Operator Reports for New Technologies

Vanessa Wike, P.E.Statewide Engineering Coordinator(907) 269-7696555 Cordova St.Anchorage, AK 99501vanessa.wike@alaska.gov

Department of Environmental ConservationDrinking Water Program

Overview• New rules are placing a greater emphasis on the

QA/QC of the treatment processes:– A strong focus is being placed on whether the plant is

operating within the approved design/construction specifications.

• Biggest change will be for UV systems:– Additional training requirements will be included in

operational approvals.• Manufacturer Training (bulb change-out, etc).• Consultant Training (dosage calculations, operator reports).

– MOR’s:• “Set Point” MOR’s.• “Calculated Dose” MOR’s.

MOR’s• MOR’s for newer Surface Water Treatment

technologies will be custom made for each system.• The format of the MOR will depend on parameters

set during the design of the system.• Instead of monitoring to identify when things go

wrong, monitoring will now be more important in identifying when things are starting to go wrong.

Going > Going > Going > Gone

Example “Daily” ReportMonthly Operator Report, for “Set Point” Designed UV Treatment Plant

Example “Daily” ReportMonthly Operator Report, for “Set Point” Designed UV Treatment Plant

Example “Daily” ReportMonthly Operator Report, for “Set Point” Designed UV Treatment Plant

Intensity (Dosage) is set during engineering plan review, for specific flow rate. Every 4 hours:** Time** Intensity** Flow

Example “Daily” ReportMonthly Operator Report, for “Set Point” Designed UV Treatment Plant

Intensity

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Daily” ReportMonthly Operator Report, for “Set Point” Designed UV Treatment Plant

Every MONTH do sensor calibration check.Must Report amount of “Off-Spec” water.

Example “Daily” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Daily” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Daily” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

•A required dose is set during engineering plan review.

•A “Validated Dose” is then calculated, by dividing the calculated dose by a verification factor and a correction factor. This is done for every recorded dose on the MOR.

•The “Calculated Dose” approach does not have a single compliance point, but instead has an approved envelope of operational parameters (flow, dose, transmittance).

Example “Daily” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Daily” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

•Each UV Reactor will have a separate MOR.

•“Off-Spec” production must be indicated on each report.

•Separate forms are required for calibration/verification of the sensor, UVT analyzer and flow meter

Example “Off-Spec” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Off-Spec” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

Example “Off-Spec” Report Monthly Operator Report, for “Calculated Dose” Designed UV Treatment Plant*

* Chapter 6 EPA UV Guidance Manual, 2006.

“Off-Spec” operations must be reported (number of events and volume of water produced).

“Off-Spec” can occur because:• Sensor is not in calibration, or is outside approved limits.• Analyzer is not in calibration, or is outside approved limits.• Flow meter is not in calibration, or is outside approved limits.

To meet LT2, 95% of the water must be treated to validated limits.

Keys to Succeeding with New Technologies

• Monitoring: Residual > Process Control LimitsAccurate, Consistent Readings

• Be Wary of ComplacencyDon’t let the instruments think for you!

• Treat your instruments with respect:Calibrate, Verify, Maintain

If you have questions, please give us a call.

Operator Reports for New Technologies

Vanessa Wike, P.E.Statewide Engineering Coordinator(907) 269-7696555 Cordova St.Anchorage, AK 99501vanessa.wike@alaska.gov

Department of Environmental ConservationDrinking Water Program