PGS 29 requirements

René Sloof Antea Group Netherlands

Bund Fires

Agenda

• Bund Fire facts & questions

• PGS 29 bund fire policy explained

• Implementation plan

• Bund Fire effects

• Bund Fire mitigation options

• Unsolved topics

Bund Fire facts & questionsPGS 29

• AHJ considers Bund Fires as crediblescenarios, not worst case scenarios.

• Enough examples available includingspills without fire!

• What are the odds of a bund firehappening in the Netherlands?

• To what extent does a business needto invenst in this scenario?

• What about protecting surroundinginstallations?

• Which design codes & strategiesneed to be followed?

• Is a terminal obliged to act?

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PGS 29 bund fire policy explained

• Fixed starting point, storage tank contents releases completely in 10 minutes.– Biggest pipeline connection rupture– Opening (Tear) in tankshell

• Only fixed roof tanks are part of the bund fire policy. Floating roof tanks (including aluminium dome covered) are not part of the policy

• Risks for people & environment are to be considered within 1 km radius from facility boundaries

• 1 (ernstig), 4 (significant) and 24 (beperkt) hour scenarios with noticeable mitigation effects

• Toxic (fire) products - 1 hour scenario• Escalation to be taken into account• Measures to be implemented in permits by 2021

Bund fire scenarios and legislation

• PGS 29 2008 is BBT (BAT) at this point in Mor

• PGS 29 2016 will soon be BBT (BAT) in Mor

• Permits requirements (Environment/VR)

• PGS 29 new style project will start soon– I-SZW, RIVM, IPO / VNG, Veiligheidsregio’s / Brandweer Nederland, Industry (VNPI, VOTOB, VNCI)

PGS 29 bund fire policy planningPGS 29

• Implementation plans phase 1 have to be submitted now

• Implementation plans phase 2 need to be submitted on 1-3-2018

• Mitigation measures have to bein place 31-12-2021 and will beincorporated in theenvironmental permits/company fire brigade permit

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Phase 1 selection process

H300, H301, H310, H311, H330, H331

80%

1) Grootschalige of langdurigeevacuatie en/of opvang van bevolking 2) Omvangrijke én langdurigebelemmering of ontregeling van normaal maatschappelijk verkeer3) Internationale bezorgdheid en/of omvangrijke of langdurige internationale media aandacht

1) Tijdelijke evacuatie en/of opvang van bevolking Grootschalige of langdurige overlast voor bevolking Langdurige impact bedrijfsactiviteiten buurbedrijven Escalatie brand/explosie scenario mogelijk naar hogere ernst categorie2) Omvangrijke, langdurige of aanzienlijke én tijdelijke belemmering of ontregeling van normaal maatschappelijk verkeer

Implementation plan format (phase 1 & 2)

• General information about facility• Information considering the storage tanks involved• Information regarding the bunds involved• Bund fire scenario details

– Surroundings– Effect calculation results Phast, Effects, CFD etc.

• Insight in facility surroundings– Waterways, roads, railroads– Vulnerable objects

• Determination of bund fire mitigation strategy• Company Fire Brigade

Bund fire effects

Direct effects:• Heat radiation

• Smoke & toxic gasses

• Soil contamination

• Business interuption

Indirect effects

• Blockage of infrastructure

• Evacuation of civilians

Evaluation:

• Risk to people from fire

• Impact of smoke plume (meteorological and topological factors)

• Potential to extinguish the fire successfully

• Risk of fire spreading

• Presence of important buildings/installations in the vicinity

• Ability to retain fire fighting water

• Potential impacts should fire water run off

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Bund fire mitigation strategy options

• Secondary & third containment

• Mobile fire fighting systems

• Fixed fire fighting systems

• Burn down philosophy?

• Fixed & Mobile combined

• Cooling of storage tanks, pipe racks, pump rooms, process installations

Secondary & third containment

• Sufficient run off to thirdcontainment

• Sufficient containment capacity

• Minimal heat radiation effectsfrom third containment tosecondary containment

• Containment filling minimizeseffects

• Minimize surface size, use depth

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Mobile fire fighting systems

• Timeline > 30 minutes?

• 30 minutes = 1900 m2

• Bund holding capacity!!!

• Monitor reach

• Positioning outside 3 kW/m2

• Indirect application

• Application rate, NFPA 11

• Permit???Rotterdam situation, TPB system

Fixed fire fighting systems

• Timeline < 5 minutes!

• Bund holding capacity, 30 minutes

• Foam generator locations

• Positioning of supply pipelines

• Foam storage (central system)

• Application rates, NFPA 11 or EU code

• Permit???

• Testing

Burn down philosophy?

• 24 hour scenario only

• 24 hours or more officially not allowed

• Smoke cloud evaluation

• Remote area

• Local fire fighting capacity

• Limited fuel – 30 cm/hour burn rate

Fixed & Mobile combined, new technologies

• Semi fixed systems

– Dry pipe along bund wall and inside bund

– No foam storage

• Fixed covering systems (toxic spills)

• Fluorosurfactants free foams

Cooling of storage tanks, pipe racks, pump rooms, process installations• Storage tank cooling systems

– 2 to 10 lpm/m2

– Spray ring every 3,6 meters

• Piperacks– Pipeline BLEVE’s

• Pump rooms– Pipeline BLEVE’s

Unsolved topics

• Cooling of storage tanks beyond 30 minutes

• Storage tanks to be considered write off?

• Risks for fire fighting personel

• First bund fire then storage tank fires?

• Fire water hold-up requirements

• Fire water pump & grid capacity

PGS-29, EI-19, NFPA 15

Alle kennis in huis op het gebied van PGS 29? Via de leergang PGS 29 wordt u in drie modules volledig op de hoogte gebracht van alle wijzigingen die hebben plaatsgevonden binnen de PGS 29 (versie 1.1 2016). Antea Group en Witteveen & Bos hebben hun kennis en expertises gebundeld en samen met de NEN de leergang ontwikkeld.

Aanmelden via:http://www.formdesk.com/nen/Leergang_PGS_29

Contact details

R.J.P. (René) Sloof BSc

Project Manager

Environment & Safety

Rivium Westlaan 72

2909 LD Capelle aan den IJssel

The Netherlands

M: +31 6 22937838 | F: +31 10 2351701

rene.sloof@anteagroup.com www.anteagroup.nl

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