3.2.4.7
Safety Valves
The high-pressure limit switch shall be locked out or otherwise made
inoperative, and the boiler safety valves shall be lifted by steam. The
relieving capacity, popping pressure, blowdown, and reseating pressure
shall be determined by observation and measurement to be in accordance with
the ASME BPVC SEC I. The ASME standard symbol will be accepted only as
3.2.5
Capacity and Efficiency Tests
Perform the capacity and efficiency tests after satisfactory completion of
all tests previously specified herein and after the boilers have been
operating [continuously] for [one] [5] [_____] days with no nuisance
shutdowns and without the necessity for frequent or difficult adjustments.
The contractor is to continuously man the boiler during the test. Perform
these tests on each boiler. Conduct tests using [the] [each of the]
specified fuels. Test procedures shall be in accordance with the heat loss
method of ASME PTC 4.1 and shall be reported on the ASME Test Form for
Abbreviated Efficiency Test. Tests shall be performed at [25], 50, 75 and
100 percent loads. The duration of the tests shall be sufficient to record
necessary data but in no case shall test duration be less than [4] [_____]
hours [on each fuel].
3.2.6
Observe and check blowdown valves, stop valves, try cocks, draft fans, oil
equipment during the operational and capacity tests for leakage,
malfunctions, defects, noncompliance with referenced standards, or
overloading, as applicable.
3.2.7
Perform test of the feedwater treatment equipment in two steps. One test
shall be conducted by the Contractor concurrently with either the
combustion test or the capacity and efficiency test. A second test will be
performed by the Government during the first period of heavy loading after
the plant has been accepted and put in service. Deficiencies revealed
during the Government tests will be corrected under the guarantee
provisions of the contract. Both the first and second series of tests
shall determine compliance with the limits for oxygen content and hardness
concentrations of this specification. Equipment for taking samples and the
test kit for analyzing the samples shall be supplied by the Contractor and
shall revert to the Government when the tests are completed.
3.2.8
Deaerating Feed-Water Heater
Test of deaerating feed-water heater shall demonstrate that the equipment
installed shall meet the specified requirements as to performance,
capacity, and quality of effluent. During the operating test of the
boilers, conduct tests to determine oxygen content in accordance with ASTM
D 888, Method A. Test with no O2 scavenging chemical addition.Boilers
shall be operated at varying loads, up to maximum heater capacity, while
oxygen tests are being made.
3.2.9
Water Treatment Equipment
Test of water treatment equipment shall meet the requirements specified as
SECTION 15517N
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