Page 123 - Trenchless Technology Piping Installation and Inspection

Existing Pipeline Renewal and Replacement Methods 89

7.4 Inspection of pipelines—Inspection of pipelines shall be
performed by experienced personnel trained in locating
breaks, obstacles, and service connections using close cir-
cuit television (CCTV) inspection techniques. The pipeline
interior shall be carefully inspected to determine the loca-
tion of any conditions that may prevent proper installation
of CIPP. These shall be noted and corrected. A video record
and suitable written log for each line section shall be pro-
duced for later reference by the owner.
7.5 Line obstructions—It shall be the responsibility of the con-
tractor to clear the line of obstructions such as solids and roots
that will prevent the insertion of CIPP. If preinstallation
inspection reveals an obstruction such as a protruding ser-
vice connection, dropped joint, or a collapse that will pre-
vent the installation process, that was not evident on the
pre-bid video and it cannot be removed by conventional
sewer cleaning equipment, then the contractor shall make a
point repair excavation to uncover and remove or repair the
obstruction. Such excavation shall be approved in writing
by the owner’s representative prior to the commencement
of the work and shall be considered as a separate pay item.
7.6 Public notification—The contractor shall make every effort
to maintain sewer service usage throughout the duration of
the project. In the event that a connection will be out of ser-
vice, the longest period of no service shall be 8 hours. A
public notification program shall be implemented, and
shall as a minimum, require the contractor to be responsible
for contacting each home or business connected to the sani-
tary sewer and informing them of the work to be conducted,
and when the sewer will be off-line. The contractor shall
also provide the following:
a. Written notice to be delivered to each home or business
the day prior to the beginning of work being conducted
on the section, and a local telephone number of the con-
tractor they can call to discuss the project or any poten-
tial problems.
b. Personal contact with any home or business, which can-
not be reconnected within the time stated in the written
notice.
7.7 The contractor shall be responsible for confirming the loca-
tions of all branch service connections prior to installing the
CIPP.

8. Installation
8.1 CIPP installation shall be in accordance with ASTM F1216-
09, Sec. 7, or ASTM F1743-08, Sec. 6, with the following
modifications: