12 - TXDOT LOCAL GOVERNMENT PROJECTS QUALITY ASSURANCE PROGRAM

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SECTION 9 - FREQUENCY FOR SYSTEM APPROACH INDEPENDENT ASSURANCE TESTING 9.1 Overview The system approach for Independent Assurance (IA) requires IA activities to occur on a time basis, as opposed to occurring on a quantity of material or project basis. 9.2 Required Frequencies and Activities The following frequencies and activities are required for evaluating sampling and testing personnel and equipment under the system approach to IA. TIME ACTIVITY Prior to performing acceptance sampling Qualification is required under the "Sampling and and testing Testing Personnel Qualification Program" and the "Laboratory Qualification Program" Within 12 months after Observation and Each qualified technician is required to participate Qualification in one proficiency or split sample test for each test method requiring IA. Results must compare to the IA test results to within the established tolerance. Within 24 months after Observation and Each qualified technician is required to participate Qualification in one proficiency or split sample test for each test method requiring IA. Results must compare to the IA test results to within the established tolerance. Within 36 months of qualification Qualification is again required under the "Sampling and Testing Personnel Qualification Program and the "Laboratory Qualification Program" NOTE: For American Concrete Institute (ACI) certification, Field Technician Grade I, the above frequency is extended to five years. Maintaining technician qualification under the IA systems approach requires continuation of the above cycle of qualification and successful split or proficiency sample testing.