PERSONAL SAFETY INTERLOCKS External EHS Expert Panel Workshop

CURRENT STATUS Functional Concept (Conceptual Design) RSD for tender (negotiated procedure) Negotiated procedure to be launched Internal review External review Meetings with companies

PERSONAL SAFETY INTERLOCK Integrated Safety System PLC based Defined safety modes of PSI controlled areas Defined roles and reponsibilities Defined procedure for safe operation IEC 62061, IEC 61511, and IEC 61508.

CONCEPTUAL DESIGN Baseline for negotiations Summary of forseen functions Contains: - Preliminary Hazard Analysis - Definition of basic functions - Definition of safety area modes - Establishment of procedure - Basic description of interfaces - Warnings and visualization - Requirements on data management and reporting

PRELIMINARY HAZARD ANALYSIS Hazard identification Failures definition Causes & Conseq. Controls to be implemented Hazards: - Ionizing radiation - Lasers - High volatge - Gases (flammable, toxic, O2 depleting) - Vacuum

PRELIMINARY HAZRD ANALYSIS Areas affected Doors to be interlocked Controls to be implemented PSI functions

AREA MODES Definition of area modes for experimental halls E2-E6, E1, Plant rooms, and Beam transport Description, requirements, and rules defined Condition for mode transition

PSI PROCEDURE Roles and responsibilities Access Search Release Emergency procedures Maintenance Failures

INTERFACE Monitoring system (ionizing radiation, gases) (one way communication to PSI) Access control system (mutual communication) Fire alarm system (one way communication to PSI) Machine safety system (one way communication to MSS) Control system (one way communication to CS) Laser Safety System

EXAMPLE

REVIEWS OF CONCEPTUAL DESIGN Internal: all relevant team at ELI BL (lasers, experiments, engineering, project management, planning, maintenance) External

TENDER Negotiated procedure Deliverables: - Risk analysis; - Safety requirements documentation (SRS); - Design of the PSI system; - Hardware and Software; - Installation; - Verification, testing and validation - User Documentation (including maintenance plan); - Technical documentation (including documented source code, calculation/verification of SIL); - Documentation of the project management (including Project management plan, verification-validation plan, verification-validation documentation, etc.); - Tools and software for further development and maintenance.

Exact time for completion will be made during the negotiations. TENDER RDS done Notice done and to be sent to the suppliers Questionnaire and topics for negotiations done Entire project will be staged according to the project schedule based on re-scoping! Exact time for completion will be made during the negotiations.

OPTIONS FOR E1 E1 operational safety PSI Administrative Trained personnel Strong safety culture Clear instructions Only for period until PSI will be installed! Pilz PSI based system Design done Basic programming done Only for period until PSI will be installed!

Discussion