OFFICIAL Hi All,
Thank you to everyone for their responses. It has been very helpful. We are particularly interested to know more details on the extra costs associated with the design, construction and operation of a freezer which operates at -30°C & -40°C, compared to a freezer operating at just below -20°C. Did anyone in a similar situation, obtain separate costings/quotes for freezers constructed at different set-points to help them evaluate the cost/benefits of the two designs? If yes, was there a clear relationship between a temperature decreases, and % of extra costs? Many thanks. Stuart Stuart Fuller Preventive Conservator Artlab Australia Department of the Premier and Cabinet T +61 (8) 8207 7528 | F +61 (8) 8207 7529 E [email protected]<mailto:[email protected]> | W artlabaustralia.com.au<http://www.artlabaustralia.com.au/> 70 Kintore Avenue, ADELAIDE SA 5000 [cid:[email protected]]<http://www.artlabaustralia.com.au/> [cid:[email protected]]<https://www.sa.gov.au/> [cid:[email protected],cid:[email protected],cid:[email protected],cid:[email protected]] The Department of the Premier and Cabinet acknowledges and respects Aboriginal people as the state's first people and nations, and recognises Aboriginal people as traditional owners and occupants of South Australian land and waters Information contained in this email message may be confidential and may also be the subject of legal professional privilege or public interest immunity. If you are not the intended recipient, any use, disclosure or copying of this document is unauthorised. From: 'Fusco, Maria' via MuseumPests <[email protected]> Sent: Thursday, 15 April 2021 10:07 PM To: [email protected] Subject: Re: [PestList] Re: Benefits of Freezers for Pest Treatments which operate at around -30C or -40C. Hi Stuart, We found the work of Tom Strang to be very helpful in guiding us on decision making. I'm attaching a more recent publication of his - figures 1A, 2B and 7 guided us a lot in balancing variables of temperature and object thickness in determining freeze efficacy. We now have walk in and walk through freezers which operate at -33C which has meant for us less bottleneck as objects can be treated in less time, though in our former facility operated chest freezers which ran at higher temps, which basically just meant treatments took longer but were still effective. We found insisting on a freezer design at a lower operating temperature to be worth it for our situation, but if you are not freezing at huge volumes and often, longer runs may not matter so much. Good luck, Maria On Thu, Apr 15, 2021 at 7:36 AM 'bugman22' via MuseumPests <[email protected]<mailto:[email protected]>> wrote: Adie - Individuals who use freezers in U.S. museums for disinfestation find -20 degrees F., not C. is plenty for most pests you'd encounter in a museum setting. Tom Parker -----Original Message----- From: 'Adrian Doyle' via MuseumPests <[email protected]<mailto:[email protected]>> To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Thu, Apr 15, 2021 6:58 am Subject: [PestList] Re: Benefits of Freezers for Pest Treatments which operate at around -30C or -40C. Dear all we have a stand alone computer controlled walk in freeze which is -35c and doubles up as a controlled humidity heating chamber is this is something you would like details of the Sofware has been programmed with t4 pre programme settings and there are bespoke settings for testing etc Adie British Museum IPM Manager London UK Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> on behalf of Fuller, Stuart (DPC-ARTS) <[email protected]<mailto:[email protected]>> Sent: Thursday, April 15, 2021 3:12:26 AM To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Subject: [PestList] Benefits of Freezers for Pest Treatments which operate at around -30C or -40C. OFFICIAL Hi All, Does anyone have any experience with large scale walk-in Freezers running at around -30°C to -40°C for pest treatments? We are curious to know if the benefits of shorter treatment times, outweighs potential WHS issues, and costs the associated with their design, construction, and operation. It would be great to hear from you, as we are trying to determine if there is enough benefit for us to specify temperatures of below -20C for the construction of a newly built large scale walk-in freezer. Many thanks, Stuart Stuart Fuller Preventive Conservator Artlab Australia Department of the Premier and Cabinet T +61 (8) 8207 7528 | F +61 (8) 8207 7529 E [email protected]<mailto:[email protected]> | W artlabaustralia.com.au<http://www.artlabaustralia.com.au/> 70 Kintore Avenue, ADELAIDE SA 5000 << RTF: Rich object >> << RTF: Rich object >> << RTF: Rich object >> << RTF: Rich object >> << RTF: Rich object >> << RTF: Rich object >> The Department of the Premier and Cabinet acknowledges and respects Aboriginal people as the state's first people and nations, and recognises Aboriginal people as traditional owners and occupants of South Australian land and waters Information contained in this email message may be confidential and may also be the subject of legal professional privilege or public interest immunity. If you are not the intended recipient, any use, disclosure or copying of this document is unauthorised. -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/ME2PR01MB56194BACF0FDC6D627FF448CBD4D9%40ME2PR01MB5619.ausprd01.prod.outlook.com<https://groups.google.com/d/msgid/pestlist/ME2PR01MB56194BACF0FDC6D627FF448CBD4D9%40ME2PR01MB5619.ausprd01.prod.outlook.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/PR1PR02MB474650E98C89DE705203F716DD4D9%40PR1PR02MB4746.eurprd02.prod.outlook.com<https://groups.google.com/d/msgid/pestlist/PR1PR02MB474650E98C89DE705203F716DD4D9%40PR1PR02MB4746.eurprd02.prod.outlook.com?utm_medium=email&utm_source=footer> . -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/258752346.2432051.1618486613639%40mail.yahoo.com<https://groups.google.com/d/msgid/pestlist/258752346.2432051.1618486613639%40mail.yahoo.com?utm_medium=email&utm_source=footer>. -- [https://lh5.googleusercontent.com/l7BAMaCQMlYhTGYKLYd831mpCZDTVOaBeHRnH0UHH3iMfZpEUeOgp0qGWghul4coVcY67r7hsFeWvUsljUkj-rVUY6KybrlEo_Lcj6-k6ub7OOQH27ABO3AS3s6KEt6bmVoCOPrr]<https://museum.gwu.edu/> Maria Fusco Chief Conservator/Margaret Wing Dodge Chair in Conservation The George Washington University Museum and The Textile Museum 701 21st St. NW * Washington, DC 20052 Office: 571.553.0278 [email protected]<mailto:[email protected]> * museum.gwu.edu<https://museum.gwu.edu/> She/Her/Hers [https://lh5.googleusercontent.com/n1aV6vun8CRALx0LUpw1mHPEOIsMOhHiv7d4m6xT3xGM_SwVzRPO_nLdXdpTAJdoG6R3j504c5CYcVLcELAxAjf3v6M8g-w09zAIQPUKBGTEpQE69-zdKEAl5OvIdQXMPVaQpXY2]<https://www.facebook.com/TextileMuseum>[https://lh4.googleusercontent.com/2veULOJ27yYcThLs9xnRO4Why6DUIhuthQNRrRsAaiLyR5bFgGgNTi55icZ3rlR2nnbmrwFyW8msvJK2Ovn-w9fMosQBdqEVHRA3n2mnhrG7X9hhfUCWsXKYD0wl4davkdth4fn8]<https://www.instagram.com/gwmuseum/>[https://lh6.googleusercontent.com/oIURN-gUnxdoxCSkPF_jVXdSR5JmlN-n3_FGX___-j2b4MV2xQhea3BZHUCQ-A3bWO6jCV6IZ21yWuIKlvBkEoJ3D6P_08MTQw4Azlpd8y0l3UY80F81NqE8iUznpxmpg1_5LCWu]<https://twitter.com/GWTextileMuseum> Browse our care of collections content including demo videos at museum.gwu.edu/textile-care-display<https://museum.gwu.edu/textile-care-display> -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. 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