NDLI: EBMUD Walnut Creek Raw Water Pumping Plants electrical safety improvements project - Turning a bad situation into an opportunity (case history)

Content Provider	IEEE Xplore Digital Library
Author	Hernandez, D.V. Handran, D. Mah, S.L.
Copyright Year	2014
Description	Author affiliation: East Bay Municipal Utility District, Oakland, CA, USA (Hernandez, D.V.; Handran, D.; Mah, S.L.)
Abstract	In February 2011, construction had just begun on a planned electrical safety improvements project at the East Bay Municipal Utility District's Walnut Creek Raw Water Pumping Plants (WCPP Nos. 1&2) when the electrical substation powering the facility was destroyed by a fault. This was followed a month later by a flood that completely filled the building that houses WCPP Nos. 1&2, submerging six large synchronous motors, pumps, and related electrical distribution equipment. These nearly simultaneous catastrophic events dramatically expanded and redefined the scope of the planned work. An immediate priority was to rebuild the electrical substation within 12 months so that the District could restore power to the undamaged WCPP No. 3 in order to meet anticipated summer pumping demands. A longer-term priority was to completely rebuild the pumps and motors, and replace the station service motor control centers, switchgear lineups, controls, and heating, ventilation and air conditioning system at WCPP Nos. 1&2 within the next 24 months. This paper presents how these two incidents happened and discusses how they were turned into an enhanced safety design opportunity.
Sponsorship	IEEE Ind. Appl. Soc.
Starting Page	1
Ending Page	8
File Size	1090938
Page Count	8
File Format	PDF
e-ISBN	9781479920983
DOI	10.1109/ESW.2014.6766895
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-02-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	situational awareness arc-flash Switches Hazards enhanced safety design techniques Batteries Personnel battery phase rotation underrated Relays flood saturation explosion CT differential protection transfer-trip Short-circuit currents 2 second arcing time switchgear VRLA synchrophasor Monitoring current transformer
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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