---
kind: "section"
citation: "49 C.F.R. § 192.553"
title: "49"
number: "192.553"
heading: "General requirements."
url: "https://uscodex.org/cfr/49/192.553"
---

# §192.553. General requirements.

- (a) **Pressure increases.** Whenever the requirements of this subpart require that an increase in operating pressure be made in increments, the pressure must be increased gradually, at a rate that can be controlled, and in accordance with the following:
  - (1) At the end of each incremental increase, the pressure must be held constant while the entire segment of pipeline that is affected is checked for leaks.
  - (2) Each leak detected must be repaired before a further pressure increase is made, except that a leak determined not to be potentially hazardous need not be repaired, if it is monitored during the pressure increase and it does not become potentially hazardous.
- (b) **Records.** Each operator who uprates a segment of pipeline shall retain for the life of the segment a record of each investigation required by this subpart, of all work performed, and of each pressure test conducted, in connection with the uprating.
- (c) **Written plan.** Each operator who uprates a segment of pipeline shall establish a written procedure that will ensure that each applicable requirement of this subpart is complied with.
- (d) **Limitation on increase in maximum allowable operating pressure.** Except as provided in [§ 192.555(c)](/cfr/49/192.555.md?p=c), a new maximum allowable operating pressure established under this subpart may not exceed the maximum that would be allowed under §§ [192.619](/cfr/49/192.619.md) and [192.621](/cfr/49/192.621.md) for a new segment of pipeline constructed of the same materials in the same location. However, when uprating a steel pipeline, if any variable necessary to determine the design pressure under the design formula ([§ 192.105](/cfr/49/192.105.md)) is unknown, the MAOP may be increased as provided in [§ 192.619(a)(1)](/cfr/49/192.619.md?p=a-1).

## Notes

### Amendments

[35 FR 13257, Aug. 10, 1970, as amended by Amdt. 192-78, 61 FR 28785, June 6, 1996; Amdt. 192-93, 68 FR 53901, Sept. 15, 2003]

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.

### Amendments

[35 FR 13257, Aug. 10, 1970, as amended by Amdt. 192-78, 61 FR 28785, June 6, 1996; Amdt. 192-93, 68 FR 53901, Sept. 15, 2003]