PR O JECT
PR O FILE
Elsinore Valley
Municipal Water District,
Arc Flash Study
Elsinore Valley Municipal Water District regenerated the completely
dry Lake Elsinore, and created an oasis in an arid, desert-like region
of western Riverside County when it was created in 1950. To assist
its mission of providing customers with safe, affordable water, P2S
provided an Arc Flash Risk Assessment of electrical distribution
equipment at over district 158 sites. Our team created a Short Circuit
Contribution Report, an Overcurrent Protective Device Coordination
Study, an Arc Flash Risk Mitigation Report and a final Arc Flash
Risk Assessment Report for the district. We also held a 3-hour Arc
Flash and Shock Hazard Electrical Safety training session for district
electrical and maintenance personnel.
Background & Solutions
Our team collected data, verified equipment in the field, created
one-line diagrams for all 158 sites and safely obtained equipment
information for: distribution equipment types and ratings, conductor
sizes, conductor lengths, overcurrent protection, and transformer
ratings and impedances. We created power system study models in
ETAP, based on the field surveys and verified as-builts. We modeled
and analyzed switching configurations for the most conservative
results for Short Circuit, Coordination, and Arc Flash. We also
created and applied Arc Flash labels to distribution equipment at
all 158 district sites. Our team began the project on January 31,
2017 and spent an estimated 1,300 personnel-hours. We deployed
two teams of engineers and electricians into the field to complete
the site assessment and data collection portions in seven weeks. We
then prepared the Arc Flash Risk Assessment report in the following
six weeks. We worked aggressively to meet the district’s 4-month
completion timeline.
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