MHD 535
General functions and specific requirements
31.05.2011 / No. 2 / Hma/Büh/Rog/Bs © Securiton AG
General requirements for fire detection
Detection of fire as soon as possible
� Rescue lives
� Protection of buildings and infrastructure
Reliable function
� High availability
� No false alarms
31.05.2011 / No. 3 / Hma/Büh/Rog/Bs © Securiton AG
Requirements for fire detection
Increased requirements in outdoor applications and aggressive environments
� Aggressive gases, e.g. off gases
� Moisture, incl. condensing moisture
� Salt mist
� Dust
� Steam
� Extreme temperatures
Conventional point detectors (smoke or temperature) cannot be used
The solution: line type heat detectors
� LTHD (Line Type Heat Detector)
� Temperature sensor cable
31.05.2011 / No. 4 / Hma/Büh/Rog/Bs © Securiton AG
Application fields for LTHD
Aggressive environments
Long lengths or large areas with many measuring points like tunnels or car parks (economic advantage)
Applications with difficult access after installations, e.g. hollow ceilings. LTHD is maintenance free
MHD 535
Definitions & positioning for line type heat detectors
Relevant Standards
31.05.2011 / No. 6 / Hma/Büh/Rog/Bs © Securiton AG
Definition of line type heat detector
� Line type temperature measuring system (MP)
� MHD = (Multipoint Heat Detector)
� According to prEN54-22: LTHD (line type heat detector), multipoint heat detector
31.05.2011 / No. 7 / Hma/Büh/Rog/Bs © Securiton AG
Standards for line type heat detectors
EN 54-5 Point Type Heat Detectors
� Current systems usually tested according to this standard
� Classes A1, A2, B … G
EN 54-22 Resettable Line Type Heat Detectors
� Short before formal voting
� Classes similar to A1, A2, B …G
EN 54-28 Non-resettable Line Type Heat Detectors
� First draft available soon
FM 3210 Heat Detectors
� Sprinkler-based focus with RTI classes
GB 16280 Line Type Heat Detectors (China)� For linear/analogue systems only
31.05.2011 / No. 8 / Hma/Büh/Rog/Bs © Securiton AG
Grouping of line type heat detectors in accordance with EN 54
31.05.2011 / No. 9 / Hma/Büh/Rog/Bs © Securiton AG
Parts of line type heat detectors -- definitions
31.05.2011 / No. 10 / Hma/Büh/Rog/Bs © Securiton AG
LTHD Systems: Semiconductor sensor cable
Description:
� Temperature sensor cable with sensor distance 2 m to 20 m
Specifications:
� Response speed: middle to high
� Absolute value or rate of rise alarm
� Redundant – fault tolerant
Additional features:
� Temperature profile
� Temperature values for each sensor available
� Threshold of each sensor editable
31.05.2011 / No. 11 / Hma/Büh/Rog/Bs © Securiton AG
LTHD Systems: Fibre optic cable
Description:� Fibre optic measurement system
with laser (OTDR or OFDR)
Specifications:� Response speed: meadium - high
� Absolute value or gradient alarm
� Redundant – fault tolerant
Additional features:� Temperature profile
� Precise localization (1 m)
� Dependence: spatial resolution –temperature resolution – length of the system - detection speed
31.05.2011 / No. 12 / Hma/Büh/Rog/Bs © Securiton AG
LTHD Systems: Pneumatic system
Description:� Pneumatic system with copper, steel
or PTFE tube� Segments by 100 m
Specifications:� Response speed: high� Absolute value or gradient alarm
Additional features:� Simple and widely proved system� Very high reliability� For very high temperatures
31.05.2011 / No. 13 / Hma/Büh/Rog/Bs © Securiton AG
LTHD Systems: Analogue system
Description:
� Based on 2 or 4 wire cable with NTC behaviour (resistance measurement)
� Integrating system
Specifications:
� Response speed: middle
� Absolute value or gradient alarm
� Length limited up to 300 m
Additional features:
� Optional: hot spot detection
� Cheap and well known in the market
31.05.2011 / No. 14 / Hma/Büh/Rog/Bs © Securiton AG
LTHD Systems: Non-resettable LTHD
Description:� Twisted pair cable with heat sensitive
polymer� Suitable only for very big fires
Specifications:� Threshold at 57°C / 68°C (other higher
thresholds available)� Optional localization� Has to be replaced after a fire event
Additional features:� Simple and low cost system
31.05.2011 / No. 15 / Hma/Büh/Rog/Bs © Securiton AG
P [MW]
t [s]
1
2
3
4
5
6
200
400
600
800
1000
1200
15 30 45 60 75 90 105 120135150
dt
TPAlarm at 60°C
P [MW]
t [s]
T [°C]
1
2
3
4
5
6
200
400
600
800
1000
1200
15 30 45 60 75 90 105120135150
dtdT
TPAlarm at
>4°C/Min
Rate of rise value� very fast� e.g. at 4°C/min.
Maximum value
� slow� e.g. at 60°C� fire has to develop a certain
enery
Rate of rise detection is faster than maximum temperature detection!
AlarmAlarm
Rate of rise or maximum temperature ?
T [°C]
MHD 535
System Overview & USPs
31.05.2011 / No. 17 / Hma/Büh/Rog/Bs © Securiton AG
System Overview - Main specifications
� Line type heat detector using the multipoint measuring principle (sensor cable)
� Alarm by absolute temperature or rate of rise
� VdS certification according to EN 54-5 class A1, A2, B, C
� Freely programmable detection properties per sensor and/or group
� Sensor distance 2 m, 4 m, 7 m, 10 m, and 20 m or customised to meet customer’s demand
31.05.2011 / No. 18 / Hma/Büh/Rog/Bs © Securiton AG
System Overview - Main specifications
� Sensor cable length up to 2,000 m or 250 sensors
� Alarm, fault, and 8 group relays; extendable up to 64 groups and 200 relays (e.g. presignal, alarm)
� Serial interface RS232, RS422, Modbus, fibre optics
� Modular system concept
� Fault tolerant network option FT-NET
31.05.2011 / No. 19 / Hma/Büh/Rog/Bs © Securiton AG
System overview - USPs
Fast alarm detection� Very fast read-out time
(analogue, patented HS-BUS)
� IR sensitivity of the sensor
� Thin cable jacket
� Individual thresholds for each sensor
Precise localization of the alarm� Sensor distance freely selectable between 2 and 20 m
� Individual sensor data available via serial interface
� Up to 64 individual groups
31.05.2011 / No. 20 / Hma/Büh/Rog/Bs © Securiton AG
System overview - USPs
Flexible adaptation and installation� Individual configuration of each sensor with
user-friendly MHD Config software
� Very flexible cable, easy to install
Well-suited for industrial applications� Cable and modules IP 66
� Control units IP 65
� Resistant to aggressive atmospheres
� ATEX approval
31.05.2011 / No. 21 / Hma/Büh/Rog/Bs © Securiton AG
System overview - USPs
Increased availability� Power supply and readout on both sides of
the cable
� Sensor separator modules give resistance to interrupt and short circuit
� EN 54-17 approval (short circuit isolators)
Low and easy maintenance� No consumables and wear parts – high
lifetime
� Mobile sensor test unit for easy alarm generation available
31.05.2011 / No. 22 / Hma/Büh/Rog/Bs © Securiton AG
PUR outer jacket(mechanical protection)
TPE inner jacket(humidity protection)
Flat ribbon cable
Aluminium screen(shielding)
Kevlar inlays (strain relief)
Sensor chip
System overview – Sensor cable
31.05.2011 / No. 23 / Hma/Büh/Rog/Bs © Securiton AG
SecuriSens® MHD 535 sensor cable –Temperature range
Cable type Temperature range Comment Picture
SD (PU/TPE) -40°C – +85°C Continuously
-40°C – +95 °C Up to 5 hr
-40°C – +120°C Up to 60 sec
31.05.2011 / No. 24 / Hma/Büh/Rog/Bs © Securiton AG
SecuriSens® MHD 535 sensor cable –Temperature range
Cable type Temperature range Comment Picture
HD (ECTFE/TPE) -55°C – +125°C Continuously
FX (PU) -40°C – +85°C
31.05.2011 / No. 25 / Hma/Büh/Rog/Bs © Securiton AG
Level 1: Stub line installation
System overview of MHD 535
SSPRSP
PFM CFM CFM CFM CTM
2 relays (group alarm, group malfunction)
RS232RS422, RS485 Modbus (only SSP, SRG)
ECB
Max. 2000 m, 250 sensors
(Protection PU)
Pro
cessor
Un
it (
PU
)
Sensor cable protection
Connection of 2 sensor cables
SRGRXG
8 group relays (only SRG, RXG), 6 Inputs
RCU (up to 6 pcs, only SRG, RXG)
32 relays
Termination module
31.05.2011 / No. 26 / Hma/Büh/Rog/Bs © Securiton AG
Level 2: redundancy (dual system design)
FT-NET
System overview of MHD 535
2 collective relays (alarm, fault)8 group relays RS232
RCU
Max. 2000 m, 250 sensors
RXG RCU
PFM
ECB
PFM
CTMCFMCFM
CFM CFMCTM
RXG
ECB
RCU
31.05.2011 / No. 27 / Hma/Büh/Rog/Bs © Securiton AG
System overview of MHD 535
2 collective relays (alarm, fault)
8 group relays RS232
Max. 2,000 m, 250 sensors
32 relays (6 pcs. cascadable)
Short-circuit, interruption
remains operative
FT-NET
RXG RSP
RCU
Level 3: double-sided power supply (increased availability)
RXG1
CPM
ECB
RXG2
CPMSSMSSMSSMSSMSSM
RCU
SSM
ECBremainsoperative
31.05.2011 / No. 28 / Hma/Büh/Rog/Bs © Securiton AG
RCU
2 collective relays (alarm, fault)
8 group relays RS232
Max. 2,000 m, 250 sensors
32 relays (6 pcs. cascadable)
FT-NET
RSP
System overview MHD 535Level 3: double-sided power supply
(increased availability)
RXG
CPM
ECB
RXG
CPMSSMSSMSSMSSMSSM
RCU
Short-circuit / interruption
SSM
remains operative
31.05.2011 / No. 29 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535 – Networking with FT-NET
SCADAaccess point
SCADA-Access Point
LegendRSP Remote Signal ProcessorRRG Remote Response GeneratorRAP Remote Access Point
FT-NET
RSP RSP RSP RSP RSP RRG
2
RCU
2.1
RCU
2.2
RCU1.1
RCU1.2
RRG
1
RAP1
RAP2
31.05.2011 / No. 30 / Hma/Büh/Rog/Bs © Securiton AG
System overview of MHD 535
MHD Config software
� Programming / configuration
� Creating groups of sensors (up to 64 response groups)
� Setting prealarms and alarm thresholds (each sensor individually) using absolute value or gradient
� Two-sensor dependency or other links
� Link to external information via digital inputs
� Visualisation� Alarm and status information, temperature profile
� Calibration� Reading in the factory calibration values
� Adjustment to local temperature values if needed
� Maintenance
31.05.2011 / No. 31 / Hma/Büh/Rog/Bs © Securiton AG
System overview of MHD 535
MHD Config software – visualisation
MHD 535
Planning tunnels
31.05.2011 / No. 33 / Hma/Büh/Rog/Bs © Securiton AG
General
� The application may have to be approved by local authorities.
� Country-specific directives always apply!
31.05.2011 / No. 34 / Hma/Büh/Rog/Bs © Securiton AG
Planning tunnels
Important topics:
� System limits
� Sensor spacing 4 m – 20 m (country-specific)
� Redundancy or double-sided power supply
� Accessibility (if possible no cable terminal processor in the tunnel tube)
� Connection to supervisory level systems (SCADA*)
*Supervisory Control and Data Acquisition
31.05.2011 / No. 35 / Hma/Büh/Rog/Bs © Securiton AG
Requirements fire detection in tunnels
� Accurate localisation of the fire
� Sensor distance typical 7 … 10 m
� Visualization of the temperature profile
� High availability
� Reliability of the system
� Integration in control system
� Easy planning, installation and commissioning
� Easy maintenance and repair
� Normative requirements (country specific)
31.05.2011 / No. 36 / Hma/Büh/Rog/Bs © Securiton AG
TFD systems: Overview
31.05.2011 / No. 37 / Hma/Büh/Rog/Bs © Securiton AG
State-of-the-art fire detection concept for road tunnels
CCTV fire information
Visibility monitoring
Alarm verification
Fire brigade Ventilation Traffic light barriers
Line type heat detector
Extinguishingsystem
Redundant fire detector
Two detector dependency
Automatic measures
Detektions- und Steuerungsausrüstung nach EN 54
31.05.2011 / No. 38 / Hma/Büh/Rog/Bs © Securiton AG
Situation of tunnel fire detection in Europe 1
� Linear heat detectors are proved as a safe and reliable method for fire detection in tunnels. They are indispensible for the automatic triggering of
• Fire ventilation routines
• Tunnel closure (traffic lights / barrier)
• Escape route signalisation
� To trigger automatic extinguishing systems, a dual detector dependency or the combination of two independent detection systems is recommended
� Linear heat detectors fulfil the actual requirementsfor reaction speed even at air velocity of 10 m/sec
31.05.2011 / No. 39 / Hma/Büh/Rog/Bs © Securiton AG
Situation of tunnel fire detection in Europe 2
� Smoke detectors / visibility monitors should be used for early fire detection (already mandatory in D, CH)
� With sufficient experience for thresholds and cross-sensitivities an automatic triggering by smoke detectors should be possible (today mostly manual)
� Video analysis might make sense in tunnels with a high risk potential, as they use additional criteria for detection
� Due to the high false alarm rate, it may not be used for automatic detection
31.05.2011 / No. 40 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535: Test with high air velocity
Test setup
� 5 MW fire test according to German RABT standard
� Air velocity 10 m/sec
� Performed in the Hagerbachstollen Sargans (CH)
31.05.2011 / No. 41 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535: Test with high air velocity –measuring data
0
5
10
15
20
25
30
35
Te
mp
era
ture
[°C
]
Time
n1
n2
n3
n4
n5
n6
n7
n8
n9
n10
IgnitionFirst alarm = SensorNo. 4 and 5_ Alarmafter 23s
31.05.2011 / No. 42 / Hma/Büh/Rog/Bs © Securiton AG
Tunnel with curved or rounded ceiling, 2 to 3 traffic lanes
Sensor cable Sensor cable "2" with redundant installation
31.05.2011 / No. 43 / Hma/Büh/Rog/Bs © Securiton AG
Tunnels with flat ceiling, 2 to 3 traffic lanes
Sensor cable Sensor cable "2" with redundant Installation
2 lanes: a > 0.5 m
3 lanes: a > 1 m
31.05.2011 / No. 44 / Hma/Büh/Rog/Bs © Securiton AG
Tunnels with flat ceiling, more than 3 traffic lanes
Sensor cable "A" Sensor cable "3" with redundant installation
Sensor cable "B" Sensor cable "A" and "B" as own cable. Distance a = max. 10 m
31.05.2011 / No. 45 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535 – Installation with double-sided power supply in tunnels
RSP RSP
Up to 2,000 m length
RSP RSP
Up to 4,000 m length
RSP RSP
31.05.2011 / No. 46 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535 – Installation with double-sided power supply in tunnels
RSP RSP
Up to 2,000 m length with centralised connection to FACP
RRG2
Processor units can be mounted in wall recesses (IP 65)
31.05.2011 / No. 47 / Hma/Büh/Rog/Bs © Securiton AG
MHD 535 – Pilot project Felderhalde tunnel (D)
RXG
CPM SSM
RS232
ECB760 m, 108 sensors
SSM
ECB
SSM CPM
RXG
FT-NET (Multi-mode glass fibre, 62.5 / 125 m) with ST connector
SSM
RS232
Fire sector 1 2 3 4 5
5 gr. relays
2 relays (Al, St.)
5 gr. relays
2 relays (Al, St.)
FACP
Loop
PLC
Gateway
MHD 535
Reference projects / Tunnel applications
31.05.2011 / No. 49 / Hma/Büh/Rog/Bs © Securiton AG
Road tunnel: Event example Car fire in Schöneich Tunnel 18.01.2008
0
20
40
60
80
100
120
-600 -400 -200 0 200 400 600 800
Tem
pe
ratu
r [°
C]
Zeit [s]
Sensor 12
Sensor 13
Sensor 14
Sensor 15
Sensor 16
31.05.2011 / No. 50 / Hma/Büh/Rog/Bs © Securiton AG
# Fuel Fire area LBM 1(ADW 511)
LBM 2 LBM 4(TSC 515)
1 Petrol 2 m2 28 s 42 s 13 s
2 Petrol 4 m2 19 s 30 s 11 s
3 Diesel 2 m2 83 s 60 s 31 s
4 Diesel 4 m2 30 s 48 s 17 s
5 n-heptane 1 m2 165 s 98 s 46 s
6 n-heptane 2 m2 37 s 68 s 18 s
7 n-heptane 4 m2 25 s 61 s 13 s
TSC 515: STUVA comparison report 2005
Reference: Brand- und Störfalldetektion in Strassentunneln, Bundesministrium für Verkehr, Oktober 2005 (Fire and fault detection in road tunnels, Federal Ministry for Transport, October 2005)
31.05.2011 / No. 51 / Hma/Büh/Rog/Bs © Securiton AG
Importance of fast detection
� Avoiding fatalities in tunnel fires is mainly driven by self rescue
� Simulations show that the number of fatalities is proportional to the detection time of the fire (or in fact to the time informing the users and their reaction)
� If we reduce the detection time, we also can reduce the number of fatalities
31.05.2011 / No. 52 / Hma/Büh/Rog/Bs © Securiton AG
Project: Krasnopresnenski Tunnel, Moscow
Highway Riga - Moscow
31.05.2011 / No. 53 / Hma/Büh/Rog/Bs © Securiton AG
Tunnel project Krasnopresnenski, Moscow
� 2 tubes each Ø 14.2 m, each with 3 traffic lanes and 1 metro
� 2 escape tunnels each Ø 6.5 m
� 2 independent detection systems:
• 13.5 km temperature sensor cable TSC 515-10
• Parallel with ADW 511A
� Water mist extinguishing system controlled by SecuriPro
31.05.2011 / No. 54 / Hma/Büh/Rog/Bs © Securiton AG
Example: Lieli Bypass (AG – CH)
Redundant installation
Test fire approx. 2.4 MW
31.05.2011 / No. 55 / Hma/Büh/Rog/Bs © Securiton AG
Example: Aarburg Bypass (CH – AG)
Aarburg: Load relief loops
Aarburg: Portal tunnel fortification
31.05.2011 / No. 56 / Hma/Büh/Rog/Bs © Securiton AG
Example: Baregg Tunnel (CH – A1 – AG)
Baregg:
Redundant installation
MHD 535
Reference projects tunnel
31.05.2011 / No. 58 / Hma/Büh/Rog/Bs © Securiton AG
Bypass tunnel Giswil (CH)
Facts:
� N8 Lucerne - Brünig
� Commissioning 05.06.2009
� Stub-line installation
� 2000m MHD 535-10SD
� Parallel 2000m TSC 515 (Redundanz)
� SRG 535 with ModBus- option
� RCU 535 / 28 groups
� Replaces TSC 515 which had frequently damage by lightning; in 2009 and 2010 with the MHD we had no lightning defects
31.05.2011 / No. 59 / Hma/Büh/Rog/Bs © Securiton AG
Felderhalde Tunnel (DE)
Facts:
� B12 bypass Isny
� 1 tube, Röhre, two way traffic
� Commissioning July 2009
� Loop system
� 760 m MHD 535-7 SD
� 2 RXG 535 /ModBus connection via RS232 and Gateway
� 2 SSM + Double SSM
� RABT fire test passed
31.05.2011 / No. 60 / Hma/Büh/Rog/Bs © Securiton AG
Kohlberg Tunnel (DE)
Facts:
� A96 Munich - Lindau
� 2 tubes, directional traffic
� Commissioning July / October 2009
� 2 loop systems
� 2 x 700m MHD 535-4 SD
� 2 RXG 535 /ModBus connection via RS232 and Gateway
� 2 SSM + double SSM
31.05.2011 / No. 61 / Hma/Büh/Rog/Bs © Securiton AG
Seelisbergtunnel, CH, NW-UR
Highway A2 Lucerne - Gotthard
15.12.2009/Rog
31.05.2011 / No. 62 / Hma/Büh/Rog/Bs © Securiton AG
Seelisbergtunnel (CH)
� 2 tubes 9300 m
� Focus on redundancy (cable, processor unit, PLC is all double installed)
� 38 km sensor cable MHD 535 with 20 m sensor distance (stub-line)
� 2 parallel cables with 10 m offset (redundancy)
� Data transmission via ModBus
� Replacement of ADW system
� Commissioning June / November 2010
31.05.2011 / No. 63 / Hma/Büh/Rog/Bs © Securiton AG
Seelisbergtunnel (CH)
31.05.2011 / Nr. 64 / Hma/Büh/Bs © Securiton AG
Seelisbergtunnel (CH)
Why have we been successful?
� Good contacts with operator and designer since many years
� Support during pre-project
� Replacement ADW (existing customer)
� System length restricted to 2 km (safety aspect integrated on our hint)
� Full redundancy (2 cables in parallel due to missing possibility to close the tunnel for repair during the next years)
� Good price
31.05.2011 / Nr. 65 / Hma/Büh/Bs © Securiton AG
Projects B10 Annweiler (DE)
Stauffertunnel, Barbarossatunnel, Löwenherztunnel
� Tunnel length 790 / 900 / 1020 m
� Each tunnel 1 tube, two way traffic
� 1 cable in each tunnel
� Loop system
� 4 sections separated by SSM
� Redundancy of the control units including relay contacts specified
� Temperature values to SCADA system via Modbus Gateway
� Commissioning between August 2010 and mid 2011
31.05.2011 / No. 66 / Hma/Büh/Rog/Bs © Securiton AG
Tunnels B10 Annweiler (DE)
CPM SSM
RS232/RS485
ECB790-1020 m
SSM
ECB
SSM CPM
FT-NET (2 x 2 Multimode-FO (62.5 / 125 m) with ST connector
SSM
RS232
2 Relays (Al, Ft.)9 Gr.- Relays2 Relays (Al, Ft.)
BMZ
Loop
GLT
Gateway
RSPFOO
RXGFOO
RCURCURRGFOO
9 GR
Central control room
SSM SSM
31.05.2011 / No. 67 / Hma/Büh/Rog/Bs © Securiton AG
Projekte B10
Why have we been successful?
� Complete package fire detection (FAS, building detectors, cable)
� Good relations to the contractors
� First reference installations in Germany
� Good price
31.05.2011 / Nr. 68 / Hma/Büh/Bs © Securiton AG
B535 Tunnel Schwetzingen (DE)
� Tunnel length 450 m + 650 m
� 2 tubes, directional traffic
� 1 cable in each tube
� 2 loop systems
� Each tube has 2 sections separated by SSM
� Redundancy of the control units including relay contacts specified
� Temperature values to SCADA system via Modbus Gateway
� Commissioning October 2010
31.05.2011 / Nr. 69 / Hma/Büh/Bs © Securiton AG
FraPort Tunnel (DE)
� Tunnel length 2 x 550 m
� 1 tube, two way traffic plus escape tube
� 1 cable in each tube
� Loop system
� Each tube has 2 sections separated by SSM
� Redundancy of the control units including relay contacts specified
� Temperature values to SCADA system via Modbus Gateway
� Commissioning August 2010