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
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