5 Colo. Code Regs. § 1003-5-4.1

Current through Register Vol. 47, No. 11, June 10, 2024

Section 5 CCR 1003-5-4.1 - DISINFECTION

1.Disinfection Equipment General:

A. All pools shall be provided with an automatic or mechanical means of adding a disinfectant to the swimming pool water. Manual addition of chemicals or chemical solutions will be allowed only under special or emergency conditions which require that the pool be closed. During such condition, the pool must remain closed at least one pool turnover or until such time as the chemical is thoroughly dispersed throughout the pool water. After hand treatment for breakpoint disinfection and algae prevention, use of the pool may be resumed when the free disinfectant level drops within the range specified in Table 1, Section 4.7.

B.General Requirements (Disinfection Equipment): Chemical feeder equipment shall comply with all of the following:

1. Equipment shall be capable of being easily disassembled for cleaning and repair.

2. Equipment shall be constructed of corrosion-resistant materials.

3. Equipment shall be constructed to permit repeat adjustments without loss of output rate accuracy.

4. Equipment shall be constructed to minimize a stoppage from debris, chemicals intended to be used therein and/or from foreign materials that may be contained in said chemicals.

5. Equipment shall be designed specifically for the type of disinfectant to be used.

6. Equipment shall be provided with controls for adjusting rate of flow of disinfectant.

7. Equipment shall conform to the National Sanitation Foundation, (Standard 50) Swimming Pools, Spas, and Hot Tubs Circulation System Components, February 1, 1993.

8. Y strainers shall be installed in the disinfectant feeder supply line.

9. No connection shall be made to an external water supply for disinfection system operation.

C.Disinfection Point of Application: The application point of disinfectant shall be located in the return line downstream of the filter, recirculation pump, heater, and flow meter.

2.Chlorine Gas Equipment:

A. All chlorine gas equipment must comply with Section 4.1(1)(A&B).

B.Housing: A dedicated, well ventilated house or room at ground level shall be provided exclusively for chlorine gas purposes. The lockable door shall have a foot square "one-light" shatterproof and gas tight window to allow observation of conditions in the room prior to entering. The door shall not open to the swimming pool or deck and shall open to the outside. The door of the chlorine room shall have "panic hardware." The house or room shall be located so that chlorine gas, if accidentally released, will not flow into the pool area, mechanical room, or into the building ventilation, (i.e., opposite side of pool from the direction of prevailing winds)

C.Exhaust Ventilation: Sufficient ventilation shall be provided to allow one complete air change in the chlorination room every minute. The air exhaust duct shall be located within six (6) inches of the floor level. A louvered fresh air intake shall be provided near the ceiling to serve as a make-up air supply when the exhaust fan is operating. The exhaust fan shall be wired to a control switch which is located outside and adjacent to the chlorine room door. The exhaust ducting shall terminate at a point not less than 8 (eight) feet above surrounding grade. Exhaust duct termination point shall be outside of the building, away from any occupied area or any fresh air intake.

D.Lighting: A minimum of 10 (ten) foot candles of illumination shall be provided and electrical switches for control of the lighting shall be located on the outside and adjacent to the chlorine room door.

E.Chlorine Feeder Seals: A new washer or gasket approved for use on chlorine gas shall be used each time a chlorine cylinder is connected to the chlorinator. Spare washers/gaskets shall be kept on site.

F.Vent Line: The vent line exhaust duct and/or pressure relief valve from the gas chlorinator and/or chlorine room shall vent away from any occupied area or any fresh air intake.

G.Leakage Test Kit: A leakage test kit consisting of ammonia (23° Baume) water and shall be provided.

H.Respiratory Protection Equipment: At least one Self-Contained Breathing Apparatus (SCBA) minimum thirty (30) minute capacity certified by the National institute for Occupational Safety and Health (NIOSH)-shall be provided, operative and hung to a conspicuous place outside the chlorination room in an area easily accessible to pool employees. A cabinet may be utilized to provide security for the SCBA. Monthly working condition checks of the SCBA shall be done and records kept thereto. Pool employees shall be trained in the proper use of SCBA equipment.

I.Chlorine Cylinders: Chlorine cylinders shall be anchored in an upright position to prevent falling over. A valve stem wrench shall be maintained on any cylinder in use, so the supply can be shut off quickly in case of an emergency. The valve protection hood shall be kept in place, except when the cylinder is connected to the feeder. Empty chlorine gas cylinders shall be tagged as such. Full and empty chlorine gas cylinders shall be stored only in the chlorine room.

J.Platform Scales: Platform scales for chlorine cylinder(s) shall be provided for cylinder(s)

in use. Said scales shall be capable of indicating gross weight within one half (1/2) pound accuracy.

K. The chlorinator shall be a solution-feed type, capable of delivering chlorine at its maximum rate without releasing chlorine gas to the atmosphere.

L. The chlorinators shall be designed to prevent the backflow of water into the chlorine regulator.

M. The gas chlorine room shall have a Hazardous Materials classification sign affixed to the entry door. This sign shall use the National Fire Protection Association Hazard Rating System as shown below specific for gas chlorine.

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N. The recirculatory pump and chlorine booster pump motor controls shall be interlocked so that the booster pump cannot operate when the recirculating pump is off or during the back wash cycle.

3.Chlorinated Hypochlorites and Chlorinated Isocyanurates:

A. All hypochlorite and Chlorinated Isocyanurate dispensing equipment shall comply with Section 4.1(1)(A&B).

B. When a hypochlorite solution is used, it shall be fed through hypochlorinator equipment. Such equipment shall also provide the following additional features:

(1) Positive feed under all conditions of pressure in the circulating system, without artificial constriction of the pump suction line, whether this line is under vacuum or pressure.

(2) Regulation to insure constant feed with varying supply of back pressure.

(3) Positive features to prevent backflow from recirculation system to the solution container and provision for reducing to a minimum the entry into swimming pool of free calcium released from calcium hypochlorite.

(4) Provision to prevent siphoning of hypochlorite solution when the recirculation pump and hypochlorinator are both turned off. (This applies to above swimming pool level installations only.)

C. Pools using Chlorinated Isocyanurate or Chlorinated Hypochlorites shall have onsite and available either a Self-Contained Breathing Apparatus as required in Section 4.1(2)(H) or have available a canister type respirator approved by either the U.S. Bureau of Mines or NIOSH for use with chlorine. Canister type respirators must have available canisters which have not exceeded their manufactures expiration date. Canister dates should be checked monthly and recorded on the record. This respiratory protection device shall be stored outside the chlorine area, be kept in good working order, and be easily accessible to the employee.

4.Bromine:

Bromination equipment, if employed, shall meet the provision of Section 4.7

5.Other Disinfectant Equipment and Methods:

Other disinfecting equipment or materials may be used if they have been adequately demonstrated to the Colorado Department of Health and/or its authorized agent to provide a satisfactory residual effect which is easily measured or where demonstration and analysis provide assurance that results are effective under conditions of use to meet the water quality standards set forth in these regulations and not be dangerous to public health, create objectionable physiological effects, or, impart toxic properties to the water.

6.Storage and Handling of Chemicals:

A. All chemicals shall be kept out of reach of children.

B. Chemicals shall be stored in original containers; with the original lids securely in place; out of the sunlight; in a cool, dry, well ventilated area. Chemicals supplied in bulk bag form shall be stored in clearly marked corrosive resistant containers with tightly fitted lids.

C. Chemicals shall not be stored near a heat source, open flame, or electrical equipment.

D. Sanitizers or oxidizers shall not be stored in the same area as pool equipment.

E. Liquid chemicals shall not be stored above or adjacent to dry chemicals.

F. Pool chemicals shall not be stored in the same area as insecticides, herbicides, fertilizers or liquid petroleum products.

G. Chemicals shall not be stored above eye level.

H. Shelving used for chemical storage shall be secure.

I. Acids shall be stored separately from all bases.

J. Chemicals packaged in absorbent containers shall be kept at least six (6) inches off the floor on nonflammable surfaces.

K. All chemical storage areas shall be kept dean.

L. Manufactures label instruction shall be complied with.

M. Separate measuring devices for each chemical shall be used. These measuring devices shall be clean, dry and constructed of material compatible with the chemical to be measured. Glass shall not be used.

N. Chemicals shall be added to water, water shall never be added to chemicals.

O. Oxidizers shall not be mixed with any other chemicals.

P. Chemicals shall not be mixed with powdered chlorine or liquid chlorine.

Q. Smoking, eating, or drinking shall not be allowed when using chemicals.

R. Disposal of chemicals and/or empty containers shall be in accordance with label instructions.

5 CCR 1003-5-4.1

43 CR 22, November 25, 2020, effective 12/15/2020