Common use of Design Requirements Clause in Contracts

Design Requirements. 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-auto- frettage pressure shall must fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall must fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 80 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres fibers shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour behavior of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall must fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 8.2.1. Metal liner 72 The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres fibers shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour behavior of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall must fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.

Design Requirements. 8.2.1. Metal liner The metal liner shall have a minimum actual burst pressure of 26 MPa. 8.2.2. Composite over-wrap The tensile stress in the fibres fibresfibers shall meet the requirements of paragraph 6.5. above. 8.2.3. Stress analysis The stresses in the composite and in the liner after prestress shall be calculated. The pressures used for these calculations shall be zero, 2 MPa, 20 MPa test pressure and design burst pressure. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non- non-linear material behaviour behaviourbehavior of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner. For designs using auto-frettage to provide prestress, the limits within which the auto-frettage pressure shall must fall shall be calculated. For designs using controlled tension winding to provide prestress, the temperature at which it is performed, the tension required in each layer of composite and the consequent prestress in the liner shall be calculated.