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Process safety is a key area in the upstream and downstream oil and gas industries. Prevention of loss of containment or equipment damage is critical given the outage and capital costs, and the escalation consequences of loss of containment.
There is no standard definition of process safety in the industry. Xodus sees process safety as being all of the elements of a process plant aimed at avoiding adverse deviations that could create equipment damage or loss of containment. We consider process safety to be a key element of the fault tree side of bow tie analysis. Working with mature assets we help to manage process integrity and process safety.
For new field developments we provide assurance that process safety requirements are delivered. Overall process safety is achieved by having well designed plant, clearly defined procedures and competent people all working effectively.
Process integrity information we deliver › Basis of design › Process safeguarding design philosophies › Process safeguarding flow schemes › As-built Piping and Instrumentation
Diagrams (P&IDs) › As-built cause and effects › Alarm and trip schedules › Loop diagrams
› Line lists › Safe operating envelopes › Operating procedures › Alarm response procedures › Process emergency response procedures › Process models › Process calculations › High-Integrity Pressure Protection System
(HIPPS) dossier
› Register of safety related devices › Locked Open / Locked Closed (LO / LC)
registers › Hazardous / non-hazardous
systems review › Equipment data sheets › Relief and blowdown review › Containment performance standards
and verification schemes.
www.xodusgroup.com
Process Safety Xodus Group provides world-leading consultancy support, ranging from individual studies to a fully integrated process safety assurance service.
Process safety
Fault tree side Event tree side
Corrosion management
Maintenance and inspection
Escalation and recovery
Permit to work etc.
Bow tie analysis
Major
event failure
Process safety is a critical preventive element of oil and gas plant major hazard management
All elements must be working well to deliver process safety
Design integrity
Operatingprocedures
Competenceassurance
10641 October 2014
We undertake: › Critical assurance activities › HP / LP interface review › Hazard Operability (HAZOP)
/ process hazard analysis › Design review / variance
analysis › Layers of Protection
Analysis (LOPA) › Safety Integrity Level (SIL)
assessment › Test interval analysis › HIPPS formal safety
assessments › Safeguarding reliability
analysis / Quantitative Risk Assessment (QRA)
› BS / EN / 61511 management of functional safety
› Verification of process containment safety critical elements
› Alarm prioritisation review › Human factors review › Process safety audit › Commissioning and function
testing / benchmarking.
Critical support processes › Management of change › Competence assurance › Process simulator
development › Operator response training.
For more information contact:Colin McWhirr . Technical Safety & Risk (TSR) Technical Authority . [email protected] . +44 1224 628310Neil Smith . Global Process and Facilities Lead . [email protected] . +44 1224 628309
www.xodusgroup.com
Process safety is only one critical element of overall major accident hazard management
Mechanical / other safeguarding
Process envelope mechanical integrity
Process envelope, process integrity = process safety
Corrosion managementsystem
Fire, explosion and toxicrelease management
Emergency responsearrangements
Prevent loss of containment equipment damage Control and recovery from loss of containment
Instrumented safeguarding Alarm response Operator interface Process control Design envelope
Dynamic simulation
Interlocks and LO / LC
Other noninstrumented safeguarding devices
Trip systems PCS / ESD / TPS / HIPPS system
Relief valves
Inherent safety
Process simulation / model
Competence assurance
Control loops and tuning set points
P&IDs / line lists / data sheets
Operating procedures
Alarm response procedures
Process safety layersof protection – ‘bullseye’
