· PDF fileShip-Unloader Performance & Design Criteria Form Request for Proposals for Design,...

Ship-Unloader Performance & Design Criteria Form Request for Proposals for Design, Fabrication, Delivery, Installation, and

Commissioning of Rail-Mounted Multi-Purpose Ship Unloading Crane

Page 1

Instructions: The Company shall provide the following design data on this form as part of Proposal.

Company Name:

Section 1: Design Data

1. Grab bucket #1

a) type/model:

b) capacity,

c) weight with and without counterweight

d) bucket material:

e) plate thickness:

f) rope connection type:

g) rope reeving system:

2. Grab bucket #2

a) type/model:

b) capacity,:

c) weight with and without counterweight

d) bucket material:

e) plate thickness:

f) rope connection type:

g) rope reeving system:

3. Bucket closing and holding hoists

a) rope, diameter/length:

b) rope tension:



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c) rope construction:

d) rope safety factor:

e) drum diameter/face width:

f) drum bearing type:

g) motor type:

h) motor rating/speed:

i) reducer rating mechanical/thermal

j) reducer output speed:

k) high speed coupling type/rating

l) low speed coupling type/rating

m) dynamic brake type/rating

n) static brake type/rating

o) weight

4. Travel Mechanisms

a) number of trucks:

• water side:

• landside:

b) number of driven wheels:

c) wheel spacing:

d) maximum wheel loads:

• waterside (working cond.):

• landside (working. cond.):

e) wheel diameter:

f) wheel bearing type:

g) truck pivot type:

h) drive motor type:

i) motor rating/speed:

j) gear reducer type:

k) reducer output speed:



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l) reducer rating mechanical/thermal:

m) high speed coupling type/rating:

n) low speed coupling type/rating:

o) brake type/rating:

p) weight of one truck assembly:

q) equalizer beam pivot type:

r) weight of one equalizer assembly:

s) travel speed maximum:

t) travel speed variability:

5. Rail Clamps and Tie Downs

a) clamp quantity:

b) clamp type/rating:

c) method of tie-down and rating

6. Buffers and bumpers

a) buffer type/rating:

b) bumper type/rating:

7. Dump Hopper

a) dimensions of hopper:

b) struck capacity (volume):

c) plate slope:

d) adjustment mechanism for flow gate:

e) adjustment mechanism feeder flow

f) liner material/thickness:

g) method liner attachment:

h) valley angle:

i) fillet size/type:

j) weight:

k) description hopper support:

l) arrangement of load cells:

m) load cell type/capacity(weight):

n) description removable grid:



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o) weight grid section:

p) Dump Hopper with bucket rotation (option):

q) dimensions of hopper:

r) struck capacity:

s) plate slope:

t) other changes:

8. Apron Feeder

a) width/speed (variable):

b) pulley center distance:

c) number/type support chain:

d) ultimate strength chain:

e) size of each pan:

f) drive motor type:

g) motor rating/speed:

h) reducer type:

i) reducer rating mechanical/thermal:

j) high speed coupling type/rating:

k) low speed coupling type/rating:

l) number/type drive chain:

m) diameter drive sprocket:

n) rating drive chain:

o) type/capacity of safety shear pin:

p) description of torque protection:

q) description of variable speed control:

r) weight of feeder:

s) Belt feeder (possible alternative):

t) belt width/speed:

u) pulley center distance:

v) take-up travel distance:

w) belt construction:

x) number of idlers carrying/return:

y) drive motor type:



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z) motor:

aa) rating/speed:

bb) reducer type:

cc) reducer rating mechanical/thermal:

dd) high speed coupling type/rating:

ee) low speed coupling type/rating:

ff) description special impact table:

gg) weight of feeder:

9. Conveyors

a) belt width/speed:

b) pulley center distance:

c) take-up travel distance:

d) belt construction:

e) number of idlers carrying/return:

f) drive motor type:

g) motor rating/speed:

h) reducer type:

i) reducer rating mechanical/thermal:

j) high speed coupling type/rating:

k) low speed coupling type/rating:

l) type of speed pickup:

m) weight:

10. Dust Suppression (if water sprays, list below)

a) spray pump type:

b) pump head/capacity:

c) drive motor type:

d) motor rating/speed:

e) coupling type/rating:

f) metering pump type:

g) tank capacity:



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11. Dust Suppression (other than water sprays)

a) Type(s):

b) dimensions:

12. Passenger/freight elevator

c) cage size:

d) travel speed:

e) hoist motor type:

f) motor rating/speed:

g) gear reducer type:

h) reducer rating mechanical/thermal:

i) high speed coupling type/rating:

j) low speed coupling type/rating:

k) cog dimensions/face width:

13. Service hoists

a) Hoist capacity short tons:

b) number of hoists:

c) type:

14. Electrical system

a) total connected load:

b) average power demand:

c) maximum power demand:

15. Transformers

a) power transformer type:

b) power transformer rating:

c) control transformer type:

d) control transformer rating:



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16. Cable and hose reels

a) power cable reel type:

b) power cable reel size:

c) control cable reel type:

d) control cable reel size:

17. Drive controls

a) Describe drive controls systems of:

b) bucket closing and holding hoists:

c) trolley traverse winch:

d) boom hoist truck travel drives:

e) dust suppression sprays:

18. Weight of ship unloader

a) weight of structural:

b) weight of mechanical:

c) weight of electrical:

d) weight of counterweight:

e) total weight of unloader:

19. Ship unloader performance

a) average unloading rate:

b) cream digging rate:



Page 8

Section 2: Proposal Drawings

It is essential that drawings be provided with the Proposal to show the following features. Drawings need not be of the actual equipment the Company intends to supply as long as they are truly representative of it.

a) General arrangement of the ship unloader:

c) Elevations and sections:

d) Arrangement of driven and non-driven travel trucks:

e) Arrangement of superstructure and the equipment mounted on it:

f) Single line electrical distribution:

g) Control cab and operator's console arrangement:

h) Rope reeving diagrams:

i) Grab bucket:

j) Machinery house arrangement:

k) Simulation of the digging cycles with time, speed, acceleration and deceleration of each individual movement for all seven (7) hatches of a 70,000 DWT vessel; dimensions as shown on drawings, to show that the average unloading rate can be met:

Section 3: Sources of Supply Identify proposed sub-vendors and country of origin for the following:

a) Gear Reducers:

l) Brakes:

m) Couplings:

n) Apron Feeder:

o) Pulleys:

p) Belting:

q) Grab Buckets:

r) Hoists:

s) Motors AC:

t) Motors DC:

u) Motor Starters AC:

v) Motor Starters DC:

w) Transformers - main power:

x) Transformers - other:

y) Electrical control devices:



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z) Electrical controllers/relays:

aa) Programmable controller:

bb) Video Display Units:

cc) Motor control center:

dd) Data highway:

ee) Switchgear:

ff) Load Cells:

gg) Communication equipment:

hh) Hose reels:

ii) Wire rope:

jj) Rail clamps:

kk) Dust suppression

ll) Cable and wiring:

mm) Cable reeling drum (power):

nn) Cable reeling drum (controls):

oo) Structural steel:

pp) Steel fabrication:

· PDF fileShip-Unloader Performance & Design Criteria Form Request for Proposals for Design,...

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