basics of quality assurance - amazon web...
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Basics of Quality Assurance
Todd ShieldsIndiana Department of Transportation
October 13, 2016
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Basic Concepts
• Components of a Quality Assurance program
• Who is responsible for what?
• Quality Control Plans
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What are we trying to achieve?
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Definitions
• All federal aid projects must comply with CFR 637.203, Quality Assurance Procedures for Construction
• State and Local Agencies should also have such policies in place for non-federal aid projects
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Quality Assurance
• All those planned and systematic actions necessary to provide confidence that a product or service will satisfy given requirements for quality
Owner?
Agency
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Quality Control
• All contractor/vendor operational techniques and activities that are performed or conducted to fulfill the contract requirements.
Owner?
Contractor
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Independent Assurance
• Activities that are an unbiased and independent evaluation of all the sampling and testing procedures used in the acceptance program.
Owner?
Agency
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Who “Owns” Quality?
Agg Supplier
EmulsionSupplier
Jobsite Contractor Constructs
• Up to this point, owner?
Contractor
Quality Control
Agency Role?
Oversee
Quality Assurance
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Who “Owns” Quality?
• Once project accepted
Agency OwnsConstruction
Complete
Agency Accepts
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What do we QA?
• Materials
– Aggregates
– Emulsions
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What do we QA?
• Application rates
– Mix designs!
• ETF Specs
– Equipment Calibration
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What do we QA?
• Final product????
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Quality Control Plans
• Each material supplier should have their own quality control plan
– And follow it
• Contractor should have a quality control plan
– Specific to each job
• Agencies may have guidelines
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Quality Control Plans
• Define QC Personnel
– QCP Manager
– QCP Site Manager
– QC Technician(s)
• Process Balance
• Equipment Utilized on Job
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Quality Control Plans
• Equipment Calibration Procedure
• Construction Sequence
• Control of Application Rates
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Quality Control Plans
• Procedure/schedule for sweeping
• Traffic Control
– Methods
– Special Considerations (i.e. intersections)
– Determination of opening to traffic
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Quality Control Plans
• Material Sampling/Testing
– Response to results
• Documentation
– How long to maintain records
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QUIZ!!
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The agency inspector takes a random aggregate sample to check gradation. This is an example of:
A. Quality Control
B. Quality Assurance
C. Independent Assurance
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B. Quality Assurance
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The contractor performs a yield calculation to ensure his application rate is correct. This is an example of:
A. Quality Control
B. Quality Assurance
C. Independent Assurance
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A. Quality Control
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The flagger behind the chip seal operation notes excessive aggregate pickup on passing vehicles.
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The contractor’s response would be to…
A. Ask the agency to perform a QA test on the emulsion
B. Increase the aggregate application rate
C. Stop operations, stabilize and assess the situation, per the QC plan
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C. Stop operations, stabilize and assess the situation, per the QC plan
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Remember the goal
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So how do we get there?
• Good specifications
• Good designs
• Qualified personnel
– Contractor – actually running the equipment
– Agency – overseeing and accepting
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Questions???
Todd Shields, P.E.Maintenance Field Support Mgr.Indiana Dept. of Transportation
[email protected](317) 233-4726