Oklahoma Administrative Code › Title 310 - Oklahoma State Department of Health › Chapter 315 - Public Bathing Place Facility Standards › Subchapter 7 - Construction and Operation › Section 310:315-7-16 - Disinfection and pH control

Current through Vol. 41, No. 20, July 1, 2024
(a)
Chlorinator or other disinfection feeder.
The pool shall be
				equipped with a chlorinator or other residual disinfectant feeder which meets
				the following requirements:
(1)
Feeders.
All chemicals and chemical solutions shall be added to
				the pool water recirculation flow using a feeder that is acceptable to the
				Department.
(2)
Construction
				and materials.
It shall be of sturdy construction and materials which
				will withstand wear, corrosion, or attack by disinfectant solutions or vapors
				and which are not adversely affected by repeated regular adjustments or other
				conditions anticipated in the use of the device. Feeders requiring field
				maintenance or cleaning are required to be easily disassembled. The design and
				construction shall be such as to preclude stoppage from chemicals used or
				foreign material. The feeder shall incorporate failure-proof features so that
				the disinfectant cannot feed directly into the pool, the pool piping or pool
				enclosure following any type of failure of the equipment or its maintenance.
				Super-chlorination shall be accomplished by the addition of calcium
				hypochlorite, sodium hypochlorite, or other approved chlorine compounds.
				Solution chemical feeders and flow through chemical feeders need to be listed
				as meeting the appropriate National Sanitation Foundation Standard and bear the
				NSF seal of approval.
(3)
Sizing of disinfection equipment.
Solution and gas feeders shall
				be capable of supplying the equivalent of 1.5 pounds of available chlorine in
				eight (8) hours, for each ten thousand (10,000) gallons of pool capacity.
				Feeders used with organic chlorine compounds or other stabilized chlorine shall
				be capable of supplying the equivalent of 0.5 pounds of available chlorine in
				eight (8) hours, for each ten thousand (10,000) gallons of pool capacity and
				the cyanurate concentration in the pool shall be at least thirty (30) mg/1 and
				does not exceed one hundred (100) mg/1.
(4)
Erosion type feeders.
Erosion type chlorinators using stabilized chlorine compounds shall have a flow
				meter, calibrated valve, or other device acceptable to the regulatory authority
				to determine the rate of flow of water through the chlorinator. The device can
				be either calibrated in pounds chlorine feed per unit of time or calibrated in
				gallons of flow per unit of time with an attached chart to convert the water
				flow rate to pounds of chlorine feed. The feeder shall be capable of continuous
				delivery within ten (10) percent of the dosage setting.
(5)
Solution type feed pumps.
The pump shall have a calibrated rate control and be adjustable from zero (0)
				to full range. The feeder shall have the capability of feeding the required
				dosage using a two and one-half (2-1/2) percent solution.
(6)
Chlorination for normal
				operation.
Chlorinators shall be installed per the manufacturer's
				recommendation. Where super-chlorination is accomplished by chemical feeders,
				the solution shall be introduced before the sand filter. When the disinfectant
				is introduced at the suction side of the pump, a device or method shall be
				provided to prevent air-locking of the pump or recirculation system.
(7)
Chlorination to prevent
				backflow.
The chlorinators shall be designed to prevent the backflow of
				water into the chlorine container.
(8)
Compressed chlorine gas.
When compressed chlorine gas is used, the following additional features are
				required:
(A) The chlorine and chlorinating
				equipment are located either out-of-doors or in a separate well-ventilated
				room. Such rooms should preferably be above ground and provided with vents near
				the floor which terminate outdoors. The door of the room shall have a viewport,
				not open to the pool enclosure, and open outward. When located out-of-doors,
				the cylinders shall be securely anchored to prevent them from falling over and
				surrounded by a six (6) foot high, woven wire fence, or equivalent, and a
				locked gate.
(B) Where gaseous
				chlorine equipment is provided below grade in a filter room, or in any part of
				a building which provides housing, the mechanical proportioning device and
				cylinders of chlorine shall be housed in a reasonably gas-tight,
				corrosion-resistant, and mechanically vented enclosure. Air-tight duct work
				from the bottom of the enclosure to atmosphere in an unrestricted area and a
				motor-driven exhaust fan capable of producing at least one (1) air change per
				minute is required. Automatic louvers of good design near the top of the
				enclosure for admitting fresh air are required. An opening at least eighteen
				(18) inches square, glazed with clear glass, and artificial illumination shall
				be provided in an amount such that the essential performance of the equipment
				may be observed at all times without opening the enclosure. The floor area of
				the enclosure shall be of adequate size to house the chlorinator, fan, scales,
				and one (1) extra chlorine cylinder.
(C) Electrical switches for the control of
				artificial lighting and ventilation shall be on the outside of the enclosure
				adjacent to the door.
(D) The
				chlorine equipment shall be of rugged design capable of withstanding wear
				without developing leaks.
(E)
				Chlorine cylinders shall beon platform scales and anchored to prevent their
				falling over. An approved and accessible chlorine cylinder valve stem wrench is
				required.
(F) The chlorine feeding
				device shall be designed so that during accidents or interruptions of the water
				or electric power supply, the chlorine feed will shut off automatically and
				leaking chlorine gas will be vented outdoors. The device shall be capable of
				delivering chlorine at its maximum rate without releasing chlorine gas to the
				atmosphere.
(G) A gas mask and
				fresh replacement canister designed for use in a chlorine atmosphere and of a
				type approved by the U.S. Bureau of Mines is required.
(H) The gas mask and canister shall be kept
				in a closed cabinet accessible without a key and located well away from the gas
				chlorinator or the room where the gas chlorinator is installed, such that it
				may easily and safely be reached and be put on out of range of possible gas
				fumes.
(I) Canister-type gas masks
				are suitable only with low concentrations of chlorine gas. In the event of a
				serious leak, the fire department shall be called.