SRA-E-06: Innovation and Technical Progress – Benefit without risk?Ljubljana, 11 – 12 Sep 06

Land Use Planning in the Context of Seveso II establishments in

AustriaMaria.stangl@stmk.gv.at

Overview

1. Introduction & legal basis

2. Reference Scenarios and their role in LUP

3. Legal impact & practical problems

4. Questions and answers

Dangerous neighbourhood ..

EU: Art. 12 of Dir 96/82/ECEnsure• appropriate distances between „Seveso“

establishments and residential areas, areas of public use and of particular natural sensitivity

• additional technical measures in the case of existing establishments

• consulation procedures to make available technical advice on generic or case-by-case basis

1. Introduction & legal basis

Control• siting of new establishments• modification to existing establishments• new developments

appropriate distancesreference scenarios

Art. 12 of Dir 96/82/EG / 2

Austria

• general LUP: legislative & executive competence of 9 Länder

• both transposition & implement´n of Art 12 into LUP legislation & administrative procedures

Permanent Seveso Working Group

• Discussion started in 1996.• decision taken in 1999 concerning

major scenarios LPG (highly) flammable liquid and solid substances, explosives and explosive gas-clouds

• decision on dispersion of toxic gases based on Report of TU Graz in 2000

• first recommendation in 2001• Amended recommendation in 2005

Permanent Seveso Working Group

2. Reference Scenariosand their role in LUP

• Proper solution for adequate distances between „Seveso-establishments“ and „sensitive developments“ – Distance model (MIACC-guide: threshold –

quantity related distances)– Standardized case-by-case assessment

• Accounting for active technical protective measures

• Avoid high incidence of coservative assumptions• Determine calculation models and parameters

Distance model (examples)

Part/no Substance Threshold (t) Quantity (t) Distance (m)

1/6 chlorine 10/25 100 440

1/14 LPG/natural gas

50/200 1001,000

150460

1/18 methanol 500/5,000 1,000 120

1/30 Petroleum products

2,500/25,000 100,000 440

2/1 Very toxic substances

5/20 550

150390

2/2 ammonia 50/200 10010,000

150690

2/2 Toxic substances

50/200 1001,000

150460

2/8 Extremely flammable liquids R11

5,000/ 50,000 10,000100,000

120370

Standardized case-by-case assessment

Substance Scenario Impact Assessment value

Liquefied flammable gases

BLEVE, UVCE a) Shock waveb) B) thermal

radiation

a) 0.050 barb) 500

TDU(see note)

Flammable liquid substances

Fire in the larges section/pool

Thermal radiation

3.0 kW/m²

Explosives Explosion of the biggest mass stored together

Shock wave 0.050 bar

Explosive gas/vapour cloud

UVCE after 1 min; release over a 25 cm pipe diameter (DN 250 for 10 min)

Shock wave 0.050 bar

Toxic substances

Release ofer a 25 cm pipe diameter (DN 250 for 10 min)

Effect on human health

IDLH

3. Legal impact & practical problems

• Scenarios as recommendations for technical advice

• Case by case approach possible, if necessary

Practical problems

• New developments around existing establishments (very frequent case)

• No more new developments (esp. housing)?Additional technical measures?

• Public perception?

Practical problems / 2

• Compensation to land-owners in case of prohibition of use for dedicated purpose (eg housing)??

• State aids for relocation of establishments??

• (Direct application of Art. 12 of Dir. in cases of insufficient compliance?

Thank you

• For your attention.• Questions and answers?