John Brear – Plant Integrity
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Plant integrity
Key questions for plant integrity assessment
Design and materials evaluation
Fitness for service
Remaining life prediction
Life extension, performance optimisation
Safety, risk and reliability
Failure analysis and problem solving
Phased approach to plant integrity assessment
Industries
Power Generation
Boilers
Phase 1 boiler life assessment
On-line life monitoring of headers and tubes
Temperature imbalance in a superheater header
Type IV cracking in a P91 header
Ligament cracking in a 13CrMo44 superheater header
Header modification for repair
Fibre-optic temperature monitoring of a steam mixer
Waterwall tube failures
Life and maintenance optimisation of reheater tubes
Superheater and reheater tube life prediction
Tube Life Assessment
Assessment of defects in flue-gas ducts
Steam pipework
Life management of seam-welded pipework
Elimination of reheat cracking
Fibre-optic monitoring of steam pipework temperatures
Susceptibility of P91 and P92 pipework to Type IV cracking
Steam turbines
Life extension by re-engineering
Assessment of defects in a welded HP rotor
A strategic turbine life assessment
HP rotor and casing cracks
Determining the cause of defects in IP shrouds
Damage caused by a power interruption
Failures of steam turbine blades
Bolt failures – root cause analysis and remediation
Combined cycle and gas-turbine plant
Cracking of a gas turbine to HRSG transition piece
Failure analysis and re-design of a boiler casing
Remediation of a vibration problem
Integrity and life assessment of a shared header
Life assessment for cyclic operation
Evaluation of a change in GT blade material
Probabilistic life assessment of GT vanes
Electrical equipment
Damage to a hydro-electric generator under test
Alternator end-bell renovation
Mechanical reliability of a transformer
Damage to a hydro-electric generator
Reliability-centred maintenance of 11KV switchgear
Nuclear plant
Defects in Magnox gas-circuit baffles
Tie-bars for Magnox Gas-Circuit bellows
Reheat cracking in AGR boiler components
AGR fuelling machine pipework
Fuel particles for AGR and Generation IV
Seismic qualification of PWR components
Residual element limits for PWR pressure vessels
Stress relief of PWR pressure vessel welds
Behaviour of defects under LOCA conditions
Microwave windows for a fusion reactor
Effects of a fire on a nuclear fuel transport flask
Drop testing of fuel transport flasks
Pressure limits for fuel storage cans
Petrochemical and refining plant
Risk-based assessments
A refinery-wide risk-based inspection and life assessment
RBI at the design stage
Risk-based inspection planning for pipework
Extended inspection intervals for a hydrogen shift reactor
Rationalising risk limits
Pressure vessels and piping
Defects in a Platformer vessel
Life extension by weld-repair
Defect assessment without data
Models for predicting hydrogen attack
Blind flange design modification
Fired heaters
Probabilistic life assessment of fired heater tubes
The effect of carburisation on heater tube life
Crude heater life and performance optimisation
Debottlenecking options for a CDU furnace
Failure of an HK40 heater support system
Fitness for service of fire-damaged headers
Life assessment of visbreaker tubes
Coke drums
Materials properties for drum life assessment
Probabilistic life assessment of coke drums
Steam-methane reformers
Reformer tube life prediction after dry firing
Pipelines, tanks and gas-treatment plant
Other industries
Cleaning a decant / thickener tank – design and safety issues
Mounting system for a 2.8 ton hydraulic arm on a blow off tank
Insurance, Arbitration & Litigation
Intellectual property issues
R&D
Current Projects
Remaining life of austenitic steels
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John M Brear
John Williamson
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John Williamson – publications
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