Oklahoma Administrative Code
Title 252 - Department of Environmental Quality
Chapter 656 - Water Pollution Control Facility Construction Standards
Subchapter 7 - Pump Station Standards
Section 252:656-7-4 - Emergency operation
Universal Citation: OK Admin Code 252:656-7-4
Current through Vol. 41, No. 13, March 15, 2024
(a) Design. Design pumping stations to prevent bypassing of raw sewage during periods of power outage or mechanical failure. The pumping station must meet one of the following design conditions:
(1) an on-site standby generator with
automatic means of activation in the event of a power failure;
(2) a portable engine-driven pump with a
quick connection to the force main; four hours of emergency storage at the
average design flow above the alarm level; and telemetry to the city office
during working hours and to the home of the person(s) in responsible charge of
the lift station during off-duty hours;
(3) 24 hours of emergency storage at the
average design flow above the alarm level with an audio/visual alarm
system;
(4) an on-site
engine-driven pump with one hour of emergency storage at design flow above the
alarm level and an automatic means of activation; or
(5) a portable engine-driven generator with
four (4) hours of emergency storage at the design flow above the alarm level, a
telemetry alarm system that communicates to the person in charge of the lift
station, and a transfer switch with electrical system components that comply
with the National Electrical Code requirements that is pre-wired to allow for a
ready connection between the lift station and the portable generator.
(b) Equipment requirements.
(1)
General.
The following general requirements shall apply to all internal combustion
engines used to drive auxiliary pumps, service pumps and electrical generating
equipment:
(A)
Engine
protection. The engine must be protected from operating conditions that
would result in damage to equipment. Unless continuous manual supervision is
planned, protective equipment shall be capable of shutting down the engine and
activating an alarm.
(B)
Size. The engine shall have adequate rated power to start and
continuously operate all connected loads. The engines shall be capable of
handling the peak capacity of the station.
(C)
Routine start-up. All
emergency equipment shall be provided with instructions indicating the need for
regular starting and running of such units at full loads.
(D)
Equipment protection.
Emergency equipment shall be protected from damage due to restoration of
regular electrical power.
(E)
Instructions, tools and parts. Post a complete set of operational
instructions, emergency procedures and maintenance schedules at the station.
Provide any special tools and spare parts.
(2)
Engine-driven pumping
equipment. Where permanently installed or portable engine-driven pumps
are used, the following requirements shall also apply:
(A)
Pumping capacity.
Engine-driven pump(s) shall meet the design pumping requirements unless storage
capacity is available for flows beyond pump capacity. Pumps shall be designed
for anticipated operating conditions, including suction lift if
applicable.
(B)
Operation. The engine and pump shall be equipped for automatic
start-up and operation, and for manual start-up.
(C)
Portable pumping equipment.
Where part or all of the engine-driven pumping equipment is portable, a riser
from the force main with quick-connect coupling and appropriate valving shall
be provided to hook up portable pumps.
(D)
Telemetry. Connect a
telemetry alarm system from the engine-driven pump to the city office or cell
phone during working hours and to the home or cell phone of the person(s) in
responsible charge of the lift station during off-duty hours.
(3)
Engine-driven generating
equipment. Where permanently installed or portable engine-driven
generating equipment is used, the following requirements shall also apply:
(A)
Generating capacity.
Generating unit size shall be adequate to provide power for pump motor starting
current and for lighting, ventilation, and other auxiliary equipment necessary
for safety and proper operation of the lift station. Provide sequencing
controls to start pump motors unless the generating equipment has capacity to
start all pumps simultaneously with auxiliary equipment operating.
(B)
Operation. Provide for
automatic and manual start-up and load transfer. Protect the generator from
damaging operating conditions. The engine must start and stabilize at operation
speed before assuming the load.
(C)
Portable generating equipment. If portable generating equipment
will be used, include special electrical connections.
(c) Overflow basins. General construction of overflow basins shall be in accordance with 252:656-11-3.
(d) Alarm systems. Pumping stations shall have an automatic alarm system capable of alerting responsible maintenance personnel of an equipment failure before an overflow occurs, even during a power failure. If telemetry is not provided to an office manned 24 hours per day, then show an equivalent alerting capability.
Added at 17 Ok Reg 1140, eff 6-1-00; Amended at 18 Ok Reg 2019, eff 6-11-01; Amended at 23 Ok Reg 937, eff 6-15-06; Added at 28 Ok Reg 1282, eff 7-1-11
Disclaimer: These regulations may not be the most recent version. Oklahoma may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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