Unit 8: L/C Amendment and Extension Part Ⅰ : L/C Amendment Part Ⅱ : L/C Extension.
UNIT #2 AMENDMENT
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Transcript of UNIT #2 AMENDMENT
UNIT # 2 AMENDMENT
Prepared by / Mohamed Khamis
Aim of the project
Complete overhauling for the system by replacing the old machines by new ones.
To increase the overall efficiency of the system , increase its durability , decrease break down rate and increase productivity and production rate .
old system arrangement and its situation
Feeder Bucket Elevator .1 Crusher Bucket
Elevator .2 Screen Outlet Hoppers
Machine Picture of the machine Condition
Old feeder
the feeder body and its vibrating cart were completely depreciated
Old Screen The screen needs complete overhauling for its body and its decks
Machine Picture of the machine Condition
Old Buckets
The two buckets body and its components such as upper and lower drums and its gear boxes were very depreciated.
Old Filter The filter efficiency was very low , due to complex suction tree ( bad engineering design and selection ).
New system arrangement
Feeder Bucket Elevator Screen Outlet
Hoppers
Machine Picture of the machine Condition
New feeder
Completely new feeder with new vibrating cart and new grizzly screen .
New Bucket Elevator
New bucket elevator with new drive unit and larger capacity .
Machine Picture of the machine Condition
New ScreenCompletely new screen with different drive mechanism and with larger capacity ..
New Outlet hoppers
Completely new hopper with larger capacity and new chaises .
RGS maintenance team scope
1. Manufacturing new hoppers Manufacturing 3 new hoppers with the following dimensions - Length = 2m - width = 1.5 m - height = 1.5 m - thickness = 10mm- Each hopper capacity = 4 ton.- Manufacturing a new chaises for all hoppers .
Task Specification Material & labor cost
Combi offer
Manufatering 3 new hoppers with chaises
• length = 2m•Width = 1.5m •Height = 1.5 m•Chaises ( H20 beam , length= 3.75m
40,000 EGP 72,000 EGP
We already saved 32,000 EGP
2. Electrical preparation
Completely new power panel and control panel with its accessories such as contactors , circuit breakers ,,,,,,,,ETC.
Automatic operation by applying timing sequence . Completely new cables tray with new cables and new distribution .
Control panel Power panel
Task Specification Materials , labor cost
External offer
Power panel Dim 1x2x0.5 m 8,000 EGP 13,000 EGP
Control panel Dim 1x2x0.5 m 14,000 EGP 20,000 EGP
Cable trays & cables & lighting
160 m cable trays With cables 8 spots
4,000 EGP 10,000 EGP
We already saved 17,000 EGP
3. Filter Adjustment
Relocate the filter and the fan to simplify the suction tree . Technical adjustment to increase filter efficiency by changing inlet and outlet pipes
location and adjust its elevation . Only 3 suction points ( on bucket , screen and hoppers will increase the filter
efficiency.
Task Specification Material &labor cost
External offer
Relocate filter Adjust suction tree
•Adjust filter input &output and fan elevation •Install new suction points
12,000 EGP 25,000 EGP
We already saved 13,000 EGP
4. Walkers , Handrails , Stairs and Scales chaises
Manufacturing a new walkers for technicians to make their movement more easier , handrails and stairs were attached to this walkers .
Manufacturing a new chaises for scales with a simple design and high quality
Task Specification Material &labor cost
External offer
• manufacturing new walkers with handrails and stairs
•Manufacturing new scales chaises
•20 square meter walkers , 5 stairs and handrails .
• H10 beam chaises with its frame and hocks
25,000 EGP 43,000 EGP
We already saved 18,000 EGP
Task Saved Amount
1 New Hoppers 32,000 EGP
2 Electrical preparation 17,000 EGP
3 Filter Adjustment 13,000 EGP
4 Walkers , chaises' 18,000 EGP
Total Saving 80,000 EGP
Total Saving
Advantages of the new Amendment To simplify the system and production line by
decreasing no. of machines without affecting on its productivity .
And to decrease break down ratio . And to make the movement of handling equipments
more easier The old situation let the crusher take the first shock
and this condition lead to hard impact on its drums . On the old situation we have to change its drums
every 2 months , and we have to change 4 or 6 bearings every month , and this is a huge extra cost .
The current situation will increase the crusher durability as we installed it after the screen .