Summary of Changes
Section I
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Part PR, Requirements for Boilers Fabricated by Rivets; Mandatory Appendix V, Additional
Rules for Boilers Fabricated by Riveting; including Nonmandatory Appendices A-1 through
A-6, Efficiency of Riveted Joints; and Nonmandatory Appendix A-75, Computations of
Typical Nozzle Fittings Attached by Rivets.
Mandatory appendix added to address establishing governing Code edition and addenda for
new construction and for parts. Manufacturer's Data Reports are revised to provide for
reporting the governing edition and addenda.
Par. PEB-8.3 allowing the use of the rules in the new Section VIII Appendix 41 to be used
in the design of Electric Immersion Heater Element Support Plates for Section I
applications.
Addition of 1-1/4 NPS, 1-1/2 NPS, 2-1/2 NPS values to the table in PG-39.5.2.
Revision to PW-39, P-No. 3 to impose the carbon content limitation on pressure parts.
Addition of SA/GB 713 Grade Q345R material for Section I application up to 800°F
(427°C).
Addition of SA-350 to PG-9.1.
New paragraph PG-60.1.2.1 on requirements for independent remote water level indicators.
Section II, Parts A. B. D. E.Customary | Metric
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Section II, Part A
o Over 30 specifications have been updated.
Section II, Part B
o Over 30 specifications have been updated.
Section II, Part D
o Incorporation of Code Cases, addition of new materials, and revisions to stress lines,
external pressure charts, physical properties tables and appendices
o Major revisions include the following
Rewrite of Mandatory Appendix 5 Guideline on the Approval of New
Materials.
Revisions to the allowable and design stress lines in Tables 3 and 4 for
bolting materials based on a complete review of the tables.
Addition of aluminum alloys to the yield and tensile strength Tables U and
Y-1 and revisions to the allowable stress lines in the nonferrous Table 1B.
Section II, Part C
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Adoption of AWS A5.23/A5.23M:2011 as SFA-5.23/SFA-5.23M.
Adoption of AWS A5.14/A5.14M:2011 as SFA-5.14/SFA-5.14M.
Adoption of AWS A5.21/A5.21M:2011 as SFA-5.21/SFA-5.21M.
Section III
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Section III, Division 1
Revisions to include requirements for control of electronic Quality Assurance
Manuals and documents.
o New requirements for auditing and renewal of Owner's Certificates.
o New requirements for Owner's Quality Assurance Program.
o Revisions to Mandatory Appendix II, Article II-1000 "Experimental Stress
Analysis".
o Updated standards and specifications referenced in Table NCA-7100.
o Updates to Material Specifications and Grades Permitted for Class MC Construction.
o New paragraph in Subsection NH for special considerations for Class 1 components
in elevated temperature service.
Section III, Division 2
o Revision to requirements for examination techniques and Mandatory Appendix VI,
Non Destructive Examination Techniques.
o Revision to Mandatory Appendix VIII Qualifications for Arc Welding Reinforcing
Bars.
Section III, Division 3
o Clarification of non- destructive examination requirements applicable to weld build
ups (Sections NB, WB, WC).
Section III, Division 5
o Reorganization of Subpart HCB to give specific construction rules its own
subsubarticle.
Section III, Appendices
o Revision to Non Mandatory Appendix D -- Recommended preheat temperatures for
materials.
o New non mandatory appendix, Subsection NF . E, to address dampers, energy
absorbers and snubbers.
o New non mandatory appendix DD, Polyethylene Material Organization
Responsibilities Diagram.
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Section IV
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Manufacturer's Data Report forms are being revised in order to simplify the requirements for
the Authorized Inspector to complete the "Certificate of Shop Inspection" and the
"Certificate of Field Assembly Inspection" portions of the Manufacturers data report form
by requiring only the Inspector's signature, National Board commission number and
endorsement to be recorded.
A new paragraph covering tolerances is being added under Part HG, as HG-103, titled
"Tolerances". This revision was recommended, since forewords are not officially considered
part of the Code and any language perceived as mandatory and enforceable needed to be
moved to the body of the Code.
A new Appendix containing rules for the governing BPVC Edition and Addenda is being
added to Section IV as well as revisions needed throughout the Code to clarify the
requirements. It had been suggested that the BPVC be revised to clarify the requirements
rather than relying on interpretations. During work on this item, it became apparent that
clarification was needed for establishing the governing BPVC Edition and Addenda for new
construction and field assembly as well as for parts. Also, as a result of initiating this item,
CSP-9 was revised to establish a policy for establishing the effective BPVC Edition and
Addenda to be used to construct an item that is to be stamped with an ASME Product
Certification Mark (e.g. Code Symbol Stamp).
Section V
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T-120(f) was revised to permit ISO 9712 and the ASNT Central Certification Program to
fulfill requirements for training, experience, and examination.
The T-430, T-460, and T-470 series of paragraphs and related figures were revised to clarify
"weld metal overlay cladding" terminology.
T-463.1. and T-472.2 were revised for straight beam examination calibration block guidance
and restricted access weld applicability.
T-462.7 and Article 4 Nonmandatory P were added to provide rules on when a split distance
amplitude correction (DAC) curve is required and provide an example of how the curve is
constructed.
Section VI
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(No major revisions for the 2013 Edition, although major revisions are expected for the
2015 Edition).
Section VII
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(No major revisions for the 2013 Edition, although major revisions are expected for the
2015 Edition).
Section VIII, Division 1
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New Nonmandatory Appendix on Guidance to the Responsibilities of the User and the
Designated Agent.
New Mandatory Appendix on Establishing Governing BPVC Editions and Case for Pressure
Vessels and Parts.
New Mandatory Appendix on Cold-Stretching of Austenitic Stainless Steel Pressure
Vessels.
Friction Stir Welding (FSW) added as an acceptable welding process for VIII-1
construction.
Permits marking by electro-chemical etching.
Section VIII, Division 2
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New Mandatory Appendix on Establishing Governing BPVC Editions and Case for Pressure
Vessels and Parts.
Permits certification of fully identified materials by the ASME Product Certificate Holder.
Permits marking by electro-chemical etching.
Section VIII, Division 3
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New Mandatory Appendix on Establishing Governing BPVC Editions and Case for Pressure
Vessels and Parts.
KD-1, KD-2, KD-3, to include the simplified elastic-plastic analysis, thermal stress
ratcheting assessment and a fatigue penalty factor for linear elastic fatigue analysis.
New Nonmandatory Appendix B, which includes the requirements of withdrawn standard
High Pressure Systems Nonmandatory Appendix A and Section 3000.
To permit electroslag welding for weld overlay in KF-2 Supplemental Welding Fabrication
Requirements.
Section VIII, Interpretations
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(No major revisions to the 2013 Edition)
Section IX
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New Part QF, "Plastic Fusing Requirements".
New Part QG, "General Requirements".
Addition of Hybrid Plasma GMAW.
Addition of Hybrid Laser GMAW.
Incorporation of Friction Stir Welding (FSW).
Section X
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A new mandatory appendix is added to address establishing governing Code edition and
addenda for new construction and field assembly as well as for parts.
Inclusion of construction of stationary fiber-reinforced pressure vessels with load sharing
liners in hydrogen service for Section X application.
Allow the use of Method A (Design Rules) for the design of the small diameter vessels at
higher pressures.
Section XI
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Defines requirements to address operational leakage.
Clarifies additional examination requirements for components accepted by analytical
evaluation or repair/replacement activity.
Clarifies examination requirements for pressure retaining nozzle welds in pressure vessels.
Revises Appendix O to augment RV head penetration flaw evaluation guidance.
Revised Nonmandatory Appendix T: (a.) clarifies that the appendix is a guidance document;
(b.) deletes the test pressure and test temperature entries on Form RRA-1; (c.) revises the
wording in the certificate of compliance section of Form RRA-1.
Examination volume requirements of reactor vessel set-on type nozzles joined by full
penetration butt welds.
Section XII
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Revision of Foreword, Part TG-100.1, and creation of a new mandatory appendix ZZ
regarding clarification for establishing a governing Code Edition and Addenda for new
construction and field assembly as well as for parts.
Revision of TM-110.10 to include language addressing standard welded parts
Incorporation of Code Case 2596
Addition of Grade A designation to SA-645
Revision of TM-250 to reflect changes to Section VIII, Division 1, UHA-51 on impact test
requirements.
Paragraph on tolerances added to TG-1.