SIST EN 15999-2:2025

SLOVENSKI STANDARD
01-september-2025
Ohranjanje kulturne dediščine - Smernice za načrtovanje vitrin za razstavljanje in
hrambo predmetov - 2. del: Tehnični vidiki
Conservation of cultural heritage - Guidelines for design of showcases for exhibition and
preservation of objects - Part 2: Technical aspects
Erhaltung des kulturellen Erbes - Leitfaden für die Konstruktion von Schauvitrinen zur
Ausstellung und Erhaltung von Objekten - Teil 2: Technische Aspekte
Conservation du patrimoine culturel - Lignes directrices pour la conception de vitrines
destinées à exposer et préserver des biens culturels - Partie 2 : Aspects techniques
Ta slovenski standard je istoveten z: EN 15999-2:2025
ICS:
97.195 Umetniški in obrtniški izdelki. Items of art and handicrafts.
Kulturne dobrine in kulturna Cultural property and
dediščina heritage
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15999-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2025
EUROPÄISCHE NORM
ICS 97.195
English Version
Conservation of cultural heritage - Guidelines for design of
showcases for exhibition and preservation of objects - Part
2: Technical aspects
Conservation du patrimoine culturel - Lignes Erhaltung des kulturellen Erbes - Leitfaden für die
directrices pour la conception de vitrines destinées à Konstruktion von Schauvitrinen zur Ausstellung und
exposer et préserver des biens culturels - Partie 2 : Erhaltung von Objekten - Teil 2: Technische Aspekte
Aspects techniques
This European Standard was approved by CEN on 21 April 2025.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15999-2:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols and abbreviated terms . 7
5 Specification of properties of a showcase . 7
5.1 Environmental factors . 7
5.1.1 General. 7
5.1.2 Airtightness and air exchange rate . 7
5.1.3 Air exchange rate measurements . 10
5.1.4 Protection against adverse climate . 11
5.1.5 Protection against pollution . 15
5.1.6 Protection against UV radiation . 15
5.2 Security and safety . 16
5.2.1 General. 16
5.2.2 Resistance against theft . 16
5.2.3 Electronic security . 16
5.2.4 Structural stability . 16
5.2.5 Fire resistance . 17
5.2.6 Resistance against splashing water . 17
5.3 Showcase relocations . 18
5.3.1 General. 18
5.3.2 Disassembly of showcase . 18
5.3.3 Transport of showcase . 18
5.4 Marking . 18
Annex A (informative) Assessment procedure for showcases from non-serial production . 19
Annex B (normative) Test method for certified safety showcases . 21
Annex C (informative) Physics of showcase air exchange . 27
Annex D (informative) Leak detection . 31
Annex E (informative) Example of air exchange rate measurement procedure by tracer gas
decay . 33
Annex F (informative) Example of air exchange rate measurement procedure by constant
air pressure difference . 36
Annex G (informative) Protection against pollution . 39
Annex H (informative) Emission- and impact-testing of showcase materials . 41
Annex I (informative) Examples for the calculated approximation of the hygrometric half-
time . 42
Annex J (informative) Numerically calculating hygrometric half-time from internal and
environmental relative humidity data . 46
Bibliography . 47
European foreword
This document (EN 15999-2:2025) has been prepared by Technical Committee CEN/TC 346
“Conservation of cultural heritage”, the secretariat of which is held by UNI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2025, and conflicting national standards
shall be withdrawn at the latest by December 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
EN 15999 consists of the following parts, under the general title “Conservation of cultural heritage —
Guidelines for design of showcases for exhibition and preservation of objects”:
— Part 1: General requirements
— Part 2: Technical aspects
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Introduction
A key objective of a showcase is to display objects of cultural heritage while acceptably reducing their
conservation risks. Conservation risks include total loss, physical damage, chemical and biological
deterioration (e.g. by accidents, theft, vandalism, natural disasters, humidity, temperature, dust,
pollutants, light, pests).
This document addresses stakeholders who are engaged in projects that involve showcases and who
are expected to understand the properties of a showcase, such as end-users, designers, manufacturers,
and contracting authorities who are in charge of the cultural institutions.
The proposed categories and classifying of technical aspects of the showcases for conservation, safety
and security, use and management of the showcase should facilitate the dialogue between the
stakeholder and can be used in the procurement phase or in the operating phase; e.g. to define
showcase properties for objects on loan.
While recognizing that aesthetics of showcases are very important, the present document emphasizes
functional design of the showcase, the practical needs of the user and the requirements of the objects
for better preservation.
1 Scope
This document classifies properties of passive showcases of cultural heritage objects for better
preservation. It applies to most uses of the showcase: showcases for so called permanent or temporary
exhibitions, historical or modular showcases, showcases in uncontrolled ambient environment, etc. It
specifies how the performance of the showcase for the safe and secure display ⁠- as derived from needs
identified during the risk assessment approach described in EN 15999-1:2025 - can be technically
assessed by using classified properties.
Aspects of active showcases (those using electricity to directly condition their microclimates) and
anoxic showcases (those containing inert atmospheres instead of air) are mentioned in this document,
but their properties are not defined, nor classified.
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 410, Glass in building — Determination of luminous and solar characteristics of glazing
EN 1023-3, Office furniture — Screens — Part 3: Test methods
EN 1630:2021, Pedestrian doorsets, windows, curtain walling, grilles and shutters — Burglar
resistance — Test method for the determination of resistance to manual burglary attempts
EN 15898:2019, Conservation of cultural heritage — Main general terms and definitions
EN 50131 (all parts), Alarm systems — Intrusion and hold-up systems
EN 60529, Degrees of protection provided by enclosures (IP Code)
EN ISO/IEC 17025:2017, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025:2017)
EN IEC 60332-1-2, Tests on electric and optical fibre cables under fire conditions — Part 1-2: Test for
vertical flame propagation for a single insulated wire or cable — Procedure for 1 kW pre-mixed flame
(IEC 60332-1-2)
EN IEC 60332-3-24, Tests on electric and optical fibre cables under fire conditions — Part 3-24: Test for
vertical flame spread of vertically-mounted bunched wires or cables — Category C (IEC 60332-3-24)
ISO 20653:2023, Road vehicles — Degrees of protection (IP code) — Protection of electrical equipment
against foreign objects, water and access
ISO 2
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