25.10.2014 Views

Bid Package 08 North Well Field - Garney Construction

Bid Package 08 North Well Field - Garney Construction

Bid Package 08 North Well Field - Garney Construction

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Colorado River Municipal Water District<br />

Raw Water Supply <strong>Well</strong> Sites<br />

Ward County <strong>North</strong> <strong>Well</strong> <strong>Field</strong><br />

SECTION 26 05 73.01<br />

ELECTRICAL POWER SYSTEM STUDIES<br />

PART 1 GENERAL<br />

1.1 DESCRIPTION<br />

General: This section specifies that the CONTRACTOR prepare a short circuit and protective<br />

device coordination study, load flow and motor starting study, and an arc flash hazard analysis for<br />

the electrical power system as shown on the plans for each <strong>Well</strong> Site.<br />

NO EQUIPMENT IS TO BE ENERGIZED UNTIL THE POWER SYSTEM STUDIES<br />

HAVE BEEN APPROVED BY THE ENGINEER, THE PROTECTIVE RELAYS AND<br />

BREAKERS HAVE BEEN SET PER THE SHORT CIRCUIT AND RELAY<br />

COORDINATION STUDY AND THE ARC FLASH LABELS HAVE BEEN INSTALLED<br />

ON THE EQUIPMENT. NO EXCEPTIONS.<br />

Short Circuit and Protective Device Coordination Study, Arc Flash Analysis, Load Flow<br />

Study, and Motor Starting Study<br />

The studies shall provide an evaluation of the electrical power system and the model numbers and<br />

settings of the protective relays or devices and metering or motor monitoring devices for setting<br />

by the CONTRACTOR. The Studies shall include settings for all protective relays and electric<br />

system monitoring. The Contractor shall obtain any needed data or information for the electrical<br />

equipment from Contract Documents, various suppliers, and from conducting his own field<br />

investigations.<br />

A. Scope:<br />

1. The CONTRACTOR is responsible for providing all pertinent information<br />

necessary for the successful completion of the Short Circuit and Relay<br />

Coordination Study, Load Flow and Motor Starting Study, and Arc Flash<br />

Analysis. All cable and raceway data, data from all new Switchgear, motor<br />

control centers, transformers, panelboards, and separately mounted fuses, starters<br />

or circuit breakers shall be obtained by the CONTRACTOR. Obtain all existing<br />

or new protective device information to include all present settings. The<br />

CONTRACTOR shall obtain any needed data or information from Contract<br />

Documents, various suppliers, the Electric Utility and from conducting his own<br />

field investigations. The data obtained shall be organized and submitted to the<br />

ENGINEER to show that all the necessary data gathering work has been done.<br />

2. Calculations shall utilize actual X/R and three phase short circuit values obtained<br />

by the CONTRACTOR from the Electric Utility. The use of infinite bus fault<br />

current calculation is not acceptable.<br />

May 18, 2012<br />

Electrical Power System Studies<br />

Revision 0 26 05 73.01-1

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!