ROAD TUNNEL

WATER MIST FIRE PROTECTION

Unveiling the risks:

Why robust tunnel fire protection is essential

About Hydrocore

Founded in 2012, Hydrocore was

established to bring innovative fire

protection solutions to the market,

specializing in high-pressure water mist

technology. All our systems are designed

and manufactured in our state-of-the-art

factory in Hull, UK, ensuring the highest

quality and reliability. Our product range has

expanded to include both high-pressure and

low-pressure water mist systems, as well as

automatic and manual section valves with

closed nozzles.

Hydrocore’s commitment to excellence is

reflected in our extensive certifications,

including ISO 9001:2015, FM Approvals,

CCS Approvals, and other independently

respected body like UL, SGS, TUV

performance-based tests.

Fire Spread

Tunnel fires can reach 1000°C within

minutes. Wind tunnel effects accelerate

fire spread, while confined spaces

make firefighting more difficult.

1

Structural Damage

High heat weakens tunnel structures,

increasing the risk of collapse and 3

long-term damage.

Casualties

Limited escape routes and rapid smoke

buildup increase risks of injury and

fatalities. Heavy traffic and smoke

complicate evacuation.

2

Economic losses

Fires cause significant disruptions,

resulting in economic losses and 4

extended closures for repairs.

Hydrocore Water Mist Solutions

Rapid fire suppression

in confined spaces

Water mist systems quickly control tunnel fires

by containing heat and limiting fire spread in

confined spaces.

Efficient cooling to

prevent re-ignition

50-micron droplets rapidly absorb heat,

reducing tunnel temperatures and preventing

re-ignition. Prolonged discharge cools hot

surfaces, ensuring safety post-fire.

Smoke containment

and scrubbing

Water mist traps smoke particles, improving

visibility and reducing smoke spread. Cleaner

air enhances evacuation safety and reduces

inhalation risks.

One system

for total protection

One system covers various fire types, from

vehicle to electrical fires, eliminating the need for

multiple suppression systems.

Space-saving

installation

Smaller tanks, pipes, and pumps save space,

optimizing confined areas and reducing

infrastructure needs.

Environmentally friendly

future proof

With no harmful chemicals and minimal water

use, the water mist system ensures

environmental safety. It meets global safety

standards .

High-pressure pump group

Fire alarm control cabinet

Regional control valve set Pipe network and nozzle

Handheld spray gun

Deluge Systems

Pre-Action Systems

Wet Pipe Systems

Provides strong smoke suppression, detoxification, and cooling effects

Optimal for evacuation, protection of tunnel structures, and improvement of the

tunnel’s driving conditions during fire

Lightweight and space-savHigh-quality stainless steel

Unique thin wall technology

Standard 5-year warranty

The Hydrocore water mist nozzles wassuppression zones in tunnel, each withoperating pressure at the remote nozzlnozzles LP 10/1 and LP 17/1 were usednozzles on each N-PIPE was 520mm

High-Pressure Water Mist System Overall system configuration

Pipes

Fittings

Safe press fitting technology

Quick and flexible installation

Build to last

Standard 5-year warranty

Section valve

Excellent performance:

high water flow capacity

at lower pressure drop

Improved serviceability

Modular design

Remote testing option Maintenance-free pumps,

lubricated by water

Robust, resistant, and efficient

Increased water flow and

minimal starting peak current for

pump unit

with frequency converters

Plug & play unit

Pump unit

Tunnel

air

veloclty

Water Mist Water Supply

directional nozzles

Fire zone 1(25m pre zone) 0.52m

0.75m 0.75m 6m

pendant spray no

ving

l

y

Low water consumption

Reliable fire suppression

Short installation time

High spacing

s designed to simultaneously activate two

h a length of 25 metres long. The designed

les was set at 10bar. The two types of

d for the system. The spacing of the

Open nozzles of stainless steel used in open type systems (also known as zone

protection) for the protection of road tunnel

Factory Prefabricated N-PIPE for direct installation of nozzles into the pre -

assembled nozzle sockets reduce installation cost of on site

Low-Pressure Water Mist System

Nozzles

Fire hose reel cabinet

Easy integration with the water

mist system

Up to 50m long and thin hose for

easy handling and large coverage

Tested against Class A fires (solid

fuels) and Class B fires

(flammable liquids)

Fire zone 2(25m pre zone)

ozzles

Range pipe Fuel Load

Target

5m

Fire Range pipe

Range pipe

Nozzles

Sectional View

70°

LP17 LP17 LP10

70°

Water Mist Nozzles

0.52m 0.52m

Hydrocore is a global leader in tunnel fire protection, pioneering water mist applica120+City Tunnels 80+Cable Tunnels 30 +Road tunnels

Currently protecting over 860 km of tunnels

Hydrocore and our partners are world-leading in the total distance of tunnels

protected and in conquering the toughest engineering challenges

Tailored protection for project-specific demands

Backed by full-scale real-world fire test validation of cutting-edge engineering solutions

Undersea tunnels Road tunnels

We validate our fire protection solutions using life-size tunnel experiments, ensuring their effectiveness with real-world data,

including 200MW tunnel fire tests. This example simulation shows how quickly fire spreads and smoke layers descend (smoke

layer reaching the ground within 45s), leading to potential poisoning, structural damage, and a chain reaction of vehicle fires

Select fire simulation and tests conducted:

Analysis of fire spread and suppression in large-scale tunnel fire simulations

Key technology research on fire prevention in urban rail transit tunnels

Comprehensive research on fire suppression for ultra-long and high-traffic urban tunnels

Experimental analysis of fire spread and evacuation in tunnel fires involving large vehicles

Development of multi-level fire detection and monitoring standards for road tunnels

ations in the most complex and challenging tunnels

Unmatched R&D leadership in tunnel fire protection

Powered by strategic partnerships, our collective expertise and cutting-edge

experimental platforms validate and deliver innovative solutions

Lgnition (T=0s)

200MW

T (T=10s) T (T=20s) T=40s T=50s T=60s

Global Solutions for Fire Protection, Everywhere You Need Us

To meet the growing global demand, we have also established offices in Singapore, Shanghai, Dubai, Jeddah, Cairo

and Mumbai , allowing us to provide exceptional service and support to our clients worldwide.

Craven House, Harpings Business

Park, Harpings Road, Hull HU5 4JF

info@hydrocore.co.uk

+44 (0) 1482 629290

Shanghai

Singapore

Mumbai

Dubai

Cairo