• 383B County Road 4, R.R. #8, Picton, ON K0K 2T0

ROV INSPECTIONS

MISCO Inspection Services has extensive experience with elevated water tower ROV Inspections. Our new acquisitions will allow us to provide additional support as is relates to inspecting and maintaining your elevated water towers.

We have six NACE Coating Inspectors that have extensive experience with elevated water towers and their coating and lining over the past twenty-five years.

SERVICE DETAILS

MISCO Inspection Services completes ROV inspection services in Ontario and throughout Canada. We provide seven types of services for your water tower.

We will always recommend a dry inspection (water removal) at the standard five year inspection. This will allow for a proper cleaning removing of debris and silt on the floor of the tower. But, if not available we would recommend using our vacuum cleaning ROV Unit for your internal cleaning.

With potable water tower inspection using the Dry Method this method has advantages and disadvantages for reviewing the determining the current overall condition of the internal liner system.

Our inspection will review; ceiling, walls, floor, inlet, outlet vent. The “Dry Method” provides the opportunity to inspect for delamination, rust conditions, heavy corrosion and percentages of affected areas. Then review the amount of debris on floor and thickness of sediment. Typically these potable water reservoirs should be drained and cleaned every 5 years at the latest. These timelines will provide better assessment as to how often your water reservoir should be cleaned internally. With early detection heavy rusting, corrosion, leaks can be minimized prior to a large issue developing, provide a maintenance repair program has been established every five years.

Our visual inspection on the exterior walls will be completed using a drone unit and visual inspection on the roof using a camera. The report will provide a detailed account of the current condition of the exterior surfaces.

With potable water tower can remain online during the pressure washing phase of work.

Our pressure washing process will run between 2500 psi up to 5,000 psi. We will ensure the surfaces are pressure washed back to clean topcoat surfaces. We will reduce or pressure (as required) to ensure the topcoat does not delaminate and cause repairs.

We will reduce pressure on the unit and then use cleaner and brushes to clean the tower. Our pressure washing process would require supply (by owner) potable water for the pressure washing operations. We would require that the owner provide “back flow adaptor” to protect the owner during our on-site work.

Deliverable List for your records:

  • Pre-pressure washing and Post-Pressure Washing Photos and cleaning report

Our External Paint Maintenance Repair will require the tower being lowered 300mm below the areas to be repaired. Depending on the location of the repairs, the tower may have to be drained. This will allow for the repairs to move forward without delays.

This process provides light pressure washing in the area to be repaired. Typically we could pressure wash the total tower but this would increase the fees accordingly.

Our pressure washing process would require water supply (by owner) potable water for the pressure washing operations. We would require that the owner provide “back flow adaptor” to protect the owner during our on-site work.

Our firm will supply the required manlift to complete the exterior repair overcoating work.

Deliverable List for your records:

  • Pre-pressure washing and Post-Pressure Cleaning Photos and cleaning report
  • NACE Documentation for Coating Application and DFT’s, Photos

For logo and signage repairs, the tower will require being lowered 300mm below the areas to be repaired. The tower must be offline for the duration of the coating repairs or below this point, if possible. This will allow repairs that can move forward without internal moisture affecting the curing of exterior coating; resulting with delays.

This process provides light pressure washing in the area to be repaired. Typically we could pressure wash the total tower but this would increase the fees accordingly.

Our pressure washing process would require supply (by owner) potable water for the pressure washing operations. We would require that the owner provide “back flow adaptor” to protect the owner during our on-site work.

Deliverable List for your records:

  • Pre & Post Pressure Washing, Photos and logo/design report
  • NACE Documentation for Coating Application and DFT’s, Photos

Internal liner maintenance repairs require the tower to be fully drained prior to the internal work commencing. The tower must be drained and offline for the duration of the internal liner repairs. This will allow the repairs to move forward without delays.

This process provides light pressure washing cleaning all internal surfaces of the tower, prior to starting the surface preparation.

Our internal repairs will be blasted or power tool surface preparation will depend on level of repairs required and quantities. Our repairs will include; current coating/liner materials to meet the current standards for internal repairs.  Our team will monitor ambient conditions prior to coating application and will hold temperatures for post-curing of the repair areas.

 

Our timeline for completion may vary on the type and location of the tower. An approximate timeline follows:

  • 2.0 Day for Mobilization
  • 1.0 Day for pressure washing (depending on size tower)
  • 5 to 8 days for surface preparation, primer, mid-coat, final coat on all areas.
  • If addition repairs are required days will be added accordingly

Deliverable List for your records:

  • Pre-pressure washing, Photos, cleaning report
  • NACE Documentation for Coating Application and DFT’s, Photos
  • NACE/SSPC Technical Report as required

PROJECT REQUIREMENTS

MISCO’s inspection team will have a NACE Certified Coating Inspector L3 (Peer) and a Certified Engineering Technologist (CET) for determining the overall current condition of the Potable Water Structure. Our hours of operations are flexible to meet the required schedule. Our staff will have all the required training and experience to complete this work on-site.

For internal wet and dry inspections, we require the Cathodic Protection turned off (if applicable), isolate potable water structure, supply key for upper lock, provide access to climbing ladder and a contact person to open facilities.

For exterior maintenance repairs, our firm will supply the required manlift to complete the exterior repair overcoating work and we will supply the required swingstage mob/demob to complete the exterior repair internal work.

Our pressure washing process would require supply (by owner) potable water for the pressure washing operations. We would require that the owner provide the back flow adaptor to protect the team during our on-site work.

Deliverable of Reports for Services:

  • AWWA/NACE Condition Assessment Report
  • ROV Internal Video – (2) USB
  • Photographic summary – numbered and referencing report throughout
  • Exterior coatings and internal lining report and recommendations
  • Safety equipment and recommended upgrades
  • Budget for all recommended upgrades and repairs
  • Pre-pressure washing, photos, and cleaning report
  • NACE Documentation for coating application, DFT’s, and photos
  • NACE/SSPC Technical Report