INSPECTION_REPORT.pdf

PDF 4 MB Posted

Attached to
Corrective Maintenance North Elevated Water Tower
Solicitation number
242547TEG
Issued by
Sarasota County, Florida

About this file

The document is a comprehensive 2,000,000 Gallon Fluted Column Tank Inspection Report prepared by TankRehab, LLC for Sarasota County Utilities, located at 1850 Wendall Kent Rd in Sarasota, Florida. The inspection was conducted on June 20, 2023, by Tom Donovan and covers a water storage tower manufactured by Pitt-Des Moines, Inc. in 1997, with a contract number 56174. The report provides a detailed assessment of the tank's exterior and interior coating conditions, safety features, sanitation, and structural integrity, highlighting various areas requiring maintenance and potential corrective actions.

The inspection reveals that the tank is currently in fair condition, with several recommendations for improvement. Key findings include isolated coating failures on the exterior roof and interior surfaces, corrosion around vent openings, and the need for safety upgrades such as replacing ladders, installing safety climbing devices, and addressing roof vents and access hatches. The estimated budgetary considerations for these improvements total approximately $339,000, covering spot repairs, ladder replacements, safety climb installations, and roof vent replacements. The report suggests that the tank should be inspected every year for corrosion control maintenance and that the sludge and sediment build-up should be removed from the tank every two years.

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2030 E. Adams St.

Jacksonville, Florida 32202

(904)551-9293 contact@tankrehab.com

2,000,000 Gallon Fluted Column Tank Inspection Report

North Tower #56124

Prepared For:

Sarasota County Utilities 1850 Wendall Kent Rd Sarasota, FL

Prepared By:

Tom Donovan June 2023

ATTACHMENT A - INSPECTION REPORT

2,000,000 Gallon Fluted Column Tank Inspection Report 1 Sarasota, Florida

General Information

INTRODUCTION:

On June 20, 2023, Tom Donovan of TankRehab.com, LLC, performed a washout and inspection on a 2,000,000-gallon Elevated Water Storage Tank as required by FAC 62-555.350. This report fulfills the requirements of FAC 62-555.350 for the water storage tank located at 1850 Wendall Kent Rd, Sarasota, FL. The inspection was completed to determine the condition of the coatings, safety, sanitation and structural.

TANK DETAILS

CAPACITY: 2,000,000 Gallons DESIGN: Elevated

INSPECTION

DATE:

June, 2023 INSPECTOR: Tom Donovan

CONSTRUCTION

STYLE:

Welded CONSTRUCTION

DATE:

BUILDER: Pitt-Des Moines, INC Contract #56124

HEIGHT/

DIMENSION:

115 ft High B.C.L.

/100 ft Dia

EXTERIOR

COATING:

Acrylic Polyurethane EXTERIOR

LEAD PRESENCE:

unknown

INTERIOR

COATING:

Epoxy INTERIOR

LEAD PRESENCE:

unknown

2,000,000 Gallon Fluted Column Tank Inspection Report 2

Exterior Coating Conditions

TANK ROOF

The exterior coating system is in fair condition. The exterior coating system was noted for isolated coating failure and should be corrected as soon as scheduling permits.

Protective coating system thickness range: 15.2 to 31.1 mils; Average of 22.54 mils

TANK BOWL

The coating system on the tank bowl is in good condition.

Protective coating system thickness range: 15.2 to 31.1 mils; Average of 22.54 mils

TANK SIDEWALLS

The exterior coating system on the tank sidewalls good condition.

Protective coating system thickness range: 15.2 to 31.1 mils; Average of 22.54 mils

RECOMMENDATIONS

The exterior coating is in good condition. It is recommended to spot repair the isolated coating failures to prevent costly metal loss.

2,000,000 Gallon Fluted Column Tank Inspection Report 3

Interior Coating Conditions

ROOF AND AREA ABOVE HIGH WATER LEVEL

The interior coating system on the roof and the area above the highwater level is in fair condition. Isolated areas of coating failure and corrosion were noted on the roof of the tank at the connection points and angles.

Protective coating system thickness range: 13.6 to 32.7 mils; Average of 22.10 mils.

SIDEWALLS

The interior coating system on the tank sidewalls is in fair condition. The interior epoxy coating system is currently protecting the sidewall.

Protective coating system thickness range: 13.6 to 32.7 mils; Average of 22.10 mils.

BOWL

The interior coating system on the tank bowl is in fair condition. The interior epoxy coating system was noted for having small blisters along random areas of the tank bowl.

Protective coating system thickness range: 13.6 to 32.7 mils; Average of 22.10 mils.

RECOMMENDATIONS

The interior coating system was noted for isolated coating failure and should be corrected as soon as scheduling permits.

SSPC-7 surface prep to identify failed protective coatings followed by a spot and full finish coat will prolong the interior protective coating.

2,000,000 Gallon Fluted Column Tank Inspection Report 4

DRY

FLUTED COLUMN

The interior coating system is in fair condition. Corrosion occurring around the vent openings.

Protective coating system thickness range: 5.1 to 13.6 mils; Average of 9.84 mils.

BOWL

The interior coating system on the bowl is in good condition. The interior epoxy coating system is currently protecting the bowl of the tank.

Protective coating system thickness range: 5.1 to 13.6 mils; Average of 9.84 mils.

DRY RISER

The interior coating system on the dry riser is in good condition. The interior epoxy coating system is currently protecting the dry riser of the tank.

Protective coating system thickness range: 5.1 to 13.6 mils; Average of 9.84 mils.

RECOMMENDATIONS

dry for isolated coating failure and should be corrected as soon as scheduling permits.

2,000,000 Gallon Fluted Column Tank Inspection Report 5

Safety, Sanitation, and Structural Conditions

SAFETY

Ladders

The interior wet ladder and safety climb is in need of replacement.

The column ladders need fall prevention safety cable climbs.

Balcony, Balcony Railing

The balcony and balcony railing are in good condition.

Aviation Warning Lights

This tower is equipped with aviation warning lights. Operation was not confirmed during this inspection.

Tank Access Hatch

The tank access hatch is a manway. The access hatch is in need of repair or replacement. The access hatch was not locked at the time of the inspection.

Secondary Access Hatch

This tower is equipped with a secondary access hatch.

2,000,000 Gallon Fluted Column Tank Inspection Report 6

SANITATION

Roof Hatch

The 30 roof hatch should be repaired/replaced during the next renovation with a minimum of 30 inches and that it should be fitted with a solid watertight cover which overlaps the framed opening and extends down around the frame a minimum of two inches to prevent contaminated rainwater from entering the tank.

Roof Vent

The two roof vents need replacement.

Overflow

The overflow pipe needs screen installed.

STRUCTURAL

Foundations

The concrete foundation was found to be in good condition.

Bowl

Steel thickness range: .516 to .517 inch.

Anchor Bolts

The anchor bolts appear to be tight and in good condition.

2,000,000 Gallon Fluted Column Tank Inspection Report 7

SECURITY

Security Fence

This tank site contains a locked security fence.

Ladder Gate

The access contains a lockable door to prevent unauthorized access into the column.

Locked Roof Hatch

The roof hatch was not locked at the time of our inspection.

2,000,000 Gallon Fluted Column Tank Inspection Report 8

SUMMARY AND RECOMMENDATIONS

SUMMARY

Overall this water storage tower is in good structural condition. The exterior coating system should be spot repaired as soon as scheduling permits. The interior coating system should be spot repaired as soon as scheduling permits. Active corrosion on the exterior roof and should be stopped to prevent costly steel replacement.

RECOMMENDATIONS

Spot coating repair interior and safety climb.

Spot coating repair exterior roof.

Replace roof vents and overflow screens.

BUDGETARY CONSIDERATION

$275,000.00 to spot repair and full finish coat $18,500.00 to replace ladder .

$13,000.00 to spot repair exterior roof.

$16,000.00 to supply/install ladder safety climbs on

$20,000.00 to replace (2) roof vents and overflow screen.

$6 hatch.

2,000,000 Gallon Fluted Column Tank Inspection Report 9

2,000,000 Gallon Fluted Column Tank North Tower

2,000,000 Gallon Fluted Column Tank Inspection Report 10

Photo #1 Support column at ground level corrosion.

Photo #2 No screen on overflow.

2,000,000 Gallon Fluted Column Tank Inspection Report 11

Photo #3 Mildew around bottom of column.

Photo #4 Protective coating failure.

2,000,000 Gallon Fluted Column Tank Inspection Report 12

Photo #5 Grounded tank/corrosion.

Photo #6 Exterior protective coating system.

2,000,000 Gallon Fluted Column Tank Inspection Report 13

Photo #7 Exterior protective coating system on tank roof.

Photo #8 Minor delamination/corrosion on tank roof.

2,000,000 Gallon Fluted Column Tank Inspection Report 14

Photo #9 Minimal protective coating failure on roof.

Photo #10 Corrosion causing metal loss.

2,000,000 Gallon Fluted Column Tank Inspection Report 15

Photo #11 Roof vents in need of replacement.

Photo #12 Roof vents in need of replacement.

2,000,000 Gallon Fluted Column Tank Inspection Report 16

Photo #13 30 in need of replacement.

Photo #14

2,000,000 Gallon Fluted Column Tank Inspection Report 17

Photo #15 Protective coating failure on angles and cathodic hand holes in roof.

Photo #16 Protective coating failure in roof.

2,000,000 Gallon Fluted Column Tank Inspection Report 18

Photo #17 Before washout.

Photo #18 After washout.

2,000,000 Gallon Fluted Column Tank Inspection Report 19

Photo #19 distribution

Photo #20

2,000,000 Gallon Fluted Column Tank Inspection Report 20

Photo #21 Cathodic protection in tank was not confirmed operational.

Photo #22 Obstruction lights off. Roof hatches shut before exiting roof.

2,000,000 Gallon Fluted Column Tank Inspection Report 21

Photo #23 View of

Photo #24

2,000,000 Gallon Fluted Column Tank Inspection Report 22

Photo #25 View of Bowl of tank.

Photo #26 Condensate blanket in good condition.

2,000,000 Gallon Fluted Column Tank Inspection Report 23

Photo #27 Anchor bolts are tight.

Photo #28 Ladders need safety climbing device.

2,000,000 Gallon Fluted Column Tank Inspection Report 24

Photo #29 Access to tank locked.

Photo #30 Access to tank site locked.

File details come from the government source that posted it. Updated .