WRT IICRC

WRT IICRC Questions And Verified Answers Carpet can be easily damaged while it is wet. If it delaminates the most likely solution is - Recommend removal and replacement Carpet seams should only be cut where necessary. What is one necessary reason for cutting seams in salvable carpet? - To remove carpet padding Desiccants remove water from the air using silica - True Drying a wet wall cavity by injecting air into it speeds - Evaporation HEPA stands for high efficiency particulate air - True If drywall ceiling are saturated and sagging, immediately remove and dispose of affected ceiling materials - True If the dew point changes, what 2 other humidity measurements change with it - Vapor pressure and humidity ratio If the GPP outside is higher than inside, the only drying system you can consider is - Closed drying If you cool the air down, but do not change the amount of humidity, what will the relative humidity do - Increase If you find mold growth, what equipment would you not install - Air movers If you heat the air up, but do not add anymore humidity to it, what will the relative humidity do - Decrease In order to use LGR dehumidification on a project that is 50 degrees inside, supplemental heaters will be needed - True LGR dehu work best in what temperature range? - 70-90 Measures how easily a vapor can pass through a material - Permeance Name 2 reasons why we should begin remediation as soon as possible - Reduce potential for microbial growth / reduce potential for damage Name 2 steps in minimizing particulate aerosolization - Pre cleaning / filtering the air On a project with 50 degree air inside, what type of dehumidifier could work? - Desiccant Outside a water damage project it is 30 degrees. Which dehu would benefit the most from that air? - LGR Prior to application of an antimicrobial, obtain authorization from the insurance adjuster - False Products that will reduce microorganisms to a level public agencies would consider safe are called - Sanitizers Reducing the amount of water vapor in the air is called - Dehumidification Reducing the humidity of the air is called dehumidification - True Refrigerant dehumidifiers remove water from the air through - Condensation The amount of moisture in a sample of air, compared to the maximum amount that air could have in it, is called - Relative humidity The only time you can consider open drying is when the GPP outside is higher than inside - False The rating for a hepa filter is - 99.97% at .3 microns To dry the subfloor underneath vinyl flooring, remove the vinyl - True Vapor pressure, like all other pressure seeks - Equilibrium Vinyl wall covering affects drying process because it is a vapor retarder - True Wet concrete can be dried by applying heat energy - True What antimicrobial provides the lowest level of microorganism reduction - Sanitizer What begins at 20% wood moisture content or above? - Wood rot fungi What can begin at 16% wood moisture content? - Non-destructive mold growth What category of water contains significant contamination and can make you sick - Cat 2 What category of water is from a sanitary source and not likely to make you sick - Cat 1 What is an IEP - Indoor Environmental Professional What is the measurable force that vapor creates on the things around it - Vapor pressure What is the temperature at which air reaches 100% relative humidity and condensation can occur - Dew point What is the weight of vapor in dry air called - Humidity ratio (grains per pound) What meter measures the number of particles in the air - Particle counter What piece of equipment specifically filters the air - Air filtration device (AFD) When drywall is saturated it gets very soft and it won't regai