Odor Control >> Remove Smoke Odor From Electronics

One of these rooms (the museum boardroom) was used to store kits of soot cleanup clothing and cleaning materials and supplies and was also used as a staff room and change room. The second and third rooms were designated to receive the first of the salvaged displays and artifacts that would be removed from storage Remove Smoke Odor From Electronics and exhibit areas. 

In most cases, this salvage included direct application of a vacuum cleaner nozzle to remove soot before the objects were handled. These displays  Remove Smoke Odor From Electronics and specimens were moved back into place after the building cleaners and the building trades had completed cleaning of the rooms and galleries. Since conservation cleaning was undertaken in the building while it was being cleaned and restored, careful attention was required to protect uncleaned artifacts and displays. 

Before demolition and building cleanup, artifacts and displays were protected with draping of polyethylene film and by temporary plywood barriers. The protective draping was replaced as each area was cleaned at the end of each day to minimize soot Remove Smoke Odor From Electronics and construction products from the air landing on the cleaned surfaces.

The museum recovery effort required careful organization. The work was carried out by a crew composed of the two staff conservators, other staff members as they were available (one permanent assistant was assigned from the exhibit staff), Remove Smoke Odor From Electronics four technical staff (hired three months after the fire), and several volunteers. 

They worked in many locations throughout the museum and in a warehouse. A master binder with test results was stored in the lobby, and short, written procedures were posted to aid technicians Remove Smoke Odor From Electronics and volunteers. Conservators made concise notes on the materials, methods, and time that were taken for each object or area being recovered and for each refurbishment project and kept a daily log of overall recovery activities that were taking place. 

Volunteers logged their hours and duties on a sign-in sheet in the lobby. The conservators came to rely on a portable chart noting what objects and areas had been cleaned, Remove Smoke Odor From Electronics or partially cleaned, at the end of each day, since the work often had to be abandoned to make way for commercial cleaners or construction workers and then resumed some days later.

Fire cleanup gear was kept in the staff meeting, changing room. Table 1 lists the basic supplies that were used by conservators during the fire recovery. Requisite fire cleanup clothing for the commercial cleaners Remove Smoke Odor From Electronics and for museum workers was white disposable coveralls. 

Although an air analysis performed the third day following the fire revealed the presence of no toxic substances, some cleaners chose to wear solvent vapor masks in the early part of the recovery, but later only particulate masks were used. It was necessary to wear old shoes and clothing, since after only one day they would become blackened Remove Smoke Odor From Electronics and take on a bitter soot smell that could not easily be removed. 

Cleaning supplies and equipment were kept in this room and in other small locked closets as closets were cleaned and readied by the commercial cleaners. Smaller quantities of supplies were kept in plastic carry kits and on carts so that they could be used in various parts of the museum.The museum conservators began to conduct cleaning tests on the fourth day following the fire, using portable lights to compensate for the lack of lighting and a kit consisting of cleaning tools, prepared solutions, Remove Smoke Odor From Electronics and dry surface cleaners. 

They also carried with them a chart to document test results and estimate the time that would be required for each area.The extent of the spread of the soot was astonishing. Soot was everywhere, on horizontal surfaces as well as on ceilings and walls. It had penetrated every hairline opening into display cases and Remove Smoke Odor From Electronics inside drawers and cabinets. 

On some surfaces the soot had deposited evenly with an almost undetectable pigmentation, making an assessment of the damage even more complicated. In these instances, the presence of the thinner layers of soot could only be detected using a finger, Remove Smoke Odor From Electronics a wad of Groom/Stick, or an absorbent cotton pad. Bird specimens, stored in closed cabinets far from the fire, often did not appear sooty, but, when they were removed, clean areas remained on the shelves. 

The sprinkling of soot on the shelves became a gray oily smear when a finger was dragged over the surface. The conservators decided to clean all artifacts and displays, Remove Smoke Odor From Electronics even those with very little detectable soot. The decision turned out to be a wise one since the cleaning led to a much brighter overall appearance, even when the soot was barely detectable on the surface.

Samples of soot from various parts of the museum were sent to the Canadian Conservation Institute for analysis (CCI 1990). Scientists analyzed the soot using Fourier transform infrared spectroscopy (FTIR) and found that all the samples had identical FTIR spectra. The soot was comprised primarily of carbon with some oily or tarry pyrolysis products from the polyester (fiberglass resin) and Remove Smoke Odor From Electronics some pyrolysis products from the polyurethane (insulation foam) absorbed onto the carbon. 

When a sample of soot was clamped between filter papers, no exudation from the soot was noted, but soot particles became entrapped in the fibers of the paper. Aqueous extracts of the soot were acidic between pH 4 and 4.5. Under the microscope, Remove Smoke Odor From Electronics the soot was seen to be in the form of different size agglomerations. 

These aggregates had been segregated due to flotation effects, Remove Smoke Odor From Electronics finer particles being located farther from the fire and inside museum cases. Organic solvents (e.g., hexane and acetone) were found to extract from the soot yellow oily components containing esters, aromatic benzene rings (and perhaps polynuclear aromatics), and long-chain alkyl groups. 

The soot was easily wetted by these solvents and dispersed well but settled quickly. Water did not wet the soot and extracted nothing. Soot analysis carried out by CCI indicated that mechanical and dry methods promised the best cleaning results and Remove Smoke Odor From Electronics that surfactants would be required if aqueous solvents were used. Organic solvents, which would extract colored products, were to be avoided if possible. Practical on-site cleaning tests by RSM conservators confirmed these findings.

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