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Briefing – Cathodic Protection Rehabilitation – Insulated Flange Vaults

Briefing – Cathodic Protection Rehabilitation – Insulated Flange Vaults. San Joaquin Field Divisions – Coastal Branch Spec. No. 13-13 Contract No. C51477 Presented By: Kevin M. Gray Date: 6/25/2013. Introduction. Purpose

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Briefing – Cathodic Protection Rehabilitation – Insulated Flange Vaults

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  1. Briefing – Cathodic Protection Rehabilitation – Insulated Flange Vaults San Joaquin Field Divisions – Coastal Branch Spec. No. 13-13 Contract No. C51477 Presented By: Kevin M. Gray Date: 6/25/2013

  2. Introduction • Purpose • To provide full restoration of cathodic protection and access to the discharge pipelines at Devil’s Den, Bluestone and Polonio Pumping Plants. • Background • Constructed from 1993 to 1998 as part of the Phase II Coastal Branch Aqueduct • CAX Plants and 57 inch I.D. buried steel pipelines lift water 1,500 feet and 134 cfs to Polonio Pass Water Treatment Plant • Existing Insulating flanges: • Do not isolate the pipelines • Historically have required frequent repairs • No means of repairing insulator / gasket • Buried with no direct access for required maintenance

  3. Location Map Coastal Branch – CP Rehabilitation 2013

  4. San Joaquin Field Division Devil’s Den Pumping Plant Bluestone Pumping Plant Polonio Pass Pumping Plant

  5. Cause of Pipeline CP Potential Drop Existing Valve Vault Existing Pumping Plant Existing Discharge Line Existing Insulating Flange

  6. Historical Repairs

  7. Excavate, Demolish Concrete, Expose Flange, & Repair Damaged Bolt

  8. Construct Concrete Formwork For Placement

  9. Cast-In-Place Concrete Encasement Around Flange

  10. Resurface with HMA

  11. Insulated Flange Kit

  12. Typical Profile New Insulated Sleeve Coupling Existing Access Vault New Insulated Flange Vault Existing Valve Vault 57” I.D. 48” O.D. Existing Meter Vault Demolish Existing Concrete Encasement

  13. Insulated Sleeve Coupling Simplicity of Installation A wrench is only required tool No pipe end preparation required Greater Flexibility Allows up to 6° of deflection / articulation 3/8” absorbed in contraction & expansion Versatility Couplings act as flexible unions in pipe Access for maintenance at valves & pumps Provide CP isolation on steel pipelines Save $$$$ Easily available Costs saved on installation and material Gasket Follower Ring and Middle Ring Bolts Insulating Neoprene Boot

  14. Summary of Work • Excavate and remove concrete around outlet flanges at Devils Den PP, Bluestone PP, and Polonio Pass PP. • Replace existing insulating flange kits with new nuts, bolts, washers, and gaskets. • Install new insulated sleeve couplings downstream of flanges. • Construct concrete access vault around each plant's insulator. • Reconstruct corrosion test station at each plant. • Install surge protection device across couplings.

  15. Project Timeline

  16. SJFD – Project Budget

  17. DWR Documents • Complete Specification Transmittal • Complete Memorandum of Compliance • Complete Environmental Permit Memorandum • Complete Green House Gas Analysis • Complete Liquidated Damages • Complete Contract Drawings • Complete End of Design Cost Summary • Complete Right of Way • Complete Authority to Advertise

  18. Significant Items • Safety – ADA, OP-2, confined space access, and clearances at related DWR facilities • Funding Sources: • SJFD: 100% State Water Project (CWRDBF) • Environmental – the work in this contract is exempt from CEQA as maintenance repairs. • Right of Way: • Limits of construction shall be within DWR’s existing right of way.

  19. Contacts Operations and Maintenance – Corrosion (O&M) Tim Kennelly 916-653-1328 tkennell@water.ca.gov Robert Reis (Project Manager) 916-653-4740 reis@water.ca.gov Dan Salyers 916-653-8484 salyers@water.ca.gov Division of Engineering (DOE) Joe Barron 916-651-9829 barron@water.ca.gov Kevin M. Gray (Job Manager) 916-653-8852 kgray@water.ca.gov Joe Killen 916-653-6990 jkillen@water.ca.gov San Joaquin Field Division (SJFD) Jeff Said (Program Manager) 661-858-5554 said@water.ca.gov Terry Stutz (Project Manager) 661-858-5590 terrys@water.ca.gov Real Estate Branch Jasbir Gill 916-651-6757 jgill@water.ca.gov Environmental Chris Erikson 916-653-9734 chrise@water.ca.gov Project Safety Albert Romero 916-708-3983 alromero@water.ca.gov Contract Development Jim Veres 916-657-4464 jimveres@water.ca.gov

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