Radon Mitigation >> Radon Poisoning Symptoms

Mechanical radon mitigation system monitors, such as manometer type pressure gauges, shall be clearly marked to indicate the range or zone of pressure readings that existed when the system was initially activated. A system description label shall be placed on the mitigation system, the electric service entrance panel, or Radon Poisoning Symptoms other prominent location. 

This label shall be legible from a distance of at least three feet and include the following information: "radon Reduction System," the installer's name, phone number, Radon Poisoning Symptoms and RCP Identification Number, the date of installation, and an advisory that the building should be tested for radon at least every two years or as required or recommended by state or local agencies. 

In addition, Radon Poisoning Symptoms all exposed and visible interior radon mitigation system vent pipe sections shall be identified with at least one label on each floor level. The label shall read, "radon Reduction System." 16 16.5 The circuit breakers controlling the circuits on which the radon vent fan and system failure warning devices operate shall be labeled "radon System." 

POST-MITIGATION TESTING 17.1 After installation of an active radon control system (e.g., SSD), the contractor shall re-examine and Radon Poisoning Symptoms verify the integrity of the fan mounting seals and all joints in the interior vent piping. 17.2 After installation of any active radon mitigation system, the contractor shall measure suctions or flows in system piping or ducting to assure that the system is operating as designed. 

When SSD systems are installed and activated, a test of pressure field extension is a good practice, particularly when there is uncertainty regarding the permeability of materials under all parts of the slab.) 17.3 Immediately after installation and Radon Poisoning Symptoms activation of any active (fan-powered) sub- slab depressurization or block wall depressurization system in buildings containing natural draft combustion appliances, the building shall be tested for backdrafting of those appliances. 

Backdrafting condition that results from installation of the radon mitigation system shall be corrected before the system is placed in operation. (Procedures and Radon Poisoning Symptoms a checklist for conducting backdrafting tests are covered in the reference documents listed in paragraphs 8.9, 8.10, and 8.11, and in paragraph 11.3.) 

Upon completion of radon mitigation work, Radon Poisoning Symptomsa test of mitigation system effectiveness shall be conducted using an RMP listed test device and in accordance with EPA testing protocols or state requirements. This test should be conducted no sooner than 24 hours nor later than 30 days following completion and activation of the mitigation system(s). 

This test may be conducted by the contractor, by the client, or by a third party testing firm. If this test is conducted by the mitigation contractor, and the test results are accepted by the client as satisfactory evidence of system effectiveness, further post-mitigation testing is not required. However, to avoid the appearance of conflict of interest, Radon Poisoning Symptoms the contractor shall recommend to the client that a mitigation system effectiveness test be conducted by an independent RMP listed or state certified testing firm or by the client. 

The contractor should request a copy of the report of any post-mitigation testing conducted by the client or by an independent testing firm. 17.5 To ensure continued effectiveness of the radon mitigation system(s) installed, Radon Poisoning Symptoms the contractor shall advise the client to retest the building at least every two years or as required or recommended by state or local authority. 

Retesting is also recommended if the building undergoes significant alteration. AND 18.0 CONTRACTS DOCUMENTATION 18.1 EPA recommends that contractors provide the following written Radon Poisoning Symptoms information to clients prior to initiation of work:

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