MIL-HDBK-1110
Engineering Research Laboratory (Champaign, IL 61802,
1-800-USA-CERL) is available that will assist the inspector in
field inspection of latex and oil-based paints.
e) Count the cans of paint on the job site to
determine that a sufficient quantity is available to complete the
job as specified. For multi-component paints, confirm that the
proper ratio of materials for each specific coating is present.
To estimate the paint required for a job, use the nomograph
reproduced from a Naval Facilities Engineering Service Center
(Port Hueneme, CA 93043) Techdata Sheet shown in Figure 23.
f) Ensure that the paint is stored on site in an
approved building or area.
g)
Record number of cans and paint condition in record
book.
9.6.6
Measure Ambient Conditions. Most coating systems will
not dry or cure properly under extremes of temperature or
humidity, nor will they adhere well if applied over damp
surfaces. For example, specifications often require that the
substrate surface temperature be 5 degrees F above the dew point
and rising. For these reasons painting contracts have
requirements for air and surface temperature, dew point, and,
perhaps, additional environmental conditions. The paint
manufacturer's technical data sheet will also have limits for
acceptable environmental conditions. (If the limits are in
conflict, agreement on the limits should be reached during the
preconstruction conference.) Because temperature and dew point
may vary considerably within a small area, temperature and dew
point should be measured in the immediate vicinity of the work
being done. Surfaces being painted may be colder than the
atmospheric temperature and their temperatures should be measured
in addition to atmospheric temperatures. Dew point at the
surface being painted may also be different from that in the air
away from the surface. Thus, dew point should be measured near
the surface. Ambient condition measurements should be made about
every 4 hours. These times should include before start of job,
after breaks, and after sudden changes in environmental
conditions. Sudden changes in environmental conditions should
also be recorded in the logbook. In addition, do not paint in
rain, snow, fog, or mist, or when the surface is covered with
frost.
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