Process Safety Vs Personal Safety - IOSH · Process safetyis a blend of engineering and management skills focused on preventing catastrophic accidents, particularly explosions, fires,

Copyright © United Utilities Water Limited 2018

Process Safety Vs Personal SafetyConsequence

Likelihood

Chlorine

H2S

Flourisilic Acid

Manual handling

Biogas

Work at Height

Slips & trips

Lone Working

Process Safety

Personal Safety

Major off-site incident

Major onsite incident

Minor onsite incident

1

Process safety is a blend of engineering and management skills focused on preventing

catastrophic accidents, particularly explosions, fires, and toxic releases, associated with the use

of chemicals and petroleum products


Quick memory

test

World wide Process Safety Events

3


Examples

Level probe not working

High High Alarm triggered

Minor spill to soakaway / watercourse

Catastrophic tank failure

Layers of Protection

Miss-fill

Hazard

Near Miss

Incident

Major Incident

Chemical specific inlet connection

Interlocked two way bund drain

High level alarm

High High level alarm

Automatic shut-off triggered by

sensors

Overflow


Swiss cheese again?

5

Copyright © United Utilities Water Limited 2018 6



Who remembers…

Snore

Wake

Blanket

Sleep

8










Process Safety Vs Personal Safety - IOSH · Process safetyis a blend of engineering and management skills focused on preventing catastrophic accidents, particularly explosions, fires,

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