Instructional Manual For Clarification Of Startup In Source Categories Affected By New Source Performance Standards - U.s. Environmental Protection Agency - 1979 Page 35
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146 Startup Operations
Once all equipment is installed and thoroughly checked for proper
mechanical operation (this may take from 2 tp6'months). the plant'is ready
to undergo initiation of nitric acid production.
Preliminary startup opera-
tions, consist of the following steps:
1.
startup of air compressor system
2.
initiation of water flow to adsorber to¥er and
cau~tic
flow
to, scrubber (where a scrubber is used)
3.
platinum gauze lit by hydrogen tOrch to initiate burning of
ammonia (flame is self-sustaining)
4.
Ammonia flow is begun.
Within 2 to 3 weeks of this initial. startup. the plant is ready for a
te~t
or demonstration run.
Test runs
us~ally
last
3,
7, or 14 days 4epending on
the contract.
During this time, the plant must achieve
it~
peak efficiency,
maximum design rate, and meet all applicable emission regulations.
A violation
of any of these conditions or other equipment malfunctions results in a cessa-
tion of the test run.,
The conclusion of a
su~cessful
test run results in the
"legal acceptance" of the plant from the contractor.
The best point in time co define plant
st~rtup
is when the ammonia flow
to the converter is initiated.
Barring
no-unu~ual
problems, the completion of
a successful test run and the achievement of maximum production rate should be
about one month or less from this startup point.
An
important point with re-
spect to nitric acid facilities is that the summer months are the most critical
for proper operation due to cooling requirements for the exothermic reaction
involved.
For this reason, most new plants, try to come on line during the
summer when a successful test run would be most meaningful.
Because of the
requirement for performance testing within 180 d,ys of startup, it is conceiv-
able that testing could be required during the winter months when a plant would
find it easiest to meet applicable em:Lssion lim:i,tations.
In this instance,
regulatory agencies might want to conduct
t~sting
as soon after startup as
. possible, consider postponement of tests until the following summer, or con-
sider winter testing and subsequent summer testing.
23
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