JPH01240857A - Diagnosis of adhesion of fine fibrous material layer such as asbestos on wall surface - Google Patents

Abstract

PURPOSE:To diagnose an adhesion state of an asbestos fiber layer accurately and objectively, by checking it by several types of examination methods. CONSTITUTION:First, a document pertaining to a building as object is studied to check for the presence of a fine fibrous substance layer 12 of asbestos or the like adhering to an internal wall surface 11. Then, the pattern of presence such as the number of the layers present, the range thereof is examined. The asbestos fiber layer 12 is observed visually. The examination is performed using an infrared remote sensing device 21 and an optical fiber scope device 31 is used to observe the surface and inside of the asbestos fiber layer 12. In addition, the identification of type and the determination of a crystal contained in an asbestos fiber are performed by an X-ray diffraction. Based on the results of the checking and examination, a report is prepared on the results of survey.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to the prevention of asbestos on the internal walls of buildings.
, regarding a method for diagnosing the adhesion state of a fine fibrous material layer such as rock wool, more specifically, a method for diagnosing the adhesion state of a fine fibrous material layer such as rock wool; An asbestos fiber layer made by spraying fine asbestos fiber pieces together with adhesive mortar cement for the purpose of providing insulation, heat retention, noncombustibility, sound absorption, etc.

Alternatively, the present invention relates to a method for diagnosing the adhesion state of a rock wool fiber layer having a similar form.

[Conventional technology]

Generally, this kind of fine fibrous material as.

Asbestos fiber, which is a mineral natural fiber, and rock wool, which is an artificial mineral fiber, etc. In order to avoid this problem, I will discuss asbestos fiber as a representative example.) In the 1950s, new building materials suitable for various uses were not available as interior materials for buildings, as they are today. , 4
In the 2000s, due to its own characteristics of heat insulation, non-combustibility, sound absorption, and bulkiness, buildings, etc., especially large and large-scale public buildings, It has been widely used for internal walls of buildings.

However, regarding the asbestos fiber layer attached to the internal wall surface of this building, the passage of 1 hour from the time of construction, that is,
Along with its aging, the surrounding environment to which it is exposed,
In addition, it has recently been found that this asbestos fiber layer has poor weather resistance due to the durability of mortar cement used as an adhesive, and the fibers exposed on the surface are Deterioration due to this aging.

As it becomes brittle, it may naturally peel off, fall off, and be dispersed into the indoor air, and in severe cases, for example,
Even if it is a small amount, it can be relatively easily released and blown up by air convection in the room or even slight vibrations applied to the wall, and it can become suspended in the air as fine dust. It has been confirmed that this floating dust is constantly
It has been pointed out that when breathing, there is a risk of causing undesirable damage to human health, for example, there is a risk of inducing harmful lung cancer.
As a countermeasure, this asbestos fiber layer will be forcibly peeled off from the wall surface, removed and disposed of, and replaced with other materials that have similar characteristics and are not likely to turn into dust over time. It was necessary to regenerate it with a surface coating material etc.

The carcinogenicity of asbestos dust is said to be due to the crystal structure of its fibers, and among them, crocitorite, called asbestos, is the most harmful, and acesite. Chrysotile is said to be a successor to this, but the size of this dust itself is only about 0.03 to 10 μm, making it completely impossible to see with the naked eye, and it also floats in the air. Unlike other harmful substances, even if you inhale it, no symptoms will appear immediately, and the incubation period is 20 to 30 years, which is extremely long. It can be said that it is a troublesome existence.

However, according to the applicant's investigation and measurement results, the extent of asbestos fiber dust mixed in the air is as follows:
In the case of a certain company's office (about 13 years after completion), the measured ratio of the asbestos suspended dust concentration on the removed surface and after removal of the asbestos fiber layer that had been attached was 11+3 fibers/J2 at the maximum.
: 0.62 fibers/fl=295 : I
It has also been confirmed that this can be achieved. Incidentally, the U.S. Environmental Protection Agency (EPA) and the Department of Labor's Occupational Safety and Protection Administration (O5IIA) state that ``There is no such thing as safe purchasing for asbestos dust floating in the air; [■1
However, there is a risk of causing health problems to the human body. He even takes the view that J.

On the other hand, from the above-mentioned standpoint, when forcibly stripping and removing the asbestos ya fiber layer attached to the wall surface, it is necessary to forcibly strip and remove the asbestos fiber layer that has already become fragile due to light age changes etc. Because the impact applied during the stripping process increases the amount of dust that is generated, which is scattered and suspended in the air in the room concerned, However, there is a risk that the worker performing the stripping and removal may inhale the dust generated by this person, or that it may adhere to his skin, causing similar health hazards. It is desirable to take effective measures to prevent this from escaping into the interior of the plant, causing secondary pollution. Similarly, appropriate measures should also be taken to prevent pollution when disposing of the removed waste. Needed.

[Problem to be solved by the invention]

Therefore, in order to fully understand and recognize the current state of the asbestos fiber layer attached to the internal walls of the target building, we first need to understand the amount of fine asbestos fiber particles in the indoor air under normal conditions. Knowing the airborne dust concentration, in other words:
It is said that it is important and urgent to accurately diagnose the current state of the asbestos fiber layer itself, but in the past, accurate diagnosis has not always been made. It is not possible to accurately determine the suspended state of fine asbestos particles in indoor rooms, and it is recognized that there is a need not only to take preventive measures but also to regenerate them.

The current situation is that there is a lack of refining, causing unnecessary misunderstandings and confusion among the owners of the buildings and other related parties.

Therefore, in view of these conventional problems, the purpose of this invention is to investigate and actually measure the adhesion state of fine fibrous material layers using asbestos, rock wool, etc. to the internal walls of buildings. Therefore, it is an object of the present invention to provide a method for diagnosing the state of adhesion of a layer of fine fibrous material such as asbestos to a wall surface of this kind, which enables diagnosis and treatment of this problem appropriately and objectively.

[Means to solve the problem]

In order to achieve the above object, the method for diagnosing the adhesion state of a layer of fine fibrous material such as asbestos on a wall surface according to the present invention is a method for diagnosing the adhesion state of a layer of fine fibrous material such as asbestos on a wall surface. We will double or triple consider the situation from different perspectives based on current research materials including those at the time of construction, and at the same time, we will thoroughly examine various conditions, condition detection equipment, chemical analysis equipment, etc. Make full use of the substantial state,
Thoroughly grasp the actual observation data and numerical data, judge them objectively and comprehensively, diagnose the adhesion state of the target fine fibrous material layer, and conduct a detailed investigation of the results. The actual measurement report was made to be presented to related parties such as the owner of the building.

That is, the present invention is a method for diagnosing the adhesion state of fine fibrous material layers such as asbestos and rock wool attached to the inner walls of buildings. The presence of the fine fibrous material layer was confirmed in the first culm by examining the presence of the fine fibrous material layer.
The location and mode of the sustaining material layer are as follows: 1) Related sentences in 1, 1F
Visually observe the current state of the fine fibrous material layer in step A of 67f, and investigate the outline of the fine fibrous material layer, which consists of the third L culm, through each of these steps. 9. At the first investigation site to diagnose the current state of the surface and internal parts of the fine fibrous material layer, the surface area of the fine fibrous material layer and the current state of the interior can be determined by applying a strong heat load to the relevant area from the outside using infrared remote sensing. Based on the temperature distribution, the state of the temperature distribution is indirectly detected, analyzed, displayed, and recorded, and the degree of deterioration can be detected using the indirect state data obtained in this way. In the fourth step, an optical fiber scope is used to image the fine fibrous material layer and the fine fibrous material dust floating in the air at a magnification that is high enough to visually recognize the fine fibrous material layer and the fine fibrous material dust. The perforated interior of the layer can be imaged microscopically and endoscopically, displayed and recorded; The fifth step is to detect and understand the degree of crystallization, and the sixth step is to identify and quantify the types of crystals contained in the fine fibrous material described in 1 above by X-ray diffraction. A second actual measurement diagnosis of the details of the fine fibrous material layer through each step, and an investigation to that effect on the fine fibrous material layer based on the results obtained in each step. Create a report on the actual measurement results and present it to the owner of the building and other relevant parties to determine the current surface level of the fine fibrous material layer.

This is a method for diagnosing the state of adhesion of a layer of fine fibrous material such as asbestos to a wall surface, which includes at least a 2I inspection that reports internal and substantial conditions and a report of actual measurement results.

[For production]

Therefore, in the case of the method for diagnosing the adhesion state of a layer of fine fibrous material such as asbestos to a wall surface according to the present invention, in the first step, by examining various related documents regarding the target building, It is possible to confirm the presence or absence of the attached fine ya maintenance material layer, and in the second step, by investigating the confirmed fine ya assemblage material layer, its location and form can also be determined. It can be confirmed in advance, and furthermore,
In the third step, the minute! By visually observing and investigating the current condition of the fibrous material layer, it is possible to grasp the basic outline of this fine fibrous material layer in minutes, and the condition of the parentheses can be used as the first investigation diagnosis to determine whether the owner or It is relatively easy to reach out to those involved.

Subsequently, in the fourth step, infrared remote sensing is used to determine the current state of the surface and internal parts of the fine fibrous material layer based on the heat load forcibly applied to the relevant parts from the outside. Therefore, we indirectly detected the condition of Ifi outside the temperature range, analyzed it, displayed it, and recorded it, so we could use the indirect actual data obtained in this way to assess the degree of deterioration. In the fourth step, the microscopic IA fibrous material layer and the fine fibrous material dust floating in the air can be visually recognized using a fiber optic scope. Take an image,
At the same time, the perforated interior of the fine fibrous material layer was imaged microscopically and endoscopically, and this was displayed and recorded. The degree of deterioration and the degree of floating can be detected and understood using actual data, and in the sixth step, the crystals contained in the fine fibrous material are determined by X-ray diffraction. By identifying the type and measuring the quantity, harmful crystals can be detected in advance, countermeasures can be taken, and the overall actual condition of this fine fibrous material layer can be determined. As a secondary actual measurement diagnosis, it can be sufficiently appealed to related parties such as owners.

(Example) Hereinafter, an example of the method for diagnosing the adhesion state of a fine fibrous material layer such as asbestos on a wall surface according to the present invention will be described in detail with reference to Figures 1 to 6. .

FIG. 1 is a flowchart showing an overview of the process of diagnosing the adhesion state of an asbestos fiber layer to which the method of this embodiment is applied.

Next, the flow of the process of diagnosing the condition of the asbestos fiber layer shown in the embodiment method of FIG. 1 will now be described in detail for each step of the process.

In this example method, the adhesion state of the asbestos fiber layer attached to the internal wall surface of a building, etc. is first investigated based on the relevant documents at the present time, including the time of construction of the building. First investigation and diagnosis (based on actual condition observation materials and numerical data, etc.)
+00), and present a summary investigation report as necessary at this stage, followed by actual measurement observations made using various condition detection equipment and chemical analysis equipment that are currently available. A second actual measurement diagnosis (200) is conducted based on materials and numerical data, and the results are presented in the form of a detailed investigation and actual measurement report.

First, the first investigation and diagnosis (100) will be described.

“Location Confirmation Step (+01.)” In this step (+01), for the target building, the building confirmation confirmation letter (splint) at the time of construction, which is kept in the possession of the owner or other related parties, We carefully examined the various related documents that are currently available, such as completed construction drawings, management inspection manuals, etc. Confirm the presence or absence of asbestos fiber layers, including structural details,
If the location of this asbestos fiber layer is not confirmed, if necessary, proceed to the summary investigation report step (1) as described below.
Either create a summary survey report to that effect in step 05a), or conduct a survey to that effect in the final actual measurement results reporting step (206a), which will be described later.

Create a measurement result report and also check this asbestos! When the location of the a fiber layer is confirmed, the process moves to the next step of investigating the location state using a document (+02).

“Location condition investigation step (102)” In this step (+02), regarding the confirmed asbestos fiber layer, the number and range of locations, the condition of the location, and the information on the asbestos fiber layer are determined based on the related documents. We will investigate in detail the thickness and amount of other layers, the type of asbestos fiber used, the material of the adhesive used together with it, the binding method, etc., and prepare a summary investigation report. This will be used as material for the investigation and actual measurement report, and the next step will be to visually inspect the current situation (+03).

“Current condition investigation step (10:])” Next, in step (+113), the outline of the current condition of the actual target asbestos fiber layer is visually observed and investigated in detail, and the condition is ranked into the following three ranks. The results will be evaluated and used as materials for the summary survey report and, ultimately, the survey and actual measurement report. Namely.

Great E: At present, the surface is still in a healthy condition and no deterioration phenomenon is observed (+04-a).

Great ■: Some deterioration phenomena are observed in some places on the surface (initial stage of deterioration (+04-b)).

Grade (1): The surface has completely deteriorated, and peeling and peeling spots can be seen here and there (stage of progressing deterioration (104-c)).

It will be divided into various evaluation ranks to help determine countermeasures for each stage.

Therefore, at the time when the current situation was visually inspected, the second actual measurement diagnosis (200) was carried out directly.
or go through the summary investigation report step (+05) if necessary.

“Summary investigation report step (+05)” In this step (105), the step (101)
Summary investigation report, along with the case where there was no asbestos fiber layer in ′! F(105a) and (105b) are prepared and presented to related parties such as the owner of the building, and the current surface condition of the asbestos fiber layer is reported.

Next, the second actual 1jjl1 diagnosis (200'') will be described.

°゛Deterioration diagnosis step by infrared remote sensing (20+)'' In this step (201), as shown in Fig. 2, a thermal image receiving device (22) such as an infrared detection camera that receives an infrared thermal image, and a An infrared remote sensing device (2) consisting of a thermal image processing 2 display and recording device (23) for analyzing, displaying, and recording the thermal image obtained.
1), perform the following measurements.

In other words, regarding the asbestos fiber layer (12) to be measured attached to the internal wall surface (11) of the dyed building whose location was confirmed as described in 11. The heat load (24
) is set to 6, and a thermal image receiving device (22) such as an infrared detection camera indirectly receives and detects the state of temperature distribution in the corresponding area, and also records this as a thermal image. Processing 7 Display and recording device (23) performs measurement 1 analysis processing, displays the results on a CRT screen, etc., records them on a floppy disk, etc., and records the indirect condition observation data (temperature) obtained in this way. distribution information, image information, etc.)
.

Also, from numerical data, etc., the degree of deterioration should be carefully monitored19.
Detection 1 is ascertained and used as material for the °C1 investigation and actual measurement report, after which the process moves to the deterioration diagnosis step (202) using the primary optical fiber scope.

“Step for diagnosing deterioration using an optical fiber scope (202)” In this step (202), as shown in Figure 3, a collection of optical fibers placed in the objective section and a magnification function of about 10 to 400 times are installed on it. 1, the asbestos fiber layer (I2) of the object to be measured, from numerically imaging the surface to microscopically and endoscopically imaging the inside using a borescope. Video camera that can be used (32
) and the image of the asbestos fiber layer (12) captured by the video camera (32) is processed and displayed as desired;
And, using the optical fiber scope device (31) with the captured image processing 1 display and recording device (33), and the light source device (34) to record the light source to the video camera (32)! Then, perform the following measurements for each.

That is, - numerically, the asbestos fiber layer (1
2) or, if necessary, asbestos fiber dust (not shown) floating in the air with a video camera (3).
2), the image is taken at a magnification that is sufficiently visible, and depending on the state of the asbestos fiber layer (12), observation holes are formed in some of the required parts of the asbestos fiber layer (12). 4(a), (
b) Optical fiber detector (3) as shown in (c)
Insert 5a), (35b) and (35c),
The inside of the asbestos fiber layer (12) is imaged microscopically and endoscopically, and the object image captured by the video camera (32) is processed by the captured image processing 9 display and recording device (33). Display the results on a CRT screen, etc., and record them on a floppy disk, etc.
However, from the direct condition observation data obtained in this way (information on the actual condition of the surface and inside, information on the actual state of dust floating, image information, etc.), as well as numerical data, we can determine the degree of deterioration and Be careful about the degree of dust floating! Detection 1 in R
Understand this information and use it as material for surveys and actual measurement reports.

In addition, each optical fiber detector (11η)
35a), (:15b), and (35c), the detector (+5a) has a detector (35a) in front of one end face of the fiber.
5b) has a viewing angle on the side of the fiber end, and the detector (35c) has a viewing angle diagonally in front of one end face of the fiber, making it possible to observe in the corresponding direction.

After that, asbestos determination step using first-order X-ray diffraction (
203).

“Asbestos determination step by X-ray diffraction (203)” “This step (
203), regarding each asbestos fiber piece constituting the asbestos fiber layer (12) and each asbestos fiber piece that is scattered and liberated in the air in the room and remains suspended as dust. By analyzing each crystal component contained in this fiber using the X-ray diffraction phenomenon, we can identify the type of unknown crystal contained in the same asbestos fiber and measure the constant volume to understand it. Materials for surveys and actual measurement reports.

In other words, when looking at the individual crystals that make up a substance roughly and generally, the elements r are arranged periodically to form a regular lattice, and the distance between each atom is usually several It is known that the distance between each crystal is about the same as that of a human, and when X-rays with a wavelength equal to or shorter than the atomic spacing are incident on each of these crystals, the lattice of each crystal becomes a diffraction lattice. X-rays incident on each crystal are diffracted in a specific direction corresponding to each crystal,
The stiffness allows identification of the type of crystal and quantitative information to be obtained, and this phenomenon will be utilized in this step.

Figures 5 (a), (b), and (c) are examples of data samples of crystals contained in asbestos fibers subjected to X-ray diffraction in this manner, and (a) of the same figure shows data samples of crystals contained in asbestos fibers that have been subjected to X-ray diffraction. In the case, (b) is the case of amosite, and (C) is the case of crocitolite.

Next, the process moves to an asbestos determination step (204) using a screening test performed as necessary.

“Asbestos determination step by screening test (204)” In this step (204), the asbestos components of the sampled or collected test specimen whose content of asbestos (asbestos) is unknown are extracted and classified. The results will also be used as materials for the investigation and actual measurement report.

In other words, in this X, Mg (magnesium) and Fe (
By extracting (ionizing) iron, etc., the asbestos components can be removed relatively easily.

Figure 6 (a) shows each step of the Mg test on an unknown sample, and Figure 6 (b)
) are each step of the Fe test of unknown samples. First, in the Mg test of the Fusha process, glycerin adjustment (41-a
) → Filtering and washing with water (41-b) → Adjustment with phosphoric acid (yg
+2 separation) (41-c) → Adjustment with caustic soda (
alkalization) (41 to d), to obtain a dark brown color,
When the blue color is removed, the presence of white asbestos can be confirmed, and in the Fe test of the latter step, pickling (acetic acid and sulfuric acid) (42-a) → filtering and washing (42-b)
) → Adjustment with hydrofluoric acid (separation of Mg″?2) (4
When the color is reduced through each step of 2-c) and the red color is removed, it can be confirmed that yellow asbestos and blue asbestos are present.

Subsequently, the process moves to an asbestos monitoring step (205), which is performed as necessary.

“Asbestos Monitoring Step (205)” In this step (205), the state of scattering and floating of asbestos (asbestos) in the room where the asbestos fiber layer (12) is present, including the inside and outside of the building, is carried out. Environment Agency
In accordance with the Asbestos Monitoring Manual, etc.
Environmental measurements (indoors) and measurements by environmental measurers 9
The analysis was conducted based on the following criteria, and the results were similarly investigated.

This will be used as material for the actual measurement report.

Measurement location: Inside the building, around the outside, and inside the room.

Measurement period: Removal work surface (during removal work and after work).

Measuring method: a) Wind direction ~ Smoke tester (smoke cannon).

b) Wind speed ~ 8-line anemometer.

C) Temperature, humidity ~Assmann ventilation psychrometer.

d) Sampling filtration and collection ~ Collector (47mm membrane flap) filter).

C) Measurement - Confirm asbestos dust and measure using a phase contrast microscope.

Furthermore, the standards for asbestos (asbestos) concentration that are considered to be acceptable in a numerical environment are 1.
As of January 1988, although not specifically defined, some government offices use 2 fi as the standard for administrative guidance.
The standard is bers/cc.

Incidentally, the currently available control concentration of asbestos for one working environment is as shown below.

・Ministry of Labor Notification (1981, Ranbatsu No. 69) 2 fibe
rs/cc (2000 fibers/ff1).

・Specified Chemical Substance Hazard Prevention Regulations 5 fibers/cc ~ 5 μm or less] 2.

・Japan Society of Industrial Hygiene White asbestos 2 fibers/cc.

Blue asbestos 0.2 fibers/cc.

・ACGIII (American CNNffer)
ence of Govern-menLal In
industrial f(ygienics, Inc.
) T1. V-TWA = time weight a
verage con-centration.

(Time-weighted average concentration during regular working hours of 8 hours a day and 40 hours a week) Of asbestos.

Amosite 0.5 fibers/cc.

Chrysotile 2 fibers/cc.

Crocitolite 0.2 fibers/cc.

Others 2 Nbers/cc.

After passing through each of the above steps, the actual measurement result reporting step (206) is finally performed.

“Actual survey results reporting step (206)” In this step (206), as described above, step (+01)
If the asbestos fiber layer (12) is not present in the building, an investigation and measurement result report δ (206a) to that effect is prepared and presented to the relevant parties such as the owner of the building, and
When the asbestos fiber layer (I2) is present, the asbestos fiber layer (12) is
), draw a conclusion regarding future treatment, make a diagnosis, and create a survey and measurement results report (206b) to that effect.
Similarly, we will present the information to related parties such as the owner of the relevant building, and report on the current superficial, internal, and substantive conditions of the asbestos fiber layer.
In the future, the same asbestos fiber layer (12) will peel off.

It is enough to convince you that it needs to be removed.

〔Effect of the invention〕

As detailed above, when using the method for diagnosing the adhesion state of a layer of fine fibrous material such as asbestos to a wall surface according to the present invention,
In the first step, we examined various related documents that were currently available regarding the target building. It is possible to confirm even difficult structural details, and in the second step, the location and mode of the confirmed fine fibrous material layer are similarly investigated. Therefore, it is possible to confirm the location and mode of the confirmed fine fibrous material layer in advance.Furthermore, in the third step, the current state of the fine fibrous material layer is visually observed. In order to investigate this, it is possible to fully grasp the basic outline of this fine fibrous material layer, and this condition can be used as a primary investigation diagnosis to relatively easily inform related parties such as the owner.

Subsequently, in the fourth step, infrared remote sensing is used to determine the current state of the surface and internal parts of the fine fibrous material layer based on the heat load that is forcibly applied to the relevant parts from the outside. The state of the temperature distribution was indirectly detected, analyzed, displayed, and recorded, so that the indirect actual data obtained in this way could be used to determine the fine fibrous material. The degree of deterioration of the layer can be detected and understood, and in the fourth step, the surface part of the fine fibrous material layer and the dust of the fine fibrous material floating in the air are inspected using an optical fiber scope. The image is taken at a magnification that can be visually recognized, and at the same time, the perforated inside of the fine fibrous material layer is imaged microscopically and endoscopically, and this is displayed and recorded. Therefore, we will similarly detect and understand the degree of deterioration of this fine fibrous material layer and the degree of suspension of the fine fibrous material in the air using the direct actual data obtained in this way. In addition,
In the sixth step, X-ray diffraction is used to identify the type of crystals contained in the fine fibrous material and to measure the quantity), making it possible to detect harmful crystals in advance. For example, countermeasures can be taken in advance for normal conditions and during removal work, and the overall condition of this fine fibrous material layer can be used as a secondary measurement diagnosis to provide sufficient information to related parties such as owners. You can apply it to Arapeal.

After the first initial inspection and diagnosis, an overview of the fine fibrous material layer is provided, including cases where the location of the fine fibrous material layer was not confirmed in the first step, as necessary.
It is even more advantageous to present the summary investigation report in a long ↑, and in the third step, the current state of the visually observed fine fibrous material layer can be divided into a superficially healthy stage and a deteriorated stage. Since the diagnosis is divided into evaluation ranks of the initial stage and the stage where deterioration is progressing, it is possible to effectively recognize the current state of the product.

Furthermore, in the seventh step following the sixth step, for the test specimen sampled or collected from the fine fibrous material layer by the screening test,
By extracting and classifying the fine fibrous material components, the components themselves can be confirmed in advance and protective measures can be prepared in advance. In the eighth step, which follows the above step, asbestos monitoring is used to measure and analyze the floating state of fine fibrous substances, thereby renewing awareness of the dangerous situation and further improving the final In addition to reporting the results of surveys and actual measurements, S has begun to appeal for the removal of the fine fibrous material layer and its subsequent regeneration. It has excellent features.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the method for diagnosing the adhesion state of a layer of fine fibrous material such as asbestos on a wall surface according to the present invention.
Fig. 1 is a flow chart showing an overview of the process of diagnosing the adhesion state of an asbestos fiber layer to which the method of this embodiment is applied; Figure 4(a)
, (b) and (c) are explanatory diagrams showing aspects of deterioration diagnosis using an optical fiber scope in the same process, and cross-sectional configuration diagrams showing an outline of each individual optical fiber detector,
Figures 5 (a), (b), and (c) are graphs each showing an example of data samples of crystals contained in asbestos fibers subjected to X-ray diffraction in the same process, and Figure 6 (a).
, (b) is a flowchart showing each step of the Mg and Fe tests using the same unknown sample as above. (100)...First investigation diagnosis. (100...
Location confirmation step, (+02)...Location status investigation step, (+03)...Current status investigation step, (]0
4a)...Superficial sound stage, (104b)...
Initial stage of deterioration, (104c)...0 Stage in progress of deterioration, (105)...Summary investigation report step, (+0
5a), (105b) ----Summary investigation report. (200)...Second actual measurement diagnosis, (201)...
・Deterioration diagnosis step using infrared remote sensing,
(202)...Deterioration diagnosis step using an optical fiber scope, (203)...Asbestos determination step using X-ray diffraction, (204)...Asbestos determination step using screening test, (205)
...Asbestos monitoring step, (206)
...Actual measurement survey result reporting step, (206a),
(206b)...Investigation. Actual measurement result report. (11)... Internal wall surface of the building, (12)...
Diagnosis vs. asbestos fiber layer of Mongolia. (21) Infrared remote sensing device. (2
2)...Thermal image receiver (infrared detection camera, etc.)
, (23)...Thermal image processing 9 display, recording device, (2
4) ... Wisteria load applied from outside. (3I)...Optical fiber scope device, (32)
...Video camera capable of capturing enlarged images, (33)
Old - Captured image processing 9 Display, recording device, (34)...
Light source device, (35a), (35b), (35c
) = = Each optical fiber detector used in the borescope.

Claims (6)

[Claims] (1) A method for diagnosing the adhesion status of fine fibrous material layers such as asbestos and rock wool attached to the inner walls of buildings, etc., by examining related documents for the target building. A first step of confirming the presence or absence of the fine fibrous material layer, a second step of investigating the location, mode, etc. of the confirmed fine fibrous material layer using the related documents; The third step is to visually observe and investigate the current state of the layer.
The first investigation and diagnosis involves investigating and diagnosing the outline of the fine fibrous material layer through each of these steps, and the surface portion of the fine fibrous material layer and the current internal state are determined by infrared remote sensing. The state of the temperature distribution is indirectly detected based on the heat load that is forcibly applied to the relevant part from the outside, and this is analyzed, displayed, and recorded. indirect condition data etc.
The fourth step of detecting and understanding the degree of deterioration is to image the fine fibrous material layer and the dust of the fine fibrous material floating in the air at a magnification that allows visual recognition using an optical fiber scope, and The perforated interior of the same fine fibrous material layer is imaged microscopically and endoscopically, and this is displayed and recorded, and the degree of deterioration can be determined using direct condition data obtained in this way. , and a fifth step of detecting and understanding the degree of floating, and a sixth step of identifying the type of crystals contained in the fine fibrous material by X-ray diffraction and measuring the quantitative amount, A second actual measurement diagnosis that actually measures and diagnoses the details of the fine fibrous material layer through each of these steps,
Based on the results obtained in each of the above steps for the fine fibrous material layer, a report on the survey and actual measurement results is created and presented to the relevant parties such as the owner of the building, and the current A method of applying a layer of fine fibrous material such as asbestos to a wall surface, comprising at least a survey reporting the superficial, internal, and substantial conditions of the layer of fine fibrous material at a time, and reporting of actual measurement results. Adhesion state diagnosis method. (2) After performing the first investigation and diagnosis, report a summary investigation of the fine fibrous material layer, including cases where the location of the fine fibrous material layer was not confirmed in the first step, if necessary. 2. The method for diagnosing the state of adhesion of a layer of fine fibrous material such as asbestos to a wall surface according to claim 1, wherein the method is presented in the form of a book. (3) In the third step, the current state of the fine fibrous material layer visually observed is classified into a superficially healthy stage and an early stage of deterioration.
2. The method for diagnosing the state of adhesion of a layer of fine fibrous material such as asbestos on a wall surface according to claim 1, wherein the diagnosis is performed by dividing the evaluation rank into a stage in which deterioration is progressing. (4) Following the sixth step, the seventh step involves extracting and classifying the fine fibrous material components of the test specimen sampled or collected from the fine fibrous material layer through the screening test. 2. A method for diagnosing the state of adhesion of a layer of fine fibrous material such as asbestos to a wall surface as claimed in claim 1, characterized in that the step of: (5) Following the sixth step or the seventh step, an eighth step of measuring and analyzing the floating state of fine fibrous substances by asbestos monitoring is performed. Or the method for diagnosing the adhesion state of a fine fibrous material layer such as asbestos to a wall surface as described in 4. (6) Fine fibers such as asbestos on the wall surface according to claim 1, characterized in that, in addition to reporting the results of the investigation and actual measurements, it is emphasized that the fine fibrous material layer needs to be removed and its subsequent regeneration is necessary. A method for diagnosing the adhesion state of a sexual substance layer.