Nonmetallic Materials

Part 3 — Properties

ASME Standards for Nonmetallic Pressure Piping Systems

AN A MERICAN NA TIONAL S T AND ARD

ASME NM.3.3-2020

(Revision of ASME NM.3.3-2018)

ASME NM.3.3-2020

(Revision of ASME NM.3.3-2018)

Nonmetallic Materials

Part 3 — Properties

ASME Standards for Nonmetallic Pressure Piping Systems

AN AMERICAN NATIONAL STANDARD

Two Park Avenue • New York, NY • 10016 USA

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.

ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Periodically certain actions of the ASME NPPS Committee may be published as Cases. Cases and interpretations are published on the ASME website under the Committee Pages at https://cstools.asme.org/ as they are issued.

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The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990

Copyright © 2020 by

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

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CONTENTS

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Correspondence With the NPPS Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Mandatory Appendices

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.3.3 contains stress tables and physical properties tables for thermoplastic materials as well as data sheets for six reinforced thermoset plastic material constructions. The first edition, ASME NM.3.3-2018, was approved by the

American National Standards Institute (ANSI) on August 16, 2018. ASME NM.3.3-2020 was approved by ANSI on October 29, 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, Kiewit Engineering Group, Inc.

L. Hutton, Plasticwelding, LLC

D. L. Keeler, Dow Chemical Co.

W. Lundy, U.S. Coast Guard

D. McGriff, ISCO Industries, Inc.

T. Musto, Sargent and Lundy, LLC

C. Ramcharran, The American Society of Mechanical Engineers

C. W. Rowley, The Wesley Corp.

L. Vetter, Sargent and Lundy, LLC

F. Volgstadt, Volgstadt and Associates, Inc.

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

SUBCOMMITTEE ON NONMETALLIC MATERIALS (SC-NM)

C. Davison, Chair, Aquatherm

L. Hutton, Vice Chair, Plasticwelding, LLC

C. O’Brien, Secretary, The American Society of Mechanical Engineers

B. R. Colley, INEOS Composites

R. Davis, Consultant

P. K. Gilbert, NOV Fiberglass Systems

B. Hauger, Bryan Hauger Consulting, Inc.

J. Mason, Mason Materials Development, LLC

T. Musto, Sargent and Lundy, LLC

R. Nadel, Charlotte Pipe and Foundry

1. W. Rowley, The Wesley Corp.

2. Burwell, Contributing Member, Dudley Burwell Consulting

M. Cudahy, Contributing Member, Plastic Pipe and Fittings Association

C. Moore, Contributing Member, NOV Fiberglass Systems

A. Sakr, Contributing Member, Specialist Engineer

SC-NM-2-FRP AND SC-NM-3-NMM SUBGROUP ON MATERIALS

P. K. Gilbert, Chair, NOV Fiberglass Systems

G. A. Van Beek, Vice Chair, Consultant

M. Beneteau, Owens Corning

D. S. Brown, Interplastic Corp.

J. L. Bustillos, Bustillos and Associates, LLC

B. R. Colley, INEOS Composites

L. J. Craigie, Consultant

R. Davis, Consultant

B. L. Hutton, Lubrizol Advanced Materials

J. Ness, AOC, LLC

D. Olson, Daniel Co.

C. W. Rowley, The Wesley Corp.

1. Wachholder, Sargent and Lundy, LLC

2. E. Hunt, Contributing Member, L. E. Hunt and Associates, LLC

SC-THERMO SUBGROUP ON MATERIALS

L. Hutton, Chair, Plasticwelding, LLC

J. Leary, Vice Chair, Widos, LLC

C. Eastman, Kiewit Power Constructors

L. Gill, Ipex USA, LLC

F. Hampton III, Lubrizol Advanced Materials

J. Kalnins, Plastic-Lined Pipe Solutions

R. Nadel, Charlotte Pipe and Foundry

D. Johnson, Alternate, Ipex USA, LLC

D. R. Townley, Alternate, Lubrizol Advanced Materials

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

CORRESPONDENCE WITH THE NPPS COMMITTEE

General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions or a case, and attending Committee meetings. Correspondence should be addressed to:

Secretary, NPPS Standards Committee

The American Society of Mechanical Engineers Two Park Avenue

New York, NY 10016-5990

https://go.asme.org/Inquiry

Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard. Approved revisions will be published periodically.

The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation.

Proposing a Case. Cases may be issued to provide alternative rules when justified, to permit early implementation of an approved revision when the need is urgent, or to provide rules not covered by existing provisions. Cases are effective immediately upon ASME approval and shall be posted on the ASME Committee web page.

Requests for Cases shall provide a Statement of Need and Background Information. The request should identify the Standard and the paragraph, figure, or table number(s), and be written as a Question and Reply in the same format as existing Cases. Requests for Cases should also indicate the applicable edition(s) of the Standard to which the proposed Case applies.

Interpretations. Upon request, the NPPS Standards Committee will render an interpretation of any requirement of the Standard. Interpretations can only be rendered in response to a written request sent to the Secretary of the NPPS Standards Committee.

Requests for interpretation should preferably be submitted through the online Interpretation Submittal Form. The form is accessible at https://go.asme.org/InterpretationRequest. Upon submittal of the form, the Inquirer will receive an automatic e-mail confirming receipt.

If the Inquirer is unable to use the online form, he/she may mail the request to the Secretary of the NPPS Standards Committee at the above address. The request for an interpretation should be clear and unambiguous. It is further rec- ommended that the Inquirer submit his/her request in the following format:

Subject: Cite the applicable paragraph number(s) and the topic of the inquiry in one or two words. Edition: Cite the applicable edition of the Standard for which the interpretation is being requested.

Question: Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation. Please provide a condensed and precise question, composed in such a way that a “yes” or “no” reply is acceptable.

Proposed Reply(ies): Provide a proposed reply(ies) in the form of “Yes” or “No,” with explanation as needed. If entering replies to more than one question, please number the questions and replies.

Background Information: Provide the Committee with any background information that will assist the Committee in understanding the inquiry. The Inquirer may also include any plans or drawings that are necessary to explain the question; however, they should not contain proprietary names or information.

Requests that are not in the format described above may be rewritten in the appropriate format by the Committee prior to being answered, which may inadvertently change the intent of the original request.

Moreover, ASME does not act as a consultant for specific engineering problems or for the general application or understanding of the Standard requirements. If, based on the inquiry information submitted, it is the opinion of the Committee that the Inquirer should seek assistance, the inquiry will be returned with the recommendation that such assistance be obtained.

ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.

Attending Committee Meetings. The NPPS Standards Committee regularly holds meetings and/or telephone confer- ences that are open to the public. Persons wishing to attend any meeting and/or telephone conference should contact the Secretary of the NPPS Standards Committee.

INTRODUCTION

The ASME Standards for Nonmetallic Pressure Piping Systems (NPPS) are as follows:

NM.1 Thermoplastic Piping Systems: This Standard contains requirements for piping and piping components that are produced using thermoplastic resins or compounds. Thermoplastics are a specific group of nonmetallic materials that, for processing purposes, are capable of being repeatedly softened by increase of temperature and hardened by decrease of temperature.

NM.2 Glass-Fiber-Reinforced Thermosetting-Resin Piping Systems: This Standard contains requirements for piping and piping components that are produced using glass-fiber reinforcement embedded in or surrounded by cured thermosetting resin.

NM.3 Nonmetallic Materials: This Standard includes specifications for nonmetallic materials (except wood, nonfibrous glass, and concrete) and, in conformance with the requirements of the individual construction standards, methodologies, design values, limits, and cautions on the use of materials. This Standard is divided into three Parts:

• NM.3.1, Nonmetallic Materials, Part 1 —Thermoplastic Material Specifications: This Part contains thermoplastic material specifications identical to or similar to those published by the American Society for Testing and Materials (ASTM International) and other recognized national or international organizations.

• NM.3.2, Nonmetallic Materials, Part 2 — Reinforced Thermoset Plastic Material Specifications: This Part contains reinforced thermoset plastic material specifications identical to or similar to those published by ASTM and other recognized national or international organizations.

• NM.3.3, Nonmetallic Materials, Part 3 — Properties: This Part provides tables and data sheets for allowable stresses, mechanical properties (e.g., tensile and yield strength), and physical properties (e.g., coefficient of thermal expansion and modulus of elasticity) for nonmetallic materials.

It is the owner’s responsibility to select the piping standard that best applies to the proposed piping installation. Factors to be considered by the owner include limitations of the standard, jurisdictional requirements, and the applicability of other standards. All applicable requirements of the selected standard shall be met. For some installations, more than one standard may apply to different parts of the installation. The owner is also responsible for imposing requirements supplementary to those of the standard if such requirements are necessary to ensure safe piping for the proposed installation.

Certain piping within a facility may be subject to other codes and standards, including but not limited to the following:

ASME B31.1, Power Piping: This code contains requirements for piping typically found in electric power generating stations, industrial and institutional plants, geothermal heating systems, and central and district heating and cooling systems.

ASME B31.3, Process Piping: This code contains requirements for piping typically found in petroleum refineries; onshore and offshore petroleum and natural gas production facilities; chemical, pharmaceutical, textile, paper, ore-processing, semiconductor, and cryogenic plants; food- and beverage-processing facilities; and related processing plants and terminals.

ASME B31.4, Pipeline Transportation Systems for Liquids and Slurries: This code contains requirements for piping transporting products that are predominately liquid between plants and terminals, and within terminals and pumping, regulating, and metering stations.

ASME B31.5, Refrigeration Piping and Heat Transfer Components: This code contains requirements for piping for refrigerants and secondary coolants.

ASME B31.8, Gas Transmission and Distribution Piping Systems: This code contains requirements for piping transporting products that are predominately gas between sources and t