MSS SP-69-2002 Pipe Hangers and Supports - Selection and Application Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings industry, inc. 127 Park Street, NE Vienna, Virginia 22180 (703) 281-6613Copyright by the Manufacturers Standardization Society Of he Valve And Pilling Industry Ine Sat hug G2 OBSH:14 2008Mss STANDARD PRACTICE, SP-69 his MSS Standard Practice was developed under the consensus of the MSS Technical Committee 403 and the MSS Coordinating Committee. The content of this Standard Practice is the result of the efforts of competent and concerned volunteers to provide an effective, clear, and non-exclusive specification that will benefit the industry as a whole. This MSS Standard Practice is intended as @ basis for ‘common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does not in itself preclude the manufacture, sale, or use of products not conforming to the’ Standard Practice. Mandatory conformance is established only by reference in a code, specification, sales contract, or public law, as applicable. U.S. customary units in this SP arc the standard; the metric units are for reference only. paragraph, The specific detail of the change may be determined by comparing the material flagged with that | Substantive changes in tis 2002 edition are “flagged” by parallel bars as shown on the margin ofthis | in the previous edition. of issue that was applicable to the referenced standard(s) at the date of issue of this MSS SP. (See ANNEX | ‘Unless otherwise specifically noted in this MSS SP, any standard referred to herein is identified by the date | Ay In this Standard Practice all notes, annexes, tables, and figures are construed to be essential to the understanding of the message of the standard, and are considered part of the text unless noted as “supplemental”. All appendices appearing in this document are construed as “supplemental”. “Supplemental” information does not include mandatory requirements, | Non-toleranced Dimensions in this Standard Practice are nominal, and, unless otherwise specified, shall be | considered “for reference only”. Any part of this standard may be quoted. Credit lines should read “Extracted from MSS SP-69, 2002, with permission of the publisher, the Manufacturers Standardization Society.” Reproduction prohibited under copyright convention unless written permission is granted by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Originally Approved July 1966 Copyright ©, 2002 by Manufacrarers Standardization Society orme Valve and Fittings Industry, tne, Printed in US.A. ers Standandration Society OF The righ by the Mem Sal Aug 02 6:15 2008 ee And Pings Instr IneSTANDARD PRACTICE SP-69 righ, by the Mem Sal Aug 02 6:18 2008 rers Standard FOREWORD This standard was developed by u cooperative effort of representatives of the pipe hanger manufacturers, It is based on the best practice current at this time and on the collective experience of the industry. There are three companion standards—MSS SP-58 and MSS SP-89 relate to hanger materials, design, manufacture, fabrication and installation; MSS SP-127 relates to the design, Selection, and application of bracing for piping systems subject to seismic - wind = dynamic loading. In addition, the MSS Hanger Committee has developed guidelines for pipe supports contractual relationships and on hanger terminology as covered in MSS SP-77 and MSS SP-90 respectively. tion Society OF The ee And Pings Instr IneMSS STANDARD PRACTICE, SP-69 ‘TABLE OF CONTENTS: ‘SECTION PAGE 1B ForEWorD. 1. SCOPE... 2. OBJECTIVE 3. CLASSIFICATION OF PIPING SYSTEMS 4. GENERAL REQUIREMENTS 5. MATERIAL REQUIREMENTS 6 2 8 9 DIMENSIONAL REQUIREMENTS ‘SELECTION OF HANGERS AND SUPPORTS FOR PIPE MOVEMENT ATTACHMENTS MADE BY WELDING OR ROLTING |. HANGER AND SUPPORT SPACING 10. PIPE ATTACHMENTS FOR INSULATED LINES 11, MULTIPLE SUPPORTS 12, RISER SUPPORTS . 13, ANCHORS, GUIDES AND RESTRAINTS. 14, FIRE PROTECTION SYSTEMS 15. DUCTILEIRON PIPING ....... 16. CAST IRON SOIL PIPING 17. GLASS PIPING 1, PLASTIC PIPING .. nee 19, FIBERGLASS REINFORCED PIPE (ERP)... 7 TABLE 1, — HANGER AND SUPPORT SELECTIONS 2. — SPRING SUPPORT SELECTION 3. MAXIMUM HORIZONTAL PIPE HANGER AND SUPPORT SPACING 4, RECOMMENDED MINIMUM ROD DIAMETER FOR SINGLE RIGID ROD HANGERS. ‘5. — TYPE 40 PROTECTION SHIELDS FOR INSULATED PIPE AND TUBING . 3 7 8 9 FIGURE 1. TYPE CHART... ANNEX A REFERENCED STANDARDS AND APPLICABLE DATES... ers Standandration Society OF The righ by the Mem Sal Aug 02 O6:5651 2008 ee And Pings Instr Inerigh by the Men Sal Aug 02 06:58:19 20 Mss STANDARD PRACTICE SP-69 PIPE HANGERS AND SUPPORTS — SELECTION AND APPLICATION 1, SCOPE LL This standard presents the recommended prac tice for the selection and application of pipe hangers and supports for all service temperatures. 2. OBJECTIVE 2.1 To serve as u pipe hunger und support specifica tion for selection and application, by being referenced in whole or in part. 22. To serve as a guide to proven industry practice during engineering design and writing of job specifi cations covering the hanging, supporting and con- trolling the movement of piping systems. 23. To provide the erector with information on types of hanger and support components to be used for specific application and installations, where such information is not otherwise provided. 2.4. To serve as a companion document to MSS SP-58 which provides recommendations for material, design and manufucture of standard types of hanger components. 2.5 To serve as a companion document to MSS SP-89 ‘which provides recommendations for fabrication and installation of pipe hangers and supports. 2.6 To serve as a companion document to MSS SP- 127 which provides recommendations for the design, selection, and application of bracing for piping systems subject to seismic — wind - dynamic wading, 3. CLASSIFICATION OF PIPING SYSTEMS For the purpose of pipe hanger and support selection, this document establishes an identification of piping systems according to the operating (service) temperatures of the piping contents as follows: 3.1 Hot Systems cl. 120° F (49° C) 10 450° F (232° C) A-2, 451° F (233° C) to 750" F (399° C) A-3, Over 750° F (399° C) ers Standandration Society OF The ee And Pings Instr Ine 3.2 Ambient Systems B. 60°F (16°C) to 119°F (48°C) 3.3. Cold Systems C1. 33°F (1° C) 10 57 F(15"C) C2, -19° F (-28° C) to 32° F (0° C) C3, -39° F (39° C) 10-20" F (29° ©) C4, -40? F (40? C) and below (Cryogenic Range) GENERAL REQUIREMENTS 4.1. Where applicable, selection and application of pipe hangers and supports may be required to conform to Codes and Standards, suchas: Ha) ASMEB31 Codes for Pressure Piping b) ASME Boiler and Pressure Vessel Codes ©) UL208 Standard for Pipe Hanger Equipment for Fie Protection Service Factory Mutual FM1951/1952/1953 Approval Standard for Pipe Hanger (Components fr Auonutie Sprinkler Systema ©) NFPAIS 4) National and Local Building Codes 2) All Other Applicable Codes 42 The selection of pipe hangers and supports shall be based upon the overall design concept ofthe piping systems and any special requirements which may be called for in the specifications. The support- ing systems shall provide for, and con, the free or intended movement ofthe piping including its move- ‘ment in relation to that of connected equipment 43. A careful study shall be made of the piping lay- ‘out in relation to the surrounding structure and adja cent piping and equipment before selecting the type of support to be used at each hanger point. 4.4 Hangers, supports, anchors and restraints shall be selected 10 withstand all stitic and specified dynamic conditions of loading 10 which the piping and associated equipment may be subjected.righ by the Mem Sal Aug 02 06:58:21 2008 MSS STANDARD PRACTICE SP-69 4.5. When pipe hanger load and movement calcula- tions are required by the design specification, the following must be considered: a) Deadweight loads b) Hydrostatic loads ©) Thermal loads d) Loading due to.expansion joint reaction forces 446 When occasional pipe hanger load calculations are required, they must be clearly defined in the design specification. Types of occasional loads are: a), Safety valve thrust loads b) Seismic loads ©) Wind, snow or ice loads 4) Turbine trip-out loads ©) Water hammer loads 4.7 Allowable stress levels listed in MSS SP-58 shall be used in the design of hanger assemblies with the following exceptions: a) The load capacities for threaded hanger rods shall conform to Table 3 apd Table A3 of MSS SP-58, b) A 20% increase in allowable stress may be permitted for short time overloading conditions during operation. ©) For steels of known physical properties, an increase to 80% of minimum yield strength, at room temperature, during hydrostatic testing, is permissible, For steels of unknown physical pro- erties, an increase Wo 80% of yield strength, as determined by physical test, is permissible, provided that the maximum allowable stress does not exceed 19,000 PSI (131 MPa). @) Loading combination considerations and allow- able stress levels to be applied shall be established by the Piping Design Engineer. 48° Hanger_and support components shall be selected from Table 1 within the system classification. 4.9 Where additional structural framing members are required, they shall be designed for the specific loads they are to support in accordance with the AISC Manual of Steel Construction — Allowable Sess Design, 9* Edition, No increase in allowable stress is permitted for hydrostatic test periods. ers Standandration Society OF The 4.10. Hangers for the suspension of size 2'/; and larger pipe and tubing shall be capable of vertical hanger component adjustment under load. 4.11 Building structure shall be adequate for sup- porting pipe hanger loads as generated in 4.5 and 4.6, including hydrostatic test loads, and shall be the responsibility of the Piping Design Engineer. 4.12 Installed hangers or hanger components shall be used only for their purpose. They shall not be used for rigging and erection purposes. 4.13 Pipes shall not be suspended directly from each other. The individual hanger for each horizontal pipe in a vertical bank shall have the load transmitted directly to the rods, not the pipe above. (Care shall be taken to size the rod appropriately for the total load atthe support point, |. MATERIAL REQUIREMENTS Sul The materials of all pipe hanging and support ing elements shall be in accordance with MSS SP-58. 5.2 The material in contact with the pipe shall be compatible with the piping. material so that neither shall have a deteriorating action on the other. 5.3. Materials subject to corrosion or electrolysis shall be protected as specified by the engineering design and such protection shall be applied in accord- ance with the requirements of MSS SP-58. DIMENSIONAL REQUIREMENTS 6.1. Hangers and supports shall be sized to fit the outside diameter of pipe, tubing, or, if specified, the outside diameter of insulation, Manufacturers! catalog hangers provide @ nominal clearance over standard tolerance piping and tubing. Consideration for fit should be given by the user for large diameter and/or out of tolerance piping and tubing. 62. Dimensional tolerances shall be in accordance with Section 4 of MSS SP-89, SELECTION OF HANGERS AND SUPPORTS FOR PIPE MOVEMENT 7.1 The selection of hangers and supports shall be made to provide the ‘control that its oper: ee And Pings Industry ine