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Finished Water Storage Tank Inspection and Cleaning Checklist

This tank inspection cheklist is imperative for structurally sound, clean and safe water tanks. Without inspections, issues can arise quickly and sludge can build, compromising the integrity and cleanliness of the tank. Effective inspection and cleaning is crucial for good water maintenance.
MaintainX
07/22/2022

Finished Water Storage Tank Inspection and Cleaning Checklist

This tank inspection cheklist is imperative for structurally sound, clean and safe water tanks. Without inspections, issues can arise quickly and sludge can build, compromising the integrity and cleanliness of the tank. Effective inspection and cleaning is crucial for good water maintenance.

    Fill out one checklist per storage tank & submit labeled photos of each tank component with this form

  • PWS Name:

  • PWS ID:

  • Proposed Inspection Date:

  • Tank Name:

  • Tank ID:

  • Proposed Inspection Date:

  • Actual Inspection Date:

  • Name of Person Filling Out Form:

  • Title of Person Filling Out Form:

  • I certify that this information is complete and accurate:

  • Signature:

    Click here to sign
  • Date:

  • Inspector Qualifications (answer to all questions must be “yes”)

  • Name and contact information of inspector (if water system personnel) or inspection company:

  • Has the inspector completed confined space training?

  • Did the inspector have a confined space entry permit?

  • Overall Tank Condition

  • Significant Deficiency

  • Does the tank appear to be structurally sound?

    • Pass
    • Flag
    • Fail
  • Required Correction

  • If no, what repairs are suggested by the tank inspector?

  • Significant Deficiency

  • Are there any unprotected openings in the tank (breaches, leaks, daylight coming through tank in spots, etc)

    • Pass
    • Flag
    • Fail
  • Required Correction

  • If yes, indicate type of breach and how it should be repaired.

    • Pass
    • Flag
    • Fail
  • Proposed Completion Date

  • Actual Completion Date

  • Air Vent

  • Significant Deficiency

  • Does the tank have a vent separate from the overflow?

    • Pass
    • Flag
    • Fail
  • Required Correction

  • If no, indicate proposed correction:

  • Proposed Completion Date

  • Actual Completion Date

  • Above Ground Tanks (Ground Level or Elevated) Check if NA

  • Significant Deficiency

  • Downturned vent: Is the vent at least 24” or 3 pipe diameters above the roof?

    • Pass
    • Flag
    • Fail
  • Required Correction

  • If no reconfigure vent to provide proper air gap.

  • Significant Deficiency

  • Non‐downturned vent: Is there a solid cover down to the bottom of the vent screen?

    • Pass
    • Flag
    • Fail
  • If no, indicate deficiency and proposed correction:

  • Non‐downturned vent: Is the screen at least 8” above the roof surface? What is the height of the start of the screening above the tank?

    • Pass
    • Flag
    • Fail
  • If no, indicate deficiency and proposed correction:

  • Is the vent covered with #24 mesh corrosion resistant screening (some exceptions apply)? Mesh Size:

    • Pass
    • Flag
    • Fail
  • If no, indicate deficiency and proposed correction:

  • Proposed Completion Date:

  • Actual Completion Date:

  • Buried or Partially Buried Tanks (Check below if NA)

  • Is the vent covered with #24 mesh corrosion resistant screening?

    • Pass
    • Flag
    • Fail
  • Is the vent covered with #24 mesh corrosion resistant screening?

  • Does the air vent terminate downward?

    • Pass
    • Flag
    • Fail
  • If no, re‐configure the vent so that it terminates downward.

  • Is the air vent at least 24” above the tank roof or ground surface (whichever is higher)? What is the height of the vent above the roof or ground surface?

    • Pass
    • Flag
    • Fail
  • If no, raise air vent to provide for an appropriate air gap.

  • Proposed Completion Date:

  • Actual Completion Date:

  • Access Hatch

  • Is the hatch raised at least 4” above the roof (for ground level or elevated tanks) or at least 24 inches above the roof or ground, whichever is higher (for buried or partially buried tanks)? What is the height of the access hatch above the roof or ground surface?

    • Pass
    • Flag
    • Fail
  • Does the hatch have a shoe box lid?

    • Pass
    • Flag
    • Fail
  • Is the lid water tight and sealed with a rubber gasket?

    • Pass
    • Flag
    • Fail
  • Is the hatch locked?

    • Pass
    • Flag
    • Fail
  • Overflow

  • Does the tank have an overflow separate from the vent?

    • Pass
    • Flag
    • Fail
  • If no, indicate proposed correction:

  • Discharge has #24 mesh corrosion resistant screen OR a duckbill valve OR a properly sealed flapper valve with a screen inside (EPA recommends #24 mesh screen)?

    • Pass
    • Flag
    • Fail
  • f no, indicate proposed correction:

  • Overflow terminates between 12 and 24 inches above the ground surface? At what height does the overflow discharge?

    • Pass
    • Flag
    • Fail
  • If no, modify overflow to provide for an appropriate air gap.

  • Overflow discharges over an inlet structure, splash plate, or engineered rip‐rap?

    • Pass
    • Flag
    • Fail
  • If no, indicate proposed correction:

  • Does the overflow have an air gap of 3 or more pipe diameters above the entrance to any storm or sanitary sewers?

    • Pass
    • Flag
    • Fail
  • If yes, indicate proposed correction:

  • Is there blockage in the overflow, an inadequately sized overflow, a malfunction of the level control system, or other issue that is causing the tank to overflow through the hatch or vent?

    • Pass
    • Flag
    • Fail
  • If yes, indicate what is causing the problem and how it should be repaired:

  • Is the overflow discharge point visible? If no, it is recommended that the discharge point be moved to a location that is visible.

    • Pass
    • Flag
    • Fail
  • Drain

  • Does the drain pipe have an air gap of 3 or more pipe diameters above the entrance to any storm or sanitary sewers?

    • Pass
    • Flag
    • Fail
  • If no, indicate proposed correction:

  • Does the discharge have a #24 mesh corrosion resistant screen OR a duckbill valve OR a properly sealed flapper valve with a screen inside? If no, EPA recommends that a #24 mesh screen be installed.

    • Pass
    • Flag
    • Fail
  • Does the drain terminate between 12 and 24 inches above the ground surface and discharges over an inlet structure or splash plate? If no, it is recommended that the discharge point be modified to provide for the appropriate air gap.

    • Pass
    • Flag
    • Fail
Source: MaintainX (Community Member)

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