SIL in Power Stations

Bernhard HoffmannRWE Power Aktiengesellschaft - Germany

SIL in Power Stations – Status, Experiences and Further Developments

SIL in Kraftwerken – Status, Erfahrungen und weitere Entwicklungen

11th International TÜV Rheinland SymposiumFunctional Safety in Industrial ApplicationsMay 13 – 14, 2014, Cologne - Germany

SIL IN POWER STATIONSStatus, Experiences and further

Developments

Contact

Bernhard Hoffmann | RWE Power AG | Energiestr. 10, 41517 GrevenbroichT: +49 2181-26-3562 | [email protected]

VGB PowerTech e.V. | 14 February 2013 | SLIDE 3

• Introduction• Status of EN 50156 for furnaces and EN 764-7• Consequences for Europe due to the ammendment of pressure

equipment directive• Status of Technical Rules VDMA 4315 for turbomachinery and

generators• Status of VGB-S-008

AGENDA

SIL in power stations


STANDARDS FOR INSTALLATIONS IN EUORPEAN POWER STATIONS

EN12952

EN12953

EN 50156

EN13445

EN13480 EN ISO 12100

EN 61508SIL

EN ISO13849PL

EN62061

EN 61511

97/23/EC

2006/95/EC

2006/42/EC

Pressure Equipment Directive97/23/EC

Machinery Directive2006/42/EC

Management of functional Safety

Seveso-II-Directive96/82/EC

VDI/VDE 2180

Harmonised to:

VGB-S-008

Steam Boiler InstallationsPressure Vessel Installations

Turbo-Generating SetConveying Systems

Ammonia Systems

EN61511

+VDMA4315



REVISION OF EN 50156 FORFURNACES• Part 1 is in the Final Vote• Part 2 is in the Final Vote• Part 3 is in preparation



Protective Device2.10. annex I PED

Monitoring DevicesPoint 2.10. b) annex I PED

Safety Accessories2.1.3 paragraph 1 PED

Devices for direct pressure limitation

• Safety valves• Bursting disc safety devices• Controlled safety pressure relief

systems (CSPRS)

Limiting Devices

• Pressure switches• Temperature switches• Fluid level switches• Safety related measurement

control and regulation (SRMCR)

e.g.: EN ISO 4126-series e.g.: EN 12952-11EN 12953-9EN 50156-series

REVISION OF EN 50156 FORFURNACES



EN 12952Tube boiler

EN 12953Shell boiler

EN 50156-1Electrical equipment

for furnaces

EN 13445unfired pressure

Vessels

EN 13480Pipes

EN 764-7Safety systems for unfired

pressure equipmentt

76,8,9

EN 676Automatic forced

draught burners for gaseous fuels

EN 267Automatic forceddraught burnersfor liquid fuels

EN 61508

RL 97/23/EC

Harmonised to:EN 61511Functional Safety Safety instrumented systems forthe process industry sector

Not normative!

RL 2006/95/EC

RL 2006/42/EC

REVISION OF EN 50156 FORFURNACES AND EN 764-7



Safety related System(EN 50156-1)

Sensor Logic Actuator

Subsystem and Devices (EN 50156-2)

EN 161EN 267EN 298

EN 676EN 1643EN 1854

EN 12067-2EN 12952-11EN 12953-9

EN 13611prEN 16340ISO 23552-1

EN 60947-2EN 61800-5-2EN 61508

REVISION OF EN 50156 FORFURNACES (NEW PART 2)



AMMENDMENT OF PRESSURE EQUIPMENT DIRECTIVE (PART 1)

• The pressure equipment directive will be amended till middle of the year

• In the new pressure equipment the manufacturer will be new defined:• ‘manufacturer’ means any natural or legal person who

manufactures a pressure equipment or an assembly or has such an equipment or an assembly designed or manufactured, and markets that pressure equipment or assembly under his name or trademark or uses it for his own purposes; This is contradictory to recital (7). How should be the difference between assembley vs. installation identified according to guideline 3/2.



AMMENDMENT OF PRESSURE EQUIPMENT DIRECTIVE (PART 2)This means that for

• limiting devices, which either activate the means for correction or provide for shutdown or shutdown and lockout, such as pressure switches or temperature switches or fluid level switches and

• "safety related measurement control and regulation (SRMCR)" devices

a notified body accreditated in accordance to the pressure equipment directive has to be involved in the quality assessment even if it is installed for own purpose



AMMENDMENT OF PRESSURE EQUIPMENT DIRECTIVE (PART 3)• But even in this edition no specific requirements for limiting

devices of SRMCRs are added to the annex 1• As a consequence it was not possible to harmonise standards

based on IEC 61508 to the pressure equipment directive



concept and scope definition

hazard and risk analysis

safety requirements allocation

installation and commissioning

safety validation

operation and maintenance

decommissioning

designplaningoperation

and maintenace

planing

validationplaning

Installation and

comissioning planing

modifictionandretrofit

back to appropiate phase within saftey lifecycle

Stand SIL

SAFETY LIFECYCLE COVERED BY VDMA 4315VDMA 4315Turbo-SetCompressors



• VDMA 4315 Part 1 Basics (published)• VDMA 4315 Part 2 Retrofit and Modification (under preparation)• VDMA 4315 Part 5 Risk Assessment Steam Turbines (published)• VDMA 4315 Part 6 Risk Assessment Gasturbines (published)• VDMA 4315 Part 7 Risk Assessment Compressors (published)• VDMA 4315 Part 6 Generators (Final Vote)

STATUS VDMA 4315


concept and scope definition

hazard and risk analysis

safety requirements allocation

installation and commissioning

safety validation

operation and maintenance

decommissioning

designplaningoperation

and maintenace

planing

validationplaning

Installation and

comissioning planing

modifictionandretrofit

back to appropiate phase within saftey lifecycle


SAFETY LIFECYCLE COVERED BY VGB-S-008VGB-S-008SIL for Steam Boiler and Pressure Vessels



• In addition to VDMA 4315 the technical specification VGB-S-008 covers the steam boiler system and the pressure systems in the BOP of power stations

• In the actual version the first three steps of the safety lifecycle are covered

• All other steps of lifecycle will be defined for power stations in the running revision. (Planned Publishing in 2015)

STATUS VGB-S-008


Thank you foryour attention!


Documents

SIL in Power Stations