Teledyne T101, Operation Manual, Page: 194 / 375

EPA Protocol Calibration Teledyne ML – T101 Operation Manual
190
7.1.5. CALIBRATION FREQUENCY
To ensure accurate measurements of the SO
2
concentrations, calibrate the analyzer at the
time of installation, and re-calibrate it:
•
No later than three months after the most recent calibration
or performance audit that indicated that the analyzer
calibration was found to be acceptable.
• An interruption of more than a few days in analyzer
operation.
• Any repairs which might affect its calibration.
• Physical relocation of the analyzer.
• Any other indication (including excessive zero or span drift)
of possible significant inaccuracy of the analyzer.
Following any of the activities listed above, the zero and span should be checked to
determine if a calibration is necessary. If the analyzer zero and span drifts exceed locally
established calibration units or the calibration limits in Section 2.0.9, Subsection 9.1.3
(Q.A. Handbook), a calibration should be performed.
7.1.6. RECORD KEEPING
Record keeping is a critical part of all quality assurance programs. Standard forms similar
to those that appear in this manual should be developed for individual programs. Three
things to consider in the development of record forms are:
• Does the form serve a necessary function?
• Is the documentation complete?
• Will the forms be filed in such a manner that they can easily
be retrieved when needed?