Sec II-A Interpretation Part1

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I NTE R PRETATI ON S

NO. 12 - SECTION Il-A

Replies to Technical Inquiries July 1, 1982, through December 31, 1982

and Revisions Issued July 1, 1982, through April 1, 1983

FOREWORD

This publication includes all of the written replies issued between the indicated dates by the ASME Staff on behalf of the ASME Boiler and Pressure Vessel Committee to inquiries concerning interpretations of the Boiler and Pressure Vessel Code.These interpretations are not a part of the Addenda or the Code.

These replies are taken verbatim from the original letters, except for a few typographical and editorial corrections made for the purpose of improved clarity. In some instances, a review of the interpretation revealed a need for corrections of a technical nature. In these cases, a revised reply, bearing the original Interpretation Number with the suffix R, is presented. Following these revised replies, new interpretations, and revisions to them issued during the same 6-month period, are assigned Interpretation Numbers in chronological order. Interpretations applying to more than one Code Seaion appear with the replies pertaining to each affected Section.

ASME procedures provide for reconsideration of these interpretations when or if additional information is available which the inquirer believes might affect the interpretation. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME committee or subcommittee. As stated in the Statement of Policy in the Code documents, ASME does not “approve,“ “certify,” “rate,” or ”endorse” any item, construction, proprietary device, or activity.

These replies apply to the latest Edition and Addenda at the time of the inquiry or the Edition and Addenda stated in the reply. Subsequent revisions to the rules may have superseded the reply.

For detailed instructions on “Preparation of Technical Inquiries to the Boiler and Pressure Vessel Committee,” refer to Appendix 1.

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D 9009275 0033483 2 5 1

SECTION II - PART A

Subiect

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interpretation F ik CJO.

........................................................................... llA-83-03 Bco2451 SA-182, Paragraph 9.4

SA-479, Table 1, Type 316 Hardness Requirement ........................................... llA-83-01 K 8 2 - 3 7 9 SA-540.. .......................................................................................... ll A-83-02 BC82-625

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Section Il-A - Interpretations No. 12 NA-8301, llA-83-02

Interpretation: UA-83-01

Subject: Section il-Part A, SA-479, Table 1, Type 316 Hardness Requirement

Date Issued: August 23, 1982

File: BC82-379

Question: It appears that the hardness requirement for Type 31 6 strain-hardened material in Table 1 of Spec. SA-479 is in error. is the requirement proper and intended and, if not, may it be ignored?

Reply: The ASTM subcommittee which has jurisdiction over the ASTM specification has determined that the hardness requirement for Type 31 6 strain-hardened material in Table 1 of the specification is an error and was not intended. Action has been taken to delete the hardness specification from the ASTM specification. Hardness requirements for strain-hardened material are being developed in ASTM.

Section li is also of the opinion that the requirement is an error since the minimum tensile and hardness requirements are in conflict. Action is being taken to delete the hardness requirement from SA-479. Section li is of the opinion that this hardness requirement should not apply.

Interpretation: HA-83-02

Subject: Section Il-Part A, SA-540

Date issued: September 21, 1982

File: BC82-625

Question (1): May the tempering operation for SA-540 material supplied in quenched and tempered condition be performed in more than one cycle in order to obtain the required mechanical properties?

Reply (1): Yes. It is permissible to perform the tempering operation in more than one cycle.

Question (2): in the case performing tempering as per Question (11, would each cycle be considered a new heat treatment, therefore allowing only one quenching and three tempering cycles to be permitted?

Reply (2): No, Paragraph 14.1 limits heat treatment to three complete quenching and tempering cycles, regardless of the number of tempering steps applied in each cycle.

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Sec II-A Interpretation Part1

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