DOI issue:
Artykuły / Articles
DOI article:Czop, Janusz: The travels of the lady - the lady travels
DOI Page / Citation link:https://doi.org/10.11588/diglit.47327#0201
TheTravels ofThe Lady - The LadyTravels
199
There are comprehensive studies on determining optimal conditions for exhibiting
(or transporting) works of art48,49,50151 which take into account their structure. Nev-
ertheless, according to the current recommendations it seems that the most suitable
are the conditions to which the work has become acclimatised for at least a few years,
excluding some extreme episodes, i.e. the first and last seven percentiles in the graph
of RH and T.52
Taking into account both those recommendations and the analyses of long-term
historical data of microclimate in which the Lady was kept, it was concluded that
the optimal conditions of exposition, so also during transport, are the following: tem-
peraturę stabilized at a level of 18-21°C with 24-hour fluctuations not larger than 2°C
and relative humidity stabilized at 45-55% with 24-hour fluctuations not greater than
8%. The transporting case should be acclimatised beforehand to the given conditions
and then after delivering it to the exposition/packing site it should be acclimatised to
the actual conditions for at least 24 hours.
Realizing that the time of transport of the Lady (without acclimatisation) could
take from a few to over ten hours, and during this time the outside conditions could
periodically be adverse, it was demanded that the transporting case should have
strong buffering properties inside. Because using electromechanical Systems to con-
trol the microclimate inside the case could cause other risks, the microclimate changes
should be suppressed only in a passive way. It means that only when the case becomes
acclimatised to one type of external conditions (initial RH} T^ it can be subjected
to the effect of the other ones (finał RH, T,). The actual parameters (RH and T) in-
side the case will fluently change their values (from RHj to RH, and from T} to T2).
The speed of these changes will be:
■ the faster, the morę the initial and finał conditions differ from each other;
■ the slower, the better the used materials and the way of constructing the case
insulate thermally and buffer the humidity inside it.
48 G. Thomson, The Museum Environment, London-Boston 1978 (first edition), 1986 (second edition).
49 J. Ashley-Smith, N. Umney, D. Ford, Let’s be honest - realistic emironmental parameters for loaned
objects, [in:] Preventive Conservation..., pp. 28-31.
50 S. Michalski, The Ideał Climate, Risk Management, the ASHRAE Chapter, Proofed Fluctuations and
Toward a Fuli Risk Analysis Model, [in:] Contribution to The Experts’ Roundtable on Sustainable Climate
Management Strategies in Tenerife, Spain, Los Angeles 2007.
51 L. Bratasz et al., Allowable Microclimatic Yariations for Painted Wood: Numerical Modelling and Direct
Tracing of the Fatigue Damage, [in:] Preprints, ICOM-CC 16łl'1 Triennial Conference, Lisbon, Portugal, 19-23
September 2011, Almada 2011, pp. 1-7.
52 EN 15757: Conservation of cultural property - Specifications for temperaturo and relative humidity
to limit climate-induced mechanical damage in organie hygroscopic materials, in 2011 it got the status of
the Polish Norm, and sińce 2012 it is accessible in the Polish version: PN-EN 15 757:2012 Konserwacja
dóbr kultury - Wymagania dotyczące temperatury i wilgotności względnej w organiczaniu mechanicznych
uszkodzeń organicznych materiałów higroskopijnych powodowanych oddziaływaniem klimatu.
199
There are comprehensive studies on determining optimal conditions for exhibiting
(or transporting) works of art48,49,50151 which take into account their structure. Nev-
ertheless, according to the current recommendations it seems that the most suitable
are the conditions to which the work has become acclimatised for at least a few years,
excluding some extreme episodes, i.e. the first and last seven percentiles in the graph
of RH and T.52
Taking into account both those recommendations and the analyses of long-term
historical data of microclimate in which the Lady was kept, it was concluded that
the optimal conditions of exposition, so also during transport, are the following: tem-
peraturę stabilized at a level of 18-21°C with 24-hour fluctuations not larger than 2°C
and relative humidity stabilized at 45-55% with 24-hour fluctuations not greater than
8%. The transporting case should be acclimatised beforehand to the given conditions
and then after delivering it to the exposition/packing site it should be acclimatised to
the actual conditions for at least 24 hours.
Realizing that the time of transport of the Lady (without acclimatisation) could
take from a few to over ten hours, and during this time the outside conditions could
periodically be adverse, it was demanded that the transporting case should have
strong buffering properties inside. Because using electromechanical Systems to con-
trol the microclimate inside the case could cause other risks, the microclimate changes
should be suppressed only in a passive way. It means that only when the case becomes
acclimatised to one type of external conditions (initial RH} T^ it can be subjected
to the effect of the other ones (finał RH, T,). The actual parameters (RH and T) in-
side the case will fluently change their values (from RHj to RH, and from T} to T2).
The speed of these changes will be:
■ the faster, the morę the initial and finał conditions differ from each other;
■ the slower, the better the used materials and the way of constructing the case
insulate thermally and buffer the humidity inside it.
48 G. Thomson, The Museum Environment, London-Boston 1978 (first edition), 1986 (second edition).
49 J. Ashley-Smith, N. Umney, D. Ford, Let’s be honest - realistic emironmental parameters for loaned
objects, [in:] Preventive Conservation..., pp. 28-31.
50 S. Michalski, The Ideał Climate, Risk Management, the ASHRAE Chapter, Proofed Fluctuations and
Toward a Fuli Risk Analysis Model, [in:] Contribution to The Experts’ Roundtable on Sustainable Climate
Management Strategies in Tenerife, Spain, Los Angeles 2007.
51 L. Bratasz et al., Allowable Microclimatic Yariations for Painted Wood: Numerical Modelling and Direct
Tracing of the Fatigue Damage, [in:] Preprints, ICOM-CC 16łl'1 Triennial Conference, Lisbon, Portugal, 19-23
September 2011, Almada 2011, pp. 1-7.
52 EN 15757: Conservation of cultural property - Specifications for temperaturo and relative humidity
to limit climate-induced mechanical damage in organie hygroscopic materials, in 2011 it got the status of
the Polish Norm, and sińce 2012 it is accessible in the Polish version: PN-EN 15 757:2012 Konserwacja
dóbr kultury - Wymagania dotyczące temperatury i wilgotności względnej w organiczaniu mechanicznych
uszkodzeń organicznych materiałów higroskopijnych powodowanych oddziaływaniem klimatu.