Smoke Damage >> DIY Removing Smoke Damage From Wood

In one set of tests, the vertical plates were placed with a fixed spacing of 2.5 mm. In these tests, the plates were biased with 5 Vdc, 50 Vdc, 500 Vdc and 1 Vac. The current flow between the dc-biased plates was monitored during exposure. The ac-biased plates were analyzed to measure DIY Removing Smoke Damage From Wood admittance from 500 kHz to 30 MHz. 

Video of these experiments was recorded to monitor the behavior of soot particles in electrical fields.In a different set of experiments [19], the plates spaced at distances from 3 mm to 25 mm subjected to a rising ac bias, DIY Removing Smoke Damage From Wood up to 4.2 kV. The voltage was allowed to rise until arcing occurred.Current and voltage behavior during arcing were measured.

It was found that higher voltages (50 V and 500 V) attracted smoke particles to the plates and DIY Removing Smoke Damage From Wood significantly increased conductance between the plates. The smoke particles were observed to accumulate between the two plates and create conductive bridges. As a result, conductance increased very quickly with smoke density but decreased much less quickly and leveled out at approximately 20 % of its peak value. 

Conductance only returned to near zero values when forced ventilation of the chamber disrupted the accumulated soot bridges.The interdigitated comb boards biased at 5 V, 50 V and 500 V were tested for conductance overtime DIY Removing Smoke Damage From Wood and total mass of smoke deposited. 

Inspection of the boards after exposure showed that soot preferentially deposited on the traces of the boards at higher voltages, DIY Removing Smoke Damage From Wood resulting in a less even distribution of soot on the 50 V and 500 V boards. Although distribution pattern varied with voltage, the total mass deposited depended only upon the total fuel load. 

Conductance increased sharply with the smoke level and DIY Removing Smoke Damage From Wood decreased as the smoke cleared. The conductance of the 5 V board recovered far less effectively than the 50 V and 500 V boards. It was suggested that this was due to the more even distribution of soot.2.2 Telecommunications Equipment Outside of the nuclear power industry, the overall cost of a fire may be more important than a temporary loss of functionality. 

While the short term failure of equipment has a cost in lost business, DIY Removing Smoke Damage From Wood the damage caused by non-thermal fire environments can easily total millions of dollars[3]. Thus, the cost of a fire event can be significantly decreased if components exposed to smoke can be recovered and returned to service, rather than being replaced. 

As such, DIY Removing Smoke Damage From Wood much of the research in this industry has focused on understanding and mitigating the forms of non thermal damage that can decrease the lifetime of equipment.2.2.1 Corrosion The most commonly identified and studied mechanism of non-thermal damage is corrosion caused by the chemical products of combustion. 

Starting in the late eighties, prompted by reports of extensive corrosion damage and accumulated corrosive products found in a number of separate telecommunications facilities during the 1970’s and 1980’s, researchers began to develop the theoretical and empirical basis for characterizing the release, transport DIY Removing Smoke Damage From Wood and impact of corrosive compounds from fires.

A significant part of this work was the development of a number of bench-scale laboratory experimental testing methods for determining the potential of the combustion products of a particular fuel to corrode metal (detailed in section 3.2). However, DIY Removing Smoke Damage From Wood these standards are of a very simplistic nature and do not necessarily provide immediate insight into the complex phenomena associated with real-world fire scenarios. 

In order to develop prevention and recovery procedures, DIY Removing Smoke Damage From Wood a number of intermediate and full scale test fires of a more realistic nature were required. The first steps that Tewarson and Chu [20] took in evaluating the non-thermal damage potential of cables used the Factory Mutual Research Corporation’s (FMRC) 50 kW-scale flammability apparatus to evaluate ignition and flame spread characteristics as well as yields of products. 

This device subjects a vertically oriented sample to radiant heating and a controlled flow of gas at the component sample. The composition of the effluent is analyzed to determine chemical composition, which is used to determine corrosive properties and DIY Removing Smoke Damage From Wood heat release rate. The separation of chemical product distributions and fire properties allows for a more detailed understanding of the factors that contribute to corrosive damage. 

Figure 3 shows the HCl yields(g/g) relative to HCl concentrations (g/m3) in the effluent stream for a selection of PVC cable insulation materials. The weak correlation between the two data sets is a result of the burning rate of the fuels and DIY Removing Smoke Damage From Wood the dynamic nature of this test method. The forced flow ensures a relatively constant mass flow of air, while the mass release rate of HCl depends on the burning rate of the material. 

Thus, materials rich in chlorine will produce relatively low concentrations in the gas phase if they burn slowly. Further, DIY Removing Smoke Damage From Wood the flame propagation rates are seen to play a key role in determining the amount of fuel that will become involved before intervention occurs in a fire event. Again, a chlorine rich material may prove to be less of a corrosion hazard than a material with only modest chlorine levels if it is less flammable. 

This illustrates the importance of considering the interaction of a complete range of physical behavior when determining the meaning of a parameter such as chlorine concentration.The prevalence of corrosive compounds in telecommunications fires is often a result of halogenated compounds used as solid fire retardants and DIY Removing Smoke Damage From Wood gaseous suppression agents.

When fires involving these compounds do occur, significant quantities of the hydrogen halides and halogen radicals may be released along with the other products of combustion. Therefore, DIY Removing Smoke Damage From Wood the use of these compounds to reduce the risk of a fire may carry with it the potential to increase the severity of non-thermal damage caused by any fire that does develop [24].

A commonly identified corrosive reaction is that of hydrogen chloride with zinc. [21,22] This has been observed in a number of fires, DIY Removing Smoke Damage From Wood because of the prevalence of galvanized (zinc coated)steel in HVAC systems as well as support structures in electronic equipment. The solid zinc chloride adheres well enough to the base metal that it poses little direct hazard to electronics.

However, the ZnCl2 is extremely hygroscopic, DIY Removing Smoke Damage From Wood being able to absorb water in relative humidity as low as 10 %. The ZnCl2 is very conductive and can easily flow or drip onto nearby electronics,causing circuit bridging.

About Radon

You want to take good care of your family. You try to eat healthy foods. You take your children to the doctor for regular checkups. You try your best to protect your family from accidents and illness. You want to live in a safe neighborhood and home. But did you know your home might have hidden Radon Mitigation About Radon  read more..

Health Effects Of Hurricane Katrina

Health Effects of Exposure to Water-Damaged New Orleans Homes Six Months After Hurricanes Katrina and RitaWe found significant positive associations between exposure to water-damaged homes and URS score (P< .05), LRS score (P= .01), Water Damage Health Effects Of Hurricane Katrina and overall symptom score (P< .01) in the mult  read more..

Tenant Trash Removal

BEFORE YOU RENT Before signing a lease agreement, prospective tenants should carefully read the lease and be sure they understand all of the requirements, provisions, rules, addendums, and laws that apply. If you have a question, ask the landlord and make sure you understand the answer, Tenant Move Out Cleanup Tenant Trash Removal and tha  read more..

How To Clean Smoke And Soot After A Fire

Ozone is a harmful air pollutant that is the main ingredient of ground-level smog. Breathing ozone can be harmful, especially for children, the elderly, and people with asthma, emphysema,bronchitis, or other respiratory diseases. Ozone irritates the eyes, nose, and throat, and Smoke Damage How To Clean Smoke And Soot After A Fire may tri  read more..

Vermiculite Insulation

Protect Your Family from Asbestos Abatement Vermiculite Insulation Asbestos-Contaminated Vermiculite insulation Insulation This page provides important information on how to protect yourself and your family i  read more..

Flood Prevention Ideas

The walls, floors, closets, shelves,

contents—every flooded part of

your house—should be thoroughly

washed and disinfected. Some projects, such as washing clothes, may

have to wait until all the utiliti  read more..

Cleaning Up Water In Carpet

Daily wear and tear means that materials, furniture and furnishings require periodic replacement.Following are Sustainable Strategies to consider as you replace MATERIALS, FURNITURE AND FURNISHINGS. Refer to the Share Section for a representative project Case Study to discover key practices, benefit  read more..

Remove Black Toxic Mold From The Attic

Although the level of personal protection suggested in these guidelines is based on the total surface area contaminated and the potential for remediator and/or occupant exposure, professional judgment should always play a part in remediation decisions. These remediation guidelines are based on the s  read more..

How To Keep Moisture Out Of Your Basement

TIPS FOR DRYING OUT A WATER-DAMAGED BUILDING F. Mitchener Wilds, Senior Restoration Specialist
 Once a building has been exposed to a large volume of water, either floodwater or rainwater, steps must be taken to dry the building out, assess damage, and Basement Drying How To Keep Moisture Out Of Your Basement plan for repairs a  read more..

WATER DAMAGE AND MOLD FROM FLOOD RESPONSE

WATER DAMAGE AND MOLD FROM FLOOD RESPONSE FLOOD RESPONSE - WATER DAMAGE AND MOLD HOW DO I PROPERLY CLEAN UP MY HOME IF IT HAS BEEN FLOODED OR HAS WATER DAMAGE? First, Water Damage WATER DAMAGE AND MOLD FROM FLOOD RESPONSE make sure electricity and natural gas or propane tanks are shut down. 

The Centers fo  read more..