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By Authority Of THE UNITED STATES OF AMERICA Legally Binding Document By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE: Criminal penalties may apply for noncompliance. e Document Name: CFR Section(s): Standards Body: Official Incorporator: THE EXECUTIVE DIRECTOR OFFICE OF THE FEDERAL REGISTER WASHINGTON, D.C. By Authority Of THE UNITED STATES OF AMERICA Legally Binding Document By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE: Criminal penalties may apply for noncompliance. e Document Name: CFR Section(s): Standards Body: Official Incorporator: THE EXECUTIVE DIRECTOR OFFICE OF THE FEDERAL REGISTER WASHINGTON, D.C. CGA C-12-1994 (OBSOLETE) QUALIFICATION PROCEDURE FOR ACETYLENE CYLINDER DESIGN THIRD EDITION COMPRESSED GAS ASSOCIATION, INC. 4221 Walney Road, 5th Floor Chantilly, VA 20151 Phone: 703-788-2700 Fax: 703-961-1831 E-mail: [email protected] PLEASE NOTE: The information contained in this document was obtained from sources believed to be reliable and is based on technical information and experience currently available from members of the Compressed Gas Association, Inc. and others. However, the Association or its members, jointly or severally, make no guarantee of the results and assume no liability or responsibility in connection with the information or suggestions herein contained. Moreover, it should not be assumed that every acceptable commodity grade, test or safety procedure or method, precaution, equipment or device is contained within, or that abnormal or unusual circumstances may not warrant or suggest further requirements or additional procedure. This document is subject to periodic review, and users are cautioned to obtain the latest edition. The Associa tion invites comments and suggestions for consideration. In connection with such review, any such comments or suggestions will be fully reviewed by the Association after giving the party, upon request, a reasonable op portunity to be heard. Proposed changes may be submitted via the Internet at our web site, www.cganet.com. This document should not be confused with Federal, state, provincial, or municipal specifications or regulations; insurance requirements; or national safety codes. While the Association recommends reference to or use of this document by government agencies and others, this document is purely voluntary and not binding. A listing of all publications, audiovisual programs, safety and technical bulletins, and safety posters is available via the Internet at our website at www.cganet.com. For more information contact CGA at Phone: 703-788-2700, ext. 799. E-mail: [email protected]. NOTE- Technical changes from the previous edition are underlined. THIRD EDITION 1994 © 1994 BY THE COMPRESSED GAS ASSOCIATION, INC. 4221 WALNEY ROAD, 5TH FLOOR, CHANTILLY, VA 20151 Printed in U.S.A. PAGE iV __________- ---'C"'-o"'-M"""-PR'-"E"'-'s""s'-=E'""D'--'G""A'-"s::..AS~S""O""C""I""AT_'_'IO"'";:,.::N.J'. ..."IN,"C",,-. ____ ____C GA C-12- 1994 Contents Page Introduction ..................................................................................................................................................... 1 2 Scope ............................................................................................................................................................. 1 3 Information to be recorded ............................................................................................................................. 2 3.1 Cylinder design description ................................................................................................................. 2 3.2 Results of tests .................................................................................................................................... 2 4 Acceptable test results ................................................................................................................................... 2 5 Tests ............................................................................................................................................................... 3 5.1 Proof of mechanical strength of filler test ............................................................................................ 3 5.2 Flashback test ..................................................................................................................................... 4 5.3 Impact stability test... ........................................................................................................................... 6 5.4 Fire test ............................................................................................................................................... 7 6 References ................................................................................................................................................... 11 Table Table 1- Minimum number of cylinders required for tests .................................................................................... 3 Figures Figure 1- Flashback test flashblock assembly for acetylene cylinders .............................................................. 14 Figure 2-lsometric view offire test apparatus assembly ................................................................................... 14 Figure 3-Chimney assembly ............................................................................................................................. 15 Figure 4- Base ................................................................................................................................................... 15 Figure 5- Center assembly ................................................................................................................................ 16 Figure 6-Bottom wind deflector ......................................................................................................................... 16 Figure 7-Cylinder stand .................................................................................................................................... 17 Figure 8-Top assembly for 8-inch diameter cylinders ....................................................................................... 17 Figure 9-Top assembly for 12-inch diameter cylinders ..................................................................................... 18 Figure 10- Draft deflector for 8-inch diameter cylinders ..................................................................................... 18 Figure 11- Draft deflector for 12-inch diameter cylinders ................................................................................... 19 Figure 12-Secondary wind deflector ................................................................................................................. 19 Figure 13-Wheel type burner unit with base and fire brick cylinder support installed ....................................... 20 Figure 14-Burner unit with bottom sind deflector installed ................................................................................ 20 Figure 15- Spark ignitier being installed through base ...................................................................................... 21 Figure 16-Bottom chimney section installed. Blasting mats for personnel protection ....................................... 21 Figure 17- Top chimney section with downdraft deflector installed ................................................................... 22 Figure 18- Lower isulation, two flue gas and two cylinder surface thermocouples, spark igniter and propane fuel line installed .......................................................................................................... 22 Figure 19-Wood bonfire test -view of wood stack for 8" cylinder -step 1 ........................................................ 23 Figure 20- Wood bonfire test -view of wood stack for 8" cylinder -step 2 ........................................................ 23 Figure 21-Wood bonfire test -view of wood stack for 8" cylinder -step 3 ........................................................ 24 Appendix Appendix A- Burner and ignition system ............................................................................................................ 12 Appendix B- Correlation of drop weight impact versus explosive charge .......................................................... 13 Appendix C-Wood bonfire test .......................................................................................................................... 23 CGA C-12-1994_ ______. .C;::"O":..M:,:.::P....R:.,;:E.:,o:.SS""E::..:O"-=G"A-'""S""A'-..:s:;""s"'O"'C.:.:.A.I.:.T.:..:..O:I:..:.N.:.J.,-"IN-"C"-'. ____________P AGE 1 1 Introduction 1.1 These gualification tests are to be used by the manufacturer of acetylene cylinders as reguired in the Hazard ous Materials Regulations and the specifications for acetylene cylinders as prescribed by the Department of Transportation (DOT) in the United States Code of Federal Regulations, Title 49 Parts 100-199 [1]1. In Canada the specifications for acetylene cylinders are prescribed in Canadian Standards Association (CSA) Standard "CAN/CSA 8339/M88 - Cylinders, Spheres and Tubes for the Transportation of Dangerous Goods [31." This standard is mandated by the Transportation of Dangerous Goods (TOG) Regulations [21 of Transport Canada (TC). 1.2 The regulations in 49 CFR 173.303 and CSA 8339 specify that acetylene cylinders shall consist of metal shells filled with a porous material and this material must be charged with a suitable solvent. The cylinders containing the porous material and solvent. and representative samples of cylinders charged with acetylene, shall be tested with satisfactory results in accordance with this pamphlet. 1.3 The regulations also in 49 CFR 173.34 and CSA 8339 specify that acetylene cylinders must be eguipped with pressure relief devices capable of preventing a rupture of the normally charged cylinder when subjected to a fire test conducted in accordance with this pamphlet. 1.4 The tests outlined in 5.1, 5.2, and 5.3 are the tests reguired to prove that the porous material, hereafter called filler, as installed in a completed cylinder with solvent and acetylene, will: (1) adeguately stabilize acetylene by preventing progressive decomposition within the filler when subjected to an internal flash or severe impact; and (2) not diSintegrate or sag when wet with solvent and subjected to normal service (simulated transportation vi brations). These tests fulfill the reguirements of the regulations found in 49 CFR 173.303 and CSA 8339. 1.5 The test outlined in 5.4 fulfills the reguirements of 49 CFR 173.34 and CSA 8339. 2 Scope 2.1 The four tests in 5.1 through 5.4 are required to be conducted when there is a new cylinder design or a signifi cant design change. 2.2 These tests are to be conducted, and the cylinders must pass all four tests, prior to starting quantity production and introduction of a specific cylinder model into service. 2.3 Cylinders to be tested must be selected from a pilot production run of cylinders of a sufficiently large quantity to permit the use of planned production equipment and procedures. Cylinders to be tested will be typical of those produced in an actual production operation. 1 References are indicated by bracketed numbers and are listed in the order of appearance. See Section 6, References PAGE 2 ______ ____. .c.!:~O:.!!M!.!P...!R.!=.:ES~S'_=E"'"D...G!:~A~S~A.!!:s~s"'"O~CI~A.T!....I!.O=c!.!.N !L.!I!.!.NC~._ ______C GA C-12-1994 2.4 All test cylinders are to be complete and of a quality suitable for service, including shell, filler, solvent, valve, core hole packing, pressure relief devices and painting. 2.5 Cylinders used in any of these tests must be scrapped. 3 Information to be recorded 3.1 Cylinder design description The following information must be recorded and placed in a file covering each new cylinder design and each significant design change. Provide sufficient detail to permit cylinders of that model or design to be identified. 3.1.1 A brief general description of the filler, including (a) nature of ingredients, (b) method of inserting filling material into shell, (c) design, (d) porosity range, (e) the actual porosity determined by tests on a completed cylinder, and (f) a list of the manufacturer's maximum clearance limits between the filler and shell for each cylinder size. 3.1.2 Drawings of the cylinder giving full details, including (a) inside diameter, (b) wall thickness, (c) length, (d) manu facturer's rated gas capacity when charged to 250 psig at 70°F (1720 kPa at 21.1°C), (e) interior shell volume in pounds water capacity (maximum and minimum), (f) tare weight of the cylinder (maximum and minimum), (g) weight of solvent to be added (maximum and minimum), (h) core hole size, and, if used (i) core hole packing, material, size and quantity. 3.2 Results of tests A record of the tests must be prepared, dated, and signed by the person responsible for performing the tests and must show the following: 3.2.1 The number of cylinders of each type tested, date of tests, description of tests (including such items as pres sure, drop height, clearance measurements, number of cycles, heat input, proof of ignition, etc.), and results of the tests. 3.2.2 If retesting is required because a model fails any of the tests, the same information must also be recorded for those tests. 4 Acceptable test results 4.1 All cylinders required for each of the four tests must pass. 4.2 If any of the specified sampling of cylinders fail a particular test, that test shall be repeated on an equivalent sampling of cylinders selected from the pilot production run. Table 1 shows the minimum number of cylinders required for the four tests. CGA C-12-1994 _______ -'=C'O-":.;M.:c:P....:R..."E".S;,:"S"-E:=.:O"--"G=;,A:.."S"..:A....:S,:"S""O"'-C";.I:,A:.-'T-'.;..O:I""-N.:.J"...:.;IN""C"'._ ___________P AGE 3 Table 1-Minimum number of cylinders required for tests Test Cylinders Mechanical Strength of Filler 3 Flashback 3 Impact Stability 1 (Largest) Fire 3 4.3 If any of the retest cylinders fail and the cause of failure is found to be a design or manufacturing deficiency, the problem must be corrected. Another pilot production run shall be made, and all four tests shall again be con ducted on the specified number of cylinders. All cylinders must pass. 5 Tests 5.1 Proof of mechanical strength of filler test 5.1.1 This test is to prove that the filler will withstand shipment without developing excessive or harmful settling, sag ging, disintegration, or cracking. 5.1.2 Once a design has been qualified, this test must be successfully performed again if there are significant design changes to the filler or interior shape of the cylinder. 5.1.3 Three completely assembled cylinders of the largest standard production size shall be selected and tested. They shall be charged with solvent to the maximum permitted by the design. 5.1.4 After removal of the core hole packing, the clearance between the top of the filler and the inside top of the cyl inder shell (top clearance) shall be measured in two locations 1800 apart and recorded. A reference mark shall be placed on the spud to indicate the points of measurement. Measurements performed after the test shall be made at the same points. 5.1.5 The cylinder shall be placed upright on an apparatus which is so arranged as to subject the cylinder to succes sive free drops onto a steel or cast iron surface solidly supported by a concrete foundation. 5.1.6 The cylinder shall be subjected to either: 5.1.6.1 Five thousand consecutive free drops of 3 inches (76.2mm); or 5.1.6.2 One hundred thousand consecutive free drops of 1.5 inches (38.1 mm).

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CGA C-12: Qualification Procedure for Acetylene Cylinder Design PDF

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By Authority Of THE UNITED STATES OF AMERICA Legally Binding Document By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE: Criminal penalties may apply for noncompliance. e Document Name: CFR Section(s): Standards Body: Official Incorporator: THE EXECUTIVE DIRECTOR OFFICE OF THE FEDERAL REGISTER WASHINGTON, D.C. By Authority Of THE UNITED STATES OF AMERICA Legally Binding Document By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE: Criminal penalties may apply for noncompliance. e Document Name: CFR Section(s): Standards Body: Official Incorporator: THE EXECUTIVE DIRECTOR OFFICE OF THE FEDERAL REGISTER WASHINGTON, D.C. CGA C-12-1994 (OBSOLETE) QUALIFICATION PROCEDURE FOR ACETYLENE CYLINDER DESIGN THIRD EDITION COMPRESSED GAS ASSOCIATION, INC. 4221 Walney Road, 5th Floor Chantilly, VA 20151 Phone: 703-788-2700 Fax: 703-961-1831 E-mail: [email protected] PLEASE NOTE: The information contained in this document was obtained from sources believed to be reliable and is based on technical information and experience currently available from members of the Compressed Gas Association, Inc. and others. However, the Association or its members, jointly or severally, make no guarantee of the results and assume no liability or responsibility in connection with the information or suggestions herein contained. Moreover, it should not be assumed that every acceptable commodity grade, test or safety procedure or method, precaution, equipment or device is contained within, or that abnormal or unusual circumstances may not warrant or suggest further requirements or additional procedure. This document is subject to periodic review, and users are cautioned to obtain the latest edition. The Associa tion invites comments and suggestions for consideration. In connection with such review, any such comments or suggestions will be fully reviewed by the Association after giving the party, upon request, a reasonable op portunity to be heard. Proposed changes may be submitted via the Internet at our web site, www.cganet.com. This document should not be confused with Federal, state, provincial, or municipal specifications or regulations; insurance requirements; or national safety codes. While the Association recommends reference to or use of this document by government agencies and others, this document is purely voluntary and not binding. A listing of all publications, audiovisual programs, safety and technical bulletins, and safety posters is available via the Internet at our website at www.cganet.com. For more information contact CGA at Phone: 703-788-2700, ext. 799. E-mail: [email protected]. NOTE- Technical changes from the previous edition are underlined. THIRD EDITION 1994 © 1994 BY THE COMPRESSED GAS ASSOCIATION, INC. 4221 WALNEY ROAD, 5TH FLOOR, CHANTILLY, VA 20151 Printed in U.S.A. PAGE iV __________- ---'C"'-o"'-M"""-PR'-"E"'-'s""s'-=E'""D'--'G""A'-"s::..AS~S""O""C""I""AT_'_'IO"'";:,.::N.J'. ..."IN,"C",,-. ____ ____C GA C-12- 1994 Contents Page Introduction ..................................................................................................................................................... 1 2 Scope ............................................................................................................................................................. 1 3 Information to be recorded ............................................................................................................................. 2 3.1 Cylinder design description ................................................................................................................. 2 3.2 Results of tests .................................................................................................................................... 2 4 Acceptable test results ................................................................................................................................... 2 5 Tests ............................................................................................................................................................... 3 5.1 Proof of mechanical strength of filler test ............................................................................................ 3 5.2 Flashback test ..................................................................................................................................... 4 5.3 Impact stability test... ........................................................................................................................... 6 5.4 Fire test ............................................................................................................................................... 7 6 References ................................................................................................................................................... 11 Table Table 1- Minimum number of cylinders required for tests .................................................................................... 3 Figures Figure 1- Flashback test flashblock assembly for acetylene cylinders .............................................................. 14 Figure 2-lsometric view offire test apparatus assembly ................................................................................... 14 Figure 3-Chimney assembly ............................................................................................................................. 15 Figure 4- Base ................................................................................................................................................... 15 Figure 5- Center assembly ................................................................................................................................ 16 Figure 6-Bottom wind deflector ......................................................................................................................... 16 Figure 7-Cylinder stand .................................................................................................................................... 17 Figure 8-Top assembly for 8-inch diameter cylinders ....................................................................................... 17 Figure 9-Top assembly for 12-inch diameter cylinders ..................................................................................... 18 Figure 10- Draft deflector for 8-inch diameter cylinders ..................................................................................... 18 Figure 11- Draft deflector for 12-inch diameter cylinders ................................................................................... 19 Figure 12-Secondary wind deflector ................................................................................................................. 19 Figure 13-Wheel type burner unit with base and fire brick cylinder support installed ....................................... 20 Figure 14-Burner unit with bottom sind deflector installed ................................................................................ 20 Figure 15- Spark ignitier being installed through base ...................................................................................... 21 Figure 16-Bottom chimney section installed. Blasting mats for personnel protection ....................................... 21 Figure 17- Top chimney section with downdraft deflector installed ................................................................... 22 Figure 18- Lower isulation, two flue gas and two cylinder surface thermocouples, spark igniter and propane fuel line installed .......................................................................................................... 22 Figure 19-Wood bonfire test -view of wood stack for 8" cylinder -step 1 ........................................................ 23 Figure 20- Wood bonfire test -view of wood stack for 8" cylinder -step 2 ........................................................ 23 Figure 21-Wood bonfire test -view of wood stack for 8" cylinder -step 3 ........................................................ 24 Appendix Appendix A- Burner and ignition system ............................................................................................................ 12 Appendix B- Correlation of drop weight impact versus explosive charge .......................................................... 13 Appendix C-Wood bonfire test .......................................................................................................................... 23 CGA C-12-1994_ ______. .C;::"O":..M:,:.::P....R:.,;:E.:,o:.SS""E::..:O"-=G"A-'""S""A'-..:s:;""s"'O"'C.:.:.A.I.:.T.:..:..O:I:..:.N.:.J.,-"IN-"C"-'. ____________P AGE 1 1 Introduction 1.1 These gualification tests are to be used by the manufacturer of acetylene cylinders as reguired in the Hazard ous Materials Regulations and the specifications for acetylene cylinders as prescribed by the Department of Transportation (DOT) in the United States Code of Federal Regulations, Title 49 Parts 100-199 [1]1. In Canada the specifications for acetylene cylinders are prescribed in Canadian Standards Association (CSA) Standard "CAN/CSA 8339/M88 - Cylinders, Spheres and Tubes for the Transportation of Dangerous Goods [31." This standard is mandated by the Transportation of Dangerous Goods (TOG) Regulations [21 of Transport Canada (TC). 1.2 The regulations in 49 CFR 173.303 and CSA 8339 specify that acetylene cylinders shall consist of metal shells filled with a porous material and this material must be charged with a suitable solvent. The cylinders containing the porous material and solvent. and representative samples of cylinders charged with acetylene, shall be tested with satisfactory results in accordance with this pamphlet. 1.3 The regulations also in 49 CFR 173.34 and CSA 8339 specify that acetylene cylinders must be eguipped with pressure relief devices capable of preventing a rupture of the normally charged cylinder when subjected to a fire test conducted in accordance with this pamphlet. 1.4 The tests outlined in 5.1, 5.2, and 5.3 are the tests reguired to prove that the porous material, hereafter called filler, as installed in a completed cylinder with solvent and acetylene, will: (1) adeguately stabilize acetylene by preventing progressive decomposition within the filler when subjected to an internal flash or severe impact; and (2) not diSintegrate or sag when wet with solvent and subjected to normal service (simulated transportation vi brations). These tests fulfill the reguirements of the regulations found in 49 CFR 173.303 and CSA 8339. 1.5 The test outlined in 5.4 fulfills the reguirements of 49 CFR 173.34 and CSA 8339. 2 Scope 2.1 The four tests in 5.1 through 5.4 are required to be conducted when there is a new cylinder design or a signifi cant design change. 2.2 These tests are to be conducted, and the cylinders must pass all four tests, prior to starting quantity production and introduction of a specific cylinder model into service. 2.3 Cylinders to be tested must be selected from a pilot production run of cylinders of a sufficiently large quantity to permit the use of planned production equipment and procedures. Cylinders to be tested will be typical of those produced in an actual production operation. 1 References are indicated by bracketed numbers and are listed in the order of appearance. See Section 6, References PAGE 2 ______ ____. .c.!:~O:.!!M!.!P...!R.!=.:ES~S'_=E"'"D...G!:~A~S~A.!!:s~s"'"O~CI~A.T!....I!.O=c!.!.N !L.!I!.!.NC~._ ______C GA C-12-1994 2.4 All test cylinders are to be complete and of a quality suitable for service, including shell, filler, solvent, valve, core hole packing, pressure relief devices and painting. 2.5 Cylinders used in any of these tests must be scrapped. 3 Information to be recorded 3.1 Cylinder design description The following information must be recorded and placed in a file covering each new cylinder design and each significant design change. Provide sufficient detail to permit cylinders of that model or design to be identified. 3.1.1 A brief general description of the filler, including (a) nature of ingredients, (b) method of inserting filling material into shell, (c) design, (d) porosity range, (e) the actual porosity determined by tests on a completed cylinder, and (f) a list of the manufacturer's maximum clearance limits between the filler and shell for each cylinder size. 3.1.2 Drawings of the cylinder giving full details, including (a) inside diameter, (b) wall thickness, (c) length, (d) manu facturer's rated gas capacity when charged to 250 psig at 70°F (1720 kPa at 21.1°C), (e) interior shell volume in pounds water capacity (maximum and minimum), (f) tare weight of the cylinder (maximum and minimum), (g) weight of solvent to be added (maximum and minimum), (h) core hole size, and, if used (i) core hole packing, material, size and quantity. 3.2 Results of tests A record of the tests must be prepared, dated, and signed by the person responsible for performing the tests and must show the following: 3.2.1 The number of cylinders of each type tested, date of tests, description of tests (including such items as pres sure, drop height, clearance measurements, number of cycles, heat input, proof of ignition, etc.), and results of the tests. 3.2.2 If retesting is required because a model fails any of the tests, the same information must also be recorded for those tests. 4 Acceptable test results 4.1 All cylinders required for each of the four tests must pass. 4.2 If any of the specified sampling of cylinders fail a particular test, that test shall be repeated on an equivalent sampling of cylinders selected from the pilot production run. Table 1 shows the minimum number of cylinders required for the four tests. CGA C-12-1994 _______ -'=C'O-":.;M.:c:P....:R..."E".S;,:"S"-E:=.:O"--"G=;,A:.."S"..:A....:S,:"S""O"'-C";.I:,A:.-'T-'.;..O:I""-N.:.J"...:.;IN""C"'._ ___________P AGE 3 Table 1-Minimum number of cylinders required for tests Test Cylinders Mechanical Strength of Filler 3 Flashback 3 Impact Stability 1 (Largest) Fire 3 4.3 If any of the retest cylinders fail and the cause of failure is found to be a design or manufacturing deficiency, the problem must be corrected. Another pilot production run shall be made, and all four tests shall again be con ducted on the specified number of cylinders. All cylinders must pass. 5 Tests 5.1 Proof of mechanical strength of filler test 5.1.1 This test is to prove that the filler will withstand shipment without developing excessive or harmful settling, sag ging, disintegration, or cracking. 5.1.2 Once a design has been qualified, this test must be successfully performed again if there are significant design changes to the filler or interior shape of the cylinder. 5.1.3 Three completely assembled cylinders of the largest standard production size shall be selected and tested. They shall be charged with solvent to the maximum permitted by the design. 5.1.4 After removal of the core hole packing, the clearance between the top of the filler and the inside top of the cyl inder shell (top clearance) shall be measured in two locations 1800 apart and recorded. A reference mark shall be placed on the spud to indicate the points of measurement. Measurements performed after the test shall be made at the same points. 5.1.5 The cylinder shall be placed upright on an apparatus which is so arranged as to subject the cylinder to succes sive free drops onto a steel or cast iron surface solidly supported by a concrete foundation. 5.1.6 The cylinder shall be subjected to either: 5.1.6.1 Five thousand consecutive free drops of 3 inches (76.2mm); or 5.1.6.2 One hundred thousand consecutive free drops of 1.5 inches (38.1 mm).

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