Sub Committee 6 Ballot resolution Summary

1. Sub Committee 6 Ballot resolution Summary June 2012 Mike Briggs

2. Summary • 17 of 25 voting members voted. • 4 negative and 13 affirmative votes. • 52 comments in all • Most all changes were deemed to be fairly minor in nature and the WG did not feel there were any technical changes to the requirements of the standard.

3. Details of proposed changes • Partial (an adjective) should be replaced with Partially (an adverb). WG felt the current wording was correct • The terms clad and cladding are introduced. Previously only the terms overlay or overlaid were used. Section 6 uses only these terms to specify welding requirements. These terms are already used in 6A and the WG felt the proposed wording was clear • Use of “Well bore wetted” in definitions. Suggest changing to wetted surfaces since this term is already defined in 6A • Change phrase – “considered as part of the manufacturer's or this international Standard's design criteria” to "needed for structural strength“. The WG felt this was outside of the WG charter

4. Details of proposed changes • Add "and other corrosion resistant overlay" to the title. The revised title would read Corrosion Resistant overlay (including Ring Grooves and other corrosion resistant overlay) to maintain compatibility with 17D. • Do not remove the reference to the 2004 edition of ASME Section IX. WG agreed this was not the appropriate time to remove this reference and retaining the reference does not create an issue or confusion. • Leave table 14 in the document. This is a redundant table to table 13 and the WG saw no reason to leave the table in. • Do not remove table 15 The WG agreed with this proposal and felt removal of this table was outside the WG charge. Table 15 should be added into section 6.5.1.1

5. Details of proposed changes • Do not remove figure 6 WG agreed this figure should remain in the document and propose it be moved into Section 6.5.1.1 • Following the sentence, "Other than ring grooves, if the overlay material is considered as part of the manufacturer's design criteria or where dimensions for the product are specified in this International Standard, mechanical testing per clause 5 of the overlay material is required," add: "If overlay material is part of the manufacturer's design criteria only, acceptance criteria for mechanical testing of the overlay material shall be as specified in clause 5, or as established by design analysis and specified by the manufacturer.“

6. Details of proposed changes • Add the following statement to the beginning of the sampling section. "Where the overlay is considered part of the manufacturer's design criteria or is part of the design criteria of this standard,". Add the following statement to the end of the sampling section: "If the overlay is not considered part of the design criteria then examination shall be done in accordance with manufacturer's specifications. The WG felt this was a change in requirements, not a clarification, and as such was outside the WG charge. • Delete the phrase "No overlay thickness less than 3 mm (0.125") “ The WG agreed this was outside the WG charge and the statement should be removed. • Clarify what adjacent isin 7.4.2.1.7. Propose the words "on all sides" be added after the word metal. • Revise to direct use of ASME Section V Article 4 using flat bottom hole or side drilled hole techniques. WG felt this would be a change to current requirements and was therefore outside the WG charge.

7. Details of proposed changes • The statement of "prior to machining operations that limit effective interpretation of results" could be misleading and could lead the manufacturer to believe UT must be done on as clad material. Add the following statement to this section. “This may require intermediate machining operation to meet surface finish requirements without limiting the effectiveness of results.” • The reference to visual inspection does not pertain to visual inspection of weld preps - Add "and weld preps to 7.4.2.1.5 b&c • Pressure containing Repairs section refers to 7.4.2.2.12 for PSL2 and 7.4.2.3.11 for PSL3 for preparation prior to welding. These paragraphs surface NDE of finished welds. Previously Table 18 referred to Note "h" which required surface NDE prior to weld

8. Details of proposed changes • The last row of Table 18 "Weld Metal Fully Clad". By definition Fully Clad must be corrosion resistant alloy material. This prevents full weld metal overlay of a loose flange or other body, bonnet, end or outlet connection with any material other than CRA – Agree in principle, the definition of fully clad to be changed to allow CRA or Austenitic Stainless • The row in Table 18 for partial clad calls for surface NDE prior to weld using Paragraph 7.4.2.3.11 which is for surface NDE of finished welds. – Revise to Paragraph 7.4.2.3.8 for base material. • There is a contradiction in the completion note and the sampling requirement in 7.4.2.1.7(1). The sampling note require the UT be done prior to machining that would limit effective interpretation of results. - Add the following statement to the end of the completion note. “Except for volumetric NDE which shall be done prior to machining that would limit effective interpretation of results.”

9. Details of proposed changes • Table 17, the paragraph references for “impact testing” are incorrect. The correct paragraphs for PSL 2, PSL 3/3G, and PSL 4 are 7.4.2.2.2, 7.4.2.3.2, and 7.4.2.4.2 respectively. - Change the table number from 37 to 17. Correct the paragraph references as noted.