Assystem Capabilities
Transcript of Assystem Capabilities
A NEW
PERSPECTIVE
ON GROWTH
ENERGY & NUCLEAR
Introduction to Assystem
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Product Design & Development
Process & Plant Engineering
Technology Development & Implementation
Operation & Maintenance support
Assystem is a leading international group providing Engineering and Consultancy services across a broad range of industry sectors. The UK branch of Assystem has 10 offices, a permanent workshop facility and approximately 1500 engineers. Energy & Nuclear is the oldest of the Assystem UK divisions, with a heritage spanning 40 years. Over that time Assystem UK has achieved an impressive record of growth and diversification and provides value-added services clients in Power Generation, Oil & Gas, Aerospace, Automotive, Defence, Marine and Life Sciences industries. Assystem UK provides a full life cycle of design services that include concept design, detail design, mechanical and electrical control & instrumentation engineering, analysis, design substantiation, safety engineering, purchasing, assembly & testing and recruitment. Through its network of offices, Assystem provides a direct
local interface to our customers, enabling a clearer
understanding of client requirements and stronger working
relationships. Delivery of the consultative and technical
solutions is then delivered through the resources and
technical structure at the local offices and technical centres
of excellence throughout the country.
Contract Models
Design Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Design Engineering Services
Within these market areas, we provide a comprehensive array of services and products that include concept design, detail design, EC&I, engineering, analysis, substantiation, manufacturing, testing and recruitment.
Assystem is a leading international group providing Engineering and Consultancy services across a broad range of product manufacturing and process sectors including the Aerospace, Automotive, Defence, Energy, Life Sciences, Naval and Nuclear industries.
The Energy & Nuclear Division of Assystem UK Ltd. has a heritage spanning 40 years and over that time the group has achieved an impressive record of growth and diversification. The strength of the group lies in the ability to provide dedicated, multidiscipline project teams composed of specialist staff. There are currently 10 UK offices and one permanent Test & Development Facility.
The company typically operates in four market areas:
Product Design & Development
Process & Plant Engineering
Technology Development & Implementation
Operation & Maintenance support
How we work Through its network of offices, Assystem provides a direct local interface between customers and the Assystem organisation. This enables us to establish a clear understanding of our client’s requirements. Delivery of the technical solutions is then facilitated by the resources, facilities and technical capabilities throughout the company at the local offices and technical centres.
Design and Substantiation
Product efficiency demands the linking of design and assessment to the required targets to be carried out concurrently to achieve the best designs in the shortest possible time. Assystem achieves this by embedding the analysis function within the design loop and ensuring that the lessons learnt from the functional performance of one iteration is fed back to the next: the design and analysis engineers sit next to each other and work on the designs concurrently.
Conceptual Design
Multi-Disciplinary Engineering Design
Design Studies
Design Capabilities:
Detail Design & Analysis
Process Simulation & 3D Mock Ups
Detail design, manufacture & test
Design Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Seismic assessment (ASCE4-98 / Eurocode 8)
Response spectrum and time history analysis (linear or nonlinear)
Steelwork element design and detailing to
BS5950 Staircases / platforms Building frames Canopies
Modular construction
Concrete element design and detailing to BS8110
Pre-cast Flooring Fire panels
Civil design
Foundations and retaining walls (BS8004) Reinforced concrete (BS8110)
Envelope (BS5628)
Crane and lifting equipment design and
assessment to BS2573 / BS EN 13001
Case Studies UKAE Harwell - design and build
of a retrieval machine.
Conceptual Design
Detail design for manufacture.
Procurement, systems
interrogation inactive
commissioning.
Rolls-Royce Submarines -
fuelling/ defueling equipment.
Technology development
Concept design
System Integration
Mechanical seismic
verification and
substantiation.
British Energy - design and
build of graphite sampling
machine.
Technology development
Conceptual & detail design
Procurement construction &
commissioning
Nuclear industry - boiler lift rig
Strength and limit load
checks
Seismic substantiation
BS2573
Nuclear industry - impact
analysis of storage flask
Concurrent design &
substantiation
Explicit dynamic
Analysis Capabilities:
Static, linear / non linear FEA (ANSYS,
NASTRAN, ABAQUS)
Dynamic / impact (Dyna, RADIOSS,
ABAQUS)
Thermal transient analysis
Design optimisation (OPTISTRUCT, ANSYS,
ABAQUS)
Robustness Studies (HyperStudy, DoE)
Fatigue assessment
Pressure vessel assessment:
ASME III, ASME VIII, TEMA, ASME/ANSI B31)
PD5500, EN13445, BS806
Fracture assessment (including Rcode and
BS7910)
Nuclear Industry - cracked
body analysis.
Cracked body analysis
BS7910/R6 code checks
Mechanical Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem UK Energy & Nuclear offers a world class mechanical engineering design service utilising a broad base of in-house skills relevant to the world energy market. Specialist knowledge developed over 40 years across a multi disciplined team, allows Assystem UK Energy & Nuclear to be a “one stop shop” for the delivery of cost effective technical solutions to clients for all phases of the project life cycle.
Assystem UK Energy & Nuclear has proven expertise in the following:
Optioneering and feasibility studies
Front-end concept design
Detail design and the production of manufacturing drawings Design substantiation, Independent Technical Assessment, O&M manuals
Manufacture and Development of Special Purpose Equipment
Mechanical handling
Strategic planning
Project Management
Risk Analysis, FMECA, ARM, HAZOP, HAZID
Procurement, Inspection and Expediting
Research and development
Compliance with EU directives, CDM regulations, relevant safety codes and standards Installation and commissioning
Product design and development
Building, plant and equipment surveys
Projects can typically range from the provision of ‘front-end’ designs for new concept machinery, to the assembly and development of bespoke mechanisms and equipment to clients’ individual specifications. For all projects, the company operates a Quality Assurance system to ISO 9001:2008, which is certified externally by the British Standards Institution, in addition to any other project-specific requirements.
Assystem UK Energy & Nuclear’s design and problem solving ability is backed by comprehensive technical analytical support such as:
2D/3D CAD Drawing and modelling (AutoCAD, Pro E, Inventor,
SolidWorks, Catia)
FE Stress analysis (thermal, static, dynamic)
Seismic analysis – equipment and buildings
Systems engineers, computer specialists, electronic engineers and
electrical/ instrument engineers
3D Simulation
Project planning using Microsoft Project and Primavera
Mechanical Engineering Services
Mechanical Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Remote engineering; robotics, manipulators, remote viewing, shield doors, through-wall drives
Mechanical handling including bogies, conveyors, cranes
Mechanical equipment including compactors, powder processing, fuel fabrication & assembly
Wet process equipment engineering including vessels, piping, pumps, heat exchangers and other process plant and installation
Nuclear transport equipment including flasks, containers
Nuclear containment & ventilation including ventilation systems, fans, heating, ducting, filters
Services including steam, gases, water, electrical, fire protection, security etc.
Alpha plant engineering & equipment including gloveboxes
Engineering substantiation, technical assessment of equipment capability and justification of adequacy;
FMEA & ARM
Process plant including encapsulation
Safety case – support and supervision
Typical Equipment & Processes
Case Studies
Synchrotron – DLS
Assystem UK has been closely involved in the design of the Diamond Light Source Synchrotron - the largest science facility to be funded in the UK for over 30 years and costing £350m. Assystem UK’s team of up to 25 engineers have been responsible for the design of many of the high precision mechanisms and support systems associated with the accelerator.
AGR Graphite Sampling System – British Energy (Barnwood)
Assystem UK designed and supplied a graphite sampling system for deployment inside the fuel channels of AGR reactors. The equipment incorporated a remote trepanning tool, precision tool alignment mechanisms, sample conveying system and a CCTV and operator control system.
Nuclear waste retrieval machine – UKAEA
Assystem UK designed and developed a waste retrieval facility for the removal of intermediate level waste canisters from the B462.9 tube store at UKAEA Harwell. The innovative design consists of a 3 cubic metre 220 ton shielded containment enclosing a retrieval hoist, grabs and a waste export system.
Control, Electrical and Instrumentation
Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Capability Scope
Our capabilities cover a broad range of the C,E&I spectrum. These include:
Control
Embedded real-time systems
SCADA and data-logging
Networks
PLC systems
Operator interfaces and HMIs
Safety system design and
substantiation.
Bespoke electronics
Electrical
Site surveys
Cabling design
Site installation
Building services including
lighting, earthing, and power
distribution
Instrumentation
In-line testing
Radiometrics
Process
instrumentation
Our substantial Electrical, Control and Instrumentation (C,E&I) capabilities range from initial concept development through design, in-house assembly, installation, commissioning and through-life maintenance support.
Control, Electrical & Instrumentation
Assystem UK Energy and Nuclear has in-house systems engineers, computer specialists, electronic engineers and electrical/ instrument engineers whose combined experience can be used to complete the most demanding of projects. This includes complex safety critical control systems or nuclear applications enabling us to provide complete and fully integrated solutions.
Furthermore, our C,E&I engineers are highly experienced in working alongside other engineering disciplines to provide a total system integration capability.
Control, Electrical and Instrumentation
Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem have extensive experience in the design and substantiation of Safety Instrumented Systems and are familiar with the requirements of IEC61508 and IEC61511. A number of our engineers have undergone training in Sellafield Sites Ltd engineering guide for safety systems, EG90, and have also successfully completed other customer specific but broadly applicable training in the realisation and documentation of Safety Systems.
Our engineers are experienced in the use of a wide variety of tools and applications for the design and
development of software and hardware systems. We have a number of engineers with extensive
experience in the development of PLC systems, under IEC61131 and various customer specific
standards, for a variety of PLC platforms including Rockwell / Allen Bradley SLC series and Siemens S7.
We also have experience with older systems such as Allen Bradley PLC5 giving us the capability to
reverse engineer legacy systems in order to upgrade or replace them.
‘Reliability Workbench’ with ‘Fault Tree Plus’ are used for the design and validation of Safety Systems and
several of our engineers are trained and experienced in its use. Rapid development of test systems and
less critical control systems is undertaken using National Instruments LabView for which we have a full
development environment with many of the popular control and instrumentation sub-packages. We have
several engineers experienced with the use of real time operating environments such as VxWorks and
their application in the realisation of embedded real time systems.
Designs and drawings are produced using AutoCAD electrical which allows us to use a component based
approach to the creation of schematic diagrams and panel designs. Amtech is used for undertaking and
checking cable calculations.
All of our engineers are accustomed to being required to use a myriad of other proprietary and bespoke
packages as necessary to satisfy the requirements of specific projects. These include design tools,
software development systems and modelling packages.
Hardware Design: Overall Systems Integration - High Integrity Protection Control Systems - Safety Instrumented Systems - Robotics & Remote Handling - Bespoke Electronics - MCC & Panel Design & Wiring - HVDC - Cable Design - Building Management Systems - Industrial Networking - Process Instrumentation - Power Distribution. Software Design: PLC - Embedded Systems - SCADA & HMI Design and Testing.
Toolsets
Safety Engineering
Engineering Services Include:
Finite Element Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Finite element analysis is carried out as a bespoke service and also as part of larger projects. On larger projects design and analysis engineers work within the same office and develop the designs concurrently.
FEA Capabilities
Static, linear / non-linear analysis
Dynamic / impact analysis
Thermal transient analysis
Design optimisation
Robustness studies
Computational Fluid Dynamics (CFD)
DoE & response surface modelling
Fatigue assessment
Pressure vessel assessment
Fracture assessment
Seismic assessment and analysis
Hyperelastic material (e.g. rubber) simulation
Process simulation (e.g. pipe bending /
straightening)
Finite Element Analysis
Finite Element Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Case Study: Flask Impact Design Substantiation
To support and substantiate the design of a nuclear storage flask and internal assembly, dynamic impact analysis was performed by Assystem UK to show that the ability of the container to safely hold its contents would not be comprised through any impact that could occur through being dropped during transit.
The flask has been designed to provide a safe method of containment for nuclear material. The flasks are to be kept in a storage facility where drop scenarios are possible. Two drop heights were analysed, each with nine different drop orientations (see example, bottom right).
The FEA mesh of the flask components was generated using Altair Hypermesh and analysed using RADIOSS v.4.4u, both of which are part of the Altair Hyperworks suite.
The study identified five different possible failure modes, each of which was investigated for both drop heights and all drop orientations. The mode of most concern was the failure of the dynamic sealing of the flask. This involves the seals being momentarily misaligned during impact and allowing the escape of a limited, but dangerous, amount of gas.
The substantiation showed that, with the design and drop heights specified, the ability of the flask to hold its contents would not be compromised. This design was physically tested at the Assystem UK workshop facility, and all tests were in agreement with the above analysis.
Fracture Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Fracture analysis is carried out as a bespoke service and also as part of larger projects within the Energy and Nuclear division of Assystem UK Limited. Our analysis capabilities can be accessed at National or local levels via our network of 10 UK service centres.
Assystem can perform R6 Procedure structural integrity assessments on structural components containing
defects.
Fracture Analysis
Using R-CODE Assystem can define and subsequently assess geometry specific solutions.
Un-cracked and cracked finite element analysis models are used to generate crack opening stresses and SIFs. Modification of geometry codes undertaken to account for specific geometry (SIF solution modified using FEA results). Geometry code sensitivity is undertaken for each assessment.
Defects: (NDE, postulated, maximum reasonably foreseeable Virgin
Defects assumed in attachment welds.
Cracked geometry
Un-cracked geometry
Critical flaw size calculations (calculates maximum defect size and proximity to brittle / plastic collapse). Assystem can determine the limiting start of life defect size that would grow to the limiting critical flaw size during the assumed operational life from which acceptance criteria (targets based on material toughness) are specified.
Fatigue Crack Growth made under known cyclic loading
General Failure Assessment Diagram Start of Life Defect Vs. End of Life Defect
Defect (mm)
Maximum
K (MPam)
Minimum K
(MPam)
0.5 8.0 -21.2
1.0 9.1 -23.2
1.5 9.4 -23.5
4.0 7.8 -18.1
Fracture Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Presentation of Margins of Safety
Fracture margins based on material fracture toughness with respect to operational temperatures (including transition regions). These calculations account for crack tip plasticity and allow safe operating temperatures to be identified
Cracked body analysis can be carried out for assessments against the Failure Assessment Diagrams (FAD). Finite element analysis is used to determine the Kr (J-integral) and Limit Load Analysis to determine Lr.
Pressure vessel design and assessment to all major codes (ASME III / VIII, PD5500, EN13445 etc.) Primary circuit and secondary side components (eg steam generators, regenerative heat exchangers).
Design and hydrotest conditions and Level A (fatigue) operation. Recent assessments moving towards strain predictions and away from stress linearisation (or planarisation).
Fatigue life evaluation (or re- evaluation based on measured transient blackbox information) carried out in accordance with design codes (eg ASME III) or using modern stress-life and strain-life techniques.
A key aspect in plant operation is life extension (aging plant or extension of existing Safety Justifications) therefore knowledge of pessimisms in fatigue calculation is vitally important.
Fatigue evaluation can be carried out elastically in accordance with design rule codes, or optionally, elasto-plastically to check for shakedown as well as provide strain ranges for strain-based fatigue calculation. Non-linear material models (e.g. nonlinear kinematic plasticity) used in assessment with life-cycle loading applied.
Public domain RPV
Civil Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem is a leading international group providing Engineering and Consultancy services across a broad
range of product manufacturing and process sectors including Aerospace, Automotive, Defence, Energy,
Life Sciences, Naval and Nuclear industries.
Within these industries, Assystem have delivered civil engineering services in conjunction with other
aspects of the projects. We have a dedicated civil engineering team; capable of interacting with the
customer at all levels.
Our civil engineering capabilities can be accessed at national or local levels via our network of 10 UK
service centres.
Market Sectors
Defence
Civil Nuclear
Health / Education / Residential
Industrial / Commercial / Retail
Safety
CDM 2007
Safety case
Risk assessments
Method statements
Continued Operational Safety Reports
(COSR)
HAZOP/HAZCON
Building Structural Design (Design/Analysis and Detail)
Sub Structure
Piled/pad foundations (BS 8004) Basements
Retaining Walls (BS 8002)
Super Structure
Steel frame (BS 5950) Reinforced concrete (BS 8110) Composite
Envelope
Masonry (BS 5628) Cold rolled cladding
Concrete panels
Civil Engineering Services
Civil Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Structural Elements
Design and Detailing
Steelwork (BS 5950 / BS EN 1993)
Mezzanines Staircases/ platforms Pipe bridges/plant support Connections Modular Construction
Concrete (BS 8110 / ACI 318M)
Pre cast foundations, including retaining walls
Fire panels Flooring systems Industrial floor slabs Culverts/ bridges (BS 5400)
Survey / Structural Assessments
Topographical surveys/Desktop studies
Condition/Refurbishment/Modification
Civil / Nuclear Decommissioning
Impact Assessment
Construction Documentation
Building Control Submissions
Basis of Designs
Design Method Statements
Design Justifications Reports
Software
By utilising Assystem’s internal resource together with strategic partners, projects can delivered to clients
using a wide variety of design and analysis software seamlessly integrating with existing customer IT
infrastructure.
Nuclear Process Piping Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem is a leading international group providing Engineering and Consultancy services across a broad
range of product manufacturing and process sectors.
Nuclear Process Piping is carried out as a bespoke service and also as part of larger projects. On larger
projects design and analysis engineers work within the same office and develop the designs concurrently.
Our engineering capabilities can be accessed at national or local levels via our network of 10 UK service
centres.
Nuclear Process Piping
PSA5
Piping Capabilities
In-House Software
Flow Calculations
Fluidflow
Flowmaster
Design
AutoCAD P&ID
AutoCAD Plant 3d
Pipe Stress
Caesar II
Bentley AutoPIP (ADLPipe)
Whessoe PSA5
Front End Piping Design
P&IDs
EFDs
Detailed piping design
Pipe support design
Piping isometrics
Flow calculations
Pipe flow analysis
Pipe stress analysis
Fatigue analysis
Pressure vessel assessment
Seismic assessment and analysis
Process simulation (e.g. pipe bending / straightening)
HAZOP Studies
Nuclear Process Piping Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem has a wide ranging background of process piping experience with many examples in the Nuclear sector. CRTF Rig – Raynesway Engineering Laboratory
Full design of a rig to provide hot and pressurised water to two test vessels. Assystem’s scope includes the front end initial design, development of final design, detailed drawings, P&ID’s, flow calculations and analysis, stress analysis, equipment and piping support, flexibility analysis, HAZOP Studies and piping isometrics. Wylfa Power Station - AETP Discharge Pipeline
Complete design and analysis for a replacement AETP discharge pipeline. Assystem’s scope of supply included site surveys, design of pipes and supports, detail drawings, fabrication drawings, structural and stress analysis of pipes and supports, design of secondary containment system and leak detection system. Hunterston ‘A’ Decommissioning Site – Modifications to AETP
Design, manufacture, installation and commissioning of a replacement delay tank and ancillary systems and pipework. Assystem’s scope of supply included design of pipes and supports, relocation of existing equipment, detail drawings, fabrication drawings, structural and stress analysis of pipes and supports, tank design and substantiation, design of secondary containment system and leak detection system. Trawsfynydd Fire Pump System – Improvements to meet Regulations
Design and analysis of new fire pump system to improve existing system. Extensions of existing lines couples with new higher spec pumps to allow fire system to meet regulations. Assystem’s scope of supply included flow calculations, pump selection, pump installation, flow analysis, pipework design, pipework detailing, pipe supports and stress analysis.
Case Studies
Safety Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem is a leading international group providing Engineering solutions across a broad range of product
design development life cycle stages including Aerospace, Automotive, Defence, Energy, Life Sciences,
Petro-chemical/Oil & Gas, Naval and Nuclear industries.
Assystem have a dedicated energy and nuclear safety engineering team capable of providing a full suite
of safety engineering services to all stages of a project life cycle.
Safety Engineering Services
Safety Management Systems
Conventional and nuclear safety analysis
Risk Management
Human Factors Analysis
Safety, HF and ARM training
Operation / Safe Systems of Work
Analysis and derivation of product availability,
reliability, maintainability and supportability
requirements
Decommissioning and disposal
Assystem Safety Management Systems capability includes:
Services
The supply of safety services to Customer
requirements, including the role of Independent
Safety Assessor / Auditor
Design, development & implementation of
Project Safety Management Systems
Production and delivery of Product Safety Case
documentation
Safety Engineering Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Safety Case
Assystem have the software capability to carry out safety assessments. The software can perform techniques such as HAZOP, HAZID, HAZAN, FTA and ETA. PHAST software can be used for material release and consequence analysis
Production of Safety Case documentation provides a record of the decision-making process. Assystem will provide a full range of Safety Case documentation including:
Risk Assessment, risk reduction, cost benefit analysis and risk
acceptance to ALARP criteria
Safety Standards and Strategy Development
Physical and Functional Safety Assessments using the following
techniques: Hazard and Operability Studies (HAZOP) Hazard Identification (HAZID) and Hazard Analysis (HAZAN) Failure Modes and Effects Analysis (FMEA) Failure Modes Effects & Criticality Analysis (FMECA) Fault Tree Analysis (FTA) Event Tree Analysis (ETA)
Safety Engineering Services:
Hazardous Area Classification Consequence assessments/hazardous material releases Fire safety assessment Chemical safety/occupational health risk assessment Explosion analysis Confined spaces risk assessment General risk assessment CDM design risk assessment Safety Integrity Level determination (Functional Safety – 61508/61511) Safety inspections/surveys Gap analysis/auditing of safety management systems. Pressure systems ‘Written Schemes of Examination’ Pressure systems safety advice Pressure Equipment Directive
Software
Quality
All Assystem UK sites are certified to BS EN ISO 9001:2008.
Cert No. FM23790
Seismic Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Seismic analysis is carried out as a bespoke service and also as part of larger projects within the Energy and Nuclear division of the company. Our civil engineering capabilities can be accessed at national or local levels via our network of 10 UK service centres.
Seismic substantiation performed using the following methods:
Static equivalent method
Response spectra method
Time history method
Stress analysis performed using hand calculation methods
(MATHCAD) and finite element analysis
(ANSYS, ABAQUS & LS-DYNA)
Code checks performed to BS 2573, BS 5950 and ASME III Level D
Generation of artificial acceleration time histories (SIMQKE) for given response spectra
Generation of secondary response spectra for given time earthquake time history data
Seismic Analysis Services
Quality
Seismic Assessment Capabilities
All sites are certified to BS EN ISO 9001:2008 for design and manufacture. The quality management system is managed from head office and also by quality managers within each facility.
Component parts
Cranes/Lifting equipment, Mechanical structures
Structural steelwork, Buildings
Typical Structures Analysed
Seismic Analysis Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
In support of the Design Substantiation Report (DSR) produced by Sellafield Ltd., Assystem provided the as-built seismic design substantiation of the In-Cell Cranes and their rail systems for WVP REF. At the time, the equipment was already installed and undergoing final commissioning but a robust seismic substantiation from the design stage was lacking. The substantiation was based on a response spectrum analysis of beam element F.E. models of structures. These gave forces and moments within structures from which code assessment of structural members were made using spreadsheets whilst local design details were assessed by hand calculations using Mathcad. The main body of the report reflected the DSR content whilst the supporting detail was placed in appendices; this enabled Sellafield Ltd. to quickly transfer the required information into the DSR. Substantiation required demonstration of the ability to meet a number of System Functional Requirements against the Design Basis Earthquake (DBE) loading with a further demonstration of margins against cliff edge effects, the Margins Earthquake (1.4 times DBE). This was achieved by demonstrating that the design maintained an elastic and ductile response under the DBE, using a code based assessment, with a performance based assessment to provide confidence against cliff edge effects. The assessment was based on a demonstration of an understanding of the ultimate failure modes of the structure, taking into account:
Redundancy or alternate load paths
Ultimate capacity of components
Reduced loading due to increased damping
A significant part of this demonstration was achieved based on the reserves demonstrated against the DBE loading; where this could not provide the required confidence then an assessment was made using one of the following:
Reasoned argument (simple or in depth) with no further analysis
Additional simple analysis
Additional in depth analysis
Although the assessment raised a number of technical challenges it was completed successfully; the report was accepted with only a small number of minor comments.
Case Study: Waste Vitrification Process (WVP)
Including details of Residue Export Facility (REF), In-Cell Cranes and Seismic De-sign Substantiation
Overhead Jib crane
Marine Hydrodynamics Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Assystem is a leading international group providing Engineering and Consultancy services across a broad range of product manufacturing and process sectors.
Marine hydrodynamics analysis is carried out as a bespoke service and also as part of larger projects.
Our engineering capabilities can be accessed at national or local levels via our network of 10 UK service centres.
Marine Hydrodynamic Services
Capabilities
Marine hydrodynamic analysis performed using the following approaches:
OrcaFlex Abaqus Aqua Simulink & SimMechanics Probability & Monte Carlo analyses Hand calculations
Marine hydrodynamic and wave physics expertise
Mathematical modelling and time-domain simulation
Physical modelling, prototyping and testing methodology
Wave analysis for specific marine locations to accurately
describe extreme events, and normal conditions to support design specification
Vessel motion analysis: RAO’s are used to convert
wave analysis into vessel motion analysis, for any position on a vessel. Vessel and wave motion analyses replace pessimistic rules of thumb and unnecessary safety factors and feed into engineering design specification eliminating over-engineering and the associated costs and difficulties it brings. The above capabilities can add value to projects in many areas of offshore engineering. Assystem UK has in-house experience in consulting and working within; offshore oil & gas, submarine telecoms, marine defence, offshore wind, wave power generation and tidal power generation projects.
Marine Hydrodynamics Capability
ENERGY & NUCLEAR Assystem UK Ltd | Club Street | Bamber Bridge | PRESTON | PR5 6FN | UK Tel.: +44 (0)1772 645 000 | Fax: +44 (0)1772 645 001 E&[email protected] More information at www.assystem.com FM 23790
Case Study: Vessel Motion Analysis
Offshore equipment must be designed to withstand, or exploit, the forces and motions that are experienced as a result of the waves and associated vessel motions. Vessel motion analysis acts to provide a more complete understanding of what these forces and motions will be under normal circumstances, and what extreme occurrences could be expected, and how often. This understanding supports Lloyd’s and DNV codes and can feed straight into design reviews giving engineers the confidence to choose more optimised designs or highlight potential issues to them. Thus cost is saved through the reduction of over-engineering and time is saved through the reduction of design iterations. It is most effective to use this approach as close to the concept design phase as possible. The sample graphs below show common output types from vessel motion analysis. The upper graph shows the probability distribution for exceeding a maximum surge acceleration within a specified time window for a given position on a vessel. The lower graph shows what proportion of time is spent in excess of a given resultant acceleration for a given position on a vessel. In the examples shown the analysis was performed for given significant wave height values. All sea-states of that height which occur at the location of interest were analysed, and the individual probabilities combined and weighted appropriately to give a complete analysis for the wave heights of interest at the location of interest. The analysis shown below is specific to one example, but similar analysis can be tailored to customer needs. It is common to perform similar analysis for resultant and component velocities and positions, as well as accelerations. In addition, analysis can be performed for water motions or wave forces acting on subsea equipment.