ASME VIII D1 (Interpretação Vol.27)

7/28/2019 ASME VIII D1 (Interpretação Vol.27)

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Interpretation: MII-1-89-167

Subject:Section VIII, Division 1 (1986Edition, 7988Addenda), UW-51 (a)(l)

Date Issued:ebruary 12,1990

- File: BC89-415

Question: UW-51 (a)(l) has been revised to require a Manufacturer to retain radiographs of a

vessel until the Manufacturer's Data Report for a vessel has been signed by the Inspector. Canradiographs for vessels fabricated prior to this revision to SectionVIII, Division 1 be discarded or

must they be retained or 5 ears as previously required?

Reply: The Foreword to th e Code states: "After Code rkvisions are approved by ASME, they

may be used beginning with the date of issuance shown on the Addenda." Therefore, radiographs

for vessels completed prior to the date of issuance for the 1987Addenda must be retained for at

least 5 years.

Interpretation: VIIl-l-89=168

Subject:Section VIII, Division 1 (1986 Edition,1988

Addenda),Geometric Scope

Datessued:ebruary 12,1990

File: BC89-437

Question: Are th e rules for the make-up connections described in U-1 e)(l)(b) ofSection V I I I ,

Division 7 within the Scope of the Code?

Reply: No.

Interpretation: VlII-'1-89-169

Subject:Section VIII, Division 1 (1986 Edition, 1988 Addenda), UCI-101 nd UCD-701

Datessued:February 12, 1990

File: BC90-003

Question: May a Manufacturer ascertain the maximum allowable orking pressure of a vessel

or vessel part made of cast iron or cast ductile iron by performing only a finite element analysis in

lieu of performing Code calculations or a proof test?

Reply: No.

428

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Section VIII-1 - nterpretationsNo. 27 MII-1-89-170, MII-1-89-171, MII-1-89-17

Interpretation: Mil-1-89-170

Subject:Section V I I I , Division 1 (1986 Edition, 1988 Addenda),Appendix 12,12-3(b)

Datessued:ebruary 1 2 , 1 9 9 0

File: - BC90-005

Question: 12-3(b) reads "Other imperfections are unaccep table if the indications exceed the

reference level amplitude..."Does the "reference level amplitude".refer to responses greater than20%of the reference level or 100%DAC reference level?

Reply: In 12-3(b) "reference level amplitude" refers to 100%DAC.


Subject: ection VIII, Division 1 (1986 Edition, 1988 Addenda), UE37


File: BC90-006

Question: In reinforcement calculations is the joint efficiency used in calculating the requiredthickness of th e vessel wall t, and the requ ired thickness of the nozzle wall r," 1 O regardless of thejoint efficiency determined for the vessel wall and nozzle wall from the ru les in UW-12 providedthe nozzle does not pass through a weld?

Reply: Yes.

Interpretation: MII-1-89-1 2

Subject:

Date Issued:

File:

Section VIII, Division 1 (1986 Edition, 1988 Addenda), Fig, UW-13.1

February 1 2 , 1 9 9 0

BC90-009

Question: Is the configuration shown in Fig. UW-13.1 sketch (0 meant to exclude the config-uration shown in Fig. UW-13.1 sketch ( e) for use with intermediate head con structio n?

Reply: Yes,

4





MII-1-89-173,II-1-89-174,II-1-89-175 W o n VIII-1 - Interpretations No. 27


Subject: Section V I I I , D iisio n 1 (1986 Edition, 19 88 Addenda), U G 93

Date issued: February 12, 19 90

File:

Question: In complying with the requirements of U E 9 3 what documentation must the supplierof cast materals supply with SA-278 and SA-395 castings?

Reply: The marking equ irem ents forSA-278must complywith the requirements of UG-93(a)(3),while SA-395 must comply with the requirements of UG-93(a)(2).

Interpretation : MII-1-89-174

Subject:Section VIII, Division 1 (1986 Edition, 1 98 8 Addenda),WeldedAttachments

Datessued:ebruary 12,1990

File:

Question: If the weld around a nonpressure part, either load-bearing or non-load-bearing, beingattached to a pressure part intersects the longitudinal or circumferential weld of a pressure part,must the weld attaching the nonpressure part be interrupted at these intersections?

Reply: No [see UG82(b)l.

Interpretation : VIII-1-89-175

Subject:Section Vill, Division 1 1986 Edition, 19 88 Addenda),Appendix 1, 1 4


.File:

Question: A nozzle is welded to a seamless 2:l ellipsoidal head as shown in Fig. UW-16.1sketch (g). Must this Category D joint be fully radiographed in order that a joint efficiency of E =

1 O can be used in the formulas of 1-4(c)?

Reply: No.

43 0





SectionVIII-1 - nterpretations No. 27 MII-1-89-176, MII-149=177, II.1-89-178

Interpretation: Vlll-1-89-176

Subject:Section Wilt Division 1 (1986 Edition, 1988 Addenda), U-1 (c)(3)

Datessued:ebruary 1 5 , 1 9 9 0

File: BC90-020

Question: Is a pressurized groundwood mechanical grinder wherehe pressure container is partof a cylinder in which a hydraulic piston forces wood against a grinding stone exempt from SectionVIII, Division 1 by U-l(c)(3)?

Reply: Yes; however, see footnote 1 to U-1.

Interpretation: Vlll-1-89-177

Subject: ection VIIi, Division 1 (1986 Edition, 1988 Addenda), UE120(a)


File: BC90-021

Question: May mirror symmetric vessels w hich meethe requirements of UG -l20(a)(2 ) hrough(4), and which are manufactured to th e sam e drawing and completed on the sam e day be regardedas identical and reported on a single Data Report?

Reply: Yes.

Interpretation: WII-1-89-178

Subject:ection VIII, Division 1 (1989 Edition), SA-105

Date issued: March 20,1990

File: BC90-224

Question: May forged SA-105 blind flanges complyingwithANSI 616.5 in pressure Classes150through 600 be utilized as heat exchanger tube sheets for Section V I I I , Division 1 construction pro-vided that both flange and tubes heet calculations are performed to verify that the thickness andbolting meet the requirement of the Code?

Reply: No. (See para. 1. 1 of SA-105 for scope limitation.)

43





Mil-1-89-179, MII-1-89-180,II-1-89-181 Section’VIII-1- nterpretationsNo. 27

Interpretation: VIII-1-89-179

Subject: ection VIII, Division 1 (1989 Edition), UW-33 and UW-42

Datessued:March 0, 19 90

File:

Question: Is it permissible to apply the requirements of UW-42 in Section VIII, Division 1when

fitted butt joints in Categories A, B, C, and D deviate from the required tolerance s given in UW-331

Reply: No.

Interpretation: WI-1-89-180

Subject: ection VIII, Division 1 (1986Edition, 19 88 Addenda), UG 93 (d)( 3)

Date Issued:March 22, 1990

File: BC90-025

Question: May a flat plate used o form a corner joint be ultrasonically examined in accordancewith SA-435 in lieu of the magnetic particleor liquid penetrant examination requiredby UG-93(d)(3)? .

Reply: No.

Interpretation: VIll-1-89-181

Subject:ection VIII, Division 1 (1989 Edition),UG-93

Datessued:March 2, 19 90

File:

Question: Are material test reports in accordance with U E 93 (a )( l) equired for plate used as

reinforcement plates for nozzles in pressure vessels?

Reply: Yes.

43 2





Section VIII-1 - nterpretations No.27 VTII-1-89-182, MI I-1-89 -183 , W 11-1-89-1


. Subject:ection hll,Division 1 (1989 Edition), UG-93(d)(3)

Date Issued: March 22, 1990

File: BC90-236

Question: Does the term "flat plate" in UG-93(d)(3) refer to flat p late as r o l l e d by th e mill?

Reply: Yes.

Interpretation: W11-1-89-183

Subject:ection VIII, Division 1 (1989 Edition), UG-l lS(b)

Datessued:March 22, 1990

File: BC90-239

Question: Is it the intent that theword "certified documents" in 'UG- l lS(b )be applied to PQR's(Procedure Qualification Record), WPQ's (Record of Welder Qualification Test), and CMTR's (Ma-terial Test Report)?

Reply: No.

Interpretation: Wll-1=89-184

Subject:ection VIII, Division 1 (1989 Edition), UC-32(g)

Datessued: April 3, 1990

File: BC90-193

Question: Under the requirements of Section VIII, Division 1, how i s thickness determined fora cone without a knuckle when the half-apex angle is greater than 30 deg.

Reply: See I-S[g) and U-2(g).

4

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VIII-1-89-185,MII-1-89-186 Section V111-1 - nterpretationsNo. 27

Interpretation: MII-1.89-185

Subject:Section VIII, Division 1 (1989 Edition),Appendix 2,2-2(d)(2) and Fig. 2-4 Sketch

(1 1)

Datessued: April 3 , 1 9 9 0

File: BC90-243

Question (1): Is a flat plate flange fabricated with the rolled grain perpendicular to the shellaxis, which is designed per the requirements of Fig. 2-4 sketch (11) of SectionVlll, Division 1, and

welded p e r the requirementsof Fig. UW-13.2 sketch (m) r (n) and inspected per the requirements

. of UG-93, considered a “fabricated hubbed flange” as described in 2-2(d)(2)?

Reply (1): No.

Question (2): If the Reply to Question (1) is “NO,“ hen when performing design calculations

for this lange can the dimension be takenas equal to theillet leg parallelo the ax ’s of th e flange,

and g equal to the other fil let leg plusg when calculating he optional type lange usingan integral

type calculation?

Reply (2):Yes.


Subject:Section VIII, Division1 (198 9 Edition),NominalThicknessRequirements to Comply

. With PWHT Procedures

Datessued: April 3, 1990

Fi e: BC90-305

Question: Inusing the attachment detailof Fig. UW-13.2 sketch (d) in SectionVIII, Division 1,

can the weld joint hickness of a shell to tubesheet attachmentbe considered t!e maximum metalthickness in determining the rate of heating and cooling for postweld heat treatment?

Reply: No. See UW-49(f)(5)(c).

43 4





Section VlII-1 - nterpretations No. 27 . Wll-199-187, Mll-1-89-188,Mll-1-89-18


Subject:Section Vl l l , Division 1 (1989 Edition), Appendix 12 , 12-3(b)

Date Issued: A p r i l 9, 1990

File: BC90-303

Question: Do the acceptancelrejection standards given in 12-3(b)(l),(2), an d (3) of Appendix12 in Section V I I I , Division 1 refer to imperfections which prod uce respo nses above 20% of th ereference level?

Reply: Yes.


Subject:Section V I I I , Divisions 1 and 2 (1986 Edition, 1988 Addenda), UW-29 and AF-270,Mass Testing of Welders

Datessued: April 12 , 1990

File: BC88-426C

Question (11: In accordance with the subject paragraphs, can several contractors or assemblerssimultaneously cond uct the performance qualification test(s1of a welder?

Reply (1): Yes.

Question (2): In accordance with the subject paragraphs, can a welder simultaneously weldperformance qualification tes t coupo ns in accordance with a welding procedure specification ofseveral contractors or assemblers w hen the essential v a r i a b l e s are documented as identical?

Reply(2): Yes.

Note: This interpretation also appears asWll-2-89-12.


Subject: . Section Vl l l , Division 1 (1989 Edition),TableUW-12,BackingRing

Datessued: A p r i l 18, 1990

File:C90-306

Question: Is it permissible under the requirem ents of Section V l I I , Division 1 to have an in -place rolled backing ring with a tight fit in lieu of welding either ed ge?

Reply: Yes.

43





Section W11-I - nterpretations No. 27


Subject:ection VIII, Division 1 (198 9 Edition),ig.UCS-66

Datessued:.May 1,1990

File:

Question: Does Curve B in Fig. UCS-66 of Section V I I I , Division 1 apply to Casting materials?

Reply: Yes.

Interpretation: M11-1-89-191

Subject:Section V I I I , Division 1 (1989 Edition), W-11 a)

Date Issued: May 9, 19 90

File: BC90-350

Question (1): Do Category D butt welds [e.g., Fig. UW-16.1 sketches (f-1) hrough ( f 4 equiref u l l radiographic examination under the requirem ents of UW-11 (a) and W -1 2( a) in Section V I I I ,

Division 1

Reply (1 : Yes.

Question (2 ) :Do Category D corner welds [e.g., Fig. UW-76.1, all excep t ske tches (f-1) hrough(f-4)Jrequire fu l l radiographic .examination under the requirements of UW-ll(a) and UW-l2(a) in

'Section VIII, Division 11

Reply ( 2 ) :No.

Question (3):May E = 1.0 be used in the formed head design formulas in UG-32 if CategoryD com er welds are employed and all requirements of UW-11 (a) and W -1 2( a) are met?

Reply (3):Yes.


Subject: ection VIII, Division 1 (1989Edition), UW-16(0(3)(a)

Datessued: May 9, 1990

File:

Question: Do the requirements of Uw-l6(f)(3)(a) n Section VIII, Division 1 also apply to pipe?

Reply: No.

436




SectionVIII-1 - nterpretations No. 27 MII-149-193,IL149-1 4,MII-1-89-1

Interpretation: MII-1-89=193

Subject:Section W11, Division 1 (1989 Edition), UG116 and UG119

Datessued: May 9,1990

File: BC90-393

Que stion: Is t the intent of the marking provisions in UG-116 of Section VIII, Division 1 toallow for both English and another language to be used when all of the criteria in UG116 and U G

119 are met?

Reply: Yes.


Subject:ection VIII, Division 1 (1989 Edition), UG-15


File: BC90-345

Question : May alloy 317L (UNS 531 703)e used in b a r orm (SA-479), pipe (SA.3121, and tube(SA-249) when the alloy is available under plate(SA-240) and fittings (SA-4031, if all of the requite-ments of UG-15 of Section WII, Division 1 are met?

Reply: Yes.

Interpretation: W11-1-89-195

Subject:ection VIII, Division 1 (1989 Edition), UW-g(d)

Date Issued: May 21,1990

File: BC90-400

Question: Do the requirements of Section VIII, Division 1 se t a limit on the number of longi-tudinal seams permitted’in a single shell or course?

Reply: No.

43





VIII-1-89-196, M11-1-89-197,Mil-1 89-18 Section V111-1 - Interpretations No. 27

interpretation: MII-1-89-196

Subject:ection V I I I , Dihsion 1 (1989 Edition), UE 36 (c)(3 )(a)

Datessued: May 22 ,1990

File:

Question: Are strength calculations required in acco rdan ce with UG-41 for nozzles complyingwith the requirements of UG36(c)(3)(a)?

Reply: Yes, unless exempt by the provisions of U W -I5 (b ).


Subject. Section WII, Division 1 (1989 Edition), UHA-1

Datessued:May 22,1990

File:

Question : Stainless steel materials have been received from suppliers with dual marking anddual certification for 304/304H. Material est reports show that the material meets all the chemicaland mechanical requirementsof Section 11, Part A for th e specific material. May this m aterial be usedin the design and construction of both plain grade and high-carbon grade stainless steel vessels?

Reply: Yes.


Subject:ection VIII, Division 1 (1989 Edition), UG-lO(a)(2)


File: BC90-294

Question: Does UG -lO(a )(2)of Section W11, Division 1 prohibit the recertification of SA-106Grade B material to SA-106 Grade C by a vessel or parts manufacturer?

Reply: No.

438





Section VIII-1 - nterpretations No. 27 MII-1-89-199,MIL1 89.2

Interpretation: Mll-1-89-199

Subject:Section VIII,Division 1 (1989Edition), UG20(f) and U S 6 6

Date Issued: May 22, 1990

File:C90-314

Question (1): May both UG20(0 and UCS-66 of Section VIII, Division 1 be used to establish

impact test requirements for vessels fabricated of two or more carbon steel materials?

Reply (1):Yes.

Question (2): A &on s t e e l vessel i s made up of a 3/4 in. thick shell of curve B material and

has 3 in.thick welded flat covers alsof curve B material. Can UG20(f)be used for the shell material

and UCS-66(a) and (b)be used for the flat avers to establish impact test requirements for th e

vessel?

Reply (2): Yes.


Subject:Section VIII,Division 1 (1989Edition),Appendix 2 , 2 4 and2-13(a)


File: BC90-325

Question: A circular flat closure similar o that shown in Fig. 2-1 3 f Mandatory Appendix 2s

connected to a shell by a welded attachment identical to that shown in Fig. UW-13.2 sketch (dl.

The flange faces arenot raisedand he upper element s a blind flange. The ratio of outside diameter

of the flange to the inside diameter of the flange s equal to a K factor of 1.21. Is this construction-

permissible under he requirements of 2-13(a) in SectionVIII,Division1 or K factors less than 21

Reply: No, Fig. UW-13.2 sketch (d) is for tubesheets without th e bolting lange.





MII-l-89-200R, MII-1-89-2011 MII-1-89-202 Section VII1-1 - nterpretations No. 7

Interpretation: MII-l-89-200R

Subject:Section WII, Division 1 (1989 Edition), Appendix 2, 2 4 and 2-13Ca)


File: BC90-325+

Question: A reverse flange as shown in Fig. 2-13 of Appendix 2 is connected to a shell by awelded attachment identical to that shown in Fig. UW-13.2 sketch (d). The flange faces are notraised and the upper elem ent is a blind flange. The ratio of outside diameter of the flange to theinside diameter of the flange is e q u a l to a K factor of 1,21. Is this con struction permissible underthe requirements of 2-13(a) in Section VIII, Division 1 for K factors less than 2?

Reply: No.


Subject: ection VIII, Division 1 (1989 Edition), able UW-12


File: BC90-326

Question: Is the joint thickness limitation p e r Table UW-12 of Section M11 Division 1 for Type'4 , Category B joints based on the shell thickness?

Reply: Yes.


Subject:Section V I I I , Division 1 (1989 Edition), UG78, UW-40,and UCS-SS(f), Repair ofSteel Castings


File: BC90-388

Question: Are defects repaired by a vessel or part Manufacturer in steel castings ordered t o SA-

352, with Supplementary Requirement 4, subject to the equirements of UC-78, UW-40, and UCS-

56(f) in Section VIII, Division l?

Reply: Yes.

440




Section VIII-1 - nterpretations No. 27 MII-1-89-203, il-1-89-204, Mil-1-89-2

Interpretation: Mll-1-89-203

Subject: Section VM, Division 1 (1989 Edition), U-1(j)


File: BC90-257

Question: In determining th e volume limit for a heat exchanger for exemption from inspectionby an Authorized Inspector per Section VIII, Division 1, U-1 (j), is it required that the tub e sideinternal volume be he summation of the channel heads (or distribution headers) tubes, tu be returnbends, and other miscellaneous pressure parts?

Reply: Yes.

Interpretation: Vlll-1-89-204.

Subject:Section Vlll, Division 1 (1989 Edition), UG-7 7 (a)(2) and UC-44, UseofANSI B16.5

Flanges

Datessued: June 20, 1990

File: BC90-435

Question: In complying with the requirements of UGll a)(2) and UG44 in Section V I I I , Di-vision 1, c a n an ANSI 816.5 flange, using the rated pressure and temperature specified in th eStandard, be used without additional calculations per UG-34 and Appendix 21

Reply: Yes.

Interpretation: Mll-1-89.205

Subject:Section VIII, Divisions 1 and 2 (1989 Edition),Appendix 2, 2-11 and AD-702

Datessued: June 20, 1990

File: BC90-436

Question: Are there any requirements in Section VIII, Divisions 1 and 2 which allow the deter-mination of thickness for blind and reverse flanges under external pressure?

Reply: There are no specific provisions whichaddress the design conditions described; see U-2(g) in Section VIII, Division 1.

Note: This interpretation also appears as VlIl-2-89-14,





Mll-1-89-206 Section'VIII-I - InterpretationsNo. 27


Subject:ection VIII, Division 1 (1989 Edition), U G 3 4

Datessued:June 20 , 7990

File: BC90-439

Question(I):o the requirements or unstayed flat heads in UG-34 of Section V I I I , Division 1apply only to internal pressure?

Reply (1):Yes.

Question (2): Are there any requirements in Sectionvll,Division 1 which allow the calculation

of minimum thickness for unstayed flat heads under external pressure?

Reply (2): There are no specific provisions which address the condition described; see U-2(g).

442

ASME VIII D1 (Interpretação Vol.27)

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