Process Safety×Engineering
Engineering in Design Integrity
Create the barriers
What sits here
Barriers against a major accident are identified, specified and built to be fit for purpose from the outset. Hazards are identified, risk is reduced as low as reasonably practicable, and each barrier is given a performance standard it must meet for the rest of its life. Change to plant or wells goes back through the same discipline.
Example documents, by tier
Standard 6
- Design Authority ArrangementsRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 03 Responsibility of senior management for the management systemAlso in ONR Licence Conditions · Management systemsNot safety case baseline
- Modification Safety Categorisation StandardRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 07 Application of the graded approach to the management systemAlso in ONR Licence Conditions · Modification or experiment on existing plantNot safety case baseline
- Safety Classification of Structures, Systems and ComponentsRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 07 Application of the graded approach to the management systemAlso in ONR Licence Conditions · Safety mechanisms, devices and circuitsAlso in Nuclear Safety Case · Safety systems and maintenance schedule
- Safety System Software Qualification StandardRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Safety mechanisms, devices and circuitsNot safety case baseline
- Seismic Qualification StandardRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 07 Application of the graded approach to the management systemAlso in ONR Licence Conditions · Site plans, designs and specificationsNot safety case baseline
- Reactor Core Design and Reload StandardRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Safety documentationAlso in Nuclear Safety Case · Safety case and periodic safety review
Process, procedure, work instruction 6
- Engineering Change and Modification ProcedureRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Modification or experiment on existing plantNot safety case baseline
- Temporary Modifications ProcedureRepresentative exampleStation · addsAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Modification or experiment on existing plantNot safety case baseline
- Modification to Design of Plant under Construction ProcedureRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Modification to design of plant under constructionNot safety case baseline
- Construction and Installation of New Plant ProcedureRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Construction or installation of new plantNot safety case baseline
- Commissioning Procedure for New and Modified PlantRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · CommissioningNot safety case baseline
- Configuration Management ProcedureRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 08 Documentation of the management systemAlso in ONR Licence Conditions · Documents, records, authorities and certificatesNot safety case baseline
Supporting documents 4
- Engineering Design Standards RegisterRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 08 Documentation of the management systemAlso in ONR Licence Conditions · Site plans, designs and specificationsNot safety case baseline
- Site Plans, Designs and Specifications RegisterRepresentative exampleStation · addsAlso in IAEA GSR Part 2 · 08 Documentation of the management systemAlso in ONR Licence Conditions · Site plans, designs and specificationsNot safety case baseline
- Safety Mechanisms, Devices and Circuits ScheduleRepresentative exampleReactor unit · addsAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Safety mechanisms, devices and circuitsAlso in Nuclear Safety Case · Safety systems and maintenance schedule
- Fire Hazards AnalysisRepresentative exampleStation · addsAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Safety documentationAlso in Nuclear Safety Case · Safety case and periodic safety review
Guidance · outside the system 1
Informative, not a “shall”. These belong in the knowledge base, not the management system. How this works →
- Defence in Depth Engineering GuideRepresentative exampleCompany-wideAlso in IAEA GSR Part 2 · 10 Management of processes and activitiesAlso in ONR Licence Conditions · Safety documentationNot safety case baseline