The Raw Water Pumps are owned and maintained by MARCO; therefore, no maintenance activities are required of the Glasgow WTP staff.
Maintenance items for the other raw water components include the following. Scheduled periodic maintenance requirements of the turbidimeters are minimal and include calibration and cleaning of the photocell, bubble trap, and body. Check and clean the bubble trap and turbidimeter body, if visual inspection shows that it is necessary. It is very important to maintain the cleanliness of the interior and exterior of the turbidimeter body, head assembly, the integral bubble trap, and the surrounding area, to ensure accurate turbidity measurements.
- Daily: Check for proper operation. Instrumentation calibration as required.
- Weekly: General housekeeping, visual inspection and daily items. General housekeeping. Check the sampling tubing for accumulation of debris/sediment. If sediment is present in tubing, check the instrumentation. Clean as necessary. Clean the pH sensors and inspect for damage.
- Monthly: Clean the vial and vial compartment. Replace the vial as necessary. Inspect any dirt accumulation.
- Quarterly: Calibrate the raw water turbidimeters per manufacturer’s recommendations using an EPA approved primary standard. Clean the raw water instrumentation as necessary.
- Annually: Replace turbidimeter tubing as necessary.
Hardcopies of manufacturer’s O&M manuals are on file at the WTP and should be consulted for a complete list of required preventive maintenance items, as well as for major maintenance items or in the event of equipment failure.