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Complicated Siphon Rehab Challenges Pre-Job Planning Process

Complicated Siphon Rehab Challenges Pre-Job Planning Process
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The Jim Creek siphon is located in the Arapahoe National Forest in Winter Park, Colorado, elevation 9,000 feet. The siphon was constructed as part of the original Moffat Collection System in approximately 1935/1936, commencing operation in 1937. It is a 54-inch diameter steel pipeline that conveys Fraser River water from the Fraser Canal on the south side of the Jim Creek valley to the Jim Creek-Fraser Creek Canal on the north side of Jim Creek valley. The Jim Creek valley floor includes a significant wetlands complex with sensitive terraced beaver ponds, which require protection during any rehabilitation work. 

Product Number: 51220-288-SG
Author: Greg Smith
Publication Date: 2020
Industry: Coatings
$0.00
$20.00
$20.00

The Jim Creek siphon is located in the Arapahoe National Forest in Winter Park, Colorado, elevation 9,000 feet. The siphon was constructed as part of the original Moffat Collection System in approximately 1935/1936, commencing operation in 1937. It is a 54-inch diameter steel pipeline that conveys Fraser River water from the Fraser Canal on the south side of the Jim Creek valley to the Jim Creek-Fraser Creek Canal on the north side of Jim Creek valley. The Jim Creek valley floor includes a significant wetlands complex with sensitive terraced beaver ponds, which require protection during any rehabilitation work. The contractor was awarded part of the project scope which consisted of; cleaning and re-lining the interior of the steel pipe, completing spot repairs, making linear tape repairs on exterior coating of steel pipe, repairs to concrete supports, and external coating of pipe at different locations. Completing this project required the navigation through 1,800’ of pipeline that sloped steeply in some areas, protecting sensitive wetlands, staging and moving equipment along mountain terrain, and applying a 100% volume solids interior coating while dealing with the restrictions of pipe diameter and working with potentially hazardous materials. This paper will outline the challenges and unique requirements of the project and their outcomes.

The Jim Creek siphon is located in the Arapahoe National Forest in Winter Park, Colorado, elevation 9,000 feet. The siphon was constructed as part of the original Moffat Collection System in approximately 1935/1936, commencing operation in 1937. It is a 54-inch diameter steel pipeline that conveys Fraser River water from the Fraser Canal on the south side of the Jim Creek valley to the Jim Creek-Fraser Creek Canal on the north side of Jim Creek valley. The Jim Creek valley floor includes a significant wetlands complex with sensitive terraced beaver ponds, which require protection during any rehabilitation work. The contractor was awarded part of the project scope which consisted of; cleaning and re-lining the interior of the steel pipe, completing spot repairs, making linear tape repairs on exterior coating of steel pipe, repairs to concrete supports, and external coating of pipe at different locations. Completing this project required the navigation through 1,800’ of pipeline that sloped steeply in some areas, protecting sensitive wetlands, staging and moving equipment along mountain terrain, and applying a 100% volume solids interior coating while dealing with the restrictions of pipe diameter and working with potentially hazardous materials. This paper will outline the challenges and unique requirements of the project and their outcomes.

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