MIL-HDBK-1004/10
APPENDIX E (continued)
protected. This paragraph does not apply to
breakout tank
areas and buried
pumping station piping. For the purposes of
this subpart,
a pipeline does not
have an effective external coating and shall
be considered
bare, if the
cathodic protection current requirements are
substantially
the same as if it
were bare.
(b) Each operator shall electrically inspect each bare interstate pipe-
line before April 1, 1975, and each bare intrastate pipeline before October
20, 1990 to determine any areas in which active corrosion is taking place.
The operator may not increase its established operating pressure on a section
of bare pipeline until the section has been so electrically inspected. In any
areas where active corrosion is found, the operator shall provide cathodic
protection. Section 195.416 (f) and (g) apply to all apply to all corroded
pipe that is found.
(c) Each operator shall electrically inspect all breakout tank areas and
buried pumping station piping on interstate pipelines before April 1, 1973,
and on intrastate pipelines before October 20, 1988 as to the need for
cathodic protection, and cathodic protection shall be provided where
necessary.
[Amdt. 195-33, 50 FR 15899, Apr. 23, 1985; 50 FR 38660, Sept. 24, 1985]
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N 195.416
External corrosion control.
(a) Each operator shall, at intervals not exceeding 15 months, but at
least once each calendar year, conduct tests on each underground facility in
its pipeline systems that is under cathodic protection to determine whether
the protection is adequate.
(b) Each operator shall maintain the test leads required for cathodic
protection in such a condition that electrical measurements can be obtained to
ensure adequate protection.
(c) Each operator shall, at intervals not exceeding 2-1/2 months, but at
least six times each calendar year, inspect each of its cathodic protection
rectifiers.
(d) Each operator shall, at intervals not exceeding 5 years,
electrically inspect the bare pipe in its pipeline system that is not
cathodically protected and must study leak records for that pipe to determine
if additional protection is needed.
(e) Whenever any buried pipe is exposed for any reason, the operator
shall examine the pipe for evidence of external corrosion. If the operator
finds that there is active corrosion, that the surface of the pipe is
generally pitted, or that corrosion has caused a leak, it shall investigate
further to determine the extent of the corrosion.
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