13kV Conversion Area Design - Aerial

Tangibl completed a series of design packages for converting distribution facilities from 4kV to 13kV.  The work was required to fulfill the recommendations of a planning study that called for moving load from an older 4kV distribution substation to a newer 13kV distribution substation, for an urban, investor-owned utility in the mid-Atlantic region.

The scope included assessment for rebuilding of approximately six miles of distribution facilities in accordance with the utility’s construction standards.  Many of the 295 poles within the scope of the project were identified for replacement.  The project included re-conductoring of neutral with 4/0 where required, installation of 477-kcmil phase conductor in open wire construction, and removal of idle or duplicate facilities in several locations.  Construction drawings were created in Microstation that included tables of points and spans showing compatible units for install and scrap, and identification of as-built conditions at each pole location.  The work was complicated by its location in an urban redevelopment zone, where prudent work practices dictated two-man teams for field survey work at specific times of day.

As part of the project scope, Tangibl met with the utility’s construction supervisor to identify specific preferences where standards did not address construction requirements, and to point out corrective maintenance situations requiring immediate attention.  When the project received its funding authorization, we supported data entry of point, spans, and compatible units to generate work orders in the utility’s work management system.  Tangibl also supported staking of pole locations for the pole line contractor and provided onsite construction quality assurance.