3.2.1
Testing
3.2.1.1
Non-Destructive Testing of Anodes
Contractor shall perform the tests in the presence of the Contracting
Officer. One anode of each type shall be chosen at random for
non-destructive testing and shall be submerged in a container of fresh
water for about 30 minutes. Contractor shall then measure the
anode-to-water potential difference between a calibrated copper-copper
sulfate reference electrode. Potential differences should generally be
within the following ranges:
High potential Magnesium
-1.65 to -1.75 Volts
Standard Magnesium
-1.4 to -1.5 Volts
Zinc
-1.0 to -1.15 Volts
[Failure of the test anode to conform to this specification can be cause
for rejecting all anodes from the same lot as the test anode. The
contractor shall mark all rejected anodes on the ends with a 6" high "X"
using yellow spray paint. Failed anodes shall be removed from the job site
by the end of the day. The contractor shall replace any rejected anodes at
his expense. The destructive testing provision shall also apply to
replacement anodes as well.]
3.2.1.2
Destructive Testing of Anodes
Contractor shall perform the tests in the presence of the Contracting
Officer. Contractor shall include the cost of an additional anode [of each
different type] with the longest lead wire for the destructive test in his
bid. One completed [prepackaged] anode of each type with lead wires shall
be chosen at random for destructive testing and shall be submitted to a
static pull test. Anode wire connections shall have sufficient strength to
withstand a minimum tensile load of [136] [_____] kg [300] [_____] pounds.
[The anode shall also be cut into sections and/or broken with a sledge
hammer to verify conformance with this specification. Such items as
anode-to-wire connection, complete encapsulation of the wire connector, and
wire to anode electrical resistance shall be checked.] [Failure of the
test anode to conform to this specification can be cause for rejecting all
anodes from the same lot as the test anode. The contractor shall mark all
rejected anodes on the ends with a 6" high "X" using yellow spray paint.
Failed anodes shall be removed from the job site by the end of the day.
The contractor shall replace any rejected anodes at his expense. The
destructive testing provision shall also apply to replacement anodes as
well.]
3.2.1.3
Initial Cathodic Protection System Field Testing
Systems shall be tested and inspected by the Contractor's corrosion
engineer in the presence of the Contracting Officer's corrosion protection
engineer or an approved representative. Record test data, including date,
time, and locations of testing and submit report to the Contracting
Officer. Contractor shall correct and retest, at his expense, deficiencies
in the materials and installation observed by these tests and inspections.
Testing shall include the following measurements.
a.
Base potential tests: At least [one week] [24 hours] [_____]
after [backfilling of the pipe] [installation of structure to be
protected] [initial operation of structures containing fluids] and
installation of the anodes, but before connection of anodes to the
SECTION 13110N
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