standard symbol will be accepted only as indicating compliance
3.2.6.4
Observe and test blowdown valves, stop valves, try cocks, draft fans, fuel
equipment during the operational and capacity tests for leakage,
malfunctions, defects, and for compliance with referenced standards.
3.2.6.5
Perform the test of the feedwater treatment equipment in two steps. Conduct
one test concurrently with the combustion tests. The Government will
perform a second test during the first period of heavy loading after the
plant has been accepted and put in service. Correct deficiencies revealed
during the Government tests under the guarantee provisions of the contract.
Both the first and second series of tests shall determine compliance with
the limits for chemical concentrations of this specification. Supply
equipment for taking samples and test kit for analyzing samples. Sampling
equipment and test kit shall become the property of the Government when
tests are completed.
3.2.6.6
Capacity and Efficiency Tests
Perform capacity and efficiency tests after operating tests have been
satisfactorily completed and boiler has been operated continuously for at
least 14 days with no nuisance shutdowns and without the necessity for
frequent or difficult adjustments. Perform these tests on each boiler.
Conduct tests using [the] [each] specified fuel. Test procedures shall be
in accordance with the heat loss method [and the input-output method] of
ASME PTC 4.1. Before performing tests, the Contracting Officer and the
Contractor shall reach agreement on those items identified in ASME PTC 4.1
Section 3, paragraph 3.0l "Items on Which Agreement Shall be Reached." A
test run shall not start until the boiler and accessories have reached an
equilibrium and stabilization condition for at least one hour in duration.
Duration of tests shall be sufficient to record necessary data but in no
case shall each run be less than [4] [10] [24] hours.
a.
Accomplish maximum output testing by means of a single 2 hour run
at 110 percent load on the boiler under test. Calculate boiler
efficiency, both input-output and heat loss, from the consistent
readings taken during the runs. Runs shall be made at four
different loads 30, 50, 70, and 100 percent of boiler rating
during which both heat loss and input-output data shall be taken.
Predict unmeasured losses used in conjunction with heat loss
approval.
Subsequent tests required because of failure of the
equipment to perform adequately during specified capacity and
Contractor, including the cost of fuel.
b.
Should analysis of the coal being burned during performance tests
vary from that specified as the performance coal, the guarantees
shall be adjusted in accordance with accepted engineering practice
to determine compliance. Carbon loss shall be determined in
accordance with American Boiler Manufacturers Association curves
for carbon loss.
SECTION 15502N
Page 185