1. Safety Excellence Yokogawa Electric Corporation December 2006
(Self introduction)
In this session I would like to share with you the vision and concept of our “Safety Excellence” solutions.
December 2006
Yokogawa Electric Corporation

2. VigilantPlant Operational Excellence model
Excellence in production, asset, and safety sustained over the life cycle of your plant
Production Excellence: for operational agility and 　　　
adaptability
Asset Excellence: for Asset availability and utilization
Safety Excellence: for health, safety, and
environmental (HSE) protection
Sustained over the life cycle of your plant
Before I jump into the main theme, let me position the Safety Excellence initiative in the overall context of the VigilantPlant Operational Excellence model.
This model is a visual representation of the focus areas of Yokogawa solution development. Through the VigilantPlant initiative, Yokogawa aims to bring excellence in production, asset, and safety sustained over the lifecycle of our customers’ plants.
Safety Excellence is an integral part of this model and brings together various Yokogawa initiatives that help our customers to prevent catastrophic failures and ensure HSE protection.
Another important element of this model is Asset Excellence, which secures asset availability and utilization. Upon the firm foundation of safe and available plant, Production Excellence enables operational agility and adaptability. As a common centerpiece, the Lifecycle Excellence perspective is firmly embedded in all three, improving and sustaining the three excellence initiatives for long term business success.
All of these excellence initiatives are essential for the overall operational excellence, but if the foundation is compromised, the whole model collapses. Therefore Yokogawa is committed to sustaining and further improving our products and services that facilitate Safety Excellence. It is my pleasure to share the latest status of our Safety Excellence initiative today.
Safety Excellence

3. What is Safety Excellence? The Yokogawa solutions Your benefits
Agenda
What is Safety Excellence?
The Yokogawa solutions
Your benefits
Roadmap for the future
Safety consulting & services
This is the overall agenda of my presentation.
First I’d like to quickly define the basic perspectives for Safety Excellence.
Then I will introduce the Yokogawa solutions that enable Safety Excellence, and summarize your benefits by comparing the Yokogawa integrated solutions against a less integrated ad-hoc solution.
Then I will share our roadmap for the future, and touch on our safety consulting and service capabilities.
If this agenda looks OK, I will proceed to the main theme right away.
Safety Excellence

4. What is Safety Excellence?
Thank you. As a starter, let me briefly introduce the key issues that come into play when we discuss Safety Excellence
How to address the entire loop to maximize both safety and availability
Safety Excellence

5. Maximizing both safety and availability
Integrated solutions designed with the entire safety loop in mind maximize both safety and availability at the same time
Integrated solutions not only reduce engineering time and cost but also minimizes engineering mistakes that compromise safety and availability
Sensors
Logic Solver
Asset Management
Scheduled partial stroke test (PST)
Device status & diagnostics
Operations
Process alarms
& device alarms
ProSafe-RS
DPharp EJX
SVI-Ⅱ ESD
Process
data
Output signal
Final Elements
In a nutshell, the goal of the Safety Excellence initiative is to maximize both safety and availability of our customer’s plants at the same time.
To achieve this goal, integrated solutions designed with the entire safety loop in mind is the best option. Integrated solutions not only reduce engineering time and cost but also minimizes engineering mistakes that compromises safety and availability.
Safety Excellence

6. Assurance of safety (=safety integrity) is achieved by the entire loop
What is safety?
Bring processes to safe conditions when needed
Sensor
Logic Solver
Final Elements +
Assurance of safety (=safety integrity)
is achieved by the entire loop
Going back to the basics, what is safety? Safety is achieved by putting in place mechanisms that bring processes to safe conditions when needed.
The basic unit of such safety mechanisms is the safety loop. A safety loop consists of sensors that detect abnormal conditions, the logic solver that executes safety logics, and final control elements that carry out the necessary release and/or shut off actions. As far as such safety loops are properly installed, basic level of safety can be achieved. In the old model that used simple signals to trigger the safety loops, however, there was little room to add mechanisms to prevent false trips. Also missing was the capability to manage the conditions of the installed safety loop devices through diagnostics and online asset management systems.
For customers who wish to run their plants safely and efficiently, availability of assets is equally important as safety. The old model was not sufficient to solve the availability side of the equation.
In the old model, simple signals (e.g. on/off) were used to trigger the safety loop. While assuring a certain level of safety, this model lacked:
- Mechanisms to ensure availability (preventing false trips)
- Intelligent information exchange (diagnosis information, etc.)
Safety Excellence

7. How about availability?
Malfunction of a safety loop device can cause a false trip and shut 　the process down
By far the biggest source of malfunction is the final element (valve)
30%
10%
60%
Logic solver
malfunction
Sensor
Valve
Primary cause of safety applications failure
When we look into the availability side of the equation, avoiding false trips caused by safety loop device malfunctioning is the core issue.
And by far the biggest source of safety device malfunctioning is the final elements. The sensors come next. So avoiding malfunctioning of valves and sensors can go a long way to improving plant uptime.
One of the most typical valve malfunction cases is caused by solenoid malfunction that cuts the air supply and causes a false trip.
Another type of valve malfunctioning has a serious safety implication. Moving parts of shut-off valves left motionless for a long period of time can develop problems such as stuck valves. To ensure the required level of safety, the customers needed to implement full stroke tests at a regular interval.
Typical valve malfunction:
- Solenoid malfunction. Cuts air supply and causes false trip
Shut-off valve malfunction. Moving parts left motionless for a long period 　of time develop problems such as stuck valves.
Safety Excellence

8. The Yokogawa solutions
Now that we have quickly reviewed the basic issues surrounding the Safety Excellence challenge, let me proceed to explain how Yokogawa helps our customers to address those issues in an effective and efficient manner.
Addressing the entire loop for safety and availability
Safety Excellence

9. Why not have the best of both worlds?
The vigilant approach delivers both uptime and peach of mind
Operators
Asset Manager
now have an all-in-one interface
to effectively handle both control
and safety loops.
can easily diagnose asset conditions,
ensuring asset availability while optimizing maintenance.
ProSafe-RS Integrated Safety System
PRM Plant Resource Manager
As I mentioned earlier, the Yokogawa approach aims at maximizing both availability and safety at the same time, compromising neither.
We achieve this by delivering the right information to the right people at the right time.
The unified human machine interface arms the operators with an all-in-one interface to both control loops and safety loops, improving visibility of abnormal situations. Meanwhile, the asset manager can easily diagnose asset conditions, using an integrated asset management system that covers both control loop assets and safety loop assets.
Later I will share with you a few cases that underscore the benefits of the integrated approach, but before that, let me quickly introduce the key players that enable Yokogawa integrated solutions.
DPharp EJX
Digital Transmitter
SVI-Ⅱ　ESD Digital Positioner
Safety Excellence

10. Certified transmitters (pressure)
DPharp EJX
Pressure Transmitter
The world’s first and only fully digital pressure transmitter
Standard models are certified for use in SIL2/3 applications
Key Features:
- Certified IEC compliant by TÜV and Exida
- Inherently fail-safe silicon resonant sensor and reverse calculation mechanism secure 　 a safe failure function (SFF) of 93.2%
- Industry-leading PFD avg = 1.49E-04/year
- Inherently fail-safe silicon resonant sensor
DPharp EJX series pressure transmitter is the world’s first and only fully digital pressure transmitter. EJX standard models are certified by TÜV for use in SIL2/3 applications. This means our customers do not need to manage special types of transmitters or special option parts for safety applications. We strongly believe that, for our customers, safety is not an option. If so, safety should not be an option in the sensors we deliver, either. That is the philosophy behind making our standard model transmitters certified by TÜV.
Safety Excellence

11. Certified transmitters (temperature)
YTA110/310/320 Temperature Transmitter
■　Not only high-end models YTA310/YTA320 but also middle-range
model YTA110 is certified by TÜV
■　SIL2/3 capability is not option
- No additional cost
- Yokogawa guarantees high reliability both for safety and general usage products
Key Features:
- Certified IEC compliant by TÜV and Exida
- SIL2 capability for single use and SIL3 capability for dual use
- The unique reverse calculation method secures a safe failure function (SFF) of 92%
- Failure rate of Fail Dangerous Undetected　(λdu) = 53 FIT
- Lifetime is 50 years
YTA series temperature transmitter is also certified by TÜV for SIL2/3 applications.
Not only the high-end models YTA310/YTA320 but also the middle-range model YTA110 is certified by TÜV.
Safety Excellence

12. Integrated safety controller
Integrated Safety System
The world’s first truly integrated safety controller
SIL3 protection with simple, single configuration
Unified human-machine interface
Key Features:
- TÜV certified SIL3 protection in single configuration
- Compact modules fitting small to large applications
- Flexible versatile modular redundant (VMR) architecture
- Dual redundant configuration maximizes process availability
- SIL3 safety communication between safety controllers using a common network with the control system
- Inherits (seven 9’s) pair & spare CPU technology of CENTUM DCS
- Supports the HART communication; enables PRM to integrate diagnostic information from intelligent safety devices
ProSafe-RS is the world’s first truly integrated safety controller. It enables SIL3 protection with simple, single configuration.
Its unified human-machine interface with our CENTUM DCS brings improved visibility into abnormal situations.
The latest upgrade made ProSafe-RS seamlessly connectable to our open and secure control network Vnet/IP, enabling certified safety communications over the same physical network without compromising the logical separation and integrity.
Safety Excellence

13. TÜV Certification had been certified as SIL3 by TÜV
on 10th March, 2005.
R1.02 has been certified on 23th October. 2006
IEC 61508, Part1 - 7:2000 IEC 61511: 2004 IEC : Feb. 2003
EN 298: October
EN :
NFPA 85: 2001
EN 54-2:
NFPA 72: 2002
ProSafe was certified as SIL3 by TÜV on 10th March, And release R1.02 has been certified 23th Oct. 2006, too
The ProSafe-RS certification covers not only IEC61508 which is indispensable for safety system but also IEC61511 that defines functional safety for the process industry sector, as well as standards for burner management system and Fire &Gas system.
Safety Excellence

14. Certified valve positioner
SVI-Ⅱ ESD Digital Positioner
Smart solenoid certified for use in SIL3 applications
Provides advanced diagnostics using the HART protocol, including partial stroke testing
Key Features:
- Non-contact position sensor
- SIL3 rated when energized
- Analog and digital diagnostic feedback
- Multiple sensors for diagnostics
- User control of stroke testing
- Graphic representation of partial stoke
- Stroke test completely in concert with / or independent from safety systems
※ Yokogawa is also working with Flowserve, Metso Automation, and Samson SG for safety valve collaboration solutions
SVI-II ESD is a digital positioner from our business partner, Dresser Masoneilan, which is currently under development. SVI-II with smart solenoid is to be certified for use in SIL3 applications.
It provides advanced diagnostics using the HART protocol, including partial stroke testing.
In addition to our partnership with Dresser, we are also collaborating with Flowserve, Metso, and Samson to develop diagnostic solutions using open standards.
p.s. ESV-II ESD will be released in the 1st half of 2007.
Safety Excellence

15. Integrated asset management system
Plant Resource Manager
Integrated asset management platform maximizes asset availability
Keeps operators and maintenance crew fully informed of the current performance and anticipated conditions of plant assets
Key Features:
- Intuitive visual interface to manage diagnostics information from intelligent devices
- Polls HART devices regularly to collect and distribute diagnostics information
- ValVueII plug-in applications on PRM manages scheduled PST
PRM is our integrated asset management platform that helps our customers to maximize asset availability.
It keeps both operators and maintenance crew fully informed of the current performance and anticipated conditions of plant assets.
Safety Excellence

16. Your benefits The total impact of the integrated approach
Now that I have quickly introduced the key players, let me demonstrate the benefits of the Yokogawa integrated approach as compared to a less integrated, ad-hoc solution.
The total impact of the integrated approach
Safety Excellence

17. Comparison study by exida
A significant difference in availability, safety, and total cost of ownership
Yokogawa integrated
solution
Ad-hoc solution
The Yokogawa integrated solution:
Single EJX pressure transmitter, ProSafe-RS SIL3 logic solver, single remote actuated ball valve with SVI-II ESD.
2oo3 Pressure transmitters,
SIL3 logic solver,
single remote actuated ball valve with 3 way solenoid.
Description
>Doubles safety loop availability
MTTF
39 years
20 years
>Triples safety
PFDavg / RRF
8.98E-3 / 111
2.68E-2 / 37
>Extends valve proof test interval by ten times
Proof test
Interval (Valve)
5 years
6 months
Let me first share a quick upfront summary of the customer benefits. This comparison table is made by excida, the safety consulting firm, after benchmarking the Yokogawa solution against a less integrated, ad-hoc solution.
The first index is an indicator of availability: mean time to failure spurious, or MTTF. While the ad-hoc solution only gets to MTTF of 20 years, the Yokogawa integrated approach doubles this availability index to 39 years.
The second index is an indicator of safety: probability of failure on demand or PFD average, and risk reduction factor or RRF. The Yokogawa integrated approach triples safety compared to the ad-hoc solution.
The third index is an indicator of maintainability: valve proof test interval. While the ad-hoc solution requires the customer to do a proof test every 6 months, the Yokogawa integrated approach requires a proof test only every five years, extending the proof test interval by ten times.
Finally, the Yokogawa integrated approach lowers both initial capital costs and lifecycle costs for the customer.
>Lowers capital cost and lifecycle cost
Capital cost
Lower
Higher
Lifecycle cost
Low
Very High
MTTFS : mean-time-to-failure spurious
PFD : probability of failure on demand
RRF : risk reduction factor
Safety Excellence

18. A case in point - avoiding false trip
For example... 　　 The certified EJX detects internal problem with diagnostics
EJX sends a 3.8mA signal to ProSafe-RS
ProSafe-RS recognize the signal as diagnostics and alerts the operator
Operations and maintenance collaborate to fix the problem while avoiding unnecessary shutdown
Sensors
Logic Solver
Asset Management
Scheduled partial stroke test (PST)
Device status & diagnostics
Operations
Process alarms
& device alarms
ProSafe-RS
DPharp EJX
SVI-Ⅱ ESD
Final Elements
Operator
alert
Output Normal
No false shutdown
Device alarm
You might be wondering how the Yokogawa integrated approach creates such a difference, so here is a case in point.
Let us suppose that a safety transmitter develops an internal problem, although it is quite a rare case in a Yokogawa transmitter. In the off chance of an internal problem, the EJX transmitter sends a 3.8mA signal to ProSafe-RS. ProSafe-RS recognizes this signal as a diagnostic signal and alerts the operator. Since this is an internal problem of the transmitter, ProSafe-RS keeps sending the normal output signal to the valve, avoiding false shutdown.
Both the operators and maintenance crew can take the necessary measures to correct the problem while avoiding an unnecessary downtime.
Safety Excellence

19. A case in point - integrated asset management
For example...
PRM integrates EJX and SVI II device conditions through ProSafe-RS. PRM thereby integrates safety devices into a single unified plant asset management database
PRM helps preventive and predictive field device maintenance. PRM manages valve partial stroke test information and executes scheduled PST through ProSafe-RS
Sensors
Logic Solver
Asset Management
Scheduled partial stroke test (PST)
Device status & diagnostics
Operations
Process alarms
& device alarms
ProSafe-RS
DPharp EJX
SVI-Ⅱ ESD
Final Elements
Device condition
PST Command
Scheduled PST
Here’s another illustration of the clear benefits of the integrated approach.
Both EJX and SVI-II are intelligent devices equipped with diagnostics capabilities. The diagnostics information is consolidated in PRM through ProSafe-RS, enabling the maintenance crew to manage device conditions in a single unified database. The maintenance crew can implement preventive and predictive maintenance effectively on safety assets as well as control assets.
PRM is also equipped with application software that executes and manages scheduled valve partial stroke testing.
Yokogawa can guarantee such clear benefits of integration because Yokogawa designs collaborative functionalities into key components with the ultimate customer benefits in mind. Ad hoc integration of systems and devices supplied by separate vendors means more engineering time, more costs, and less collaborative benefits.
Safety Excellence

20. Roadmap for the future
Next let me share with you our roadmap for the future, how we plan to keep improving our Safety Excellence solutions.
Upcoming enhancements and future-oriented initiatives
Safety Excellence

21. VigilantPlant Master Roadmap
Operational Agility & Adaptability
Production Excellence
Asset Availability & Utilization
Production mgt
Asset Excellence
Health, Safety & Environment
Asset mgt
Alarm mgt, DCS-SIS integration
Safety Excellence
Completion of VigilantPlant Operational Excellence solutions
VigilantPlant evolution
VigilantPlant & SE launch
AE launch
PE launch
Here is the overall roadmap of the VigilantPlant solutions, corresponding to the Operational Excellence model I mentioned at the beginning.
The release of the ProSafe-RS in 2005 spearheaded the Safety Excellence initiative, which continue to evolve towards This year we have upgraded ProSafe-RS to R1.02 while releasing the SIL2/3 certified YTA temperature transmitter.
FieldMate, PRM
ProSafe-RS
EJX SIL2/3
RS　R1.02
YTA SIL2/3
RS　R1.03
DYF YVP SIL
2005
2006
2007
2008
Lifecycle Excellence
Safety Excellence

22. ProSafe-RS as Safety Excellence platform
“This is beginning of the end of
diverse and separated safety system.”
ProSafe-RS is the core platform of the Safety Excellence solution and has been well received since its launch.
One industry expert commented that “this is the beginning of the end of diverse and separated safety system.” Indeed we see ProSafe-RS as ushering in a new era for safety applications.
Safety Excellence

23. ProSafe-RS - technical evolution of SIS
SIS is core platform of Safety excellence.
True Integration
DCS Evolution # High performance/Reliable technology - Control BUS / IO BUS - HMI # Pursuing new technology - Fieldbus integration
1993
1998
ABC
CENTUM CS
ICS
EWS
PICS
Vnet
10 MBPS
Dual Redundant
Token Pass
CENTUM CS3000
HIS
PFCS
KFCS
LFCS
2005
1983
1988
New SIS
COPS2
CENTUM V
CFFS
CFCS2
COPSV
CFCD2
HF-Bus
1MBPS
Dual Redundant
Token Pass
CENTUM-XL
EOPS
CFCS
EFCD
ENGS
SIS Evolution # Unified Architecture # Scalable System # Flexible System # Robust, reliable and integrated comm. # Integrated HMI # Sensor Validation # PST
1975
Despite the fact that both DCS and SIS are installed in the same processes, they used to be completely independent in the past.
While DCS made a lot of progress by incorporating many user-oriented new functionalities, SIS stayed more or less the same.
The release of ProSafe-RS in 2005 brought a significant breakthrough both in terms of SIS functionalities and DCS-SIS integration.
CENTUM
CFCD
CFCS
COPS
F-Bus
250 KBPS
Dual Redundant
Token Pass
ModBus
PLC
Panel/
Single
Loop
Solid-State
Relay
Safety Excellence

24. ProSafe-RS - vote of confidence
Total 70,000 IOs with 102 projects (as of August 2006)
Ethylene
Lacq Gas Filed, Congo FPSO
4 Projects for Air Separator
Indonesia LNG (on/off-shore), China LPG, UK Offshore Gas Filed
Angola onshore Terminal, Nerefco (Rotterdam)
LNG Terminal, UK & Italy
Methanol 1 Revamping
Refinery Modernization
Refinery modification
Offshore, Mumbai
Natural Gas Dev.
Sand Oil, Canada z
Mitsubishi Chemical
TOTAL
Air Liquide BP
ChevronTexaco
ExxonMobil
SABIC(Al-Razi)
PEMEX
Petrobras
ONGC
Shell China E&P
BA Energy
The best proof of the innovativeness of the ProSafe-RS is the vote of confidence we received from customers around the world.
Since its release in February 2005, we have already booked over 100 ProSafe-RS projects from first class customers all over the world. Please take a look at these stellar names of uses, who decided to become the early adopters of the integrated approach.
The safety system market is known as a very conservative market. This rapid rate of ProSafe-RS adoption surprised the industry experts.
Safety Excellence

25. ProSafe-RS - further improvements in 2006
Vnet/IP Integration -Enhancements of CS3000 Integration
Functional Improvements
- AO - Remote I/O
The initial release of ProSafe-RS, however, was just the beginning.
This year, we released ProSafe-RS R1.02, which represents our continued efforts to improve ProSafe-RS as the core platform for Safety Excellence.
In addition to core functionality improvements such as AO and remote I/O, this new release enables ProSafe-RS to be seamlessly connected to Vnet/IP. This further improves ProSafe-RS integration with CENTUM CS 3000 and set the stage right for the Production Excellence imitative.
The new release also enables better integration of device diagnostic information through ProSafe-RS and PRM, using the HART protocol. Integration of safety assets into a unified asset management database makes the Asset Excellence initiative more comprehensive and well integrated.
Here again, the overall Operational Excellence model is helping us drive the Safety Excellence initiative in the right direction, ensuring synergy with the other key excellence initiatives.
Integration with PRM and Field Devices
-AI with HART 　　-AO with HART
Safety Excellence

26. Safety Excellence initiative continues
DYF -SIL2/3
2010
ProSafe R1.02 -Vnet/IP Integration -Enhancements of
CS3000 integration
2008
2007
YVP/FVP -SIL2/3
YTA - SIL2/3
ProSafe-RS R1.03
ProSafe R1.02 -AI with HART
-AO with HART
ProSafe-RS R.1.01
- SIL3
ProSafe SLS
-SIL4
2005
ProSafe-RS
- ABS, Lloyds, BV
Type n, FM NI
To take a longer-range view, Yokogawa has been investing in safety technologies since 1960.
Towards 2010, we keep expanding our safety solutions to serve our customers’ safety related needs in a more comprehensive manner.
2000
EJX -SIL2/3
1997
ProSafe PLC
1960
ProSafe SLS -AK7
Safety Excellence

27. Expanding certified field instruments line up
Safety is not an option - standard field instruments certified for SIL2/3 applications without any add-on component.
Pressure
Temperature
Flow
Positioner
SIL2/3
SIL2/3
SIL2/3
SIL2/3
We will further expand our certified field devices, applying the same “safety is not an option” philosophy.
Next in line is the vortex flowmeter, which we plan to get certified in 2007.
EJX
YTA
DYF
YVP/FVP
Done
Done
2007
2008
Safety Excellence

28. Keep supplying the SIL4 system
ProSafe series cover all safety levels (SIL1 to SIL4).
Inherent safety system
Over 1,000 systems from 1960’s
Top level of sophisticated and superior Fail-safe design
Meets AK7/SIL4 requirements
SIL4 Certification by
Solid-state base
We are also unique in our safety system line up that covers from SIL1 to SIL4 applications.
We keep supplying the SIL4 certified ProSafe-SLS, which is well accepted in very severe applications such as high integrity pressure protection systems (HIPPS).
Safety Excellence

29. Safety consulting & services
In addition to all these best-in-class products, Yokogawa delivers professional safety consulting and services.
Certified organization and experts at your service
Safety Excellence

30. Certified organizations
A worldwide network of over 200 engineering experts ensures IEC61508/61511 compliant safety solution implementation
Safety experts in your region at your service for:
- Hazop studies
- Loop SIL calculation
- etc.
We have a worldwide network of over 200 engineering experts that ensures IEC61508/61511 compliant safety solution implementation.
Safety experts in your region are at your service for Hazop studies, loop SIL calculation and so on.
Safety Excellence

31. Conclusion Yokogawa value propositions with Safety Excellence
Now let me wrap up my presentation by repeating the Yokogawa Safety Excellence value proposition.
Yokogawa value propositions with Safety Excellence
Safety Excellence

32. For your Safety Excellence Yokogawa helps to:
Reduce blind spots
Unified operator interface to control and safety
SEE
CLEARLY
Avoid surprises
Integrated diagnostics and asset management
KNOW
IN ADVANCE
Preempt bottlenecks
Optimum safety and maximum uptime
ACT
WITH AGILITY
For your Safety Excellence, Yokogawa helps to:
reduce blind spots with unified operator interface to control and safety;
avoid surprises with integrated diagnostics and asset management;
and preempt bottlenecks to achieve optimum safety and maximum uptime.
Yokogawa integrated solutions cover all your safety requirements, maximizing safety and availability
Yokogawa integrated solutions covers all your safety requirement, maximizing safety and availability.
Safety Excellence

33. Safety Excellence Solutions that maximize both safety and availability.
Thank you very much for your attention.
Safety Excellence

34. Appendix
Safety Excellence

35. FF-SIS
FF-SIS aims to add safety communications protocol in FOUNDATION fieldbus communications
Protocol itself is approved by TÜV. Testing and evaluation using prototype equipment is
expected to start towards the end of 2007
FF-SIS aims to add safety communications protocol in FOUNDATION fieldbus communications. Protocol itself is approved by TÜV. Testing and evaluation using prototype equipment is expected to start towards the end of 2007
Safety Excellence

36. FF-SIS Yokogawa is an active member of the FF-SIS work group
Safety Excellence