_RP_14E-1991_2019_scan.pdf

Recommended Practice for Design and Installation of Offshore Production Platform Piping SystemsAPI RECOMMENDED PRACTICE 14E FIFTH EDITION,OCTOBER 1991REAFFIRMED,SEPTEMBER 2019energliill AMERICAN PETROLEUM INSTITUTE Issued by AMERICAN PETROLEUM INSTITUTE Production Department FOR INFORMATION CONCERNING TECHNICAL CONTENTS OF THIS PUBLICATION CONTACT THE API PRODUCTION DEPARTMENT,1201 MAIN STREET,SUITE 2535,DALLAS,TX 75202-3994-(214)748-3841.SEE BACK COVER FOR INFORMATION CONCERNING HOW TO OBTAIN ADDITIONAL COPIES OF THIS PUBLICATION.Users of this publication should become completely familiar with its scope and content.This publication is intended to supplement rather than replace individual engineering judgment.OFFICIAL PUBLICATION REG.U.S.PATENT OFFICE Copyright o 1991 American Petroleum Institute 2 American Petroleum Inatitut.e API RECOMMENDED PRACTICE FOR DESIGN AND INSTALLATION OF OFFSHORE PRODUCTION PLATFORM PIPING SYSTEMS TABLE OF CONTENTS POLICY _ _ Page 6 7 7 8 FOREWORD-DEFINmONS _ _ SYMBOLS SECTION 1-GENERAi,s Scope _ 9 Code for Pressure Piping_._ 9 Policy _ 9 Industry Codes,Guides and Standards_ 9 American-Iron and Steel Institute,_ 9 American National Standards Institute _ 9 American Petroleum Institute _ 10 American Society for Testing and Material.0-_ 10 American Society of Mechanical Engineers,_ 10 National Association of Corrosion Engineers,_ 10 National Fire Protection Association _ 10 Gas Processors Suppliers Association._ 10 Hydraulics Institu-10 Governmental:Qules and Regulations,_ 10 Demarcation Between Systems with Different Pressure Ratings_ 11 Corrosion Considerations_ _ _ 13 General _ 13 Weight Loss Corrosion _-_ 13 Sulfide Stress Cracking _ 13 Chloride Stress Crackin _ 13 Application of NACE MR-01-75 _ 13 SECTION 2-PIPTNG DESIGN _ 14 Pipe Grades 14 Non-Corrosive Hydrocarbon Service 14 Corrosive Hydrocarbon Service 14 Sulfide Stress Cracking Servic 14 Utilities Service 14 Tubing 14 Sizing Criteria-Gener 14 Sizing Criteria for Liquid Line 15 General 15 Pump-Piping 15 Sizing Criteria for Single-Phase Gas Lines 21 General Pressure Drop Equation 21 Emirical Pressure Drop 21 Gas Velocity Equation 22 Compressor Piping 23 General Notes 23 Sizing Criteria for Gas/Liquid Two-Phase Lines 23 Erosional Velocity 23 Minimum Velocity 23 Pressure Drop 23 Pipe Wall Thicknesse 25 Joint Connections 25 Expansion and Flexibility 25 Start-Up Provisions 25 References _ 26 V-t RP HE:Offshore Production Platform Piping Syst.ems TABLE OF CONTENTS(Continued)Page SECTION 3-SELECTION OF VALVES,_ 29 General 29 Types of Valves.29 Ball Valves_-29 Gate Valves_ 29 Plug Valves 29 _ Butterfly Valves 29 Globe Valves 29 Diaphragm(Bladder)Valves 29 Needle Valves 30 Check Valve 30 Valve Sizing_ 30 Valve Pressure and Temperature Ratings _ 30 Valve Materials 31 Non-Corrosive Service-31 Corrosive Service_-31Chloride Stress Cracking Service 31Sulfide Stress Cracking Service 31References 31SECTION 4-FITTINGS AND FLANGES _ 32 General 32 Welded Fittings 32 Screwed Fittings 32 Branch Connections 32 Flanges 82 General 32 Gaskets 33 Flange Protectors 34.Bolts and Nuts 34 Proprietary Connectors 34 Special Requirements for Sulfide Stress Cracking Service 34 Erosion Preventio 34 References 34 SECTION 5-DESIGN CONSIDERATIONS FOR PARTICULAR PIPING SYSTEMS._ 35 General 35 Wellhead Accessory Items 35 Sampling and Injection Connections 35 Chokes 35 Flowline and Flowline Accessories 35 Flowline Pressure Sensor 35 Flowline Orifice Fittin 35 Flowline Heat Exchanger 35 Flowline Check Valve 35 Flowline Support 35 3 4 American Petroleum Institute TABLE OF CONTENTS(Continued)Page SECTION 5(continued)Production Manifolds _ 35 General-35 Manifold Branch Connections 35 Manifold Valve Installation 85 Process Vessel Piping 85.Utility Systems 38 Pneumatic Systems 88 Air Systems._.38 Gas Systems.38 Fire Water Systems 88 Potable Water Systems 38 Sewage Systems 38 Heating Fluid and Glycol Systems.88 Pressure Relief and Disposal Systems.40 General 40 Relief Device Piping 40 Relief(Disposal)System Piping 40 Drain Systems-40 Pressure Drains 41 Gravity Drains 41 Bridge Piping Between Platforms 41 Risers-41 Sampling Valves _._ 41 References 41 SECTION 6-CONSIDERATIONS OF RELATED ITEMS _ 42 General _ 42 Layout 42 Elevations _,_ 42 Piping Supports _ 42 Other Corrosion Considerations-42 Protective Coatings for External Surfaces_._ 42 Types of Platform Piping Coating Systems _ 42 Selection of Platform Piping Coating Systems _ 42 Risers-42 Corrosion Protection for Internal Surfaces _ 42 Process Piping _ 42 Water Piping _ 42 Protective Coatings-42 Compatibility of Materials _ 42 Non-Destructive Erosion and/or Corrosion Surveys 43 Cathodic Protection _ 43 Thermal Insulatio,._ 43 Noise _ 43 Pipe,Valves and Fittings Tables.48 Inspection,Maintenance&Repair-43 RP 14E:Offshore Production Platform Piping Systems 5 TABLE OF CONTENTS(Continued)Page SECTION 7-INSTALLATION AND QUALITY CONTROL.45 General,.-.-.-45 Authorized Inspector-45 Welding.-.Safety Precautions.45 Welding Proc