Streamline - Summer 2017 - 23

4)

5)

6)

7)

this reason, most specifications rule
out using wire with a jacket insulation of THHN. Also, most utilities
are starting to specify blue insulation
for water pipes, and green insulation
for wastewater pipes.
method of attaching tracer wire
to pipe, example: distance and use
of PVC tape or straps, most specifications recommend attaching wire
every 8-10 feet at a three o'clock position on the pipe, and at all fittings
and elbows.
number and location of access
points, example: valve, meter or
other boxes for access and how
the wire will be protected from
future damage.
location of splice connections and
how the splicing will be done,
example: making sure all splice
joints are made with connectors that
protect from moisture and corrosion.
Twisting wires and using electrical
tape will not always prevent corrosion, leading to loss of electrical
signal for locating purposes.
testing for electrical conductivity
and/or continuity, example: testing
is very important prior to signing
off on the completion of the water
or wastewater project. The tracer wire
and connections should be tested for

conductivity and/or continuity. If testing shows problems they can be corrected now, opposed to causing future
problems for utility staff in locating
the pipes.
As you can see, these are just some
of the areas to consider when preparing
your specifications for locating plastic
pipe with tracer wire. For anyone who
has had the opportunity and responsibility for pipe location, they understand the
difficulty and frustration involved while
locating plastic pipe when these types of
specifications have not been thought out
and implemented in advance.
Over the last few years, new technology has also been developed and
used by water and wastewater utilities
to locate pipe when tracer wire wasn't
installed. One of these new technologies is Ground-Penetrating Radar (GPR).
GPR uses radar pulses to image underground assets. It does have the possibility of limits due to poor soil conditions
such as clay materials. This technology
has come down in price over the last few
years, and is fairly simple to use with
proper training.
Other new technology involves the
use of placing color coded utility markers in the ditch as the pipe is laid that
can be pinpointed by special location
equipment. Some utilities are using

sonde locators that can be inserted into
a water or wastewater pipe and traced
with electromagnetic locators. Another
technology is radio-frequency identification (RFID), which involves programming tracking tags with identifying
information, by computer programming,
which are attached to objects that can be
located with magnetic locators. These
metal objects with tracking tags are
then buried with the piping material.
When future pipe location is needed,
the field staff can get in the area with
GIS or mapping information, then walk
along the area of possible pipe location
with a magnetic locator and locate the
metal object. Staff can then use a mobile
(RFID) reader to identify the object
and verify it is one of their assets, and
retrieve all pre-programmed information about the asset.
The goal of this article is to give you
a basic understanding of the methods
and importance of making sure adequate thought is given when designing
specifications for locating plastic pipe
materials. Make sure your water and
wastewater utility staff is involved with
your engineering firm in the specification and design process. Over the years
this pipe will be in the ground, locating
materials will save your staff time and
your utility money.

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Table of Contents for the Digital Edition of Streamline - Summer 2017

From the President: 2017 Legislative Efforts
From the Executive Director: Give Us Another Drum Roll Please…
2017 VRWA Conference Highlights
Locating Plastic Pipe
The Value of VRWA
Portable Ladder Safety
The Chesapeake Bay
These Boots Are Made For...What?
RUS-Funded Projects: New Requirements
SOPs: The First Step to Sustainable Utilities
Throwing My Loop: The Horse Trailer with the Broken Heart (Part Two)
VRWA Member Corner
eLearning Benefits
Membership Application
Benefits for VRWA Members
Board of Directors
VRWA Committees
Index to Advertisers/Ad.com
Streamline - Summer 2017 - Intro
Streamline - Summer 2017 - cover1
Streamline - Summer 2017 - cover2
Streamline - Summer 2017 - 3
Streamline - Summer 2017 - 4
Streamline - Summer 2017 - 5
Streamline - Summer 2017 - 6
Streamline - Summer 2017 - 7
Streamline - Summer 2017 - 8
Streamline - Summer 2017 - From the President: 2017 Legislative Efforts
Streamline - Summer 2017 - 10
Streamline - Summer 2017 - From the Executive Director: Give Us Another Drum Roll Please…
Streamline - Summer 2017 - 2017 VRWA Conference Highlights
Streamline - Summer 2017 - 13
Streamline - Summer 2017 - 14
Streamline - Summer 2017 - 15
Streamline - Summer 2017 - 16
Streamline - Summer 2017 - 17
Streamline - Summer 2017 - 18
Streamline - Summer 2017 - 19
Streamline - Summer 2017 - 20
Streamline - Summer 2017 - 21
Streamline - Summer 2017 - Locating Plastic Pipe
Streamline - Summer 2017 - 23
Streamline - Summer 2017 - 24
Streamline - Summer 2017 - The Value of VRWA
Streamline - Summer 2017 - Portable Ladder Safety
Streamline - Summer 2017 - The Chesapeake Bay
Streamline - Summer 2017 - These Boots Are Made For...What?
Streamline - Summer 2017 - 29
Streamline - Summer 2017 - RUS-Funded Projects: New Requirements
Streamline - Summer 2017 - 31
Streamline - Summer 2017 - SOPs: The First Step to Sustainable Utilities
Streamline - Summer 2017 - 33
Streamline - Summer 2017 - 34
Streamline - Summer 2017 - Throwing My Loop: The Horse Trailer with the Broken Heart (Part Two)
Streamline - Summer 2017 - 36
Streamline - Summer 2017 - VRWA Member Corner
Streamline - Summer 2017 - 38
Streamline - Summer 2017 - eLearning Benefits
Streamline - Summer 2017 - Membership Application
Streamline - Summer 2017 - Benefits for VRWA Members
Streamline - Summer 2017 - 42
Streamline - Summer 2017 - VRWA Committees
Streamline - Summer 2017 - 44
Streamline - Summer 2017 - Index to Advertisers/Ad.com
Streamline - Summer 2017 - 46
Streamline - Summer 2017 - cover3
Streamline - Summer 2017 - cover4
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