§ 174.57 49 CFR Ch. I (10–1–99 Edition)
freight, it must be provided by block- aged to an extent that would affect its ing and bracing. For examples of block- integrity under conditions normally in- ing and bracing in freight containers cident to transportation. Each unit and transport vehicles, see Bureau of must be secured on a flatcar so that it Explosives Pamphlet Nos. 6 and 6C. cannot permanently change position (b) Each package containing a haz- during transit. Packages of hazardous ardous material bearing package ori- materials contained therein must be entation markings prescribed in loaded and braced as provided by § 172.312 of this subchapter must be §§ 174.101, 174.112, 174.115 and 174.55. loaded within a transport vehicle or Placards must be applied when pre- freight container to remain in the cor- scribed by part 172 of this subchapter rect position indicated by those mark- and part 174. ings during transportation. (b) Except as specified in § 173.21, a (c) The doors of a freight container or truck body, trailer, or freight con- transport vehicle may not be used to tainer equipped with heating or refrig- secure a load that includes a package erating equipment which has fuel or containing a hazardous material unless any article classed as a hazardous ma- the doors meet the design strength re- terial may be loaded and transported quirements of Specification M–930 (for on a flat car as part of a joint rail high- freight containers) and M–931 (for trail- way movement. The heating or refrig- ers) in the AAR’s Manual of Standards erating equipment is considered to be a and Recommended Practices and the part of the truck body or trailer and is load is also within the limits of the de- not subject to any other requirements sign strength requirements for the of this subchapter. The truck body, doors. trailer, or freight container must be se- cured on the flatcar so that it cannot [Amdt. 174–83, 61 FR 28677, June 5, 1996] change position during transit. § 174.57 Cleaning cars. [Amdt. 174–26, 41 FR 16092, Apr. 15, 1976, as amended by Amdt. 174–26A, 41 FR 40685, Sept. All hazardous material which has 20, 1976; Amdt. 174–38, 45 FR 32698, May 19, leaked from a package in any rail car 1980; Amdt. 174–39, 45 FR 81572, Dec. 11, 1980; or on other railroad property must be Amdt. 174–59, 51 FR 5974, Feb. 18, 1986; Amdt. carefully removed. 174–68, 57 FR 45464, Oct. 1, 1992; Amdt. 174–79, 59 FR 64744, Dec. 15, 1994] § 174.59 Marking and placarding of rail cars. § 174.63 Portable tanks, IM portable tanks, intermediate bulk con- No person may transport a rail car tainers, cargo tanks, and multi-unit carrying hazardous materials unless it tank car tanks. is marked and placarded as required by (a) A carrier may not transport a this subchapter. Placards and car cer- bulk packaging (e.g., portable tank, IM tificates lost in transit must be re- portable tank, intermediate bulk con- placed at the next inspection point, tainer, cargo tank, or multi-unit tank and those not required must be re- car tank) containing a hazardous mate- moved at the next terminal where the rial in container-on-flatcar (COFC) or train is classified. For Canadian ship- trailer-on-flatcar (TOFC) service ex- ments, required placards lost in tran- cept as authorized by this section or sit, must be replaced either by those unless approved for transportation by required by part 172 of this subchapter the Associate Administrator for Safe- or by those authorized under § 171.12a. ty, FRA. [Amdt. 174–26, 41 FR 16092, Apr. 15, 1976, as (b) A bulk packaging containing a amended by Amdt. 174–48, 50 FR 41521, Oct. hazardous material (including IM 101 11, 1985] and IM 102 when appropriate according to dimensions and weight distribution) § 174.61 Transport vehicles and freight may be transported inside a fully containers on flat cars. closed transport vehicle or fully closed (a) A transport vehicle, freight con- freight container provided it is prop- tainer, or package containing a haz- erly secured with a restraint system ardous material must be designed and that will prevent it from changing po- loaded so that it will not become dam- sition, sliding into other packages, or
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contacting the side or end walls (in- (e) A carrier may not transport a cluding doors) under conditions nor- cargo tank or multi-unit tank car tank mally incident to transportation. containing a hazardous material in (c) When not transported in conform- TOFC or COFC service unless approved ance with and subject to paragraph (b) for such service by the Associate Ad- of this section, a bulk packaging may ministrator for Safety, FRA. However, be transported in COFC service or in the event of an accident or incident, TOFC service subject to the following no such approval is necessary for the conditions as applicable: transportation of a cargo tank con- (1) The bulk packaging contains a taining a hazardous material in TOFC material packaged in accordance with service under the following condi- § 173.240, 173.241, 173.242, or 173.243 of tion(s): this subchapter; (1) There is an emergency need for the cargo tank in order to mitigate the (2) The tank and flatcar conform to consequences of an incident; and requirements in AAR 600 of the AAR (2) Movement of the cargo tank is Specifications for Tank Cars, Speci- limited to transportation necessary for fication M–1002, entitled ‘‘Specifica- emergency purposes. tions for Acceptability of Tank Con- tainers’’; [Amdt. 174–79, 59 FR 64744, Dec. 15, 1994] (3) For TOFC service, the trailer § 174.67 Tank car unloading. chassis conforms to requirements in paragraphs 3, 4, 5, and 6 of AAR Speci- (a) In unloading tank cars, the fol- fication M–943 ‘‘Container Chassis For lowing rules must be observed (see sub- TOFC Service’’ of the AAR specifica- part F of this part for gases): tion for ‘‘Specially Equipped Freight (1) Unloading operations must be per- Car and Intermodal Equipment’’; formed only by reliable persons prop- (4) For COFC service, the container erly instructed in unloading hazardous support and securement systems con- materials and made responsible for form to requirements in Specification careful compliance with this part. M–952 ‘‘Intermodal Container Support (2) Brakes must be set and wheels and Securement Systems for Freight blocked on all cars being unloaded. Cars’’, of the AAR specification for (3) Caution signs must be so placed ‘‘Specially Equipped Freight Car and on the track or cars to give necessary warning to persons approaching the Intermodal Equipment’’; cars from the open end of a siding and (5) If transported in a well car— must be left up until after the cars are (i) The tank is not in a double- unloaded and disconnected from the stacked configuration (i.e., no freight discharge connection. The signs must container or portable tank is placed be of metal or other comparable mate- above or below the tank); and rial, at least 30 cm (12 inches) high by (ii) The tank is transported in the 38 cm (15 inches) wide in size, and bear well with its outlet valve facing out- the words, ‘‘STOP—Tank Car Con- ward towards the end of the well and nected’’, or ‘‘STOP—Men at Work’’, the away from any adjacent tank or con- word ‘‘STOP’’ being in letters at least tainer; and 10 cm (3.9 inches) high and the other (6) All securement fittings shall be words in letters at least 5 cm (2 inches) fully engaged and in the locked posi- high. The letters must be white on a tion, provided; however, if the tank is blue background. transported in a well car, it must be (4) Before a manhole cover or outlet loaded into a well appropriate for the valve cap is removed from a tank car, length of the container and any void the car must be relieved of all interior filling device present must be secured pressure by cooling the tank with in its designed appropriate position. water or by venting the tank by raising (d) An approval in effect on February the safety valve or opening the dome 28, 1991 for the transportation of port- vent at short intervals. However, if able tanks or IM portable tanks in venting to relieve pressure will cause a TOFC or COFC service expires on the dangerous amount of vapor to collect date stated in the approval letter or outside the car, venting and unloading June 15, 1995, whichever is later. must be deferred until the pressure is
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