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HomeMy WebLinkAboutItem No. 14 PPP 12-07-2022 Operations Committee - Lido Pump Station East Force Main Leak Update12/7/2022 12/7/2022 • • Force Mains Overview Balaoa Coves LIDSSDIZDEO / LID- 2N O West force main ` Built in 1968 AR Rehab in 2016 = m East force main Built in 1959 and 1992 Rlalte � LID55 D p� Rehab in 2016 (� East & West force mains Lido 7Dm¢, Built in 1997 3 3 • West force main was in operation • Wednesday (11/2/22) - Switched from West to East force main • Friday (11/4/22) - Leak reported, standby crew responded and approx. 10,000 gallons spilled • Standby crew switched back to West force main, leak stopped • Currently operating with West force main M 2 12/7/2022 5 • Initial CCTV was performed on 11/16/22 to locate break • Approximately 142 feet of East force main was inspected • Inspection stops at a junction joint • Additional 416 feet of CCTV was performed from where pipe was excavated and removed A Lido Force Main CCTV NEWPORT BEACH LIDO PUMP STATION PMP STN Downstream GRAVITY MH 14- Ducti-e Iro 09:51 20i11 -16 Lido Force Main CCTV NEWPORT BEACH LIDO PUMP PMP STN Downstream GR i r 102.9 FT Ducti1F _ _ NEWP0%1 B.E_:RCH LIDO PUMP-aTRT1.ON PMP'S,TN="Down'tr,e am GR [TY MH , r- s ryl t>ig�f e' .g i DUCtI Ise . 55 "-2022iL1; T 12/7/2022 • Opened a project to repair the pipe • Setup Traffic Control • Excavate to further assess the external pipe condition P7 10 5 12/7/2022 • Damaged pipe was cutout and replaced • Couplings were concrete encased, pipe exterior wax -taped • Force main was pressure tested • Excavation site being restored 11 Asset Management - Force Main Condition Current force main remaining useful life scores are theoretical and adjusted per condition assessment(s) Collection System Components Pumping Station Manhole Gravity Force Sewer Main Gravity Sewer 12 -• RUL: < 5 years .• RUL: 5-10years F 3 ]• RUL: 11-15years -• RUL: 16 — 20 years .• RUL: > 20years RUL = Remaining Useful Life W 0 12/7/2022 Asset Management - Force Main Reliability Key Issue: Force mains are often difficult to inspect & have a high consequence of failure (COF) ��•_ l Asset Management Actions: • Develop plan to inspect all force "m+ mains.: ` • Prioritize inspections (Risk & COF) • Evaluate frequency of inspection Path Forward: • Use existing Condition Assessment Contracts and internal resources • Planning Study for locations that „mf� require additional support 13 13 14 7