Attachment 0008 - PBA Tower B Inspection Report.pdf

MIT DIVING AND COATING

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

SSPC Rating’s Key Description - Good Condition 10 - No Rusting, or <0.01% of surface is rusted 9 - Minor rusting, or <0.03% of surface is rusted 8 - Isolated rust, <.01% of surface is rusted

Description - Fair Condition 7 - Isolated rust, <.03% of surface is rusted 6 - Extensive rusting, <1% of surface is rusted 5 - Approximately 3% of the surface is rusted

Description - Poor Condition 4 - Approximately 10% of the surface is rusted 3 - Approximately 17% of the surface is rusted 2 - Approximately 33% of the surface is rusted 1 - Approximately 50% of the surface is rusted 0 - Approximately 100% of the surface is rusted

Quadrant 2

Exterior Upper Wall Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Exterior Middle Wall Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Exterior Lower Wall Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Interior Upper Wall Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Interior Middle Wall Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Interior Lower Wall Panel Condition

Quadrant 3 Quadrant 4

Delamination Blistering

Chalking Staining

Cracking Pinholes

Cratering Sags/Runs

Additional Comments

Overall Coating Condition

Overall Coating Deficiency’s

Int. Roof Ext. Roof

Overall Weld Condition

Ext. Floor

Int. Roof Ext. Roof

Int. Floor Ext. Floor

Utility Name Date

Dive Control/Supervisor Diver/Inspector Tender

. Floor

Tower B Pine Bluff Arsenal 08/17/2020

Mike Smith Marcus Delgato Ben Pisocki

8 8 8 8

Good Good Good Good

8 8 8 8

Good Good Good Good

8 N/A N/A N/A

Good Good Good Good

7 5 7 7

Fair Fair Fair Fair

7 5 7 7

Fair Fair Fair Fair

7 5 7 7

Fair Fair Fair Fair

Fair Good

Fair Good

Large Concentrated Cell Corrosion nodes at 0530. 1" X 1"

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

Quadrant 1

Utility Name Date

Dive Control/Supervisor Diver/Inspector Tender

SSPC Rating’s Key Description - Good Condition 10 - No Rusting, or <0.01% of surface is rusted 9 - Minor rusting, or <0.03% of surface is rusted 8 - Isolated rust, <.01% of surface is rusted

Description - Fair Condition 7 - Isolated rust, <.03% of surface is rusted 6 - Extensive rusting, <1% of surface is rusted 5 - Approximately 3% of the surface is rusted

Description - Poor Condition 4 - Approximately 10% of the surface is rusted 3 - Approximately 17% of the surface is rusted 2 - Approximately 33% of the surface is rusted 1 - Approximately 50% of the surface is rusted 0 - Approximately 100% of the surface is rusted

Quadrant 2

Interior Roof Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Exterior Roof Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Internal Roof Support

Quadrant 3 Quadrant 4

Quadrant 2

Interior Floor Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Exterior Floor Panel Condition

Quadrant 3 Quadrant 4

Quadrant 2

Support Columns

Quadrant 3 Quadrant 4

Overall Coating Condition

Int. Roof Ext. Roof

Int. Floor Ext. Floor

Overall Weld Condition

Int. Roof Ext. Roof

Int. Floor Ext. Floor

Overall Coating Deficiency’s

Delamination Blistering

Chalking Staining

Cracking Pinholes

Cratering Sags/Runs

Additional Comments

Tower B Pine Bluff Arsenal 08/17/2020

Mike Smith Marcus Delgato Ben Pisocki

5 5 5 5

Fair Fair Fair Fair

7 8 8 8

Fair Good Good Good

5 5 5 5

Fair Fair Fair Fair

7 7 7 7

Fair Fair Fair Fair

6 6 6 6

Fair Fair Fair Fair

5 5 5 5

Fair Fair Fair Fair

Plumbing Locations and Condition

Quadrant One Quadrant Two Quadrant Three Quadrant Four

SSPC Rating Corrosion SSPC Rating Corrosion SSPC Rating Corrosion SSPC Rating Corrosion

Inlet Plumbing

Outlet Plumbing

Manways

Interior Overflow

Floor Drains

Sediment Depths & Plumbing Locations

Sediment Depths

Average Depth of sediment

Sediment Type

Plumbing Locations & Plumbing Identification Key

O = Outlet I = Inlet M = Manway V = Vent D = Drain S = Sump L = Ladder H = Hatch X = Overflow F = Float Level Indicator T = Telemetry C = Column

Additional Comments

6 Fair N/A N/A N/A N/A N/A N/A

6 Fair N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

N/A N/A N/A N/A N/A N/A N/A N/A

5"

5"5"

5"

5" 5"

5" 5"

5"

5" 5"

5"

5"

Additional Reservoir Components

Primary Manway Condition Size Location

Primary Air Vent Type Condition

Exterior Overflow Location

Cathodic Protection Installed

Water Level Indicator Condition

Primary Access hatch Condition

Exterior Ladder Condition Rail to Rail Rung to Rung

Rail Width Rail Length

Railings

Roof Integrity Cracks Structural Condition

Wall Integrity Cracks Structural Condition

Antennas

Holes

Holes

Present Obstructs Work Site Antennas Offline

Hypalon Floating Cover Present Condition

Inspection Supplemental Report and Additional Information

Condition

Amount of Penetrations

Size

Condition

N/A N/A N/A

Mushroom Yes Good

Quadrant 3 Good

Yes Yes

Fair Float

Good 36"

Fair 14" 12" 9"

2" 1/4"

Yes Good

No No Good

No No Good

No N/A N/A

N/A N/A

Upon initial entry, the tank appeared to be in moderate condition with minor levels of corrosion, staining, and chalking along the floor and walls. The sediment was measured at 5" deep during the cleaning process. After cleaning we noticed more Staining, blistering, and uniform surface corrosion on both the floor and walls. At about the 6 Oclock there was a 2x2" rust nodule. There was no trash rack present on the Inlet/Outlet. The weld seem had some concentrated cell corrosion and could you some epoxy repair. The Cathodic protection entered the tank about the 9 Oclock. The 1" pipe the wires come through was plugged up with concentrated cell corrosion. The ladder appeared to be in fair condition, with staining, blistering, and concentrated cell corrosion. The overflow appeared to be in good condition, with minor staining. The hatch appeared to be in fair condition, with staining and corrosion on the hardware.

The Interior roof has large amounts of uniform surface corrosion.

float guide cable was fine, team replaced step off bracket to secure float level indicator.

We would like to thank you for choosing MIT diving, and we recommend having your tanks cleaned and inspected every three to five years.

Recommend one day epoxy repairs below water level.

spot prime repair rafters and spots on upper walls above water level as budget allows.