API 526-2002 pdf free download
API 526-2002 pdf free download.Flanged Steel Pressure Relief Valves.
2 Design 2.1 GENERAL Pressure relief valves discussed in this standard shall be designed and manufactured in accordance with the applicable requirements of Section VIII of the ASME Boiler and Pres- sure Vessel Code for pressure relief devices. 2.2 DETERMINATION OF EFFECTIVE ORIFICE AREA The minimum required effective oriÞce area shall be deter- mined in accordance with API RP 520, Part I. 2.3 VALVE SELECTION For valves described in this standard, inlet and outlet ßange sizes and pressure-temperature ratings shall conform to the data in Tables 2 Ð 15 for spring-loaded valves and Tables 16 Ð 29 for pilot-operated valves. Inlet and outlet pressure limits are governed by the ßange pressure/tempera- ture limits or by the manufacturerÕs design limits, whichever is lower.
2 Design 2.1 GENERAL Pressure relief valves discussed in this standard shall be designed and manufactured in accordance with the applicable requirements of Section VIII of the ASME Boiler and Pres- sure Vessel Code for pressure relief devices. 2.2 DETERMINATION OF EFFECTIVE ORIFICE AREA The minimum required effective oriÞce area shall be deter- mined in accordance with API RP 520, Part I. 2.3 VALVE SELECTION For valves described in this standard, inlet and outlet ßange sizes and pressure-temperature ratings shall conform to the data in Tables 2 Ð 15 for spring-loaded valves and Tables 16 Ð 29 for pilot-operated valves. Inlet and outlet pressure limits are governed by the ßange pressure/tempera- ture limits or by the manufacturerÕs design limits, whichever is lower.
4.3 SEAT LEAKAGE TEST All pressure relief valves shall be seat leakage tested in accordance with API Std 527, or as agreed upon by the manu- facturer and the purchaser. 5 Identification and Preparation for Shipment 5.1 IDENTIFICATION Each pressure relief valve shall have a corrosion-resistant nameplate permanently attached to the body or bonnet. This nameplate shall be stamped with the data speciÞed in Appen- dix B. Pilot-operated pressure relief valves shall have an addi- tional nameplate permanently attached to the pilot. The pilot nameplate shall be stamped with the manufacturerÕs name, pilot type, set pressure, and serial number. Each pressure relief valve shall be tagged with the pur- chaserÕs valve number or other identiÞcation as speciÞed on the purchase order. The data may be stamped on the name- plate or on a separate corrosion-resistant tag that is perma- nently attached to the valve. 5.2 PREPARATION FOR SHIPMENT Each pressure relief valve shall be prepared for shipment as follows: a. After test and inspection, all exterior surfaces, except ßange facings, shall be painted as agreed upon by the manu- facturer and the purchaser. Corrosion-resistant materials need not be painted. Flange facings shall be coated with a suitable corrosion inhibitor. b. Threaded openings shall be plugged with suitable protective devices. Temporary plugs should be readily distinguishable from permanent metal plugs.
