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International Standards of Practice for Inspecting Radon-Mitigation Systems - InterNACHI.org Mobile App

This informational app contains information on the international standards for inspecting radon-mitigation systems. The app also includes terminology and goals of the inspection and is intended to help inspectors before conduction inspections.

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Take a peek inside the International Standards of Practice for Inspecting Radon-Mitigation Systems - InterNACHI.org Mobile App

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    18.1 About Radon and These Standards for Inspecting Radon-Mitigation Systems

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    Radon is a radioactive gas that has been found in homes, schools and buildings around the world.

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    Although this Standard applies to both commercial and residential radon-mitigation systems, this ...

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    18.2 Purpose

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    The purpose of this document is to establish international standards for the inspection of radon-...

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    18.3 Definitions

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    18.3.1 Radon-Mitigation System-Specific Definitions

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    * active soil-depressurization system: one or more of the following types of radon-mitigation sy...

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    * crawlspace depressurization: an active radon-mitigation system that lowers the air pressure in...

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    * defect: a condition of a radon-mitigation system that may have an adverse impact on its perfor...

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    * depressurization: a negative pressure created in one area compared to an adjacent area.

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    * discharge: the end of a vent stack pipe open to outside air.

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    * drain-tile depressurization: an active soil-depressurization system whereby a suction point is...

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    * heat-recovery ventilation (HRV) system: a system that lowers radon levels by using outside air...

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    * hollow-block wall depressurization: an active radon-mitigation system that depressurizes the o...

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    * inspection: a non-invasive, visual examination of a radon-mitigation system.

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    * manifold pipe: pipe between a vent stack pipe and suction-point pipe with two or more suction ...

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    * radon-mitigation system: any system designed to reduce the radon concentrations of indoor air.

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    * radon system piping: the piping of a passive or active radon-mitigation system that is compose...

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    * readily accessible: a system or component that is, in the judgment of the inspector, capable o...

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    * sub-membrane depressurization: an active radon-mitigation system creating low air pressure un...

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    * sub-slab depressurization (active): a radon-mitigation system that creates low air pressure un...

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    * sub-slab depressurization (passive): a radon-mitigation system that creates low air pressure u...

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    * suction point: the end of a radon-mitigation system that penetrates the slab, wall, vapor barr...

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    * sump (pit) depressurization system (active): a radon-mitigation system that has a suction poin...

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    * vent stack pipe: pipe leading from the suction point (in a system with a single suction point)...

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    18.3.2 Terminology Commonly Found in Commercial Property Inspection Reports

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