BS EN ISO 15547-2:2005 pdf – Petroleum, petrochemical and natural gas industries — Plate-type heat exchangers — Part 2: Brazed aluminium plate-fin heat exchangers

BS EN ISO 15547-2:2005 pdf – Petroleum, petrochemical and natural gas industries — Plate-type heat exchangers — Part 2: Brazed aluminium plate-fin heat exchangers.
3 General ? 3.1 The pressure design code shall be specified or agreed by the purchaser. Pressure components shall comply with the pressure design code and the supplemental requirements in this part of ISO 15547. The structural welding code shall be specified or agreed by the purchaser. 3.2 Annex A provides some recommended practices for information. ? 3.3 The vendor shall comply with the applicable local regulations specified by the purchaser. ? 3.4 If specified by the purchaser, or if required by regulations, the vendor shall register each plate-fin heat exchanger. 3.5 Further information on brazed aluminium plate-fin heat exchangers can be found in the ALPEMA standards 1) . 4 Proposal information required 4.1 The vendor shall provide a completed data sheet, including materials of construction. An example of a suitable format is given in Annex C. 4.2 The vendor shall specify operating limitations, e.g. temperature limits. 4.3 The vendor shall include a detailed description of any exception to the specified requirements. 4.4 The first-time use of a plate-fin heat exchanger design, component or material by the vendor for the purchaser’s intended service shall be clearly indicated by the vendor. 4.5 The vendor shall provide recommended strainer requirements for each stream. ? 4.6 If a mercury-tolerant design is specified by the purchaser, the vendor shall provide details of special design, manufacturing techniques and operating procedures.
5 Drawings and other data requirements 5.1 Drawings 5.1.1 The vendor shall furnish general arrangement drawings for each plate-fin heat exchanger for review. The drawings shall include the following information: a) service, item number, project name and location, vendor’s shop order number and purchaser’s order number; b) maximum allowable working pressure, design pressure including vacuum if applicable, test pressure, maximum design temperature, minimum design metal temperature and any restrictions regarding testing or operation of the plate-fin heat exchanger; c) dimensions and location of supports; d) overall plate-fin heat exchanger dimensions; e) type and details of fins used; f) presence and location of any inactive areas; g) mass of the plate-fin heat exchanger, both empty and full of liquid with a specific gravity of 1,0; h) centre of gravity of the plate-fin heat exchanger for empty and operating conditions; i) material specifications for all components; j) allowable forces and moments on connections; k) size, flange rating and facing, location, orientation, and flow identification of all connections; l) applicable design codes. 5.1.2 If controlled torquing of flange bolting is required the vendor shall furnish torquing requirements. 5.1.3 The vendor shall furnish detailed instructions on lifting and handling of the plate-fin exchanger. 5.1.4 The review of general arrangement drawings by the purchaser shall not relieve the vendor of the responsibility of meeting the requirements of the purchase order. 5.1.5 After receipt of the purchaser’s general arrangement drawing review comments, the vendor shall furnish the certified general arrangement drawings and the detail drawings. ? 5.1.6 If specified by the purchaser, the vendor shall furnish copies of applicable welding procedure specifications and weld maps for review or record. ? 5.1.7 If specified by the purchaser, brazing procedures shall be made available for purchaser’s review.
5.2 Final records 5.2.1 The vendor shall furnish the purchaser with a user’s manual which shall contain the following: a) technical description; b) operating instructions (including any start-up or shut-down constraints); c) installation and maintenance instructions (including lifting and handling); d) data sheets and drawings (as-built). 5.2.2 The vendor shall retain, for at least five years, records which confirm compliance of the material and fabrication with the requirements of this part of ISO 15547. 6 Design 6.1 General If the design method is based on proof testing, the vendor shall provide the necessary details to the purchaser for verification of compliance with the pressure design code. 6.2 Design temperature ? The purchaser shall specify a maximum design temperature and a minimum design metal temperature. 6.3 Design pressure The plate-fin heat exchanger design shall not be based on differential pressure. 6.4 Thermal stress ? 6.4.1 In addition to the design operating condition(s), the purchaser shall specify all operating conditions which could impose significant thermal stresses on the plate-fin heat exchanger. This shall consider any alternative operating cases, turn-down operation, upset-operation cases (with particular attention to cases where a stream’s flowing condition might change or cease abruptly), and the process control philosophy being applied to the plate-fin heat exchanger. The purchaser shall specify which streams are subject to cyclic or frequently-repeated temperature fluctuations. 6.4.2 The vendor’s design shall allow for thermally induced stresses, with the following assumptions: a) a local temperature difference of 50 K (90 °F) between any two adjacent streams; b) a local temperature difference of 30 K (54 °F) between any two adjacent streams in two-phase flow, or in transient or cyclic conditions.