Page 53 - Pipeline Pigging Technology

Pipeline Pigging Technology

mission lines in rural areas. Action is significant because the definition is the
subject of litigation.
STATUS: NPRM to be issued early 1991.

3. Gas pipelines operating above 72% of specified minimum yield
strength (49 CFR 192)

SUMMARY: This proposal would eliminate or qualify the "grandfather
clause" if the natural gas pipeline safety regulations that permit operation of
an existing rural or offshore gas pipeline found to be in satisfactory condition
at the highest actual operating pressure to which the segment was subjected
during the five years preceding 1st July, 1970, or, in the case of an offshore
gathering line, 1st July, 1976.
STATUS: ANPRM issued 3/12/90
NPRM to be issued early 1991

4. Transportation of hydrogen sulphide by pipeline (49 CFR 192)

SUMMARY: This action examines the need to establish a maximum
allowable concentration of hydrogen sulphide that can be introduced into
natural gas pipelines and how to control it.
STATUS: ANPRM issued 9/05/90
NPRM to be issued early 1991

5. Passage of internal inspection devices (49 CFR 192; 49 CFR
195)

SUMMARY: This rulemaking would establish minimum Federal safety
standards requiring that new and replacement gas transmission and hazard-
ous liquid pipelines be designed and constructed to accommodate the
passage of internal inspection devices. This rulemaking was mandated by P.L.
100-561.
STATUS: NPRM to be issued by early 1991

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