B.
by solids, grit, and/or sand. The cured tube shall also be resistant to
corrosion due to acids and gases such as sulfuric acid, carbonic acid,
hydrogen sulfide, methane, and carbon monoxide. The Cure-In-Place-
Pipe system shall utilize thermosetting resins which will withstand the
corrosive effect of the existing residential commercial, and industrial
sewage effluents, liquids and/or gases.
The resin system to be used shall be manufactured by an approved
company selected by the Cured-In-Place process manufacturer.
Documentation of approved status is a pre-lining requirement.
LINER TUBE
1.
ACCEPTABLE MATERIALS
Fiberglass (cured with ultra-violet light).
TUBE CHARACTERISTICS AND STANDARDS
At the time of manufacture, each lot of glass fiber liner shall be inspected
for defects and tested in accordance with applicable ASTM standards. At
the time of delivery, the liner shall be homogeneous throughout, uniform
in color, free of cracks, holes, foreign materials, blisters, and deleterious
faults.
For testing purposes, a production lot shall consist of all liner having the
same marking number. It shall include any and all items produced during
any given work shift and must be so identified as opposed to previous or
ensuing production.
The ENGINEER may at any time direct the manufacturer to obtain
compound samples and prepare test specimens in accordance with
applicable ASTM standards.
An “inner liner” and “outer liner” film must be used for resin control (to
prevent resin migration and contamination). The “inner film” and “outer
film” must both be certified styrene gas barriers. The “inner liner” film
must be removed during the installation process unless it is a permanent
part of the system and is made an integral part of the carrier tube by
bonding or fusing to the carrier tube.
The material shall be manufactured in such a manner as to result in a tight-
fitting, continuous liner after installation. There shall be no measureable
annular space. The liner shall have a snug fit at manhole terminations as
shall be evidenced by flares.
2019 CIPP Lining Project CIPP Lining of Existing Sewers (Ultraviolet)
Nashua, NH
02651-7
