NSWC Operations Manual

Dl: Deciliter

Pumping Limits

  • Plant pressure- 78-86 psi

  • Glendale pressure- 30 psi- 56 psi (recommended pumping pressure 40 psi)

  • Fox point pressure- 30 psi- 65 psi (recommended pumping pressure is 60 psi)

  • Whitefish Bay pressure- 60 psi- 75 psi (recommended pumping pressure is 71 psi)


Chemical Limits

  • Alum: >4.0 ppm

  • Fluoride: Target dose is 0.70, acceptable range is 0.65-0.75 ppm

  • Chlorine: <3.00 ppm in plant tap water

    • Tap target dose: 2.60 ppm, acceptable range is 2.50-2.70 ppm

    • Current Clearwell target dose: 2.40 ppm, acceptable range is 2.25- 2.55 ppm

    • Tap free chlorine: <0.20 ppm

  • Phosphate: Target dose 3.30 ppm, acceptable range is >2.8ppm

  • Alkalinity: acceptable range is 105-125 dl

  • Hardness: acceptable range is 120-150 dl

  • pH: acceptable range is 7.00-8.00 for tap water

  • UVT: Target range is >95% (<95% and >3 from online analyzer is unacceptable)

Filters

  • <0.30 NTU in any filter, target range is <).10 NTU

  • >0.6 MGD flow per filter (0.3 MGD per side) and <3.0 MGD flow per filter (1.5 MGD per side)

  • Never stop filter flow, if so the filter must be taken out of service and back washed

  • Raw flow can not be adjusted up by greater than or equal to 0.5 MGD every 20 minutes

Turbidity

  • Clearwell <0.30 NTU combined filter effluent, target <0.10

  • Tap water <0.30 NTU, target is <0.10

Reservoir Level

  • 6.5’-14’

  • Moves up and down 0.3’ per hour for every 1 MGD difference in flo9w in or out of the reservoirs between 6.5’ -12.5’

  • From 12.5 to 14 both reservoirs are filling or draining level changes at 0.15 per hour for every 1 MGD difference in flow

Electrical Usage

  • Klode: <95 Kw for higher kw run the generator

  • Bender plant <340 kw for higher kw run the generator