1、ANSI LC 7-2009American National Standard ForPipe Joint Sealing Compounds And MaterialsCopyright 2009CSA America, Inc.Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring
2、permission for other republication should consult CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.First Edition - 2009The standards set forth herein apply to the first edition of the Standard for Pipe Joint Sealing Compounds and Materials. Following its preparation by the su
3、pervising Technical Advisory Group, it was accepted by the American National Standards Institute (ANSI) and the Interprovincial Gas Advisory Council (IGAC), and subsequently approved.NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.ApprovedJanuary 16, 2009American Na
4、tional Standards Institute, Inc.Standard DeveloperCSA AMERICA INC.8501 East Pleasant Valley RoadCleveland, Ohio 44131Published - February 2009American National Standards InsitituteResponsibility of approving American National Standards rests with theAmerican National Standards Institute, Inc.25 West
5、 43rd Street, Fourth FloorNew York, NY10036The American National Standards Institute (ANSI), Inc. is the nationally recognized coordinator of voluntary standards development in the United States through which voluntary organizations, representing virtually every technical discipline and every facet
6、of trade and commerce, organized labor and consumer interests, establish and improve the some 10,000 national consensus standards currently approved as American National Standards.ANSI provides that the interests of the public may have appropriate participation and representation in standardization
7、activity, and cooperates with departments and agencies of U.S. Federal, state and local governments in achieving compatibility between government codes and standards and the voluntary standards of industry and commerce.ANSI represents the interests of the United States in international nontreaty org
8、anizations such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The Institute maintains close ties with regional organizations such as the Pacific Area Standards Congress (PASC) and the Pan American Standards Commission (COPANT). A
9、s such, ANSI coordinates the activities involved in the U.S. participation in these groups.ANSI approval of standards is intended to verify that the principles of openness and due process have been followed in the approval procedure and that a consensus of those directly and materially affected by t
10、he standards has been achieved. ANSI coordination is intended to assist the voluntary system to ensure that national standards needs are identified and met with a set of standards that are without conflict or unnecessary duplication in their requirements.PrefaceThis publication represents a basic st
11、andard for acceptable performance of pipe joint compounds and materials. It is the result of years of experience in the manufacture, testing, inspection and research on pipe joint compounds and materials designed for use with natural gas and LP gas piping systems. Nothing in this standard is to be c
12、onsidered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of pipe joint compounds and materials, the manufacture and performance of which may exceed the various provisions specified herein. In its preparation, full r
13、ecognition has been given to possibilities of improvement through ingenuity of product design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded to CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131. A
14、 proposal form is provided in the back of this document.Safe and satisfactory operation of pipe joint compounds and materials depends to a great extent upon its proper use, and it should be applied in accordance with the manufacturers installation instructions, and local municipal building codes.Use
15、rs of this American National Standard are advised that the devices/products/activities within its scope may be subject to regulation at the Federal, state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this stand
16、ard, the Federal, state or local regulation should be followed.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute, Inc., require that action be taken to reaffirm, revise or withdraw this standard no lat
17、er than five (5) years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, Inc., 25 West 43rd Street, Fourth Floor, New York, N.Y. 10036, (212) 642-4900.EFFECTIVE DATE:
18、An organization using this standard for product evaluation as a part of its certification program will normally establish the date by which all products certified by that organization should comply with this standard.iiHistory Of The Development Of The Standard For Pipe Joint Compounds and Materials
19、(This History is informative and is not part of the standard.)In 1990, the American Gas Association Laboratories developed AGA Requirement 4-90 for pipe joint compounds and materials, and was used for certification testing of pipe joint compounds and materials by AGA Laboratories, International Appr
20、oval Services and CSA International. In 2007, interest was indicated to develop a nationally recognized standard. CSA International relinquished its requirements to CSA America, Inc., to undertake the effort to develop a national standard. A working group of interested manufacturers was assembled to
21、 develop a standard based on the requirement.In April 2007, CSA America informed the American National Standards Institute (ANSI) that it was undertaking the project of standards development for pipe joint compounds and materials under its Committee Process. As work progressed, CSA America establish
22、ed a Technical Committee on Pipe Joint Compounds to oversee the development of the standard. The project was assigned the designation LC 7.During its December 2007 meeting, the working group recommended to its Technical Committee that the draft Standard for Pipe Joint Compounds and Materials be dist
23、ributed for review and comment.During its March 2008 meeting, the Technical Committee accepted the recommendation of the working group and adopted the draft standard for distribution for review and comment. The draft standard was subsequently distributed for review and comment during May 2008.At its
24、 August 2008 meeting, the Technical Committee considered comments received during the review and comment period and agreed to editorially revise the draft standard. The Technical Committee then adopted the revised draft standard for submittal to ANSI for approval.This, the first edition of the Stand
25、ard for Pipe Joint Compounds and Materials, was approved by the American National Standards Institute on January 16, 2009.The following identifies the designation and year of the standard.ANSI LC 72009iiiPipe Joint Sealing Compound andMaterials Technical CommitteeAmy Sherwin St. Louis Community Coll
26、ege ChairpersonEva Ackerman Rector Seal CompanyEdward Angelone National GridJorge Atiles University of GeorgiaSteve Bachleda LaCo IndustriesDenise Beach NPGAPaul Beach White-RodgersScott Daley NIPSCOMike Deegan Clearwater Gas SystemsJoAnn Emmel Virginia TechWayne Merrifield Hercules Chemical Company
27、Ray Rael William H. Harvey CompanyRichard Schmidt Federal Process CompanyMatt Wilber ConsultantRichard WileyvContentsPagePart I Construction - Sealing Compounds 1.1 Scope .11.2 General Construction 21.3 Marking On Container 2Part II Performance - Sealing Compounds 2.1 Sealing Effectiveness .52.2 Gas
28、 Compatibility (Propane Gas) 52.3 Gas Compatibility (Natural Gas) 62.4 Gas Compatibility (Butane Gas) 62.5 Corrosion 62.6 Electrical Resistance .62.7 Identification .6Part III Construction - Sealing Materials 3.1 Scope .73.2 General Construction 73.3 Marking 8Part IV Performance - Sealing Materials
29、4.1 Sealing Effectiveness .114.2 Gas Compatibility (Propane Gas) 114.3 Gas Compatibility (Natural Gas) 124.4 Gas Compatibility (Butane Gas) 124.5 Electrical Resistance .124.6 Identification .12TablesTable I . 14FiguresFigure 1. Piping Assembly 16Part V Manufacturing And Production Tests 17EXHIBIT A
30、List of Reference Standards 19APPENDIX A Table of Conversion Factors .21APPENDIX B SI (Metric) Symbols231American National Standard For Pipe Joint Sealing CompoundsAnd Materials Part I: Construction - Sealing Compounds1.1 Scope1.1.1Part I and Part II of this standard cover paste, semi-liquid or liqu
31、id type pipe joint sealing compounds which are intended for sealing threaded joints on metal piping having NPT tapered threads.1.1.2A minimum of 3 containers of sealing compound, each not exceeding 16 oz (0.45 kg) in weight, shall be submitted.1.1.3This standard sets forth the minimum capabilities,
32、characteristics and properties which the product must possess at the time of manufacture in order to be considered suitable for use in natural and/or LP-gas piping systems.1.1.4Compounds or materials shall have an operating temperature range of at least 32F to 125F (0C to 51.5C) to be considered sui
33、table for use in indoor piping systems, and at least -40F to 125F (-40C to 51.5C) to be considered suitable for indoor and outdoor use. A manufacturer may specify and be tested to temperatures outside of these ranges.1.1.5Compounds or materials shall have an operating pressure of at least 125 psi (8
34、61.8 kPa). A manufacturer may specify and be tested to higher pressures.1.1.6Room temperature, as specified herein, shall be considered as 73.4F 3.6F (23C 2C).1.1.7Sealing compounds and materials complying with the provisions of this standard shall be considered as having an operating temperature ra
35、nge and maximum operating pressure as specified by the manufacturer.1.1.8If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification.1.1.9All references to psi throughout this standard are to be
36、 considered gage pressures unless otherwise specified.21.2 General Construction1.2.1The following information shall be submitted to the test agency by the manufacturer:a. Chemical composition;b. Viscosity (if applicable);c. Resistance to flammability;d. Material Safety Data Sheet (MSDS);e. Environme
37、ntal application temperature range (minimum and maximum in degrees Fahrenheit);f. Gas type and maximum operating pressure(s);g. Maximum pipe size; andh. Trade name, identification number or other marking that will identify the product.1.2.2The product shall not contain lead or any lead compound, asb
38、estos, or any asbestos compound. Evidence of compliance (such as an MSDS) shall be furnished to the testing agency.1.3 Marking On ContainerComplete instructions shall be clearly and permanently shown on each container and shall include the following:a. Method of application including a statement tha
39、t the sealant be applied to the external (male) threads. Also a note to apply proper torque to the joints.b. Setting time, if applicable, (time to produce a bond).c. Storage temperature range.d. Environmental operating temperature range in degrees Fahrenheit (minimum and maximum).e. Pressure rating
40、and gas type as applicable:“For natural gas and LP-gas (vapor state) up to _ psi.“For natural gas up to _ psi.”“For natural gas up to _ psi or LP-gas in a vapor state.”(Blank to be filled in with applicable pressure rating.)f. The environmental operating temperature range and pressure rating must be
41、 shown in the proximity of the test agencys certification symbol.3g. Identification of metal joints and maximum pipe size for which the product is intended and be shown in the proximity of the test agencys certification symbol.h. Manufacturers name and address. If the product is to be manufactured f
42、or a brand name account, the name and address of the brand name account may be shown instead of the product manufacturer.i. A traceable date code marking shall be provided to indicate date of manufacture. j. A marking to identify this standard as follows:“ANSI LC 7-(year).”k. Test agencys certificat
43、ion symbol in a size not less than 1/4in (6.4 mm).l. Trade name, number or other marking to identify the product.m. If the product is manufactured at more than one location, the container shall identify the location by name or by means of a code made available to the testing agency.If space limitati
44、on prevents display of markings shown under items 1.3a-c,-g,-j and -m, they may be located on the package or a notice placed inside the package in which the product is shipped.5Part II: Performance - Sealing Compounds2.1 Sealing EffectivenessA piping assembly fixture as described in Figure 1, Piping
45、 Assembly, with the sealing compound applied according to the manufacturers instructions shall be used. (Prior to assembly of the piping assembly shown in Figure 1, all piping shall be checked to conform with NPT thread gauge.) The fixture shall be of new steel piping and fittings having tapered NPT
46、 threads conforming to the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1. The joints shall be tightened to the torque values shown in Table I for the respective pipe sizes.Leakage shall not be in excess of 20 cc/hr of air in an ambient temperature above 32F (0C) and 50 cc/hr o
47、f air in an ambient temperature of 32F (0C) or lower corrected to 30 in Hg pressure at 60F (101.3 kPa at 35.5C).Method of TestThis test shall be conducted at the manufacturers specified minimum and maximum operating temperatures. (Allowable tolerance is -5F (-2.8C) on the minimum temperature and +5F
48、 (-2.8C) on the maximum temperature.)The assembly shall be placed in the required ambient temperature for 6 hours. Nitrogen or air shall then be introduced into the assembly until the internal pressure is equal to the maximum operating pressure specified by the manufacturer. This pressure shall be m
49、aintained for one minute after which leakage shall be measured. The pressure shall then be gradually increased to 1.5 times the manufacturers specified maximum operating pressure. This pressure shall be maintained for one minute after which leakage shall again be measured.2.2 Gas Compatibility (Propane Gas)The same assembly satisfactorily tested under 2.1, Sealing Effectiveness, shall be tested with propane.Method of TestThe assembly shall be cooled in an environmental chamber to minus 40F (-40C). Liquid propane shall then be introduced into t
