1、1125 Pipeline and Hazardous Materials Safety Admin., DOT Pt. 180 on the non-protected side of the plate indi-cate a plate temperature in excess of 427 C (800 F). (6) A minimum of three consecutive suc-cessful simulation fire tests must be per-formed for each thermal protection system. 3. Simulated t
2、orch fire test. a. A torch-fire environment must be simu-lated in the following manner: (1) The source of the simulated torch must be a hydrocarbon fuel with a flame tempera-ture of 1,204 C (2,200 F), plus-or-minus 37.8 C (100 F), throughout the duration of the test. Furthermore, torch velocities mu
3、st be 64.4 km/h 16 km/h (40 mph 10 mph) through-out the duration of the test. (2) A square bare plate with thermal prop-erties equivalent to the material of construc-tion of the tank car must be used. The plate dimensions must be at least four feet by four feet by nominal 1.6 cm (0.625 inch) thick.
4、The bare plate must be instrumented with not less than nine thermocouples to record the thermal response of the plate. The thermocouples must be attached to the sur-face not exposed to the simulated torch and must be divided into nine equal squares with a thermocouple placed in the center of each sq
5、uare. (3) The bare plate holder must be con-structed in such a manner that the only heat transfer to the back side of the plate is by heat conduction through the plate and not by other heat paths. The apex of the flame must be directed at the center of the plate. (4) Before exposure to the simulated
6、 torch, none of the temperature recording devices may indicate a plate temperature in excess of 37.8 C (100 F) or less than 0 C (32 F). (5) A minimum of two thermocouples must indicate 427 C (800 F) in four minutes, plus- or-minus 30 seconds, of torch simulation ex-posure. b. A thermal protection sy
7、stem must be tested in the simulated torch-fire environ-ment described in paragraph 3a of this ap-pendix in the following manner: (1) The thermal protection system must cover one side of the bare plate identical to that used to simulate a torch fire under paragraph 3a(2) of this appendix. (2) The ba
8、ck of the bare plate must be in-strumented with not less than nine thermocouples placed as described in para-graph 3a(2) of this appendix to record the thermal response of the material. (3) Before exposure to the simulated torch, none of the thermocouples on the back side of the thermal protection s
9、ystem configura-tion may indicate a plate temperature in ex-cess of 37.8 C (100 F) nor less than 0 C (32 F). (4) The entire outside surface of the ther-mal protection system must be exposed to the simulated torch-fire environment. (5) A torch-simulation test must be run for a minimum of 30 minutes.
10、The thermal pro-tection system must retard the heat flow to the plate so that none of the thermocouples on the backside of the bare plate indicate a plate temperature in excess of 427 C (800 F). (6) A minimum of two consecutive success-ful torch-simulation tests must be performed for each thermal pr
11、otection system. Amdt. 17950, 60 FR 49078, Sept. 21, 1995, as amended at 75 FR 53597, Sept. 1, 2010 PART 180CONTINUING QUALI-FICATION AND MAINTENANCE OF PACKAGINGS Subpart AGeneral Sec. 180.1 Purpose and scope. 180.2 Applicability. 180.3 General requirements. Subpart B Reserved Subpart CQualificatio
12、n, Maintenance and Use of Cylinders 180.201 Applicability. 180.203 Definitions. 180.205 General requirements for requali-fication of specification cylinders. 180.207 Requirements for requalification of UN pressure receptacles. 180.209 Requirements for requalification of specification cylinders. 180.
13、211 Repair, rebuilding and reheat treat-ment of DOT-4 series specification cyl-inders. 180.212 Repair of seamless DOT 3-series specification cylinders and seamless UN pressure receptacles. 180.213 Requalification markings. 180.215 Reporting and record retention re-quirements. 180.217 Requalification
14、 requirements for MEGCs. Subpart DQualification and Maintenance of IBCs 180.350 Applicability and definitions. 180.351 Qualification of IBCs. 180.352 Requirements for retest and inspec-tion of IBCs. Subpart EQualification and Maintenance of Cargo Tanks 180.401 Applicability. 180.403 Definitions. 180
15、.405 Qualification of cargo tanks. 180.407 Requirements for test and inspection of specification cargo tanks. 180.409 Minimum qualifications for inspec-tors and testers. 180.411 Acceptable results of tests and in-spections. VerDate Mar2010 15:30 Dec 30, 2010 Jkt 220213 PO 00000 Frm 01135 Fmt 8010 Sf
16、mt 8010 Q:49X49220213.XXX ofr150 PsN: PC150Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1126 49 CFR Ch. I (10110 Edition) 180.1 180.413 Repair, modification, stretching, re-barrelling, or mounting of specification cargo tanks. 180.415 Test and ins
17、pection markings. 180.416 Discharge system inspection and maintenance program for cargo tanks transporting liquefied compressed gases. 180.417 Reporting and record retention re-quirements. Subpart FQualification and Maintenance of Tank Cars 180.501 Applicability. 180.503 Definitions. 180.505 Quality
18、 assurance program. 180.507 Qualification of tank cars. 180.509 Requirements for inspection and test of specification tank cars. 180.511 Acceptable results of inspections and tests. 180.513 Repairs, alterations, conversions, and modifications. 180.515 Markings. 180.517 Reporting and record retention
19、 re-quirements. 180.519 Periodic retest and inspection of tank cars other than single-unit tank car tanks. Subpart GQualification and Maintenance of Portable Tanks 180.601 Applicability. 180.603 Qualification of portable tanks. 180.605 Requirements for periodic testing, inspection and repair of port
20、able tanks. APPENDIX A TO PART 180INTERNAL SELF- CLOSING STOP VALVE EMERGENCY CLO-SURE TEST FOR LIQUEFIED COMPRESSED GASES APPENDIX B TO PART 180ACCEPTABLE INTER-NAL SELF-CLOSING STOP VALVE LEAKAGE TESTS FOR CARGO TANKS TRANSPORTING LIQUEFIED COMPRESSED GASES APPENDIX C TO PART 180EDDY CURRENT EX-AM
21、INATION WITH VISUAL INSPECTION FOR DOT 3AL CYLINDERS MANUFACTURED OF ALUMINUM ALLOY 6351T6 AUTHORITY: 49 U.S.C. 51015128; 49 CFR 1.53. SOURCE: Amdt. 1802, 54 FR 25032, June 12, 1989, unless otherwise noted. Subpart AGeneral 180.1 Purpose and scope. This part prescribes requirements pertaining to the
22、 maintenance, recon-ditioning, repair, inspection and test-ing of packagings, and any other func-tion having an effect on the continuing qualification and use of a packaging under the requirements of this sub-chapter. 180.2 Applicability. (a) Any person who performs a func-tion prescribed in this pa
23、rt shall per-form that function in accordance with this part. (b) Any person who performs a func-tion prescribed in this part is consid-ered subject to the regulations of this subchapter when that person (1) Makes any representation indi-cating compliance with one or more of the requirements of this
24、 part; or (2) Reintroduces into commerce a packaging that bears markings indi-cating compliance with this part. Amdt. 1802, 54 FR 25032, June 12, 1989, as amended by Amdt. 1802, 56 FR 27877, June 17, 1991 180.3 General requirements. (a) No person may represent, mark, certify, sell, or offer a packag
25、ing or container as meeting the requirements of this part, or a special permit per-taining to this part issued under sub-chapter A of this chapter, whether or not the packaging or container is in-tended to be used for the transpor-tation of a hazardous material, unless it is marked, maintained, reco
26、ndi-tioned, repaired, or retested, as appro-priate, in accordance with this part, an approval issued thereunder, or a special permit issued under subchapter A of this chapter. (b) The representations, markings, and certifications subject to the prohi-bitions of paragraph (a) of this section include:
27、 (1) Identifications that include the letters DOT, MC, ICC, or UN; (2) Special permit, approval, and reg-istration numbers that include the let-ters DOT; (3) Test dates displayed in associa-tion with specification, registration, approval, or exemption markings indi-cating conformance to a test or re
28、test requirement of this subchapter, an ap-proval issued thereunder, or a special permit issued under subchapter A of this chapter; (4) Documents indicating conform-ance to the testing, inspection, mainte-nance or other continuing qualification requirements of this part; and (5) Sales literature, in
29、cluding adver-tising, indicating that the packaging VerDate Mar2010 15:30 Dec 30, 2010 Jkt 220213 PO 00000 Frm 01136 Fmt 8010 Sfmt 8010 Q:49X49220213.XXX ofr150 PsN: PC150Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1127 Pipeline and Hazardous Mat
30、erials Safety Admin., DOT 180.203 or container represented therein con-forms to requirements contained in subchapter A or C of this chapter. Amdt. 1802, 54 FR 25032, June 12, 1989, as amended by Amdt. 1803, 58 FR 33306, June 16, 1993; 70 FR 73166, Dec. 9, 2005 Subpart B Reserved Subpart CQualificati
31、on, Mainte-nance and Use of Cylinders SOURCE: 67 FR 51660, Aug. 8, 2002, unless otherwise noted. 180.201 Applicability. This subpart prescribes require-ments, in addition to those contained in parts 107, 171, 172, 173, and 178 of this chapter, for the continuing qualifica-tion, maintenance, or perio
32、dic requali-fication of DOT specification and ex-emption cylinders and UN pressure re-ceptacles. 71 FR 33894, June 12, 2006 180.203 Definitions. As used in this section, the word cylinder includes UN pressure recep-tacles. In addition to the definitions contained in 171.8 of this subchapter, the fol
33、lowing definitions apply to this subpart: Commercially free of corrosive compo-nents means a hazardous material hav-ing a dew point at or below minus 46.7 C (minus 52 F) at 101kPa (1 atmos-phere) and free of components that will adversely react with the cylinder (e.g. chemical stress corrosion). Con
34、demn means a determination that a cylinder is unserviceable for the con-tinued transportation of hazardous ma-terials in commerce and that the cyl-inder may not be restored by repair, re-building, requalification, or any other procedure. Defect means an imperfection requir-ing removal of a cylinder
35、from service. Elastic expansion means a temporary increase in a cylinders volume, due to application of pressure, that is lost when pressure is released (elastic ex-pansion = total expansion minus per-manent expansion). Filled or charged means an introduc-tion or presence of a hazardous mate-rial in
36、 a cylinder. Non-corrosive service means a haz-ardous material that, in the presence of moisture, is not corrosive to the ma-terials of construction of a cylinder (including valve, pressure relief device, etc.). Over-heated means a condition in which the temperature of any portion of an aluminum cyl
37、inder has reached 176 C (350 F) or higher, or in which the temperature of any portion of a steel or nickel cylinder has reached 343 C (650 F) or higher. Permanent expansion means a perma-nent increase in a cylinders volume after the test pressure is released. Proof pressure test means a pressure tes
38、t by interior pressurization without the determination of a cylinders ex-pansion. Rebuild means the replacement of a pressure part (e.g. a wall, head, or pres-sure fitting) by welding. Rejected cylinder means a cylinder that cannot be used for the transpor-tation of a hazardous material in com-merce
39、 without repair, rebuilding, and requalification. Repair means a procedure for correc-tion of a rejected cylinder that may in-volve welding. Requalification means the completion of a visual inspection and/or the test(s) required to be performed on a cylinder to determine its suitability for contin-u
40、ed service. Requalification identification number or RIN means a code assigned by DOT to uniquely identify a cylinder requali-fication, repair, or rebuilding facility. Test pressure means the pressure used for the requalification of a cylinder. Total expansion means the total in-crease in a cylinder
41、s volume due to ap-plication of the test pressure. Visual inspection means an internal or external visual examination, or both, performed as part of the cylinder re-qualification process. Volumetric expansion test means a pressure test to determine the total and permanent expansion of a cylinder at
42、a given pressure. The volumetric ex-pansion test is conducted using the water jacket or direct expansion meth-ods: (1) Water jacket method means a volu-metric expansion test to determine a VerDate Mar2010 15:30 Dec 30, 2010 Jkt 220213 PO 00000 Frm 01137 Fmt 8010 Sfmt 8010 Q:49X49220213.XXX ofr150 Ps
43、N: PC150Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1128 49 CFR Ch. I (10110 Edition) 180.205 cylinders total and permanent expan-sion by measuring the difference be-tween the volume of water the cylinder externally displaces at test pressure and
44、 the volume of water the cylinder externally displaces at ambient pres-sure. (2) Direct expansion method means a volumetric expansion test to calculate a cylinders total and permanent ex-pansion by measuring the amount of water forced into a cylinder at test pressure, adjusted for the compress-ibili
45、ty of water, as a means of deter-mining the expansion. 67 FR 51660, Aug. 8, 2002, as amended at 71 FR 33894, June 12, 2006 180.205 General requirements for re-qualification of specification cyl-inders. (a) General. Each cylinder used for the transportation of hazardous mate-rials must be an authoriz
46、ed packaging. To qualify as an authorized packaging, each cylinder must conform to this subpart, the applicable requirements specified in part 173 of this subchapter, and the applicable requirements of sub-part C of part 178 of this subchapter. (b) Persons performing requalification functions. No pe
47、rson may represent that a repair or requalification of a cylinder has been performed in accord-ance with the requirements in this sub-chapter unless that person holds a cur-rent approval issued under the proce-dural requirements prescribed in sub-part I of part 107 of this chapter. No person may mar
48、k a cylinder with a RIN and a requalification date or oth-erwise represent that a DOT specifica-tion or special permit cylinder has been requalified unless all applicable requirements of this subpart have been met. A person who requalifies cylinders must maintain the records prescribed in 180.215 at
49、 each location at which it inspects, tests, or marks cylinders. (c) Periodic requalification of cylinders. Each cylinder bearing a DOT specifica-tion marking must be requalified and marked as specified in the Requalifica-tion Table in this subpart. Each cyl-inder bearing a DOT special permit number must be requalified and marked in conformance with this sec-tion and the terms of the app
