PHMSA Gas Transmission (GT) Integrity Management
Time: 10/25/2014 11:32 PM

Rule Section: §192.937(c)

Assessment methods.

Rule Hierarchy:

Rule Language:

In conducting the integrity reassessment, an operator must assess the integrity of the line pipe in the covered segment by any of the following methods as appropriate for the threats to which the covered segment is susceptible (see 192.917), or by confirmatory direct assessment under the conditions specified in 192.931.

(1) Internal inspection tools.

Internal inspection tool or tools capable of detecting corrosion, and any other threats to which the covered segment is susceptible. An operator must follow ASME/ANSI B31.8S, Section 6.2 in selecting the appropriate internal inspection tools for the covered segment.

(2) Pressure test.

Pressure test conducted in accordance with Subpart J of this Part. An operator must use the test pressures specified in Table 3 of section 5 of ASME/ANSI B31.8S, to justify an extended reassessment interval in accordance with 192.939;

(3) Direct assessment.

Direct assessment to address threats of external corrosion, internal corrosion, or stress corrosion cracking. An operator must conduct the direct assessment in accordance with the requirements listed in 192.923 and with as applicable, the requirements specified in 192.925, 192.927 or 192.929;

(4) Other technology.

Other technology that an operator demonstrates can provide an equivalent understanding of the condition of the line pipe. An operator choosing this option must notify the Office of Pipeline Safety (OPS) 180 days before conducting the assessment, in accordance with 192.949. An operator must also notify a State or local pipeline safety authority when either a covered segment is located in a State where OPS has an interstate agent agreement, or an intrastate covered segment is regulated by that State.

(5) Confirmatory direct assessment.

Confirmatory direct assessment when used on a covered segment that is scheduled for reassessment at a period longer than seven years. An operator using this reassessment method must comply with 192.931.

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