underwater water welding made simple · 2019-06-14 · specification criteria as stated under bsen...

INTRODUCE

QUALITY

UNDERWATER WELDING ELECTRODES

FOR WELDING MADE SIMPLE

Meeting the demands of quality and performance

Author - DJ. Keats© - Re-issued by the author for publication 2017

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CONTENTS: 1

WHY CHOOSE BARRACUDA GOLD ELECTRODES 2

PERFORMANCE CHARACTERISTIC 2

TECHNICAL SUPPORT 2

BUTT WELD WPS FOR NOORDHOEK OFFSHORE & ONGC 3

GENERAL VIEW OF WELDED TEST PLATE 4

WELDING PROCEDURE SPECIFICATION (LLOYDS APPROVED) 5/6

STORK LABORATORY TEST REPORTS 7/14

FILLET WELD WPS FOR DIVE TECHNOLOGIES ON BEHALF OF DML 15

GENERAL VIEW OF WELDED PLATES 16/17

THE TEST HOUSE LABORATORY REPORTS 18/27

BUTT WELD WPS FOR MOS & CORE TECHNICAL SERVICES 28 GENERAL VIEW OF WELDED TEST PLATE 29 ETRS LAB PHOTO OF TEST PLATE SAMPLE 30/31 WELDING PROCEDURE SPECIFICATION (ABS APPROVED) 32/33 AMERICAN BUREAU OF SHIPPING SURVEY REPORTS 34/35 ETRS LABORATORY TEST REPORTS 36/43


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WHY CHOOSE BARRACUDA GOLD ELECTRODES: The Barracuda ‘Gold’ underwater welding electrode has been designed and formulated to produce the highest quality weld-metal possible, offering excellent ductility, toughness and strength properties. The electrode, which has added nickel, offers significant improvements in mechanical/metallurgical properties to standard C/Mn (mild-steel) electrodes. The electrodes are manufactured under strict quality control methods and procedures (ISO 9000) to ensure the highest, repeatable quality at all times. For an electrode to produce high quality welds underwater, attention to the waterproofing is of paramount importance to ensure moisture is prevented from penetrating the flux coating, while at the same time, allowing the electrode to burn “fry” without undue interference to the arc, or allowing contamination to transferred to weld-metal. The Barracuda Gold electrode is guaranteed not to flake, blister even under the harshest of environments and it also offers the maximum electrical protection for the diver. Electrodes may be submerged up to a 90 minute period without any undue interference or loss of performance, although we always recommend electrodes should be used within a 30-45 minute period, where possible.

Although no standard/specification exists for underwater welding electrodes, the nearest equivalent may be taken from BSEN ISO 499: 1995 for covered welding electrodes. The nearest code being E4221NiRR (AWS E7014). Barracuda Gold electrodes exceed the specification criteria as stated under BSEN ISO 15618-1:2002 and AWS D3.6M-99 for underwater class ‘B’ welds.

PERFORMANCE CHARACTERISTIC: The electrode is designed to be used in all positions, using touch welding techniques and offers a friendly, soft, controllable arc characteristic, making welding very easy for both experienced and inexperienced divers alike. The electrode also has a graphite tip for easy striking. For more detailed information and additional technical/operations features, see separate data sheet.

(What a difference a good electrode can make in the right hands).

TECHNICAL SUPPORT: Customers of Speciality Welds can be assured of access to unlimited technical support from one of the worlds leading experts; including, Development of formal welding procedures Qualification of welder-divers Onsite/telephone technical assistance Project management / consultancy We can also offer a number of publications to

help improve your understanding of the subject of underwater welding; titles include; ‘The Professional Divers Manual on Wet Welding’ and ‘A Welder’s Mate’.


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BARRACUDA WELDING TRIALS

BUTT (GROOVE) WELD SAMPLES

CONDUCTED JULY 2004

FOR

NOORDHOEK OFFSHORE LIMITED

ON BEHALF

OF

ONGC

AS WELDED

BY

DAVID J. KEATS


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GENERAL VIEW OF WELDED TEST PLATE FOR NOORDHOEK OFFSHORE

CLOSE UP ON PLATE SECTIONS

Test Plates Details Plates: Carbon Steel S355J2G3 & S235JRG2 (BSEN 10025-1) 350 x 25mm Electrodes: Barracuda Gold Joints: Single V butt welds with backing strip Positions: Vertical-down (3G) and Flat (1G) (weld shown is vertical-down single V butt weld)

Visibility: Poor Location: Freshwater test tank Client: Noordhoek Offshore Project: Offshore platform repair Bombay High Date: July 2004 Welder: David J. Keats


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FILLET WELD SAMPLES

CONDUCTED OCTOBER 2006

FOR

DIVE TECHNOLOGIES LIMITED

ON BEHALF

OF

DEVENOPORT MANAGMENT LIMITED

FOR

MINISTRY OF DEFENCE

AS WELDED

BY

DAVID J. KEATS


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GENERAL VIEW OF FILLET WELD TEST PLATES

VERTICAL DOWN - 2 PASS WELD

OVERHEAD - 3 PASS WELD


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GENERAL VIEW OF SHEAR WELD TEST PLATES

VERTICAL DOWN - 2 PASS WELD

OVERHEAD - 3 PASS WELD


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BUTT (GROOVE) WELD SAMPLE

CONDUCTED 1998/1999

ON BEHALF

OF

MOS SPECIALITY WELDS LIMITED

&

CORE TECHNICAL SERVICES LIMITED

AS WELDED

BY

DAVID J. KEATS


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GENERAL VIEW OF BUTT WELD TEST PLATE FOR ‘MOS’ & CTS (AUSTRALIA)

CLOSE UP VIEW OF PLATE SECTIONS:

TOP

MIDDLE

BOTTOM


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underwater water welding made simple · 2019-06-14 · specification criteria as stated under bsen...

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