Blast load analysis on safe habitat

Safe habitat consist of portal frame structure and blast panel walls are subjected to military grade explosions. The structure is intended to safely house several people during controlled explosion works carried out in its nearby vicinity. Multiple blast sources in different locations are defined to investigate the response of the structure against the blast pressure. The work is part of an industrial research work that covers both simulation-based analysis and physical testing and correlation between the two, using special strain gauges attached in specific locations on the structure. The work is carried out for an undisclosed customer in northen Europe

Redundancy analysis for Donghea 1 offshore jacket structure

The Donghea 1 offshore jacket structure has been operating since 2004 in the Donghea 1 natural gas field, supporting a production facility in the East Sea, offshore of Ulsan, Korea. The production of natural gas has been on going until the year 2019. The jacket structure is assessed for possibility to replace the existing topsides with a wind turbine sub-station facility. One of the many assessments that are carried out for the jacket structure is the redundancy analysis. Here, the reserve strength ratio (RSR) for undamaged structure is compared with various damaged structures based on different scenarios, when subjected to environmental loading. The work is carried out for Ramboll A/S of Denmark on behalf of Equinor ASA of Norway.

Exhaust stack for offshore processing facility

Tapis Enhanced Oil Recovery (EOR) and Rejuvenation Project involves integrating utilities within the Tapis Field Central Processing Platform, to reduce retrofitting and modification to the aging Tapis satellite platforms, located in east coast offshore of peninsular Malaysia.

The Tapis facility is operated by ExxonMobil Exploration and Production Malaysia Inc. The works carried out are structural and thermal analysis of five turbine exhaust stacks. In addition to global analyses of the exhaust stacks, several supplementary analyses were also carried out, lifting analysis, natural frequency analysis, vortex shedding analysis and local nozzle interface analysis.

Fatigue analysis on dehydration adsorber

The Calcasieu Pass LNG Export Terminal Project involves development of export facility will be built on a 930-acre site in Cameron Parish, towards the southern edge of the city of Lake Charles in Louisiana, on the intersection between the Calcasieu Ship Channel and the Gulf of Mexico. Several dehydration adsorber equipment are part of the new facility in the new LNG terminal. These equipment are designed for cyclic fatigue loading for a total operating service life of 30 years. The selected critical hotspots are located in regions of geometrical discontinuities of the equipment, both inside and outside. The work is carried out for Honeywell UOP.

Thermal gradient assessment on circular girth weld

Five different equipment subjected to cold cryogenic services are to be delivered to JGC Flour BC LNG Joint Venture, as part of the LNG Canada Project for LNG Canada. In all the equipment, the support skirt consists of two different material construction, stainless steel on the upper section towards the bottom head and carbon steel towards the bottom of the support skirt. The materials are welded together by a circumferential weld line in a specific location. In the location of this weld line, the dissipated design temperature, shall be similar to the ambient temperature of the equipment surrounding, which is -25 deg. C. It should be noted that the design temperature originating from the inside of the equipment are much lower in the range of – 130 deg. C and – 90 deg. C. The final installation location of the five equipment is in LNG Canada Plant in Kitimat, British Columbia, Canada.

Fatigue analysis on molecular sieve dryer filter

The PUSRI IIB Project for 2000 MTPD Ammonia Plant and 2750 MTPD Urea Plant intends to produce 2,000 tons per day of ammonia and 2,750 tons per day of urea in new facility development in Palembang, South Sumatra, Indonesia. The new facility is owned and will be operated by PT Pupuk Sriwidjaya Palembang. Two units of molecular sieve dryer filters subjected to cyclic loading are analysed and designed for a total operating service life of 20 years. The fatigue lives for critical hotspots are determined throughout the equipment. The work was carried out as a fast track project mainly due to the urgency of the overall project completion.

Refracted boundary parts exposed to extreme heating

One unit of superclaus reactor equipment and two units of first and second converters are designed and delivered to Technicas Reunidas SA, as part of the Chemical and Refining Integrated Singapore Project (CRISP) for ExxonMobil Asia Pacific Pte. Ltd. The equipments are fitted with internal refractory lining and external insulation layer. The internal refractory lining is intended to enclose and protect all internal metal surfaces from extreme heating. However, some of the metal parts would be exposed to extreme heating through the refractory lining. These locations are referred to as refracted boundary parts. The refracted boundary parts are analysed to withstand the high design temperature and pressure. The final installation location of the equipment are in ExxonMobil Singapore Chemical Plant facility in Jurong Island, Singapore.

Degree of Bending (DOB) input for RBI sensitivity study on South Arne lattice tower

As part of the on-going work on the South Arne platform, which include updates of the fatigue and Risk Based Inspection (RBI) analyses, it is judged relevant to revisit a number of the basic variables forming basis for the RBI analyses. The degree of bending (DOB), being one of the variables, is used as an input to the RBI analysis, that determines the inspection programme (frequency of inspection of details with relative low fatigue performance). The DOB values for two different tubular joints with high frequency of inspections is determined. Four locations in the brace footprint are used as the location of sample the stress, i.e. crown and saddle positions, with three load cases used per brace footprint, i.e. axial force, out-of-plane (OP) moment and in-plane (IP) moment. The work is carried out for Ramboll A/S on behalf of Hess Denmark ApS.

Ship Collision and Deterministic Fatigue Analyses in New Fender in Tyra West B

Ship collision analyses and deterministic fatigue analyses are carried out for the new fender in Tyra West B platform in Tyra Field, located in the Danish sector of the North Sea. This is part of the Tyra Future Development Project. Three different ship collision analyses are carried out namely for operating, accidental and post damage conditions. For the fatigue analyses, deterministic fatigue analysis is performed with the aim to confirm that the design of the new fender and attachments to the existing MSF legs have sufficient fatigue strength. The work is carried out for Ramboll A/S on behalf of Total E&P Danmark A/S.

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Redundancy analysis for Donghea 1 offshore jacket structure

Degree of Bending (DOB) input for RBI sensitivity study on South Arne lattice tower

Ship Collision and Deterministic Fatigue Analyses in New Fender in Tyra West B

Fatigue analysis on dehydration adsorber

Blast load analysis on safe habitat

Exhaust stack for offshore processing facility

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