet from an exterior opening 5. No more than ____________ foot/feet off the floor 20 1 1 3 8 According to national measurement protocols, enclosed bathrooms, kitchens, and garages are acceptable places to test in a pinch. False What is the average annual Radon concentration in homes in the U.S., according to the EPA? 1.3 What is a Curie? Radioactive decays from one gram of Radium A crawlspace would most likely see a reduction in radon levels above from which type of mitigation technique? sub membrane depressurization Depressurizing drain tile found beneath a basement slab can be an effective mitigation technique? True, as long as it does not represent a short circuit or hinder water drainage What typically causes the greatest amount of radon entry into U.S. homes annually? stack effect In most cases, a long term test gives a better indication of the annual average. True What type of quality control test is used to check and evaluate the accuracy of passive measurement devices? spiked measurements Electret Ion Chambers measure Radon levels from what? A drop in charge on the plate from ions created in the chamber What is the term that describes two measurements made at the same time and in the same location or side-by-side? duplicate measurements What is radon's atomic mass (how much does it "weigh")? 222 Primary tobacco smoking is still the greatest risk of contracting lung cancer. true Which measurement should be used for a mitigation decision if an initial short term test showed 6.7 pCi/l and a follow up short term test showed 5.4 pCi/l? 6.1 After the mitigation system begins operating, a post-mitigation measurement should be initiated within what period 24 hours and 30 days A routine instrument check should be performed as frequently as possible true Typically, sealing cracks like a perimeter slab/wall joint, improves sub slab depressurization systems. true Your best course of action is to reduce tampering is: implement measures and communications to both discourage and detect tampering Which room will have the lowest equilibrium ratio? A room with air filtration and circulation According to the Citizens Guide or extended testing protocol, which of the following is correct for performing an initial short term test? single device in the lowest lived in level Typically, when is the stack effect greatest? During the heating season Which of the following testing procedures is recommended by the EPA for people not selling a home? conduct an initial test, and then do a follow-up