3.2.5.3
Boiler Cleaning and Startup
Dry out, boil out, and operate firing rate of new boiler(s) under direct
responsibility and supervision of the manufacturer, [and in the presence of
boiler room operating personnel]. Provide required chemicals. Allow
sufficient time for boiling out process to ensure interior surfaces are
clean. This time shall be at least 24 continuous hours and generally not
more than 36 hours; boil out shall continue until water is clear. Boil
out, cleaning and starting procedures shall be in accordance with
requirements of ASME BPVC SEC VII and FM DS 12-17.
3.2.5.4
Boiler Preliminary Operational Tests
Conduct a boiler operational test on each unit continuously for two weeks.
Operate one boiler at a time to demonstrate control and operational
conformance to specified requirements including ability to respond to load
swings from the specified capacity to minimum turndown. Conduct
operational test under the supervision of a registered professional
engineer or a licensed power plant operator and demonstrate operation of
safeties, controls, maintenance of stable combustion at low loads, proper
flame lengths and patterns to avoid flame impingement on the tubes for oil
firing [or gas firing], and proper mechanical and electrical functioning of
systems. This test shall include items mentioned in this specification as
well as items mentioned in the specification of the particular pieces of
equipment. Conduct tests with factory trained combustion equipment
engineers as previously specified. Test and record steam quality, steam
flowrates, flue gas temperature, percentages of carbon dioxide, carbon
monoxide, oxygen and nitrogen in the flue gas and percent excess air for
each boiler at tested load and graphically present test data.
3.2.5.5
General Controls Operational Tests
Conduct operational tests, performance tests, and demonstration tests with
boiler controls functional and on line. No bypassing, use of jumpers, or
other disablement of control systems will be allowed unless specified
elsewhere.
3.2.5.6
Steady State Combustion Tests
Test fuel burning and combustion control equipment with each of the
specific fuels at the minimum limit of the turndown range and at increments
of 50, 75 and 100 percent of full rated load. Each test run shall be at
least two hours on each fuel and until stack temperatures are constant and
capacity and efficiency requirements of this specification have been
verified and recorded. Verify proper operation of instrumentation and
gages during the tests.
3.2.5.7
Varying Load Combustion Tests
Test boilers continuously under varying load conditions to demonstrate
proper operability of the combustion control, flame safeguard control,
programming control and safety interlocks. Conduct these tests after the
adjustment of the combustion controls has been completed under the steady
state combustion tests. Continue the variable load operational tests for a
period of at least 8 hours.
a.
Sequencing: Boiler shall start, operate and stop in strict
accordance with the specified operating sequence.
SECTION 15511N
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