PREN 12952-11 : DRAFT 99
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - REQUIREMENTS FOR LIMITING DEVICES AND SAFETY CIRCUITS OF THE BOILER AND ACCESSORIES
01-07-2007
12-01-2013
Foreword
1 Scope
2 Normative references
3 Definitions
3.1 Limiter
3.2 Fail-Safe
3.3 Self-Monitoring
3.4 Redundancy
3.5 Diversity
4 Requirements for limiters
4.1 General
4.2 Materials and design
4.3 Electrical equipment
4.4 Fault assessment
5 Special requirements for water 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 requirements regarding 4.4 "Fault
assessment"
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
Annex A (informative) Limiting safety devices
Annex B (informative) EC-Type examination plan
Annex C (informative) Marking of limiters
Annex ZA (informative) Clauses of this European
Standard addressing essential or other
provisions of the Pressure Equipment
Directive
Provides requirements for limiting devices, and safety circuits of water-tube boilers as defined in EN 12952-1.
| Committee |
TC 269
|
| DocumentType |
Draft
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| 99/715322 DC : DRAFT NOV 99 | Identical |
| NEN EN 12952-11 : 2007 | Identical |
| NF EN 12952-11 : 2007 | Identical |
| PREN 50156-1 : DRAFT 2012 | ELECTRICAL EQUIPMENT FOR FURNACES AND ANCILLARY EQUIPMENT - PART 1: REQUIREMENTS FOR APPLICATION DESIGN AND INSTALLATION |
| IEC 61082-1:2014 RLV | Preparation of documents used in electrotechnology - Part 1: Rules |
| EN 60742:1995 | Isolating transformers and safety isolating transformers - Requirements |
| IEC 60770:1984 | Methods of evaluating the performance of transmitters for use in industrial-process control systems |
| IEC 60529:1989+AMD1:1999+AMD2:2013 CSV | Degrees of protection provided by enclosures (IP Code) |
| EN 60529:1991/AC:2016-12 | DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015) |
| IEC 60664-1:2007 | Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests |
| EN 60730-1:2016 | Automatic electrical controls - Part 1: General requirements |
| 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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