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BS EN 12953-9:2007

Current
Current

The latest, up-to-date edition.

Shell boilers Requirements for limiting devices of the boiler and accessories
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-31-2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for limiter
  4.1 General
  4.2 Materials and design
  4.3 Electrical equipment
  4.4 Fault assessment
  4.5 Marking
5 Special requirements for water level limiters
  5.1 Components
  5.2 Design
  5.3 Floating devices
  5.4 Level electrode devices
  5.5 Examination of functional capability
  5.6 Fault detection
6 Special requirements for pressure limiters
  6.1 Components
  6.2 Additional fault assessment requirements
  6.3 Design
  6.4 Electrical equipment
  6.5 Examination of functional capability
  6.6 Fault detection
7 Special requirements for temperature limiters
  7.1 Components
  7.2 Design
  7.3 Electrical equipment
  7.4 Examination of functional capability
8 Special requirements for flow limiters
  8.1 Components
  8.2 Design
  8.3 Electrical equipment
  8.4 Examination of functional capability
Annex A (informative) Limiting device
Annex B (informative) Example of an examination plan
Annex C (informative) Marking of limiters
Annex D (normative) Immunity against electrical and electromagnetic
        influences - Requirements and testing
      D.1 General
      D.2 Immunity against mains voltage variations
      D.3 Immunity against short-time voltage interruptions and
           reductions
      D.4 Immunity against mains frequency changes
      D.5 Immunity against electrostatic discharge (ESD)
      D.6 Immunity against fast transient disturbance variables
           (burst)
      D.7 Immunity against surges
      D.8 Immunity against high-frequency electromagnetic fields
      D.9 Immunity against conducted disturbances induced by
           high frequency fields
      D.10 Immunity against power frequency magnetic fields
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 97/23/EC
Bibliography

Describes requirements for limiters (or limiting devices) which are incorporated into safety systems for shell boilers as defined in EN 12953-1.

This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for shell boilers as defined in EN 12953-1.

A limiter (or limiting device) can be either:

  • a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3, and needs to include the safety logic and final actuator, or

  • one element of a safety system, for example, a self-monitoring water level sensor used as part of a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3. The overall boiler protection function needs to be provided in association with additional safety logic (where appropriate) and a final actuator.

The design requirements and examination of functional capability for the limiters are covered in this European Standard.

For an explanation of the extent of the limiter (or limiting device) see Figure A.1.

Committee
PVE/2
DocumentType
Standard
Pages
40
PublisherName
British Standards Institution
Status
Current

Standards Relationship
I.S. EN 12953-9:2007 Identical
UNI EN 12953-9 : 2007 Identical
NS EN 12953-9 : 1ED 2007 Identical
SN EN 12953-9 : 2007 Identical
NF EN 12953-9 : 2007 Identical
DIN EN 12953-9:2007-09 Identical
NEN EN 12953-9 : 2007 Identical
EN 12953-9:2007 Identical
NBN EN 12953-9 : 2007 Identical

02/710149 DC : 0 PD 2790 - SPECIFICATION FOR THE DESIGN AND MANUFACTURE OF SHELL BOILERS
EEMUA 193 : 2013 MANAGING COMPETENCE ASSURANCE FOR PERSONNEL UNDERTAKING IN-SERVICE INSPECTION OF PRESSURE EQUIPMENT

IEC 61000-4-8 : 2.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-8: TESTING AND MEASUREMENT TECHNIQUES - POWER FREQUENCY MAGNETIC FIELD IMMUNITY TEST
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EN 12953-6:2011 Shell Boilers - Part 6: Requirements for equipment for the boiler
EN 61000-4-11:2004/A1:2017 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-11: TESTING AND MEASUREMENT TECHNIQUES - VOLTAGE DIPS, SHORT INTERRUPTIONS AND VOLTAGE VARIATIONS IMMUNITY TESTS (IEC 61000-4-11:2004/A1:2017)
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1989/336/EEC : 1989 COUNCIL DIRECTIVE OF 3 MAY 1989 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO ELECTROMAGNETIC COMPATIBILITY
IEC 61000-4-8:2009 Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
IEC 61000-4-4:2012 RLV Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test
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1973/23/EEC : 1973 COUNCIL DIRECTIVE OF 19 FEBRUARY 1973 ON THE HARMONIZATION OF THE LAWS OF MEMBER STATES RELATING TO ELECTRICAL EQUIPMENT DESIGNED FOR USE WITHIN CERTAIN VOLTAGE LIMITS
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IEC 61558-2-17:1997 Safety of power transformers, power supply units and similar - Part2: Particular requirements for transformers for switch mode powersupplies
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IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
EN 61000-4-8:2010 Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
IEC 61000-4-2:2008 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
IEC 61000-4-3:2006+AMD1:2007+AMD2:2010 CSV Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
EN 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
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EN 61140:2016 Protection against electric shock - Common aspects for installation and equipment
EN 61558-2-6:2009 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
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1997/23/EC : 1997 DIRECTIVE 97/23/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 29 MAY 1997 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES CONCERNING PRESSURE EQUIPMENT
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