(2) External temperature for fan and motor bearings on
ventilation equipment.
b.
Record barometric pressure and altitude.
3.2.3
System Markings
Mark the settings and test ports to re-evaluate the industrial ventilation
system during follow-up tests. Label test points before submitting the
report. Use spray paint or another acceptable practice, i.e. permanent
marker, to mark the airflow adjusting devices [such as valves, splitters,
dampers, and blast gates], so the devices can be returned to their original
position if an unauthorized adjustment is made.
3.2.4
Test Verification
Notify Contracting Officer [30] [_____] calendar days prior to conducting
the Test Verification. In the presence of the Contracting Officer, the
test engineer shall repeat at least [10] [20] [_____] percent of the test
for each replacement and exhaust air system to verify the results. As a
minimum, re-test the following readings:
a.
Total volume flow for each fan;
b.
Inlet and outlet static pressure for each fan;
c.
Volume flow and hood static pressure for the hood with the longest
duct run from the exhaust fan; [and]
d.
Hood volume flow rates and total system volume flow rates which
disagree with the design value; [and]
[e.
Differential pressure across each air pollution control device].
3.2.4.1
Test Result Disagreements
Static and velocity pressure test readings shall be within plus or minus
[10] [_____] percent of the verification readings. When the difference
between test and verification readings are greater than these acceptable
values, the test engineer shall:
a.
Recalculate the test and verification results.
b.
Recalibrate test equipment.
c.
Retest the entire system.
d.
Verify the results
3.2.5
Test Engineers Out-Brief
Provide a verbal summary for the Contracting Officer describing the
condition of the industrial ventilation system. Report test data that does
not meet the design criteria as defined in paragraph entitled "Field Test
Reports."
3.3
SCHEDULE
Some metric measurements in this section are based on mathematical
SECTION 15951N
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