Backstage will apply polysulfide treatment to film produced in our studios or to film produced by other organizations.Ĥ. Although the formula is freely available, controlled testing and specialized equipment are required to formulate the raw materials of the polysulfide solution to the IPI formula.Ĭurrently, Backstage Library Works is the only organization producing SilverLock that is tested and certified by IPI. Some organizations increased inventory of IPI’s SilverLock, however, at some point these supplies will be exhausted. In 1997, IPI discontinued the production of SilverLock. The specific purpose behind the design of IPI SilverLock was to ensure the stability of preservation microfilm.ģ. Work was supported by grants from Office of Preservation, National Endowment for the Humanities (NEH) the National Historical Publications and Records Commission (NHPRC) and the New York State Library Preservation Grant Program as part of a general effort to preserve the informational content of the nation’s brittle books.
The formula for SilverLock was developed by the Image Permanence Institute (IPI) as a result of five years of federally funded research. SilverLock completely prevents red spots. The silver in a film emulsion can react in somewhat the same way, except that the deterioration typically appears in the form of spots (sometimes referred to as red spots). Metallic silver is very susceptible to oxidation - a fact you can appreciate if you have a silver table service that must periodically by cleaned of tarnish. It does this by converting most of the metallic silver that makes up the image to silver sulfide. SilverLock is a protective chemical bath that makes silver film resistant to the effects of atmospheric pollutants. Question: What is SilverLock? Will it prevent red spots? The scaffold was not constructed in accordance with Australian and New Zealand Standard 1576 in that braces were missing, guardrails were wired on, planks were missing and there was no access to the scaffold.This document was originally created by the Image Permanence Institute (IPI), modified by Backstage preservation services, and approved by IPI.ġ. The standard requires that any erection, alteration or dismantling of scaffolding from which a person could fall four or more metres be done by the holder of a certificate of competency.
The defendant did not hold a certificate of competency in relation to the scaffolding as required by the National Occupational Health and Safety Certification Standard for Users and Operators of Industrial Equipment (NOHSC: 1006 (1995)]. The fall distance from the working platform of the scaffolding to the ground was measured to be 5.57 metres. The scaffolding was erected on top of the undercroft garages of the units. The defendant admitted rearranging scaffolding to the front of units 1, 2 and 3.
The units were two storeys with undercroft garages. The defendant was the director of a company that was building six units in Hillarys and was responsible for the day to day construction operations at the site. Performed prescribed work, namely scaffolding where a person or object could fall more than four metres from the scaffolding, when he did not hold a certificate of competency that he was required by the National Occupational Health and Safety Certification Standard for Users and Operators of Industrial Equipment (NOHSC: 1006 (1995)] to hold to perform that work.
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