APPENDIX E (continued)
Is sufficiently ductile to resist cracking;
Has enough strength to resist damage due to handling and soil
Supports any supplemental cathodic protection.
In addition, if an insulating-type coating is used it must have low moisture
absorption and provide high electrical resistance.
(b) All pipe coating must be inspected just prior to lowering the pipe
into the ditch or submerging the pipe, and any damage discovered must be re-
Cathodic protection system.
(a) A cathodic protection system must be installed for all buried or
submerged facilities to mitigate corrosion that might result in structural
failure. A test procedure must be developed to determine whether adequate
cathodic protection has been achieved.
(b) A cathodic protection system must be installed not later than 1 year
after completing the construction.
(a) Except for offshore pipelines, electrical test leads used for
corrosion control or electrolysis testing must be installed at intervals
frequent enough to obtain electrical measurements indicating the adequacy of
the cathodic protection.
Test leads must be installed as follows:
(1) Enough looping or slack must be provided to prevent test leads
from being unduly stressed or broken during backfilling.
(2) Each lead must be attached to the pipe so as to prevent stress
concentration on the pipe.
(3) Each lead installed in a conduit must be suitably insulated
from the conduit.
(a) No operator may operate an interstate pipeline after March 31, 1973,
or an intrastate pipeline after October 19, 1988, that has an effective
external surface coating material, unless that pipeline is cathodically