B16.9 INTERPRETATIONS INTERPRETATIONS TO ASME B16.9 (These interpretations are not part of ASME B16.9-1993 and are in!"ded for infor#ation on!$.%
INTRO&'TION As a service to persons who use the B16 Standards, the B16 Committee renders interpretations of the requirements upon request. The procedure for requesting an interpretation is described in the following paragraphs. The interpretations include all replies which have been approved b the B16 !ain Committee in response to inquiries concerning interpretation of this Standard. An interpretation applies either to the "dition and Addenda in effect on the date of issuance of the interpretation or the "dition and Addenda stated in the interpretation. Subsequent revisions to this Standard ma supersede the interpretation.
PROE&'RE )OR RE*'ESTIN+ INTERPRETATIONS #n request, the B16 Committee will render an interpretation of an requirement of this Standard. $nterpretations can onl be rendered in response to a written request, which should be addressed to%
Seretar$, B16 Main o##ittee The A#erian Soiet$ of Mehania! Enineers 'nited Enineerin enter 3/ East 0th Street Ne 2or, N2 14410 The request for interpretation should be clear and unambiguous. $t is further recommended that the inquirer submit his request using the following format% (a) Subject . Cite the applicable paragraph number&s' and(or give a concise description of the sub)ect. (b) Question. Question. *hrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietar design or situation. The inquirer ma also include an plans or drawings which are necessar to e+plain the question however, the should not contain proprietar names or information. -equests which are not in this format ma be rewritten in this format prior to being answered, which ma inadvertentl change the original intent of the request. AS!" procedures provide for reconsideration of an interpretation when or if additional information is available which the inquirer believes might affect the interpretation. urther, persons aggrieved b an interpretation ma appeal to the cogni/ant AS!" committee or subcommittee. AS!" does not 0approve,0 0certif,0 0rate,0 or 0endorse0 an item, construction, proprietar device, or activit.
INTERPRETATIONS NO. 1 Rep!ies to Tehnia! In5"iries Iss"ed )ro# an"ar$ 1, 1976 Thro"h Oto8er 31, 199 Interpretation: 1-1 S"8;et: Pararaph 1., Sope &ate Iss"ed: )e8r"ar$ 19, 1976 )i!e: B16-7/-419 uestion% Are straight cone taper and step reducers included in the scope of A2S$ B 16.341357 -epl% 8es. See para. 1.9 of the Standard.
Interpretation: 1- S"8;et: Pararaph 1.3, Sope &ate Iss"ed: Apri! 7, 1970 )i!e: B16-76-44/ uestion% :o fabricated fittings emploing intersection welds fall within the scope of AS!"(A2S$ B16.341367 -epl% 2o. See para. 1.;.
Interpretation: 1-3 S"8;et: Pararaph 1.1, <)ator$-Made< &ate Iss"ed: "ne 14, 1970 )i!e: B16-70-44 uestion &1'%
Interpretation: 1- S"8;et: Inside &ia#eter of )ittins
&ate Iss"ed: )e8r"ar$ 0, 1994 )i!e: B16-77-44 uestion% :oes A2S$ B16.34135 place an minimum dimensional requirements on the inside diameter of fittings at a position other than the welding ends7 -epl% 2o.
Interpretation: 1-/ S"8;et: Pararaph 9, &esin Proof Test &ate Iss"ed: )e8r"ar$ 0, 1994 )i!e: B16-77-443 uestion &1'% :oes para. 3 of AS!"(A2S$ B16.34136 require ou to use the nominal wall thic=ness of the pipe that the test fitting mar=ing identifies when calculating the burst pressure 0*07 -epl &1'% 8es. uestion &9'% $s the actual wall thic=ness of the pipe used in the test required to be greater than the nominal wall thic=ness of the pipe that the fitting mar=ing identifies7 -epl &9'% AS!"(A2S$ B16.34136 does not address the requirements for the wall thic=ness of the pipe used in the test.
Interpretation: 1-6 S"8;et: Ta8!e A1, To!eranes &ate Iss"ed: )e8r"ar$ 0, 1994 )i!e: B16-77-44 uestion% :oes a 2*S ;> buttweld long radius elbow that has an out4of4roundness value of 1> mm &ma)or outside diameter 1? mm and a minor outside diameter of >? mm' meet the dimensional tolerance requirements of AS!"(A2S$ B16.34136, Table A17 -epl% 2o. The #.:. of a 2*S ;9 long radius elbow has a nominal outside diameter at the weld bevel of 1; mm with a @ 5 mm, 4 mm tolerance and an out4of4 roundness tolerance of 19 mm. The minor outside diameter of the fitting is out of tolerance.
Interpretation: 1-0 S"8;et: Ta8!e &i#ensions of /= E!8os &ate Iss"ed: )e8r"ar$ 0, 1994 )i!e: B16-77-446 uestion% :oes AS!"(A2S$ B16.34136 require dimensions on ? elbows that
would permit two &9' to be welded in series and meet the dimensional requirements of the corresponding si/e 3> elbow7 -epl% 2o.
Interpretation: 1-7 S"8;et: Pararaph 9.3./, Proof Tests &ate Iss"ed: )e8r"ar$ 0, 1994 )i!e: B16-77-447 uestion% Are fittings made to AS!"(A2S$ B16.34136, that were designed b successful proof tests which fulfilled the requirements of earlier editions of B16.3, considered as fulfilling the requirements of the 136 edition7 -epl% 8es, provided the test data has been reviewed and meets the B16.34136 requirements.
Interpretation: 1-9 S"8;et: To!eranes in Para!!e!is# &ate Iss"ed: Ma$ 14, 1994 )i!e: B16-94-443 uestion% :o Table 5 and(or Table 1 of AS!"(A2S$ B16.34136 have a tolerance on parallelism between face and bac=face of the lap of a ap Doint Stub "nd7 -epl% 2o.
Interpretation: 1-14 S"8;et: Pararaph 11., &i#ensions &ate Iss"ed: Ma$ 14, 1994 )i!e: B16-94-44 uestion% :o the provisions of para. 11.9, A2S$ B16.34135, prohibit the use of vernier, micrometer, electronic read4out equipment, etc. for the determination of actual dimensions of B16.3 fittings7 -epl% 2o.
Interpretation: 1-11 S"8;et: &esin Proof Test &ate Iss"ed: A""st 7, 1994 )i!e: B16-94-447 uestion% :oes AS!"(A2S$ B16.34136 cover :esign *roof Test requirements for
branch fittings &other than tees or crosses covered in Tables and 6' in which reinforcement considerations must be anal/ed7 -epl% 2o.
Interpretation: 1-1 S"8;et: Pararaph 9..3, &esin Proof Test &ate Iss"ed: "ne 0, 1994 )i!e: B16-94-41 uestion%
Interpretation: 1-13 S"8;et: To!eranes &ate Iss"ed: an"ar$ 3, 1991 )i!e: B16-94-47 uestion &1'% According to AS!"(A2S$ B16.34136, must all inside diameter, outside diameter, and wall thic=ness tolerances &see Tables 1 and A1' be met for each fitting7 -epl &1'% 8es. uestion &9'% $s there an precedence under which the tolerances must be applied7 -epl &9'% 2o. uestion &;'% $n AS!"(A2S$ B16.34136, is there a ma+imum tolerance on wall thic=ness7 -epl &;'% 2o.
Interpretation: 1-1 S"8;et: Taper Borin &ate Iss"ed: an"ar$ 3, 1991 )i!e: B16-94-49 uestion &1'% According to AS!"(A2S$ B16.34136, when a B16.3 fitting dimension is shortened due to taper boring, what tolerances appl7 -epl &1'% Those in Table 1, Tolerances. See also para. 1.;. uestion &9'% According to AS!"(A2S$ B16.94136, when a B16.9 fitting dimension is shortened due to taper boring, what tolerances appl7 -epl &9'% Those in Table 1, Tolerances.
Interpretation: 1-1/ S"8;et: Ta8!e A1, To!eranes &ate Iss"ed: an"ar$ , 1991 )i!e: B16-94-419 uestion% :oes Table A1, AS!"(A2S$ B16.34136, specif tolerances for inside diameter out4of4roundness7 -epl% 2o.
Interpretation: 1-16 S"8;et: !arifiation of >on Radi"s E!8o &ate Iss"ed: an"ar$ /, 1991 )i!e: B16-94-40 uestion% :oes AS!"(A2S$ B16.34136, for 3> long radius elbows, require the openings to be )oined b circular arcs on the e+ternal surfaces7 -epl% 8es, but the circular arcs ma be terminated in tangents. See AS!"(A2S$ B16.34136, Section 5, Surface Contours.
Interpretation: 1-10 S"8;et: Pararaph 9.., Other o#ponents &ate Iss"ed: )e8r"ar$ 19, 1991 )i!e: B16-94-431 uestion% $s the actual wall thic=ness or the pipe material used in the :esign *roof Test Assembl described in AS!"(A2S$ B16.34136 in para. 3.9.9 limited to the nominal wall thic=ness or compatible pipe material that the fitting mar=ing identifies7 -epl% 2o.
Interpretation: 1-17 S"8;et: Proof Testin of )ittins &ate Iss"ed: Septe#8er 19, 1991 )i!e: B16-94-411 uestion% Can successful proof pressure test data of an AS!"(A2S$ B16.34136 fitting such as a tee be applied to qualif a non4similar B16.3 fitting such as an elbow7 -epl% 2o. Test data ma onl be applied to qualif fittings similar to the test fittings as outlined in Section 3.?, AS!"(A2S$ B16.34136.
Interpretation: 1-19 S"8;et: ?a!! Thiness >i#itations for )ittins &ate Iss"ed: Septe#8er 19, 1991 )i!e: B16-91-41 uestion% :oes AS!"(A2S$ B16.34136 have an restrictions on the ma+imum wall thic=ness used for B16.3 fitting construction7 -epl% 2o, provided the ends are prepared to match the customerEs pipe within the tolerances specified in Table 1.
Interpretation: 1-4 S"8;et: Ta8!e 9, Straiht one Taper Red"ers &ate Iss"ed: Apri! , 199 )i!e: B16-91-413 uestion% Are straight cone taper reducers included in the scope of AS!"(A2S$ B16.341367 -epl% 8es, however the welding end preparations described in AS!"(A2S$ B16.3, Section shall be met. The referencing Code ma have additional requirements.
Interpretation: 1-1 S"8;et: Ta8!e 1, To!eranes &ate Iss"ed: "!$ 31, 199 )i!e: B16-9-446 uestion% :o the inside, outside diameters, and minimum wall thic=ness tolerances of B16.34135, Table 1 appl throughout the fitting7 -epl% Table 1 tolerances for the $.:. and #.:. dimensions appl at the ends of the fitting. The wall thic=ness tolerance applies throughout the fitting.
Interpretation: 1- S"8;et: Test Proed"res &ate Iss"ed: A""st 19, 199 )i!e: B16-9-41 uestion%
&act'
material requirements of para. .>.
@B16.9 INTERPRETATIONS op$riht A#erian Soiet$ Of Mehania! Enineers T"e 6"n 19 44:..:47 441
