Electrical engineering

Communication link design based on availability

jorgemartiresElectrical engineering, Reliability, availability and maintainability analysis

MAR Consulting assisted a client in evaluating (satellite) communication link design solutions from operability, availability, and cost stand-point. The services of the communication link between the unmanned surface vessel (USV) are: Transfer payload data generated during seabed surveys or subsea inspections; Control and operate the USV, in emergency situations; Control and operate the unmanned launch and recovery system, in emergency situations; Control and operate the autonomous underwater vehicles, in emergency situations. The different services listed above have different requirements, such as data transfer capability and latency. MAR Consulting proposed several options to fulfill these operational requirements. We focused particularly on […]

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FMECA / FMEDA subsea drilling BOP (electrical and hydraulic systems)

jorgemartiresElectrical engineering, Failure mode analysis, Safety and reliability engineering, Subsea engineering

MAR Consulting facilitated and documented a Failure Modes, Effect, Criticality and Diagnostics Analysis (FMECA / FMEDA) of the electrical and hydraulic control and safety systems of a major drilling contractor’s subsea drilling BOP. This work is part of an extended partnership to deliver such a product to the entire fleet of drilling rigs and ships. Description of projects MAR Consulting has been involved as part of this partnership: FMEA of electrical and control systems in subsea BOP · MAR Consulting; FMECA of redundant subsea BOP deadman-autoshear · MAR Consulting; FMECA electrical and control systems in subsea BOP · MAR Consulting; […]

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FMECA of topside BOP and control system

jorgemartiresElectrical engineering, Failure mode analysis, Functional safety, Reliability, availability and maintainability analysis, Safety and reliability engineering

Introduction MAR Consulting facilitated and documented a Failure Modes, Effects and Criticality Analysis (FMECA) for a major operator, of a hydraulic and pneumatic control system in a topside drilling Blow-Out Preventer (BOP). The FMECA was part of the initiative to re-start drilling in a field in the Norwegian Continental Shelf (NCS). The BOP OEM updated the BOP with a shear boost upgrade, PLC upgrade, auxiliary readback pressure panels, and Managed Pressure Drilling (MPD) flowline function addition. Objective In addition to the failure analysis, the Safety Analysis Report (SAR) used the FMECA outcome to comply with functional safety rules and regulations […]

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FMEA of electrical and control systems in subsea BOP

jorgemartiresElectrical engineering, Failure mode analysis, Reliability, availability and maintainability analysis, Safety and reliability engineering, Subsea engineering

MAR Consulting facilitated and documented an FMEA of electrical and control systems of a major drilling contractor’s subsea BOP. Purpose of the FMEA MAR Consulting facilitated the failure mode, effects and criticality analysis (FMECA) based on the methodology described on international standard IEC60812. Since it also included analysis of diagnostic capabilities, it could also go by the FMEDA designation (failure mode, effects, and diagnostic analysis). However, the purpose was significantly different than most FMEAs. Typically, an FMEA evaluates a design with the objective to unveil its weaknesses (and strengths). As a result, this information can form the basis of a […]

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FMECA electrical and control systems in subsea BOP

jorgemartiresElectrical engineering, Reliability, availability and maintainability analysis, Safety and reliability engineering, Subsea engineering

MAR Consulting facilitated and documented an FMECA of electrical and control systems of a major drilling contractor’s subsea BOP. Purpose of the FMECA MAR Consulting facilitated the failure mode, effects and criticality analysis (FMECA) based on the methodology described on international standard IEC60812. However, the purpose was significantly different than most FMECA workshops. Typically, external resources perform an FMECA to evaluate a design with the objective to unveil its weaknesses (and strengths). As a result, this information can form the basis of a cost-benefit analysis for design improvement opportunities. In this project, however, in addition to the above, the drilling contractor/operator will use […]

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EHAZOP of power plant concept

jorgemartiresElectrical engineering, Hazard analysis

MAR Consulting performed an Electrical Hazard and Operability (EHAZOP) study of the electrical systems present in a power plant concept. Power Plant Concept The client wished to analyze a new power plant concept based on ultimate generation high-efficiency engines able to run on natural gas and heavy fuel oil. The engines are expected to run mostly on natural gas. Engine-based power generation will provide the flexibility necessary to counterbalance fluctuations caused by intermittent sources of energy into the grid, such as renewable energy sources. Objectives of the EHAZOP The EHAZOP focused on hazards potential resulting from the design, operation, and […]

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Electrical SAFOP (EHAZOP) of US eLNG plant

jorgemartiresElectrical engineering, Hazard analysis

MAR Consulting AS facilitated an electrical safety and operability (SAFOP or EHAZOP) analysis of a unique North American liquified natural gas (LNG) plant. The LNG plant is being expanded with electric motor-driven technology for liquefaction resulting in reduced emissions and eco-friendly operations. An electrical SAFOP consists of hazard identification and safety analysis; system operability; and operator task analysis of the electrical systems in the plant. It is performed in workshops (3-weeks duration) with the system and electrical engineers; construction and commissioning personnel; and operators.  

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