3.3.1
Field Tests
The Contractor shall notify the Contracting Officer [_____] days before the
performance and acceptance tests are to be conducted. The tests shall be
performed in the presence of the Contracting Officer. The Contractor shall
furnish all instruments and personnel required for the tests. Electricity,
steam, and water will be furnished by the Government. Before thermal
insulation is installed, the entire heating system, including all heating
units, valves and fittings, shall be hydrostatically tested at 1-1/2 times
the design operating pressure for a minimum of 4 hours.
3.3.2
Cleaning and Adjusting
After hydrostatic tests have been made and prior to the operating tests,
piping shall be thoroughly cleaned by filling the system with a solution of
one pound of caustic soda or 1.4 kg 3 pounds of trisodium phosphate per 380
liters 100 gallons of water. The water shall be heated to approximately 65
degrees C 150 degrees F, and the solution circulated in the system for a
period of 48 hours, then drained and thoroughly flushed out with fresh
water. Equipment shall be wiped clean, with all traces of oil, dust, dirt,
or paint spots removed. The Contractor shall be responsible for
maintaining the system in a clean condition until final acceptance.
Bearings shall be lubricated as recommended by the manufacturer. Belts
shall be adjusted with correct tension, and other miscellaneous equipment
shall be adjusted to setting indicated or as recommended by the respective
manufacturers.
3.3.3
System Operation
Upon completion and prior to acceptance of the project, the installation
shall be subjected to such operating tests as may be required to
demonstrate that the steam heating system will operate as specified or
indicated. Tests shall be conducted by a qualified test engineer at such
times as directed. The Contractor shall provide instruments, facilities,
and labor required to conduct the tests. Indicating instruments shall be
read at 1/2-hour intervals, unless otherwise directed. Tests shall cover a
period of 3 or more hours for each system tested, and test reports shall
include the following applicable specific information together with
conclusions as to the adequacy of the system:
a.
Time, date, and duration of test.
b.
Flow and pressure of steam to the inlet of the equipment.
c.
Make, model, and size of each piece of equipment.
d. Dry bulb temperature entering and leaving heating and ventilating
units.
e. Static discharge pressure actually obtained, total cfm handled, and
f.
Heating output for space-heating equipment.
g.
Capacity and discharge pressure of each pump.
h.
Automatic control sequence and operation.
SECTION 15562A
Page 39
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