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Testing and Maintenance of Fuji Tecom Pipe Locators
This document details the recommended testing procedures for preventative maintenance and troubleshooting opera-
tions of Fuji Tecom Pipe Locators.
We recommend performing this procedure on a weekly basis, or prior to use if the tool has not been checked within the
recommended weekly basis.
Test Procedures
*Test results should be retained in a log book.
1. Set up a test location, with a known underground facility
2. Ensure you put fresh batteries in transmitter and receiver before conducting tests.
3. Examine all old batteries when replacing with new batteries for evidence of leakage
4. Put a permanent mark for transmitter location for initial test and all subsequent tests
5. Turn transmitter on and place over underground facility with correct orientation
6. Precise placement and orientation of the transmitter is necessary to repeat test results
7. Permanently mark 2-3 set distances from the transmitter (approx.. 20 feet apart) where readings will be taken
with the receiver, for initial test and all subsequent tests
8. Using the receiver go to first marked receiver location on underground facility, place the footplate of the re-
ceiver on the ground over centerline of underground facility
9. Take a depth reading by pressing depth button, wait for prompt to pull up. With on foot on footplate, pull re-
ceiver upwards extending the slide pipe fully.
10. Allow receiver to compute the values
11. With the depth displayed, record all required information including, Depth, sensitivity and Current Measure-
ment
12. Repeat at other pre-marked locations
13. Repeat steps 5-10 using locate tools additional frequencies by first changing the frequency on transmitter and
then the receiver.
14. The locate tool should be tagged and sent in for service and calibration if a change is identified in the following
readings.
Test Results
•
Any Location change in the (X?Y orientation, or left or right over the test line) the Receiver should consistently
read a maximum reading indication when directly above or on the test points
•
Depth reading of +or – 10% ( Z orientation or depth of test line)
•
Sensitivity readings at the receiver are a function of output from the transmitter (it tells you if the transmitter is
working properly). To test and confirm repeatability of sensitivity, the transmitter must be precisely placed in
the exact location and orientation as of where the original test data was documented. Sensitivity reading may
vary depending on the placement of the transmitter. The distance from the receiver to the transmitter will also
vary significantly if the receiver is not precisely at the same location and orientation as the original test data
points. Battery strength may affect sensitivity to some degree.
•
Current Measurement readings at the receiver are a function of reception of the signal from the pipeline.
The current measurement indication changes when moving along the test line away from the transmitter.
Orientation of the transmitter to the receiver will change the current response. Distance from the transmitter
to the receiver will change the current measurement. To replicate original test readings, precise placement of
both transmitter and receiver is required.
Good Practices
•
Remove batteries if the tool will not be used for extended periods of time
•
Keep the tool in clean condition and specifically avoid metallic dust.
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