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EPA Protocol Calibration
7.1.5. CALIBRATION FREQUENCY
No later than three months after the most recent calibration or performance audit to indicate
an acceptable analyzer calibration.
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.
7.1.6. RECORD KEEPING
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?
7.1.7. SUMMARY OF QUALITY ASSURANCE CHECKS
CHARACTERISTIC
Shelter temperature
Sample introduction
system
Recorder
200
To ensure accurate measurements of the SO
time of installation, and re-calibrate it:
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.
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:
The following items should be checked on a regularly scheduled basis to assure high
quality data from the T100. Refer to Table 7-3 for a summary of activities. Also the QA
Handbook should be checked for specific procedures.
Table 7-3: Activity Matrix for Quality Assurance Checks
ACCEPTANCE LIMITS
Mean temperature between
o
o
o
22
C and 28
C (72
and
o
82
F), daily fluctuations not
o
greater than ±2
C
No moisture, foreign
material, leaks, obstructions;
sample line connected to
manifold
Adequate ink & paper
Legible ink traces
Correct chart speed and
range
Correct time
Teledyne ML - T100 UV Fluorescence SO2 Analyzer
concentrations, calibrate the analyzer at the
2
FREQUENCY AND METHOD OF
MEASUREMENT
Check thermograph chart
weekly for variations greater
o
o
than ±2
C (4
F)
Weekly visual inspection
Weekly visual inspection
06807A(DCNxxxx)
ACTION IF REQUIREMENTS ARE
NOT MET
Mark strip chart for the affected
time period
Repair or adjust temperature
control
Clean, repair, or replace as
needed
Replenish ink and paper supply
Adjust time to agree with clock;
note on chart
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