Evaluation of Weld-Zone Corrosion of Shipbuilding Steel Plates for Use in the Arctic Environment

Brigham, R. J.; McLean, M.; Donepudi, V. S.; Santyr, S.; Malik, L.; Garner, A.

doi:10.1179/cmq.1988.27.4.311

Cited by 9 publications

(9 citation statements)

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“…Figure 4 right). This may be attributed to weld zones usually being more prone to corrosion than adjacent zones, generally considered caused by localised galvanic activity as a result of (usually small) compositional differences (Kato et al 1978;Brigham et al 1988) although microstructure and microbial activity also may be involved (Chaves and Melchers 2011). For this pipeline, a number of corrosion products were observed on the flush disc coupons, including iron sulphide (FeS), identified as pyrrhotite (Table 1).…”

Section: Pipeline Bmentioning

confidence: 93%

Corrosion and durability of offshore steel water injection pipelines

Comanescu

Melchers

Taxén

2015

Ships and Offshore Structures

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Carbon steel pipelines are widely used for injection of sea and other waters into oil and gas wells so as to increase the rate of recovery, particularly from mature fields. Internal corrosion usually is mild. However, cases of very aggressive channelling corrosion along the bottom of the pipeline have been observed. Practical experience and anecdotal observations have attributed this to microbiologically influenced corrosion even though extensive use is made of preventative measures including biocides, oxygen scavengers, corrosion and scale inhibitors, and pipeline pigging. Interpretation of data and observations for five water injection pipelines, made available by industry, indicate that microbiologically influenced corrosion may play a part in causing channelling corrosion but that the most likely cause is under-deposit corrosion under pipe debris that settles during periods of pipeline shut-downs and low water velocity.

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Section: Pipeline Bmentioning

confidence: 93%

Corrosion and durability of offshore steel water injection pipelines

Comanescu

Melchers

Taxén

2015

Ships and Offshore Structures

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“…E48018-1 < OK73 .08 < E55018-CI , there is a significant difference in the magnitude of the atta ck of both the weld metals and the baseplate s. F or example , in the earlier study [2), the baseplate was att acked to a maximum depth of approx . 0.2 mm and E48018-1 to a depth of approx.…”

Section: Tank Testsmentioning

confidence: 93%

“…The repair weld electrodes were chosen on the basis of chemistry as well as performance in a previous program [2]. These electrodes and their as-deposited weld metal chemical composition are listed in Table 2. E48018-1 was chosen as a typical electrode presently used in ship repair applications due to its improved toughness as compared to E48018.…”

Section: Methodsmentioning

confidence: 99%

“…The average corrosion rates differ significantl y for different weld metal compo sitions, partic ularly due to differences in Cu and /or Ni content as alread y shown by Brigham et at. [2).…”

Section: Tank Testsmentioning

confidence: 95%

“…This work involved a series of The CANMET weld-zone corrosion program [1] has been corrosion and mechanical tests which are conducted on Grades designed to evaluate the overall problem in the Canadian A, E and EH carbon-manganese steels that were originally context. The first phase of the program, in which CANMET -welded using the SAW process and subsequently repaired with ALGOMA-AMCA-PAPRICAN were participants, has just SMAW consumab1es-E48018-1, CLA E48018-RCR, E55018-been completed [2]. Various corrosion tests were conducted C3, E55018-CI and ESAB OK73.08, using weave and stringer to evaluate the heat-affected zone and weld metal corrosion bead repair procedures.…”

mentioning

confidence: 99%

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Evaluation of Shielded Metal Arc Welding Consumables for Repair of Weld-Zone Corrosion

Parkinson¹,

Malik²,

Mitrovic-Scepanovic³

et al. 1989

Canadian Metallurgical Quarterly

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Five SMA W consumables were evaluated as candidates for repairing weld-zone corrosion in Canadian Coast Guard ships constructed of Grade A, Grade E and Grade EH steels on the basis of mechanical properties and corrosion resistance. A spectrum of corrosion rates was observed but several electrodes were found to be compatible with all baseplates including Grade EH containing 1.39% Mn. INTRODUCTION(OK73.08), E55018-C1, E55018W) and submerged arc welding (SAW) consumables (F4803-EL12, Tibor 22/0P121TT (OerCanadian Coast Guard, Fleet Systems, operate and maintain a likon), F8P10-ENi3 and F8A4-ENi1) which produce weld large variety of ships that perform duties such as Arctic voyages, deposits with varying amounts of alloying elements. Anodic icebreaking, vessel escort, navigational aids/buoy tending and dissolution tests were carried out on butt weld seams and on occasional search and rescue operations in Gulf and Arctic ice heat-affected zones that were obtained by the Noren weld hardconditions. This portion of the fleet, approximately 21 ships, is ening procedure. Trapezoidal samples of these weldment comc~mprised of one Type 1300 which is a heavy icebreaker, seven binations were subjected to tank tests at CANMET. In the case Type 1200s which are medium gulf/river icebreakers, eleven of weld metal corrosion, it was found that corrosion resistance Type 1IOOswhich are major navaids tender/light icebreakers increased with increased copper and nickel content in the and two Type 1050s which are medium navaids tender/light deposited weld metal. Thus, the highly alloyed weld metals, for icebreakers. Nine of these ships, mostly new designs, entered example, E55018-CI and F8PID-ENi3, were found to be highly the fleet during the recent vessel acquisition program. corrosion resistant. In combination with corrosion resistant The ice transiting fleet has been experiencing preferential weld metals, it was observed that a Mn content greater than corrosion of weld metal and, with the introduction of higher approximately 1.1% in the base plate caused extensive heatstrength E and EH grade steels, can anticipate accelerated heat-affected zone corrosion. These observations are in general in affected zone (HAZ) attack. This accelerated corrosion over a agreement with the previously reported Finnish work [3]. period of time requires recurring repairs throughout the operWhile the overall trends governing weld-zone corrosion are ationallife of an icebreaking ship. A typical example of weld clear, no specific information is available on appropriate parwastage is the recent repair to the CCGS John A. MacDonald, ameters for weld repair. Consequently, the second phase of a Type 1200 built in 1960, where some 18,000 bead feet of weld the CANMET weld-zone corrosion program was defined in were deposited on the seawater side of the shell representing a cooperation with CCG and aimed specifically at optimizing the cost of several hundred thousand dollars.repair of Coast Guard ships. This work involved a series of The CANMET weld-zone corrosion progr...

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Localized Corrosion of Iron and Steel

Matsushima

2011

Uhlig's Corrosion Handbook

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Evaluation of Weld-Zone Corrosion of Shipbuilding Steel Plates for Use in the Arctic Environment

Cited by 9 publications

References 2 publications

Corrosion and durability of offshore steel water injection pipelines

Corrosion and durability of offshore steel water injection pipelines

Evaluation of Shielded Metal Arc Welding Consumables for Repair of Weld-Zone Corrosion

Localized Corrosion of Iron and Steel

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