HomeMy WebLinkAboutPPP Operations 09-05-18 - Ocean Outfall System Rehab Project No. J-117 Iwo 46
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Ocean Outfall System Rehabilitatio
Project No . J - 117
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Ocean Outfall System Rehabilitation
Project No . J =117
1. J-117A Interplant Effluent Pipeline Rehabilitation
Construction Contract Awarded June 2017 ($12.6 mil)
2 . J-117B Outfall Low Flow Pump Station ($76 mil )
• Rehabilitation Ocean Outfall Booster Pump Station
• New Outfall Low Flow Pump Station
• Replace Plant Water PS for GWRS Final Expansion
• Power Distribution Switchgear Upgrades Added
Nov 2016
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3 . P2-107 SCADA System and Network Upgrades
Ocean Outfall System Rehabilitation, Project No. J -117
2.2 PLANT WATER PS
LOW FLOW PS9CE us • •
AN014FQIL
OCEAN OUTFALL �.: __ PIPELINE
BOOSTER STATION
(OOBS) REHAB
.,- , REPLACE . ,llltllllllil
- CEN GEN
ELECTRICAL < y
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f REPLACE EXISTING
PLANT WATER _ a
PUMP STATION
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Lit m RECLAIMABLE FLOWS _
y NON-RECLAIMABLE FLOWS
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Load S
WEATHERDR17W'EATHER WET
TOTAL LOAD 7 MW 10-13 MW
CEN GEN CAPACITY 4-6 MW g MW LOAD SHEDDING METHODS:
CEN GEN OVERLOADED ON ' CONTINGENCY BASED (EVENT DRIVEN)
POWER IMPORTED 1-3 MW 1-4 MW UTILITY POWER OUTAGE ' BACKUP FREQUENCY
PARTIAL TRIPPING Standby Standby LOADS WITH
OF DOWNSTREAM STANDBY POWER
LOADS (TYPICAL) Generators ��� Generators
Ocean Outfall (TYPICAL)
Pump Station Headworks
Effluent
Pump Station Primary
Annex
Clarifiers
PLANT PRIMARY
POWER SOURCES
City Water OOOOOO Activated
Pump Station Sludge
Utility Central Generators
Standby it (5) 3 MW, (1) 1 MW
Generators
Centrifuges Trickling
Filters
Gas Compressors
NON-CRITICAL /Primary Effluent Digesters Standby
LOAD Pump Station
Generators
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Adopting. Latest Substation Technolog, y
LOAD SHEDDING CONTROLLER I
MEDIUM-VOLTAGE SWITCHGEAR
VIRTUAL MAIN
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I I
_. I ARC-FLASH
PROTECTION
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ADOPTING THE LATEST I GOOSE
SUBSTATMNAUTOMATION I MESSAGING I -
TECHNOLOGY: IEC 61850 WITH
GENERIC OBJECT ORIENTED I I 12KV-480VTRANSFORMER
SUBSTATMON EVENT
raa I
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- - - - - - _ VIRTUAL MAIN
REDUCES ARC FLASH
�;+ s LOW-VOLTAGE SWITCHGEAR
Plant 2 - 12kV Electrical System
12KV SERVICE CENTER SWITCHGEAR WITH LOAD SHEDDING
. — . Bus A — . . . . . . . . . . . . . . . . . .Bus B — J P2-107
CENTRAL GENERATION SWITCHGEAR
r - • • - - - • - • - - • - - • - • - - - • - - - -
Bus
L fEF4LUENT
Bus G1 — — Bus G1 Bus B
TRIBUTIONCENTER C OOBS J-117B
usA Bus BI
PUMP STATION ANNEX
. — . sA — . — — —Bus . _ I
DC `BLJACTIVATED SLUDGE
� . — . —Bus A Bush
- - - - - - - - I
DC `H' (HEADWORKS)
Bus I Bus B P2-107
DC`J'.(TRICKLING FILTERS
r - - - - - - • - - - - - -
s B
� . — . _ BusA B_ — . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
DC `K' (CENTRIFUGE)
BusA Bus 6
Other Benefits of Combining Projects: Similar work, IT room in OOBS, concurrent schedule, and reduced soft costs.
J =11713 and P2 =107 Plant 2 Site Plan
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Recommendations
• Approve a contingency increase of $474,461 (7%) to the Professional
Design Services Agreement with Brown and Caldwell for Ocean Outfall
System Rehabilitation, Project No. J-117, for a total contingency of
$4,202,368 (62%).