API RP 934-E-2010 pdf download.Recommended Practice for Materials and Fabrication of 1 1 / 4 CR- 1 / 2 Mo Steel Pressure Vessels for Service Above 825 °F (440 °C).
2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API Recommended Practice 582, Welding Guidelines for the Chemical, Oil, and Gas Industries API Recommended Practice 934-A, Materials and Fabrication of 2 1 / 4 Cr-1Mo, 2 1 / 4 Cr-1Mo- 1 / 4 V, 3Cr-1Mo, and 3Cr- 1Mo- 1 / 4 V Steel Heavy Wall Pressure Vessels for High Temperature, High Pressure Hydrogen Service API Recommended Practice 934-C, Materials and Fabrication of 1 1 / 4 Cr- 1 / 2 Mo Steel Heavy Wall Pressure Vessels for High Pressure Hydrogen Service Operating at or Below 825 °F (440 °C) API Recommended Practice 934-D, Technical Report on the Materials and Fabrication Issues of 1 1 / 4 Cr- 1 / 2 Mo and 1Cr- 1 / 2 Mo Steel Pressure Vessels API Publication 938-A, An Experimental Study of Causes and Repair of Cracking of 1 1 / 4 Cr- 1 / 2 Mo Steel Equipment ASME Boiler and Pressure Vessel Code 1 , Section II—Materials; Part A—Ferrous Material Specifications; Part C, Specification for Welding Rods, Electrodes and Filler Metals; Part D—Properties
ASME Boiler and Pressure Vessel Code, Section VIII—Rules for Construction of Pressure Vessels, Division 2- Alternative Rules ASME Boiler and Pressure Vessel Code, Section IX—Welding and Brazing Qualifications ASME SA-20, Specification for General Requirements for Steel Plates for Pressure Vessels ASME SA-182, Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service ASME SA-263, Standard Specification for Corrosion-Resisting Chromium Steel-Clad Plate ASME SA-264, Standard Specification for Stainless Chromium-Nickel Steel-Clad Plate ASME SA-265, Standard Specification for Nickel and Nickel-Base Alloy-Clad Steel Plate ASME SA-335, Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service ASME SA-336, Standard Specification for Alloy Steel Forgings for Pressure and High-Temperature Parts ASME SA-369, Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service ASME SA-387, Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum ASME SA-435, Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates ASME SA-578, Standard Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications ASNT RP SNT-TC-1A 2 , Personnel Qualification and Certification in Nondestructive Testing ASTM G-146 3 , Standard Practice for Evaluation of Disbonding of Bimetallic Stainless Alloy/Steel Plate for Use in High-Pressure, High-Temperature Refinery Hydrogen Service AWS A4.2 4 , Standard Procedures for Calibrating Magnetic Instruments to Measure the Delta Ferrite Content of Austenitic and Duplex Austenitic-Ferritic Stainless Steel Weld Metal
3 Terms, Definitions, and Acronyms 3.1 Terms and Definitions For the purposes of this RP, the following definitions apply: 3.1.1 ASME code ASME Boiler and Pressure Vessel Code, Section VIII, Division 1. 3.1.2 final PWHT The last post-weld heat treatment after fabrication of the vessel and prior to placing the vessel in service. 3.1.3 fine grain practice A steelmaking practice where aluminum or other elements are added to the steel to provide resistance to grain growth during heat treatments. The steps and/or testing to achieve fine grain practice are defined in the ASME specifications for materials (e.g. ASME SA-20, paragraph 8). 3.1.4 hot forming Mechanical forming of vessel components above the final PWHT temperature. 3.1.5 Larson-Miller Parameter (LMP) Formula for evaluating heat treatments: LMP = T × (20 + logt) where T is the temperature in °Kelvin; t is time in hours. 3.1.6 maximum PWHT Specified heat treatment of test specimens used to simulate all fabrication heat treatments including austenitizing, tempering, the final PWHT, a PWHT cycle for possible shop repairs, and a minimum of one extra PWHT for future use by the owner. NOTE To determine the equivalent time at one temperature (within the PWHT range), the Larson-Miller Parameter formula may be used; results to be agreed upon by Purchaser and fabricator. 3.1.7 minimum PWHT Specified heat treatment of test specimens used to simulate the minimum heat treatments (austenitizing, tempering and one PWHT cycle). NOTE To determine the equivalent time at one temperature (within the PWHT range), the Larson-Miller Parameter may be used; results to be agreed upon by Purchaser and fabricator.