FprEN 15999-2

SLOVENSKI STANDARD
01-april-2023
Ohranjanje kulturne dediščine - Smernice za načrtovanje vitrin za razstavljanje in
hranjenje 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: prEN 15999-2
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.

DRAFT
EUROPEAN STANDARD
prEN 15999-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2023
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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 346.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the 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.
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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15999-2:2023 E
worldwide for CEN national Members.

prEN 15999-2:2023 (E)
Contents . Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviated terms . 8
5 Specification of properties of a showcase . 8
5.1 Environmental factors . 8
5.1.1 Airtightness (3.1) and air exchange rate . 8
5.1.2 Air exchange rate measurements . 11
5.1.3 Protection against adverse climate . 12
5.1.4 Protection against pollution . 16
5.1.5 Protection against UV radiation . 17
5.2 Security and safety . 17
5.2.1 General . 17
5.2.2 Resistance against theft . 17
5.2.3 Electronic security . 18
5.2.4 Structural stability . 18
5.2.5 Fire resistance . 18
5.2.6 Resistance against splashing water . 19
5.3 Showcase relocations . 19
5.3.1 General . 19
5.3.2 Disassembly of showcase . 20
5.3.3 Transport of showcase . 20
5.4 Marking . 20
Annex A (informative) Assessment procedure for showcases from non-serial production . 21
Annex B (normative) Test method for certified safety showcases . 24
Annex C (informative) Physics of showcase air exchange . 31
Annex D (informative) Leak detection . 36
Annex E (informative) Example of air exchange rate measurement procedure by tracer gas decay38
Annex F (informative) Example of air exchange rate measurement procedure by constant air
pressure difference . 40
Annex G (informative) Protection against pollution . 43
Annex H (informative) Emission- and impact-testing of showcase materials . 46
Annex I (informative) Examples for the calculated approximation of the hygrometric half-time . 47
prEN 15999-2:2023 (E)
Annex J (informative) Numerically calculating hygrometric half-time from internal and
environmental relative humidity (3.7) data . 51
Bibliography . 52

prEN 15999-2:2023 (E)
European foreword
This document (prEN 15999-2:2023) has been prepared by Technical Committee CEN/TC 346
“Conservation of cultural heritage”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
EN 15999 consists of the following parts, under the general title “Conservation of cultural heritage –
Guidelines for showcases for exhibition and preservation of objects”:
— Part 1: General requirements,
— Part 2: Technical aspects.
prEN 15999-2:2023 (E)
Introduction
The main purpose of a showcase for cultural heritage objects on exhibition is to reduce the risks of
total loss, physical damage, chemical and biological deterioration (e.g. by accidents, theft, vandalism,
natural disasters, humidity, temperature, dust, pollutants, light, pests). A showcase adapted for its
tasks is expected to have properties which have been selected and specified with regard to its specific
use, requirements, value of object(s), and (projected) exhibition environment.
This document specifies how the performance of the showcase ⁠— as derived from needs identified
during the risk assessment approach described in prEN 15999-1⁠— can be technically specified by
using classified properties. These classes characterize, determine or measure the performance of the
showcase. The specification of the properties of a showcase can be used in the procurement phase or
in the operating phase; e.g. to define showcase properties for objects on loan.
prEN 15999-2 is for stakeholders who are expected to understand the properties of a showcase,
including end-users (such as collection managers, conservators, curators, registrars, installers,
technical agents), designers (architects, persons in charge of scenography or museography),
manufacturers, and contracting authorities who are in charge of the cultural institutions.
This document should facilitate both dialogue and collaboration between stakeholders who are
engaged in projects which involve showcases. It provides technical information about conservation,
safety and security, use and management of the showcase.
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.
prEN 15999-2:2023 (E)
1 Scope
This document defines and classifies properties of passive showcases for the safe and secure display
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. 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 1023-3:2000, Office furniture - Screens - Part 3: Test methods
EN 15898:2019, Conservation of cultural heritage - Main general terms and definitions
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 410, Glass in building - Determination of luminous and solar characteristics of glazing
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 60332-1-2:2004, 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 60332-1-2:2004)
EN IEC 60332-3-24:2018, 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 60332-3-24:2018)
ISO 20653:2013, Road vehicles — Degrees of protection (IP code) — Protection of electrical equipment
against foreign objects, water and access
ISO 21348:2007, Space environment (natural and artificial) — Process for determining solar
irradiances
prEN 15999-1: Conservation of cultural heritage – Guidelines for design of showcases for exhibition and
preservation of objects – Par
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