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30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.
35 FR 13257, Aug. 19, 1970, unless otherwise noted.
Amdt. 192-4, 36 FR 12302, June 30, 1971, unless otherwise noted.
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Subscribe to: 49 CFR 192.477
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Nomenclature changes to part 192 appear at 71 FR 33406, June 9, 2006.
If corrosive gas is being transported, coupons or other suitable means must be used to determine the effectiveness of the steps taken to minimize internal corrosion. Each coupon or other means of monitoring internal corrosion must be checked two times each calendar year, but with intervals not exceeding 71⁄2 months.
[Amdt. 192-33, 43 FR 39390, Sept. 5, 1978]