South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-58.4 - Finished Water Pumping, Storage, and Distribution Facilities
Section 61-58.4.B - Pumping Facilities
Universal Citation: SC Code Regs 61-58.4.B
Current through Register Vol. 48, No. 9, September 27, 2024
(1) Requirements for Pump Stations--Pumping facilities shall be designed to maintain the sanitary quality of pumped water.
(a) Location--
(i) The pumping station shall be located so
that the site will meet the requirements for sanitary protection of water
quality, hydraulics of the system and protection against interruption of
service by fire, flood or any other hazard.
(ii) The station shall be elevated to a
minimum of one (1) foot above the one hundred (100) year flood elevation, or
protected to such elevation, shall be readily accessible at all times unless
permitted to be out of service for the period of inaccessibility, shall be
graded around the station so as to lead surface drainage away from the station,
and shall be protected to prevent vandalism and entrance by animals and
unauthorized persons.
(b) General Design Considerations--Pump
stations shall be of durable construction, fire and weather resistant and with
outward-opening doors. The floor elevation of pump stations shall be at least
six (6) inches above finished grade, have waterproofed underground structure,
and have all floors drained in such a manner that the quality of the potable
water will not be endangered. All floors shall slope to a suitable drain and
provide a suitable outlet for drainage from pump glands without discharging
onto the floor.
(c) Pumping
Equipment--
(i) At least two (2) pumping
units shall be provided. The pumping station shall be sized adequately to
supply the maximum daily demand with any pump out of service. The pumping units
shall:
(A) Be driven by a prime mover able to
operate against the maximum head and air temperature which may be
encountered;
(B) Have spare parts
and tools readily available;
(C) Be
equipped with elapsed time hour meters for each pump or another acceptable
mechanism to monitor run times; and.
(D) Be sized to operate from minimum to
maximum pumping conditions without overloading the motor.
(ii) Prime water must not be of lesser
sanitary quality than that of the water being pumped. Means shall be provided
to prevent back-siphonage. When an air-operated ejector is used, the screened
intake shall draw clean air from a point at least ten (10) feet above the
ground or other source of possible contamination, unless the air is filtered by
an apparatus approved by the Department. Vacuum priming may be used.
(iii) For pumps designed so that bearing
lubrication fluids come into contact with the water being pumped, only water
lubricated pumps may be used unless otherwise approved by the
Department.
(d)
Equipment Servicing--Pump stations shall be designed so that proper maintenance
of the equipment can be provided.
(e) Operator Access--Pump stations shall be
designed for easy access by stairs or ladders when necessary.
(f) Heating--In pump houses not occupied by
personnel, only enough heat need be provided to prevent freezing of equipment
or treatment process.
(g)
Ventilation--Ventilation shall conform to existing local, federal, and/or state
codes. Adequate ventilation shall be provided for all pumping
stations.
(h) Lighting--Pump
stations shall be adequately lighted throughout. All electrical work shall
conform to the requirements of the National Electric Code or applicable state
and local codes.
(i) Auxiliary
Power--Where elevated storage equals less than one half maximum daily demand,
portable or in-place auxiliary power shall be provided for all systems serving
three hundred (300) or more service connections. An air quality permit may be
required for the air emissions from the auxiliary generators. Auxiliary power
requirements may be waived if one or more of the following are applicable:
(i) a verifiable history of worst case power
outages and verification that the available elevated storage can provide for a
similar time period of outage;
(ii)
two (2) or more independent sources from the serving electrical utility are
available; or,
(iii) an alternate
water source is available via connections with other systems.
Auxiliary power shall be sized to provide for sufficient pumping capacity to meet the one half ( 1/2) of the maximum daily demand or to supplement the existing storage to meet one half ( 1/2) of the maximum daily demand.
(j)
Protection From Trespassers--Fencing, locks on doors, and other necessary
precautions shall be provided to prevent trespassing, vandalism, and
sabotage.
(2) Booster Pump Stations--Booster pump stations shall meet all applicable portions of R.61-58.4(B)(1)(B)(1)Paragraph in addition to the requirements below.
(a)
Booster pumps shall be located or controlled so that they will not produce less
than twenty-five (25) pounds per square inch anywhere in the affected
distribution system when the pump is in normal operation. An automatic cutoff
switch or throttling valve shall be installed to prevent the pressure anywhere
in the affected distribution system from dropping below twenty (20) pounds per
square inch. Automatic or remote control devices shall have a range between the
start and cutoff pressure which will prevent excessive cycling, and a bypass
line shall be provided. Fire booster pumps must have a device to monitor
suction pressure and throttle the output of the pump to maintain the suction
pressure above twenty (20) pounds per square inch anywhere in the affected
distribution system, but, not shut the pump off.
(b) In-line booster pumps shall be accessible
for servicing and repairs.
(3) Automatic Pump Stations--All automatic pump stations shall be provided with a warning light or telemetry system which will report when the station is out of service. All remote controlled stations shall be electrically operated and controlled and shall have signaling apparatus of proven performance. Installation of electrical equipment shall conform with the applicable state and local electrical codes and the National Electrical Code. A sign with a twenty-four (24) hour telephone number for emergencies shall be displayed on the outside of the station in a visible location, unless the system has twenty-four (24) hour monitoring.
(4) Appurtenances--
(a) Valves--Pumps shall be adequately valved
to permit satisfactory operation, maintenance and repair of the equipment. Each
pump shall have a positive-acting check valve on the discharge side between the
pump and the shut-off valve.
(b)
Piping--In general, suction and discharge piping shall:
(i) be designed so that the friction losses
will be minimized;
(ii) not be
subject to contamination;
(iii) be
sloped in one direction to drain;
(iv) have watertight joints;
(v) have adequate clean-outs;
(vi) be protected against surge or water
hammer; and,
(vii) be manifolded or
have an individual suction line to ensure similar hydraulic and operating
conditions.
(c)
Gauges--Each pump shall:
(i) Have a standard
pressure gauge on its discharge line; and,
(ii) Have a compound gauge on its suction
line;
(d) Water
Seals--Water seals shall not be supplied with water of a lesser sanitary
quality than that of the water being pumped. Where pumps are sealed with
potable water and are pumping water of lesser sanitary quality the seal shall
be provided with a back-flow preventer appropriate for the degree of hazard in
question.
(e) Controls--Pumps,
their prime movers and accessories, shall be controlled in such a manner that
they will operate at rated capacity without dangerous overload. Where two or
more pumps are installed, provision shall be made for alternation. Provision
shall be made to prevent energizing the motor in the event of a backspin cycle.
Electrical controls shall be located above grade.
(f) Water Pre-lubrication--When automatic
pre-lubrication of pump bearings is necessary and an auxiliary power supply is
provided, the pre-lubrication line shall be provided with a valved bypass
around the automatic control so that the bearings can, if necessary, be
lubricated manually before the pump is started.
Disclaimer: These regulations may not be the most recent version. South Carolina 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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