EN 267:1999/prA2

SLOVENSKI STANDARD
SIST EN 267:2000/oprA2:2006
01-november-2006
9HQWLODWRUVNLJRULOQLNL]DWHNRþDJRULYD'RSROQLOR$
Automatic forced draught burners for liquid fuels
Automatische Brenner mit Gebläse für flüssige Brennstoffe
Bruleurs automatiques a air soufflé pour combustibles liquide
Ta slovenski standard je istoveten z: EN 267:1999/prA2
SIST EN 267:2000/oprA2:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
DRAFT
EN 267:1999
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA2
August 2006
ICS

English Version
Automatic forced draught burners for liquid fuels
Brûleurs automatiques à air soufflé pour combustibles Automatische Brenner mit Gebläse für flüssige Brennstoffe
liquide
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 47.
This draft amendment A2, if approved, will modify the European Standard EN 267:1999. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status
as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
: This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
Warning
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 267:1999/prA2:2006: E
worldwide for CEN national Members.

---------------------- Page: 2 ----------------------

EN 267:1999/prA2:2006 (E)
Contents Page
Foreword .3
ANNEX K (normative)  Additional requirements for burners with pressurised parts and
burners with monitoring devices firing pressurised equipment as defined in
Pressure Equipment Directive (PED) 97/23/EC .4
K.1 Scope .4
K.3 Terms and definitions.4
K.5 test methods.8
K.5.9 Pressurised Parts .8
K.7.3 Other marking .9
K.7.4 Instructions for installation, adjustment, maintenance and operation .9
Annex L (normative) Materials for pressurised parts.10
Annex ZB (informative) Relationship between this European Standard and the essential
safety requirements of the Pressure Equipment (PED) Directive 97/23/EC.20

2

---------------------- Page: 3 ----------------------

EN 267:1999/prA2:2006 (E)
Foreword
This document (EN 267:1999/prA2:2006) has been prepared by Technical Committee CEN/TC 47
“Atomizing oil burners and their components - Function - Safety - Testing”, the secretariat of which is
held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZB which is an integral part of this
document.
3

---------------------- Page: 4 ----------------------

EN 267:1999/prA2:2006 (E)
ANNEX K
(normative)

Additional requirements for burners with pressurised parts and
burners with monitoring devices firing pressurised equipment as
defined in Pressure Equipment Directive (PED) 97/23/EC
prEN 267:2005 applies with the following supplements or modifications of the corresponding clauses.
K.1 Scope
according to clause 1 and addition:
For piping this amendment applies only for pressurised parts and accessories with a product of the
maximum allowable pressure PS and the diameter DN between 100 mm and 350 mm of less than
3 500 bar mm (category II) or with a product of PS and DN between 25 mm and 100 mm of less than
1 000 bar mm (category I), as defined by EU directive 97/23/EC.
Additional electrical functional requirements are given for monitoring devices.
The risk philosophy adopted in this standard is based on the analysis of hazards on account of
pressure. The standard applies to the principals to eliminate or reduce hazards and where they can
not be eliminated appropriate protection measures shall apply.
Any residual hazards are identified and communicated to the user where appropriate.
Depending on the installation situation additional requirements may apply to cover the risks arising
from traffic, wind, earthquake loading and external fire.
K.3 Terms and definitions
according to clause 3 and addition:
K.3.11
pressurised parts
piping components and devices having pressure bearing housings with a pressure greater than
500 mbar
NOTE See EU Directive 97/23/EC
K.3.12
monitoring devices
devices used for monitoring and controlling the burner when firing pressurised equipment
K.4.4.1 General Design
according to 4.4.1 and addition:
The design of the burner shall be based on the intended life time declared by the manufacturer. The
intended life time of the equipment shall be taken into account.
4

---------------------- Page: 5 ----------------------

EN 267:1999/prA2:2006 (E)
The pressure equipment shall be properly designed taking all relevant factors into account in order to
ensure that the equipment will be safe throughout its intended life.
The design shall incorporate appropriate safety coefficients using comprehensive methods which are
known to incorporate adequate safety margins against all relevant failure modes in a consistent
manner.
NOTE The life time of the components may differ from the life time of the burner.
K.4.4.4 Materials
according to 4.4.4 and addition:
If the pressurised parts carry aggressive media, the materials used shall be resistant to this media.
K.4.4.7 Pressurised parts
K.4.4.7.1 Design
Pressurised parts shall be designed for loadings appropriate to their intended use and other
reasonably foreseeable operating conditions.
Pressurised parts shall withstand a pressure strength test according to 4.5.5.4 and K.5.9.1.
K.4.4.7.2 Materials
Materials of pressurised parts, which are subject to a maximum allowable pressure > 0,5 bar, shall be
suitable for the intended lifetime unless replacement is foreseen. Such materials shall be verified
according to the following requirements:
Materials
 shall comply with harmonised standards (see Table L.1), or
 shall be covered by a European approval of pressure equipment materials (e.g. EN 13840), or
 shall be subject of a particular material appraisal.
Materials used in similar applications under similar operating conditions, which have been recognised
as being safe to use before 29 November 1999 may also be regarded as suitable. The safety of
pressurised parts using such materials shall be verified in combination with the design assessment
according to K.4.4.7.1
NOTE 1 For a list of materials used for the construction of pressure equipment and recognised as being safe
to use before 29 November 1999, see Table L.2 and Table L.3.
K.4.4.7.3 Permanent joints
Permanent joints and adjacent zones shall be free of any surface or internal defects detrimental to the
safety of the equipment.
The properties of permanent joints shall meet the minimum properties specified for the materials to be
joined unless other relevant property values are specifically taken into account in the design
calculations.
For pressure equipment, permanent joining of components which contribute to the pressure resistance
of equipment and components which are directly attached to them shall be carried out by suitably
qualified personnel according to suitable operating procedures.
5

---------------------- Page: 6 ----------------------

EN 267:1999/prA2:2006 (E)
K.4.5.4.1 General
according to 4.5.4.1 and addition
All fuel line components shall be assembled and mounted without bending, torque and other
mechanical stress.
All fuel line components used as pressurised parts shall comply with the PED or its mandated
standards.
All fuel line components shall be made of materials for appropriate lifetime. The manufacturer shall
declare periods of service and maintenance and declare appropriate lifetime or cycles to maintain
safety.
K.4.5.6.2 Air proving device
according to 4.5.6.2 and addition:
The burner shall be fitted with a device for proving adequate air flow during the pre-purge, ignition and
operation of the burner. If a pressure sensing device is used as being a monitoring device for fired
pressurized bodies the requirements of EN 1854 shall apply analogue.
K.4.5.8 Automatic burner control unit
The automatic burner control system as being a monitoring device for fired pressurized bodies shall
comply with the requirements of EN 230 and > 1200 kW burner output it shall have a permanent
operation mode.
K.4.6.1 General functions requirements
according to 4.6.1 and addition:
The following functions of the burner shall be designed according to EN 50156-1 as equivalence to
maintain safety integrity level 3 (SIL-class 3):
 pressure control;
 burner control and flame detection;
 safe shut off of the fuel supply;
 air/fuel ratio control;
 integration of the superior safety equipment of the boiler and of the firing system.
The requirements of the construction, see K.4.6.18 .
The requirements of the safety life cycle, see K.4.6.19.
K.4.6.11.1 Protection of the oil and air supply
according to 4.6.11.1 and addition:
A fuel pressure switch for low fuel pressure is required for permanent operation without supervision of
burners firing a pressure equipment according to category IV of the PED. It shall lead to a shut-off of
the burner, if the required atomizing pressure is not reached.
6

---------------------- Page: 7 ----------------------

EN 267:1999/prA2:2006 (E)
K.4.6.17 External safety limiter
The operation of an external safety limiter (e.g. safety accessory of the pressure vessel as water level
limiters, pressure sensing devices, etc.) as being a safety accessory shall cause at least a non volatile
lockout of the burner.
K.4.6.18 Design according to EN 50156-1
K.4.6.18.1 General
The equipment of the following paragraphs is considered to be an equivalence to the requirements of
SIL-Class 3 of the EN 50156-1.
Alternative equipment has to comply with EN 50156-1 and has to maintain SIL-Class 3, and to prove it.
NOTE 1 Fulfilling a specific SIL class implies fulfilling a fault assessment according to EN 50156-1:2005, 10.5
NOTE 2 Other SIL-classes may be applicable, if this is based on a risk assessment according to EN 50156-1.
K.4.6.18.2 Pressure control
The pressure control shall be designed according to K.4.5.6.2.
K.4.6.18.3 Safe shut off of the fuel supply
The safe shut off of the fuel supply shall be designed for the foreseen lifetime. The expected lifetime
shall be declared by the burner manufacturer.
K.4.6.18.4 Air/fuel ratio control
Mechanical air-/fuel ratio controls shall be operated by mechanical feed and shall be designed in such
a way that the ratio is not inadmissibley influenced by interference and operation effects.
For electronic air-/fuel ratio controls the requirements of ISO/DIS 23552-1 shall apply.
K.4.6.18.5 Integration of the superior safety equipment of the boiler and of the firing system
The signal processing of superior safety equipment of the boiler shall be designed according to
EN 50156-1:2005, Figure 10 or Figure 11, see K.4.6.17.
K.4.6.19 Consideration: Safety Life Cycle
In Figure K.1 the safety life cycle for the application and installation of a protective system of a burner
according to this standard is demonstrated.
7

---------------------- Page: 8 ----------------------

EN 267:1999/prA2:2006 (E)

Figure K.1 — Safety life cycle for the burner
K.5 test methods
according to clause 5 and addition :
K.5.9 Pressurised Parts
K.5.9.1 Component Design Pressure Strength Test
The pressure strength test shall be performed by using a safety factor f for the test pressure where f is
the multiplication factor for the maximum inlet pressure.
If not otherwise defined by harmonised design standards, a safety factor for the design f = 1,5 shall be
considered.
NOTE Experimental test factors dependent on the type of the device and on the material are given in
appropriate design standards for pressurised parts, e. g. see prEN 12516-3.
8

---------------------- Page: 9 ----------------------

EN 267:1999/prA2:2006 (E)
K.7.3 Other marking
according to 7.3 and addition
Marking and identification as pressure equipment will be necessary if the product of pressure and
volume leads to a category higher than category 1.
The burner and its monitoring devices shall be identified when they fire pressurised bodies according
to PED.
K.7.4 Instructions for installation, adjustment, maintenance and operation
according to 7.4 and addition :
The instruction shall include the following requirements:
All fuel line components shall be assembled and mounted without bending, torque and other
mechanical or thermal stress.
The intended life time of the burner shall be declared by the manufacturer as well as the appropriate
activities to ensure further safe operation. The manufacturer shall further give information about the
wear parts and adequate changing/lifetime periods in which they have to be exchanged to incorporate
adequate safety margins.
The installation instruction shall indicate how to connect external safety limiters to the burner control
system and shall declare if the burner will go to a safety shut down only or a non-volatile lock-out.
Information to the user shall be given on residual hazards to take the appropriate special measures at
the time of installation and/or use. The instructions shall also include all relevant information on
mounting and maintenance. If appropriate, these instructions shall also refer to hazards arising from
misuse.
9

---------------------- Page: 10 ----------------------

EN 267:1999/prA2:2006 (E)
Annex L
(normative) Materials for pressurised parts
Table L.1 — List of materials covered by harmonised standards
Materials Restrictions
Group Type Relevant standard Regulator / safety device
b b
Operating temperature PS
max [PS x DN ] DN
max max

a
-20 °C to 60 °C bar bar x mm mm
-10 °C to 60 °C
Pressure containing parts and inner metallic partition walls
Rolled and forged steel S235JR / 1.0037 with thickness ≤ 40 mm, S275JR 10028 x 100 - -
/ 1.0044 with thickness ≥ 1,5 mm, S355JR/ 1.0045
with thickness ≥ 1,5 mm
S235J2G3 / 1.0116 & S235J2G4 / 1.0117 both with x
nominal thickness ≤ 150 mm, S275J2G3 / 1.0144
& S275J2G4 / 1.0145 & S355J2G3 / 1.0570 all with
1,5 mm < nominal thickness ≤150 mm
S275JO / 1.0143 & S355JO / 1.0553 both with 1,5
mm < nominal thickness ≤ 250 mm and at –20 °C
KV 27 J av. of three and 20 J min
c
P235GH / 1.0345, P265GH / 1.0425, P295GH/ 10028-2 x
1.0481, P355GH / 1.0473 all with thickness ≤ 150
mm
c
P275NH / 1.0487, P355NH / 1.0565 with thickness 10028-3  x
≤ 150 mm, P355NL1 / 1.0566 with thickness ≤ 150
mm
c
All types 10028-4 , 10028- x
c
5
c
All grades from P355. to P 500… with thickness ≤ 10028-6  x

150 mm
c
All steel designation with A ≥ 16 %
10028-7  x

min
c
All steel designations with A ≥ 16 % and at –
10222-1
min

20 °C KV 27 J av. of three and 20 J min
c

All steel designations martensitic type 10222-5 x
All steel designations austenitic type  x
c
All steel designations with A ≥ 16 %, and at – 10272  x
min

20 °C KV 27 J av. of three and 20 J min
c
Cast Steel All steel designations EN 10213-3  x
10
EN

---------------------- Page: 11 ----------------------

EN 267:1999/prA2:2006 (E)
Table L.2 - List of materials not based on harmonised standards bur inherently meeting PED
Materials Restrictions
Group Type Relevant standard Regulator / safety device
b b
Operating temperature PS
max [PS x DN ] DN
max max

a
-20 °C to 60 °C bar bar x mm mm
-10 °C to 60 °C
Pressure containing parts and inner metallic partition walls
Rolled and forged steel 25 CrMo4 / 1.7218 & 25CrMoS4 / 1.7213 both with 10083-1 + A1 x 100 -
100 mm < d ≤ 160 mm or 60 mm < t ≤ 100 mm,
36CrNiMo4 / 1.6511 with A = 16 %. All types
min
shall be quenched and tempered (+QT) and with
cast analysis C≤0.25% or, when 0.25% < C ≤ 0.40,
Ni≥1%.
36CrNiMo4 / 1.6511 quenched and tempered x
(+QT)with A = 16 % and KV 27 J av. of three
min
and 20 J min. at –20 °C.
All steel designations quenched and tempered 10083-2 + A1 x
(+QT) with A ≥ 16 % and with cast analysis C ≤
min
0.25%.
d
11SMn30 / 1.0715, 11SMn37 / 1.0736, 10277-3 x 25
11SMnPb30 / 1.0718, 11SMnPb37 / 1.0737 all with
16 ≤ d ≤ 100 and A 16 %
min
As above and types 35S20 / 1.0726, 35SPb20 / x
1.0756, 36SMn14 / 1.0764, 36SMnPb14 / 1.0765,
38SMn28 / 1.0760, 38SMnPb28 / 10761, 44SMn28
/ 1.0762, 44SMnPb28 / 1.0763, 46SPb20 / 1.0757
with KV 27 J av. of three and 20 J min at –20 °C
All austenitic steel designations with longitudinal 10088-3 x -
A ≥ 16 % and other steel designations with
min
longitudinal A ≥ 16 % and KV 27 J av. of three
min
and 20 J min. at
–20 °C
DD11 / 1.0332, DD12 /1.0398, DD13 / 1.0335 10111 x
All steel designations used for skin-pass 10130 x
All low carbon content types 10214 x
11
EN

...