WELDOLET

George Anung

UIA/T/E/CMC

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Topics Outline

Images Of Weldolet Clarification Traditional Branches Evolution Of Traditional Branches Definition Clarification in Interpretation Welding Requirement Recent Events Photos

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Weldolet

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Clarifications

An Olet: a generic name for an intergrally self-reinforced butt welded set-on branch connection.

The Olet and Weldolet trademark is owned by Bonney Forge

ASME, ANSI, MSS and API simply referred to them as branch connection fitting

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Traditional Branches

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Evolution Of Traditional Branches To Self-Reinforced Branches

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Definition

Branch connection fitting defined as an intergrally reinforced fitting welded to a run pipe and connected to a branch pipe by a buttwelding, socket welding, threaded, or flanged joint; includes a branch outlet fitting conforming to MSS SP-97 (ASME B31.3-2006)

Groove weld defined as the joint penetration (depth of bevel plus the root penetration when specified). The size of a groove weld and its effective throat are the same. (ASME B31.3-2008)

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ANSI B31.3 Welding Requirement

328.5.4(d) Branch connections, including branch connection fittings which abut the outside of the run or which are inserted in an opening in the run shall be attached by fully penetrated groove welds. The

welds shall be finished with cover fillet welds having a throat dimension not less than ........

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ASME B31.3 Clarification in Interpretation No. 11-10, 1993

Question: In accordance with ASME B31.3-1990 Edition, para 304.3.3 (much early edition), may the groove weld attaching an intergrally reinforced branch connection fitting to the run pipe be less than

fully penetrated, if the depth of the groove is greater than required for adequate branch?

reinforcement?

Answer: NO. See para 328.5.4(d)

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ASME B31.3 Clarification in Interpretation No. 13-11, 1994

Question: In accordance with ASME B31.3-1993 Edition, Addenda a, what is the effective weld throat thickness required for a proprietary intergrally reinforced branch connection fitting?

Reply: The thickness is as required by the manufacturers design........

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Bonny Forges Requirement

Bonny Forge says Particular care should be taken to weld only the bevel portion of the fitting. This

......... prevents the erroneous practice of welding up to the rib on the skirt.

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Bonny Forge General Instruction

Drawings showed welding from root right up to the edge of weld bevel plus reinforcement

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MSS SP-97 Welding Requirement

Para. 1.2: Fittings manufactured to this Standard Practice are designed to make a fully reinforced

branch connection in accordance with applicable piping code requirements, when attached, at an

opening in a run pipe by means of a full penetration weld

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ANSI B31.8 Welding Requirement

831.41(j) The branch shall be attached by a weld for the full thickness of the branch or header wall plus a fillet weld, ......

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ASME B31.3 Clarification in Interpretation No. 22-22, 2006

Question: In accordance with ASME B31.3-2006 Edition, when para. 328.5.4(d) is applied to proprietary integrally reinforced branch fittings, does the term fully penetrated groove weld describe a weld that fills

to the manufacturers weld line or to the top of the groove if no weld line is present?.

Reply: Yes. See definition of groove weld under size of weld in para. 300.2. See also interpretation 13-11

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Recent Events

CILIPADI PROJECT CPDR-A : 39 F23R-A : 87

F28 PROJECT F28DR-A : 57 F6 : NONE REPORTED YET

E8 & F13 PROJECT GREEN FIELD : NONE REPORTED BROWN FIELD : NONE REPORTED

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Photos-incomplete welding

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Photos - Good Weldolet Welding joint (after repair)

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Questions

Why did it happen?

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The End

Thank You!

Q & A

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