# Change in Class Location: Required Study [49 CFR 192.609]

- **operation:** document
- **citation:** LAC 43:XIII §2709
- **title:** Change in Class Location: Required Study [49 CFR 192.609]
- **source type:** regulation
- **agency:** Louisiana Office of Conservation
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** Not available
- **summary:** A. Whenever an increase in population density indicates a change in class location for a segment of an existing steel pipeline operating at a hoop stress that is more than 40 percent of SMYS, or indicates that the hoop stress corresponding to the established maximum allowable operating pressure for 
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- **source url:** https://www.doa.la.gov/doa/osr/louisiana-administrative-code/
**body:**

A. Whenever an increase in population density indicates a change in class location for a segment of an existing steel pipeline operating at a hoop stress that is more than 40 percent of SMYS, or indicates that the hoop stress corresponding to the established maximum allowable operating pressure for a segment of existing pipeline is not commensurate with the present class location, the operator shall immediately make a study to determine: [49 CFR 192.609]

1. the present class location for the segment involved; [49 CFR 192.609(a)]

2. the design, construction, and testing procedures followed in the original construction, and a comparison of these procedures with those required for the present class location by the applicable provisions of this Subpart; [49 CFR 192.609(b)]

3. the physical condition of the segment to the extent it can be ascertained from available records; [49 CFR 192.609(c)]

4. the operating and maintenance history of the segment; [49 CFR 192.609(d)]

5. the maximum actual operating pressure and the corresponding operating hoop stress, taking pressure gradient into account, for the segment of pipeline involved; and [49 CFR 192.609(e)]

6. the actual area affected by the population density increase, and physical barriers or other factors which may limit further expansion of the more densely populated area. [49 CFR 192.609(f)]

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:240 (April 1983), amended LR 10:532 (July 1984), LR 30:1261 (June 2004).
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