It is a very good technology. We used it in NY ( upstate) several years ago. Make sure you have pressure testing built within the specifications to verify the integrity of the piping after lining. In addition severe corrosion may reduce wall thickness of some pipes. At the outset of a job pipe thickness is measured with ultrasonic techniques. Pipe with more than 50 percent of its original wall thickness can be lined, but pipe thinner than this must be replaced before lining begins. Must follow ANSI/NSF 61 for compliance for drinking water applications. The application procedure involves three steps: inspection and necessary repairs before lining; surface preparation by abrasive grit propelled by compressed air; and application of the lining. The technique does not completely eliminate the need to replace deteriorated piping. Pressure in the pipes can reach 60 psi and, although this is not usually considered high pressure, precautions must be taken against rupture of the pipe. Usually only a small amount of pipe is replaced. Here are a couple of companies that could provide specs into the lining. American Pipelining Corporation, 5780 Chesapeake Court, Suite #1, San Diego, CA 92123, POC Mr. Steve Mori, tel 619-278-7991, fax 619-278-7993; and Insitu Pipe Coating Inc., 3205 Production Avenue, Oceanside, CA 92054, POC Mr. Wayne Nishimoto, tel 691-721- 2577, fax 619-721-2578.
Specs are listed below
http://www.nsf.org/CERTIFIED/SELNK/9857.pdf -------------------------------------------
Eugene Ninnie, P.E., AIA, LEED AP
Principal
CTE-VBMIS Group
Carson City, NV
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