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EN 12952-12:2003

Current
Current

The latest, up-to-date edition.

Water-tube boilers and auxiliary installations - Part 12: Requirements for boiler feedwater and boiler water quality
Published date

03-09-2003

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Conditioning
5 Requirements
6 Test of the chemical composition
  6.1 General
  6.2 Sampling
  6.3 Sampling points
7 Analysis
  7.1 General
  7.2 Visual criteria
  7.3 Analysis methods
Bibliography

This Part of this European Standard applies to all water-tube boilers as defined in EN 12952-1 which are heated by combustion of one or more fuels or by hot gases for the generation of steam and/or hot water.This Part of this European Standard applies to those components between the feedwater inlet and the steam outlet of the steam generator. The quality of the steam produced is outside the scope of this standard.This Part of this European Standard aims to ensure that the boiler is able to be operated to minimize risk to personnel, the boiler and associated plant components located near it.NOTEThis European Standard does not aim to achieve optimum economic operation. For certain purposes, it will be more appropriate to optimize the chemical characteristics in order to:- increase the thermal efficiency;- increase the availability and reliability of the plant;- increase steam purity;- reduce the maintenance costs - repair, chemical cleaning, etc.This Part of this European Standard sets out minimum requirements for the specific types of water to reduce the risk of corrosion, sludge precipitation or formation of deposits which may lead to any damage or other operating problems.NOTEThis Part of this European Standard has been prepared on the assumption that the user of this European Standard possesses a sufficient knowledge of the construction and operation of the boiler as well as an adequate appreciation of water and steam chemistry.

Committee
CEN/TC 269
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

10/30202723 DC : DRAFT JUNE 2010 BS EN 12952-7 - WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 7: REQUIREMENTS FOR EQUIPMENT FOR THE BOILER
DIN EN 12952-7:2013-01 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 7: REQUIREMENTS FOR EQUIPMENT FOR THE BOILER
BS EN 12952-7:2002 Water-tube boilers and auxiliary installations Requirements for equipment for the boiler
I.S. EN 12952-7:2012 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 7: REQUIREMENTS FOR EQUIPMENT FOR THE BOILER
EN 12952-2:2011 Water-tube boilers and auxiliary installations - Part 2: Materials for pressure parts of boilers and accessories
EN 12952-3:2011 Water-tube boilers and auxiliary installations - Part 3: Design and calculation for pressure parts of the boiler
EN 12952-18:2012 Water-tube boilers and auxiliary installations - Part 18: Operating instructions
EN 12952-7:2012 Water-tube boilers and auxiliary installations - Part 7: Requirements for equipment for the boiler
UNI EN 12952-18 : 2013 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 18: OPERATING INSTRUCTIONS
PREN 12952-7 : DRAFT 2010 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 7: REQUIREMENTS FOR EQUIPMENT FOR THE BOILER
I.S. EN 12952-2:2011 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 2: MATERIALS FOR PRESSURE PARTS OF BOILERS AND ACCESSORIES
I.S. EN 12952-3:2011 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 3: DESIGN AND CALCULATION FOR PRESSURE PARTS OF THE BOILER
NF EN 12952-2 : 2011 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 2: MATERIALS FOR PRESSURE PARTS OF BOILERS AND ACCESSORIES
NF EN 12952-3 : 2012 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 3: DESIGN AND CALCULATION FOR PRESSURE PARTS OF THE BOILER
08/30184300 DC : DRAFT SEP 2008 BS EN 12952-2 - WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 2: MATERIALS FOR PRESSURE PARTS OF BOILERS AND ACCESSORIES
I.S. EN 12952-18:2012 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 18: OPERATING INSTRUCTIONS
UNE-EN 12952-7:2014 Water-tube boilers and auxiliary installations - Part 7: Requirements for equipment for the boiler
UNI EN 12952-7 : 2013 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 7: REQUIREMENTS FOR EQUIPMENT FOR THE BOILER
UNI EN 12952-2 : 2011 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 2: MATERIALS FOR PRESSURE PARTS OF BOILERS AND ACCESSORIES
UNI EN 12952-3 : 2012 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 3: DESIGN AND CALCULATION FOR PRESSURE PARTS OF THE BOILER
BS EN 12952-18:2012 Water-tube boilers and auxiliary installations Operating instructions
EEMUA 184 : 2009 GUIDE TO THE ISOLATION OF PRESSURE RELIEVING DEVICES
UNE-EN 12952-2:2012 Water-tube boilers and auxiliary installations - Part 2: Materials for pressure parts of boilers and accessories
UNE-EN 12952-3:2012 Water-tube boilers and auxiliary installations - Part 3: Design and calculation for pressure parts of the boiler
DIN EN 12952-18:2013-01 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 18: OPERATING INSTRUCTIONS
DIN EN 12952-3:2012-03 Water-tube boilers and auxiliary installations - Part 3: Design and calculation for pressure parts of the boiler
DIN EN 12952-2:2011-10 Water-tube boilers and auxiliary installations - Part 2: Materials for pressure parts of boilers and accessories
BS EN 12952-2:2011 Water-tube boilers and auxiliary installations Materials for pressure parts of boilers and accessories
BS EN 12952-3:2011 Water-tube boilers and auxiliary installations Design and calculation for pressure parts of the boiler

ISO 8467:1993 Water quality Determination of permanganate index
ISO 9964-2:1993 Water quality Determination of sodium and potassium Part 2: Determination of potassium by atomic absorption spectrometry
ISO 8245:1999 Water quality Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
ISO 6059:1984 Water quality — Determination of the sum of calcium and magnesium — EDTA titrimetric method
ISO 8288:1986 Water quality — Determination of cobalt, nickel, copper, zinc, cadmium and lead — Flame atomic absorption spectrometric methods
ISO 5814:2012 Water quality — Determination of dissolved oxygen — Electrochemical probe method
ISO 9963-1:1994 Water quality Determination of alkalinity Part 1: Determination of total and composite alkalinity
EN 12952-7:2012 Water-tube boilers and auxiliary installations - Part 7: Requirements for equipment for the boiler
EN 12952-1:2015 Water-tube boilers and auxiliary installations - Part 1: General
ISO 5667-3:2012 Water quality Sampling Part 3: Preservation and handling of water samples
ISO 6332:1988 Water quality — Determination of iron — Spectrometric method using 1,10-phenanthroline
ISO 5667-1:2006 Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques
ISO 7888:1985 Water quality — Determination of electrical conductivity
ISO 6878:2004 Water quality — Determination of phosphorus — Ammonium molybdate spectrometric method
ISO 10523:2008 Water quality — Determination of pH
ISO 9964-1:1993 Water quality Determination of sodium and potassium Part 1: Determination of sodium by atomic absorption spectrometry
EN ISO 9963-1 : 1995 WATER QUALITY - DETERMINATION OF ALKALINITY - PART 1: DETERMINATION OF TOTAL AND COMPOSITE ALKALINITY
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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