Presentation Final Elements SIL Fire Suppression

1. SIL Suitable Final Elements
FUNCTIONAL SAFETY OF
FIRE & GAS SYSTEMS
SA FIRE PROTECTION

2. FUNCTIONAL SAFETY
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 2SIL Suitable Final Elements

3. DEFINITION OF FUNCTIONAL SAFETY
 Safety is the absence of an
unacceptable risk of physical injury to
people or damage to the properties
 Functional Safety is part of the overall
safety which depends on the correct
functioning of a safety-related system
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 3SIL Suitable Final Elements

4. SAFETY INSTRUMENTED SYSTEM (SIS)
 A Safety Instrumented System (SIS) or
Safety-related System is an appropriate
system required to reduce the risk
(shown by a hazard analysis) of the
Equipment Under Control (EUC)
 A SIS performs one or more Safety
Functions to reduce the risk
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 4SIL Suitable Final Elements

5. REQUIREMENTS TO FUNCTIONAL SAFETY
Two types of requirements are necessary
to achieve Functional Safety:
 Safety Function Requirements: the
scope of the Safety Function, derived
from the hazard analysis
 Safety Integrity Requirements: the
probability that the Safety Function will
be performed satisfactorily, derived
from the risk assessment
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 5SIL Suitable Final Elements

6. THE STANDARD IEC 61508
IEC 61508 “Functional Safety of electrical
/electronic / programmable electronic
(E/E/PE) safety-related systems”:
 Covers all the safety lifecycle activities
 Contains requirements for preventing
failures and controlling failures,
ensuring safety even when faults are
present
 Specifies the techniques and measures
to achieve the required Safety Integrity
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 6SIL Suitable Final Elements

7. SAFETY INTEGRITY LEVEL (SIL)
 Safety Integrity is the probability that
the SIS will perform the required Safety
Functions satisfactorily
 IEC 61508 specifies 4 levels of safety
performance for a Safety Function,
called Safety Integrity Level (SIL)
 The Standard details the requirements
necessary to achieve each Safety
Integrity Level. SIL1 is the lowest level
and SIL4 is the highest
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 7SIL Suitable Final Elements

8. SAFETY INTEGRITY LEVEL (SIL)
FUNCTIONAL SAFETY
• Definition
• SIS
• Requirements
• IEC 61508
• SIL
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 8SIL Suitable Final Elements
Low demand mode of operation:
frequency of demands for the SIS not
greater than once per year, and not
greater than twice the proof-test
frequency
Safety Integrity Level (SIL)
Average Probability of Failure
on Demand (PFDavg)
4 ≥ 10-5 to < 10-4
3 ≥ 10-4 to < 10-3
2 ≥ 10-3 to < 10-2
1 ≥ 10-2 to < 10-1

9. FIRE & GAS SYSTEM
FUNCTIONAL SAFETY
F&G SYSTEM
• Objectives
• Effectiveness
• Components
• Final Elements
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 9SIL Suitable Final Elements

10. TASKS OF F&G SYSTEM
The main tasks of a F&G system are:
 Detect any hazardous fire or gas
condition
 Alert the personnel in the monitored
area
 Activate the control and mitigation
systems
FUNCTIONAL SAFETY
F&G SYSTEM
• Tasks
• Effectiveness
• Components
• Final Elements
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 10SIL Suitable Final Elements

11. F&G SYSTEM EFFECTIVENESS
The F&G system Effectiveness is the
product of three factors:
 Detection Coverage: the fraction of the
monitored area in which an eventual
hazard would be detected
 Mitigation Effectiveness: the
probability that the activation of the
Final Elements would reduce the
consequence of a defined hazard
 F&G Safety Availability (SA): 1-PFDavg
FUNCTIONAL SAFETY
F&G SYSTEM
• Tasks
• Effectiveness
• Components
• Final Elements
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 11SIL Suitable Final Elements

12. A F&G system consists of:
 Detectors
 Logic Solver
 Final Elements
A chain is only as strong as its weakest
element
COMPONENTS OF F&G SYSTEM
FUNCTIONAL SAFETY
F&G SYSTEM
• Tasks
• Effectiveness
• Components
• Final Elements
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 12SIL Suitable Final Elements
LOGIC
SOLVER
FINAL
ELEMENTS
DETECTORS

13. The F&G Effectiveness is related to the
Safety Availability of all its components
SA has developed
SIL suitable Final Elements
for the main fire-fighting systems
FINAL ELEMENTS
FUNCTIONAL SAFETY
F&G SYSTEM
• Tasks
• Effectiveness
• Components
• Final Elements
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 13SIL Suitable Final Elements
LOGIC
SOLVER
FINAL
ELEMENTS
DETECTORS
NIAGARA
ELECTRIC
MONITORS
ELECTRIC
ACTUATORS
VDD
DELUGE
VALVES

14. ELECTRIC MONITOR
NIAGARA SERIES
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
• Description
• Main features
• Advantages
• Application
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 14SIL Suitable Final Elements

15. DESCRIPTION
 The fire-fighting monitors
Niagara series are electric
type remote controlled
water cannons, intended to
deliver large amount of water
towards remote targets.
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
• Description
• Main features
• Advantages
• Application
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 15SIL Suitable Final Elements
 The monitor architecture comprises
of a Logic Controller and one or more
monitor assemblies

16. MAIN FEATURES
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
• Description
• Main features
• Advantages
• Application
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 16SIL Suitable Final Elements
 Automatic self-diagnostic
analysis
 Remote controlled
 Designed for sea water and
water foam solution
 Suitability for SIL2 systems
validated by Bureau Veritas

17. ADVANTAGES
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
• Description
• Main features
• Advantages
• Application
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 17SIL Suitable Final Elements
Automatic self-diagnostic analysis: at
regular intervals the self-diagnostic
system in the Logic Controller checks the
correct operation on given commands
 Constant monitoring of any possible
failure of monitor and nozzle
 Reduction of the probability that
faults, taking place between regular
maintenance, will pass undetected
 Increased reliability on demand

18. APPLICATION
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
• Description
• Main features
• Advantages
• Application
ELECTRIC ACTUATOR
VDD DELUGE VALVE
28/02/2015 18SIL Suitable Final Elements
Designed for petrochemical
jetty and marine harbor and
structure cooling
Recommended for those systems which
require:
 A low probability of failure on demand
 A fire protection system with a high
Safety Integrity Level
 A large amount of water towards
remote targets

19. DOUBLE COIL
ELECTRIC ACTUATOR
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
• Description
• Main features
• Application
VDD DELUGE VALVE
28/02/2015 19SIL Suitable Final Elements

20. DESCRIPTION
 The double coil electric actuator has
been developed to sharply reducing
the probability of failure of a pilot
cylinder of a gaseous based fire
protection system (carbon dioxide,
inert gases, halocarbons) or a water
mist system
SIL Suitable Final Elements
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
• Description
• Main features
• Application
VDD DELUGE VALVE
28/02/2015 20

21. MAIN FEATURES
 Redundancy: the actuator has two coils
which receive two independent signals
from the Logic Solver. If one coil should
fail, the other coil is able to open the
cylinder valve
 Suitability for SIL2
systems validated
by Bureau Veritas
SIL Suitable Final Elements
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
• Description
• Main features
• Application
VDD DELUGE VALVE
28/02/2015 21

22. APPLICATION
Designed for the protection of gas
turbines and their generators, electronic
rooms and general installations on FPSO
Recommended for those systems which
require:
 A low probability of failure on demand
 A fire protection system with a high
Safety Integrity Level
SIL Suitable Final Elements
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
• Description
• Main features
• Application
VDD DELUGE VALVE
28/02/2015 22

23. DOUBLE CHAMBER DELUGE VALVE
MODEL VDD
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 23SIL Suitable Final Elements

24. DESCRIPTION
 The VDD deluge valve combines all the
functions of a traditional deluge valve
with a fully redundant architecture,
designed to achieve a higher Safety
Availability
 The VDD deluge valve
has two priming
chambers, each one
provided with its own
diaphragm and trim
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 24SIL Suitable Final Elements

25. PRINCIPLE OF OPERATION
 In the set position (valve closed)
The pressure of the water trapped in
the priming chambers holds the
diaphragms on the valve seats, keeping
the valve closed
 In fire condition (valve open)
The pressure is released from the
priming chambers. The water supply
pressure forces the diaphragm off the
seats, opening the valve
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 25SIL Suitable Final Elements

26. MAIN FEATURES
 Fully redundant system
 Built-in emergency bypass line that
operates on both priming chambers in
“hot back-up”
 Continuous fire protection
 Designed to overcome a double failure
 Suitability for SIL3 systems validated by
Bureau Veritas
 Under UL testing for UL/cUL Listing
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 26SIL Suitable Final Elements

27. ADVANTAGES
Built-in emergency bypass line
 Each priming chamber provides the
nominal design waterway for the fire
protection system
 The system is fully redundant
 The time to respond to a failure is
reduced to zero
 No need of an external bypass line on
the skid: reduction of dimensions,
weight and cost of the skid
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 27SIL Suitable Final Elements

28. ADVANTAGES
Designed to overcome a double failure
 A hydraulic bridge between the trims
allows each trim to control both the
diaphragms
 In case of failure of one trim, the other
trim can open both the priming
chambers
 The VDD deluge valve can overcome a
double failure
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 28SIL Suitable Final Elements

29. ADVANTAGES
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 29SIL Suitable Final Elements
Designed to overcome a double failure
 Fault Tree of the VDD deluge valve

30. ADVANTAGES
Fire protection system always in service
 Two built-in isolation
valves allow alternate
in-line maintenance
to be performed
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 30SIL Suitable Final Elements
 An interlock system prevents
the accidental or incorrect
rotation of the isolation valves

31. APPLICATION
 Made of Ni-Al-Bronze, a
highly resistant material
 Specifically designed for
harsh environments, such
as oil & gas onshore and
offshore and chemical and
nuclear plants installations
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 31SIL Suitable Final Elements
 Sea water, foam
concentrate and
water foam solution

32. APPLICATION
Recommended for those systems which
require:
 A low probability of failure on demand
 A fire protection system with a high
Safety Integrity Level
 Continuity of fire protection during
maintenance or repair
 Reduction of weight, dimension and
cost of the skid
FUNCTIONAL SAFETY
F&G SYSTEM
NIAGARA MONITOR
ELECTRIC ACTUATOR
VDD DELUGE VALVE
• Description
• Principle of operation
• Main features
• Advantages
• Application
28/02/2015 32SIL Suitable Final Elements

33. REFERENCE CONTACT
SA Fire Protection
Viale Europa 121-123
Cascina ( PISA ) – Italy
Ph. +39.050.70.30.06
Fax. +39.050.70.35.80
export@sasrl.it