[_____] percent of the maximum storage tank volume. Hydrogen peroxide
storage tanks shall be equipped with [50] [_____] mm [2] [_____] inch
female quick fill connection; [600] [_____] mm [24] [_____] inch hinged,
weighted and gasketed manway cover; [50] [_____] mm [2] [_____] inch
filtered breather vent; liquid level site tube; and [600] [_____] mm [24]
[_____] inch free floating roof manway cover. All piping connections shall
be flanged. Feed pumps shall conform to the requirements of Section 11242
CHEMICAL FEED SYSTEMS.
2.2.7
Redox Potential Meter
The oxidation reduction meter shall be provided [where indicated on the
drawings] [on the effluent line of each reactor]. Probe shall be easily
removable without interrupting service. Probe materials shall be resistant
to ozone as well hydrogen peroxide attack over a pH range of 2 to 12 and
operating pressures of up to [_____] kPa psi and suitable for a temperature
range from [0 to 100] [_____] degrees C [32 to 212] [_____] degrees F and
suitable for the medium monitored. Probe shall transmit output to an ORP
analyzer with digital output. The ORP analyzer shall transmit a [[4 to 20]
[_____] mA signal proportional to the ORP] [direct digital reading] to the
central control unit.
2.2.8
pH Probe
The pH probe shall be provided [where indicated on the drawings] [on the
effluent line of each reactor]. Probe shall be easily removable without
interrupting service. Probe materials shall be resistant to ozone as well
hydrogen peroxide attack over a pH range of 0 to 14 and operating pressures
of up to [_____] kPa psi and suitable for a temperature range from [0 to
100] [_____] degrees C [32 to 212] [_____] degrees F and suitable for the
medium monitored. Probe shall transmit output to a pH analyzer with
digital output. The pH analyzer shall transmit a [[4 to 20] [_____] mA
signal proportional to the pH] [direct digital reading] to the central
2.2.9
Ozone Monitors
2.2.9.1
Vapor Phase
Separate ozone monitors shall be provided to monitor ozone in ambient air,
[at the locations shown on the drawings,] determining the ozone levels
downstream of the off gas ozone destruct system, [and the ozone
concentration in the ozone generator discharge]. The ambient air
monitoring unit intake shall be located [within 455 mm 18 inches above the
treatment plant floor] [at the location shown on the drawings] [adjacent to
the AOP process equipment]. The ambient air monitors shall be interlocked
with the ozone generation system to initiate an alarm condition, and ozone
generator shut down when readings exceed preset levels. Analyzers shall be
[4 to 20 mA] [direct digital] output ultraviolet adsorption photometer type
with built in pressure and temperature compensation. Ozone off gas monitor
shall have a minimum of five separate ranges to monitor concentrations
between [[0 to 15] [_____] percent,] [[0 to 99,000] [_____] ppm by volume].
Ambient air and off gas destruct monitors shall have a minimum of five
separate ranges to monitor concentrations between [0 to 10] [_____] ppm.
Each monitor shall be provided with a builtin digital ozone concentration
readout at the unit.
SECTION 11377
Page 26
Previous Page
