Personnel Safety Systems

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Personnel Safety Systems Bryce Karnaghan
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Background

• My history
• 25 Years in control systems
• Most experience on water, power and rail
• Leaning about synchrotrons
• Beamline PSS
• Via booster and storage ring PSS

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Requirements of a PSS

• Protect personnel
• Safety Integrity Level 3
• No single point of failure
• Fail-safe
• Other requirements
• Separate system from controls and instrumentation
  system (EPICS)
• Be able to transfer data to EPICS
• Control personnel access when radiation hazards
  exist
• Allow mtce access when radiation hazards removed

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Meeting the requirements

• Equipment
• Uses safety rated PLC/relay system from Pilz

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Meeting the requirements (cont)

• Equipment (cont)
• An intercom and video surveillance system at
  access points
• Controlled access gates
• Captive permit key
• Blue lights in vaults when no access is not
  allowed
• Illuminated signs, at appropriate locations
  within the facility
• Emergency Stop buttons throughout the vaults
• Ability to crash out of an access gate
• Safety switches on doors as interlocks

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Meeting the requirements (cont)

• Three operation modes
• Open Access Mode
• Allows unlimited and open entry to authorised
  personnel.
• Both the radiation and electrical hazards are
  interlocked to be off.

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Meeting the requirements (cont)

• Three operation modes (cont)
• Authorised Access Mode
• Allows limited and controlled entry to authorised
  personnel through controlled doors only.
• The radiation hazards are interlocked to be off.
• Electrical hazards may be on to allow specialised
  testing.
• This access mode allows for the search / secure
  procedure of each zone and for limited /
  controlled procedural access.
• In both cases access is allowed only to
  authorised personnel following a strict protocol.

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Meeting the requirements (cont)

• Three operation modes (cont)
• No Access Mode
• Allows operation of the beam in the Linac Booster
  Area (zones 1, 2 and 3) and/or into the Storage
  Ring (zones 4, 5 and 6).
• Radiation and electrical hazards exist and no
  personnel are allowed in the zone.
• Must complete search before entering this mode

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Implementation

• External contract
• Installed by Sage Automation in partnership with
  Pilz and Nielsen.
• Meeting all requirements

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Implementation (cont)

• Equipment
• Pilz safety rated PLC/relay system

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Implementation (cont)

• Equipment (cont)
• Triple redundant CPUs
• Safety bus
• Inputs and outputs are dual channel
• Certified software

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Implementation (cont)

• Equipment (cont)
• Control desk located in the control room
• Video feed from labyrinth doors
• Intercoms to labyrinth doors
• Master Reset
• PMI (HMI) located in control desk

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Implementation (cont)

• Equipment (cont)

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Implementation (cont)

• PMI

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Implementation (cont)

• PMI (cont)

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Progress

• Linac, Booster, Storage Ring
• Type testing of major systems (FAT)
• Final functional requirements definition
• Physical installation commence May

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Beamline PSS

• Storage ring PSS provides a failsafe contact
  indicating shutters can be opened
• Beamline PSS's will be standalone systems
• Will provide personnel safety in the Beamline
  hutch
• Will utilise the search method for securing
• Will be responsible for opening the shutters
• Use Pilz safety rated equipment
• Will be coded in house