1. USE OF ANDROID MOBILE APP for remote operation of VALVES.
Presented by: Betty Ouko
2018 G2G INNOVATION SEMINAR, PRIDEINN PARADISE RESORT
18TH JUNE - 22ND JUNE 2018

2. Technician, PIC - Technical service Olkaria
BETTY MORAA OUKO
Technician, PIC - Technical service Olkaria
Qualifications:
- Diploma in Electronics and Automation Engineering
- Active member of Geothermal Association of Kenya
Responsibilities:
Her main focus is protection, instrumentation and control;ensuring maximum
availability of all geothermal wellheads power plants.
Key milestones/achievements include:
Currently researching on implementation of Brine skin care products
Vast knowledge in maintenance of power plant equipment in Thermal & Geothermal plants.
JOH-KGN JvW-X1

3. Presentation Outline 1 2 3 Introduction Challenges Solution Benefits
Recommendation
Conclusion

4. INTRODUCTION
Control Valves are used in most KenGen plants. The valves are used to control fluid flow by varying the size of the flow passage as directed by a signal from the controller.
This enables control of pressure, level and flow rate via opening or closing.

5. Valves

6. INTRODUCTION CON’T
HART Communication Protocol (Highway Addressable Remote Transducer) is a hybrid analog+digital industrial automation open protocol.
HART is able to use 4-20 mA systems by superimposing digital communications on top of the 4-20 mA analog signal without disrupting it.
The technology is also employed by other equipment for example Level, Pressure and Temperature transmitters.

7. Hart devices
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Portable HART communication devices include HART 275,374 or 475 with an almost 80cm connector cable.

9. HART CONNECTION

10. HART DEVICE FUNCTIONS Checking device status Setting up of the device
Calibration
Tuning of the device

11. CHALLENGES Limited number of HART devices available.
Time wasting during valve maintenance as the HART battery becomes low.
Rapid Response team accessing this equipment's.
Valve position makes access hard and dangerous.
Reporting valve status.

12. OLKARIA II

13. OLKARIA 1AU LEVEL CV VALVE

14. OLKARIA 1AU STEAM COOLER VALVE

15. SOLUTION
DevCom App.

16. SOLUTION
HART device management has been made much easier now through the introduction of a HART communication app.
The Bluetooth wireless interface between the HART modem and any Windows, Android and iOS (APPLE). device provides user safety and comfort because there are no wires to tangle or trip over.

17. DEVCOM APP FEATURES
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18. Device setup screen

19. COST Benefits Item description Unit(USD) 1 475 communicator 6896.00 2
Field accessory Kit
336.00 3
Power module 4
Power supply and charger
444.00 5
Lead set with connectors
111.00
Clearing, duties and taxes
Sub total
18,126.00
VAT (16%)
TOTAL
21,026.16
In KES
2,139,622.04
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1 dollar to Kes

20. COST BENEFIT ANALYSIS AMS TREX DEVICE
The device was bought at approximately: 1,200,000.00
PROCOM SOL APP
Downloading app Free (Play store)
App License 800 USD (Kes 81,408.00)
One off
If there would be any retrofitting:
Retrofitting Kes 900,000
TOTAL KES 981,408.00

21. COST BENEFIT ANALYSIS Total saving comparing with HART 475 of:
No retrofit 2,058,214.04
With retrofit 1,158,214.04
Total saving compared to AMS TREX device:
No retrofit 1,120,000
With retrofit 220,000

22. OVERALL BENEFITS Reduce plant downtime increasing availability.
Safety and comfort of the employee.
Less costly
Makes decision making easy.

23. RECOMMENDATION
We propose to do the 10 days’ free trial software license given by the manufactures after which we shall purchase license for one Procom Sol application to be used in Olkaria 1AU as the pilot plant before being rolled one to other plants.
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