and performance curves shall be submitted to the Contracting Officer.
Before any operational tests are conducted, the system shall be correctly
balanced within 5 percent of that indicated. Corrections and adjustments
shall be made as necessary to produce the required conditions. Approved
methods shall be used to measure all rates of flow. The efficiency and
general performance tests on the boilers shall be conducted by a qualified
test engineer furnished by the Contractor, and observed by a representative
of the Contracting Officer. Testing apparatus shall be set up, calibrated,
tested, and readied for testing the boiler before the arrival of the
representative of the Contracting Officer. Calibration curves or test
results furnished by an independent testing laboratory for each instrument,
meter, gauge, and thermometer to be used in efficiency and capacity test
shall be furnished before the test. A test report including logs, heat
balance calculations, and tabulated results together with conclusions shall
be delivered in quadruplicate. An analysis of the fuel being burned on the
test shall be submitted to the Contracting Officer. The analysis shall
include all pertinent data tabulated in the ASME PTC 4 abbreviated
efficiency test. The Contractor shall provide and install all necessary
temporary piping valves, controls, heat exchanger, and cooling water
provisions to provide a load for testing each HTW generator. If any system
load is available, the Contracting Officer will provide for loading the
heating system for the test, but full-load capability will probably require
a supplementary heat exchanger for the test.
3.7.4
Operating Tests
After adjustment and achievement of stable operation of the HTW generators,
each shall be tested continuously for 12 hours, minimum, to demonstrate
control and operational conformance to the requirements of this
specification under varying load conditions ranging from the specified
capacity to the minimum burner or stoker turndown ratio without on-off
cycling. In each case, the operating tests shall cover the periods for the
capacities tabulated below:
Waterwall Watertube Boilers
Time (minimum)
Percent of Capacity
First 2 hours
50
Next 2 hours
75
Next 6 hours*
100
Next 2 hours
110
* The efficiency tests may be conducted either concurrently with the
operating tests or separately at the option of the Contractor. Efficiency
shall be not less than that specified.
3.7.5
Test of Fuel Burning Equipment
Automatic oil burners shall also be tested for capability to provide high
temperature water in accordance with demand when on-off cycling is
required. Fuel burning equipment that exhibits excessive or unexplained
loss of ignition, nuisance shutdown due to faulty burner, stoker, or
control operation, improper flame, excessive carbon deposits or slag, or
necessity for difficult or frequent adjustments shall be rejected.
Operational tests shall include the following as applicable to the type of
HTW generator.
SECTION 15555A
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