66" Central conduits Break on Stream Street and PCCP Program.


77 views
Uploaded on:
Category: Food / Beverages
Description
2. Waterway Road 66-Inch Failure Timeline. :December 23: Water Main Failed at 7:50amCCT Emergency Call Center Notified Internal WSSC, Both County Fire Boards and Health DepartmentsMain ShutdownRoss Contracting Awarded Contract for RepairDecember 24: Pepco Completed Power Line RepairRoss Started Pipe RepairsDecember 24-26: Washington Gas Repairs 24-inch Gas Main December 26: WSSC Internally Inspecte
Transcripts
Slide 1

66" Water Main Break on River Road and PCCP Program

Slide 2

River Road 66-Inch Failure Timeline : December 23: Water Main Failed at 7:50am CCT Emergency Call Center Notified Internal WSSC, Both County Fire Boards and Health Departments Main Shutdown Ross Contracting Awarded Contract for Repair December 24: Pepco Completed Power Line Repair Ross Started Pipe Repairs December 24-26: Washington Gas Repairs 24-inch Gas Main December 26: WSSC Internally Inspected 1600 ft. of 66-Inch December 30: WSSC Internally Inspected extra 400 ft. of 66-Inch Repairs/Cleaning of Cabin John Branch December 31: Completed pipe repairs, started chlorination January 1: Opened River Road at 3:00pm January 7: Water tests breezed through lab test 66-Inch Main Back in Service at 5:30pm January 8: Completed outstanding reclamation work, Contractor deactivated

Slide 3

WSSC Water Transmission and Distribution System

Slide 4

Sustainability Plan by Pipe Size Composition and Miles of Pipe in WSSC System/Life Cycle Pipe < 16"- - around 4500 miles of Ductile, Cast Iron, Unlined Cast Iron Pipe > 16"– around 1000 miles of Steel, Cast Iron, Ductile Iron, PCCP Life Expectancy- - 60 Years for Unlined Cast Iron Life Expectancy- - 75-100 Years for Steel, Ductile Iron, Cast Iron, PCCP Inspection/Monitoring/Repair/Replacement Pipe < 16": Current Water Reconstruction Program Ramp up to 60 miles a year Repair/Replace Based on Age, Maintenance History, Fire Flow Issues Pipe 16" – 36": Adding to our Water Reconstruction Program Ramp up to 15 miles Cast Iron has low break rate, however maturing is element now Pipe Above 36": Inspection and Monitoring are Key -Iron - Corrosion control, Valve & Fire Hydrant MX -PCCP - Problematic; Fails Catastrophically Without Warning

Slide 5

PCCP Program History 1981- - PCCP Condition Assessment and Inspection Program started - initially utilized Visual and Sounding to distinguish crumbled territories and delaminations Late 1980\'s- - WSSC worked with experts and concentrated on pertinent non-damaging testing strategies Mid-1990\'s- - Sonic/Ultrasonic Pulse Echo was adjusted to PCCP and added to the Program- - recognizes smaller scale splitting and concrete out of pressure. 2001- - Electromagnetic (RFEC/TC) testing was added to the Program- - gauges number of softened pre-focusing on wires up every pipe area Early 2007, perpetual Acoustical Fiber Optic (AFO) observing initially introduced - screens wire breaks taking after a pattern condition appraisal In late 2008, acoustical hole identification strategies were added to the Program to be performed before dewatering for the reviews Approximately 116 miles inside examined to date; AFO at present introduced in 16.9 miles

Slide 6

PCCP Inspection History

Slide 7

PCCP Current Program WSSC has a sum of 357 miles of Pre-focused on Concrete Cylinder Pipe (PCCP) Water Mains including: 57 miles – 54" and Greater 86 miles – 36" through 48" 214 miles – 16" through 30" Annual assessment plan depends on hazard rating appointed to 36" and bigger (143 miles) Risk rating in view of pipe breadth, age, arrive utilize, operational criticality, repair history and date keep going investigated Program concentrates on mains 54-inch and more noteworthy - considered a higher hazard because of their measurement, operational criticality, and most elevated outcome of disappointment Current condition of the business for non-damaging PCCP examination methods requires manual operation and kept an eye on passage into the pipelines to play out the inspections      Virtually all WSSC PCCP water mains 54-Inch and more prominent have been assessed 1-3 times; the more tricky mains have been assessed 4-5 times

Slide 8

PCCP Current Program Inspection incorporates visual and sounding, sonic/ultrasonic, electromagnetic overview, acoustical release testing, long haul acoustical checking Establishes standard condition, finds spills, distinguishes required repairs/swaps and anticipating long haul capital substitutions Engineering investigation done to figure out whether decayed channels require supplanting or can be repaired with carbon fiber inside or ligaments remotely Permanent acoustical checking listens for extra wire break action as early cautioning sign and build up rate of disintegration Inspections take 2-3 months to perform Shut down and dewater pipeline amid colder months September through June when request is lower During higher central pipe break season Cost per 12 miles for investigation and establishment of Acoustical Fiber Optical Monitoring – $3 M

Slide 9

Inspection Interval and Annual Mileage Preferred assessment interim for PCCP pipelines is 5 to 10 years; 5 years for 48" or more to 10 years for underneath 48" FY\'07 and FY\'08 PCCP Program mileage spending plan was 6 miles investigation and 6 miles of establishment of Acoustical Fiber Optic (AFO) observing; brings about insufficient and high hazard 12 year investigation interim At 12 miles for every year, the 48" and bigger pipelines would be on a close ideal examination interim of 6 years  In FY\'09, the Counties endorsed spending supplement to expand the PCCP mileage to 12 miles assessment miles and AFO installation 

Slide 10

Five Year Plan FY\'09 – 12 Miles – 1)Project 80 96-Inch and 2)River Road 66-Inch FY\'10 – 12 Miles – 1)Rock Creek 54/60-Inch and 2)Failed Mont. Co. 48-Inch FY\'11 – 12 Miles – 1)Mont. Co. High Zone 60-Inch and 2)White Oak 72-Inch FY\'12 – 12 Miles – 1)Prince George\'s 54/60-Inch Supply Main, 2)Brightseat 54-Inch 3) I-270 FY\'13 – 18 Miles – Mains under 48-Inch

Slide 11

Looking Ahead To close crevice made by diminished investigation program in FY\'00 to FY\'06, increment mileage objectives to 18 miles FY\'12-FY\'13 for 48" and bigger Steady-state reviews of 12 miles continues in FY\'14 FY\'11 CIP – Study/Design for Rehabilitation of 60-Inch Adelphi Main For distances across littler than 48-inch, innovation improvements (assessed at FY\'12 and past) may permit: Unmanned examinations with the pipe full/halfway brimming with water utilizing momentum strategies adjusted to littler pipe May not require acoustical checking, be done at a lower cost in a shorter time allotment and at a 10 year interim

Slide 12

Advancing Electromagnetic Techniques for PCCP < 48-Inch Adaption of Current Technology to Diameters under 48-inch. Automated (Unmanned) Electromagnetic P-Wave for Small Diameter PCCP (< 48")for use in Submerged Conditions

Slide 13

Small Diameter Underwater Adaptable Visual Inspection Tool Unmanned Underwater Small Diameter (< 48") Pipe Visual Inspection Tool – Adaptable to different Technologies Fiber Optic Communication Cable/Tether High Power Lighting and Cameras

Slide 14

Sustainable PCCP Program A reasonable PCCP Inspection and Condition Assessment Program is Critical to the Mission of WSSC A part of WSSC\'s Infrastructure Renewal Plan Ensures convenient investigation and repair of disintegrated pipe areas Provides more secure, more dependable water supply Helps guarantee the pipelines achieve their proposed valuable life Provides condition appraisal for long haul capital arranging Program must be a top spending need and subsidized every year to guarantee open wellbeing and unwavering quality of the water supply

Slide 15

Questions

Recommended
View more...