Cured-in-place piping for structural and pressure boundary integrity

Technical Report · Fri Dec 01 04:00:00 EST 1995

OSTI ID:197817

Adams, G ^[1]; Charest, J A; Julius, E P; McKinney, J ^[2]

---

1. ed.; Energy International, Inc., Bellevue, WA (United States)
2. Proto-Power Corp., Groton, CT (United States)

Cured in place pipe (CIPP) as a form of underground pipe repair has been successfully demonstrated in many cases to be economically superior over complete pipe replacement. As a non-pressure boundary pipe liner, CIPP will check corrosion/erosion of a structurally sound host pipe as well as mitigate significant amounts of leakage. For structurally degraded pipe, however, the owner will be faced with other more expensive corrective actions including full pipe replacement. An approved standard for structural use of CIPP by a recognized body such as ASME will yield further benefits to the user by extending service water (SW) system rehabilitation to more extensively degraded systems. In order to provide this standard, EPRI initiated the necessary research to develop and support an ASME B&PV Section )G Code Case for Nonmetallic Cured in Place Piping. The technical basis of the code case was developed by researching similar code cases, ASTM specifications, trenchless technology literature and test data, case histories, and conducting the appropriate analysis and testing to support the application in underground pipe as a pressure boundary. Under the review of the Section XI Subgroup -- Repairs, Replacement and Modifications -- this code case includes the necessary design, installation and acceptance rules to allow for the structural use of CIPP in either partially or completely degraded safety class 3 SW piping. In order to provide potential users of CIPP with the practical information gained as a result of this effort, the technical basis of the code case along with helpful guidelines for its implementation are presented in this document.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Proto-Power Corp., Groton, CT (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 197817
• Report Number(s): EPRI-TR--106013
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
42 ENGINEERING
AUXILIARY WATER SYSTEMS
CURING
LINERS
MAINTENANCE
NUCLEAR POWER PLANTS
PIPES
REPAIR
UNDERGROUND