Vermeer is an advanced HDD drilling rig supplier, also have their own mud pump company with the drilling rig. The SA400 is high pressure mud pump powered by a Tier 4i (EU Stage IIIB) or Tier 3 (EU Stage IIIA) engine. With fluids pumping capacity from 78gpm to 435gpm.

Normally that should have a 800gpm~100gpm mud system to match that. Main feature of GN1000gpm mud system:

1)Handing Capacity: Up to 1056 Usgpm (4000 litres/min) for total system
2)3 Phase Cleaning: With 2.6㎡ screen area for first phase shaker, and 2x10 inch Desander cone,12x4inch Desilter cone.
With 2.6㎡ drying screen for mud cleaner. Specifically for high solids content and fine solids.
3)Cut Point: Designed to achieve a cut point of 16 microns
4)Transport Dimensions:
Mud Tank With Attachment: 11500L x 2500W x 3200H (Folded & only removing pipelines and cones of mud cleaner) Or customized.

2xShakers and the Mud Cleaner underflow Shaker can stay on tank while traveling.

There is one story from GN, that why CPP, one of the biggest HDD contract finally choose GN Solids Control, without any connection before which should be the essence of Chinese business.Yes, we sieze a chance to prove ourselves, go back to old days, CPP prefer US products, and buy from our competitor, no offence, but they are not so happy with such oversea after sales, and also time difference and so on, especially comparing with the expection after high price been paid.

So when their unit have problem, they need some one to handle it, GN Solids Control helped with that. Proved our professionality, and get another chance that they will try our system.

Here comes another, one big player in TBM, before purchased Schauenburg desander to recycle the water. And now have problems with shaker screens and shaker motors, then here we go.

One of the for sale unit from Boramtech:

Feed rate: 300 m³/h
Bulk feed rate: 80 t/h

Replacement Option from GN:

Check the video here: http://gnsolidscontrol.com/video/desander-plant-tbm-slurry-shield 

If you are also searching for another option, freely to contact us. 

1 According to the circuit diagram connect all unconnected lines, such as centrifuge pump motors, plug-in of shale shaker and mud cleaner, Vacuum Degasser electric motor or Vacuum Degasser Starter and receive motor.

(2) Check all electrical steering and part of the test;
A, start 1 # centrifuge pump, check the steering direction, adjusted it to clockwise from the view of motor, and check if there is any abnormal sound. After checking all above, make sure the inlet valve and outlet valve of centrifuge pump is open, start the centrifuge pump to detect the no-load/full-load current and voltage, and take notes of the figure. Take this test when the current and voltage is possible.
B, before starting the shale shaker, please check foundation bolts if stable enough, disassemble 4 sieve box fixing bolts and then loose four rotating bolt, rotate the fixed block in 90 degrees and fix it. Meanwhile,  fix the 4 4 sieve fixing bolts on the fixed block. Confirm there’s nothing foreign matter in the sieve box. Start the shale shaker only the screens are well fixed. 

C, the shale shaker part is familiar with section b.
D, Check whether the vacuum degasser is well fixed, and then open the plug of liquid gas separator to filling water up to the maximum level of the content gauge. Press the start button, check the direction of rotation is consistent with the rotating arrow guard posted above the shield; and check if there is any abnormal sound. After checking all above, open the ball valve of exhaust, when it’s in a semi-open state, start the host, when the host runs well, start the vacuum pump, check the pump rotation direction is consistent with the direction of pump head and check the sound. All checking all above, adjust the exhaust displacement of ball valve and then adjust vacuum gauge to stabilize between 0.025 to 0.065.
E, fix the income transmitter, press the start button of it, check the screw rotation direction is consistent with the direction of the outlet pusher.
F, stabilize the mud gas separator, connect the exhaust manifold and the inlet mainfold. 

3 water or mud debugging;
A, water flow into any compartment of 3# mud tank via the manifold on the 3#mud, after precipitation water or mud will overflow to the shale shaker or mud cleaner. Or directly to the shaker and mud cleaner, mud or water can flow anywhere can be controlled by valve. Mud in 3# tank can only be discharged through the outlet settled below .

We have found the following label on screens on desiler unit:

120 mesh

GN Solids Control

Size 900x750 mm

We did not find any labels or signs on screens on the shale shaker so we are not sure what is there. Please check at your engineering department and maybe they will confirm to you. Questions:

- what API number is for 120 mesh screens?

- What API number is for 40 mesh screen?

Please comment what does it mean 120 mesh?

If this is 120 mesh, what is API number for these screens and what is D100 separation value (in microns)? Please comment. Actually according our technology, following derrick wiring tech, normally 40mesh is API40, 120mesh is API120, unless different screening technology is required, can not always reverse.

Pls refer our brochure here http://gnshakerscreen.com/images/GN%20Shaker%20Screen.pdf and derrcik screen brochure. We ordered two different types of screens and received all screens the same (API 40, 394 microns). Please comment why we received not the same screens as ordered by our company.

And please be so kind and comment what does it mean API 40? If API 40, so what is a value of mesh ? http://www.halliburton.com/public/bar/contents/data_sheets/web/sales_data_sheets/sds-048.pdf This might be a good link for you, D100 to API in page2. This API40, 394 microns, between 40~50mesh, take it 45mesh, http://www.showmegold.org/news/Mesh.htm