[Table revised by Order 29, 22 F. R. 2227, Apr. 4, 1957, as amended by Order 31, 22 F. R. 4791, July 9, 1957; Order 82, 22 F. R. 7837, Oct. 3, 1957; Order 34, 23 F. R. 2327, Apr. 10, 1958; Order 35, 23 F.R. 4030, June 10, 1958; Order 39, 24 F.R. 5640, July 14, 1959; Order 40, 24 F.R. 8059, Oct. 6, 1959; Order 41, 24 F.R. 10111, Dec. 15, 1959; Order 42, 25 F.R. 3102, Apr. 12, 1960; Order 44, 25 FR. 10395, Oct. 29, 1960; Order 45, 26 F.R. 1016, Feb. 2, 1961; Order 48, 26 F.R. 4996, June 6, 1961; Order 51, 26 F.R. 9402, Oct. 6, 1961; Order 53, 26 F.R. 12703, Dec. 29, 1961]

equipped with excess-flow valves of approved design.

[Note 9 amended, Order 48, 26 F.R. 4996, June 6, 1961]

NOTE 11: Before

60,000 pounds, except that not more than
110,000 pounds nor less than 107,800 pounds
of chlorine may be loaded in such cars if
insulated with 4 inches of corkboard and
constructed, maintained, and retested in
full compliance with I.C.C. Specification
Cars may be registered and
either 105A300-W ΟΙ
jackets stenciled
105A500-W and equipped with the safety
valve required by the specification to which
registered.

[Note 18 amended by Order 42, 25 F.R. 3102,
Apr. 12, 1960]

Prior Amendments

1957: 22 F.R. 2227, Apr. 4.

NOTE 19: This gas may be transported in authorized tank car tanks stenciled "DISPERSANT GAS," or "REFRIGERANT GAS." [Note 19 amended by Order 45, 26 F.R. 1016, Feb. 2, 1961]

Prior Amendments

1958: 23 F.R. 2327, Apr. 10.

105A500-W. an ICC-105A500-W or ICC-105A600-W (§§ 78.288 or 78.289 of this chapter) tank car may be used for the transportation of liquefied carbon dioxide, the following requirements must be met: Tank must be lagged with an approved insulation material of a thickness so that the thermal conductance is not more than 0.03 B. t. u. per square foot per degree F. differential in temperature per hour; except that the insulation thickness directly over the center sills may be reduced to give thermal conductance not exceeding 0.04 B. t. u. per square foot, per degree F. differential in temperature per hour; this reduction is to permit an anchorage which must not exceed seven (7) inches from top of center sills to bottom of tank. Tank must be equipped with one safety valve of approved design set to open at a pressure not exceeding three-fourths of the test pressure of the tank and one frangible disc device of approved design set to function at a pressure less than the test pressure of the tank. The discharge capacity of each of these safety devices must be sufficient to prevent building up of pressure in tank in excess of three-fourths of the test pressure of the tank. Tanks must be equipped with two (2) pressure-regulating valves of approved design, set to open at a pressure not to exceed 350 pounds per square inch on 105A500-W (§ 78.288 of this chapter) tanks and at a pressure not to exceed 400 pounds per square inch on 105A600-W (§ 78.289 of this chapter) tanks. Each regulating valve and safety device must have its final discharge piped to the outside of the protective housing.

[Note 11 amended by Order 31, 22 F. R. 4791, July 9, 1957]

Prior Amendments

1957: 22 F. R. 2227, Apr. 4.

NOTE 12: Tanks complying with ICC-106A or ICC-110A (§§ 78.275, 78.276, 78.293, or 78.295 of this chapter) specifications, used for the transportation of compressed gases as authorized in § 73.314 (a), may be transported on trucks or semitrailers only, when securely chocked or clamped thereon to prevent shifting, and provided adequate facilities are present for handling tanks where transfer in transit is necessary. See § 74.560 of this chapter for rail freight-motor vehicle shipments.

[Note 12 amended by Order 34, 23 F. R. 2327, Apr. 10, 1958]

Prior Amendments

NOTE 20: Container shall not be equipped with safety devices of any description. [Note 20 added by Order 29, 22 F. R. 2227, Apr. 4, 1957]

NOTE 21: A filling density of 58.8 percent may be used during the months of November inclusive. When this filling to March, density is used, tank cars must be loaded and shipped directly to consumers for unloading. Storage in transit is not permitted. [Note 21 amended by Order 34, 23 F. R. 2327, Apr. 10, 1958]

Prior Amendments

1957: 22 F. R. 7837, Oct. 3.

NOTE 22: Openings in tank heads to faciliate application of nickel lining are authorized and must be closed in an approved

manner.

NOTE 23: Before an ICC-105A600-W (§ 78.289 of this chapter) tank car may be used for the transportation of vinyl fluoride, inhibited, the following requirements must be met: Tank must be lagged with an approved insulation material of a thickness so that the thermal conductance is not more than 0.03 B.t.u. per square foot per degree F. differential in temperature per hour; except that the insulation thickness directly over center sills may be reduced to give thermal conductance not exceeding 0.04 B.t.u. per square foot per degree F. differential in temperature per hour; this reduction is to permit an anchorage which must not exceed seven inches from top of center sills to bottom of tank. In addition to the safety valve required by § 78.289-13, the tank must be equipped with one frangible disc device of approved design set to function at a pressure less than 600 pounds per square inch but not less than 450 pounds per square inch. The discharge capacity of each of these safety devices must be sufficient to prevent building up of pressure in tank in

[Table revised by Order 34, 23 F.R. 2327, Apr. 10, 1958, as amended by Order 37, 24 F.R. 906, Feb. 6, 1959; Order 39, 24 F.R. 5640, July 14, 1959; Order 41, 24 F.R. 10111, Dec. 15, 1959; Order 43, 25 F.R. 6627, July 14, 1960; Order 48, 26 F.R. 4997, June 6, 1961; Order 51, 26 F.R. 9402, Oct. 6, 1961; Order 53, 26 F.R. 12704, Dec. 29, 1961]

Prior Amendments 1957: 22 F. R. 7833, Oct. 8.