ISO 6182-1:2014

INTERNATIONAL ISO
STANDARD 6182-1
Third edition
2014-01-15
Fire protection — Automatic sprinkler
systems —
Part 1:
Requirements and test methods for
sprinklers
Protection contre l’incendie — Systèmes d’extinction automatiques du
type sprinkler —
Partie 1: Prescriptions et méthodes d’essai des sprinklers
Reference number
©
ISO 2014
© ISO 2014
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ii © ISO 2014 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General . 1
3.2 Types of sprinkler according to type of heat-responsive element . 2
3.3 Types of sprinkler according to type of water distribution . 2
3.4 Types of sprinkler according to position . 3
3.5 Special types of sprinkler . . 3
3.6 Types of sprinkler according to sprinkler sensitivity . 5
4 Product consistency . 5
4.1 Quality control program . 5
4.2 Leak resistance testing . 6
4.3 Glass bulb integrity test . 6
5 Product assembly. 6
5.1 General . 6
5.2 Dynamic O-ring seals . 6
5.3 Rated pressure . 6
5.4 Dry sprinklers . 6
6 Requirements . 6
6.1 Dimensions . 6
6.2 Temperature ratings and colour coding . 7
6.3 Operating temperature (see 7.4) . 7
6.4 Water flow and distribution . 8
6.5 Function (see 7.7) . 9
6.6 Service load and strength of sprinkler body (see 7.8) . 9
6.7 Strength of heat-responsive element (see 7.9) . 9
6.8 Leak resistance and hydrostatic strength (see 7.10) .10
6.9 Heat exposure (see 7.11) .10
6.10 Thermal shock for glass bulb sprinklers (see 7.12) .11
6.11 Corrosion (see 7.13) .11
6.12 Coated sprinklers (see 7.14) .12
6.13 Water hammer (see 7.15) .13
6.14 Dynamic heating (see 7.16) .13
6.15 Resistance to heat (see 7.17) .13
6.16 Vibration (see 7.18) .13
6.17 Impact (see 7.19) .13
6.18 Rough usage (see 7.20) .13
6.19 Crib fire performance (see 7.21) .14
6.20 Lateral discharge (see 7.22) .14
6.21 Thirty-day leakage resistance (see 7.23) .14
6.22 Vacuum resistance (see 7.24).14
6.23 Water shield angle of protection (see 7.25) .14
6.24 Water shield rotation (see 7.26) .15
6.25 Thermal response of concealed and recessed sprinklers (see 7.27) .15
6.26 Freezing test (see 7.28) .16
6.27 Dry-type sprinkler deposit loading (see 7.29) .16
6.28 Dry sprinkler air tightness (see 7.30) .16
6.29 Protective covers (see 7.31) .16
6.30 Dezincification of brass parts (see 7.32) .17
6.31 Stress corrosion — magnesium chloride (see 7.33) .17
7 Test methods .17
7.1 General .17
7.2 Preliminary examination . .17
7.3 Visual examination .17
7.4 Operating temperature test (see 6.3) .18
7.5 Water flow constant (see 6.4.1) .20
7.6 Water distribution tests (see 6.4.2) .20
7.7 Functional test (see 6.5).29
7.8 Service load and strength of sprinkler body test (see 6.6) .32
7.9 Strength of heat-responsive element test (see 6.7).34
7.10 Leak resistance and hydrostatic strength tests (see 6.8) .34
7.11 Heat exposure test (see 6.9) .35
7.12 Thermal shock test for glass bulb sprinklers (see 6.10) .36
7.13 Corrosion tests (see 6.11) .36
7.14 Tests for sprinkler coatings .39
7.15 Water hammer test (see 6.13) .39
7.16 Dynamic heating test (see 6.14) .39
7.17 Heat resistance test (see 6.15) .41
7.18 Vibration test (see 6.16) .41
7.19 Impact test (see 6.17) .41
7.20 Rough usage test (see 6.18) .43
7.21 Crib fire test (see 6.19) .43
7.22 Lateral discharge test (see 6.20) .46
7.23 Thirty-day leakage test (see 6.21) .47
7.24 Vacuum test (see 6.22) .47
7.25 Water shield angle of protection (see 6.23) .48
7.26 Water shield rotation test (see 6.24) .48
7.27 Thermal response of concealed and recessed sprinklers test (see 6.25).48
7.28 Freezing test (see 6.26) .54
7.29 Dry-type sprinkler deposit loading test (see 6.27) .54
7.30 Dry sprinkler air tightness test (see 6.28) .54
7.31 Protective cover impact test for glass bulb sprinklers (see 6.29) .55
7.32 Dezincification of brass parts test (see 6.30) .56
7.33 Stress corrosion — magnesium chloride test (see 6.31) .57
8 Marking .58
8.1 Sprinklers .58
8.2 Sprinkler housings and concealed-sprinkler cover plates .59
8.3 Protective covers .60
9 Manufacturer’s installation instructions .60
Annex A (informative) Analysis of the strength test for release elements .61
Annex B (informative) Statistical tolerance limits .62
Annex C (normative) Tolerances .64
Annex D (normative) Tolerance limit calculation methods for strength distribution .65
Bibliography .68
iv © ISO 2014 – All rights reserved

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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 21, Equipment for fire protection and fire fighting,
Subcommittee SC 5, Fixed firefighting systems using water.
This third edition cancels and replaces the second edition (ISO 6182-1:2004), of which it constitutes a
minor revision.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler
systems:
— Part 1: Requirements and test methods for sprinklers
— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves
— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
— Part 10: Requirements and test methods for domestic sprinklers
— Part 11: Requirements and test methods for pipe hangers
— Part 12: Requirements and test methods for grooved-end components for steel pipe systems
INTERNATIONAL STANDARD ISO 6182-1:2014(E)
Fire protection — Automatic sprinkler systems —
Part 1:
Requirements and test methods for sprinklers
1 Scope
This part of ISO 6182 specifies performance and marking requirements and test methods for conventional,
spray, flat spray, and sidewall sprinklers. It is not applicable to sprinklers having multiple orifices.
NOTE The requirements for early suppression fast response (ESFR) sprinklers are in ISO 6182-7; the
requirements for domestic sprinklers are in ISO 6182-10; and the requirements for extended coverage (EC)
sprinklers are under development.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
ISO 49, Malleable cast iron fittings threaded to ISO 7-1
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 General
3.1.1
assembly load
force exerted on the sprinkler body excluding hydrostatic pressure
3.1.2
average design strength
glass bulb supplier’s specified and assured lowest average axial design strength of any batch of 50 bulbs
3.1.3
design load
force exerted on the release element at the service load of the sprinkler
3.1.4
housing assembly/escutcheon
ornamental or protective component(s) around the hole from which the sprinkler penetrates the plane
of the ceiling or the wall
Note 1 to entry: See Figure 1.
Note 2 to entry: For the purposes of this part of ISO 6182, housing applies to recessed and concealed sprinklers.
3.1.5
response time index
RTI
measure of sprinkler sensitivity
RTIt= u
where
t is equal to the time constant, expressed in seconds, of the heat-responsive element;
u is the gas velocity, expressed in meters per second.
0,5
Note 1 to entry: The response time index is expressed in units of (m∙s) .
3.1.6
service load
combined force exerted on the sprinkler body by the assembly load of the sprinkler and the equivalent
force of the rated pressure on the inlet
3.1.7
sprinkler
thermosensitive device designed to react at a predetermined temperature by automatically releasing a
stream of water and distributing it in a specified pattern and quantity over a designated area
3.1.8
standard orientation
orientation that produces the shortest response time with the axis of the sprinkler inlet perpendicular
to the airflow
Note 1 to entry: In the case of symmetrical heat-responsive elements, standard orientation is with the airflow
perpendicular to both the axis of the waterway and the plane of the frame arms; in the case of non-symmetrical
heat-responsive elements, it is with the airflow perpendicular to both the waterway axis and the plane of the
frame arms which produces the shortest response time.
3.2 Types of sprinkler according to type of heat-responsive element
3.2.1
fusible element sprinkler
sprinkler that opens under the influence of heat by the melting of a component
3.2.2
glass bulb sprinkler
sprinkler that opens under the influence of heat by the bursting of the glass bulb through pressure
resulting from expansion of the fluid enclosed therein
3.3 Types of sprinkler according to type of water distribution
3.3.1
conventional sprinkler
C
sprinkler giving spherical water distribution directed downward and at the ceiling for a definite
protection area such that 40 % to 60 % of the total water flow is initially directed downward
2 © ISO 2014 – All rights reserved

3.3.2
flat spray sprinkler
F
sprinkler giving water distribution directed downward for a definite protection area, such that 85 %
to 100 % of the total water flow is initially directed downward with a wider spray angle than expected
with a spray sprinkler
Note 1 to entry: This type of sprinkler is used in storage racks and other shallow areas in some countries.
3.3.3
sidewall sprinkler
W
sprinkler giving a one-sided water distribution over a definite protection area
3.3.4
spray sprinkler
S
sprinkler giving paraboloid water distribution directed downward for a definite protection area such
that 80 % to 100 % of the total water flow is initially directed downward
3.4 Types of sprinkler according to position
3.4.1
horizontal sprinkler
H
sprinkler arranged such that the water stream is directed horizontally against the distribution plate
3.4.2
pendent sprinkler
P
sprinkler arranged such that the water stream is directed downwards against the distribution plate
3.4.3
upright sprinkler
U
sprinkler arranged such that the water stream is directed upwards against the distribution plate
3.5 Special types of sprinkler
3.5.1
coated sprinkler
sprinkler that has a factory-applied coating for corrosion protection
Note 1 to entry: For this part of ISO 6182, coated sprinkler does not include coatings intended for aesthetic
purposes.
3.5.2
concealed sprinkler
recessed sprinkler having a cover plate
Note 1 to entry: See Figure 1.
Key
1 ceiling
2 housing assembly
3 cover plate
Figure 1 — Flushed, concealed, and recessed sprinklers
3.5.3
dry sprinkler
assembly comprising of a sprinkler mounted at the outlet of a special extension with a seal at the inlet
that prevents water from entering the extension until it is released by operation of the sprinkler
Note 1 to entry: These sprinklers may consist of pendent, sidewall, or other types.
4 © ISO 2014 – All rights reserved

3.5.4
flush sprinkler
for pendent sprinklers, all or part of the body is mounted above the lower plane of the ceiling, but all of
the heat-responsive collector is below the lower plane of the ceiling; for sidewall sprinklers, the sprinkler
is within the wall, but the heat-responsive collector projects into the room beyond the plane of the wall
Note 1 to entry: See Figure 1.
Note 2 to entry: These are not typically frame arm sprinklers.
3.5.5
multiple orifice sprinkler
MO
sprinkler having two or more outlet orifices arranged to distribute the water discharge in a specified
pattern and quantity for a definite protection area
Note 1 to entry: Multiple orifice sprinklers are excluded from this part of ISO 6182 in the scope.
3.5.6
recessed sprinkler
sprinkler of which all or part of the body, other than the thread, is mounted within a recessed housing
Note 1 to entry: See Figure 1.
3.5.7
sprinkler with water shield
sprinkler, intended for use in racks or beneath open grating, which is provided with a water shield
mounted above the heat-responsive element to protect it from water discharged by sprinklers at higher
elevations
Note 1 to entry: Sprinklers with water shields may be a single unit that is assembled by the manufacturer or a
combination of sprinkler and water shield (which in some countries are evaluated separately from the sprinkler
approval) assembled on site.
3.6 Types of sprinkler according to sprinkler sensitivity
3.6.1
fast-response sprinkler
0,5
sprinkler having a response time index (RTI) ≤50 (m∙s) as determined in 6.14 or for concealed and
recessed sprinklers, a maximum response time of 75 s as determined in 6.25
3.6.2
special-response sprinkler
0,5 0,5
sprinkler having an average response time index (RTI) of between 50 (m∙s) and 80 (m∙s)
3.6.3
standard-response sprinkler
0,5 0,5
sprinkler having a response time index (RTI) of between 80 (m∙s) and 350 (m∙s) or for concealed
and recessed sprinklers, a maximum response time as determined in 6.25
4 Product consistency
4.1 Quality control program
It shall be the responsibility of the manufacturer to implement a quality control program to ensure that
production continuously meets the requirements of this part of ISO 6182.
4.2 Leak resistance testing
Every manufactured sprinkler shall pass a leak resistance test equivalent to a hydrostatic pressure of at
least twice the rated pressure.
4.3 Glass bulb integrity test
Each glass bulb sprinkler assembly shall be evaluated for glass bulb cracking, breaking, or other damage
as indicated by the loss of fluid. The test shall be conducted after the leakage test.
The bubble in each glass bulb shall be examined at room ambient temperature. The sprinkler shall then
be heated in a circulating air oven or liquid bath to 5 °C below the minimum operating temperature range
of the sprinkler. The bubble shall then be examined to determine if the bubble size has been reduced in
accordance with the glass bulb manufacturer’s specifications. After cooling, the bubble size shall again
be examined to determine if the bubble returned to the original size within the tolerance allowed by the
glass bulb manufacturer.
5 Product assembly
5.1 General
All sprinklers shall be designed and manufactured such that they cannot be readily adjusted, dismantled,
or reassembled.
NOTE This requirement does not apply to units intended for assembly/adjustment on site, e.g. combinations
of sprinkler and housing assemblies/escutcheons or the assembly of the cover plate to concealed sprinklers.
5.2 Dynamic O-ring seals
The closure of the waterway shall not be achieved by the use of a dynamic O-ring or similar seal. (An
O-ring or similar seal moves during operation or is in contact with a component that moves during
operation.)
5.3 Rated pressure
Sprinklers shall have a rated pressure of not less than 1,2 MPa (12 bar).
5.4 Dry sprinklers
When installed with the intended fittings specified in the manufacturer’s installation instructions, dry
sprinklers in dry systems shall be constructed to minimize the potential to accumulate water, scale, and
sediment on the sprinkler inlet. The sprinkler inlet shall also be constructed not to substantially impact
the sprinkler K-factor or pressure loss through the fitting.
6 Requirements
6.1 Dimensions
6.1.1 Orifice size
6.1.1.1 All sprinklers shall be constructed so that a sphere of diameter 8 mm can pass through each
water passage in the sprinkler, with the exceptions specified in 6.1.1.2.
6 © ISO 2014 – All rights reserved

6.1.1.2 In those countries where 6 mm or 8 mm orifice automatic sprinklers are acceptable, and the
sprinklers are used together with a strainer in the system or in each sprinkler, a 5 mm sphere may be used
for checking the size of each water passage.
In those countries where sprinklers having multiple water passages are acceptable, and the sprinklers
are used together with a strainer in the system or in each sprinkler, a 3 mm sphere may be used for
checking the size of each water passage.
6.1.2 Nominal thread sizes
Nominal thread sizes shall be suitable for fittings threaded in accordance with ISO 7-1. The dimensions
of all threaded connections should conform to International Standards where applied or shall conform
to national standards where International Standards are not applicable.
6.2 Temperature ratings and colour coding
The marked nominal temperature rating and colour coding of the sprinkler shall be in accordance with
Table 1.
Table 1 — Nominal temperature rating and colour coding
Glass bulb sprinklers Fusible element sprinklers
Marked nominal tempera- Marked nominal temperature
Yoke arm colour
ture rating Liquid colour code rating
code
°C °C
57 orange 57 to 77 uncoloured
68 red
79 yellow 80 to 107 white
93, 107 green
121, 141 blue 121 to 149 blue
163, 182 mauve 163 to 191 red
204, 227, 260, 343 black 204 to 246 green
260 to 302, 320 to 343 orange
NOTE See 8.1 for concealed, flush, coated, and plated sprinklers.
6.3 Operating temperature (see 7.4)
Sprinklers shall be verified to operate within a temperature range of
t = x ± (0,035x + 0,62) °C
where
t is the temperature range, rounded to the nearest 0,1 °C;
x is the marked nominal temperature rating (see Table 1).
6.4 Water flow and distribution
6.4.1 Water flow constant (see 7.5)
The flow constant, K, for sprinklers is given by the formula:
q
K =
10p
where
p is the pressure, expressed in megapascals (MPa);
q is the flow rate, expressed in litres per minute.
The K-factor for sprinklers, according to this part of ISO 6182, shall be in accordance with Table 2 when
determined by the test method given in 7.5.
6.4.2 Water distribution (see 7.6)
6.4.2.1 When tested in accordance with 7.6, the sprinkler shall meet the following applicable
requirements.
For other than sidewall types, the number of containers having less than 50 % of the water coverage,
as specified in Column 2 of Table 5, shall not exceed the permitted number of containers with a lower
content of water, as specified in Column 6 of Table 5.
6.4.2.2 Sidewall sprinklers must meet the following requirements.
In the area between the sidewall sprinklers, the back wall shall be completely wetted from the floor up
to 1,2 m below the deflector (see Figure 11).
The total quantity of water collected along the back wall shall be a minimum of 3,5 % of the total water
discharged from the sprinklers during the test.
½
For sidewall sprinklers having a nominal K-factor of 80 (l/min)/(bar ) or less, the water flow rate shall
be 57 l/min for each sprinkler. The average water collection rate in the containers shall be not less than
2 mm/min and the minimum water collection rate in any individual pan shall be 1,2 mm/min.
½
For sidewall sprinklers having a nominal K-factor of 115 (l/min)/(bar ), the water flow rate shall be
78 l/min for each sprinkler. The average water collection rate in the containers shall be not less than
2,8 mm/min and the minimum water collection rate in any individual pan shall be 1,2 mm/min.
6.4.2.3 The water discharge of sprinklers downward from the deflectors shall be
— 40 % to 60 % for conventional sprinklers,
— 85 % to 100 % for flat spray sprinklers, and
— 80 % to 100 % for spray sprinklers.
Exception: this requirement does not apply to recessed, flush, concealed, and sidewall sprinklers.
8 © ISO 2014 – All rights reserved

Table 2 — Flow constant requirements
Flow constant Flow constant
K K for dry sprinklers
½ ½
(l/min)/(bar ) (l/min)/(bar )
57 ± 3 57 ± 5
80 ± 4 80 ± 6
115 ± 6 115 ± 9
½ 3 ½
NOTE 1 (l/min)/(bar ) = 0,003 2 (m /min)/(MPa ).
6.5 Function (see 7.7)
6.5.1 Lodgement (see 7.7.1)
When tested in accordance with 7.7.1, the sprinkler shall open and any lodgement of released parts shall
be cleared within 60 s of release of the heat-responsive element.
If lodgement occurs at any pressure level and test arrangement, 25 additional sprinklers shall be tested
in that arrangement and at that pressure. The total number of sprinklers in which lodgement occurs
shall not exceed one out of the 30 sprinklers tested at that pressure and in that arrangement.
6.5.2 Deflector strength (see 7.7.2)
The deflector and its supporting parts shall not sustain significant damage as a result of the deflector
strength test specified in 7.7.2.
If minor damage is noted, testing in accordance with 6.4.2 can be done to demonstrate compliance.
NOTE In most instances, visual examination of the sprinkler will be sufficient to establish conformance with
6.5.2.
6.6 Service load and strength of sprinkler body (see 7.8)
6.6.1 The sprinkler body shall comply with the requirements of 6.6.1.1 or 6.6.1.2.
6.6.1.1 The sprinkler body shall not show permanent elongation of more than 0,2 % between the load-
bearing points of the sprinkler body after being subjected to twice the service load as measured according
to 7.8.1 or 7.8.2.
6.6.1.2 The sprinkler body shall not show permanent elongation of more than 50 % of the sprinkler
body with the design load being applied after being subjected to twice the assembly load as measured
according to 7.8.3.
6.6.2 The manufacturer shall specify the average and upper limits of the service or assembly load.
6.7 Strength of heat-responsive element (see 7.9)
6.7.1 When tested in accordance with 7.9.1, glass bulb elements shall
a) have an average design strength of at least six times the average service load and
b) have a design strength lower tolerance limit (LTL) on the strength distribution curve of at least twice
the upper tolerance limit (UTL) of the service load distribution curve, based on calculations with a
degree of confidence (γ) of 0,99 for 99 % of samples (P), based on normal or Gaussian distribution,
except where another distribution can be shown to be more applicable due to manufacturing or
design factors (see Figure 2).
Key
1 average service load
2 service load curve
3 UTL
4 LTL
5 average design strength
6 design strength curve
Figure 2 — Strength curve
6.7.2 A fusible heat-responsive element in the ordinary temperature range shall be designed to
a) sustain a load of 15 times its design load corresponding to the maximum service load measured
according to 7.8 for a period of 100 h when tested in accordance with 7.9.2.1 or
b) demonstrate the ability to sustain the design load when tested in accordance with 7.9.2.2 (see
Annex A).
6.8 Leak resistance and hydrostatic strength (see 7.10)
6.8.1 A sprinkler shall not show any sign of leakage when tested according to 7.10.1.
6.8.2 A sprinkler shall not rupture, operate, or release any parts when tested according to 7.10.2.
6.9 Heat exposure (see 7.11)
6.9.1 Glass bulb sprinklers
There shall be no damage to the glass bulb element when the sprinkler is tested according to 7.11.1.
10 © ISO 2014 – All rights reserved

6.9.2 Uncoated sprinklers
Sprinklers shall withstand exposure to increased ambient temperature without evidence of weakness
or failure when tested according to 7.11.2.
6.9.3 Coated sprinklers
In addition to meeting the requirement of 6.9.2 in an uncoated version, coated sprinklers shall withstand
exposure to increased ambient temperatures without evidence of weakness or failure of the coating
when tested according to 7.11.3.
6.10 Thermal shock for glass bulb sprinklers (see 7.12)
Glass bulb sprinklers shall not be damaged when tested according to 7.12. Following the thermal shock
exposure, the sprinkler shall comply with 6.5.1 when tested with an inlet pressure of 0,035 MPa (0,35
bar).
6.11 Corrosion (see 7.13)
6.11.1 Stress corrosion for copper-based alloy components (see 7.13.1)
When tested in accordance with 7.13.1, each sprinkler shall not show any cracks, signs of delamination,
or failure that can affect its ability to function as intended.
6.11.2 Sulfur dioxide/carbon dioxide corrosion (see 7.13.2)
NOTE In some countries, this test is not mandatory.
Coated and uncoated sprinklers shall be resistant to sulfur dioxide/carbon dioxide saturated with water
vapour when conditioned in accordance with 7.13.2.
Following exposure, glass bulb sprinkler samples shall either be
a) tested at 0,035 MPa (0,35 bar) in accordance with 6.5.1 or
b) meet the requirements of 6.25 for concealed and recessed sprinklers or the requirements of 6.14.2
for other types of sprinklers.
Following exposure, half of the fusible element sprinkler samples shall be functionally tested at 0,035 MPa
(0,35 bar) only in accordance with 6.5.1 and the remaining samples shall meet the requirements of 6.25
for concealed and recessed sprinklers or the requirements of 6.14.2 for other types of sprinklers.
6.11.3 Hydrogen sulfide corrosion (see 7.13.3)
NOTE In some countries, this test is not mandatory.
Coated and uncoated sprinklers shall be resistant to hydrogen sulfide saturated with water vapour
when conditioned in accordance with 7.13.3.
Following exposure, glass bulb sprinkler samples shall either be
a) tested at 0,035 MPa (0,35 bar) in accordance with 6.5.1 or
b) meet the requirements of 6.25 for concealed and recessed sprinklers or the requirements of 6.14.2
for other types of sprinklers.
Following exposure, half of the fusible element sprinkler samples shall be functionally tested at 0,035 MPa
(0,35 bar) only in accordance with 6.5.1 and the remaining samples shall meet the requirements of 6.25
for concealed and recessed sprinklers or the requirements of 6.14.2 for other types of sprinklers.
6.11.4 Salt spray loading (see 7.13.4)
NOTE In some countries, the salt spray corrosion test (6.11.6) is conducted instead of the salt spray loading
test.
Coated and uncoated sprinklers shall be resistant to salt spray when conditioned in accordance with
7.13.4.
Following exposure, glass bulb sprinkler samples shall either be
a) tested at 0,035 MPa (0,35 bar) in accordance with 6.5.1 or
b) meet the requirements of 6.25 for concealed and recessed sprinklers or the requirements of 6.14.2
for other types of sprinklers.
Following exposure, half of the fusible element sprinkler samples shall be functionally tested at 0,035 MPa
(0,35 bar) only in accordance with 6.5.1 and the remaining samples shall meet the requirements of 6.25
for concealed and recessed sprinklers or the requirements of 6.14.2 for other types of sprinklers.
6.11.5 Moist air exposure (see 7.13.5)
Sprinklers shall be resistant to moist air exposure when tested in accordance with 7.13.5. Following
exposure, the sprinklers shall be functionally tested at 0,035 MPa (0,35 bar) only in accordance with
6.5.1.
6.11.6 Salt spray corrosion (see 7.13.6)
NOTE In some countries, the salt spray loading test (6.11.4) is conducted instead of the salt spray corrosion
test.
Coated and uncoated sprinklers shall be resistant to salt spray when conditioned in accordance with
7.13.6.
Following exposure, glass bulb sprinkler samples shall either be
a) tested at 0,035 MPa (0,35 bar) in accordance with 6.5.1 or
b) meet the requirements of 6.25 for concealed and recessed sprinklers or the requirements of 6.14.2
for other types of sprinklers.
Following exposure, half of the fusible element sprinkler samples shall be functionally tested at 0,035 MPa
(0,35 bar) only in accordance with 6.5.1 and the remaining samples shall meet the requirements of 6.25
for concealed and recessed sprinklers or the requirements of 6.14.2 for other types of sprinklers.
6.12 Coated sprinklers (see 7.14)
...