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NID tests new way to replace pipeline

The replacement of old pipelines and siphons in the Nevada Irrigation District canal system could become less expensive and easier on surrounding properties if a current pilot project proves successful, according to a news release.

The NID board of directors on Wednesday approved a $127,450 project to upgrade the aging Godwin Siphon near Alta Sierra with a jointless pipe-in-pipe system that NID has not used before.

The pipe-in-pipe system is manufactured and installed by Insituform Technologies, Inc., a St. Louis-based firm that specializes in trenchless pipeline rehabilitation.



“It’s a proven technology,” said NID Maintenance Manager Brian Powell, who noted that NID has hundreds of aging and sometimes leaking steel culverts and siphons in its extensive raw water distribution system.

Powell said the technology has great promise in reducing costs and duration of water outages during pipe replacement work, as well as reducing the impacts of excavation and other construction on private and public property.




The pipeline lining is installed and expanded within existing lines from a central location, up to about 1,000 feet in each direction, requiring only a single excavation, Powell explained.

Located on NID’s Rattlesnake Canal, the 1,400-foot long, 18-inch diameter Godwin Siphon is nearly 50 years old and in need of repair. Powell said he expects the pilot project to be successful and to lead to other similar improvements.

In other business, directors:

• approved a new Adopt-A-Trail Program for the Scotts Flat Trail, which runs from Highway 20 near the Old 5 Mile House to Scotts Flat Reservoir. Under the program, the trail will be maintained by the Forest Trails Alliance, the local trails advocacy group that constructed the trail earlier this year.

• approved staffing changes in the NID Engineering Department, as recommended by Engineering Manager Gary King, who cited increased efficiency and a $44,500 reduction in payroll costs.

The next regular meeting of the NID board of directors will be held at 9 a.m. on Wednesday, Oct. 9, at the NID Business Center in Grass Valley. NID board meetings are open to the public.


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