Glass-Fiber-Reinforced Thermosetting-Resin Piping Systems

ASME Standards for Nonmetallic Pressure Piping Systems

AN A MERICAN NA TIONAL S T AND ARD

ASME NM.2-2020

(Revision of ASME NM.2-2018)

ASME NM.2-2020

(Revision of ASME NM.2-2018)

Glass-Fiber-Reinforced

Thermosetting-Resin Piping Systems

ASME Standards for Nonmetallic Pressure Piping Systems

AN AMERICAN NATIONAL STANDARD

Date of Issuance: December 31, 2020

The next edition of this Standard is scheduled for publication in 2022. This Standard will become effective 6 months after the Date of Issuance.

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CONTENTS

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Correspondence With the NPPS Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Mandatory Appendices

I Design of Integral Flat-Face Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

1. Calculation of Physical and Mechanical Properties Using the Laminate Analysis Method . 63

2. Stress Intensification Factors, Flexibility Factors, and Pressure Stress Multipliers . . . . . 79

3. Specification for 55-Deg Filament-Wound Glass-Fiber-Reinforced Thermosetting-Resin

   (FRP) Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

4. Inspections and Testing of Reinforcement Materials . . . . . . . . . . . . . . . . . . . . . . . . . . 90

5. Examination and Testing Requirements for Vinyl Ester Resin, Polyester Resin, and Additive Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

   Nonmandatory Appendices

   
   

   A	Pipe Support Calculations and Simplified Stress Analysis for FRP Piping System Design .	107
   B	Alternative Testing Grips and Brackets (Modification to ASTM D2105) . . . . . . . . . . . . .	115
   C	Guidance on Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	117
   Figures
   2-2.3.1-1	Allowable Stress Envelope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
   2-3.3.1-1	Nomenclature for Smooth Radius Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
   2-3.3.2-1	Nomenclature for Mitered Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
   2-3.4.1-1	Detail for Fabricated Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
   2-3.4.3-1	Detail for Integrally Molded Tees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
   2-3.5.1-1	Knuckle Reinforcement for Torispherical Closures . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
   5-2.5.2-1	Adhesive Joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
   5-2.5.3-1	Wrapped Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
   5-3.1.2.1-1	Assembly Tolerances and Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	44
   5-3.1.2.4-1	Flange Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	45
   I-2.3-1	Typical Flange Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
   I-3.3-1	Design of Flat-Face Integral Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	57
   I-3.3-2	Values of V (Integral Flange Factor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	58
   I-3.3-3	Values of F (Integral Flange Factor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	58
   I-3.3-4	Values of f (Hub Stress Correction Factor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	59
   I-3.3-5	Values of T, U, Y, and Z (Terms Involving K) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	60
   II-2-1	Coordinate System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	63
   II-4-1	In Place Force Resultants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	71
   II-4-2	Moment Resultants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	72
   II-4-3	Notations for Ply Positions and Laminate Stacking Sequence . . . . . . . . . . . . . . . . . . . .	73
   A-5-1	Example Problem Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	114
   B-1-1	Alternative Testing Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	116
   Tables 2-2.3.6-1	Component Sizes Qualified by Proof-of-Design Testing . . . . . . . . . . . . . . . . . . . . . . . . .	11
   3-2.1-1	Listed Constituent Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	31
   3-3.1-1	Temperature Limits for Acceptable Polymeric Materials . . . . . . . . . . . . . . . . . . . . . . . .	32
   4-1.1-1	Component Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	34
   4-1.1-2	Test Methods and Other Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
   4-1.1-3	Procurement Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
   4-3.2-1	Visual Inspection Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
   6-2.2.2-1	Acceptance Criteria for Bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	48
   I-3.3-1	Flange Factors in Formula Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	61
   A-3.1-1	Guidance to Span Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	109

   
   

   Forms V-2.2-1	Veil and Mat Reinforcement Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	96
   V-3.2-1	Roving Reinforcement Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	97
   V-4.2-1	Fabric Reinforcement Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	98
   V-5.2-1	Milled Fiber Reinforcement Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	99
   VI-6-1	Resin Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	104
   VI-6-2	Curing Agent Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	105
   VI-7.2-1	Common Additives Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	106

   
   

   FOREWORD

   
   

   In 2011, The American Society of Mechanical Engineers (ASME) established the Committee on Nonmetallic Pressure Piping Systems (NPPS) to develop standards for the construction of nonmetallic pressure piping systems. This Commit- tee’s goal was to specify construction1 requirements for nonmetallic piping and piping products; such requirements were not adequately defined in existing standards.

   Prior to the development of the ASME Standards for Nonmetallic Pressure Piping Systems, nonmetallic pressure piping requirements were contained within several existing standards. The nonmetallic piping requirements of the ASME B31 Code for Pressure Piping varied across Sections, with some Sections having no requirements for nonmetallic components at all. Other standards and codes, such as ASME RTP-1 and the ASME Boiler and Pressure Vessel Code (BPVC), Section X, included requirements for reinforced thermoset plastic (RTP) corrosion-resistant equipment but not for piping and piping components. ASME BPVC, Section III did have a few Code Cases that addressed requirements for some nonmetallic piping and piping components, including those made from glass-fiber-reinforced thermosetting resin (FRP) and a few thermoplastics, e.g., high-density polyethylene (HDPE) and poly(vinyl chloride) (PVC). However, the scope of these Code Cases was very limited, and in some cases the methodology was nearly 30 years old. The ASME NPPS Standards now serve as a centralized location for NPPS requirements and are developed by committees whose members are experts in this field. The NPPS Committee’s functions are to establish requirements related to pressure integrity for the construction of nonmetallic pressure piping systems, and to interpret these requirements when questions arise regarding their intent. ASME NM.2 provides requirements for construction of FRP piping and piping components. This Standard addresses pipe and piping components that are produced as standard products, and custom products that are designed for a specific application. ASME NM.2-2018 (first edition) was approved by the American National Standards Institute (ANSI) on

   August 13, 2018.

   The 2020 edition includes revisions to Mandatory Appendix II that add example calculations, cautionary notes, and methods to compute classical lamination theory (CTE) of lamina and laminates. Additionally, Nonmandatory Appendix A has been reorganized and revised, and section A-5 has been added. Section A-5 includes a simplified stress analysis of a sample pipeline and illustrates the application of the design approach, equations, and physical properties of NM-2 piping systems. Further, the 2020 edition revises and clarifies figures, definitions, and nomenclature for NM-2 piping systems. Following approval by the ASME NPPS Standards Committee, ASME NM.2-2020 was approved by the American

   National Standards Institute (ANSI) on December 9, 2020.

   
   

   
   

   1 Construction, as used in this Foreword, is an all-inclusive term comprising materials, design, fabrication, erection, examination, inspection, testing, and overpressure protection.

   
   

   ASME NPPS COMMITTEE

   Nonmetallic Pressure Piping Systems

   
   

   (The following is the roster of the Committee at the time of approval of this Standard.)

   
   

   STANDARDS COMMITTEE OFFICERS

   1. Henley, Chair

   2. McGriff, Vice Chair

C. Ramcharran, Secretary

STANDARDS COMMITTEE PERSONNEL

R. Appleby, Consultant

D. Burwell, Dudley Burwell Consulting

B. R. Colley, INEOS Composites

R. Davis, Consultant

J. Eisenman, Maverick Applied Science, Inc.

M. Engelkemier, Cargill

1. Hebb, RPS Composites, Inc.

2. Henley, Kiewitt Engineering Group, Inc.

L. Hutton, Plasticwelding, LLC

D. Keeler, Dow Chemical Co.

W. Lundy, U.S. Coast Guard

D. McGriff, ISCO Industries, Inc.

T. Musto, Sargent & Lundy, LLC

C. Ramcharran, The American Society of Mechanical Engineers

C. W. Rowley, The Wesley Corp.

L. G. Vetter, Sargent & Lundy, LLC

F. Volgstadt, Volgstadt & Associates, Inc.

V. D. Holohan, Contributing Member, U.S. Department of Transporta- tion — Pipeline and Hazardous Materials Safety Administration

SUBCOMMITTEE ON GLASS-FIBER-REINFORCED THERMOSETTING-RESIN PIPING (SC-FRP)

J. Eisenman, Chair, Maverick Applied Science, Inc.

B. Hebb, Vice Chair, RPS Composites, Inc.

A. Carrion, Secretary, The American Society of Mechanical Engineers

M. Beneteau, Owens Corning

J. L. Bustillos, Bustillos & Associates, LLC

B. R. Colley, INEOS Composites

T. W. Cowley, FRP Consulting, LLC

R. Crawford, Consultant

R. Davis, Consultant