vergas biogas duo-sphere
TRANSCRIPT
![Page 1: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/1.jpg)
Vergas biogas systems
VerVergasgas LtdLtd
““Duo-Sphere and Dome-gas” Duo-Sphere and Dome-gas” Double-membrane flexible biogas Double-membrane flexible biogas
gasholders. gasholders. ©©
![Page 2: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/2.jpg)
Vergas biogas systems
Vergas manufactures and distributes worldwide a range of double-membrane flexible gasholders for use in the wastewater processing industry.
Will not corrode
Much less expensive than steel
Rapidly installed (<2 days)
Aesthetically attractive
Can be moved
Easily repaired
Long working life
Easy access for inspection
![Page 3: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/3.jpg)
Vergas biogas systems
From initial base slab, flat and easily constructed . . . . .
![Page 4: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/4.jpg)
Vergas biogas systems
. . . .to a complete gasholder in less than 2 days!
![Page 5: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/5.jpg)
Vergas biogas systems
Some of our completed projects . . .
. . . .along with over 100 other gasholders in UK and Worldwide
![Page 6: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/6.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
![Page 7: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/7.jpg)
Vergas biogas systems
OUTER MEMBRANE
![Page 8: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/8.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
![Page 9: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/9.jpg)
Vergas biogas systems
INNER MEMBRANE
![Page 10: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/10.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
![Page 11: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/11.jpg)
Vergas biogas systems
ANCHORAGE SYSTEM
![Page 12: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/12.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
![Page 13: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/13.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
![Page 14: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/14.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
Gas system pressurisation
![Page 15: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/15.jpg)
Vergas biogas systems
AIR PRESSURISATION FANS
![Page 16: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/16.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
Gas system pressurisation
Air regulation system
![Page 17: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/17.jpg)
Vergas biogas systems
AIR REGULATING SYSTEM
![Page 18: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/18.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
Gas system pressurisation
Air regulation system
Gas over-pressure relief system
![Page 19: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/19.jpg)
Vergas biogas systems
GAS OVER-PRESSURE RELIEF SYSTEM
![Page 20: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/20.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
Gas system pressurisation
Air regulation system
Gas over-pressure relief system
Level measurement system
![Page 21: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/21.jpg)
Vergas biogas systems
LEVEL MEASUREMENT SYSTEM
![Page 22: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/22.jpg)
Vergas biogas systems
Double-membrane flexible gasholders consist of:-
Outer membrane
Inner membrane
Anchorage system
Air pressurisation fans, to enable:-
Wind and snow load resistance
Gas system pressurisation
Air regulation system
Gas over-pressure relief system
Level measurement system
Gas leak detection system
![Page 23: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/23.jpg)
Vergas biogas systems
GAS LEAK DETECTION SYSTEM
![Page 24: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/24.jpg)
Vergas biogas systems
INSTALLATION PROCEDURE
![Page 25: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/25.jpg)
Vergas biogas systems
The concrete base slab is constructed – it is flat and simple . . . . .
![Page 26: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/26.jpg)
Vergas biogas systems
. . . . . air and gas pipes are cast in . . . . .
![Page 27: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/27.jpg)
Vergas biogas systems
. . . the fans are installed and the inner membrane fixed . . .
![Page 28: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/28.jpg)
Vergas biogas systems
. . . the outer membrane is then installed, with its supports from the inner membrane . . .
![Page 29: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/29.jpg)
Vergas biogas systems
. . . the gas over-pressure relief system is added . . .
![Page 30: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/30.jpg)
Vergas biogas systems
. . . and finally the instruments are installed.
![Page 31: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/31.jpg)
Vergas biogas systems
Initial concrete base slab, flat and simple.
![Page 32: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/32.jpg)
Vergas biogas systems
Fan set and air regulation valve ready for use (note air pipe is cast into slab).
![Page 33: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/33.jpg)
Vergas biogas systems
Gas inlet and outlet pipes cast into slab.
![Page 34: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/34.jpg)
Vergas biogas systems
Inner membrane, pre-packed in factory, is brought up to the slab.
![Page 35: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/35.jpg)
Vergas biogas systems
The membrane locations are marked out onto the slab . . . . .
![Page 36: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/36.jpg)
Vergas biogas systems
. . . . . all that is required is two simple circles drawn on the slab.
![Page 37: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/37.jpg)
Vergas biogas systems
The inner membrane is rolled onto the slab . . . . .
![Page 38: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/38.jpg)
Vergas biogas systems
. . . . . unwrapped . . . . .
![Page 39: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/39.jpg)
Vergas biogas systems
. . . . . and unrolled across the slab into approximate position.
![Page 40: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/40.jpg)
Vergas biogas systems
The inner membrane is then half unfurled . . . . .
![Page 41: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/41.jpg)
Vergas biogas systems
. . . . . and shifted up to the setting-out marks.
![Page 42: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/42.jpg)
Vergas biogas systems
The other half is then unfurled . . . . .
![Page 43: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/43.jpg)
Vergas biogas systems
. . . . . and the inner membrane is now more or less located.
![Page 44: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/44.jpg)
Vergas biogas systems
The inner membrane holding down strip (the “keder”) is then pulled carefully up to its correct position on the setting-out mark.
![Page 45: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/45.jpg)
Vergas biogas systems
The reinforcement patch at the gas pipe positions needs to be carefully located above the pipes.
![Page 46: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/46.jpg)
Vergas biogas systems
The stainless steel anchorage angles.
![Page 47: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/47.jpg)
Vergas biogas systems
A neoprene strip is located on the “keder” . . . . .
![Page 48: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/48.jpg)
Vergas biogas systems
. . . . . and one of the stainless steel angles located on it so that the outer edge of the “keder” is exactly coincident with the setting-out mark.
![Page 49: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/49.jpg)
Vergas biogas systems
Drilling now commences . . . . .
![Page 50: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/50.jpg)
Vergas biogas systems
. . . . . and the stainless steel “through bolt” is hammered home.
![Page 51: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/51.jpg)
Vergas biogas systems
This process continues right round the circumference until the inner membrane is entirely anchored. Note that there have been no parts requiring casting-in.
![Page 52: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/52.jpg)
Vergas biogas systems
The straps which connect the inner membrane to the outer membrane are shown here being assembled. These straps are needed to support the inner membrane (at its equator) from the outer membrane when inflated.
![Page 53: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/53.jpg)
Vergas biogas systems
The inner membrane attachment is welded in place in the factory . . . . .
![Page 54: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/54.jpg)
Vergas biogas systems
. . . . . and to this is simply connected another length of webbing strap that constitutes the main connection between inner membrane and outer . . . . .
![Page 55: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/55.jpg)
Vergas biogas systems
. . . . . leaving us with a strap ready for later connection to the outer membrane.
![Page 56: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/56.jpg)
Vergas biogas systems
We now need to get to the gas pipe connections to make a permanent seal with the inner membrane floor. Access is gained through an access tube welded to the inner membrane wall.
![Page 57: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/57.jpg)
Vergas biogas systems
Inside the inner membrane, on the floor, a hole is cut through the membrane at the gas pipe position. This is simply done with a knife.
![Page 58: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/58.jpg)
Vergas biogas systems
A stainless steel “backing ring” is then located over the cast-in gas pipe flange (which has threaded holes) . . . . .
![Page 59: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/59.jpg)
Vergas biogas systems
. . . . . and holes are cut out of the membrane using a standard hole punch.
![Page 60: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/60.jpg)
Vergas biogas systems
Finally the “backing ring” is installed with two gaskets and bolted up with stainless steel bolts, washers and sealant.
![Page 61: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/61.jpg)
Vergas biogas systems
The access tube can now be sealed, using hot air.
![Page 62: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/62.jpg)
Vergas biogas systems
This work must be done carefully, as the tube must be completely sealed and gas tight.
![Page 63: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/63.jpg)
Vergas biogas systems
Finally the sealed tube is rolled up . . . . .
![Page 64: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/64.jpg)
Vergas biogas systems
. . . . . and tucked into its own “envelope”, readily accessible if entry is ever required in future . . . . .
![Page 65: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/65.jpg)
Vergas biogas systems
. . . . . and the envelope is finally laced up to secure the rolled up tube.
![Page 66: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/66.jpg)
Vergas biogas systems
The target board for receiving the ultrasonic level measurement signal from the transducer to be located in the top of the outer membrane is now assembled . . . . .
![Page 67: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/67.jpg)
Vergas biogas systems
. . . . . and connected securely to the top of the inner membrane by ropes tied through factory-welded tags.
![Page 68: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/68.jpg)
Vergas biogas systems
A ballast ring is now assembled. This weight gives stability to the inner membrane and ensures a regular shape to the membrane during inflation and deflation.
![Page 69: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/69.jpg)
Vergas biogas systems
The inner membrane is now complete, and work on the outer membrane can begin.
![Page 70: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/70.jpg)
Vergas biogas systems
The outer membrane is rolled up to the slab . . . . .
![Page 71: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/71.jpg)
Vergas biogas systems
. . . . . and over the completed inner membrane.
![Page 72: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/72.jpg)
Vergas biogas systems
It is unfurled . . . . .
![Page 73: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/73.jpg)
Vergas biogas systems
. . . . . unrolled . . . . .
![Page 74: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/74.jpg)
Vergas biogas systems
. . . . . and spread out to its approximate position on the slab.
![Page 75: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/75.jpg)
Vergas biogas systems
The outer membrane spread out.
![Page 76: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/76.jpg)
Vergas biogas systems
Holes are punched in the outer membrane for the various fittings . . . . .
![Page 77: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/77.jpg)
Vergas biogas systems
. . . . . which are then simply attached with stainless steel bolts.
![Page 78: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/78.jpg)
Vergas biogas systems
The anchorages can now be fixed, in exactly the same manner as carried out on the inner membrane.
![Page 79: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/79.jpg)
Vergas biogas systems
The anchoring down carries on round the periphery of the outer membrane, working to the marking out lines drawn earlier.
![Page 80: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/80.jpg)
Vergas biogas systems
Outer membrane door detail.
![Page 81: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/81.jpg)
Vergas biogas systems
The outer membrane is now complete . . . . .
![Page 82: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/82.jpg)
Vergas biogas systems
. . . . . and inflation can start, using the installed fans.
![Page 83: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/83.jpg)
Vergas biogas systems
Inflation proceeds . . . . .
![Page 84: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/84.jpg)
Vergas biogas systems
. . . . . and we can now enter the outer membrane, through the hatch, to see the membrane lifting away from the inner membrane, which is not yet attached to the outer.
![Page 85: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/85.jpg)
Vergas biogas systems
The circumferential cable is threaded through the outer membrane eyelets, and the previously laced up connecting straps attached . . . . .
![Page 86: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/86.jpg)
Vergas biogas systems
. . . . .and the gas leak detection pipe fitted.
![Page 87: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/87.jpg)
Vergas biogas systems
The outer membrane can now be finally inflated to its working pressure, and the final adjustments made to the interconnecting straps.
![Page 88: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/88.jpg)
Vergas biogas systems
The work inside the gasholder is now compete. Au revoir!
![Page 89: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/89.jpg)
Vergas biogas systems
The gas leak detection pipe is now pulled through its outer membrane flange.
![Page 90: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/90.jpg)
Vergas biogas systems
The gasholder is nearly complete.
![Page 91: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/91.jpg)
Vergas biogas systems
The satisfied crew.
![Page 92: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/92.jpg)
Vergas biogas systems
Satisfied clients include Water and Waste Water Utility companies and contractors, worldwide.
Our reference sites number over 100 projects in England, Wales, Scotland, Ireland, Isle of Wight, France, Poland, The Netherlands, Finland, Denmark, Cape Verde, Turkey, USA, British Virgin Islands, U.A.E. and Australia. We are constantly tendering on many other projects, worldwide.
We specialise in flexible membrane structures for biogas, odour control, tank roofs and, and have developed a “tank-top” biogas option with our licensees in USA.
![Page 93: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/93.jpg)
Vergas biogas systems
Vergas double-membrane flexible gasholders, (Dome-gas and Duo-spheres) are available in modular sizes from 20m3 to 9000m3.
Installation time varies from 1 day for a small gasholder to about 5 days for the very largest.
The gasholder range is provided with full warranties, and is backed by the expertise and experience of our specialists in the design, manufacture, supply, installation, commissioning and technical support of the full range of membrane products.
![Page 94: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/94.jpg)
Vergas biogas systems
We are represented in the USA by our partner, WesTech, who is the sole Licensee of our membrane products in:-
USA
Canada
Mexico
and works with us to engineer and promote our products in many other countries around the world including:-
Republic of China
South America
![Page 95: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/95.jpg)
Vergas biogas systems
We also have partners, distributors and agents in:-
Poland
Finland
The Netherlands
Denmark
![Page 96: Vergas Biogas Duo-Sphere](https://reader037.vdocuments.net/reader037/viewer/2022103017/557a9524d8b42a9b568b4685/html5/thumbnails/96.jpg)
Vergas biogas systems
Vergas Limited
The Buckman Bldg
43 Southampton Road
RINGWOOD
Hampshire BH24 1HE
Tel: +44 (0) 1425 463203Mobiles: +44 (0) 7834 231119 and +44 (0) 7973 123178.
Email: [email protected] ©