Sec. 35432. Thermal blankets
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Not later than 180 days after the date of enactment of this Act, the Secretary shall promulgate such regulations as are necessary to require each tank car built to meet the DOT–117 specification and each non-jacketed tank car modified to meet the DOT–117R specification— to be equipped with a thermal blanket; or to have sufficient thermal resistance so that there will be no release of any lading within the tank car, except release through the pressure relief device, when subjected to a pool fire for 200 minutes and a torch fire for 30 minutes.
In this section, the term thermal blanket means an insulating blanket that is applied between the outer surface of a tank car tank and the inner surface of a tank car jacket and that has thermal conductivity no greater than 2.65 Btu per inch, per hour, per square foot, and per degree Fahrenheit at a temperature of 2000 degrees Fahrenheit, plus or minus 100 degrees Fahrenheit. Nothing in this section may be construed to affect or prohibit any requirement to equip with appropriately sized pressure relief devices a tank car built to meet the DOT–117 specification or a non-jacketed tank car modified to meet the DOT–117R specification.
Nothing in this section may be construed to require or allow the Secretary to prescribe an implementation deadline or authorization end date for the requirement under subsection
(a)that is earlier than the applicable implementation deadline or authorization end date for other tank car modifications necessary to meet the DOT–117R specification.