SECTION 252:656-21-1. General disinfection criteria

(a)   Applicability. The requirements in this section apply to all disinfection systems.

(b)   Design considerations. A disinfection system used to comply with the disinfection requirements:

(1)   in an OPDES permit shall be designed, constructed and operated to meet bacteria limits in the Water Quality Standards and the OPDES permit.

(2)   for a reclaimed water system shall be designed, constructed and operated to meet the bacteria limits in the water reuse permit and Appendix A of OAC 252:627.

(c)   Piping. The piping shall be:

(1)   appropriate and compatible for the type of disinfection to be used. Steel is suitable for use with dry chlorine when the correct thickness or weight is specified. Low-pressure lines made of hard rubber, saran-lined, rubber-lined, polyethylene, polyvinyl chloride (PVC), or Uscolite materials are satisfactory for liquid chlorine. Unplasticized PVC, Type I, may be used in submerged piping if the gas pressure is low and the temperature is below 140 °F; and

(2)   supported and protected from temperature extremes.

(d)   Alarms. Provide alarms to warn of equipment failures and leaks.

(e)   Redundancy. All disinfection systems shall have the following available:

(1)   standby equipment to replace the largest unit;

(2)   a separate backup power supply; and

(3)   spares for all parts that may break or wear.

[Source: Added at 17 Ok Reg 1140, eff 6-1-00; Amended at 23 Ok Reg 937, eff 6-15-06; Added at 28 Ok Reg 1282, eff 7-1-11; Amended at 31 Ok Reg 1315, eff 9-12-14]