§ 302.1208. PLCs and SCADA.
(a) An owner may use a PLC or SCADA system to monitor, maintain or make decisions regarding any process control activity within the water or wastewater system.
(b) The available operator shall monitor a PLC or SCADA system that is used for process control, and have the ability to adjust, or direct the adjustment of, these systems when necessary to maintain compliance with Federal or State law or rules and regulations promulgated thereto or permit conditions and requirements applicable to the operation of water or wastewater systems.
(c) A system utilizing a PLC or SCADA system shall have a backup emergency plan for making process control decisions when, or if, the PLC or SCADA system is inoperable.
(d) If an owner wants to have a PLC or SCADA system oversee more than one water or wastewater system simultaneously, the system specific management plan developed under § 302.1207 (relating to the operation of multiple treatment systems) must also identify and demonstrate how process control decisions not performed by the PLC or SCADA system will be made and demonstrate how continual staffing and monitoring of systems controlled by a PLC or SCADA system will be maintained.
Cross References This section cited in 25 Pa. Code § 302.1203 (relating to process control decisions).
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