2019 Salt River Siphon Outage Customer Focus Meeting

Transcription

1 2019 Salt River Siphon Outage Customer Focus Meeting

2 Darrin Francom, PE Engineering Services Department Manager Agenda 1. Overview of the Siphon 2. Review of Repair in Results of 2009 Inspection Project Plan 5. Outage Coordination

3 Location - Orientation Canal To Pipe Transition (Stop Log for Isolation) SRP Arizona Canal SRP South Canal Salt Gila Pumping Plant Pipe to Canal Transition (Stop Log for Isolation)

4 Location - Orientation SRP Arizona Canal Salt River Salt River Siphon CAP Delivery Channel to SRP SRP South Canal

5 Facts 21 foot diameter 8,700 feet long Steel Constructed 1995 Interior Coating: Original Coal Tar Epoxy Repair Devoe 238 Repaired in % of Water Deliveries

6 2001 Coating Repair Project

7 2001 Repair Project Overview: Performed with In-House Crews (All) Two 12 Hour Shifts, 7 Days Per Week Repair of Coating at Welds (abrasion) Found Coating Blistering Planned for 5 weeks

8 2001 Simplified Project Plan Dewater Open Evacuation Structure/ Drain Siphon 8 Million Gallons of Water Remains to be Pumped Open Manholes and Utility Access Holes Install Large Pumps Set Up Ventilation Remove Fish Clean and Inspect Install Portable Scaffolding Water Blast Repair Areas Apply 3 Coats Of Protective Coating

9 2001 Repair Project Siphon Profile Blow Off Manhole River Profile Manhole Pump Elevation 1300 Manhole Evacuation Structure Dewater Pipe Basic Procedure: 1. Open Blow Off & Evacuation Structure 2. Pump Remaining at Manhole(s)

10 2001 Repair Project Evacuation Structure

11 2001 Repair Project Evacuation Structure

12 2001 Repair Project Evacuation Structure & View From Inside Siphon

13 2001 Repair Project Open Manholes, Begin Pumping

14 2001 Repair Project Safety & Ventilation

15 2001 Repair Project Fish Removal

16 2001 Repair Project Abrasion and Corrosion on Welds

17 2001 Repair Project Spot Blistering Full Circumferential Blistering Abrasion and Corrosion on Welds

18 2001 Repair Project Ultra-High Pressure Preparation

19 2001 Repair Project Fabricated Cart for Coating

20 2001 Repair Project Primarily Hand Applied Coating

21 2009 Condition Assessment and Inspection

22 2009 Inspection Blistering of Coal Tar Coating Spot Failure

23 2009 Inspection 3 Coating Layers: Gray RED - Gray Abrasion Welded Joints 4 8 O Clock, Nearly All Joints

24 2019 Project Discussion

25 2019 Repair Project: Challenges Dewatering Fish Handling and Removal: In Channel From Blow-off In Pipe Confined Space Work Undefined Scope - Budgeting Tight 6 Week Schedule

26 Project Planning & Execution Process Work / Project Identification Based on CBM: 2009 Project Approval Through Project Steering Committee: 2016 Stakeholder Engagement: Feb 2017 Project Planning Document: Feb Mar 2017 Place into Work Execution Plan: Mar 2017 Budget in : Apr 2017

27 Project Planning & Execution Process A/E & Contractor Selection: May July 2018 Design and Scoping: July Dec 2018 Construction Bidding & Negotiation: Jan - Feb 2019 Contract Approval: Mar 2019 Execute Contract: Preconstruction Activities: April 2019 Mobilize: Aug Sept 2019 Execute: Oct Nov 2019 Closeout: Nov 2019

28 2019 Repair Project: Anticipated Scope 1. Blow-Off 2. Gain Access and Ventilate 3. Remove Fish 4. Clean / Power Wash 5. Dewater Completes 6. Pipe Inspection 7. Manhole and Specials Inspection 8. Scope Fully Defined 9. Re-Coat all Welded Joints 10. Spot Recoating 11. Final Inspections 12. Acceptance 13. Water-up and Return to Service Week 1 Week 2 Weeks 3-5 Week 6

29 Outage Coordination

30 Coordination of Outage Dates CAP is proposing a 6-week duration for the Salt River Siphon Outage, with a start date between 10/1/2019 and 11/1/2019 For outage dates that start after 10/8/2019 there may be conflict with SRP planned dry ups

31 Coordination of Outage Dates CAP is requesting from customers Preferred start date for the outage Any issues or challenges that might be incurred due to the duration or timing of the identified work. Feedback due by: April 17, 2017

32 CAP Operations Follow Up CAP Operations will follow up today s meeting with a customer letter containing the request for information from customers CAP Operations will continue to work with customers as needed on customer specific issues CAP Operations will notify customers in writing the final dates for the Salt River Siphon Outage (targeting August 2017) CAP Operations may schedule additional customer meetings if needed

33 Feedback from CAP Customers Please provide feedback in writing, only written responses will be considered for project planning Send responses to Or mail to attention Melinda Whittington N. 7 th Street Phoenix, AZ 85024

34 CAP Project Planning CAP will use consider customer responses to Set a start date for outage Coordinate with CAP s Project team for project requirements Allocate water from canal storage for customers Address customer concerns

35 Project Contacts Patrick Dent, Water Control Manger Melinda Whittington, Water Services Specialist or John Hussen, Water Control Supervisor