Samenvatting veiligheidsanalyse Groene Hart boortunnel

The Knowledge Platform for Tunnel Safety (KPT) asked Nils Rosmuller, lecturer in Energy and Transport Safety at the IFV, to think about the possibilities for firefighting in such tunnels. In consultation with Brandweer Nederland, Rijkswaterstaat and the IFV  Brandweeracademie, resources for officers-in-charge have been developed. This document presents the tools that have been developed (decision diagram and operational capability table) as well as the process of their creation and ideas about the section on 'concrete spalling' in the development of the decision diagram. 

On 8 August 2017, the Minister of Infrastructure and Water Management sent a letter to the Dutch House of Representatives concerning the reduced fire resistance of concrete in four tunnels as established following an investigation by Rijkswaterstaat. This received extensive media attention and the findings led to many questions from various interested parties. This publication contains an overview of the results obtained through a collaborative process of those interested parties, facilitated by the Knowledge Platform for Tunnel Safety (KPT).

Research commissioned by Rijkswaterstaat has shown that the fire resistance of tunnels made of ROK concrete may be impaired. In response to this, four discussion tables were set up at the end of 2017 under the coordination of the Knowledge Platform for Tunnel Safety (KPT) with the aim of discussing the problems outlined above from various perspectives. These are the discussion tables for Existing Tunnels, New Tunnels, Research, and Emergency Services.  This document was prepared by Discussion Table - Research in response to the request for further substantiation of the final conclusions. The explanations presented here basically reflect the way in which each conclusion was reached and the reasons for it. The conclusions (and the explanations) should, however, be considered as a whole, in view of the order in which they are reached and to safeguard the message.

Voor een goed ontwerp is een gedegen inzicht nodig in de werkelijke risico’s, en is alleen het voldoen aan de normen nog geen garantie voor een optimaal ontwerp. Met meer kennis over de veiligheidsbenadering, de achtergronden van de voorschriften en van de statistiek is een grotere optimalisatie van het geotechnisch ontwerp mogelijk, en dit kan tot kostenbesparingen leiden. Deze publicatie geeft de mogelijkheden aan voor het optimaliseren van het ontwerp.

Degradation of materials used in tunnel construction can cause damage and eventually lead to tunnel closure. To support tunnel owners and their consultants in identifying, preventing, and stopping these failure mechanisms, the COB network has described more than fifteen types of damage along with instructions for maintenance and (non-destructive) inspection techniques.

In de toekomst zullen tunnels steeds vaker te maken krijgen met extreme weersomstandigheden. Het COB-netwerk heeft een eerste verkenning gedaan om de risico’s van klimaatverandering ten aanzien van (toekomstige) tunnels in kaart te kunnen brengen. Het rapport formuleert activiteiten waarnaar in de (nabije) toekomst gehandeld moet worden.