PREN 14459 : DRAFT 2013

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Units of measurement and test conditions
6 Construction requirements
7 Performance
8 Electrical requirements
9 Electromagnetic compatibility (EMC)
10 Marking, installation and operating instructions
Annex A (informative) - Void
Annex B (informative) - Leak-tightness test for gas
        controls - volumetric method
Annex C (informative) - Leak-tightness test for gas
        controls - pressure loss method
Annex D (normative) - Conversion of pressure loss into
        leakage rate
Annex E (normative) - Electrical/electronic component
        fault modes
Annex F (normative) - Additional requirements for safety
        accessories and pressure accessories as
        defined in EU Directive 97/23/EC
Annex G (normative) - Materials for pressurized parts
Annex H (normative) - Additional materials for pressurized parts
Annex I (normative) - Requirements for controls used in DC
        supplied burners and appliances burning gaseous or
        liquid fuels
Annex J (normative) - Method for the determination of a Safety
        integrity level (SIL)
Annex K (normative) - Method for the determination of a
        Performance Level (PL)
Annex L (informative) - Relationship between Safety Integrity
        Level (SIL) and Performance Level (PL)
Annex M (normative) - Reset functions
Annex N (informative) - Guidance document on Environmental
        Aspects
Annex O (normative) - Seals of elastomer, cork and synthetic
        fibre mixtures
Annex AA (informative) - Example of a risk assessment method
Annex BB (informative) - Example of a risk assessment with the method
         described in Annex AA
Annex CC (informative) - Realization of a protective measure
Annex DD (informative) - Hazards in gas and oil appliances
         handled by control functions
Annex EE (informative) - Classification of control functions
         based on the determination of basic risks
Bibliography

Describes methods for the classification and assessment of function blocks designed to operate burners and appliances burning gaseous or liquid fuels, with particular regards to their fault behaviour and preventative measures.