Selected single client projects carried out for the downstream sector of the Oil, Gas and Chemicals industries

Safety, reliability and inspection
Consultancy support and failure investigations
Design, fabrication and repair

Safety, reliability and inspection

• Analysis of socket welds
• Ultrasonic survey of LPG spheres
• Investigation of failure of a condensate liquid feed line
• Hot tapping on a steam line
• Reassessment of feed gas separator vessels for operation at -26°C
• ECA of large 25% Cr duplex casting
• Life extension of a FCCU
• Reassessment of process vessel heating coils
• Condition assessment and fitness for purpose of hot gas path turbine components
• ECA of propane storage spheres
• Structural integrity of ammonia storage tanks
• Teletest ^® long range UT of road crossings
• Tank integrity inspection
• Teletest ^® long range UT of heavy oil fuel line
• Teletest ^® long range UT of piping at a tank farm
• Finite element modelling of polypropylene reactors
• Cyclic pressure tests of heat exchanger
• P-Scan inspection of steam boiler drum
• On stream inspection of copper-clad reactor vessel
• On-line monitoring of hydro-cracker welds
• Assessment of aluminium cryogenic vessel
• Assessment of LNG tanks during seismic event
• On-stream inspection of hydrocracker vessel
• Fatigue assessment of plant reactor coils
• Structural integrity of butane sphere
• Strain monitoring on butane splitter vessel
• High temperature ultrasonic time of flight testing of vessels in service at two refineries
• NDT for mercury cracking in cryogenic plant
• Structural integrity of propane storage sphere
• Assessment of ethylene storage tank
• Significance of defects in ethylene plant vessels under cold blow down conditions
• Automatic ultrasonic examination of cracking in ammonia spheres
• Finite element analysis of ammonia spheres
• Assessment of depropaniser reflux accumulator vessel
• Assessment of corrosion grooves in pressure vessel
• Significance of defects in tank shell to floor welds
• Assessment of acetic acid reactor
• Low temperature qualification of demethaniser tower
• Fitness for purpose of a cracked heat exchanger
• Advice on NDT of welds in Inconel tubes
• Tests on welds in a storage sphere
• Fitness for purpose of storage vessel
• Significance of defects in nozzle welds

Consultancy support and failure investigations

• Investigation of a hairpin tube section of reformer unit
• Investigation of corroded B2 pipe fittings in HCl service
• ECA assessment of amine stripper pressure vessels
• Failure investigation in type UNS S31803 duplex stainless steel welds - review of documentation
• Investigation and time to failure assessment of boiler tube failure
• Failure investigation on a pipe to flange welded component from a water condensation austenitic pipeline
• Fracture toughness testing of 9%Ni steel weldments
• Corrosion testing of Titanium grade 12 tubes in 2% HCI
• Examination of failed tubes from fired heater convection section
• Feasibility of lining steel pipeline
• Positive material identification exercise on refinery pipework
• Failure in MTBE plant
• Failure of boiler water tubes
• Failure of alloy 625 heat exchanger
• Corrosion of 9%Ni steel for LNG plant
• In situ replication at a refinery
• Cracking of dissimilar metal joint in reformer tube
• Failure of bellows in naphtha stabiliser
• Hydrotesting 9%Ni steel tanks
• Failure of GRE pipe elbows
• Failure of molecular sieve
• Creep in 1¼ Cr steel
• Ceramic coatings for petrochemical applications
• HIC cracking in glycol dehydration towers
• Consultancy on heat exchanger failure
• Austenitic SS cladding in high temperature hydrogen services
• Advice on plastics pipe material for chemical plant
• Cause of cracking in an oxygen analyser connection
• Failure investigation of superheater tubes
• Consultancy on LNG train
• Examination of a failed spectacle blind
• Failure investigation on PVC pipework
• Cracking in a catalytic converter
• Failure of a coke drum
• Examination of failed superheater support brackets
• Hydrogen induced disbonding of weld overlay
• Consultancy on ethylene storage tank
• Failure of a stainless steel heater
• Cracking in an ethylene drum
• Site examination of a cracked heat exchanger
• Examination of cracked fuel hydrant
• Examination of cracked flanges
• Failure of end cover on a reboiler
• Significance of surface breaking cracks in LPG spheres
• Creep in a powerformer furnace
• Examination of pipework for graphitisation
• Failure analysis of a valve spindle
• Cracking in economiser heater tubes
• Examination of failed piston rod from a compressor unit
• Cracking in flare tower
• Cause of cracking in an ammonia heat exchanger
• Cracking after hydrogen exposure
• Cracking in depropaniser reboiler
• Examination of securing nuts from turbine casing
• Examination of superheater pipework
• Failure analysis of a titanium plate heat exchanger
• Cracking in hydrotreater reactor
• Fatigue of chemical mixer shaft
• Failure analysis of a unifining debutaniser receiver vessel
• Cracking in LP steam line
• Cracking in a cryofit coupling
• Investigation of failure of a flare stack
• Examination of cracked hydrocracker
• Failure analysis of vessel in a gas liquefaction plant
• Examination of heat exchanger shells
• Failure of mono ethonolamine absorber vessel in Union Oil's Chicago refinery
• Failure of LNG tank floor
• Cracks in LPG spheres
• Failure analysis of a bubble tower
• Examination of a heat exchanger nozzle
• Examination of a boiler header nozzle
• Advice on repair to an LPG tank
• Corrosion of LNG tank
• Hot tapping for a butane tank
• Stress analysis of floating tank roof
• Brittle fracture in an ammonia plant
• Stress analysis of spherical pressure vessel
• Investigation of fractured ammonia converter

Design, fabrication and repair

• Property investigation of ASTM A53 Grade B ASTM A333 Grade 6 and ASTM A106 Grade B seamless pipes
• A computerised fabrication management system
• Linear friction welding of thermoplastic gas pipe
• Evaluation of disbonding susceptibility for hydrocrackers
• Linear friction welding of thermoplastic gas pipe
• Polymer-ceramic hybrid coating for enhanced corrosion protection
• High-productivity welding of polyethylene gas pipe
• Advice on welding of ozone generators
• Repair of ammonia plant
• Consultancy on tube to tube-plate welding
• Advice on repair to a refrigerator vessel
• Consultancy on welding of heat exchanger assemblies
• Consultancy on strip overlaying for hydrocracker
• Welding trials for an oxy-chlorinator
• Advice on repair welding of tube bundles