David Keen is a Metallurgist with
over 45 years domestic and international experience in fertilizer and
explosives manufacturing facilities across 12 countries globally. These
facilities include Ammonia, Urea, Nitric Acid, Sulphuric Acid, Phosphoric Acid,
Ammonium Nitrate, Fertilizer plants and Steam Generation utilities. David is a
Subject Matter Expert (SME) on equipment integrity management and has in recent
years downloaded this knowledge into a series of training modules focused on
preventing equipment failures through experiential learning and team problem
solving sessions.
He has held various positions including Company Chief
Engineer, VP Reliability & Risk, Company Engineer Fixed Equipment,
Operations Manager, Maintenance Manager, T/A Manager and Plant Metallurgist.
David also worked as a consultant to ammonia and downstream facilities in
Australia, New Zealand, SE Asia, Canada, United States and South America. This
work included:
·
Qualitative
risk-based assessments on > 50 process plants
·
Quantitative
analyses & fitness for service assessments
·
Facilitating
the completion of plant reliability assessments on 14 process plants
·
Condition
assessment, remnant life studies on:
·
Hydrogen
reformers, waste heat boilers, cooling water exchangers, synthesis loop
converters, waste heat boilers & superheaters.
·
Failure
investigations in such areas as:
-
o
High
temperature hydrogen attack & hydrogen embrittlement of vessels and piping
-
o
Stress
relaxation cracking in alloy steels, stainless steels, Incoloys & Inconels
-
o
Creep
& creep-fatigue; reformer components, boilers & so on.
-
o
Waste
heat boilers and Superheaters
-
o
Stress
corrosion cracking of duplex stainless steels in hot cooling water service
& in low pH acid service
-
o
Corrosion
failures of equipment in nitric acid, sulfuric acid & phosphoric acid
service
-
o
CO2
corrosion & amine stress corrosion cracking in amine systems
·
Auditing
the manufacturing performance of plant, with particular focus on:
-
o
Critical
controls management, including process controls, design / construction controls
& inspection practices
o
risk
management of critical plant
-
o
shutdown
/ turnaround management
-
o
root
cause analysis and failure investigation