ISO 3008:2006

INTERNATIONAL ISO
STANDARD 3008
Second edition
2006-11-15
Fire resistance tests — Door and shutter
assemblies
Essais de résistance au feu — Assemblages porte et volet

Reference number
©
ISO 2006
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ii © ISO 2006 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 2
4 Test equipment . 4
5 Test conditions . 4
6 Test specimen . 4
6.1 Size of specimen. 4
6.2 Number of specimens . 4
6.3 Design of specimen. 4
6.4 Construction. 4
6.5 Verification . 5
7 Installation of test specimen . 5
7.1 General. 5
7.2 Supporting construction. 5
7.3 Test construction. 5
7.4 Gaps . 14
8 Conditioning. 18
8.1 Moisture content. 18
8.2 Mechanical. 18
9 Application of instrumentation. 19
9.1 Temperature measurements. 19
9.2 Maximum temperature. 34
9.3 Temperature of door frame. 35
9.4 Pressure measurements . 35
9.5 Heat flux measurement . 36
9.6 Deflection. 37
10 Test procedure . 41
10.1 Examination steps . 41
10.2 Completion of test . 42
11 Performance criteria. 42
11.1 Integrity. 42
11.2 Insulation . 43
12 Test report . 43
13 Field of direct application of test results . 43
13.1 General. 43
13.2 Timber constructions . 44
13.3 Steel constructions. 44
13.4 Glazed constructions . 44
13.5 Fixings/hardware . 44
Annex A (normative) Conditioning requirements for supporting constructions . 45
Annex B (informative) Estimation of radiant heat flux using measured surface temperature and
Stefan-Boltzmann law. 46
Bibliography . 48

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 3008 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire
containment.
This second edition cancels and replaces the first edition (ISO 3008:1976), the following clause and
subclauses of which have been technically revised as described below.
a) The addition of some specific types of door and shutter assemblies such as elevator/lift landing doors in
Clause 1.
b) Specific guidance on the types of associated and supporting construction to test and their associated field
of application in 7.3.1.2 and 7.3.1.3.
c) The addition of the plate thermometer for furnace temperature control in 9.1.1.
d) Greater detail on unexposed face temperature, pressure, and heat flux measurements in 9.1.2, 9.2, 9.3,
9.4 and 9.5.
iv © ISO 2006 – All rights reserved

Introduction
This International Standard contains specific requirements for fire resistance testing which are unique to the
elements of building construction described as doors and shutters. The requirements for these doors and
shutters are intended to be applied in appropriate conjunction with the detailed and general requirements
contained in International Standard ISO 834-1.
INTERNATIONAL STANDARD ISO 3008:2006(E)

Fire resistance tests — Door and shutter assemblies
WARNING — The attention of all persons concerned with managing and carrying out this fire
resistance test is drawn to the fact that fire testing may be hazardous and that there is a possibility
that toxic and/or harmful smoke and gases may be emitted during the test. Mechanical and
operational hazards may also arise during the construction of the test elements or structures, their
testing and disposal of test residues.
An assessment of all potential hazards and risks to health shall be made and safety precautions shall
be identified and provided. Written safety instructions shall be issued. Appropriate training shall be
given to relevant personnel. Laboratory personnel shall ensure that they follow written safety
instructions at all times.
1 Scope
This International Standard specifies a method for determining the fire resistance of door and shutter
assemblies designed primarily for installation within openings incorporated in vertical separating elements,
such as:
⎯ hinged and pivoted doors;
⎯ horizontally-sliding and vertically-sliding doors including articulated sliding doors and sectional doors;
⎯ steel single skin folding shutters (uninsulated);
⎯ other sliding folding doors;
⎯ tilting doors;
⎯ lift landing/elevator doors;
⎯ rolling shutter doors;
⎯ removable panels in walls.
This International Standard is used in conjunction with ISO 834-1. No requirements are included for
mechanical conditioning, e.g. “shakedown” or durability, as these are included in the relevant product standard.
This method may also be used to determine the fire resistance of non-loadbearing horizontal doors by analogy.
However, these are not specifically addressed here and the field of direct application given in Clause 13 is not
valid for horizontally-oriented doors.
For smoke leakage testing of doors and shutters refer to ISO 5925-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 834-1:1999, Fire-resistance tests — Elements of building construction — Part 1: General requirements
ISO 834-8:2002, Fire-resistance tests — Elements of building construction — Part 8: Specific requirements for
non-loadbearing vertical separating elements
ISO 3009:2003, Fire-resistance tests — Elements of building construction — Glazed elements
ISO 5925-1, Fire tests — Smoke control door and shutter assemblies — Part 1: Ambient and medium
temperature leakage test procedure
ISO 13943:2000, Fire safety — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 834-1, ISO 13943 and the following
apply.
3.1
associated supporting construction
specific construction in which the door or shutter assembly is to be installed as intended for use in practice
and which is used to close off the furnace and provide the levels of restraint and thermal heat transfer to be
experienced in normal use
3.2
cill
member, which spans between two frame jambs at the base which may or may not be set into the floor and
which remains visible
3.3
door assembly
door set
assembly, complete with grilles and louvers together with the door hardware and any fire seals, smoke seals,
draught seals, acoustic seals and consisting of pivoted, hinged or sliding door leaves or leaf, including any
frame, which is provided for closing of permanent openings in separating elements
NOTE This includes all side-panels, vision panels or transom panels.
3.4
door hardware
items such as hinges, handles, locks, panic bars, escutcheons, letter plates, kick plates, sliding gear, closing
devices, electrical components, wiring, etc. which are, or can be used in the door or shutter assembly
3.5
double action
action of a fire door leaf that opens in both directions
3.6
fire seal
seal fitted to the frame or to the leaf edge for the purpose of extending the period of integrity of the assembly
2 © ISO 2006 – All rights reserved

3.7
floor
upper surface of the horizontal element on which the door or shutter assembly is mounted and which extends
from the exposed face to the unexposed face of the assembly
3.8
flush over panel
fixed panel fitted within the head and jambs above the door leaf without a transom fitted
3.9
gap
clearance between two nominally adjacent surfaces and/or edges, e.g. between the edge of a leaf and the
frame or face of the leaf and the frame stop
3.10
primary leaf
leaf of a multi-leaved door assembly which is the largest and/or has the handle attached to it as the preferred
leaf for general operation
NOTE If the leaves of a multi-leaved door are the same size and if the handles (or other hardware such as push
plates) are fitted to all leaves, then no primary leaf exists for that door assembly.
3.11
shutter assembly
complete assembly consisting of rolling, folded or sliding curtains including guides, rollers, tracks, and
operating mechanism and housings
3.12
side panel
fixed panel which is incorporated to one side of a door which is part of the test specimen
3.13
single action
action of a fire door leaf that opens in only one direction
3.14
smoke seal
seal fitted to the frame or to the leaf edge for the purpose of restricting the flow of smoke or hot gases
3.15
standard supporting construction
form of construction used to close off the furnace and to support the door or shutter assembly being evaluated,
and which has a quantifiable influence on both the thermal heat transfer between the construction and the test
specimen, and provides known resistance to thermal distortion
3.16
test specimen
door or shutter assembly that is to be installed in a standard or associated supporting construction to allow it
to be evaluated
3.17
through connection
fixing or internal spacer that either penetrates through the door or shutter construction from one face to
another or directly connects the faces one to the other
3.18
transom
member that extends across the frame from jamb to jamb at the head of the leaf and which creates an
aperture to house a transom panel
3.19
transom panel
fixed panel that is incorporated above a door and is bounded on all edges by either the frame head, the jambs
or the transom
4 Test equipment
4.1 The test equipment shall be as specified in ISO 834-1. The furnace used shall be related to the
orientation of the test specimen. For vertical specimens the wall testing furnace is suitable, for horizontal
specimens, the floor furnace is applicable.
4.2 Measurement of heat flux from the unexposed surface of specimens shall be made as described in 9.5.
5 Test conditions
Test conditions require the application of the heating and pressure conditions of the standard test as defined
in ISO 834-1.
6 Test specimen
6.1 Size of specimen
The test specimen and all its components shall be full size. When this is restricted by the size of the opening
of the furnace (which is normally 3 m × 3 m), the door or shutter assembly shall be tested at the maximum
size possible and the fire resistance of the full-sized assembly shall be derived by an extended application
analysis. However, the minimum dimensions of supporting construction shall be not less than that prescribed
in 7.3.1.1.
6.2 Number of specimens
The number of test specimens shall be selected as described in ISO 834-1. It shall be stated in the test report
if testing is carried out from one side only, whether due to the symmetrical nature of the door or because it is
required to resist fire from one side only.
6.3 Design of specimen
6.3.1 The design of the test specimen and the choice of supporting construction shall take into account the
requirements of 7.3 if the widest field of direct application is to be achieved.
6.3.2 Where the door or shutter assembly incorporates side, transom or flush over panels, whether glazed
or unglazed, these shall be tested as part of the door or shutter assembly. The side panel shall always be on
the latch side.
6.3.3 The test specimen shall be fully representative of the door or shutter assembly as intended for use in
practice, including any appropriate surface finishes and fittings which are an essential part of the specimen
and may influence its behaviour in a test construction.
6.4 Construction
The test specimen shall be constructed as described in ISO 834-1.
4 © ISO 2006 – All rights reserved

6.5 Verification
6.5.1 The sponsor shall provide a specification sufficiently detailed to allow the laboratory to conduct a
detailed examination of the specimen before the test and to agree on the accuracy of the information supplied.
ISO 834-1 provides detailed guidance on verification of the test specimen.
6.5.2 When the method of construction precludes a detailed survey of the specimen without having to
permanently damage it, or if it is considered that it will subsequently be impossible to evaluate construction
details from a post-test examination, then one of two options shall be exercised by the laboratory, either:
⎯ the laboratory shall oversee the manufacture of the door or shutter assembly(ies) that is (are) to be the
subject of the test or
⎯ the sponsor shall, at the discretion of the laboratory, be requested to supply an additional assembly or
that part of the assembly which cannot be verified (e.g. a door leaf) in addition to the number required for
the testing; the laboratory shall then choose freely which of these shall be subjected to the testing and
which shall be used to verify the construction.
7 Installation of test specimen
7.1 General
7.1.1 The test specimen shall be installed in a manner as intended for use in practice, incorporating all
hardware and other items that may influence the performance of the specimen.
7.1.2 The test specimen shall be mounted in a supporting construction, the field of application of which
covers the type (see 7.3.1.1) in which it is intended to be used. The design of the connection between the test
specimen and the supporting construction, including any fixings and materials used to make the connection,
shall be as intended for use in practice and shall be regarded as part of the test specimen.
7.1.3 The whole area of the test specimen, together with at least the minimum dimensions of the supporting
construction required by 7.3.1.1 shall be exposed to the heating conditions.
7.2 Supporting construction
The fire resistance of any supporting construction shall not be determined from a test in conjunction with a test
specimen and shall be at least commensurate with that anticipated for the test specimen.
7.3 Test construction
7.3.1 General
7.3.1.1 Associated and supporting construction
The space between the specimen and the frame shall be filled with either:
⎯ associated construction or
⎯ supporting construction.
There shall be a minimum zone of supporting construction, 200 mm wide, exposed within the furnace, each
side and over the top of the aperture into which the test specimen is to be fixed. The thickness of the
supporting construction may be increased outside of the 200 mm zone. The test construction may incorporate
more than one test specimen providing that there is minimum separation of 200 mm between each specimen
and between the specimens and the edge of the furnace.
7.3.1.2 Associated construction
When the test specimen is always installed in a specific, normally proprietary, form of construction that is
permanently associated with its intended use in practice, then the specimen shall be installed in a sample of
this associated construction.
7.3.1.3 Supporting construction
7.3.1.3.1 Where the test specimen is not permanently associated with a specific form of construction, the
area between the test specimen and the support frame shall be filled with a rigid or flexible standard
supporting construction as specified in ISO 834-8.
7.3.1.3.2 The choice of standard supporting construction shall reflect the range of intended use for the door
or shutter assembly. The rules governing the applicability of the chosen standard supporting construction to
other end use situations are given in Clause 13.
7.3.1.3.3 Figures 1 to 8 illustrate the use of supporting constructions in conjunction with the mounting of
specimens of different types.
Key
1 steel vertical ‘C’ stud
2 12,5 mm plasterboard
3 screws at 300 mm fixing centres
Figure 1 — Example of a horizontal cross section of a flexible standard supporting construction
6 © ISO 2006 – All rights reserved

Key
1 standard supporting construction (block wall)
2 door assembly (test specimen)
3 test frame
NOTE 1 + 2 form the test construction.
Figure 2 — Example of door assembly in a rigid standard supporting construction
Key
1 standard or associated supporting construction
2 door assembly (test specimen)
3 test frame
4 free edge insulation
NOTE 1 + 2 form the test construction.
Figure 3 — Example of a door assembly in flexible standard or associated supporting construction
8 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 floor
2 standard supporting construction
3 associated supporting construction
4 free edge insulation
Figure 4 — Example of horizontal sections for mounting hinged door specimens
Dimensions in millimetres
Key
1 rigid non-combustible material
2 cill
Figure 5 — Examples for mounting hinged door specimens (vertical sections)
10 © ISO 2006 – All rights reserved

Dimensions in millimetres
a)  Vertical section
b)  Horizontal section
Key
1 supporting construction
2 floor, rigid non-combustible material
3 top of furnace
4 floor of furnace
5 side of furnace
Figure 6 — Example of details for mounting sliding door specimens
Dimensions in millimetres
a)  Vertical section
b)  Horizontal section
Key
1 supporting construction
2 floor, rigid non-combustible material
3 top of funrace
Figure 7 — Example of details for mounting folding door specimens
12 © ISO 2006 – All rights reserved

Dimensions in millimetres
a)  Vertical section
b)  Horizontal section
Key
1 supporting construction
2 floor, rigid non-combustible material
Figure 8 — Example of details for mounting rolling shutter specimens
7.3.1.4 Restraint on supporting construction
7.3.1.4.1 For flexible standard supporting constructions and all associated supporting constructions, the
partition or wall shall be erected so that it can distort freely perpendicular to the plane of the construction along
the vertical edges, i.e. there shall be a free edge at each end of the construction.
7.3.1.4.2 For rigid standard supporting constructions, the wall shall be erected with no freedom to distort
perpendicular to the plane of the wall along the vertical edges, i.e. it shall be fixed to the inside of the test
frame as in normal practice.
7.3.1.4.3 If the bottom of the test specimen is at floor level in practice, at the bottom of the aperture,
continuity of the floor shall be simulated using a solid, non-combustible rigid material which has a minimum
width of 200 mm on each side of the assembly, i.e. from the exposed to the unexposed face. The furnace floor
can be regarded as part of the simulation of the floor continuity provided that it is level with the base of the
assembly. If a cill detail is incorporated as part of the door or shutter assembly, this shall be incorporated
within or placed on top of the extension. If the test specimen is not to be used at floor level, and provided that
it has a frame detail to all four sides of the aperture, then it may be mounted simply within the thickness of the
wall, without the extension.
NOTE If the specimen is tested in conjunction with a non-combustible floor, then this may not represent the situation
when the specimen is installed above a combustible flooring such as timber or carpet.
7.4 Gaps
7.4.1 The adjustment of the door leaf, leaves or shutter and gaps shall be within the tolerances of the
design values stipulated by the sponsor. These shall be representative of those used as intended for use in
practice so that appropriate clearances exist, e.g. between the fixed and moveable components.
7.4.2 In order to generate the widest field of direct application, the gaps shall be set between the middle
value and the maximum value within the range of gaps given by the sponsor.
A door or shutter assembly with a specified range of gaps from 3 mm to 8 mm is tested with gaps set between
5,5 mm and 8 mm. Examples of gap measurement are given in Figures 9 to 12.
14 © ISO 2006 – All rights reserved

Figure 9 — Examples of clearance gap measurements for hinged and pivoted doors (vertical sections)
a)  Single doors
b)  Meeting edge for double doors
Figure 10 — Examples of gap measurements for hinged and pivoted doors
16 © ISO 2006 – All rights reserved

a)  Sliding doors
b)  Roller shutters
c)  Sliding, folding doors
Key
1 junction between two leaves
Figure 11 — Examples of gap measurements (horizontal sections)
a)  Sliding doors b)  Roller shutters c)  Sliding, folding doors
Figure 12 — Examples of gap measurements (vertical sections)
8 Conditioning
8.1 Moisture content
The test specimen shall be conditioned in accordance with ISO 834-1. Requirements for conditioning of
supporting constructions are given in Annex A.
8.2 Mechanical
Some product standards exist for certification purposes, which require mechanical testing before the start of
the fire test. Durability requirements are given in the relevant product standard.
18 © ISO 2006 – All rights reserved

9 Application of instrumentation
9.1 Temperature measurements
9.1.1 Furnace temperature measuring instrument
Plate thermometers shall be provided in accordance with ISO 834-1. They shall be evenly distributed over a
vertical plane 100 mm from the nearest plane of the test construction (see Figure 13). There shall be at least
one plate thermometer for every 1,5 m of the exposed surface area of the test construction, subject to a
minimum of four. The plate thermometer shall be oriented so that “side A” faces the back wall of the furnace.
Dimensions in millimetres
Key
1 plane of furnace
2 nearest plane of test construction
3 test frame
Figure 13 — Example of positions of furnace temperature measuring devices (plate thermometer)
(horizontal sections)
9.1.2 Unexposed face thermocouples
9.1.2.1 Where no evaluation against the insulation criteria is required of the door or shutter assembly, or
any part thereof, no temperature measurements are required.
9.1.2.2 Where compliance with the insulation criteria is required to be evaluated, thermocouples of the
type specified in ISO 834-1 shall be attached to the unexposed face for the purpose of obtaining the average
and maximum surface temperatures. Examples of the location of unexposed face thermocouples are shown in
Figures 14 to 27.
Dimensions in millimetres
Key
1 thermocouple for maximum temperature rise
2 thermocouple for average temperature rise
3 test frame
4 door leaf
Figure 14 — Example of locations of unexposed face thermocouples, general arrangement
(single leaf door 1 200 mm)
20 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
3 primary door leaf
4 secondary door leaf
5 frame
Figure 15 — Example of locations of unexposed face thermocouples, general arrangement
(double leaf door assembly) (primary leaf 1 200 mm wide, secondary leaf < 1 200 mm)

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 clear opening
NOTE Although thermocouples are shown on both sides of the door face in this illustration in order to show proximity
to the frame, they are to be placed only on the non-fire exposed face.
Figure 16 — Example of locations of unexposed face thermocouples at periphery of
hinged and pivoted doors (detailed)
22 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
NOTE Although thermocouples are shown on both sides of the door face in this illustration in order to show proximity
to the frame, they are to be placed only on the non-fire exposed face.
Figure 17 — Example of location of unexposed face thermocouples on meeting edges
(hinged or pivoted double leaf doors)
Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
3 clear opening
4 door track
Figure 18 — Example of locations of unexposed face thermocouples (single leaf sliding door)
24 © ISO 2006 – All rights reserved

Dimensions in millimetres
a)  Section view
b)  Plan view
c)  Plan view
Key
1 thermocouples for maximum temperature rise
NOTE Although thermocouples are shown on both sides of the door face in this illustration to show proximity to the
frame, they are placed only on the non-fire exposed face.
Figure 19 — Example of locations of unexposed face thermocouples (single leaf sliding door)
Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise 3 clear opening
2 thermocouples for average temperature rise 4 shutter curtain
NOTE Although thermocouples are shown on both sides of the door face in this illustration to show proximity to the
frame, they are placed only on the non-fire exposed face.
Figure 20 — Example of locations of unexposed face thermocouples, general arrangement
(roller shutter)
26 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
NOTE Thermocouples 1, 3, 4 and 6 are always required. Thermocouples 2 and 5 are not required if the leaf width is
less than 1 200 mm.
Figure 21 — Reduction in number of unexposed face thermocouples with decreasing leaf width
Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
W width of panel
H height of panel
Figure 22 — Examples of locations of thermocouples in discrete areas, e.g. side panels, over panels
and transom panels
(assuming that there is only one of each type in the specimen)
28 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
Figure 23 — Example of locations of thermocouples on unexposed face; example of double leaf door
with hinged flush over panel (largest leaf width < 1 200 mm)
Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
Figure 24 — Example of locations of thermocouples on unexposed face; example for double leaf door
with transom panel (largest leaf width < 1 200 mm)
30 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 transom frame width for application of thermocouples
3 transom panel
4 door leaf
NOTE Although thermocouples are shown on both sides of the door face in this illustration to show proximity to the
frame, they are placed only on the non-fire exposed face.
Figure 25 — Example of locations of thermocouples on unexposed face; example for double leaf door
with transom panel (largest leaf width < 1 200 mm)
(See 9.3 for additional guidance on single doors)
Dimensions in millimetres
Key
1 thermocouples for maximum temperature rise
2 thermocouples for average temperature rise
NOTE 1 Average temperature of glazed area = average of thermocouples 6 and 7
NOTE 2 Maximum temperature of glazed area = maximum of thermocouples 6 – 10
NOTE 3 Average temperature of door leaf = average of thermocouples 1 – 5
NOTE 4 Maximum temperature of door leaf = maximum of thermocouples 1 – 5 and 11 – 20
Figure 26 — Example of locations of unexposed surface thermocouples on hinged door incorporating
glazing (width of door leaf > 1 200 mm)
32 © ISO 2006 – All rights reserved

Dimensions in millimetres
Key
1 thermocouple for maximum temperature rise 2 thermocouple for average temperature rise
NOTE 1 Average temperature of door leaf = average of thermocouples 1 – 5.
NOTE 2 Maximum temperature of door leaf = maximum of thermocouples 1 – 5 and 9 – 12.
NOTE 3 Average temperature of side/over panels = average of thermocouples 6 – 8.
NOTE 4 Maximum temperature of side/over panels = maximum of thermocouples 6 – 8 and 13 – 22.
Figure 27 — Example of locations of unexposed surface thermocouples on door assemblies with
multiple side/transom panels
9.1.2.3 The temperature of the supporting construction in which the door or shutter assembly is mounted
is not required to be measured and therefore, no thermocouples are required.
9.1.2.4 No thermocouple shall be placed within 50 mm of any hardware.
9.1.2.5 Position five thermocouples (for single or double leaf doors), one at the centre of each leaf and
one at the centre of each quarter section. These shall not be located closer than 50 mm to any joint, stiffener
or through component, nor closer than 100 mm to the edge of the leaf.
9.1.2.6 For door or shutter assemblies which incorporate discrete areas of different thermal insulation
W 0,1 m (e.g. flush over panels, transom panels, side panels or glazed panels within a door leaf) extra
thermocouples shall be evenly distributed over the sum of the surface of those areas in order to determine the
average temperature at a density of one thermocouple per square metre or part thereof, subject to a minimum
of two. The average insulation performance of the sum of each area shall be determined.
9.1.2.7 When the total area of a single portion of the door or shutter assembly represents less than
0,1 m , it shall be disregarded for the purpose of ascertaining the average unexposed face temperature.
9.2 Maximum temperature
9.2.1 The maximum temperature shall be determined from the five thermocouples fixed to determine the
average temperature rise (as given in 9.1.2.5), the roving thermocouple and from additional thermocouples
fixed as indicated in 9.2.2 and 9.2.3.
9.2.2 If the door or shutter assembly incorporates discrete areas of different thermal insulation W 0,1 m
(e.g. flush-over panels, transom panels, side panels, or glazed panels within a door or shutter area) which are
evaluated separately with respect to average temperature rise, then the evaluation of maximum unexposed
face temperature of those areas shall also be undertaken separately. This may require extra unexposed
surface thermocouples to be applied as given in 9.1.2.6.
9.2.3 For the temperature of door leaf or shutter, thermocouples shall be fixed to the face of each leaf or
shutter as follows:
a) at mid-height, 100 mm in from the vertical edges as specified below,
b) at mid-width, 100 mm down from the horizontal edge as specified below,
c) 100 mm in from the vertical edges and 100 mm down from the horizontal edge as follows:
1) the inside edges of the clear opening for:
i) hinged or pivoted doors opening toward the furnace;
ii) shutters or sliding doors installed on the exposed side of the supporting construction
or
2) the visible part of the edge of the door leaf for:
i) hinged or pivoted doors opening away from the furnace;
ii) shutters or sliding doors installed on the unexposed side of the supporting construction.
NOTE 1 If due to the narrow width of the leaf (leaves) or shutter(s) the thermocouples specified in 2) and 3) are closer
than 500 mm to each other, then those specified in 2) are omitted.
NOTE 2 If the leaf is < 200 mm wide (e.g. as in a multi-leaf folding shutter) then the leaves will be treated as if they
were one leaf with respect to application of unexposed face thermocouples for evaluating maximum temperature rise.
34 © ISO 2006 – All rights reserved

Examples of the reduction in the requirement for unexposed face thermocouples with width are given in
Figure 21.
Additional thermocouples shall be fixed to other areas of the leaf or shutter, e.g. over any through connection
or position where the temperature might be expected to be higher than the mean for the surface, subject to
the limitations given in 9.2.4, 9.2.5 and 9.2.6.
See Figures 14 to 21 and 23 to 27.
9.2.4 For the temperature of other areas, thermocouples for determination of the maximum temperature rise
of side, transom and flush-over panels, and discrete panels of different thermal insulation within the door leaf
shall be applied as for door leaves. However, if there is more than one other area of the same type then they
shall be treated as one large area (as are those for the average temperature rise). In such cases
thermocouples shall avoid any framework adjacent to the frame leaf (see Figures 26 and 27).
9.2.5 In addition, thermocouples shall be placed on flush-over panels and transom panels above door
leaves (but not discrete panels within the leaf) as follows:
a) at mid-width, 100 mm up from the horizontal edge;
b) 100 mm in from the vertical edges and 100 mm up from the horizontal edges.
See Figures 23 and 24 for examples of the above. See Figure 22 for exclusion of the thermocouples on
panels on the basis of size and distance between thermocouples.
9.2.6 The rules for reducing the number of thermocouples on door leaves of decreasing width shall also
apply in transom panels, side panels and flush-over panels.
9.3 Temperature of door frame
Thermocouples shall be fixed at each of the following positions:
a) one at mid-height on each vertical member;
b) one on the horizontal top member of the frame (and any transom > 30 mm wide, if fitted) at mid-width
(100 mm away from the door joint of a multi-leaf door on the primary leaf side);
c) one on the horizontal top member of the frame (and any transom > 30 mm wide, if fitted) 50 mm in from
each corner of the leaf opening.
At each of the positions, thermocouples shall be fixed as close as possible, i.e. with the centre of the disc
15 mm from the junc
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