FprEN ISO 15027-3

SLOVENSKI STANDARD
oSIST prEN ISO 15027-3:2023
01-julij-2023
Potopne obleke - 3. del: Preskusne metode (ISO/DIS 15027-3:2023)
Immersion suits - Part 3: Test methods (ISO/DIS 15027-3:2023)
Schutzkleidung gegen Unterkühlung im Wasser - Teil 3: Prüfverfahren (ISO/DIS 15027-
3:2023)
Combinaisons de protection thermique en cas d'immersion - Partie 3: Méthodes d'essai
(ISO/DIS 15027-3:2023)
Ta slovenski standard je istoveten z: prEN ISO 15027-3
ICS:
13.340.10 Varovalna obleka Protective clothing
oSIST prEN ISO 15027-3:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 15027-3:2023
oSIST prEN ISO 15027-3:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 15027-3
ISO/TC 188/SC 1 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2023-05-03 2023-07-26
Immersion suits —
Part 3:
Test methods
Combinaisons de protection thermique en cas d'immersion —
Partie 3: Méthodes d'essai
ICS: 13.340.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 15027-3:2023(E)
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. © ISO 2023

oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 15027-3
ISO/TC 188/SC 1 Secretariat: AFNOR
Voting begins on: Voting terminates on:

Immersion suits —
Part 3:
Test methods
Combinaisons de protection thermique en cas d'immersion —
Partie 3: Méthodes d'essai
ICS: 13.340.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
ISO copyright office
USER PURPOSES, DRAFT INTERNATIONAL
CP 401 • Ch. de Blandonnet 8
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
CH-1214 Vernier, Geneva
POTENTIAL TO BECOME STANDARDS TO
Phone: +41 22 749 01 11
WHICH REFERENCE MAY BE MADE IN
Reference number
Email: copyright@iso.org
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 15027-3:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Testing of the device .3
4.1 General . 3
4.2 Sampling . 3
4.3 Temperature cycling test . . 3
4.3.1 General . 3
4.3.2 Procedure . 4
4.4 Rotating shock bin test . 4
4.4.1 General . 4
4.4.2 Apparatus . 4
4.4.3 Procedure . 4
4.4.4 Evaluation . . 4
4.5 Tensile strength of seams . 5
4.6 Fuel resistance test . 5
4.7 Buoyancy test . 5
4.7.1 Principle . 5
4.7.2 Apparatus . 6
4.7.3 Procedure . 6
4.7.4 Results . 6
4.8 Suit strength test . 6
4.8.1 Principle . 6
4.8.2 Apparatus . 6
4.8.3 Procedure . 6
4.8.4 Results . 7
4.9 Lifting loop test . 7
4.9.1 Procedure . 7
4.9.2 Results . 8
4.10 Flammability test . 8
4.10.1 Principle . 8
4.10.2 Apparatus . 8
4.10.3 Sampling . 8
4.10.4 Procedure . 9
4.10.5 Evaluation . 9
4.11 Cleaning . 10
4.12 Human test subjects . 10
4.12.1 Instruction and selection . 10
4.12.2 Number and sizes of human test subjects . 10
4.12.3 Gender of human test subjects . 10
4.12.4 Fitness of human test subjects . 10
4.12.5 Dress of human test subjects. 11
4.12.6 Pass/fail criteria . 11
4.13 Leakage measurement. 11
4.13.1 Leakage measurement for jumping . 11
4.13.2 Water ingress measurement for swimming .12
4.14 Thermal test.12
4.14.1 Using a thermal manikin .12
4.14.2 Using human test subjects . 15
4.15 Ergonomic performance testing . 18
4.15.1 General . 18
4.15.2 Donning . 18
iii
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.15.3 Walking . 19
4.15.4 Climbing . 19
4.15.5 Dexterity and mobility . 20
4.16 In-water performance and field of vision tests . 21
4.16.1 Jump test . 21
4.16.2 Secondary donning . . 21
4.16.3 Turning test . 21
4.16.4 Conspicuity . 21
4.16.5 Field of vision. 22
4.16.6 Swim and boarding test .22
4.17 Helicopter transit suits .23
4.17.1 Helicopter escape (for helicopter transit suits as specified by ISO 15027-1
only) . 23
4.17.2 Buoyancy measurement (for helicopter transit suits only) .23
Annex A (normative) Test results — Uncertainty of measurement .24
Annex B (normative) Test protocol and checklist for manikin testing .25
Annex C (normative) Thermal manikin – Means of circulated water .32
Annex D (normative) Correlation of thermal manikin systems.33
Annex E (normative) Thermal insulation identification for suit material — Test methods .35
Annex F (informative) Medical fitness assessment for human thermal testing in cold water .42
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation 2016/425 aimed to be covered .43
Bibliography .47
iv
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 188, Small craft, Subcommittee SC 1,
Personal safety equipment.
This third edition cancels and replaces the second edition (ISO 15027-3:2012), which has been
technically revised.
The main changes are as follows:
— Terms and conditions have been added;
— in Clause 4, the order of testing has been changed and clarified;
— in Subclause 4.3, a temperature and cycling test procedure for suits stored in sealed storage bags
has been added;
— in Subclause 4.5, a test for tensile strength of seams has been added;
— in Subclause 4.7, a buoyancy test has been added;
— in Subclause 4.8, a suit strength test has been added;
— in Subclause 4.9, a lifting loop test has been added;
— in Subclause 4.12.2, the number and sizes of human test subjects have been revised;
— in Subclause 4.14.1, the use of a thermal manikin has been revised;
— Annex B "Test protocol and checklist for manikin testing" has been added;
— Annex C "Thermal manikin – Means of circulated water" has been added;
— Annex D "Correlation of thermal manikin systems" has been added;
— Annex E "Thermal insulation identification for suit material — Test methods" has been added;
v
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
— Annex F "Medical fitness assessment for human thermal testing in cold water" has been added.
A list of all parts in the ISO 15027 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
vi
oSIST prEN ISO 15027-3:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 15027-3:2023(E)
Immersion suits —
Part 3:
Test methods
1 Scope
This part of ISO 15027 specifies the test methods for constant wear suits and abandonment suits.
Requirements for constant wear suits are given in ISO 15027-1:20xx and requirements for abandonment
suits are given in ISO 15027-2:20xx.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 590, Automotive fuels — Diesel — Requirements and test methods
EN 14225-1:2017, Diving suits - Part 1: Wet suits - Requirements and test methods
ISO 811, Textile fabrics — Determination of resistance to water penetration — Hydrostatic pressure test
ISO 12402:2020, (all parts), Personal flotation devices
ISO 2768-1:1989, General tolerances; tolerances for linear and angular dimensions without individual
tolerance indications
ISO 12894:2001, Ergonomics of the thermal environment — Medical supervision of individuals exposed to
extreme hot or cold environments
ISO 13935-2, Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 2:
Determination of maximum force to seam rupture using the grab method
ISO 15027-1:20xx, Immersion suits — Part 1: Constant wear suits, requirements including safety
ISO 15027-2:20xx, Immersion suits — Part 2: Abandonment suits, requirements including safety
ISO 15831:2004, Clothing - Physiological effects - Measurement of thermal insulation by means of a thermal
manikin
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
immersion suit
suit designed to protect the user's body from the cooling effects of immersion in water
Note 1 to entry: Cooling effects include cold shock (3.21) and hypothermia (3.14).
[SOURCE: ISO 15027-1:20xx, 3.1]
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
3.2
constant wear suit
immersion suit designed to be routinely worn for activities on or near water in anticipation of
immersion in water, but permitting physical activity to such an extent that actions can be undertaken
without undue encumbrance and thus, head, hands and feet need not be covered
[SOURCE: ISO 15027-1:20xx, 3.2]
3.3
abandonment suit
immersion suit including head, hand and feet protection designed to permit rapid donning in the event
of an imminent immersion in water
[SOURCE: ISO 15027-1:2012, 3.3]
3.4
secondary suit closure
additional closure which can be operated by the user to enhance the fit of the suit
[SOURCE: ISO 15027-1:20xx, 3.7]
3.5
exterior fabric
outer fabric of a suit, either in the form of a single or composite fabric
[SOURCE: ISO 15027-1:20xx, 3.9]
3.6
retro‑reflective material
material that reflects light beams back to their point of origin
[SOURCE: ISO 15027-1:20xx, 3.10]
3.7
buddy line
length of cord which can be tied or otherwise fixed to another person, or to that person’s personal
flotation device or other objects, so as to keep a user in the vicinity of that person or object with a view
to making location and thus rescue easier
[SOURCE: ISO 15027-1:20xx, 3.12]
3.8
clo
unit to express the relative thermal insulation values of various clothing assemblies
2 –1
Note 1 to entry: One clo is equal to 0,155 Km W .
[SOURCE: ISO 15027-1:20xx, 3.13]
3.9
hypothermia
condition where body core temperature is below 35 °C
[SOURCE: ISO 15027-1:20xx, 3.14]
3.10
helicopter transit suit
constant wear suit worn by helicopter occupants
[SOURCE: ISO 15027-1:20xx, 3.16]
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
3.11
suit system
suit system
immersion suit including its components and accessories, and any auxiliary buoyancy or PFD
Note 1 to entry: Storage bag is not part of the suit system.
3.12
underclothing
clothes worn under the suit system
[SOURCE: ISO 15027-1:20xx, 3.19]
3.13
cold shock
short transitory phase lasting about 2 to 3 min upon sudden immersion in cold water and characterized
by an uncontrollable hyperventilation accompanied by other cardio-respiratory distress
[SOURCE: ISO 15027-1:20xx, 3.21]
3.14
personal flotation device
PFD
garment or device which, when correctly worn and used in water, provides the user with a specific
amount of buoyancy which increases the likelihood of survival
4 Testing of the device
4.1 General
Requirements, for which no special test methods are given in this document, shall be tested in one of
the following ways:
a) by tests referred to in ISO 15027-1 and ISO 15027-2; or
b) by measurement; or
c) by visual assessment; or
d) by functional test.
Prior to testing, materials and components shall be conditioned for (24 ± 0,1) h under standard
atmosphere. The temperature cycling test and the rotating shock bin test shall be carried out as pre-
conditioning before any other tests are carried out.
4.2 Sampling
Where materials and components are common to a range of suits, it is permitted to test just one sample
of each material or component, unless specified otherwise by the relevant test procedure.
4.3 Temperature cycling test
4.3.1 General
The temperature cycling test shall be carried out as a preconditioning before all other tests.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.3.2 Procedure
The suit, along with any attachments, shall be subjected to the following exposures with the suit packed
in accordance with the manufacturer's instructions.
If the suit is to be supplied in a sealed storage bag such as hermetically sealed or vacuum packed, the
suit samples shall be exposed to this test in this condition, including the storage method.
The suit shall be subjected to 10 alternating cycles of 8 h continuous exposures to temperatures of
(65 ± 2) °C and (– 30 ± 2) °C. These alternating temperatures need not follow immediately after each
other. On completion of the temperature cycling test, the suit shall be visually inspected for signs of
degradation to the materials or construction or to any attachments.
4.4 Rotating shock bin test
4.4.1 General
The rotating shock bin test shall be carried out as a preconditioning after the temperature cycling test
in 3.3 but before all other tests.
4.4.2 Apparatus
The equipment used shall be that shown in Figure 1, consisting of a box of specific design made from
plywood board or equivalent, the inside surface of which shall be coated with hard plastic laminate or
similar. The bearing of the bin shall be in the centre of the mass and permit the bin to be rotated freely.
4.4.3 Procedure
Place the suit in the shock bin through a flush panel in one of the shock bin's faces, then close and secure
it. The shock bin shall be operated for a total of 150 rotations at a steady rate of 6 rotations per minute.
4.4.4 Evaluation
On completion of the rotations, the suit shall be removed from the shock bin and examined by the panel
for signs of wear and tear, and for any signs that the thermal insulation material has migrated.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
Dimensions in millimetres
NOTE In this figure, dimensions are identical once rotated 180° on its central axis.
Figure 1 — Design of rotation shock bin apparatus
4.5 Tensile strength of seams
The tensile strength of seams shall be measured on separate samples using the grab method given in
ISO 13935-2, using specimens of at least 60 mm width and with at least 100 mm of material on each side
of the test point, with four similar seams for each type of seam including the seam between fastening
devices, including zip fasteners, and fabric
4.6 Fuel resistance test
Place three samples each of all exterior fabrics, typical seams, apertures and components in a suitable
container and submerge them under a 100 mm head of diesel according to EN 590 at a temperature of
(20 ± 2) °C for 24 h. After removal from the container, remove the surface oil by wiping. Subject the
samples to a hydrostatic test according to ISO 811 with a speed of 10 cm/min until 1 000 mm water
head and then carry out a tensile seam strength test according to 3.5.
4.7 Buoyancy test
4.7.1 Principle
The buoyancy of a suit that is designed to be used without a PFD shall be measured using Archimedes’
principle of weighing the submerged device in water, as specified below.
Any inflatable chambers required to meet ISO 15027-2:20xx, 4.11.8 shall be inflated.
The buoyancy loss of the suit shall be measured and recorded after entrapped air has been removed
and 24 h after the initial buoyancy has been measured.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.7.2 Apparatus
The standard equipment required consists of:
a) a weighted cage, whose submerged weight is greater than 1,1 times its expected buoyancy value,
and
a) a tank of fresh water deep enough to accommodate the device horizontally with its upper surface at
a depth of 100 mm to 150 mm below the water surface without contacting the sides of the tank or
the bottom and supported by a calibrated load cell or balance.
4.7.3 Procedure
The suit shall be enclosed in the weighted cage.
The cage shall be suspended from the load cell in fresh water at a temperature of (20 ± 5) °C so that the
upper surface of the horizontally positioned suit is submerged at 100 mm to 150 mm below the surface.
The immersed combined weight shall be recorded as A.
The assembly shall remain immersed for (24,0 + 0,5 -0) h, after which time the combined weight shall
again be recorded as B.
The suit shall finally be removed from the cage. The weighted cage shall again be immersed and the
result again recorded as C.
The water temperature, air temperature, and atmospheric pressure shall be recorded at the start of
each test and then after completion of each test.
4.7.4 Results
The buoyancy values shall be corrected to a temperature of 20 °C and an atmospheric pressure of
101,325 kPa.
The initial buoyancy is obtained by substracting A from C. The final buoyancy is obtained by
substracting B from C. The buoyancy lost during immersion is obtained by substracting the final
buoyancy from the initial buoyancy.
4.8 Suit strength test
4.8.1 Principle
The suit shall be subject to tension via its integral structure, such as waist belt or harness arrangement,
by means of a specified load.
4.8.2 Apparatus
The apparatus consists of a horizontally suspended upper cylinder, of diameter (50 ± 5) mm for child
suits, or of diameter (125 ± 10) mm for adult suits. The length of the test cylinder shall be sufficient to
accommodate the full width of the portion of the suit under test, as shown in Figure 2.
4.8.3 Procedure
The suit shall withstand a load of 1 350 N for 30 minutes, without tearing, seams ripping, parts breaking,
or other damage that permits water entry or otherwise affect the intended performance of the suit.One
sample of the suit is to be tested. Prior to the application of the load, the suit is to be immersed in water
for at least 2 minutes. The suit is to be placed in the test apparatus immediately after the immersion.
The load is to be applied by means of two cylinders, as illustrated in Figure 2.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
With the suit supported by the top cylinder and the primary closures of the suit closed and adjusted to
simulate use, a weight is to be attached to the bottom cylinder by means of ropes or cables to apply the
required load to the suit. When required, to accommodate the test apparatus, the suit is to be cut at the
wrists or waist, or holes are to be cut into the suit.
Figure 2 — Suit strength test
4.8.4 Results
The suit shall be examined for any failures resulting in functional damage of the suit.
4.9 Lifting loop test
4.9.1 Procedure
The suit shall be fitted to the appropriately sized dummy such as that shown in ISO 12401:2009,
5.2.2.1 or the appropriately sized test form (see Figure 3) according to the manufacturer's donning and
adjustment instructions.
A cylinder (50 ± 5) mm in diameter, shall be put through the loop and a load of 3 200 N shall be applied
steadily until the suit is hanging freely. The load shall be maintained for 30 minutes and shall include
the weight of the dummy or test form (see Figure 3).
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
Key
Dimensions in millimeters
Size A B C D E F G H I
Adult 610 114 76,2 127 381 432 508 25,4 178
Child 508 102 76,2 102 279 330 406 22,2 152
Infant 305 63,5 38,1 63,5 191 203 241 19,1 76,2
Figure 3 — Test form for vertical load test, lifting loop and buddy lines
Note General tolerances ISO 2768-1:1989, tolerance level "v".
4.9.2 Results
The suit and lifting loop shall be examined for any failures resulting in functional damage of the suit.
4.10 Flammability test
4.10.1 Principle
The test suit system is passed over a test pan with burning test fuel to determine if the suit system
burns or continues to melt after removal.
4.10.2 Apparatus
Test pan, (300 ± 20) mm × (350 ± 20) mm × (65 ± 5) mm.
Test fuel: petrol or n-heptane.
4.10.3 Sampling
One suit system shall be subjected to the flammability test.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.10.4 Procedure
Place the test pan in a draught-free area so that the suit system, travels freely across the diagonal
distance of the test pan.
Fill the test pan with water to a depth of 10 mm, followed by enough petrol or n-heptane to make a
minimum total depth of 40 mm.
Ignite the petrol or n-heptane and allow to burn freely for 30 s.
Drape the suit system over a suitable hanger, folded at the waist with the front outward. The bottom of
the suit shall be (250 ± 20) mm from the top edge of the test pan, see Figure 4. Secure loose parts above
the lower part of the suit.
Then expose the suit system at a constant speed that allows the suit system and storage bag to be
exposed to the flames for 2 ± 0,1 s. The suit system shall start and finish the test 2 m away from the
closest edge of the test pan.
4.10.5 Evaluation
It shall be reported if the suit system is destroyed by the flames. It shall be reported whether the suit
sustains burning or continues melting 6 s after being removed from the flames.
Dimensions in millimetres
Key
1 suit
2 test pan
a
Start.
b
Finish.
Figure 4 — Flammability test
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.11 Cleaning
Suit samples shall be cleaned in accordance with the manufacturer's cleaning instructions to condition
them prior to leakage measurement and thermal testing. The number of cleaning cycles recommended
by the manufacturer or five cleaning cycles shall be undertaken.
4.12 Human test subjects
4.12.1 Instruction and selection
All human test subjects shall be familiar with the use of the suit under test. They shall be informed and
instructed on the potential hazards of the tests.
4.12.2 Number and sizes of human test subjects
Where tests call for the use of human test subjects, unless otherwise specified, six people shall be used,
each wearing a suit of the appropriate size for the test subject, fitted in accordance with the stated
height and chest size of the suit. Their body sizes shall be within the heights and masses shown in
Table 1.
Table 1 — Human test subject sizes
Height Mass
Subject Category
mm kg
1 1 400 to 1 600 1 person under 60
2 1 400 to 1 600 1 person over 60
3 1 601 to 1 800 1 person under 70
4 1 601 to 1 800 1 person over 70
5 > 1 800 1 person under 80
6 > 1 800 1 person over 100
NOTE Size categories relate to the size of test subjects only and do not relate to the size ranges of the suit
products.
When selecting test subjects, care should be taken to achieve an evenly spaced range of subject heights
and weights.
In the event that a size of suit system is not accommodated by the above selection of subjects, an
additional subject shall be used to ensure all sizes are tested.
In addition, if certain subject sizes in Table 1 are not applicable for the specific suit sizing, then subjects
within the size range of the suits shall be selected, for a total of six subjects. The sizes of the subject
should be evenly distributed as much as possible to cover the range appropriate for the suit.
4.12.3 Gender of human test subjects
At least one and not more than three of the persons should be females.
4.12.4 Fitness of human test subjects
The persons complying with the criteria of 3.12.1 shall be capable of relaxing when in water out of their
depth, be able to swim for 20 min and cover a distance of 350 m with the aid of an approved personal
flotation device as recommended by the manufacturer and, after sufficient rest, board the liferaft or
platform specified in 3.16.6.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
4.12.5 Dress of human test subjects
Throughout the following tests, unless otherwise specified, the underclothing specified by the
manufacturer or, if not specified by the manufacturer, the standard underclothing according to 3.14.1.2
shall be worn by each human test subject.
4.12.6 Pass/fail criteria
All samples shall pass all objective tests for the entire device to meet the requirements of
ISO 15027-1:20xx or ISO 15027-2:20xx. However, due to the high variability between human test
subjects and the difficulty in assessing some subjective measures, it is permitted that a device does
1)
not completely meet the requirements of the following subjective tests in a single sample and in no
more than one human test subject. In these circumstances, two other human test subjects within the
same weight category and with the same gender, wearing the same size of suit should be subjected to
the same test and before the same test panel as at 3.15.3. If this additional test is still not clearly passed
as required in ISO 15027-1:20xx or ISO 15027-2:20xx, then the device shall be deemed to have failed,
whilst if it is clearly passed by the additional two subjects, the test panel may deem that the device has
passed the test overall.
4.13 Leakage measurement
4.13.1 Leakage measurement for jumping
3.13.1.1 All suit samples shall have been cleaned in accordance with 3.11 prior to the leakage tests.
3.13.1.2 Each human test subject shall wear the suit system with the standard underclothing as
specified by the manufacturer or, if not specified by the manufacturer, the standard underclothing
according to 3.14.1.2. The human test subject shall carefully enter the pool using the pool ladder and
remain there for at least 2 min in order to completely pre-wet the suit. The suit shall be vented of excess
air prior to this test according to the instructions of the manufacturer. If a personal flotation device
(PFD) is not required and there is an inflatable element on the suit, it shall not be inflated for this test.
3.13.1.3 The human test subject shall then climb out using the pool ladder, crouch, stretch, shake limbs
and then stand to permit excess water to run off the exterior of the suit and to remove the water from
all trapped areas. After 1 min the human test subject shall be weighed, in order to establish the human
test subject's gross weight before the leak test starts. The weighing scales shall have a capacity up to
150 kg, and a resolution of 0,02 kg or better.
3.13.1.4 Immediately after the "pre-wetting" and weighing, a PFD shall be donned and inflated if
required. The human test subject shall then cover the mouth and nose with one hand and cross the
other arm over the top, grasping the shoulder of the suit or of the PFD. The human test subject shall
+05,
then jump vertically, feet first, into the pool from a height of (,45 )m .
3.13.1.5 After the jump, the human test subject shall climb out using the pool ladder, remove the PFD
if used, crouch, stretch, shake limbs and then stand to remove free water from all trapped areas. After
1 min the human test subject shall be weighed again. The increase in weight shall be recorded, as the
leakage from jumping for that individual test subject.
The mean shall be calculated from the individual leakage results of all of the subjects' jump tests.
The mean amount of water ingress from jumping is to be added to used together with the mean amount
of leakage from swimming (see 3.13.2.4) as the amount of leakage for the thermal test according to
3.14. to be used together with the amount of leakage from swimming (see 3.13.2.4) as the amount of
1) For the purpose of this clause, "subjective tests" includes all tests that require the participation of human test
subjects.
oSIST prEN ISO 15027-3:2023
ISO/DIS 15027-3:2023(E)
leakage for the thermal test according to 3.14. The suit shall then be removed to record the location of
leakage in the suit and the areas of wetted underclothing.
4.13.2 Water ingress measurement for swimming
3.13.2.1 Following the leakage measurement for jumping, the human test subject shall re-don the suit
system using a dry set of underclothing and vent the suit. The human test subject shall then carefully
enter the pool using the pool ladder and remain there for at least 2 min in order to completely pre-wet
the suit.
3.13.2.2 The human test subject shall then climb out using the pool ladder, crouch, stretch, shake limbs
and then stand to permit excess water to run off the exterior of the suit and to remove the water from
all trapped areas. After 1 min the human test subject shall be weighed in order to establish the human
test subject's gross weight before the swim starts.
3.13.2.3 Immediately after the "pre-wetting" and weighing, any hand protection provided with the
suit shall be donned and a PFD shall be donned and inflated if required. The human test subject shall
then carefully re-enter the pool using the pool ladder and swim on the back for 20 min, covering a
distance of at least 350 m in this time. The hands and arms shall be kept in the water even if not being
used for propulsion.
3.13.2.4 After the swim, the human test subject shall climb ou
...