wp6_beg022_v0_4_intro slides.ppt

no: 1 CEMSIS

CEMSISFIKS-CT-2000-00109

CCost-ost-EEffective ffective MModernisation of odernisation of SSystems ystems IImportant to mportant to SSafetyafety

Deryk Pavey,Deryk Pavey,

wp6_beg022_v0_4_intro slides.ppt

no: 2 CEMSIS

CEMSIS Objectives Programmable Instrumentation and Control (I&C)

safety systems (e.g. protection) safety-related systems (e.g. control, data presentation)

Common approach to development and safety justification maximise safety minimise cost

Modernisation/Refurbishment analogue/discrete logic replacement with computer-based systems

wp6_beg022_v0_4_intro slides.ppt

no: 3 CEMSIS

‘Stakeholders’ in CEMSIS Nuclear Plant Operator

British Energy (co-ord.) UK electricity generation Electricite de France F electricity generation British Nuclear Fuels UK nuclear fuel processing

Suppliers & System Integrators Framatome ANP DE I&C supplier Sycon International SE system developer

Safety Authorities & Assessors AV Nuclear B inspection and licensing Adelard UK safety consultancy SKI (Sycon subcontract) SE inspection and licensing

IT Research TU Lund SE research & education

wp6_beg022_v0_4_intro slides.ppt

no: 4 CEMSIS

Key Issues

Harmonisation & Structuring of Safety Justification approaches

Definition of Requirements for Systems Important to Safety

Use of Pre-Existing Software in Systems Important to Safety

potentially including class A systems

Use of Languages and Tools in Systems Important to Safety

wp6_beg022_v0_4_intro slides.ppt

no: 5 CEMSIS

CEMSIS Modernisation Context

Utility

Supplier

Regulator

Project viability

User requirements

process

Requirementsdocument

SISrequirementsspecification

Tenderingprocess

Test andVerification

SWDevelopment

SIS ImplementationDecomposition

& Design

Final Licensing /Approval

Approval

Normal operation and maintenance

Acceptance &Phased

Introduction

ValidationInstallation

& Site Commissioning

Negotiation &Acceptance

Pre-qualification(independent assessor)

Amended SISrequirements

Safety Justification

Plan

4

4

4

4

4

44

4

Key:= Work Package Number

Discuss/Agree

3

3

Safety Justification1

1

Regular communication and informed comment

2

2

2

2

wp6_beg022_v0_4_intro slides.ppt

no: 6 CEMSIS

Work Package TasksSafety Justification

Survey and FrameworkSafety Justification

FrameworkWP1

Requirements CaptureSurvey and Lifecycle

Requirements CaptureGuidelinesW

P2

Pre-Existing S/WStrategy & Techniques

Pre-Existing S/WGuidelinesW

P3

Languages & ToolsReview and Evaluate

Languages & ToolsReportW

P4

WP0,6

Management and Dissemination

Case Studies:UK: fuel reprocessing

F: PWR I&C replacementSE: safety monitoring

+ Public Domain ExampleWP5