Each operator that uses direct assessment as defined in Sec. 192.903 on an onshore transmission line made primarily of steel or iron to evaluate the effects of a threat in the first column must carry out the direct assessment according to the standard listed in the second column. These standards do not apply to methods associated with direct assessment, such as close interval surveys, voltage gradient surveys, or examination of exposed pipelines, when used separately from the direct assessment process. ------------------------------------------------------------------------
Threat Standard \1\------------------------------------------------------------------------External corrosion....................... Sec. 192.925 \2\Internal corrosion in pipelines that Sec. 192.927
transport dry gas.Stress corrosion cracking................ Sec. 192.929------------------------------------------------------------------------\1\ For lines not subject to subpart O of this part, the terms ``covered
segment'' and ``covered pipeline segment'' in Secs. 192.925, 192.927,
and 192.929 refer to the pipeline segment on which direct assessment
is performed.\2\ In Sec. 192.925(b), the provision regarding detection of coating
damage applies only to pipelines subject to subpart O of this part. [Amdt. 192-101, 70 FR 61575, Oct. 25, 2005]