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How to deal with residential areas and
areas of public use in the vicinity of
Seveso establishments
ir. Lina Grooten
Safety Report Division
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Flanders (Belgium): situation
Dense population, dense road and railway network
164 uppertier Seveso establishments118 lowertier Seveso establishments
Concentrated in 3 areasPort of AntwerpPort GhentAlbert canal
Rest dispersed
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Concentration of population versus Seveso-establishment
Seveso-establishment (lower/higher tier)
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Flanders: criteria - IRC
Risk
AcceptabilityIRC
Border of the
establishment 10-5/y
Border of
residential area 10-6/y
Border of area
containing vulnerable 10-7/y
location
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Flanders: Criterium – Societal Risk (SR)
criterium
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Areas of special attention• Residential areas ( IRC 10-6/y and SR)
– Residential zoning
– Group of at least 5 dwellings in non-residential zoning
• Areas with a vulnerable location (IRC 10-7/y and SR)– Schools (< 18 years)
– Hospitals
– Retirement homes
• Buildings and areas of public use, recreational areas (SR)
• Major transport routes (probability/effect)
• External sources of danger (probability)
• Areas of particular natural sensitivity or interest (effect)
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Case 1 (2004) Residential area nearbySeveso establishments
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Residential area nearby Seveso
Perstorp Oxo Belgium
EOC Latex Division II='hazardous activity’ under the
the UNECE Industrial Accidents
Convention
In 2004:
360 ton butadiene (mounted
tanks)
+ expansion planned ca. 300 ton
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Residential area nearby Seveso
EOC Latex Division II
Perstorp Oxo BelgiumOverdam
ca. 20 houses
ca. 4 agricultural companies
a manege
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Historical situation versus LUP proposal
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Conclusion case 1
Results in Spatial Safety ReportDecision
No residential area in LUPIn period of 10 years no houses in area within IRC= 10-6/year
ResultSafe situation
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2007 2016
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Case 2 (2017) Theater performances nearby Seveso establishments
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Theater performances nearby Sevesoestablishments
In Port of AntwerpTheater performances- Period of 2 years (from wed. till sunday)
- Ca. 1600 spectators + 200 employees
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Theater performances nearbySeveso establishments
RisksNearest Seveso-establishment: 20m
21 Seveso-establishments with 1%-lethality-distances over the specific location
16 establishments with toxic substances18 establishments with flammable substances21 establishment with ecotoxic substances
-> those establihments containing hazardous substances are defined as a 'hazardous activity' under the UNECE Conventionon the Transboundary Effects of Industrial Accidents
Storage & handling Chlorine within 500 m
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Theater performances nearbySeveso establishments
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Conclusion case 2
Technical adviceNo appropriate safety distance between Seveso establishment and area of public useAugmentation of consequences of a major accident
ResultNew location = Safe situation
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Lessons Learned
Land use planningUse of Spatial Safety Report
Examinationproposal of solutions
Technical advise specific forNew rule since jan. 2018: technical advice for act within theframework of building permits
ChallengesHow to deal with events/festivals (like Tomorrowland, …)Developping a quick scan method to evaluate the impact of off-site developments on the societal risk of Sevesoestablishment