API Electronic Balloting Template/Version April 2003

API Ballot Comments and Resolution Ballot: 650-597 - Design and Welding of Proposal: To clarify F.7.3 statement “Design and welding of roofs Ballot ID: Date: May 4, 2018 Roof Nozzles and the design, reinforcement and welding of roof manholes and 1547 nozzles shall be in accordance with API 620”.

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Voter Name Clause No./ Type of Comment (justification for change) by the Voting Member Proposed change by the Voting Comment Resolution (Vote) Subclause Comment Member No./Annex (e.g. 3.1)

Douglas Miller F.7.2 Technical Affirmative comment: Why say in F.7.2 that material for roof compression area does not need to meet 650 Chicago Bridge & 4.2.9 toughness rules when this componant is not on Iron the list in first sentence of 4.2.9 anyway? Company(CB&I) (Negative) Douglas Miller Technical Negative comment: CB&I negative comments are contained in Larry Hiners ballot. Chicago Bridge & Iron Company(CB&I) (Negative) Nelson Acosta F.7.2 Editorial For consistency within the text of the standard, the F.7.2 "....Figure F-2. Full terms in the proposed text "self supporting" and "cross penetration butt welds shall be HMT Inspection sectional" should be hyphenated. Also, there should be used to connect sections of the (Affirmative) no need to include reference to "API-650" prior to the compression ring. For self- paragraph references 5.10.5 or 5.10.6 since those supporting roofs, the paragraphs are from API 650 also. compression area shall not be less than the cross-sectional area calculated in 5.10.5 or 5.10.6 as applicable. Materials for compression areas may be selected from Section 4 and need not meet toughness criteria of 4.2.9." Doug Bayles F.5.1 & Technical If Agenda Item 650-652 is passed, then the changes 1. The thickness of the self F.7.3 need to be incorporated into this document. supporting roof shall be Inserv Integrated calculated utilizing API 620 Service Company Section 5.10.2 and 5.103 using LLC F.7.3 - Combine item 1 & 2 for clarity of minimum API 650 Table 5-2 for allowable (Affirmative) thickness. stresses and API 620 for joint efficiency and radiography requirements. Minimum thicknesses shall be equal to or greater than those required by API 650 Section 5.10.5 or 5.10.6 page 1 of 3 API electronic balloting template/version April 2003 API Ballot Comments and Resolution Ballot: 650-597 - Design and Welding of Proposal: To clarify F.7.3 statement “Design and welding of roofs Ballot ID: Date: May 4, 2018 Roof Nozzles and the design, reinforcement and welding of roof manholes and 1547 nozzles shall be in accordance with API 620”.

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as applicable.

3 and 4 become 2 and 3 Steven Adolphsen F.7.3 Technical It appears we are still leaving he door open for a “Alternatively, roof manways and similar future inquiry on manways and nozzles. nozzles may be designed per CBI Services API 620 using all the rules for (NonVoter) API 620 roof manways and nozzles, including the 250°F maximum design temperature limitation.”

Larry Hiner F.7.2 and Technical Negative comment Add to F.5.1 F.5.1 Chicago Bridge & F.7.2 - I agree that the compression area should be Note: Th may be proportionally Iron determined using F.5.1 rules except the full roof dead increased by a ratio of the plate Company(CB&I) load should counteract the internal pressure. Using weight to the weight of the just the roof thickness does not account for roofs using composite roof to account for (NonVoter) attached structural. F.5.1 determines the required permanent roof structural tension area. This must be changed at the same time attached to the roof. the use API 620 is removed.

Larry Hiner S.3.5.3 and Technical Negative comment On premise that S.3.5.3 and M.3.7 M.3.7 are maintained, Chicago Bridge & S.3.5.3 and M.3.7 can not be deleted however should Iron be modified. The effects of temperature on the Company(CB&I) compressive strength of the compression region cannot ignored. In each paragraph remove the (NonVoter) reference to allowable compressive stress and replace with the area required by F.5.1 must be multiplied by the ratio of the minimum specified yield stress to the yield stress of the material at design temperature.

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Larry Hiner F.7.2 Technical Negative comment Add to F.7.2: Components whose thickness is controlled by Chicago Bridge & F.7.2 Add a statement to allow plate thickness to compression are not subject to Iron exceed the limits of 4.2.2 for components whose the plate thickness limits of 4.2.2 Company(CB&I) thickness is determined by compression. This could be added in Appendix F or change 4.2.2 to say the (NonVoter) thickness limits herein stated apply to plates subjected to primary tensile stresses greater than 1/2 of the allowable stress.

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