Maverick Applied Science The Leader in FRP Engineering g Over 100 years Combined Design Experience Over 180 years Combined Fabrication and Inspection

Transcription

1 Importance of Comprehensive System Design for FRP Piping Presented By: Jeffrey D. Eisenman, P.E. Maverick Applied Science, Inc. Metatron Seminar For FRP Piping Santiago, Chile PH: +1 (941) March 21,

2 Maverick Applied Science The Leader in FRP Engineering g Over 100 years Combined Design Experience Over 180 years Combined Fabrication and Inspection Experience Complete Knowledge of Composite Materials for Corrosive Applications We have the Best Analysis Tools We Learn More Every Day! 2

3 Engineering Capabilities Material and System Specification FRP Equipment Design FRP System Arrangement (CAD) Detailed Engineering ing Pipe Stress Analysis Finite Element Analysis Burial Design Pipe Support and Structural Design 3

4 Application: WESP Exhaust Gas Duct System 4

5 Application: Desalination and Seawater Cooling 5

6 Application: FRP Chemical Process Piping 6

7 Application: Large Diameter Field Fabricated FRP Process Vessels 7

8 Application: Large Diameter FRP Ducts and Chimney Liners 8

9 Where is FRP Used? PROCESS SYSTEMS Corrosive Fluids (Acids and Alkali) Abrasive Applications (Slurry) 150 PSI or less 250 F or less WHY SHOULD WE ANALYZE IT? 9

10 FAILURES ARE EXPENSIVE.. and PREVENTABLE! 10

11 ALL MATERIALS DO NOT BEHAVE THE SAME IN A SYSTEM? HOW ARE THEY DIFFERENT? 11

12 Material Comparison 90,000 80,000 Tensile Strength ,000 60, PSI 50,000 40, ,000 20, , HDPE FW Axial FW Hoop Aluminum CS SS

13 Material Comparison 35 Modulus of Elasticity at 70 F 35 Modulus of Elasticity at 180 F PSI PSI HDPE FW Aluminum CS SS HDPE FW Aluminum CS SS

14 Material Comparison 120 Coefficient of Thermal Expansion at 70 F 120 Coefficient of Thermal Expansion at 180 F μin/(in F F) μin/(in F F) HDPE FW Aluminum CS SS HDPE FW Aluminum CS SS

15 An Example: Equivalent Thermal Expansion PIPE: 55 FW FRP LENGTH: 100 FT AMBIENT TEMP: 70 F OPERATING TEMP: 160 F ΔLFRP =

16 An Example: Equivalent Thermal Expansion PIPE: 55 FW FRP LENGTH: 100 FT AMBIENT TEMP: 70 F DESIGN TEMP: 160 F ΔLFRP = 1.73 For Carbon Steel to produce an equivalent Length, ΔLSTL = ΔLFRP, DESIGN TEMP = 305 F, for Steel 16

17 Analysis Design Approaches CONSTRAINED SYSTEM EXPANSION ABSORBING SYSTEM FLEXIBLE SYSTEM 17

18 Constrained System Arrangement 18

19 Constrained System Arrangement 19

20 Constrained System Arrangement 20

21 Expansion Absorbing System Arrangement 21

22 Flexible System Arrangement 22

23 Flexible System Arrangement 23

24 Design and Analysis Considerations Geometry Material Design Conditions Load Cases 24

25 Design and Analysis Considerations Geometry In line components Support locations SIFs Pipe Support Stiffness Equipment Movements Material Design Conditions Load Cases 25

26 Design and Analysis Considerations Geometry Material Construction (HLU, FW) Physical Properties CTE Design Conditions Load Cases 26

27 Design and Analysis Considerations Geometry Material Design Conditions Fluid (Liquid, id gas, SG) Pressure Temperature Occasional Loads Load Cases 27

28 Design and Analysis Considerations Geometry Material Design Conditions Load Cases DW + Press DW + Press + Temp DW + Pressure + Occ DW + Hydrostatic Press 28

29 System Optimization 29

30 Transition Points can make Stress Concentrations 30

31 The Purpose of the Pipe Supports: Protect the Pipe Assure Proper Restraint Assure System Functionality 31

32 Custom-Designed Supports 32

33 Supports should be evaluated for Stress and Stiffness! 33

34 Support Stress! 34

35 Support Stiffness? 35

36 Inspection In-process Shop Quality Control On site Quality Assurance 36

37 In Process Quality Control Qualify Fabrication Shops Review QC System and Manual In-shop inspections Shop Surveillance Material Testing 37

38 On-Site Quality Assurance Compliance with Project Documents Construction Verification Bonder Qualification Joining Witness Field Testing 38

39 Keys for Success #1: Understanding the Product Material Behavior Fabrication and Joining i Methods System Arrangement Comprehensive Analysis 39

40 Keys for Success #2: Communication Support Loads Outer Diameters Fabrication Tolerances 40

41 Keys for Success #3: Comprehensive Plan Owner Specifications Detailed Engineering Select Quality Manufacturers In process Quality Control during Fabrication On-site Quality Assurance during Installation 41

42 Thank You Jeff Eisenman, P.E. Maverick Applied Science, Inc. PH: +1(941)