DE2116954A1 - Covered storage basin for liquids - Google Patents

Description

0ϊΡί, .-! Να. WUFBm RAB & K

PATENT ADVOCATE "'1 1 R 9 5 4

7 STUTTGART:, MOSERSTRASSE 6 TELEFOH (07Us £ 443 OS

6 «April 1971 / F
- C 71 -

Cü: <IPA3iIS FRAKCAISE DSS PEOBOISS, SA
5, Rue Kichel-Ange, PARIS XVI, France

Covered storage basin for liquids

The invention relates to a fluid reservoir, - in particular
for volatile or not yet completely degassed liquids such as hydrocarbon and petroleum products «Ss are reservoirs
Rit inflatable or floating Dacir- known = where the
The surface of the stored, possibly evaporating liquid is closed off from the ambient atmosphere by a floating or sliding shield, the edge of which is also enclosed
the inner wall of the storage tank is connected by a sheet of flexible, water- and gas-tight "material". enable and thereby a complete closure of the liquid with respect to the space of the container above the Trenndeokv ζυ r; ev / are. However, since the 'walls of such Becker. C-Ier · 2 ^ bä; rer consist of sheet metal, this type of storage is to be used: ^ nv-r relatively insignificant quantities of liquid,

SAD 109S4S / 1169

a.Vso vjsit used below a million of cubic meters y-medals, as the costs for metallic containers lead out ■:. "3hr large dimensions would be too high.

On the other hand, storage tanks with a very old capacity are already known, which consist of natural or excavated cavities, the walls of which are made impermeable by cementing and tar painting or by covering them with plastic sheeting. Since such large orbits cannot be vivii / oesii at a reasonable price and also not absolutely impermeable to hydrocarbons and other petroleum products and also not produced with sufficient mechanical resistance, the oil has been stored above a layer of water. This suggestion leads to some advantages , however, a certain AnzänL of constraints into account the same time to take, namely the loss of a non-negligible storage volume, the controlled delivery of V / ater and oil, and especially the difficulty of creating a sufficiently dense coverage taking into account the level changes of the storage liquid «

A known proposal for eliminating the aforementioned difficult cold is to keep the height of the cover constant. However, this results in new difficulties with regard to the supply of water and oil, without being able to solve the greater problem of a cover that is absolutely impervious to petroleum products at the same time. The use of a cover that is in contact with the storage fluid, as is practiced in very large water and caustic storage tanks, is also not possible because of the permanent presence of gases or vapors released from petroleum products, because the particular difficulty is j to find a cover with low initial costs with good mechanical resistance and an AbcLicht η against the vapors or gases released from petroleum products.

- fm.

45/1169 '

SAD RI

C 71 - 5 -

The known by the disadvantages outlined above Memory covers existing object is according to the invention solved in that a storage basin for volatile liquids, in particular petroleum products is provided with the following features: a) a cover consists of at least one on lying on the surface of the storage liquid, essentially gastight ceiling as well as one arranged above Vi-watertight tarpaulin; b) one against water and hydrocarbons impermeable lower 'tarpaulin lies on the walls of a natural or artificial depression or trough and is verbuncen at its edges with the edges of the essentially gas-tight ceiling; c) with a first anchoring ring on the edge of the natural or artificial recess, the edges of the lower tarpaulin and the gas-tight ceiling are attached] d) outside the first is a second anchoring ring for attaching the top one outer tarpaulin provided; e) a fan group acts on the Space between the outer tarpaulin and the ceiling so that the former is inflated and the ceiling is pressed against the storage fluid and the first anchor ring is above the spillway arranged by the bowl trickling down from the upper x'lane, and wherein the inflated tarpaulin contains at least one opening opposite the air inlet point.

Through this cover according to the invention of a storage basin Significant advantages achieved over the known proposals: The inflated roof protects the floating ceiling completely against external impurities and enables due to the overpressure generated between this outer tarpaulin and the ceiling floating on the storage fluid the maintenance of the original consistency of the petroleum product, which until now has only been made floating through weight compensation metallic coverings could have been achieved, but such a solution is practically impracticable if it is are containers with a large storage capacity. The combination according to the invention also creates a through the

109845/1169

permanent air flow created above the tarpaulin, by supplying cold or warm air, if necessary ensures excellent temperature resistance. About that in addition, avoids the insulating and constantly renewed air cushions the accumulation of gases and the formation of flammable gas mixtures between the outer tarpaulin and the protective one Ceiling, based on the proposal according to the invention, it is also it is no longer necessary to use a ceiling that is absolutely impermeable to petroleum vapors or gases as a floating cover, because by continuously removing the air and gases from the storage liquid at a certain point of the ™ outer shell allows easy monitoring of the facility and in this way a complete and economical protection of the plant is guaranteed.

According to a further proposal of the invention, the cover lying on the storage liquid can be replaced by a cover on the surface the liquid distributed number of swimmers be supported, with the storage capacity of the pool above of 200,000 tons. When using such a float to support the separating ceiling between air and liquid can a material can be used for this ceiling, the strength of which is less than that of such covers, in which the floats In addition to the weight of the ceiling, an additional layer of water must also be carried, which ensures the gas tightness of the floating Cover should secure. This weight is significantly greater than the forces that the necessary overpressure when inflating the

The upper shell arises, which is at most between 4 and 12 g / cm. In this way can be used as material for the outer. Include polyvinyl chloride as a material for the floating ceiling Nitrile rubber can be used on polyester fabric. In this way, an air cushion with a sufficiently large volume is created regardless of the permeability of the floating ceiling and the speed of degassing the stored oil

10984 5/1169

¥ x> iazentrsxl-.n} :;. ;; ·? cheii Lu ^r t wad. combustible; ' Never vape to a g ^ fcü.i.ajwin value.

The advantage üii-äas oäeoadirea feature ό- ^ r £ tf iüdu.ag lies;, iarin _f that there is no absolutely impenetrable material as roofing uuq an otreng hermetic closure of the edges rnui. The air blown in therefore mainly forms a current which spreads from one end of the room to the other side of the s-.vT /. 'Ir.imenderi ceiling and the inflated tarpaulin with more than slightly diffuse branches of low intensity moved through ,,

In a storage basin of this type with a trapezoidal cross-section, in which the floating part of the cover consists of a relatively gas-tight and sec-in hydrocarbons and other petroleum products tight cover, this cover can rest on floats, which are aligned in rows parallel to their length. These run parallel in the largest extent of the tank and in transverse rows, the ceiling being attached to each float in the orientations perpendicular to the side walls of the pool. A couple of ropes of the same length as the inclined point of the pool cross-section is anchored to a concrete ring in which the connection of the edge of the floating ceiling with the covering foil of the pool walls is laid * the rope vsrfcinüen dia ends of the swimmers belonging to the same transverse row in such a way ^ that when the pool empties, the pair of ropes hold the swimmer near the ring, plus the weight of the ceiling part hanging on it, also there, ;; Court of the two-part £ on>; always and the corresponding part of the ceiling, etc., the central part of the ceiling, which is still lying on the cehwimmer carried by the stored fluid, is not subject to any noticeable pull.

This combination results in a simple and cheap one

k ^ ü, ^ i the already known ■ eriaö- :; BJs-yfrangen, weiöhs vervo.-sk - *;].? ^ Κοίΐ & ί, η &'ϊΐοηβη

1 0 9 8 A 5/11 S Ö V-

require «changing the surface of the cover with Cr3iT. Rise and fall in the level of stored fluid is taken into account. Thus, a simple group v: .n floats with a lying thereon elastic blanket _s d: e is not subjected to any appreciable train. Such a solution can be carried out in many variants <,

kr distance between the floats that are perpendicular to the horizontal Part of the pool floor are arranged, can be simple, light, rigid, e.g. hollow elements, that are preserved ■ Can also serve as a support for the ceiling. Just the parts of the ceiling :;. yben the edge of the pelvis can form wrinkles, which by the way no disadvantage arises because the ceiling is constantly ensuring the separation between air and liquid. Sinking the liquid surface is not damaged, as already was explained above,

The inflated tarpaulin of the roof can be reinforced by tensioned cross ropes, each of which is anchored with its ends in the ground and attached to the tarpaulin in at least three points, for example by means of straps. It follows that the capacity of the known memory can be expanded considerably, that is to say up to over a million tons, the resistance to the effects of wind being sufficient to prevent any excessive deformation or the tearing off of the inflated tarpaulin. Under the combined effect of the tension of the ropes and the excess pressure between the floating cover part and the upper tarpaulin, folds are formed on the latter, through which the rainwater can drain away.

Both anchors are the ilen parts of the concrete layer on top of "the slope, which forms from the natural soil and the soil raised during the ejection of the Beekens the upper part of the basin walls on which the inner plane is located. The concrete layer forms at its Ifcf nec of Eisente for anchoring

the upper tarpaulin containing the second anchoring ring and in it a channel for the drainage of the giant and dripping water, on its inner circumference another breakdown and the first anchoring ring.

According to a further feature of the invention is the outer surface the tarpaulin lying on the walls of the pool is provided with a waterproof coating, and the area around these walls around has water drainage. The other, inner one The surface of this tarpaulin is made of a layer of polyvinyl chloride or a layer known as "Rilsan" Polyamide or covered with nitryl rubber. The edge the petroleum-proof cover, which is folded and connected to the edge of the floating cover folded into the upper part of the wall of the storage basin. This results in a storage basin with an opposite one the well-known far greater absorption capacity at low Cost and with advantageous tightness and protection against each Risk of the formation of explosive mixtures from the vapors arising from the petroleum products. Those against hydrocarbons Dense ceiling can be reduced according to the invention by laying two individual ceilings on top of one another and a layer of sand between them Thickness between 3 and Λθ cm on the bottom of the pool. This arrangement has the advantage of noticing the appearance of any volatile matter from the liquid above the ceiling as the liquid passes through the sand to a display device.

According to a particular feature of the invention, the waterproof and also an inner tarpaulin, which is impervious to hydrocarbons, on a layer of clay coalesced on the walls of the basin, to which a fungicidal agent such as borax is added to keep away burrowing animals. This is how it becomes easy, large pools to build at very low cost, without the excavated pit having to be cemented by removing the earth masses obtained on the one hand increase the embankments and thus the storage

109845/116 9

GM8INAL

-8- 211695 /,

Increase absorption capacity, on the other hand the floating roof and anchor the hydrocarbon-tight ceiling. The waterproof lower tarpaulin can also be covered by a first film made of polyamide, known as "Rilsan", one side of which rests directly on the floor, while the back rests against a hydrocarbon-tight ceiling.

The mentioned and other characteristic properties of the The invention emerges from the following description of the examples of embodiments shown in the accompanying drawings a storage basin with a large capacity.

Fig. 1 is the side view of an exemplary embodiment of a storage basin according to the invention,

Fig. 2 is the plan view of this container.

Fig. 3 shows the section through the arrangement according to the Line IH-III in Fig. 1.

Fig. 4 is a detail from the section according to line VI-IV in Fig. 2 and shows the attachment of the roof to a concrete layer that surrounds the pool.

Fig. 5 shows enlarged part of the section VV in Fig. 1 and the attachment of the inflated tarpaulin serving as a roof.
Fig. 6 is a modification of the fastening according to Fig.

Fig. 7 shows in perspective a pool with the roof removed.

Fig. 8 is a partial cross-sectional view of another form of storage basin.

The dash-dotted lines 1 in FIG. 1 are intended to indicate that, in contrast to known storage containers, the one to be described here Pelvis can be very long. The costs of the materials used for this and of the construction remain at a given value The width of the pool is always proportional to its length and does not require any additional surcharges. According to this fact

109845 / 1.169

BAD GWQINAL

C 71 - 9 -

one chooses for such a structure, for example, widths of the order of 50 to 200 meters, while the length can be several 100 meters.

The dashed line 2 in Fig. 1 gives the profile of the pelvic floor on, the line j5 in Fig. 2 shows the outline of the recess. the Roofing has the shape of an inflated tarpaulin 4, Fig. 1. This is stabilized by ropes 5, which are attached to the pool ring-shaped surrounding concrete layer 6 are attached. Blower 7 convey air through duct 8 into the space under the tarpaulin 4. openings for ventilation, also for the discharge of vapors and gases from the stored materials are in places as at 9 in the roofing tarpaulin 4. With 10 connections are referred to for the parts used to produce the roofing.

In the plan view according to FIG. 2, various items are shown, including a drainage channel 11 in the concrete layer 6 for receiving and draining the trickling or dripping water. The FIG. J corresponding to section III in FIG reveals the inflated tarpaulin 4 and one of the reinforcement ropes 5, which in this example is within the covered Space runs. The inner or floating cover 12 is supported by rows of floats; the swimmers of a transverse row (IJ) are connected by ropes' 42 so that two consecutive Swimmers can never move beyond a given length, a distance that is itself less than the length of the Ceiling part 12, which connects two successive floats. The ropes 42 are anchored on the inner circumference of the concrete ring 6 next to the fastening points of the ceiling 12. The length of each The rope 42 is equal to the circumference of the basin section so that when the liquid level drops, the first rows of swimmers next to the side walls of the pool gradually move onto them place without any tensile force acting on the ceiling, apart from ■ a small part by weight of the part between the first float and its attachment point on the concrete ring 6 lies. When the ceiling is attached to the floats and the

109845 / 11'6 9 ^

The liquid level drops continuously until the floats in the second row next to the edge of the pool are on the side walls place, only a small part of the weight acts on the ceiling part between the first and second row of floats these parts. It is therefore not necessary for the ceiling 12 to offer very great resistance to this low tensile force.

If the bottom of the storage basin is horizontal, as in the example according to FIG. 7, this rope 42 can be replaced by two ropes of equal length on the smaller side of the basin section. As a w edge is provided a pair of cables of short length for each cross-series part of the floats in the vicinity of which each cable connects one end of the float ,. The floats, which are perpendicular to the horizontal part of the floor, can be kept apart by means of strong and lightweight elements, for example hollow tubes, on which the central part of the ceiling can rest.

In the embodiment according to FIG. J5, drainage lines 14 are provided which lead to a collecting channel .15. A ceiling 16 lying on the clay-containing layer 17 seals the floor. This ceiling can be a layer of polyvinyl chloride or a sheet of chlorosulfone polyethylene. The upper tarpaulin 4 of the roofing contains a synthetic weft of good expansion resistance and good breaking strength such as the ^{polyamide known as "nylon 11} " or the polyester under the name "Tergal". It is covered with a plastic or elastic material such as poly venyl chloride or a Chlorosulfone polyethylene known under the name ^{w Hypalon ".} The tarpaulin 4 with its large dimensions is composed of individual parts, the connections 10 of which are made according to FIGS. 1 and 2 by gluing, welding or other means. The fastening of the tarpaulin 4 on the concrete layer 6 can be seen from FIG. 4. The iron piece 4j5 is embedded in the concrete. The tarpaulin is sandwiched between

109845/1169

c γι - li -

one underlay 18 and one on the embedded iron stucco held clamping piece 19. The pressure is applied by means of a bolt 20 which is passed through the eyelet 21. This device, which is repeated over the entire circumference of the tarpaulin, is an effective means of sealing the Attaching the memory cover to perform, especially even if the entire air flow is to be directed to precisely defined points at the far end of the basin.

FIG. 5 shows details of a similar anchorage that used when there is already a cavity in the floor. A layer of concrete 6 is applied to the edges of the pool, which is reinforced by reinforced concrete ribs 6a and is used for anchoring. Fixing devices are also located in this layer for the tarpaulin.

A channel 11 is provided for draining off the water. In a second channel 38 (FIGS. 5 and 7) the tightness of the various ceilings 35 > 37 and 4l is ensured, as in that the ends of these ceilings are inserted into the channel and then overburden or earth is piled up in it, as at 39 is shown in Fig. 5, for example.

Fig. 6 shows, as a modification, details of the anchoring when the earth is thrown up onto the edges by the casting of the basin is to increase the fit. Concrete slabs 22, placed on the ground 23, are covered by the overburden 24. In the Plate 22 fixed metallic rods 25 run through the Passage 2S in the web 27 on the horizontally smoothed surface of the ejected soil. The gutter 11 serves to drain off the rainwater, while the gutter 26 provides a tight fixation the ceiling 46 and tarpaulin 47 ensures.

Lunatic In the present case, the blanket 46 can be closed at low cost because, for example, a simple film made of polyvinyl chloride with an insert of polyester has the necessary mechanical properties

10 9 8 4 5/1169

BATH

provides and prevents the ceiling from losing its strength under a weight of 2 tons per meter, and which is sufficient even with a mediocre tightness against the vapors of petroleum products. In contrast, ¹ Vf is a combined cover, one side of which rests on the ground and has excellent resistance to puncturing and pulling. This side can also consist of vinyl chloride or of a chlorosulfurized polyethylene, as mentioned under the IJa. "Hy pa lon" is known. The inside of the cover also has excellent chemical resistance properties and is completely impermeable to hydrocarbons. If Jk not x the outside; is aterproof, by coating them with a coating of Chiorosulfcn polyethylene, which is known under the name "Hypalcn", so that one then obtains a cover large mechanical forces resisting and thereby also not wears out.

In order to show the details of a drawing of the pool covered by the inflated roof even more clearly, FIG. 7 gives a perspective view of this pool, and FIG. C shows an enlarged section of a container with a triangular ;; Cross-section.

In FIG. T, a part of the pelvic floor 33 with a trapezoidal cross-section lies between the lines 351, j52. The walls and Böschun-Memo ~ $ k caused naturally or with the dam work after tamping. Above this area, which is also drained and can be covered with a layer of 10 to 10 cm thick with clay, as shown in FIG. 6 at 48, optionally also with a fine sand layer 49, lies a first cover 35 can be created by combining plastic or elastic foils by means of welding or gluing, such as from the polyvinyl chloride known as Hypalon or chlorosulfone polyethylene.

1 09845 / 116-9

Above the de-jhft 35 in Fig. 7 and δ vrlra a small oxide layer 36 is optionally provided, the thickness of which can be between 5 and 4G ο / η and which can be provided with a second cover 37 on which the storage liquid lies. This ceiling 37, the properties of which are similar to the ceiling 47 in FIG. 6, is attached by means of welding or gluing from plastic or elastic material (foil) susa.rrar, see etv-a from. olyvenylohlorid, given \ faiio in gj sure type like the ceiling 35, even if this consists of the same material. The edges of the two ceilings overlap on the Bösohungsflächen 3 ^ and end in the channel 3'- in Fig. 7. The introduction of these ceilings in the channel 38 is from Flg. ^ can be seen in which the soil 39 holds the ceilings. The storage fluid shown at 40 (FIG. 7) is introduced between the ceilings 37 and 41, which are uniform and also have a? -ρ "-cracks have elongation stability. The ceiling 41 rests on both sides float rows 13 of Figure 3, "your edge of kx xrira for the blankets 35 and 37 from the piled-up soil. 5: kept ^Λ (Fig. 5)" The introduction d.er liquid takes place at any Place, for example through a mouth 55 (Fig. 7) and through openings in the ceilings 35 and 37. The supply line runs under the channel 38 and then through the ceilings 35 and Ύΐ, ·>? Ο an elastic sleeve 51 ("Figc 8) is welded in, which is brought into connection with the hose 50 by a folded band 52 with a tight conduction connection.

In a modification, the liquid can be guided directly between the ceilings and 41, that is to say without openings in the inner docks. are approaches, - the solution of the Dleh & igkeitaprcoif- ^ e ^ rubi thereby / IGT = Füi- üle rittsigJ lt ^ can also several Zuf ixh vv ^ p; o χ i e tongues -. ent sjrre 6be nö- also removal Ie.1 services ν or ge D e he η we rd ■ 3 η.

The EinriebU-u, τ ^ -XR -.?^ basin gernä / u j-sr ISRF Ifiduag is in the catfish 'Or s \ ^ ^l \ _ Φ> 3 funae-ii-a'st iRttirliohe or I-pit rünstliche as gSi / acier * and T & gelm &üigs'i?'wo.fcen any Querscbriittiö b'u ^r g'^-:;.-; h ^^ v vifd. by r ^ represents ckenbü ^ s ^r lie hfai.d,

^ ■■ - • -: - ■ ■: -. 103S45 / 11SS

the V- ^. The landings and embankments were tamped down, because the walls were surrounded by a gutter, ^a concrete ceiling was eaten around it, and means for fastening and anchoring were provided for the .ieiie. Then the required clay is applied to the layer of earth forming the basin, the inner layer is laid on top of which a layer of sand is placed; Then the other blankets are provided with the necessary feedthroughs for the supply and extraction lines and passages for the display devices for the liquid vapors that are volatile through the Sana are attached. It is then sufficient to fix the fastening parts for the tarpaulin at the connection points provided on the bed base and to anchor the parts so that the pool can then be used. Then the tarpaulin is inflated by means of a blower and the 3peioherf'lUssiglceit let in. The small openings 9 in? Ig · UEiu 2 make it possible to constantly renew the air mixed with the vapors passing more or less through the ceiling 41. In this way the creation of any explosive mixture is avoided.

109845/1169

"" SAD C «3! '

Claims (12)

Dipl.-ing. WILFRID PATENT PENDING 2 1 1 6 3 Fi A 7 STUTTGART I, MOSERSTRASSE 8 TELEPHONE (0711) 244003 COKPAGIiIE I'RAI.CIASS DE S PETR0LS3,
Paris, France April 6, 1971 / F - C 71 - Claims Γ ^ j) L'ceraachtes storage basin for volatile liquids and · especially for petroleum products, characterized by the following features: a) The cover consists of at least one layer of gas-tight D lying on the surface of the 3 pe ieher liquid (- + C) ? corner (12, 4l) so; ie from a v.'asserdiehten plan arranged above ° (4); t) one opposite wet and _; ;; -; 'en carbon fiber f ^c impermeable plane (17, J £, 47}; i ~ gt to the "..' andunr-on (3'0 ^ iner natural or artificial Vertl '>i" iirio bzv ;. i - ?; lc '; and is connected by its hands to the edges of the i: r. v; it ent borrowed gas-tight ceiling (la); c) rr.with a first anchoring ring (6) arr: At the end of the natural caer künctii jhen V ^ -rti ^ func the edges of the lower tarpaulin and the gas-tight cover are attached; d) outside the first is a second locking ring for the attachment of the upper tarpaulin (4) vergece- ^ n ; e) a G'bi1: lS3grupp3 (7) o on the space between the outer tarpaulin ux: d the ceiling, ac da.2. the former is inflated and the D -cke against the storage liquid pressed Viird and a-.?r first V- ^ ranlierungsring is arranged above the Aoflui'spiegeis of herabri- from the upper Plane ^o selnden water and v.coei the inflated Plane Contains at least one of the Lufteinclasstel ^ g ^ opposite opening. ^103845/1169 CTl. -16- ^{211695 / (} 2. Storage basin according to claim Ij, characterized in that that the cover (12, 41) lying on the storage liquid is distributed over the Plussigkeitsoberflache by a number The float (13) is supported and the basin has a capacity of more than 200,000 tons. 3. Storage basin according to claim 1 and 2, characterized in that that the floating against gas, against hydrocarbons and cover (12, 4l) which is impervious to petroleum products contains floats (13), which are aligned in transverse rows parallel to their length which is itself parallel to the largest dimension of the pool, with the ceiling (12, 46) on each float of those Attached to alignments perpendicular to the side walls of the pool and a pair of ropes of the same length as that Length of the inclined side (j54) of the pool cross-section is anchored on the inner part of the first anchoring ring (6), which holds the edges of the ceiling with the edges of the tarpaulin lying on the walls of the pool, the ropes (42) the Connect the extreme ends of the floats (13) belonging to the same transverse row, while the distances between the ropes two consecutive swimmers are shorter than the lengths the corresponding part of the ceiling (12, 46) between its attachment point on two consecutive swimmers. 4. Storage basin according to claim 1 to 3, characterized in that that the inflated tarpaulin (4) of the roofing is reinforced by transverse and tensioned ropes (5), each of which on both Ends anchored to the ground and attached to the tarpaulin (4) in at least three places. 5. Storage basin according to claims 1 to 4, characterized in that that the concrete layer (6) is poured on the highest part of the natural and through the excavation of the Basin (33) soil raised slope (24), whose V-10 9 8 4 5/1 169 c γι - 17 - '2116 9 5 A Incline the basin walls (J> k) , on which the lower tarpaulin (17 and 35) lies, and that the outer part of the concrete layer the second anchoring ring provided with Siser parts (43, 44) a receiving and drainage channel (11) for the Has trickling and dripping water, while the inner part of the concrete layer (6) is provided with a channel (26, 28) forming the first anchoring ring. 6. Storage basin according to claim 4, characterized in that the ropes (5) are anchored to slabs 22 lying on the ground and there from the raised embankment (24) to the concrete layer (6) are covered. 7. Storage basin according to claim 1 to 6, characterized in that that the outside of the inner tarpaulin (17, 47) with a waterproof Layer is provided, and that the area near the walls has drainage lines (14), the inside the tarpaulin with one made of polyvinyl chloride or one as "Rilsan" known polyamide or nitryl rubber Cover (l6, 37) is coated, and the edge of the petroleum products impermeable ceiling (12, 41) is united with the floating cover, all superimposed edges of the ceiling and the floating roofing are inserted in the upper parts of the wall of the pool. 8. Storage basin according to claims 1 to 7, characterized in that that the blanket impermeable to hydrocarbons consists of two blankets (35) and (37) lying on top of one another and a sand layer (36) small thickness between 5 and 40 cm within the entire double ceiling lying on the bottom (33) of the pool (35 * 37) is provided. 9. Storage basin according to claim 1 to 8, characterized in that the inner waterproof and impermeable to hydrocarbons A compacted tarpaulin (25) for the pool walls 109845/1169 Covered layer of clay lying on the walls of the basin, whereby this layer is mixed with a fungicidal, burrowing product such as borax, and that there is one for Petroleum products impermeable cover (37) is placed. 10. Storage basin according to claim 9, characterized in that between the clay layer and that impermeable to petroleum products Cover a layer of sand (36) " 11. Storage basin according to claim 1 to 10, characterized in that that the waterproof tarpaulin called "Rilsan" is a known polyamide film, one side of which is directly on the "The ground lies, the other with thinner against hydrocarbons tight ceiling contact. 12. Storage basin according to claims 1 to 11, characterized in that that the side of the cover in contact with the walls of the basin is a chlorosulfonic polyethylene is. 1098A5 / 1169 Blank page