Page 176 - CW E-Magazine (19-9-2023)

Special Report

Table 1: API-754 classifi cation of Process Safety Incidents
Injuries Community Damage in fi res & explosions Loss of primary containment
impact
Tier 1 Fatality or LTA for Community Fire or explosion causing direct damage Material release ≥ Tier 1
employee/contractor evacuation cost ≥ $100,000 threshold quantity
Tier 2 MTC/RWC for em- Fire or explosion causing direct damage Material release ≥ Tier 2
ployee/contractor costs ≥ $2,500 and <$100,000 threshold quantity
Tier 3 First aid injury Fire or explosion causing direct damage Material release < Tier 2
costs <$2,500 threshold quantity
LTA = Lost time accident; RWC = Restricted workday cases; MTC = Medical treatment cases.
“Even a 0.5-kg leak indoor of phosgene is termed a Tier 1 incident on par with incidents involving fatalities, community evacuation or economic damage
in excess of $100,000,” he added.
Atul Ltd., made a presentation on a plied consistently across the industry,  May involve indirect cost as result

Process Safety Incident (PSI) Classi- and devoid of subjectivity,” he noted. of process related fi re, explosion or
fi cation system, which is based on LOPC; and
API 754 standard, and is being imple- A PSI, according to him, has one or  May involve one or more injuries as

mented at company sites since last more of the following characteristics: result of process related fi re, explo-
two years.  A chemical or chemical process sion, or toxic exposure.
must be directly involved in the
The purpose of any incident classi- incident; As per the API 754 standard, PSIs can
fi cation method is as an indicator to  Occurs in areas involved in produc- be classifi ed as Tier 1, Tier 2 or Tier 3.

continually improve safety perfor- tion, storage & transfers within site, While the fi rst two incident levels always
mance; allow internal and external utilities or pilot plant; involve LOPC of hazardous chemicals
benchmarking; and identify trends and  Involves ‘loss of primary contain- (with Tier 1 having greater consequence

enable predictive monitoring. “The ment’ (LOPC) due to unplanned/ than Tier 2), Tier 3 incidents may or may
classifi cation needs to be simple, ap- uncontrolled release; not involve LOPC.

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176 Chemical Weekly September 19, 2023

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