LONGVIEW FIBRE 115-KV 3-WAY SWITCH

LONGVIEW FIBRE 115-KV 3-WAY SWITCH
Longview, Washington
Owner: Longview Fibre

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LONGVIEW FIBRE 115-KV 3-WAY SWITCH

This project is located at the Longview Fibre paper and packaging facility in Longview, Washington. The project consists of the removal and replacement of a 115-kV concrete termination structure with a new 115-kV, self-supporting steel, 3-way switch structure. The new steel structure also accommodates an existing 13.8-kV distribution circuit. The 115-kV conductors are 795 kcmil "Tern".

TriAxis directed the site survey to assure clearances from all plant activities and to position the structure away from the main road and railroad intersection.

TriAxis directed the geotechnical investigation and designed the steel pole anchor-bolt foundation to support all loads. PLS-CADD was used in the line design, including the development of the structure model and production of plan and profile drawings. TriAxis services included steel pole shop drawings review, foundation design, stringing charts, construction unit assembly drawings, staking sheets, and services during construction.

Completion Date: 2013

Design work for which TriAxis was responsible: 100%

SILVERADO POWER PLAINVIEW SOLARWORKS 66-KV GEN-TIE

SILVERADO POWER PLAINVIEW SOLARWORKS 66-KV GEN-TIE
Lancaster, California
Owner: sPower

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SILVERADO POWER PLAINVIEW SOLARWORKS 66-KV GEN-TIE

This 66-kV generation tie-line segment interconnects Plainview solarworks' 66-kV substation to the Southern California Edison Antelope Substation. TriAxis designed the 0.5-mile-long 66-kV single-circuit overhead transmission line with a 1590 kcmil Falcon ACSR. The line consists of single, tubular-steel poles and conductors are supported from braced-post insulators. The average span length is approximately 450 feet. All structures are direct-embedded and self-supporting structures. PLS-CADD was used in all aspects of line design including the development of structure models, the evaluation of strength and clearance requirements, and production of plan and profile drawings. TriAxis services included all specifications, bid documents preparation, and services during the construction.

Completion Date: 2014 (in progress)

Design work for which TriAxis was responsible: 100%

WALNUT CITY SUBSTATION GET-AWAY 115-KV

WALNUT CITY SUBSTATION GET-AWAY 115-KV STEEL POLE DESIGN
McMinnville, Oregon
Owner: McMinnville Water and Light

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WALNUT CITY SUBSTATION GET-AWAY 115-KV

This project included the design and specifications for replacement of the existing three wood poles shown in this photograph. These wood poles and risers were replaced with one new self-supporting tubular steel pole adjacent to the substation. The new steel pole supports 115-kV transmission and two underbuild 12.47-kV three-phase, 4-wire distribution lines, and a 3/8-inch EHS shield wire. The pole foundation was designed for direct embedment.

The new steel pole was designed to support 556 AAC Dahlia conductors for both transmission and distribution. The pole design also included provisions for underground feeder riser and multiple communication attachments.

PLS-CADD was used in the line design, including the development of structure models and production of plan and profile drawings. TriAxis services included steel pole shop drawings review, stringing charts, construction unit assembly drawings, and staking sheets.

Completion Date: 2014 (in progress)

Design work for which TriAxis was responsible: 100%

SILVERADO POWER PLAINVIEW SOLARWORKS 66-KV GEN-TIE

UMATILLA ELECTRIC PORT OF MORROW SUB. TO RIPPEE ROAD SUB. 115/12.47-KV
Boardman, Oregon
Owner: Umatilla Electric Cooperative

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SILVERADO POWER PLAINVIEW SOLARWORKS 66-KV GEN-TIE

This project was for the design of a new 115-kV transmission line, approximately 1.7 miles long, to connect the UEC Port of Morrow Substation to the UEC Rippee Road Substation. The line was designed as a single-circuit 115-kV (1272 kcmil ACSR 'Pheasant") with double-circuit (556 kcmil AAC "Dahalia") underbuild and a continuous OPGW shield wire. All tangent structures are Douglas Fir Wood structures. Some deadends are tubular steel, monopole with anchor-bolt foundations.

PLS-CADD was used in the line design including the development of structure models and produc-tion of plan and profile drawings. TriAxis services included Plan and Profile, Steel Structure Con-cept Drawings, stringing charts, construction unit assembly drawings, staking sheets, RUS con-tract document assembly, bidders review, on going project inspections and management, including RUS contract close-out document submittals.

Completion Date: 2014