HomeMy WebLinkAbout09.a. (Handout) Receive update on DAF Tank No. 1 emergency declared on May 2, 2013q.0. -
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Item 9.a
DAF TANK N0. 1
EMERGENCY REPAIR UPDATE
Craig Mizutani, P.E.
Senior Engineer
May 16, 2013
Central Contra Costa Sanitary District
Work To Date
• April 19 - DAF Tank No. 1 Failed
• April 22 - Tank Inspected By Case /Cotter
• April 24 - CCCSD Staff Begins Repair
- Remove Arms
- Cut Off Track
• April 26 - P.O. Issued To Case /Cotter For Arms
• April 29 - D.W. Nicholson Directed To Order Material
• May 2 - Board Authorizes Emergency Repairs
• May 3 - Work Begins
- Sandblasting (F.D. Thomas)
- Mobilization D.W. Nicholson
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Inspection April 22, 2013
• Inspection Sandblast Completed May 9
Structural Inspection May 10
- Main Beams Ok
- Cross Beams And Supports Require
Replacement Prior To Coating
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Sandblast! ng/I nspection
Tank Repair Progress
• Damaged Baffle
Section Removed And
Replaced
• New Track Installed
• Replacement Arms
Being Fabricated
• Clutch On DAF Tank
No. 3 Replaced
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Schedule Update
• All Steel And Welding Repairs: May 17
• Sandblasting And Coating: May 20 - 29
• Install Arms, Adjust, Test: May 29 - June 5
• Original Startup Anticipated: May 27
(Additional Time Required For Structural Repairs)
Staff Recommendation
• Continue Emergency DAF Tank Repairs
Utilizing Case /Cotter Inc., D.W. Nicholson
Corp., And District Forces
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