asme viii d1 (interpretação vol.25)
TRANSCRIPT
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 1/17
Section VIII-1- nterpretations No. 25 VIlI-1-83-2561,lll-1-89-67,lll-1-89-68
Interpretation: Vlll-1-83-256R
Subject:ection VIII, Division 1, Nonmetallicieworts
Datessued: May 31, 1984
File: BC84-030
Question: Are nonmetallic components attached to the first sealing surface of a vessel as ref-
erenced in U-1 (e)(4) and AG-120(d) outside the scope of Section VIII, Divisions 1 and 2?
Reply: Yes.
Interpretation: VIlI-1-89-67
Subject:ection VIII, Division 1, UW-12nd UG-8l(a)
Datessued:ebruary5,989
File:
Question: The ongitudinal seam of a vessel will be welded from the nside using the GMAW
process. After back-gouging and grinding, the seams welded from the outside using the SAW process,
Is this joint considered to be Type No. 1 joint in accordance with Table UW-121
Reply: Yes,
Interpretation: VIlI-1-89-68
Subject:ection VIII, Division 1, UHA-51
Datessued:ebruary5, 1989
File:
Question (1): May SA-312 welded pipe, conforming to one of the grades given in UHA-Sl(a)
and meetingall requirements of UHA-51, be used at a metal temperature between -20°F and -325°F
without Charpy impact tests?
Reply (1): Yes.
Question (2): May SA-403 WP-W or WP-WX 300 series, welded pipe fittings be used at a metal
temperature between -20°F and -325°F without Charpy mpact tests?
Reply (2): See UHA-51.
37 7
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 2/17
Vlll-1-89-69, Vlll-1-69-70 Section VIII-1- nterpretationsNo. 25
Interpretation: Vlll-1-89-69
Subject:ection Vlll Division 1,CS-85
Datessued:ebruary5,989
File:
Question (1): If plates that have been normalized, and qualified on the basis of test specimens
taken from the plates after normalizing, are subsequently heated to equivalent temperatures above
the lower transformation temperature during ot forming, are additional test specimens representative
of the second thermal cycle required by UCS-851
Reply (1): No, provided all other requirements of UCS-85 are met.
Question (2): If plates supplied n the as-rolled condition with qualification based upon simulated
normalizing of test coupons are heated for forming to a temperature within a reasonable tolerance
of that used to qualify the test coupons, are additional test coupons required?
Reply (2): No, provided all the other requirements of UCS-85 are met.
Interpretation: Vlll-1-89-70
Subject:ection VIII, Division 1, UG-l25(c)
Date Issued:ebruary5, 1989
File:
Question: The 1962 Edition of Section VIII, Division 1, UG-l25(c) states"Al1 unfired pressure
vessels other than unfiredsteam boilers shall be protectedby pressure relief devices thatwill prevent
the pressure rom rising more han 10 per cent above he maximum allowable working pressure,except when theexcess pressure is caused by exposure to fire or other unexpected sources of heat."
The comparable paragraph in the 1986 edition, UC-l25(c)(2), cites the exception to the 10% rule
to be "exposure of a pressure vessel to fire or other unexpected sources of external heat, .,.,,, s the
exception to the 10% maximum pressure rise rule in either the 1962 or 1986 Editions applicable to
a process upset scenario where a pressure increase resultsrom heat causedby an internal exothermic
reaction?
Reply: No.
378
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineerscensed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 3/17
Section VIII-1- nterpretationsNo. 25 Vlll-1-89-71, Vlll-1-89-72, Vlll-1-89-73
Interpretation: Vlll-1-89-71
Subject:ection VIII, Division 1, UG-93
Date Issued: February 15, 1989
File: BC88-459
Question: A pressure vessel was fabricated and ydrostatically ested, but the Data Report Forms
were not signed nor was the nameplate attached. Due to an emergency, the vessel was then used
for 1 day as an atmospheric storage ank, not as a pressure vessel. May the Authorized Inspector
sign he Data Report Form, and he Manufacturer apply he nameplates after he vessel has been
used as described?
Reply: Yes.
Interpretation: VIlI-1-89-72
Subject:ection VIII, Division 1, UG-37
Datessued:ebruary5, 1989
File:
Question:Forahead or shell where he original plates hickness may be reduced rom he
nominal wall thickness to a minimum thickness because of fabrication process, what is the shell wall
thickness that shall be used in determining he area available for reinforcement of an opening in
accordance with the formulas in UG-37.1?
Reply: The minimum specified thickness shall be used in the reinforcement calculations,
Interpretation: Vlll-1-89-73
Subject:ection VIII, Division 1, UF-7
Date Issued:ebruary5, 1989
File:
Question: Is the seal weld at the body/trunnion interface stated in SA-649 paragraphs 1.1 and
4.6 a mandatory requirement for forged steel olls manufactured to the specification andU stamped
in accordance with the requirements of UF-7?
Reply: Yes.
37
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 4/17
Vlll-1-89-74, Vlll-1-89-75, Vlll-1-89-76 Section VIII-1- nterpretations No, 25
Interpretation: Vlil-1-89-74
Subject:ection VIII, Division 1, UG-79nd UCS-79
Datessued:ebruary5,989
File:
Question (1): Heads are being fabricated from materials listed in Section I I by a gradual pressing
and spinning process. Does UC-79(a) require any mechanical testingo be performed o demonstrate
the properties of the material have not been unduly impaired?
Reply (11: No.
Question (2): Is it necessary to heat reat ormed heads abricated rom carbon or low alloy
steels?
Reply (2): See the requirements of UCS-79(d).
Interpretation: VIlI-1-89-75
Subject:ection VIII, Division 1, UG-10
Datessued:ebruary5, 1989
File:
Question: Do the equirements of UG-10 allow a steel service centet/processor to recertify
material to a permitted specification without furnishing to the customer a copy of the certification
from the material manufacturer (steel mill) containing the chemical analysis performed by the mill?
Reply: No.
Interpretation: Vlll-1-89-76
Subject:ection VIII, Division 1, UCS-66k)
Datessued:ebruary5,989
File:
Question: Closure rings are usedo terminate heating/cooling jacketsn cylindrical vessels. While
these are notANSI 616.5 ferritic steel flanges, they are designed n accordance with the requirementsof this Standard. Are these closure rings exempt from impact heating by UCS-66(c) if they are used
at emperature no colder han -20°F? .
Reply: No.
380
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineerscensed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 5/17
Section VIII-1- nterpretations No. 25 Vlll-1-89-77, Vlll-1-89-78, Vlll-1-89-79
Interpretation: VllI-1-89-77
Subject:ection VIII, Division 1, UG-l16(a)
Date Issued: February 15, 1989
File: BC89-016
Question: If a single working pressure is requiredor desired overa specified working temperature
range, is it pemissible for the nameplate o state the following?
(a) A single “maximum allowable working pressure, PSIG” based on the lessor of a) the
maximum allowable working pressure at he maximum design emperature and b) the maximum
allowable working pressure at the minimum design temperature.
(b) “Working temps F max. and min.” based on the specified working temperature range,
Reply: UG-116 and Fig. UG-118 set forth the requirements for terminology and dual marking
(appropriate abbreviations).
Interpretation: VIlI-1-89-78
Subject:ection Vlll, Division 1, UHT-34
Datessued:ebruary 15, 1989
File:
Question: For pressurevessel with hemisphericalheads,constructed of UHT materials, with
reference to UHT-34 and Fig. UW-13.1 sketches (I)and (n), can the shell plate center ine be on’
either side of head plate center line.
Reply: Yes; see the note to Fig. UW-13.1 sketches (1) and (n).
Interpretation: VIlI-1-89-79
Subject:ection VIII, Division 1, UW-26
Datessued:ebruary5,989
File: BC89-027
Question: Can a Certificate of Authorization holder subcontract welding operations, within the
controls of UW-26, to a welding subcontractor who does not possess a Certificate of Authorization?
Reply: Yes.
381
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 6/17
Vlll-1-89-80, Vlll-1-89-81, Vlll-1-89-82 Section VIII-1- nterpretations No. 25
Interpretation: Vlll-1-89-80
Subject:ection VIII, Division 1,A-350
Date Issued:ebruary5,989
File:
Question: May SA-350 be usedas a tubesheet material n a heat exchanger o be fabricated and
stamped in accordance with the requirements of Section VIII, Division 1 1
Reply: Yes.
Interpretation: Vlll-1-89-81
Subject:ection VIII, Division 1, Form-2
Date Issued:ebruary5, 1989
File:
Question: In accordance with Note No. 47 ofTableW-3, if the completed vessel is to be
registered with the National Board,does the U-2 (or U-2A) Partial Data Report Form require he
Authorized Inspector’s National Board Commission number?
Reply: Yes.
Interpretation: Vlll-1-89-82
Subject:ection VIII, Division 1, UG-19
Datessued:ebruary5,989
File:
Question: For Section VIII, Division 1 construction and certification, if nonmetallic, nonCode
tubes are used in heat exchangers of the fixed tubesheet, floating head or U-tube types, whereby
the operating pressure on the tube side is greater than the operating pressure, fluid and mix effects
on the shell side, but the shell and associated pressure relief devices are designed to withstand the
highest design pressure associated with the tube side, and the outside pressure boundary parts are
treated as a single chambered vessel making UG-19 inapplicable, may such a single chambered vessel
be stamped as complying with Section VIII, Division l?Reply: Yes.
382
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineerscensed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 7/17
Section VIII-1 - nterpretations No. 25 Vlll-1-89-83, Vlll-1-89-84, Vlll-1-89-85
Interpretation: Vlll-1-89-83
Subject:ection VIII, Division 1, UC-40
Datessued: March 23, 1989
File:
Question: A pressure vessel with an inside shell diameter of 42 in. has a 28 in. diameter circular
opening into which a nozzle wi ll be nserted. This opening is located such that the imits of rein-
forcement measured parallel to the vessel wall will extend to the dished portion of he head. Do
UG-40(a) and (b) permit the limits of reinforcement to extend to the dished protion of the head?
Reply: Yes.
Interpretation: Vlll-1-89-84
Subject:ectionIII,ivision 1, UG-23
Datessued:March3,989
File:
Question: Do the provisions of UG-23 permit he bending stresses in the vessel wall due to
combination of pressure and earthquake/wind loadings to be ignored?
Reply: No.
Interpretation: Vlll-1-89-85
Subject:ectionIII,ivision 1, UG-l33(d)
Date Issued: April 6, 1989
File:
Question: UG-l33(d) states”Heat exchangers and similar vessels shall be protected with a re-
lieving device of sufficient capacity to avoidoverpressure in case of an internal ailure.”What
constitutes an nternal failure:
(1) tube eakage;
(2) tube cracking;
(3) tube break; or
(4) multiple tube breaks?
Reply:An internal ailure is a condition hat would lead to anoverpressureof hepressure
boundary.
383
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 8/17
Vlll-1-89-86, Vlll-1-89-67, Vlll-1-89-88 Section VIII-1 - nterpretationsNo. 25
Interpretation: VIlI-1-89-86
Subject:ection VIII, Division 1, UG-116
Date Issued: April 6 , 1989
File: BC89-046
Question: The marking required by UG-116 for a pressure vessel is to be applied directly to the
vessel in accordance with UG-118, When the vessel is registered with the National Board and the
"NAT'L BD" number is marked first and above all required ASME markings, is it acceptable to omit
the "manufacturer's serial number" [UC-l16(aM5)] from the fourth ine of the required marking?
Reply: No.
Interpretation: Vlll-1-89-87
Subject:Section VIII, Division1 1 986 Edition, 1988 Addenda),UHT-l8(b),Recessed Nozzle
Inserts
Datessued: May 10, 1989
File:
Question: Do recessed nozzles machined from plate material and similar in detail to Fig. UHT-
18.1 sketch (0 need to comply with Note (2) of Fig. UW-13.3?
Reply: No, Note (2) of Fig. UW-13.3 does not apply to this detail of construction; see U-2(g).
Interpretation: VlIl-1-89-88
Subject:Section VIII, Division1986Edition,988Addenda), UW-38
Datessued: May 10, 1989
File:C86-5 19
Question: Does UW-38 prohibit all visible surface porosity in welds?
Reply: The Code has no specific requirements in this regard. The Manufacturer shall establish
workmanship criteria consistent with the material andlor service requirements.
304
American Society of Mechanical Engineers
Services
PYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 9/17
SectionIII-1 - nterpretations No. 25 Vlll-1-89-89,lll-1-89-90
interpretation: VilI-1-89-89
Subject:Section VIII, Division186Edition,988Addenda), UG-l25(e)
Datessued: May 10, 1989
File:
Question (1 : Is a pressure indicating gage as described in UG-l25(e)a mandatory requirement?
Reply (1): No.
Question (2): If a pressure ndicating gage is installed per UG-l25(e), what range should it cover?
Reply (2): The pressure gage should span the set pressure of the relief device and should have
an upper limit between 1.25 imes he set pressure and 2 imes he maximum allowable working
pressure of the vessel.
interpretation: VIlI-1-89-90
Subject:Section VIII, Division11986Edition,1988Addenda),Testingof NDE Personnel
Date Issued: May 10, 1989
File:
Question (11: When a new edition of SNT-TC-1A is referenced by Section VIII, Divisions 1 and
2, must an employer revise his written practice to account for new or revised requirements in the
new edition?
Reply (1): No, These Sections of the Code reference SNT-TC-1A only as a guideleine for estab-
lishing the employer'swritten practice for qualification of NDE personnel; therefore, the manufacturer
should review new editions of SNT-TC-1A to determine whether any revisions effect he written
practice relative to the specific types of examinations being performed.
Question (2): If a written practice for qualification of nondestructive examiners is revised, must
the employer immediately requalify examiners in accordance with the revised practice?
Reply (2): No. Examiners shall be requalified as required by the employer's written practice,
38
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 10/17
vIII-1-89-91, VIII-I-a9-92,IM-I-a9-93 Section VIII-1- nterpretationsNo. 25
Interpretation: Vlll-1-89-91
Subject:ection VIII, Division1986Edition, 1988 Addenda),UG-20(0
Date Issued: May 10, 1989
File:
Question:Does UG-20(f)(l) permit only materialsequal to in. or 1 n.nominal hickness to
beexempt rom mpact esting or does it permitmaterialsequal to or less than X in. or 1 in,,
respectively, to be exempt from impact testing?
Reply: P-No. 1, Gr. Nos. 1 or 2 materials of nominal thickness of '/2 in. or less listed in Curve
A of Fig. UCS-66 and 1 in. or less isted in Curve 6, C, or D of Fig. UCS-66 are exempt from impact
testing, provided the requirements of UC-2OQ are met.
Interpretation: Vlll-1-89-92
Subject:Section VIII, Division 1 (1986 Edition, 1988 Addenda),ube-to-TubesheetWeldsQualification
Date Issued: May 10, 1989
File:
Question (1): Does Section VIII, Division 1 have requirements or he qualification of welding
proceduresautomaticweldingmachines with rotating headsset up specifically to weld ube-to-
tubesheet welds?
Reply (1): No.
Question (2): Do the rules of SectionVIII, Division 1 prohibit the use of eitherSection 111, Division1, NX-4350 or Section VIII, Division 2, Article F-3 to qualify a tube-to-tubesheet welding procedure?
Reply ( 2 ) : No.
Interpretation: VIlI-1-89-93
Subject: . Section VIII, Division1 (1986 Edition, 1988 Addenda),UG-46
Datessued: May 10, 1989
File:
Question:Are nspectionopenings equired,per UG-46 of Section VIII, Division 1, in tanks
equipped with a heavy duty rubber bladder which is intended to prevent water rom coming in
contact with the steel vessel? These tanks are used for expansion in heating systems,
Reply: Yes.
386
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 11/17
Section VIII-1- nterpretations No. 25 Vlll-1-89-94, Vlll-1-89-95
Interpretation: VllI-1-89-94
Subject:Section VIII, Division 1 (1986 Edition, 1988 Addenda), UG-90(~)(2)
Datessued: May IO,1989
File: BC89-081
Question:Are he equirements of UG-90(~)(2) eingsatisfiedwhenanAI nspects multiple
duplicate vessels for 4 hr on the day shift and 4 hr on the evening shift?
Reply: UG-90(~)(2) stablishes that all Code requirements must be satisfied, but does not detail
the method used to assure such compliance. The method must be developed by the manufacturer
and accepted by the Authorized Inspection Agency, the legal jurisdiction, and the ASME designee.
Interpretation: Vlll-1-89-95
Subject:Section Vlll, Division 1 (1986 Edition,988Addenda), UG-8
Datessued:May 10, 1989
File:
Question(11 The owner’s specification for a pressure vessel requiresull radiography. The owner’s
specificationalsoallows he abricator to fabricate he shell by usingseamless or weldedpipe
construction conforming o one of he specifications given n Section I I . The pressure vessel fabricator
elected to make the cylindrical shell from welded pipe without filler metal. The pipe was purchased
by the pressure vessel fabricator, and the whole length of the weld joint was not fully radiographed
by the pipe manufacturer. Is the pressure vessel fabricator required to fully radiograph the pipe?
Reply (1): The Committee cannot offer an interpretation of contractual responsibilities.
Question (2): Under what conditions is a pipe manufacturer or supplier required to furnish a
Partial Data Report in accordance with UG-l20(c)?
Reply (2): See Note 3 to UG-8.
387
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 12/17
Vlll-1-89-96; Vlll-1-89-97 Section VIII-1- nterpretations No. 25
Interpretation: VlIl-1-89-96
Subject:Section VIII, Division1986Edition,988Addenda),UG-1 l(b)
Datessued: May 10, 1989
File:
Question: A head manufacturer is supplied with a flat, circular welded plate by a Manufacturer
holding a valid Certificate of Authorization. This plate is delivered with aPartialDataReport as
required by UG-120k). This plate is then formed by the manufacturer to the required shape. Must
the head manufacturer supply the purchaser with another Partial Data Report covering the forming
operation or may it be supplied in accordance with UG-1 (b) with the Form U-2 or U-2A furnished
by the Manufacturer supplying the welded plate.
Reply: The formed head may be supplied in accordance with U-2(b)(2) with the Form U-2 or
U-2A furnished by the Manufacturer supplying the plate.
Interpretation: VIll-1-89-97
Subject:Section VIII, Division1986Edition,988Addenda),UG-27
Datessued: May 10, 1989
File:
Question: An ERW pipe is butt welded to a 2:l elliptical head forming a single full peneration
joint with a backing strip eft in place or forming a butt joint as specified in Fig. UW-13 sketch (k).
No radiographic examination is conducted on the butt joint, and the pressure vessel will be usedfor
internal pressure without provisions for human occupancy. Is the joint efficiency E in the equations
in UG-27 for:
(a) the circumferential stress equal to 1.00; and(b) the longitudinal stress equal to 0.651
Reply:
(a) No, a quality factor needs to be applied in this case.
(b) Yes.
388
American Society of Mechanical EngineersServices
PYRIGHT American Society of Mechanical Engineerscensed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 13/17
iection VIII-1- nterpretationsNo, 5
Interpretation: VIlI-1-89-98
Subject:ection VIII, Division1986Edition,988Addenda),UC-93
Date Issued: May 10, 1989
File:
Question: Is a Manufacturer required y the Code o provide the Inspectorwith a mill test report
for pipe which is to be used as the jacket or shell of a vessel?
Reply: No.
Interpretation: Vlll-1-89-99
Subject:SectionVIII,Divisions1and21 986 Edition, 1988 Addenda),CodeCase1986-2
Datessued: May 10, 1989
File:
Question: Does Code Case 1986-2 limit the remaining wall thickness of a vessel to a thickness
which satisfies the requirements of UC-34(c)(2) and AD-702(a)(2) but not less than 0.25 in.?
Reply: Yes.
Note: This Interpretation also appears in Section VIII, Division 2 as Vlll-2-89-06.
Interpretation: Vlll-1-89-100
Subject:ection VIII, Division1986Edition,988Addenda),UC-20(f)
Date Issued:' May 10, 1989
File:
Question: If a vessel satisfies all the requirements of UG-20(0, may the vessel be stamped with
a minimum design temperature of -20°F?
Reply: Yes.
389
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 14/17
V111-1-89-101,lll-1-89-102 Section VIII-I - nterpretationsNo. 25
Interpretation: VIII-1-89-101
Subject:Section VIII, Division 1 (1986 Edition, 1988 Addenda), UG-l16(e)(4)
Datessued: May 10, 1989
File:
Question (1): A two-piece, 2:l ellipsoidal head is fabricated as a PART and fully radiographed
to the requirements of UW-51. Is the Manufacturer's nameplate marked "RT-1" or "RT-4"?
Reply (1): The part should be marked "RT-4."
Question (2): A shell and ube heat exchanger is fabricated to the rules of this Division. The
shellside is radiographed to the equirementsofUW-51.The ubeside is radiographed to the
requirements of UW-52. Is the Manufacturer's nameplate marked "RT-4" or shell side "RT-I," tube
side "RT-3"?
Reply (2): The vessel should be marked: shell side, "RT-1," tube side "RT-3"?
Interpretation: Vlll-1-89-102
Subject:Section VIII, Division 1 (1986Edition, 1988 Addenda),BuriedPressureVessels
Date Issued: May 10, 1989
File:C89-117 .
Question: Mounded storages a system n which cylindrical pressure vessels are aid in a prepared
bed or oundation, and an earth or sand mound is raised around and above he vessels. May the
pressurevesselsused in suchasystembemanufacturedandstamped in accordance with the
requirements of Section VIII, Division 1 or 2?
Reply: Yes; however, see footnote 1 to U-1 in Division 1 and footnote 1 to AG-100 in Division
2 ,
390
American Society of Mechanical Engineers
Services
PYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 15/17
Section VIII-1- nterpretationsNo. 25 Vlll-1-89-103, Vlll-1-89-104
Interpretation: Vlll-1-89-103
Subject:Section VIII, Division1986Edition, 988Addenda),SoftSolderedoints
Date Issued: May 10, 1989
File: BC89-125
Question (1): May soft solder be used to attach extended heat transfer surfaces to the internal
parts of pressure vessels o be fabricated and stampedn accordance with the requirements of Section
VIII, Division l?
Reply (1): The Code does not address the use of soft solder.
Question (2): Are there any service temperature restrictionsor the soft soldered joints described
in Question (l )?
Reply (2): The Code does not address the use of soft solder.
Question (3): May soft solder be used for the joining of pressure parts?
Reply (3): No.
Interpretation: VIlI-1-89-104
Subject:ection VIII, Division1986Edition,988Addenda),UW-11
Date Issued: May 10, 1989
File:
Question: May electric resistance welded (ERW) pipe be used as nozzles in a pressure vesselwhose ongitudinal seam is fully radiographed with no radiography on the ongitudinal seam of the
nozzles?
Reply: Yes, provided the reduced allowable stress for the ERW pipe i s used in the calculations
for theozzle,ndherereoerviceestrictionser UW-2. f
39 1
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineerscensed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 16/17
VIII-1-89-105,IlI-1-89-106,lll-1-89-107 Section V111-1- nterpretationsNo. 25
Interpretation: Vlll-1-89-105
Subject:Section VIII, Division1986Edition,988Addenda), UG-84
Date Issued: May 10, 1989
File: BC89-158
Question: Do the rules of UCS-66(a) of Section VIII, Division 1 require that the nonwelded end
plates of a plate and frame heat exchanger be Charpy impact tested per UG-84?
Reply: No.
interpretation: VIII-1-89-106
Subject:Section VIII, Division 1 (1986Edition,988Addenda),Appendix9
Datessued:une6,989
File:
Question: Is the material thickness requirement of 194b) applicable to carbon steel piping and
tubing material used for heat transfer and water or steam circulationithin the jacket when attached
by welding?
Reply: No.
Interpretation: Vlll-1-89-107
Subject:Section VIII, Division11986Edition, 1988 Addenda), Appendix 24,24-2(e)
Date Issued: June 26, 1989
File:
Question: Appendix 24, 24-2(e) states the minimum diameter for bolts and studs shall be X in.
On small clamped connections, a n. diameter bolt appears to be oversized and creates mechanical
interference problems. Can a bolt smaller than X in. be used if calculations and/or testing proves a
smaller bolt is acceptable?
Reply: No.
392
American Society of Mechanical EngineersPYRIGHT American Society of Mechanical Engineers
censed by Information Handling Services
7/28/2019 ASME VIII D1 (Interpretação Vol.25)
http://slidepdf.com/reader/full/asme-viii-d1-interpretacao-vol25 17/17
Section ViIi-1- nterpretationsNo. 25 Vlll-1-89-108
Interpretation: Vlll-1-89-108
Subject:ection VIII, Division 1 (1986dition,988ddenda), UG-32
Datessued:une 26, 1989
File:
Question: May a ormed head with excess thinning be provided with a pad over he area of
interest to meet the required minimum thickness provided the following conditions are met?
(1) a butt or fillet weld procedure qualified n accordance with Section IX is in use;
(2) a telltale hole is provided on the pad; and
(31 the welding is performed by the vessel manufacturer.
Reply: No.