3 - Quality Assurance Flashcards
(27 cards)
What 2 statements best define quality from customers perspective
Consistent and Fit for purpose
T/F Quality assurance is standard method of operation in the UK
True
What 3 statements apply to quality assurance
Monitoring process using NIR
Testing at time of production
Testing carries out by production staff
What 2 statements apply to quality control
Samples tested during the day by lab staff
A lot of production is produced before the product is found to be out of spec
T/F Quality assurance produces more rework than quality control
False
T/F Wheat samples are taken from one point from bulk load
False
What does quality assurance involve
Getting things right as early in the process as possible
Testing at time of production
Making products right in the first place - reducing need for rework
Monitoring and controlling the process rather than sampling end product
Testing carried out by millers
Use of NIR so testing is done quickly and in real time
What does quality control involve
Testing the finished product after they have been made, passing those samples which conform and rejecting those which do not
What are the disadvantages of quality control
Passive detection of failures
After the event - tonnes produced before knowing its out of spec
Can be costly due to rework
Involves a sampling regime
Testing carried out by staff who are not responsible for producing the product
What 2 statements are true of good sampling practice, the sample should be…
Homogeneous
Representative of whole
what 3 things must a sample be
Tested asap
Stored carefully in air-tight containers
Labelled clearly
Which statements are true for routine checking of equipment accuracy during production
Plot results on control graph
Test known samples daily
Which 3 statements identify key factors for accurate calibration
Requires a range of representative samples
Documented changes based on statistics
Accredited laboratories carry out the tests
Key factors of calibration
Samples are tested by 2 methods closely in time
Sufficient number of samples are used to create or check calibration
Range of values for samples must be representative across full range of results likely to be seen in normal testing
Any alterations to calibration must be fully documented and made of basis of statistical proof that change is necessary
Reference methods must be carried out by competent laboratory
How do you ensure that all operators are doing the test in the same way
Clear written methods readily understood and available
Adequate staff training so it is understood how to do the test, why its done, and what might affect results
Checks to see if there are operator differences and thorough investigation of any which occur
What does internal monitoring involve
Testing standard or control samples at start of every run, day or shift
Performing diagnostic checks on electronic equipment to achieve standard values
Checking for operator differences
T/F High standard deviation represents a consistent flour
False
Label a standard deviation curve
T/F The product specification variability should be less than the variability of the test method
False
When might you carry out protein testing
Wheat intake
Feed to 1st break
Laboratory staff should be … and …
Well trained and competent
Laboratory equipment needs to be checked routinely to ensure it is working …
Accurately
Samples must be labelled clearly to avoid … and to maintain …
Ambiguity error
Traceability
How frequently should quick tests occur
1-2 hours
