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WO1991008882A1 - Dispositif d'aide a la fabrication du beton - Google Patents

Dispositif d'aide a la fabrication du beton Download PDF

Info

Publication number
WO1991008882A1
WO1991008882A1 PCT/NO1990/000183 NO9000183W WO9108882A1 WO 1991008882 A1 WO1991008882 A1 WO 1991008882A1 NO 9000183 W NO9000183 W NO 9000183W WO 9108882 A1 WO9108882 A1 WO 9108882A1
Authority
WO
WIPO (PCT)
Prior art keywords
concrete
dosage
container
scaling
transportation
Prior art date
Application number
PCT/NO1990/000183
Other languages
English (en)
Inventor
Fredrik Sontun
Original Assignee
Premix A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Premix A/S filed Critical Premix A/S
Publication of WO1991008882A1 publication Critical patent/WO1991008882A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant

Definitions

  • the present invention relates to a device for use in connection with the production of concrete.
  • An object of the present invention is to give instructions for a more rational handling of the crude materials to be implementet by the production of concrete, for thereby providing larger efficiency, better prices, as well as more flexible and alternative solutions for varying and time dependent needs for concrete deliveries.
  • the invention is providing: - A more rational handling of the crude materials.
  • a device for the use in connection with the production of concrete which is characterized in that the device comprises a plurality of mutually adapted modules, for example module containers comprising cement silo, silo for sand and gravel, as well as means for controlling a concrete component dosage process.
  • the modules may then comprise standardized containers which have been assembled to also comprise workshop, office, personal rooms etc., said containers being fitted together for the passing in and passing out of concrete mixing units, for example one or more containers which are used for a batch production of concrete in non- mixed or separated condition, or for example an automixer, or a combination of said concrete mixing units.
  • the device according to the present invention is characterized in that the means for controlling a concrete component dosage process comprises scaling means adapted to the individual modules or containers, and especially comprising at least one scaling cell based on the principle of subtraction, preferably a plurality of said scaling cells for the individual silo container.
  • each dosage container comprises a substantially horizontally arranged transporta ⁇ tion screw which can be extended beyond the extension of the the dosage container, and which along the extension of the transportation screw possibly can communicate with one or more adjustable outlets or downpipes having various discharge capacities, possibly dosage valves, and that the container possibly comprises a vibrator.
  • the various containers can be assembled to an effective and rational dosage installation, and may then comprise not only cement dosage containers, but also foundation units and possibly fitting units, such that the various auxiliar means, for example transportation screws can be located at a suitable level of height, for example at level with the infeed funnel to a transportation ready concrete mixing unit, i.e. a container for finished dosed quantities of concrete mixing components or an automixer of combinations thereof.
  • a transportation ready concrete mixing unit i.e. a container for finished dosed quantities of concrete mixing components or an automixer of combinations thereof.
  • the device according to the invention may also comprise the following features individually or in combination: a) that the device is also adapted to a division for special sacks which are filled with module quantities of respective components for a concrete mixture, for example comprising a rail/suspension system for filling, transporta ⁇ tion, loading and/or discharge of sack contents, b) that the device comprises special sacks for the recirculation a limited number of times, for example ten times use, c) that the finished weighed and separate component guantities ready for transportation are adapted to (mobile) mixing machines or automixers of various capacity located on the building site, for batch production of concrete on the building site.
  • the end user does then no need any knowledge or effect any work for compiling, proportioning or make any unnecessary transportation of crude materials for the production of concrete on the building site. Conse- quently, the end user will have a buffer system at his disposal, namely a buffer system which at a right point of time can transfer the finished proportioned separate components to a mixing machine on the building site, wherein the components are mixed for the preparation of concrete.
  • the transport of components could be carried out in periods which may be adapted to the production program of the factory, and the buffer storage on the building site makes it possible for the constructor to put in more flexibility in the progress schedules on the building site.
  • the transportation of "dry" finished dosed components may be combined with the delivery of finished concrete in the automixer, since the finished mixed concrete in the automixer is used firstly, whereafter further production and delivery may be carried out according to planning, without the danger of concrete curing during transportation.
  • the production of concrete on the work site also entails that there is achieved optimum concrete quality.
  • Figure 1 is a block diagram illustrating the survey of the system into which the device according to the present invention can be implemented.
  • Figure 2 is a perspective view of an example of a module installation constructed with and around the device according to the invention.
  • Figure 3 is a perspective view of an assembled module, comprising scaling means and horizontal transportation means.
  • Figure 3a illustrates on a larger scale a special embodiment of a transportation means in form of a horizontal transpor ⁇ tation screw.
  • Figure 4 is a block diagram illustrating an example of a control system which can be associated to a dosage module.
  • Figure 5 and Figure 6 are perspective views, seen from the outer side and with parts of the outer wall cut away, respectively, of a special container having separate batches of finished dosed concrete materials.
  • Figure 7 is a simplified perspective view illustrating the use of the special container having batches of dosed concrete material in connection with an automixer and building crane.
  • Figure 8 is a perspective view illustrating the combination of a building crane, a special container having finished dosed batches of concrete material and a more stationary mixing machine.
  • Figure 9 is a diagrammatic perspective view illustrating special containers in combination with a forced mixer and a building crane.
  • Figure 10 illustrates an automixer having additional equipment for appropriate storage and handling of sack products.
  • Figures 11a and 11b are diagrammatic perspective views illustrating an embodiment for a rail/suspension system for filling, transportation, loading and/or discharge of sack products, here in connection with a forced mixer.
  • Figue 12 is a transportation vehicle loaded with special containers which either contain a concrete component individually, or which individually contains a combination of finished dosed concrete components fed out from a superjacent silo.
  • Figures 13a and 13b illustrate the use of a special container including finished dosed batches of concrete products in combination with a concrete mixer mounted on a building site tractor.
  • Figure 14a illustrates similarely to Figure 12 the special container loaded on a transportation vehicle
  • Figure 14b illustrates the special containers located on the building site ready for use, for example in connection with a concrete mixer mounted on a building site tractor.
  • Figure 15 illustrates a set-up of special containers on a building site, wherein alternative types of concrete mixers are used in combination with hoisting cranes and/or building site tractors.
  • FIG. 1 which illustrates a block diagram for a dosage plant and associated functions, it appears how the device according to the invention may be adapted to this plant.
  • a dosage plant is further elucidated in Figure 2, which illustrates an arbitrary example of such a dosage plant built up by means of modules, and appropriately in the form of standard containers.
  • a module system in the form of 20" containers, and the system is then assembled in various sizes depending on the requirement and application.
  • Such a plant thus ensures flexibility and simplifies the planning of transportation and assembly.
  • a dosage plant which generally is designated by the reference numeral 1 , and which comprises two dosage stations, here designated 2a and 2b, respectively.
  • the dosage stations 2a and 2b are at such a level that they together with the remaining modules will constitute a transportation path for transportation vehicles 3a and 3b, respectively, and are at such a level that the contents of the dosage stations can appropriately be transferred to the containers or the automixers located on the transportation vehicles.
  • FIG. 2 there is in Figure 2 illustrated a buffer storage 4 for concrete components, for example cement, sand and/or gravel etc. which are refilled by means of a tractor 5. From the buffer storage 4 there extends a transportation band 5a which refills concrete components at an appropriate level in the total module constructed dosage plant 1.
  • a transportation device 6 which is connected to a second, not illustrated buffer storage having concrete components which are different from those of the buffer storage 4, but which correspondingly refills its own type of concrete component at various levels in the dosage plant 1.
  • the device according to the invention comprises a module container 7 constituted by a cement silo, and comprising means for controlling a dosage process.
  • the module container 7 is located on a sitting element 7a, which in turn rests on a foundation element 7b.
  • the upper dosage container 7, especially a cement dosage container is supported such that the dosage can be monitored by means of negative scaling, i.e. that the dosage container 7 in the illustrated embodiment is supported at each corner on a scaling cell, 8a, 8b, 8c and 8d, respectively.
  • Each of the scaling cells 8a, 8b, 8c and 8c can in an appropriate manner be connected to callibration unit, each scaling cell being included in a floating supporting system for the dosage container 7 in question.
  • each scaling cell possibly be adapted a plurality of measuring units, the dosage silo 7 possibly being equipped with means for suspending a check weight or permanent weight control.
  • the dosage container 7 in Figure 3 is at the bottom merging into a trough 7c, in the bottom of which is mounted at transportation means taking the form of a transportation screw 9.
  • the transportation screw 9 extends along the complete bottom of the trough 7c which at the one end is open for allowing an extension of the transportation screw 9 including an additional trough 9a to extend beyond a filling area wherein a transportation vehicle 10 with a filling funnel 10a can be parked for dosed filling of the concrete component in question.
  • the embodiment of transportation scew 9 which is illustrated in Figure 3, can be different in connection with the embodiment of dosage containers illustrated in Figure 2, the transportation scew then preferably communicating with one or more controlable down pipes in the dosage container in question. These down pipes can have different discharge capacities, possibly comprising dosage valves for manufacture.
  • FIG. 3 there is also illustrated a filling pipe or blowing pipe 11 serving to fill the dosage container 7 in an appropriate manner, and to let the contents of the container 7 slide downwardly towards the transportation scew 9.
  • foundation element 7b on which the dosage container 7 rests indirectly there is made space for cement filters 12a, 12b, at the bottom of an individual blowout pipe 12x and 12y, respectively.
  • foundation elements can also comprise control rooms and/or storage for equipment which are used in the module plant.
  • a dosage container there may be provided a module shaped volume increasing part, as this appears from the previously discussed Figure 2, preferably equipped with an inner blowing and discharge pipe.
  • a module shaped top element comprising inspection hatch and inner blowing and discharge pipes.
  • FIG 3a there is illustrated details in a transporta ⁇ tion screw 9, and this is located as previously at the bottom of a dosage container 7, there under the transporta ⁇ tion screw 9 being provided a trough 9a which together with the transportation screw 9 extend through the one end wall of the container 7.
  • the transportation screw trough 9a opens into a discharge piece 13 which can communicate with a concrete mixing unit, for example one or more containers to contain the components to be used in a batch production of concrete in unmixed or separate condition, or for example an automixer as illustrated in Figure 3, or possibly a combination of said concrete mixing units.
  • a concrete mixing unit for example one or more containers to contain the components to be used in a batch production of concrete in unmixed or separate condition, or for example an automixer as illustrated in Figure 3, or possibly a combination of said concrete mixing units.
  • the transportation screw 9 there are provided one or more hatches 9k which by means of a not illustrated handle can be displaced forwardly and rearwardly above the transportation screw 9 and the associated trough 9a, as this is illustrated by the double arrow B.
  • the outfeed degree can be regulated, together with the feeding speed of the screw 9.
  • the hatches 9k and the speed regulation of the transportation screw 9 there may be provided a large degree of variations in the outfeed capacity through the outfeed piece 13, as this is illu ⁇ strated by the arrow C.
  • the system including four scaling cells 8a-8d, located at each corner of the dosage container 7 involves a very large dosage accuracy for the dosage containers having silo capacity from 80 to 200 tons.
  • the dosage system can be adjusted in a very simple manner, i.e. the weighing capacity can be regulated with simple means. It is thereby avoided a varying dosage degree and degree of accuracy at different weighing speeds, for example for 250 or 2500 kg, which may easily lead to varying dosage degree for degree of accuracy in previously known scaling operations.
  • the disclosed scaling system for negative scaling one can also eliminate the source.of error due to variations in the emptying degree, since the present scaling system also will catch larger or lesser quantities of material which may remain after the unloading.
  • the accuracy of measurement may be increased, and it is possible in a simple manner to achieve zero position during scaling.
  • the present scaling system could give a direct digital reading of the dosage values in question, which is more accurate than analog scaling.
  • the present scaling system by an appropriate connection of the scaling elements, it is further possible not only to increase the instrument accuracy, but also easily to adapt the scaling system to various scaling intervals, for example a first interval from 0 to 30.000 kg, and a second interval from 30.000 to 60.000 kg.
  • the system will also permit scaling with large digital accuracy in connection with weight of 200.000 kg and more.
  • the scales may easily be checked by using a weight suspended below the silo, and the silo can also be equipped with a permanent weight control. When receiving cement, a possible shrinking or wastage could be detected immediately.
  • the present dosage and scaling system also renders a simple access for further processing of documentations and data in question, because the scaling cells in a simple manner can be connected to further data processing equipment, for the bringing forth of information concerning the dosage process, for example for accounting print outs, vouchies, invoicing, etc.
  • Figure 4 there is illustrated a flow chart of how the information processing can take place in connection with the present plant in which the device according to the invention is implemented.
  • a block 14 which is designated electronic weighing system
  • the block 15 is designated as a registration system comprising computers with associated terminals and printers.
  • the block 15 From the block 15 there are branched out information which may comprise driving orders 16, invoicing, accounting and contract salary 17 and sub- information comprising reports 17a and contract salary 17b, and from the block 17 information is passed on the debit collection 18, which in turn can give information to the block 19 concerning invoice/pro forma and automatic charging. Finally, the block 19 may give information to the block 20 regarding bank associates.
  • Figures 5 and 6 there is illustrated an embodiment of a type of special container which can be used in connection with the present dosage plant, and this type of container can for example be of the embodiment which is further disclosed in Norwegian patent application 89.2603, namely a container comprising one or more chambers which in advance contains house sand, gravel, and cement, and which is appropriately dimensioned for batch production of concrete, for example half a cubic meter.
  • Such special containers may be used for the transfer of crude materials in batches from the present dosage plant to a separate mixing machine on the building side.
  • the advantage in such a transfer of predosed batches of concrete components is that all weighing takes place in the factory, and that all transportation to the building site, the organization and the carrying out of the concrete work can take place in accordance with a varyable time schedule.
  • Such a varyable time schedule will be favourable in connection with a building project, because the activities on the building site can be recastled or because other frame conditions of the project are changed.
  • FIG 7 there is illustrated a special container 20 which is hoistered into position by means of a building crane 21 for having its contents emptied into an automixer 22, said automixer here finding application as an approxi- mately stationary mixing machine.
  • This method for producing concrete on the building site will enable reduction of shrinking or wastage and overtime, and at the same time render a possibility for a more accurate adaption of the scheduled or changed building plan.
  • the principle according to Figure 7 makes it possible for delivery of finished dosed components in large quantities, and at the same time it is opened for the possibility of delivering appropriate day consumption at smaller building sites. For example, there may be transported to larger building sites well above 10 1113 of concrete components by one delivery.
  • Figure 8 there is illustrated a special container 20 which is hoisted into position by a building crane 21 , but here in relation to a stationary mixing machine 23, for example a 21113 mixing machine of the type Gecom.
  • This system is suitable for field development, for constructors which operates outside larger cities, or where there is a need for a more systematic production.
  • the time schedule, the shrinkage and overtime may be administered in a surveyable and rational manner.
  • Figure 9 illustrates a variant of how the special container can find application on a building site, a special container 20 here being lifted in position by a building crane 21 on a frame 22, on which there is already located a second special container 20a, it being under the frame 22 located a forced mixer 23.
  • a forced mixer 23 can be stationary or partly mobile, and the system according to Figure 9 can be appropriate for building sites of medium size, or can be used in connection with element production on a small or medium large scale.
  • Figure 5 illustrates a special automixer 24 which in addition to being provided with a concrete mixer 25, also comprises a device 26 for the carrying, transportation and discharge of special sacks 27.
  • a concrete mixer 25 which can transport a first batch for immediate use on the building site, can later be used for further production of concrete by filling the contents of the sacks 27 in appropriate quantities into the concrete mixer 25 for the production of concrete on the building site.
  • Prepared quantities of crude material in the form of sack products can be an alternative when lesser quantities of concrete is needed on the building site, and represents an appropriate and inexpensive storage system.
  • the mixing machine can also be different from the mixing machine 25 depicted on the automixer 24 according to Figure 10, but can also be included in a mobile system which can ambulate between the building sites at which the sack products have been placed in advance. This method can by an appropriate handling and storing constitute a competable alternative to the other previously discussed techniques.
  • FIGs 11a and 11b there is illustrated a system which is favourable in connection with smaller mouldings, and it is appropriate then to utilize a systematized delivery arrangement including the predosed sack products 27a, 27d etc., comprising cement, sand and possibly gravel separate ⁇ ly.
  • the production of concrete can then be carried out by means of small mixing units, for example by a forced mixer 23 of the type illustrated in Figure 11 , which will have the components to be included in the concrete mixture, supplied from said sacks 27a, 27b, etc., which appropriately can be suspended in a simple rail/suspension system 28.
  • FIG 12 there is illustrated a transportation vehicle 29 comprising a plurality of special containers 29p-20u which may contain separate concrete components, or a mixture thereof, said separate special containers 20p-20u having top openings which are adapted to a module assembled silo 1a, which can be included in the main silo 1 according to Figure 2.
  • the silo la is equipped with necessary outfeed devices for batch transfer of cement, gravel and sand, respective- ly, to the individual transportable special containers 20p- 20u.
  • Figures 13a and 13b illustrate various variants as regards the combination of a special container 20 and a concrete mixing machine 30 mounted on a building site tractor 31, said Figure 13a illustrating the transfer of the contents of the special container 20 to a concrete mixing machine 30, whereas Figure 13b illustrates the concrete mixing machine 30 transported to a discharge vessel 32 which in a suitable manner can be further transported by means of said tractor 31 or other transportation/hoisting devices on the building site to the moulding place in question.
  • Figures 14a and 14b illustrates further examples relating to the transportation of a plurality of special containers 20a, 20d from a silo 1a ( Figure 14a) to a building site ( Figure 14b) where a waiting building site tractor 31 can communi- - cate with one by one of the special containers 20a-20d for the transfer of appropriate quantities of concrete com ⁇ ponents for the production of concrete on the building site itself .
  • Figure 15 illustrates a variant of an arrangement of special containers 20a...20n, which appropriately may communicate with concrete mixing machines, for example a first concrete mixing machine 30a which can be hoisted into position by means of a crane 33, or a second concrete mixing machine 30b which can be transported by means of a suitable building site tractor 31.
  • concrete mixing machines for example a first concrete mixing machine 30a which can be hoisted into position by means of a crane 33, or a second concrete mixing machine 30b which can be transported by means of a suitable building site tractor 31.
  • the following points may be set up, which state the advantages contributed by the device according to the present invention: larger accuracy by weighing, which renders better quality and better economy, simpler check, which also contributes to better quality, - effective check of any shrinkage, which contributes to a better overall economy, the dosage installation is inexpensive to provide, - the dosage installation renders stable operation, since it comprises relatively few movable parts, the dosage installation and associated components are simple to operate, the installation renders a simpler organization and associated operationally team, the dosage installation with its module principle renders a simple construction and renders the possibility of expanded capacity in a short time, the dosage installation is the outspring to mobility and effective transportation due to the application of standard containers, the dosage system is independent of compressed air.

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  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

Dispositif d'aide à la fabrication du béton permettant de mettre au point un système qui répond de manière plus efficace et rationnelle aux besoins du marché à la fois en béton prêt et en composants assemblés par dosage destinés à la fabrication du béton sur le chantier de construction. On propose un dispositif caractérisé en ce qu'il comporte une pluralité de modules adaptés les uns aux autres (7), par exemple des chambres modulaires, constitués d'un silo à ciment, d'un silo pour le sable et le gravier, ainsi que des dispositifs (8a-8d; 9) servant à commander un processus rationnel de dosage des composants du béton. On décrit notamment la façon dont le dispositif peut s'incorporer à une installation de dosage bien adaptée, ainsi que la façon dont on peut agencer, en relation avec une telle installation de dosage, un système de pesage précis et fiable.
PCT/NO1990/000183 1989-12-08 1990-12-05 Dispositif d'aide a la fabrication du beton WO1991008882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO894935 1989-12-08
NO89894935A NO894935L (no) 1989-12-08 1989-12-08 Anordning til bruk ved fremstilling av betong.

Publications (1)

Publication Number Publication Date
WO1991008882A1 true WO1991008882A1 (fr) 1991-06-27

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ID=19892669

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1990/000183 WO1991008882A1 (fr) 1989-12-08 1990-12-05 Dispositif d'aide a la fabrication du beton

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NO (1) NO894935L (fr)
WO (1) WO1991008882A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9115774U1 (de) * 1991-12-19 1992-04-16 Klemm und Dämm Betriebsgesellschaft m.b.H., Glanegg System zur Erzeugung von Styropor-Leichtbeton
DE9207366U1 (de) * 1992-05-30 1992-08-06 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Mobile Entsorgungsanlage
DE4138912A1 (de) * 1991-11-27 1993-06-09 Markus 7053 Kernen De Amann Vorrichtung zur herstellung von vorgemischten baustoffen
DE4335434A1 (de) * 1992-12-23 1994-06-30 Johannes Hoffmann Transportable, flexible Mischanlage für Putz und Farben für Baustellen
GB2293664A (en) * 1994-09-21 1996-04-03 Dawnlawn Limited A process controller for concrete mixing
RU2195397C1 (ru) * 2001-04-26 2002-12-27 Гордилов Олег Григорьевич Мобильная установка для приготовления пенобетона
EP1520672A1 (fr) * 1999-01-19 2005-04-06 Walter-Heilit Verkehrswegebau GmbH Installation de mélange de béton avec conteneurs
US7175333B2 (en) * 2004-02-25 2007-02-13 Willy Reyneveld Method for delivery of bulk cement to a job site

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE440879B (sv) * 1982-02-23 1985-08-26 Gert Nordstrom Mobil betongberedningsstation
EP0155062A1 (fr) * 1984-03-13 1985-09-18 van Beek, Pieter Erich Dispositif pour préparer un mélange
SE443741B (sv) * 1983-11-07 1986-03-10 Torsten Nick Ljung Sett for tillverkning av betong i mobil betongstation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE440879B (sv) * 1982-02-23 1985-08-26 Gert Nordstrom Mobil betongberedningsstation
SE443741B (sv) * 1983-11-07 1986-03-10 Torsten Nick Ljung Sett for tillverkning av betong i mobil betongstation
EP0155062A1 (fr) * 1984-03-13 1985-09-18 van Beek, Pieter Erich Dispositif pour préparer un mélange

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138912A1 (de) * 1991-11-27 1993-06-09 Markus 7053 Kernen De Amann Vorrichtung zur herstellung von vorgemischten baustoffen
DE9115774U1 (de) * 1991-12-19 1992-04-16 Klemm und Dämm Betriebsgesellschaft m.b.H., Glanegg System zur Erzeugung von Styropor-Leichtbeton
DE9207366U1 (de) * 1992-05-30 1992-08-06 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Mobile Entsorgungsanlage
DE4335434A1 (de) * 1992-12-23 1994-06-30 Johannes Hoffmann Transportable, flexible Mischanlage für Putz und Farben für Baustellen
GB2293664A (en) * 1994-09-21 1996-04-03 Dawnlawn Limited A process controller for concrete mixing
GB2293664B (en) * 1994-09-21 1999-06-30 Dawnlawn Limited A manufacturing process controller
EP1520672A1 (fr) * 1999-01-19 2005-04-06 Walter-Heilit Verkehrswegebau GmbH Installation de mélange de béton avec conteneurs
RU2195397C1 (ru) * 2001-04-26 2002-12-27 Гордилов Олег Григорьевич Мобильная установка для приготовления пенобетона
US7175333B2 (en) * 2004-02-25 2007-02-13 Willy Reyneveld Method for delivery of bulk cement to a job site

Also Published As

Publication number Publication date
NO894935D0 (no) 1989-12-08
NO894935L (no) 1991-06-10

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