DE4133434C2 - Process and measuring control station for central monitoring and control in the maintenance of negative pressure during the remediation measures from building parts - Google Patents

Description

The invention relates to a method and device for Monitoring, measuring, recording, controlling and reporting the pending at various points detected by sensors Pressures in the remediation of contaminated sites, e.g. B. weak and / or bound asbestos products from building parts in work areas isolated from the environment.

In recent years, many have been public and private Buildings on asbestos fiber concentration in the air under breath is looking for. If the concentration exceeds a fixed one Limit value, the building or the affected rooms must be refurbished. The work areas during the Occupancy and non-working time constant from the environment be kept isolated under negative pressure. Is in the future to expect increased renovation work.

The following procedure corresponds to the state of the art known:

The vacuum in the work area is measured and can be turned on abge certain places at different facilities  will read. The connection between measuring and control point always forms a hose line, the inaccuracies does not exclude in the measurement.

Independent adjustment and adjustment of the vacuum the often fluctuating outside air pressure is not known.

There are fluctuations in the vacuum conditions recognizable, they are reported, but not automatically Fixed. The generation of vacuum is dependent on manual. Unpredictable written pressure conditions are unavoidable.

A traceability of the vacuum conditions over a a longer period is not guaranteed. Especially at Non-occupancy of the job can be done automatically Reporting errors is not provided, improper Operating conditions occur and z. B. asbestos fibers in the Outside air.

In summary it can be said that the required Requirements are met individually, but a summarized,  automatic and unmanipulable monitoring, registration and reporting misconduct as well as a traceable Operations are missing.

In addition to the prior art described, there are still patents or publications that describe the method and the measurement Control station for central monitoring and control at the Maintaining negative pressure during the remediation measures Skim parts of the building briefly.

In the utility model G 89 14 790.1 a black chamber Lift lift system described that over several floors Personnel enter and leave the renovation room as well as the removal of the material to be disposed of from the Building outer wall permits. However, it does not include any Statement of how the vacuum takes into account the External pressure can be maintained and controlled.

In GB 2 202 952 A only a small part of the registered novelty addressed, namely the registration and Record of the existing negative pressure by a computer, not the automatic correction of the internal pressure in the event of changes  the external pressure. The device can only detect, not control. Automatically initiated ones are also not mentioned Activities.

The patent specification CH 664 224 A5 shows a pressure measuring and Control device that regulates two from an existing network pressure can provide adjustable pressures mechanically. Whether it is suitable for maintaining negative pressure is from the Patent specification not recognizable.

The publication "Remote measurement with Maihak string in concrete, earth und Stahlbau "from H. Maihak AG, Hamburg, from the year 1974 introduces a telemetry device that provides construction data from detects distant measuring points. It cannot be automatic Trigger measures to preserve the necessary data to lead.

Based on the aforementioned prior art, the Invention based on the task of a vacuum control create that manually independently, automatically all for Measures required to maintain negative pressure are understandable seizes and cannot be manipulated.

This task is accomplished by a method with the characteristics in claim 1 and by a device according to Claim 6 solved.  

The method and the measuring control station for monitoring, measuring, recording, controlling and reporting the upcoming negative pressures, in which the aforementioned task is solved, is characterized in that in a closed, protected against manual external interference, not manipulable, easily transportable , central measuring and control station ( 1 ) with EDP = electrical data processing ( 2 ), which detects negative pressure measured at various points in the renovation area by measuring probes ( 5 ) via variable cable lines ( 12 ) and data amplifier, pressure fluctuations in the renovation area are regulated independently, with fluctuating Outside air pressure a self-adjustment of the measuring probes ( 5 ) to 0 Pascal was carried out, the recorded negative pressure was saved, all the machines required for maintaining the negative pressure were automatically controlled, malfunctions in the negative pressure maintenance were rectified by starting them up and reported to the rehabilitation area and / or the field offices, at S in the event of a power failure, an emergency generator is switched on and a comprehensible operating sequence is recorded on a monitor ( 3 ) and / or printer ( 4 ).

In the method according to the invention for monitoring, measuring, recording, controlling and reporting the negative pressure in the work area, the device required for this is accommodated in an easily transportable, compact measuring control station ( 1 ) and is protected against direct manual external interference in an unmanipulable manner. The possibility of remote inquiry ( 6 ) provides control over the entire daily routine. In addition, an immediate and subsequent check can be carried out seamlessly by storing ( 2 ), visual checking ( 3 ) and printing ( 4 ) the measured values.

The measurement of the negative pressure at any number of measuring points ( 5 ) during working hours in the renovation area is carried out at freely selected time intervals. Variable cable lines ( 12 ) between the measuring probes ( 5 ) and the measuring control station ( 1 ) as well as data amplifiers ensure high measuring accuracy. All measurement data are stored by the EDP ( 2 ) and can be printed out at any time or called up by remote inquiry ( 6 ). Continuous printing is also possible.

If the negative pressure drops, a warning circuit ( 10 ) is activated, which triggers a warning signal which rises as the negative pressure drops, optically and / or acoustically and thus notifies the workforce in the renovation area. Changes in outside air pressure do not trigger an alarm, as these are taken into account by self-adjusting the vacuum measurement.

In the event of malfunctions in the vacuum system during the non-working phase, the measuring control station ( 1 ) dials previously entered telephone numbers via the EDP ( 2 ) and sends a signal or text message as an emergency call ( 8 ). At the same time, the directly controllable vacuum holding device ( 7 ), which is not fully exhausted, is started up.

If the required vacuum is not reached as a result, a controllable reserve device ( 7 ) is switched on in order to achieve the required value. In the event of a power failure, an automatically starting emergency power device is switched on.

The measures initiated by the EDP ( 2 ) in the event of a malfunction in the event of non-occupancy create a bridging condition until the sources of error have been remedied by the technicians summoned by the emergency call ( 8 ).

The filter status ( 11 ) of the air holding devices ( 7 ), which is also controlled by the measuring control station ( 1 ), is monitored by using measuring modules in front of and behind the filter. If the filter is too dirty, a signal indicates that the filter needs to be changed. This signal does not appear automatically when the filters are replaced.

The EDP ( 2 ) available in the measuring control station ( 1 ) can be used for further work processes in addition to the storage of the specified operating data. So z. B. the total number of personnel and the possible when working in the disposal area. Using a code card, the working time can be recorded and saved like a time clock. Daily reports and material orders can be created using EDP ( 2 ). All information stored in the EDP is available to a central monitoring point, which can control several operating points, by remote access ( 6 ).

There are now various possibilities for the invention Monitoring, measurement, recording, control procedures and reporting the negative pressure z. B. in the work area  Asbestos removal construction site through a measuring control station with the training and designing the required device, for what first on claim 1 and its subordinate Claims are referred.

The following is used in conjunction with the description Embodiment explained with reference to the drawing, which in schematic form the measuring control station with the corresponding Devices and the connection to the measuring probes shows.

The easily transportable, compact measuring control station ( 1 ) contains all the necessary devices that are required to maintain and control the required negative pressure when occupying and not occupying a contaminated site. Via the EDP ( 2 ), all incoming data are stored and can be called up at any time and the measures required in the event of an accident are initiated.

The monitor ( 3 ) is used for immediate visual control and the printer ( 4 ) can record all the data recorded in the EDP ( 2 ) and the measures taken.

The measuring probes ( 5 ) in the renovation area provide the EDP ( 2 ) with the data material for the assessment of the required negative pressure maintenance, the status of which can be determined seamlessly at any time of the day from any central recording or control point via the remote query ( 6 ) . Variable cable lines with data amplifiers ensure high measuring accuracy.

The control of the vacuum devices ( 7 ) for maintaining or restoring the required vacuum reacts automatically in normal and malfunction. A malfunction in the occupied construction site is reported to the workforce by an optical and / or acoustic signal ( 10 ). If no call is made, an emergency call ( 8 ) is made to the on-call service and / or to the central monitoring point.

An automatically responding filter monitor ( 11 ) indicates the required filter change.

The personnel entry ( 9 ) in the disposal area or for the entire construction site is possible with the help of a code card via the EDP ( 2 ).

Reference list

1 - measuring control station
2 - EDV electrical data processing
3 - monitor
4 - printer
5 - measuring probes
6 - Remote data transmission
7 - Control vacuum devices
8 - emergency call
9 - Personnel registration
10 - signal, acoustic / optical
11 - filter monitoring

Claims (10)

1. Procedure for monitoring, measurement, recording, control and reporting of the pending negative pressure detected at various points by sensors in the remediation of contaminated sites, eg. B. from weak and / or bound asbestos products from parts of buildings in work areas closed from the environment, characterized in that in a closed, protected against manual interference, non-manipulable, easily transportable, central measuring and control station ( 1 ) with EDV electr. Data processing ( 2 ), which detects negative pressure measured at various points in the renovation area by measuring probes ( 5 ) via variable cable lines and data amplifiers, regulates pressure fluctuations in the renovation area independently, in the event of fluctuating outside air pressure, the measuring probes ( 5 ) self-adjust to 0 Pascal, which are recorded Negative pressures stored, all machines required for maintaining negative pressure are automatically controlled, malfunctions in negative pressure maintenance are rectified by starting them up and reported to the renovation area and / or the branch offices. In the event of a power failure, an emergency generator is switched on and on a monitor ( 3 ) and the like nd / or printer ( 4 ) a traceable operational sequence can be recorded without gaps. 2. The method according to claim 1, characterized in that the detected negative pressure on the measuring probes ( 5 ) at selectable time intervals or continuously over the entire renovation period (2), recorded (3) and printed (4). 3. The method according to any one of claims 1 and 2, characterized in that the stored data ( 2 ) are detected by remote query. 4. The method according to any one of claims 1 to 3, characterized in that a required filter change ( 11 ) on the vacuum holding devices ( 7 ) is automatically displayed. 5. The method according to any one of claims 1 to 4, characterized in that via the EDP ( 2 ) the general person registration in the disposal area and the creation of reports and the material order is carried out at any time by remote inquiry ( 6 ). 6. Measuring and control station for monitoring, measurement, recording, control and reporting of the pending negative pressure detected at various points by sensors during the remediation of contaminated sites, eg. B. of weak and / or bound asbestos products from parts of the building in work areas closed from the environment, characterized in that a closed, protected against manual interference, non-manipulable, easily transportable, central measuring control station ( 1 ) with EDP = electrical data processing ( 2 ) is provided, which is controlled in such a way that the negative pressures measured at various points in the renovation area by measuring probes ( 5 ) can be detected via variable cable lines and data amplifiers, pressure fluctuations in the renovation area can be regulated independently, with fluctuating outside air pressure, self-adjustment of the measuring probes ( 5 ) feasible to 0 Pascal, the recorded negative pressure can be saved, all machines required for maintaining negative pressure can be controlled automatically, malfunctions in negative pressure maintenance can be remedied by starting the same and can be reported to the renovation area and / or the branch offices can be switched off and a traceable operating sequence can be recorded continuously on a monitor ( 3 ) and / or printer ( 4 ). 7. Measuring control station according to claim 6, characterized in that the detected negative pressure on the measuring probes ( 5 ) at selectable time intervals or continuously over the entire renovation period (2), recorded (3) and printed (4) can be. 8. Measuring control station according to one of claims 6 and 7, characterized in that the stored data ( 2 ) are to be acquired by remote inquiry. 9. Measuring control station according to one of claims 6 to 8, characterized in that a required filter change ( 11 ) on the vacuum holding devices ( 7 ) can be displayed automatically. 10. Measuring control station according to one of claims 6 to 9, characterized in that via the EDP ( 2 ) the general person registration in the disposal area and the creation of reports and the material order can be made available at any time by remote inquiry ( 6 ).