Change of Design. A design change is any change in the selection of structural materials or dimensional change not attributable to normal manufacturing tolerances. Minor design changes shall be permitted to be qualified through a reduced test program. Changes of design specified in table 6.7 shall require design qualification testing as specified in the table. Table 6.1. - Material design qualification test Relevant paragraph of this annex Steel Aluminium Resins Fibres Plastic liners Tensile properties 6.3.2.2. 6.3.3.4. 6.3.5. 6.3.6. Impact properties 6.3.2.3. Bending properties 6.3.2.4. Weld examination 6.3.2.5. Sulfide stress cracking resistance 6.3.2.6. Sustained load crack resistance 6.3.3.3. Stress corrosion cracking 6.3.3.2. Shear strength 6.3.4.2. Glass transition temperature 6.3.4.3. Softening/Melting temperature 6.3.6. Fracture mechanics*/ 6.7. 6.7. */ Not required if flawed cylinder test approach in paragraph A.7. of Appendix A is used. Table 6.2 - Impact test acceptable values Cylinder diameter D, mm > 140 ≤ 140 Direction of testing transverse longitudinal Width of test piece, mm 3 - 5 > 5 - 7.5 > 7.5 - 10 3 to 5 Test temperature, °C -50 -50 Mean of 3 specimens Impact strength, J/cm² Individual specimen 30 35 40 60 24 28 32 48 Table 6.3 - Minimum actual burst values and stress ratios CNG-1 All-metal CNG-2 Hoop-wrapped CNG-3 Fully-wrapped CNG-4 All-composite Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] All metal 45 Glass 2.75 50 1) 3.65 70 1) 3.65 73 Aramid 2.35 47 3.10 60 1) 3.1 62 Carbon 2.35 47 2.35 47 2.35 47 Hybrid 2) 2) 2) Note 1 - Minimum actual burst pressure. In addition, calculations must be performed in accordance with paragraph 6.5. of this annex to confirm that the minimum stress ratio requirements are also met. Note 2 - Stress ratios and burst pressures shall be calculated in accordance with paragraph 6.5. of this annex. Table 6.4 - Cylinder design qualification tests Test and annex reference Cylinder type CNG-1 CNG-2 CNG-3 CNG-4 A.12 Burst A.13 Ambient temp/cycle A.14 Acid environment test A.15 Bonfire A.16 Penetration A.17 Flaw tolerance A.18 High temp. creep A.19 Stress rupture A.20 Drop test A.21 Permeation A.24 PRD performance A.25 Boss torque test A.27 Natural gas cycling A.6 LBB assesment A.7 Extreme temperature/cycle X * X * X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X = required * = Not required for cylinders...
Change of Design. A design change is any change in the selection of structural materials or dimensional change not attributable to normal manufacturing tolerances. Minor design changes shall be permitted to be qualified through a reduced test program. Changes of design specified in table 6.7 shall require design qualification testing as specified in the table. Table 6.1. - Material design qualification test Relevant paragraph of this annex Steel Aluminium Resins Fibers Plastic liners Tensile properties 6.3.2.2. 6.3.3.4. 6.3.5. 6.3.6. Impact properties 6.3.2.3. Bending properties 6.3.2.4. Weld examination 6.3.2.5. Sulfide stress cracking resistance 6.3.2.6. Relevant paragraph of this annex Steel Aluminium Resins Fibers Plastic liners Sustained load crack resistance 6.3.3.3. Stress corrosion cracking 6.3.3.2. Shear strength 6.3.4.2. Glass transition temperature 6.3.4.3. Softening/Melting temperature 6.3.6. Fracture mechanics*/ 6.7. 6.7. */ Not required if flawed cylinder test approach in paragraph A.7. of Appendix A is used. 66 Table 6.2 - Impact test acceptable values Cylinder diameter D, mm > 140 140 Direction of testing transverse longitudinal Width of test piece, mm 3 - 5 > 5 - 7.5 > 7.5 - 10 3 to 5 Test temperature, C -50 -50 Mean of 3 specimens 30 35 40 60 Impact strength, J/cm² Individual specimen 24 28 32 48 Table 6.3 - Minimum actual burst values and stress ratios CNG-1 All-metal CNG-2 Hoop-wrapped CNG-3 Fully-wrapped CNG-4 All-composite Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] Stress ratio [MPa] Burst pressure [MPa] All metal 45 Glass 2.75 50 1) 3.65 70 1) 3.65 73 Aramid 2.35 47 3.10 60 1) 3.1 62 Carbon 2.35 47 2.35 47 2.35 47 Hybrid 2) 2) 2) Note 1 - Minimum actual burst pressure. In addition, calculations must be performed in accordance with paragraph 6.5. of this annex to confirm that the minimum stress ratio requirements are also met. Note 2 - Stress ratios and burst pressures shall be calculated in accordance with paragraph 6.5. of this annex. Table 6.4 - Cylinder design qualification tests Test and annex reference Cylinder type CNG-1 CNG-2 CNG-3 CNG-4 A.12 Burst A.13 Ambient temp/cycle A.14 Acid environment test A.15 Bonfire A.16 Penetration A.17 Flaw tolerance A.18 High temp. creep A.19 Stress rupture A.20 Drop test A.21 Permeation A.24 PRD performance A.25 Boss torque test A.27 Natural gas cycling A.6 LBB assessment A.7 Extreme temperature/cycle X * X * X X X X X X X X X X X X X X X X X X X X X X...
Change of Design. FRO expressly reserves the right to change or modify the design and construction of any of its equipment without obligation to notify AOL as long as the functionality of such changes and/or modifications meet or exceed the functionality of FRO’s published specifications.
Change of Design. PIONEER shall be entitled to make any and all changes in details of design, construction or arrangement of the product as PIONEER in its sole discretion determines will constitute an improvement upon the product or any specifications or designs previously furnished to the Purchaser.
Change of Design. LION may change the design or specifications of any of the LION Products at any time without notice and without obligation to make the same or any similar change upon any products previously purchased by or shipped to DEALER.
Change of Design. Company reserves the right to change the design of Company Products or parts thereof at any time without notice to the Distributor. Company may, but shall not be obligated to, make similar changes on any Company Products or parts previously shipped to Distributor or to install or furnish any other different parts than were contained therein when shipment was made.
Change of Design. 5.2.1 Manufacturer may, at any time and without liability to Distributor, improve, modify or discontinue any Product or feature of any Product. Manufacturer will not be obliged to make any change or upgrade in any Product shipped to Distributor prior to the official introduction of any change to the same. Manufacturer may, without liability to Distribute, fill any order placed by Distributor for any given Product by substituting therefore a modified or changed version of the same, so long as there is no significant loss of performance and/or functionality by reason of the substitution.
Change of Design. Changed Item Required Tests Metallic container or liner material - Initial burst, Initial pressure cycle life - Sequential hydraulic tests - Fire test Plastic liner material - Initial pressure cycle life - Sequential hydraulic tests - Sequential pneumatic tests - Fire test Fiber material 1 - Initial burst, Initial pressure cycle life - Sequential hydraulic tests - Fire test Resin material - Initial burst, Initial pressure cycle life - Sequential hydraulic tests - Fire test Diameter 2 ≤20% - Initial burst, Initial pressure cycle life >20% - Initial burst, Initial pressure cycle life - Sequential hydraulic tests - Fire test Length ≤50% - Initial burst, Initial pressure cycle life - Fire test 3 >50% - Initial burst, Initial pressure cycle life - Sequential hydraulic tests - Fire test 3 Coating - Sequential hydraulic tests - Fire test 4 Boss 5 Material, geometry, opening size - Initial burst, Initial pressure cycle life Sealing (liner and/or valve interface) - Sequential pneumatic tests Fire protection system - Fire test Valve change 6 - Sequential pneumatic tests - Fire test 7 Notes:
Change of Design. Xxxxxxxx shall be entitled to make any and all changes in details of design, construction or arrangement of the product as Franklin in its sole discretion determines will constitute an improvement upon the product or any specifications or designs previously furnished to the Purchaser.
Change of Design. Seller expressly reserves the right to change or modify the design and construction of any of its goods without obligation to furnish or install such change or modification on goods previously sold and make substitutions and modifications to its goods or services, so long as the changes do not adversely affect the performance of those items.
