Elcometer 266 - Page 38

Standard or
Method
Number
Date
Title
Notes
Voltage
†
Setting
JIS G-3492
1993
Coal-tar enamel coatings
on water line pipes
Inside walls: 8-10 kV
Dipped coatings: 6-7 kV
Outside walls: 10-12 kV
Welded areas as inside
walls
M
NACE SP0188
2006
Discontinuity (Holiday)
Testing of new Protective
Coatings on Conductive
Substrates
Low and high voltage
equipment and tests.
VC, M
NACE RP0274
1974
High Voltage Electrical
Inspection of Pipeline
Coatings prior to
installation
DC or Pulsed test voltage
.
V = 1250 Thickness (mil)
VC, M
NACE SP0490
2007
Holiday Detection of
Fusion-Bonded Epoxy
External Pipeline Coatings
of 10-30mils
(0.25 - 0.76mm)
DC in dry conditions
.
V = 525 Thickness (mil)
Trailing ground lead of 9m
allowed if pipe is connected
to 2-3ft earth spike and soil
is not dry
VC, M
Note: The above list and comments have been extracted from the documents identied and
every effort has been made to ensure that the content is correct. No responsibility
can be accepted, however, for the accuracy of the information as these documents
are updated, corrected and amended regularly. A copy of the relevant standard or
method must be obtained from the source to ensure that it is the current document.
APPENDIX A: STANDARDS (continued)
www.elcometer.com
en-37
R
†
Elcometer 266 Voltage Setting: VC = Voltage Calculator; M = Manual