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m i o n VIII-1 - nterpretationsNo. 19 Vlll-1-86-36,lll-1-86-37,lll-1-86-38

Interpretation: VIlI-1-86-36

Subject:ection Vlll-1, UG-l6(b)(2),inimumWall Thickness

Date Issued: March 5, 1986

File: BC85-599

Question: Are full welded heat ransferplates of plate-typeheat exchangers exempted by

UG-l6(b)(2) from the ' / 6 in. minimum wall thickness requirements?

Reply: Yes.

Interpretation: Vlll-1-86-37

Subject:ection VIII-1, UCS-85, Heatreatment

Date Issued: March 5, 1986

File:

Question: During the fabrication of a nonimpact tested pressure vessel made rom SA-516 Grade

70 that is 5 in. thick, normalization of the material is conducted by the fabricator as a part of a hot

forming process. In order to satisfy the requirementsof UCS-85:

(a) are mill test specimens required to have the heat treatment associated with the hot forming

simulated?

(b) is it required that the manufacturer define for the mill the anticipated cooling rate from the

critical temperature during the hot forming operation?

Reply:

(a) Yes.

(b) Yes.

Interpretation: VIlI-1-86-38

Subject:ection Vill-1, UG-4, Material Testeports

Date Issued: March 5, 1986

File: BC85-608

Question: Is it a requirementof SectionVIII, Division 1, that the manufacturer of Code items shall

examine the material test report or certificate of compliance (when these documents are required) and

shalldetermine that it represents the materialand meets theequirements of thematerial

specification?

Reply: Yes.

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Section VIII-1 - nterpretationsNo. 32 Vlll-1-83-77R. Vlll-1-86-27R

Revisions to Interpretations Published in Previous Volumes

The following revised interpretations supercede issued interpretations VIII-1-83-77, VIII-1-86-27,MII-1-89-86, and VIII-1-92-77, whichere originally published n Interpretations Volumes 1 2,18,25, and 31, respectively, but are now no longer valid.

Interpretation: Vlll-1-83-77R

Subject:ection VIII, Division 1 (1992 Edition); UW-2(a)

Date Issued:December 3, 1992

File:

Question: May electric resistance weldedERW) pipe be used or the shell of a pressure vessel

designed for lethal service under UW-2(a) in Section VIII, Division 1whether or not radiographic

examination is performed on the ERW welded seam?

Reply: No. See UW-2(a). The provisions of UW-2(a)(2) and (3 ) do not apply.

Interpretation: VIII-1-86-27R

Subject:Section VIII, Division 1 (1992 Edition);UCS-85(b),HotFormingandHeat Treat-

ment

Date Issued:December 3, 1992

File:

Question: For vessels built tohe rules of UCS-85(b) in Section VIII, Division 1, does he term“heat treatment” include heating for the sole purpose of hot forming?

Reply: Yes.

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Section VIII-1- nterpretationsNo.36

Volume 19

Interpretation

VIII-1-86-36 In the second line of he Question, correct '/6 in. to read 1/16 in.

Volume 29

Interpretation

VIII-1-89-264 In rhe third lineof

Question (5) , correct 3:lO taperfa

read 3:l taper

Errata

Errata

633

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