down when a flow switch or other interlock at the
AOP master control indicates a flow interruption.
If a variable flow rate is anticipated, although
rarely used, the hydrogen peroxide feed rate can be
tied to the influent meter or AOP master control.
Coordinate operation with Section 11242A CHEMICAL
FEED SYSTEMS.
**************************************************************************
Hydrogen peroxide feed pump and control shall conform to the requirements
of Section 11242 CHEMICAL FEED SYSTEMS.
2.4.3
Alarms and Interlocks
**************************************************************************
NOTE: Delete items in this paragraph that are not
required.
Coordinate this paragraph with process and
instrumentation diagrams (PIDs) and other
specification sections. Metering accuracy for
hydrogen peroxide is generally done manually.
Indicate if separate audible or visual alarms beyond
the AOP master control system are required, and
their location.
**************************************************************************
Alarms and interlocks shall be provided to ensure proper operation of the
advanced oxidation equipment, and its sequenced shutdown based on
potentially unsafe or improper conditions that may exist. The following
paragraphs list alarms that (as a minimum) shall be monitored at the
central control point, or that will initiate shutdown of the appropriate
advanced oxidation equipment components.
2.4.3.1
AOP System
Failure of major equipment components such as lamps, ballasts, or safety
interlocks shall initiate system, followed by plant shutdown, if not
acknowledged. AOP system alarms and control interlocks shall be provided
for the following items:
Lamp failure
Ballast failure
Safety interlocks for open door on reactor vessel or panel
High water temperature in AOP reactor vessel
Low water flow to the reactor vessel
Sleeve wiper failure
High pressure in reactor vessel headspace
[_____].
2.4.3.2
Metering Pump
Pump failure shall initiate system, followed by plant shutdown, if not
acknowledged. Metering Pump alarms and control interlocks shall be
provided for the following items:
Hydrogen peroxide feed
Catalyst feed
Pump failure
SECTION 11377
Page 32
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