reverse osmosis water treatment system] [provided by the Contractor] shall
be utilized for flushing, pressure testing, and disinfection. Piping
systems shall be disinfected by chlorination as specified. Final flushing
shall also utilize high-purity water. Testing connections to special
medical equipment shall be as indicated, as specified, and in accordance
with equipment manufacturer's instructions.
3.22.4
Oral Evacuation Vacuum System for Dental Operatories
Tests shall be performed by the Contractor under the supervision of a
competent engineer who has had at least 5 years experience installing and
testing central high-volume evacuation systems for dental operatories. The
Contractor shall prepare and submit a test schedule and a testing procedure
to the Contracting Officer for approval. The Contractor shall furnish test
materials, piping or tubing, equipment, and instruments. The Contractor
shall calibrate test instruments at a qualified independent laboratory.
Test shall be witnessed by the Contracting Officer.
3.22.4.1
Testing of Piping for Leaks
The completed piping system between turbine suction connection and
operating separator connections shall be exhausted down to a vacuum of not
less than 27 kPa 8 inches of mercury after initial drying out of pipeline.
The pressure shall not increase by more than 1.4 kPa 0.4 inches of mercury
in 1 hour. In the event vacuum does not hold, leaks shall be located and
repaired, and testing redone until the required vacuum holds.
3.22.4.2
Air Flow and Vacuum Tests
Air flow and vacuum tests shall be performed to confirm that the system can
meet vacuum and air flow requirements at aspirator tips and that vacuum
turbines can produce the required capacity. Testing shall be performed
after equipment is properly installed, and piping cleaned and proved tight.
A nominal 10 mm 3/8 inch internal diameter tube of 1.5 meters 5 feet
minimum length shall be installed temporarily at each dental operatory
water-air separator inlet connection. In the event water-air separator is
not installed or available for connection, an 8 mm 5/16 inch internal
diameter tube of 1.5 meters 5 feet minimum length shall be connected
temporarily to each water-air separator discharge connection point. Tubes
shall have smooth internal bore and shall be suitable for maximum system
vacuum. Required fittings and valves for connection of air flow gauges,
vacuum gauges, and air flow adjustment and shut off devices shall be
provided with tubes. Each tube shall handle a minimum of [_____] standard
L/second standard cfm of air flow and a suitable vacuum gauge shall be
installed temporarily on the suction of each vacuum turbine. Tests shall
start after the system has been operated and dried out. Tests shall be
conducted for a period of not less than 2 hours. Testing shall be done
with one turbine operating and then with both turbines operating. When one
turbine operates, testing shall be done at [_____] tubes and the other
tubes shall be closed or blanked. On testing with two turbines, testing
shall be done at [_____] tubes and other tubes shall be closed or blanked.
3.22.4.3
Recorded Test Data
Air flow, vacuum readings of each tube, and vacuum of the turbine suctions
shall be recorded in 10-minute intervals. Three copies of recorded test
data shall be furnished to the Contracting Officer.
SECTION 15405A
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