01718007

Monograph

http://onlinepubs.trb.org...ocs/NCHRP20-07(363)_FR.pdf

https://apps.trb.org/cmsf...Display.asp?ProjectID=3743

The objective of this document is to improve the safety of highway tunnels by developing methods and guidelines for emergency tunnel ventilation. The document provides guidance to the owners and agencies, law enforcement agencies, first responders, designers, and vendors in reference to emergency tunnel ventilation. It can also be used by State Departments of Transportation (DOTs) for implementing best practices within their tunnel operation program in order to improve public and emergency responder safety. To date, there is limited experience and knowledge regarding effective practices for ventilating a significant roadway tunnel fire. This guideline focuses on developing improved practices for road tunnel fire emergency ventilation which include but are not limited to, full transverse, partial transverse, and longitudinal type ventilation systems. The guideline considers tunnel geometrics such as tunnel altitude, physical dimensions (i.e. length, cross section), type of traffic flow (i.e. single or bi-directional flow), and fan utilization and placement. It also considers cargo types and quantities as they pertain to fire heat release rates (FHRRs) and ventilation requirements. The guideline determines the effects of ventilation on tunnel fires including fire size. It explores the interaction of firefighting and ventilation system operation. The document addresses the practicality of emergency tunnel ventilation system control and its application when other systems, such as fixed firefighting systems, are used.

NCHRP Project 20-07, Task 363

English

115p

2016-5

Digital/other

Appendices; Figures; Glossary; Photos; References; Tables

Best practices; Fire fighting; Fires; Guidelines; Hazards and emergency operations; Highway safety; Smoke; Vehicular tunnels; Ventilation systems

Bridges and other structures; Highways; Safety and Human Factors

TRIS

Aug 28 2019 2:13PM