Page 35: of Maritime Reporter Magazine (March 1999)

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Blohm + Voss Turns

FSO Into FPSO

Hamburg-based Blohm + Voss Repair

GmbH has historically had much suc- cess in the offshore sector, and this rep- utation was enhanced and extended recently with the conversion of the 138,680 dwt Knock Taggart from an

FSO into an FPSO. Working under strict deadline pressure from owners

Red Band AS and Fred Olsen

Production AS, Blohm + Voss Repair completed the job in just 57 days, three days earlier than the contract stipulated.

The deadline pressure was enhanced by the fact that Knock Taggart arrived in the yard only 22 days after the signing of the contract, a fact which required the shipyard to quickly procure and make available all necessary materials. The job was extensive, and included consid- erable amounts of work on the vessel's propulsion system. Also, the starboard boiler was converted to gas firing o uti- lize some of the associated gas for ship operation.

Circle 106 on Reader Service Card

Protection for the

Shipping Industry!

LR Report Tackles

Fatigue Cracks On

Bulk Carriers

A recent technical report from Lloyd's

Register dubbed "Shell and bottom lon- gitudinal fatigue induced cracks on

Capesize and Panamax bulk carriers" investigates extensive fatigue cracking at web and floor stiffener and tripping bracket connections to the longitudinals in the hopper tank and double bottom spaces.

LR notes in the report that the crack- ing has occurred at connections of both side and bottom shell longitudinals. At these locations, cracking has occurred at the weld toe in a way of the return weld at the heel scallop, with crack indica- tions extensively evident throughout the

Marine Accommodation

Snares RCI Job

Marine Accommodation was contact- ed by Royal Caribbean Cruise Lines to supply BIP Accommodation system for the refurbishment work onboard

Monarch of the Seas being carried out at

Atlantic Marine, Mobile, Ala. The total quantity supplied was 1,3000 wall pan- els, 900 sq. m. of continuous ceiling panel, cabin doors and A-60 doors.

While the delivery was not an unusual one for Marine Accommodation, it was a unique job in that it entailed a delivery time of just four days.

Circle 99 on Reader Service Card

March, 1999 37

Circle 263 on Reader Service Card Circle 286 on Reader Service Card double bottom and hopper spaces.

In making recommendation for repair,

LR notes that, based on the experience gained from these cases, a "best prac- tice" repair and reinforcement recom- mendation has been prepared and this is shown in Figures 2 and 3. The recom- mendation proposes: • partial renewal of web and floor stiff- ener, and tripping bracket, with shaped insert piece incorporating soft toe and heel. • Fitting of soft toe backing brackets. • Adoption of soft heel to ensure that, where weld repair of longitudinal crack- ings is adopted, the landing of the heel and return are positioned away from any world repair. • An optimum nose height at toe and heel of bracket and stiffener of not more than 10mm.

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Circle 267 on Reader Service Card Circle 291 on Reader Service Card

LR recently commented on the problems and solutions of shell and bottom longitudinal fatigue induced cracks on Capesize and Panamax bulk carriers in its Marine Bulletin. fj^H^ •m •TECHNICAL WELD •STITCHING

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