If during the television inspection the Contractor encounters a condition where public safety is
threatened (such as, but not limited to, a pipe hole, pipe collapse, stoppage, blockage and/or eminent
sewer spill) the City shail be notified immediately. Furthermore, the Contractor shall provide the City
with a CD or DVD copy of the section of line containing the condition within 24 hours.
Accuracy of the measurements shall be checked daily by use of a walking meter roll-a-tape or other
suitable device. Footage measurements shall begin at the centerline of the upstream manhole, unless
specific permission is given to do otherwise.
Continuously displayed on the monitors shall be date of the inspection, GIS node numbers of the
upstream and downstream manholes corresponding to the line section being inspected and a
continuous forward and reverse footage readout of the camera distance from the manhole of reference.
The-camera shall be operative in one hundred percent humidity and specifically designed for in sewer
inspection of sewer lines ranging from 6 inch to 120 inch in diameter and inspection of various sized box
conduits. The camera shall produce a continuously monitored picture with the resolution capability to
discern smalt hairline cracks and other minor/major defects in the sewer line. it should be equipped with
a ring of low intensity lights around the camera to obtain maximum peripheral vision and prevent
fogging within the line being inspected. The camera shall be with a panning and rotational camera head
with remote adjustable optical focus and automatic light compensating iris. Focal distance shall be
adjustable through a range from 6 inches to infinity. Continuously displayed on the monitor shall be the
date of the inspection, GIS node number of the upstream and downstream manholes corresponding to
the line reach being inspected and a continuous forward and reverse readout of the camera distance
from the manhole of reference. The camera, television monitor and other components of the video
system shall be capable of producing a minimum 600-line resolution. The TV transmission and tow cable
assembly must have the capability to CCTV lengths up to 1,000 feet. The remote footage counter shall
be accurate to one percent over the length of the particular section being inspected.
A Nationally Recognized Testing Laboratory must approve all electrical equipment, including CCTV
cameras, for use in a Hazardous location and wet environments. Specifically, this equipment must be
approved for use in Class |, Division |, Group D Hazardous Locations as defined by the National Fire
Protection Association (NFPA) Code 820-1999.
The Contractor shall have the ability to communicate with its vehicle at all times.
This item will be paid for by the feet (FT) of pipe videoed.
CCTV Inspection for Catch Basin Laterals (Item 28)
See “CCTV Inspection for Sewer and Drain Main Lines (Item 15-27)”
|FBO844-060916 Sewer and Orain Pipe Inspection for Paving Program Page € of 17
229 Main Street Nashua New Hampshire O3061 + Phone (603) 589-3330 + Fax (608) 569-3344
