-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
This document contains confidential information proprietary to
Bechtel Corporation that is not to be used, disclosed, or
reproduced in any format by any non-Bechtel party without Bechtels
prior written permission.
All rights reserved.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-1 of 2-72
2.0 WORK EXECUTION OVERVIEW
The scope of the project is to construct of all of the
facilities required to process the Las Bambas mineral resource
through a new sulfide flotation concentrator at a rate of 140 000
tons of ore per day from three open pit mines (Ferrobamba,
Chalcobamba and Sulfobamba) over a minimum 18 year mine life. There
are no existing facilities near the site suitable to support the
development or operation of the project. Consequently the project
includes all necessary utilities and infrastructure required for a
fully operational mine and mineral processing plant.
The Las Bambas project is located in Southern Peru approximately
75 km south southwest of Cusco, 300 km north-northwest of Arequipa
and 150 km northwest of Tintaya, Xstratas existing mining
operation.
Las Bambas is the second project to start execution under the
MMG Bechtel Alliance. The first project is the Antapaccay Project
which received NTP for construction in July, 2010. Antapaccay is
located approximately 150 km south, south-east about 2 km from the
open pit mine at Tintaya. Las Bambas and Antapaccay are related for
three very important reasons:
The copper concentrators at each project are based on the
Standard Concentrator+ concept developed as part of the Alliance
since late 2007 and consequently they share common design
elements.
The Antapaccay Project is about 12 months ahead of Las Bambas
with the development of the detail design of the concentrator and
establishment of project execution infrastructure. Their common
design heritage offers significant opportunities to Las Bambas to
utilize that design advancement.
The 12 month delay between the projects and their proximity to
each other also offers significant opportunities to leverage the
work already completed on Antapaccay in all other areas including
project tools, systems, procedures and work processes as well as
sharing resources.
This execution plan for Las Bambas has been prepared to maximize
the benefits from replication, synergy and integration (RSI)
associated with many aspects of the two projects. Further examples
of RSI strategies and benefits are included throughout this PEP and
are further explained in Section 2.4, Implementation Approach.
Bechtels scope of services will include detailed engineering,
procurement, (executed in Santiago, Chile) and construction or
construction management (EPC/CM) as appropriate. The C/CM services
will be executed by Bechtel with Graa y Montero (GyM).
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-2 of 2-72
2.1 Project Baseline The Project Baseline establishes the
boundary of the contracted scope of work, schedule and budget. It
is the benchmark against which change is controlled and against
which project measurement and control is monitored. The source of
the information for the Las Bambas Project Baseline is:
Scope of Facilities Prime Contract Scope document developed by
the Project.
Scope of Services Prime Contract Scope document prepared by the
Project.
Budget Capital Cost estimate based on the cost estimate from the
Feasibility Study prepared by the Project adjusted for scope at
time of NTP.
Schedule Schedule from the Prime Contract based on the schedule
from the Feasibility Study adjusted for execution plan and scope at
time of NTP.
2.2 Scope of Work
The following are descriptions of each facility that constitute
the Las Bambas Project. Some of these facilities are indicated as
deferred in the facility title.
2.2.1 Facility 0100 Mine Area Facilities
Facility 0110 Mine Site Development and Mine Roads (Split scope)
An open pit mine to extract an estimate of 140 000 t/d of ore
from the Las Bambas ore-body for processing through the Las
Bambas Concentrator process plant with its associated waste
handling and storage areas.
Mine pre-stripping of 27 million tons of overburden at the
Ferrobamba pit prior to start of operations that will start
during
year minus 1 utilizing three 73 cubic yard rope shovels and
three drilling machines. (Owner scope)
Five 73 cubic yard rope shovels and seven drilling machines
required for the first full year of production. (Owner
scope)
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-3 of 2-72
The primary feed to the Plant will come from the Ferrobamba open
pit.
Within 6 year, the Chalcobamba pit enters into operation and the
Sulfobamba pit is estimated to start after year 14.
Mine runoff control and treatment facilities. (Split scope)
Drainage Control Ditching and collection system water
(Owner)
Tanks and pumping system to consolidate mine contact water into
the plant reclaim system (Bechtel) Location to be defined
Mine fuel storage and dispensing facility (Bechtels Scope.)There
are dewatering wells (3) external to pit, and piping to a
collection point outside the pit.
Horizontal pumps, piping and tanks associated with well pumps
(Bechtels scope).
Well drilling (Owner)
The water is pumped to the main construction camp. The
overflow water goes to the 5,000 m3 pond in the construction
water system.
Facility 0120 Mine Site Power Supply and Distribution (Split
scope) The mine power loop from the primary crusher substation
will
feed the mobile transformers feeding the mine equipment.
This
system will include a combination of OH line and above or
underground cables with disconnect switches to be able to
isolate sections of the loop when necessary. (Bechtel Design,
Owner construction)
Four (4) mobile substations will be used to supply the rated
voltages in the mine loop system for the shovels and the mine
blast-hole rotary drill, both of 6.9 kV. The mobile substations
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-4 of 2-72
will be fed from the primary crusher area using a 23 kV O/H
line. Trailing cables will power the equipment from the mobile
substations. (Bechtel Design, Owner construction)
The Power supply for the Mine Loop includes the 23kV switchgear
at the Primary Crusher substation, the 23 kV O/H line structure,
which is next to the Primary Crusher electrical room, which
includes the structure and the physical connection to the 23 kV O/H
line, and the external switches at the O/H line
structure.
The mine loop includes the O/H line starting at the tie-in
structure adjacent to the Primary Crusher substation, mobile
substations and the trailing cables between the mobile
substations and the mine equipment. (Owner)
Facility 0130 Mine Ancillary Facilities Facility 0131 Truck Shop
(Owner Scope)
The Truck Shop has been transferred to Owner Operations.
Facility 0132 Fuel Storage and Dispensing
The permanent fuel station is an EPC contract, with Bechtel
construction management.
Bechtel is designing and building the platform in coordination
with Owner operations and will bring the utilities to the
platform
A heavy diesel fuel storage and distribution facility will
be
located in the mine services area, adjacent to the Primary
Crusher. It will be comprised of two 1,000 m3 above ground
tanks providing about a one week supply of diesel fuel.
Distribution systems will be sized to allow for simultaneous
fueling of two mine haul trucks and one ancillary vehicle
(loader, motor grader or bulldozer). The distribution area
will
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-5 of 2-72
also include a booth for the operator who will be
responsible
for the fueling of the mine vehicles and the unloading of fuel
delivery trucks.
The facilities will include storage and distribution facilities
suitably designed for protection against fire.
Facility 0133 Tire Shop
Transferred to Owner Operations
Facility 0134 Truck Wash
Transferred to Owner Operations
Facility 0135 Truck Shop Welding Area
Transferred to Owner Operations
Facility 0136/0137 Mine Office/Change House
Included in Facility 4511, MCC Camp
Facility 0138 Explosives Manufacturing and Storage (Owner) The
explosives manufacturing and storage yards are located in a secure
area having the capacity to contain raw material for explosive,
mix
factory, powder magazines and administrative services of the
blasting contractor
Facility 0139 Mine Yard Utilities (Deferred) Facility 0139 has
been deferred by Owner.
Facility 0140 Mine Access / Control Gatehouse The mine and
primary crusher area access control gate house is a modular
prefabricated building with pre-formed and pre-painted steel
siding. The gate house has an area of about 18 m2 manual entrance
and exit gates. The gate house includes the following:
Control and access room with computer network access to the
overall facility security control and fire alarm system
Two (2) washrooms (Male and Female)
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-6 of 2-72
One (1) lunch room kitchenette for four (4) personnel
Guardhouse Vehicle barriers
2.2.2 Facility 0200 Ore Storage and Handling
Facility 0210 Primary Crushing Run of Mine Ore (ROM) will be
delivered by 330t haul trucks
to the primary crusher installation which will be designed with
two dump pockets to allow a truck to approach each primary
crusher dump pocket simultaneously on a 24 hour per day
operation.
The crushing plant will be sized to handle a nominal 140 000 t/d
of ROM ore. The crushing plant includes two 720 ton crusher dump
pockets, two 1524 x 2 870 mm (60 in x 113 in) primary gyratory
crushers each with a 750 kW motor, two 720 ton crusher surge
pockets, two 2134 mm (84) wide x 11.0 m long primary crusher surge
pocket apron feeders (each with a 5 200 tph maximum capacity) that
feed the overland conveyor.
The primary crushers will be located close to the Ferrobamba
Pit, a relatively short haul distance for mine trucks.
The apron feeders, one under each primary crusher will discharge
onto a sacrificial belt provided with a weight scale to
measure crusher product tonnage. A tramp iron magnet is located
in the discharge end of each apron feeder and metal detector in the
sacrificial conveyor as a first stage tramp metal protection
system. The sacrificial belt conveyor will discharge onto the
overland conveyor No. 1 that in turn feeds overland conveyor No. 2
that then feeds the coarse ore stockpile at the
concentrator.
One electrical room is provided for the primary crusher.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-7 of 2-72
Dust suppression at the dump pocket and extraction systems will
be provided at various transfer points. A hydraulic rock
breaker will be installed in each primary crusher dump pocket to
clear crusher feed blockages caused by oversized rocks.
The primary crushers are serviced by one primary crusher bridge
crane with a 110/25 ton capacity, 15 m span, 70 m runway length, 42
m hook lift and a trolley bridge speed of 25/30 mpm.
A local primary crusher station office and control room will be
provided.
One of the crushers will be relocated close to Chalcobamba pit
before the pit. (Information only)
The substation for the mine and the primary crusher will be
located at 3,834 meters and includes a 33 kV GIS made up of two bay
feeders for the incoming 33 kV transmission lines and
seven outgoing bay feeders for power transformers. It includes
the associated prefabricated building.
Area lighting and lightning protection
Facility 0220 Coarse Ore Conveying Las Bambas has a two (2)
flight coarse ore (overland) conveyor
system designed to transfer crushed ore to the coarse ore
stockpile. Crushed ore from the apron feeder beneath each
primary crusher surge pocket feeds onto the sacrificial conveyor
belt which in turn feeds Fuerabamba overland
conveyor No 1. Fuerabamba No. 1 is a 1 830 mm (72) wide x
approx. 2,608 m long, (223 m height difference). It has variable
slopes along its length, most of which fall between 11.94% and
5.42%. . This conveyor is used to transport ore from the crusher
station to the transfer station where ore is
transferred to Fuerabamba overland conveyor No 2.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-8 of 2-72
Fuerabamba No 2 is an 1830 mm (72) wide x approx. 2,729 m long
overland conveyor (approx. 229 m height differences) which is used
to transport ore from the transfer station to the
coarse ore stockpile. Both overland conveyors have a 9 400 tph
maximum wet capacity and maximum speed of 6.5 m/s. An electrical
room is provided for each conveyor.
Area lighting and lightning protection
Facility 0230 Coarse Ore Storage/Stockpile Coarse ore from the
overland conveyor is discharged onto the
coarse ore stockpile. The coarse ore stockpile has a live
capacity of approximately 105,000 tons and a total capacity of
555,000 tons. The live capacity represents the portion of the ore
in the stockpile that will flow by gravity into the reclaim
hoppers below the pile. The dead portion of the pile will be
available for periods when the overland conveyor cannot deliver ore
to the concentrator either because it is inoperative or when there
is a problem in the mine or at primary crusher
station. The dead portion will be moved to the reclaim feeder
feed chutes using bulldozers. The plant will normally operate
from live capacity ore only.
The conical coarse ore stockpile at Las Bambas will not be
covered.
Facility 0240 Coarse Ore Reclaim The coarse ore reclaim system
will consist of two parallel lines
of four (4) in line (one per grinding line) variable speed 1,524
mm (60 inch) x 9.35 m long, 1 279 tph maximum wet capacity apron
feeders to withdraw material from the stockpile and deliver it to
the SAG mill feed conveyor. Three feeders are capable of achieving
design throughput of 70 000 tpd per line with the fourth feeder
available for maintenance. Each grinding
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-9 of 2-72
line will be fed using a 1,829 mm (72 inch) x 274 m , 3 268 tph
of fresh ore and a lift of 6.9 m, SAG mill feed conveyor. The apron
feeders are located directly above and in line with
the SAG mill feed conveyors.
Crushed pebbles from the pebble crusher circuit as described
on Facility 0320 are returned to the SAG mill feed conveyor
after the weigh scale. Grinding media from SAG mill ball feeder is
added to the SAG mill feed conveyor after the weigh
scale. The SAG mill feed conveyors will be an adjustable speed
belt (maximum speed 3.5 m/sec) with in-weight scale incorporated to
allow for automated control of the variable speed feed rate.
One electrical room is provided for the coarse ore reclaim.
Area lighting and lightning protection
2.2.3 Facility 0300 Concentrator
Facility 0310 Grinding The grinding circuit consists of two 12.2
m (40 ft.) diameter x
6.7 m (22 ft.) effective grinding length (EGL) semi-autogenous
grinding (SAG) mills, with each mill driven by a 24,000 kW gearless
drive, and two 7.92 m (26 ft.) diameter x 12.2 m (40 ft.) (EGL)
long ball mills, each powered by an 16 400 kW gearless drive. Space
has been allowed for the installation of two future ball mills of
the same size.
Each SAG mill feed conveyor discharges into the retractable
SAG mill feed chute where process water, lime and collector are
added. The SAG mill discharges through a short trommel screen to a
double deck vibrating screen. A roll in/roll out standby vibrating
screen is provided for quick change-out to minimize plant downtime
due to screen maintenance requirements. Wash water will be applied
to both the trommel
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-10 of 2-72
and vibrating screen to clean pebbles delivered to the
crushing
circuit. The washed pebbles from the vibrating screen fall onto
the first of two pebble transfer conveyors, which transfer
pebbles to the pebble stockpile.
The undersize from the SAG mill discharge trommel and
vibrating screen flows by launder to the cyclone feed sump where
it is combined with the ball mill discharge. Four operating cyclone
feed pumps will be used to feed four
operating cyclone clusters, two for each ball mill comprised of
12 (10 op., 2 stand by) - 838 mm ( 33 inches) diameter
hydrocyclones (plus one output for sampling system and one blind
flange per cluster). The sump will be elevated, with an automated
dump valve which will automatically open on plant
power outage to eliminate the settling of solids. The cyclone
feed pumps are fitted with variable speed drives to control the
level of the pulp with sump dilution water used to control pulp
density and cyclone distribution head pressure. The sump level
is controlled with the quantity of operatives cyclones and the
density of pulp in sump is adjusted with process water.
The underflow from each cyclone cluster flows by gravity
launder to the ball mill feed chutes. At the feed chute, milk of
lime and water are added to the feed. Also, at this point,
additional balls can be added as required. The layout allows for
crushed pebbles to be added here as an option if so decided in the
future.
The ball mill discharge flows through a magnetic trommel to
remove worn or broken balls and then to the cyclone feed sump by
launders.
Overflow from the cyclone clusters passes through cyclone
overflow collection boxes, a static screen trap to remove
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-11 of 2-72
oversize material, and two energy dispenser boxes in series
per
line before reaching the samplers.
The floors in the grinding building are sloped to direct
spillage
within the grinding area to a central collection channel through
which the spillage water and fines flow by gravity to a settling
pond outside of the building to avoid build-up of water within the
building. Spillage solids are cleared by mechanical front end
loader.
SAG mill grinding balls are discharged by transport trucks into
the SAG mill ball storage/addition bin. From the storage bins,
the balls are fed individually onto the SAG mill feed conveyor
via a fixed speed rotary drum feeder.
Ball mill grinding balls are discharged from transport trucks
into the ball storage bin. The operator in the control room or
in
the field will enter the weight of balls to be added to a
specific mill. Balls are fed from the ball storage bin onto the
high lift
ball conveyor using a fixed speed rotary drum feeder. The high
lift ball conveyor discharges onto the ball transfer conveyor, then
onto the feed belt to the mill. Diverter gates are used to divert
the grinding balls from this conveyor into the appropriate
ball mill.
Power to the grinding building is provided through in situ
electrical rooms installed inside the building. For the SAG mill
area, there are three electrical rooms: two for
cycloconverters and one for auxiliary equipment. Additionally
there are six (6) oil immersed transformers for cycloconverters of
the building. Similar for the ball mill area, there are three
electrical rooms: two for cycloconverters and one for auxiliary
equipment. Six (6) silicon oil cycloconverters are located inside
of the building.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-12 of 2-72
Facility 0320 Oversize Crushing Pebbles (+13 mm) are separated
from the SAG mill discharge
using a 6.4 m diameter by 4.0 m long trommel and a double deck
3.7 m x 7.3 m long vibrating screen and conveyed to a pebble
crushing facility comprised of a 1,750 t live capacity stockpile,
three belt feeder/conveyors each of which feeds one of the three,
750 kW short-head cone crushers.
SAG mill oversize pebbles are discharged from the vibrating
screen onto the pebble conveyor system. Two weigh scales are used
on the first belt conveyor to measure the pebble production rate
from the SAG mill. Two belt magnets are
installed along the length of the first pebble conveyor. A third
magnet is located at the discharge end of the conveyor. A
second transfer conveyor discharges onto an open stockpile.
Three pebble crusher feed conveyors are fed from the
stockpile
using Mexican hat (Adjustable opening) feeders. Each pebble
crusher feed conveyor has a metal detector at the discharge end of
the conveyor which will activate a bypass chute around the pebble
crusher to divert tramp metal away from the pebble crusher product
conveyor.
Three pebble crushers, Type MP 1000, are fed pebbles by variable
speed feed conveyors. The pebble crusher feed box level will be
used to control the feed rate to the crushers to
ensure that they operate choke fed at all times. Product from
the pebble crushers falls onto the pebble crusher product
conveyors which direct the material to a transfer tower N 2
hopper that distributes the crushed pebbles to two SAG milling
circuits.
One electrical room is provided for the pebble crushing
facility.
Area lighting and lightning protection
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-13 of 2-72
Facility 0330 Flotation and Regrinding Each cyclone overflow
stream flows through a static tramp
screen prior to the static sampler, fitted with sample cutters
to
obtain individual stream samples for size analysis before being
combined to generate a flotation feed sample with suitable
automation to allow for the generation of composite shift
samples for chemical analysis, and also to feed an on-stream
analyzer for on line reporting of solids assays.
A two (2) way top fed gravity type distributor is used to feed
the first rougher cell in each of the four rows of rougher
scavenger flotation cells.
A total of twenty eight (28) 257 m3 rougher and scavenger
flotation cells are provided in four (4) rows of seven (7) cells.
The first two cells in each row of cells are dedicated rougher
flotation cells, the third and fourth cell in each row can be
used
as either a rougher or a scavenger cell and the remaining three
cells in each row as scavenger cells. All cells are self-aspirated
flotation cells, each driven by a 300 kW motor.
Rougher feed can be directed to feed either the first or
second
cell in each row of cells to allow for operation of the row
of
cells while taking the first cell out of operation for
maintenance. The design allows for by pass lines to be installed
around each cell when a cell needs to be taken off line
for maintenance.
The rougher and rougher-scavenger circuit produces two
separate concentrates. A relatively high grade well liberated
rougher concentrate is expected to be collected from the first two
cells (rougher concentrate) and a lower grade scavenger concentrate
(rougher-scavenger) from the following five cells. The individual
rougher and rougher-scavenger concentrate
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-14 of 2-72
streams will be collected and fed to two separate
concentrate
collection tanks.
The rougher concentrate from each row of cells is kept
separate
and flows by gravity to the rougher regrind feed tank of 457 m3
of capacity (with agitator). Milk of lime can be added to this
sump. . The combined rougher concentrate is pumped to the rougher
concentrate regrind cyclone cluster.
The underflow from the rougher concentrate regrind cyclone
cluster flows by gravity to the regrind mill feed sump and is
pumped into the rougher concentrate regrind mill by variable
speed feed pumps. The rougher concentrate regrinding circuit
includes one open circuit 1,500 kW, Model M3000 ISA mill where
concentrates are reground to target a nominal P80 of 65
micrometers. This collection tank is sized to accommodate the surge
in concentrate production rate via a relatively large pulp
residence time of 20 minutes. The product from the rougher
concentrate regrind mill flows into the rougher concentrate
regrind mill product sump where it is combined with the
rougher concentrate regrind cyclone overflow stream. From here
the product is pumped to the second cleaner flotation cells
by the variable speed drive rougher concentrate regrind product
pumps
The rougher - scavenger concentrates from each row of cells
are also kept separate and flow by gravity to the rougher
scavenger regrind feed tank of 457 m3 of capacity (with agitator).
This collection tank is also sized to accommodate a surging
concentrate production rate via a relatively large pulp residence
time of 9 minutes. Milk of lime can be added to this tank. The
rougher - scavenger concentrate is pumped to one of the two (2)
rougher - scavenger concentrate regrind cyclone clusters.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-15 of 2-72
The underflow from the rougher-scavenger concentrate regrind
cyclone clusters flows by gravity to the regrind mill feed sump
and is pumped into one of the two (2) scavenger concentrate
regrind mills by the variable speed feed pumps. The scavenger
concentrate regrinding circuit includes two open circuit 1,500 kW,
Model M3,000 ISA mills where concentrates are reground to a target
nominal P80 of 45 micrometers. The product from the rougher -
scavenger concentrate regrind mills flows into the
rougher - scavenger concentrate regrind mill product sump where
it is combined with the rougher -scavenger concentrate
regrind cyclone overflow stream. From here the product is pumped
to the first cleaner flotation cells by the variable speed drive
scavenger concentrate regrind product pumps.
The tailings from the last rougher -scavenger cell in each
row
flows through a static sampler to collect a suitable sample to
be directed via gravity to a Multi Stream Analyzer (MSA) located at
the end of the row of flotation cells. Then the tailings flow by
gravity to the tailings thickener area.
A regrind area spillage pump will be used to collect spillages
and return this to the rougher-scavenger regrind mill feed
sump.
A regrind area spillage pump will be used to collect local area
rougher and rougherscavenger regrind spillages and return this
to the emergency pond or a rougherscavenger regrind feed
tank.
The first cleaner flotation circuit consists of five (5) 160 m3
forced air flotation cells arranged in a single row. Level control
is provided for each cell. Each cell is driven by a 150 kW motor.
The first cleaner cells are fed by the rougher-scavenger
concentrate regrind product stream, cleaner-scavenger
concentrate and second cleaner flotation tailings streams. The
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-16 of 2-72
concentrate from the first cleaner cells flows by gravity to
the
first cleaner concentrate sump and pumped by the variable speed
first cleaner concentrate transfer pumps to the second
cleaner flotation cells. A pressure pipe sampler is installed in
the pump discharge line to obtain a sample stream for analysis in
the cleaner circuit MSA. The tailings from the first cleaner cells
will flow through a pressure pipe sampler and then into
the feedbox of the cleaner scavenger cells.
The cleaner-scavenger flotation cells consist of five (5) 160 m3
forced air flotation cells arranged in a single row. Level
control
is provided for each cell. Each cell is driven by a 150 kW
motor. The cleaner-scavenger cells are fed directly from the last
cell of the first cleaner cells. Concentrate from the cleaner-
scavenger cells flows by gravity to the cleaner-scavenger
concentrate sump and is pumped to the first cleaner flotation cells
by the variable speed cleaner-scavenger concentrate transfer pump.
A pressure pipe sampler will be installed in the
discharge line and used to obtain a sample stream to be sent to
the cleaner circuit MSA. The tailings from the last of the
cleaner-scavenger cells flow through a static sampler which
is
used to obtain shift and special samples, and also on line
sample for analysis by in the rougher area in-stream analyzer.
The second cleaner flotation cells consist of six (6) 100 m3
forced air flotation cells arranged in a single row. Level control
is provided for each cell. Each cell is driven by a 110 kW motor.
The second cleaner cells are fed by the first cleaner concentrate
stream, reground rougher concentrate and the third
cleaner tails. Second cleaner concentrate flows by gravity to
the second cleaner concentrate sump and pumped to the third
cleaner by the variable speed second cleaner concentrate
transfer pumps. The tailings from the second cleaners flow by
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-17 of 2-72
gravity to the second cleaner tailings transfer sump and
pumped to the first cleaner flotation feed sump by the variable
speed second cleaner tailings transfer pumps.
The third cleaner consist of six (6) 70 m3 forced air flotation
cells arranged in a single row. Level control is provided for each
cell. Each cell is driven by a 90 kW motor. The third cleaner
concentrate flows by gravity to the 60 m diameter concentrate
thickener. A gravity sampler will be used to obtain
a concentrate sample from the concentrate launder through an in
line probe analyzer. The tailings from the third cleaner flow
by gravity into the second cleaner flotation cell feed box.
Tailings from rougher-scavenger flotation cells are combined
with the tailings from the cleaner-scavengers and flow in a
concrete launder to the tailings thickeners. The samples from each
tailings sampler passes through MSA and its combined reject
produces the final tailings sample.
Three electrical rooms are provided for the flotation and
regrinding facilities.
Area lighting and lightning protection.
Facility 0340 Concentrate Thickening Concentrate from the third
cleaner flotation cells flows by
gravity to the feed box of the 60 m diameter concentrate
thickener. Concentrate thickener overflow flows by gravity to the
reclaim water tank. Thickener underflow at 62% solids by mass is
pumped by the variable speed concentrate thickener underflow pumps
to the concentrate storage tanks.
There is one electrical room dedicated to the concentrate
thickener.
Area lighting and lightning protection
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-18 of 2-72
Facility 0370 Molybdenum Plant The Molybdenum plant, will have a
daily capacity to receive and treat
bulk Cu-Mo concentrate from Las Bambas at a feed rate of
approximately 2 835 tons per day to produce 2 798 tons of copper
concentrate and 37 tons of molybdenum concentrate. The Moly and
Filter plant includes three enclosed buildings, i.e. moly
filter/dryer building, CU-Concentrate filter building and filter
cake storage and load out building. The facility includes:
The concentrate is pumped to the molybdenum separation plant
that is comprised of roughing, first cleaning, cleaning
scavenger followed by two stages of column cell cleaning and
regrinding, producing a final concentrate containing 50 percent
molybdenum. The plan includes a scrubber for toxic gas
cleaning.
Final molybdenum concentrate is discharged to a 17 m diameter
thickener ahead of pressure filtration and drying. The dryer is
equipped with a scrubber for particulate removal.
Final molybdenum concentrate will be stored in a 20 ton surge
bin prior to packaging in one ton bags for shipment.
One electrical room is included.
The Moly plant area electrical room, 5.8m wide X 89m long is
located outside of the flotation building.
Area lighting and lightning protection
Facility 0390 Other Facilities Facility 0391 Lime Handling and
Preparation The lime preparation plant is mainly fed by a hydrated
lime
slurry 1 000 ton storage silo with storage capacity for 11 days.
Preparation concentration varies; lower than 20% in grinding
and no less than 7% solids in flotation and thickening,
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-19 of 2-72
generating two dependent operational requirements determined
by the distribution point: an 80 m3 tank for preparation and two
420 m3 distribution tanks. The lime slurry preparation plant
operation has been designed to operate in batch mode, five (5)
preparation cycles per day.
One electrical room is provided
Facility 0392 Other Reagents The liquid reagents in the Las
Bambas area (fuel oil, secondary
collector, and frother) are brought by tanker trucks to each
storage tank with 5, 30 and 60 m3 capacities. All these reagents
are connected to dosing pumps for feeding tap points. Discharge
from tanker trucks is done at an unloading station
through independent pumps associated to each storage tank. Fuel
oil discharge will be done by the truck pumps.
Flocculant:
The preparation is made in two (2) separate systems. The first
system is associated with the tailings thickeners and is prepared
with fresh water and stored at 0.3% to be distributed in diluted
form at 0.03% in weight. The second system is associated with the
bulk concentrate and copper concentrate thickeners and is
prepared with fresh water and stored at 0.3% to be distributed
in diluted form at 0.01% in weight. Reagent reception shall be
at storages designed for seven (7) and four (4) day production
in 25 kg or one (1) ton bags. The preparation and storage tanks
will be 10 and 600 m3 for concentrates and tailings thickening,
while the distribution tank capacities are 25 and 1 000 m3.
Primary Collector:
The Las Bambas design includes a 30 m3 preparation tank with an
agitator, and a 60 m3 daily and distribution storage tank. A
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-20 of 2-72
56 t storage capacity warehouse receives bags of one (1) t. The
preparation of this reagent requires six (6) maxi-sacs per day in
nominal conditions. Fresh water is added to achieve a 10%
solid dilution in weight.
Frother (MIBC):
Frother is delivered by 25 ton truck and stored in a 60 m3
capacity storage tank. The frother is pumped to a rougher flotation
circuit, first and second cleaner stage by positive
displacement dosification.
Secondary Collector
Alongside the MIBC Frother system, there is a Spare Reagent
System of almost identical design, with a 30 m3 capacity
storage tank instead the 60 m3 capacity storage tank in the
Frother system. This system could be used as a backup to the
collector or can be used to prepare and distribute test
reagents.
All tanks are installed in a containment area that can
retain
emergency and normal spills up to 125% of the total tank
capacity.
Preparation/storage tank spills are handled through vertical
well pumps into a storage tank.
Area 0393 Air Compressor Plant The compressed air plant which is
located at the concentrator
area, supplies plant and instrument compressed air to the
process facilities. The primary crusher area and the mine
ancillary facilities will be installed with local compressed air
systems.
All Area 300 Facilities include lighting and lightning
protection
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-21 of 2-72
2.2.4 Facility 0400 Concentrate Handling and Filter (Dewatering)
Plant
Facility 0410 Concentrate Receiving
Following molybdenum separation, the final copper
concentrate flows to a 60 m diameter final copper concentrate
thickener through a feed box.
Thickened copper concentrate is pumped to the filter feed
tank.
Overflow water is collected in a tank and partly returned to
thickeners as spray water and the balance of the water is pumped
to the tailings thickeners.
A flocculants plant is provided for the thickener.
An emergency pond of 18 000 m3 capacity is provided to handle
concentrate in case of thickener failure.
Facility 0420 Dewatering/Filter Plant Thickened copper
concentrate is stored in one 1 084 m3 copper
concentrate filter feed tank located in the Filter Plant.
The
concentrate is pumped from the tank to three pressure filters,
each with a capacity of 62.07 dtph, via a common circulating loop.
The filter plant building could be extended in the future to
accommodate the four future filters.
Three oil free type air compressors, (2 working and 1 stand by),
are used for the air filter supply. The air supply system is
also
equipped with three, (3), booster air compressors for membrane
compression.
Filter cake from each filter drops directly onto a dedicated
belt
conveyor with variable speed, which then feeds the product onto
a common belt conveyor. This belt conveyor transports filtered
concentrate to the stockpile building.
There is one electrical room and one control room provided.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-22 of 2-72
Area lighting and lightning protection
Facility 0430 Filter Cake Storage and Load-out The copper
concentrate belt conveyor conveys the concentrate
from the filter plant to the stockpile building. This building
has
a total capacity of approximately 40 000 t, corresponding to two
(2) weeks of operation. The concentrate storage building is a
covered structure designed to store up to 40 000 t of concentrate
at approximately 9% moisture. The discharge end of the concentrate
stockpile feed conveyor is equipped with belt plows to allow for
separate storage of different quality
concentrates if required. A belt scale is installed on the
concentrate stockpile feed conveyor to provide for
metallurgical accounting. Grab samples for moisture content are
to be taken from the stockpile feed conveyor.
Concentrate in the stockpile building will be transferred by
two, (2), front-end loaders which will load trucks directly. A
truck scale will be provided inside the building. A truck wash
station will be provided adjacent to the building. The system is
also provided with two (2) dust collector system above the hoppers
which in turn would help in maintaining a slight negative
pressure inside the stockpile building.
Facility 0490 Miscellaneous Concentrate Handling Facilities
These facilities were cancelled. All support facilities for the
molybdenum and concentrate handling facilities were transferred
to facility 0370.
All Area 400 Facilities include lighting and lightning
protection
2.2.5 Facility 0500 Tailings Management
Facility 0510 Tailings Thickening Final tailings from the
rougher scavenger and the cleaner
scavenger circuits will flow by gravity to two (2) 80 m
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-23 of 2-72
diameter thickeners to produce tailings slurry of 62 % solids by
weight that will flow to the tailings storage area. The
overflow
is collected in a concrete tank and pumped to process water
ponds. Flocculant dilution by means of 5 centrifugal pumps,
(four operating and one stand by), 3 900 m3/h capacity each.
Each tailing thickener is provided with one recirculation pump
for start- up and density control.
There is one electrical room dedicated to the tailings
thickeners.
Lighting and lightning protection
Facility 0520 Tailings Pumping System (Owner) A pumping system
will be required after year five.
Facility 0530 Tailings Distribution The tailings slurry will
flow to the tailings area by gravity until year 5; centrifugal
pumping will be required thereafter. No tailings pumping is
included in Bechtel scope.
Facility 0540 Tailings Impoundment (Owner) Area 0541 Tailings
dam and impoundment No description available from Glencore at this
time
Area 0544 Drainage system and monitoring wells
No description available from Glencore at this time
Area 0545 Non-contact water management (Contour Channel)
This water system includes three diversion channels which
collect rain and run-off water from hillsides above the plant site
and divert the water around the plant
Channels 1, 2, and 3 divert water around the plant and the
tailings impoundment
Channels 4 and 5, water diversion around the contact water
storage area, have been deleted by Glencore
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-24 of 2-72
Facility 0550 Reclaim Water System Area 0551 Reclaim Water
System (Barge Pumps)
Reclaim water is reclaimed from the tailings impoundment
area
using four, (4), barge mounted vertical turbine type pumps, with
a total capacity of 4 500 m3/h.
One mobile substation is provided for the reclaim water barge
pump system.
Area 0552 Reclaim Water System The recovered water from barge
pumps is carried to a lift
pumping station which includes four (4) horizontal centrifugal
pumps and a tank. This tank receives also the waters from the
booster station that carries the water from the contacted water
settling pond. All this system is designed for 4,500 m3/h.
From the lift pumping station, the waters are pumped to an
intermediate booster station which pumps to the process water
ponds. This system is designed for 4,500 m3/h.
Three electrical rooms are provided for the reclaim water
system.
Lighting and lightning protection
Area 0553 Contact Water Settling Pond (Owner Design) The design
of the contact water settling pond will be the
responsibility of Owner. Construction will be through open
bid
and managed by Bechtel.
The volume of the settling pond will be determined by
Glencore.
No description available from Glencore at this time
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-25 of 2-72
2.2.6 Facility 0800 Ancillary Facilities
Facility 0810 Concentrator Office Building The Concentrator
Office Building, (1,515 m2), will be located at the
concentrator area and will include a kitchen (Dining room area,
not a working kitchen) and casino (497 m2). This facility will be
used by Bechtel and Owner during the construction as temporary
facilities and after project completion will be used by Owner
Southern Peru Operations (Concentrator Area) as a permanent
facility.
Facility 0820 Shop and Warehouse
The mechanical and electrical shop (1512 m2) and the
concentrator warehouse (2880 m2) will be two separate steel framed
structures.
The mechanical and electrical maintenance shop area (1,512 m2)
will provide facilities for the maintenance of the concentrator
mechanical and electrical equipment.
- The building is a steel framed structure with metal siding and
one 15t overhead bridge crane.
- This building is composed of two areas: one electrical and
mechanical workshop. The second area has two floors with workshops
on the first floor and offices and restrooms on the second
floor.
- The types of components that will be serviced by the
mechanical area include pumps, piping, cyclones, agitator
mechanisms and gear assemblies etc.
- The types of components that will be serviced by the
electrical maintenance area include motors, transformers and
electrical assemblies etc.
- There will be a 1,000 m2 fenced outdoor storage yard.
The Concentrator Warehouse (2,880 m2) will provide facilities
for the concentrator.
The area is a steel framed structure with metal siding and
roofing.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-26 of 2-72
Facility 0830 Laboratory (Split Scope) Metallurgical sample
preparation, testing and assaying and
environmental analyses will be carried out in laboratory
facilities located at the concentrator.
This facility includes a 770 m2 steel building containing
the
following: Sample reception area, Metallurgical lab, Chemical
lab, Environmental area, Offices, and Warehouse area.
Laboratory equipment to be provided by Owner Operations
group.
Facility 0890 Other Ancillary Buildings Facility 0891
Concentrator Offices These facilities were cancelled and were
replaced by the
Concentrator Office Building. See facility 0810.
Facility 0892 Light Vehicle Shop (Owner Scope; Deferred) Owner
scope, this has been deferred
Facility 0893 Ambulance / Fire Station / Hospital / Clinic This
Facility (The Ambulance, Fire station and clinic) (564 m2)
was relocated to the Main Construction Camp. This facility
will
be used by Bechtel and Owner during the project and after
project completion will be used by Owner Southern Peru
Operations.
Facility 0894 Guard House The site area access control gatehouse
is located on the
Fuerabamba bypass road and is a modular prefabricated building
with pre-formed and pre-painted steel siding of about 255m2, manual
entrance and exit gates. The gate house includes:
Control and access room with computer network access to the
overall facility security control and fire alarm system
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-27 of 2-72
2 washrooms (Male and female)
1 entrance indoctrination room
A second access control gatehouse will be provided along the
Chalhuahuacho road. This gate house is a modular prefabricated
building with pre-formed and pre-painted steel siding. The gate
house has an area of about 30 m2, manual
entrance and exit gates. The gate house includes the
following:
Control and access room with computer network access to the
overall facility security control and fire alarm system
Two (2 ) washrooms (Male and Female)
One (1) lunch room for four (4) personnel
2.2.7 Facility 0900 Site Development and Yard Utilities
Facility 0910 Site Development & Plant Roads Facility 0911
Site Development There are no existing industrial facilities at or
near the site that
can be used to support the development or operation of the
project. The project will include all necessary process facilities,
utilities and infrastructure required for a fully operational mine
and mineral processing plant.
Site development will include mine facilities, process
facilities, ancillary facilities, on-site infrastructure and
off-site facilities associated with the Las Bambas project.
Facility 0912 Plant Roads Plant area roads include:
The overland conveyor road from the coarse ore storage
facility
to the Ferrobamba primary crusher. This is the plants primary
access road on the south side of the plant.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-28 of 2-72
Dirt roads will be used for Plant site traffic. The basic
criteria include:
For Principal Roads:
- Ten (10) meter width (two lane traffic)
- One (1) meter minimum shoulder each side
- Maximum slope of 8 %
For Secondary roads:
- Seven (7) meter width (two lane traffic)
- One (1) meter minimum shoulder each side
- Maximum slope of 10 %
For Maintenance Roads:
- Six (6) meter width (single lane traffic)
- One (1) meter minimum shoulder
- Maximum slope of 12%
For Principal, Secondary and Maintenance Roads:
- Maximum speed on any plant site road shall be 30 km per
hour
- Speed limits lower than 30 km will apply in areas of high
pedestrian traffic.
On single lane roads, direction of traffic will be determined by
the requirements of mine and plant operations. Driving direction on
two lane roads will be on the right-hand side
except within the mine area where the direction of travel will
be suitably signed and marked at crossover locations.
Facility 0920 Yard Utilities Facility 0921 Water Process Water
Storage and Distribution
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-29 of 2-72
The process water distribution system for the concentrator site
and mine area will be fed from two process water ponds each
holding 25 000 m3.
One electrical room is provided.
The process water ponds are fed with water reclaimed from:
Tailings Thickener overflows.
Tailings Dam.
Contact water settling pond.
The plant is supplied by a network of buried pipes and
aboveground pipes inside the concentrator battery limits. The
most significant process water users are the cyclone feed pump
boxes, regrind pumps, cleaner flotation circuit, and lime slurry
and reagent preparation.
Fresh Water Storage and Distribution
The fresh water storage tank has been situated above the
plant
site to provide the required pressure to supply fire water and
potable water by gravity. Fresh water will be distributed via a
network of buried pipes and above ground pipes within the
battery limits of the concentrator itself.
The most significant uses of freshwater are for seal water
for
the slurry pumps, dust suppression, reagent area make-up,
cooling systems, cleaner flotation and fire water.
Fire Water
The concentrator area fire water system is comprised of a common
fire and fresh water tank and an underground piping system. All the
facilities that require protection water are fed by gravity except
the sprinkler system of the stockpile conveyor,
the lime preparation plant tank and the reagent storage area.
All
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-30 of 2-72
of these facilities require rotary pumps (diesel, and jockey
pump) for system pressurization, hydrants, and sprinklers.
The design, materials, and installation of the underground
network and automatic fire protection systems, including
sprinklers and hose stations, will be in accordance with the
Factory Mutual (FM) engineering standards. Material and equipment
must be approved by FM and/or UL.
The construction camps, mine area fuel station, primary
crusher
(Bechtel scope), and truck shop (Owner) will have a separate
standalone system for fire protection.
Potable Water Treatment, Storage and Distribution
Potable water will be supplied from two new potable water
treatment plants. One for the concentrator and one for the Main
Construction Camp.
The mine and primary crusher will be fed by water truck.
Facility 0922 Sewer Sewage Treatment and Handling
Sewage generated during the project operation will be treated in
two sewage treatment plants. Each plant will be purchased as
modular system. The design of the plants will be capable of
accommodating the required capacity for the Las Bambas concentrator
area and MCC camp.
The sewage treatment plants will produce a disinfected waste
stream (or treated effluent) free from odors and/or foams. The
treated waste water or effluent from the plants will be stored in
an adjacent effluent holding pond with a membrane liner and will be
used for dust control (using tank trucks), as required. Excess
treated waste will be fed to filter fields located within
the established Las Bambas mine waste area.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-31 of 2-72
Storm Water
Storm water runoff collection channels and buried piping are
required to protect the facilities from rainfall runoff.
Storm water captured by the contour channels around the
concentrator area will be discharged into the tailings dam and
reclaimed.
Storm water captured at the primary crusher area will be
discharged into the contact water settling pond.
Facility 0925 Light Fuel Oil (Owner Scope) Light diesel fuel
storage and distribution services for the Las
Bambas Project will be located at the Main Construction
Camp.
Bechtel will perform the earthworks.
Facility 0928 Environmental Monitoring (Owner Scope) All
environmental monitoring facilities will be engineered,
procured and constructed by Owner Operations.
Facility 0930 Yard Electrical Facility 0931 Main Substation The
Las Bambas substation will be located at an elevation of
approximately 4,300 meters and includes a 220 kV GIS with
associated building, 3 x 220 - 33 kV 75/100/125 MVA ONAN/ONAF/ONAF
65 C rise power transformers, yard, 33 kV GIS and associated
prefabricated electrical room, control room, auxiliary services,
one emergency generator of 2 MW,
two transformers of 20 MVA and two synchronous condensers of 20
MVA, and harmonic filters
The main 220 kV gas insulated switchgear (GIS) will have six (6)
bays. Each bay will include one circuit breaker; disconnect switch,
current transformer, control and protection panels, etc.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-32 of 2-72
The main 33 kV gas insulated switchgear (GIS) will have three
(3) incoming circuit breakers, three busbars and twenty six, (26),
breakers for secondary distribution of electric power to the
concentrator facilities.
The main step-down transformers will provide power to the
concentrator and local infrastructure as well as supply the
mine
and mine facilities, primary crusher, overland conveyor, fresh
water system, and tailings disposal system.
A SCADA system will be installed in the substation control room
to monitor and control of the electrical system, including the 220,
33, 23, 4.16 and 0.48 kV breakers.
Area 0932 Yard Distribution Power distribution includes 33 kV
overhead distribution lines
and 33 kV underground cables from the Las Bambas main
substation. Underground cable routing in duct banks will be used
to feed the following areas: coarse ore reclaim, pebbles grinding,
grinding, flotation and regrinding, concentrate
thickening, tailings thickening and ancillary facilities.
Overhead distribution lines will be used to feed the following
areas: mine area, mine ancillary facilities, primary
crusher,
overland conveyor, fresh water supply system, reclaimed water
system, and MCC camp.
Connection from primary crusher substation to the mine loop
(22.9kV) first pole will be done with duct banks.
Facility 0933 Communications, Data Highway, Fire Detection and
Alarm Communications
Every system uses the Fiber Optic (FO) media as the main path to
transmit data and to connect to different nodes. A fiber optic back
bone will give service to control system, SCADA system, fire
detection systems, CCTV, analyzers, IP phone and LAN.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-33 of 2-72
The media for the Local Area Network (LAN) for Las Bambas will
have a design based on FO back bone. Offices and others
ancillary facilities will be covered by structured cabling.
(Bechtel Scope)
Owner will provide the LAN servers and computers, IP phone
severs and phones, vigilance cameras, monitors and video
servers.
Data highway
A Fiber optic cable, with 48 fibers, will be installed between
the main locations of the plant in a star topology. In every
location there will be a communication node where the different
systems can access and use the FO loop.
The intent of the design is to have a, redundant, high speed
communication highway covering the whole plant.
Fire Detection and Alarm
The fire detection and alarm system consists of a network of
local, interconnected panels that have been ordered
hierarchically for managing alarms.
The fire alarm system consists of smoke detectors located in
buildings, offices, control rooms, communications rooms and
electrical rooms. Sirens and flashing lights will be installed
in
new buildings to warn plant personnel of any alarm activated on
the fire panel.
All alarm signals from any part of the project will be received
in the plant fire monitoring station for mitigation, control and
management.
The proposed detection system will be dedicated to the project
facilities.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-34 of 2-72
2.2.8 Facility 2000 Off Site Facilities
Off-site ancillary facilities will be included in the project to
support the operation of the Las Bambas concentrator and tailings
storage facilities:
For facilities located at Molybdenum and Filter Plants see Area
0370.
2.2.9 Facility 2100 Infrastructure
Facility 2110 Access Roads The project included the following
site access construction
roads. For additional clarity the descriptions should be read
(note color scheme) in conjunction with the diagram shown in Figure
2-1.
Cusco to Chalhuahuacho (dark green), via Ccapacmarca, is an
existing road which will be upgraded as required. A 3.5 km bypass
to the Ccapacmarca town will be built with a 9 m wide platform to
allow the transportation of the heavy haul avoiding
the crossing through the town. From approx. 6 km east of
Chalhuahuacho to the plant site (red) a new main access road will
be constructed to provide access with the heavy haul to the
concentrator (Evitamiento Fuerabamba).
The section from Ccapacmarca Turnoff to Chalhuahuacho is an
existing road which will be upgraded as required and will also
serve as the heavy haul road. The width of platform is 10 m
(between km 142+000 and km 161+000) and 8.5 m (between km 142+000
and the Ccapacmarca Turnoff). Partial conservation works will be
performed between Quehuira (km 161+000) and Chalhuahuacho since
this part of the road will not be part of the heavy haul road.
Between KP 86 +590 and the Ccapacmarca Turnoff (light green),
the access road connects with the Cusco to Las Bambas
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-35 of 2-72
road. It will include approximately 46 km of existing road that
will require improvement for use by heavy haul traffic.
The section between Kp 86+590 and Velille (brown) is an upgrade
to an existing road which will provide access as well as heavy
haul. This road section will have a minimum of 9 m platform
width.
The section between Velille and Urinsaya (light brown) will be a
new road to provide access to the heavy haul road and between
Urinsaya and Coporaque will be an upgrade to an existing road. A 5
km bypass to the Velille town will be built with a 9 m wide
platform to allow the transportation of the heavy haul to avoid the
crossing through the town. In the
Velille area, three river crossings will be built. One to cross
the Velille river using culverts, and two for the Fauce river, one
using culvers and the other using a Bailey type bridge.
Fuerabamba By-pass road intersects with the Challhuahuacho
road approximately six kms east of Challhuahuacho and proceeds
to the north end of the Las Bambas plant site. This road is used as
the primary access into the plant for deliveries and the primary
egress from the plant with concentrate haul
trucks.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-36 of 2-72
Figure 2-1 Las Bambas Site Access Roads
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-37 of 2-72
Facility 2120 Power Supply (Owner Scope) Power required by the
Las Bambas Project will be supplied
from the existing 220 kV Cotaruse substation located in
Apurimac Department, approximately 320 km north of Arequipa.
Cotaruse Substation is operated by SEIN of Peru and is located
between Mantaro and Socabaya Substations. A 220 kV double-circuit
overhead line will be installed from
Cotaruse substation to the Las Bambas main substation located
next to the grinding facility.
Power supply required for the construction camps and offices is
7.5MW and will be supplied by diesel generators.
Facility 2130 Fresh Water Supply Facility 2131 Fresh Water
Intake (Owner Design) For the future mine at Las Bambas, it will be
necessary to have
a water source that can supply fresh water at a maximum rate
of
900 l/s to the Las Bambas Mine and Site. The main source will be
from the Challhuahuacho River.
A water intake will be located on the Challhuahuacho River to
act as the primary catchment for the fresh water system in
order
to guarantee a constant supply of fresh water.
A water intake consists of a 3m deep structure and
approximately 15 m in length.
Facility 2132 Pump Stations and Pipeline
Three stages of pumping and pipeline are required, to carry the
fresh water to the storage reservoir. The first pump station,
(EB1), has a concrete underground water storage tank with four
vertical turbine pumps. The second station, (EB2), has a steel
tank, which provides fresh/fire water to truck shop, and four
multistage horizontal centrifugal pumps. There is a branch line
off the fresh water pipeline between the second and third
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-38 of 2-72
stations, which is used to supply fresh/fire water to the
primary
crusher. The third station, (EB3) has a steel tank to provide
fresh/fire water to the main construction camp. This steel tank
also contains four multistage horizontal centrifugal pumps
to
provide fresh/fire water to the concentrator.
From the fresh water dam to the overland conveyor, the fresh
water pipeline goes in a platform that contains also a service
road, the concentrate pipeline (future), and in some areas three
construction water pipes.
In order to supply water to the concentrator from the pipeline,
a
branch pipe with a valve system is provided.
Three electrical rooms are provided.
Facility 2133 Fresh Water Reservoir (Owner Design)
A fresh water storage facility will be provided within
Fuerabamba mine area, in a reservoir formed behind the Chuspiri
dam in the Chuspiri basin. The selected site is located north of
projected tailing deposit and south of the future pit of
Chalcobamba. This system will operate as a supply source only for
dry seasons and will guarantee a constant supply of
fresh water.
The flow design rate will be of 800 l/s, greater than the
fresh
water demand of 738 l/s in an average year from
Challhuahuacho River. This design rate will provide sufficient
capacity to fill Chuspiri basin in the event of a dry year.
An electrical room is provided
Facility 2140 Communications (Owner) An off site communications
system for voice, data and internet
will be provided for Las Bambas similar to the system
already
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-39 of 2-72
in place at Tintaya. Design details of these systems will be
provided by Owner.
Facility 2150 Concentrate Transport (Owner Scope) During
operations, concentrate will be transported from the
project site to the port of Matarani via gondola trucks.
The gondola trucks will be unloaded at the Port of Matarani in
an area called Baha Islay, where new port facilities will be
built.
The transportation network has been sized to move up to 3400
tons per day based on the estimated Las Bambas production.
Facility 2160 Air Strip
Removed from project scope by MMG
Facility 2170 Nueva Fuerabamba (Owner Scope/Bechtel Scope) The
construction of a new town, Nueva Fuerabamba, and the relocation of
the existing Fuerabamba community which is currently located on the
site the Las Bambas Project Facilities.
The new town of Nueva Fuerabamba will be located about 15km
south of Las Bambas.
Demolition of existing community houses and buildings once the
community has relocated (Bechtel Scope)
Phase 1
Construction of the residential buildings, utilities,
infrastructure, and roadways (Owner Scope)
Phase 2
Owner will provide all Engineering. Bechtel to perform
Procurement, Construction and Management for the following
facilities:
Slaughterhouse
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-40 of 2-72
Bus Station
Israeli Church
Museum
Catholic Church
Artisanal Market
Main Square
Town Hall
Police Station
Market
Adventist Church
Phase 3 Owner will provide all Engineering.
Bechtel to perform Procurement, Construction and Management for
the following facilities:
Retirement Home
Owner to provide all Engineering, Procurement and Contract
Administration. Bechtel to provide Construction Management Support
as requested by Owner for the following facilities:
Soccer Field
Bull Ring
Horse Racetrack
Eco Park
Zona de Fabricas
2.2.10 Facility 2200 Port (Owner Scope and excluded from the
Definitive Estimate)
The Matarani port is located on the south-west coast of Peru.
The port is located within Islay Bay, approximately 120 km west of
Arequipa and 1 070 km South of Lima, Peru.
Approximate coordinates for the port are latitude: 16 59'
42.5''
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-41 of 2-72
south; longitude: 72 06' 13.2'' west. Cargo can be delivered to
the port by a modern highway, appropriate for the handling of heavy
load vehicles or by rail. Railway transportation services
to this port offers access to the interior of Peru, specifically
to
the cities of Arequipa, Puno and Cusco.
The port facilities being constructed in support of the Las
Bambas project are comprises of truck unloading, storage of the
copper concentrate, and reclaiming, handling and ship loading
of the copper concentrate.
Ships will be loaded using a single quadrant ship loader
together with the pipe belt conveyor. There will be one transfer
conveyor receiving concentrate from one of the two stockyard
conveyors via a transfer tower. The transfer conveyor will be a
pipe belt conveyor. A fixed length loading spout will be attached
at the end of the pipe belt conveyor boom via a hinge below the
ship loader conveyor head pulley. The ship loader
will load the vessel one hatch at a time.
The designed ship loader will be capable of:
Loading vessels ranging from 20 000 to 55 000 DWT (deadweight
tonnage).
Loading copper concentrate at a peak rate of 1 800 t/h.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-42 of 2-72
2.2.10 Facility 2300 Executive Camp
The executive camp was moved and all of its facilities were
relocated to the main construction camp, Refer to Facility
4511.
2.2.11 Facility 4000 Other Facilities / Tasks
Facility 4100 Construction Water During the construction phase,
a temporary Construction Water
System will be used to provide water to the construction
camps,
batch plant, and plant offices and for dust control.
The construction water system consist of:
Water intake that captures water from the
Fuerabamba River is conducted by gravity through a 20 HDPE
pipeline to a 5 000 m3 capacity accumulation water pond.
The accumulation water pond is protected with a
HDPE liner.
From the accumulation water pond using a barge
pumps system (2 in operations + 1 standby) that feeds a high
pressure centrifugal pumping station (2 in operations + 1 standby),
the water is pumped through a 10 carbon steel pipeline up to a tank
located at the intermediate pumping station. From the tank that
water is pumped through two 10 carbon steel pipeline up to a
4 000 m3 capacity distribution water pond located close to the
Chuspiri dam.
After the intermediate pumping station, one of the two 10 pipe
branches will feed the batch plant, and
the other will go to the XP Camp where the water will be treated
to make it potable.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-43 of 2-72
From Chuspiri dam, the water can be pumped to the 4000 m3 pond
to be used in the construction water
system during the dry season.
Two barges, each with two vertical pumps
having 75 m3/h of capacity, are located in the 5 000 m3 pond to
load water trucks.
Two 25 m3 tanks are fed from the well water overflow of the MC
Camp. These tanks are equipped
with a pumping system that will be used to load water
trucks.
As an alternative to the dewatering well system, (See Facility
0110), the water for the main construction camp could also be
provided through a branch pipe
from the main construction water pump system.
Facility 4510 The XP Camp The XP Camp will have a capacity for 1
500 beds in total and a
possible expansion to 1 800 beds.
The XP Camp site will include infrastructure and auxiliary
facilities such as: site access, catering and accommodation,
recreation facilities, administration offices, medical and
first
aid center, on/off site communication systems and offices for
300+ personnel.
The XP Camp will be located at the north access to the mine.
Facility 4511 The Main Construction Camp (MCC)
The main construction camp will have a capacity for 3,008
new
beds and 2656 beds relocated from Antapaccay. The camp will
include infrastructure for 7 258 people.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-44 of 2-72
The main construction camp site will include infrastructure and
auxiliary facilities such as: site access, catering and
accommodation, sewage water treatment plant, recreation
facilities, administration and construction offices (2,500 m2),
onsite clinic and fire station and on/off site communication
systems.
The Administration building has an area of 2,500 m2. This
facility will be used by Bechtel & Owner during the project and
after project completion will be used by Owner Southern Peru
Operations.
The main construction camp will be located near the transfer
station of the two overland conveyors, at an altitude ranging from
4,000 to 4,250 meters.
One electrical room is provided for the main construction
camp.
The main construction camp will be connected to permanent power,
but also has independent power generators located
throughout the camp, for backup power.
This camp will be partially re-furbished, as necessary, after
the
completion of construction to serve as the Las Bambas permanent
camp
2.3 Scope of Services
Bechtels scope of services associated with the scope of
facilities as setout in Section 2.2 will include detailed
engineering, procurement, construction and construction management
(EPC/CM) as appropriate for the Las Bambas Project. At the outset
of the Project, a Project Procedures Manual (PPM) will be prepared
to guide the execution of this plan and to facilitate the
interfaces between Bechtel, MMG, and Contractors' personnel
throughout the course of the Project. The following service
descriptions are supported by additional details delineated in
sections 3 through 17 of
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-45 of 2-72
this Project Execution Plan. Although the services will be
performed under on-shore and off-shore contracts, no detailed
differentiation is made in this document.
Project Management/Project Controls
The Las Bambas Project manager will have overall responsibility
for the execution of the project and be based in Santiago. He will
have the responsibility to lead the replication, synergy and
integration (RSI) initiative across all aspects of the project and
the various work sites in order to minimize services costs, capital
costs and reduce schedule on Las Bambas.
He will be supported by a Deputy Project Manager who will
provide day-to-day oversight of the areas of Engineering,
Procurement, Finance and Pre-Ops.
Reporting directly to the Project Manager, the Manager of
Replication and Productivity will be responsible for management of
the development and implementation of plans, procedures and work
processes required to maximize the cost and schedule benefits to
the Las Bambas Project from replication, integration and
capitalizing on synergies with the Antapaccay Project. In general,
the management of Bechtels scope will include:
Establish a management organization that will be responsible for
directing and coordinating all of the activities associated with
the scope of services as specified in the contract and the
accompanying documents.
Provide the technical and other resources required for the
proper execution of the services in the detail engineering and
construction phase.
Plan and execute an initial Team Building Session with project
management team members from Bechtel and MMG from all disciplines.
This meeting will provide an opportunity for the combined team to
confirm alignment on the project key objectives and the path
forward.
Manage a detailed project kick-off meeting to be held in
Santiago including MMG Peru Division.
Monitor and control the work schedule for the project scope and
the relevant budgets, in order to obtain timely information on
project status.
Prepare a monthly status report on the project progress,
schedule and costs. Provide early detection of potential deviations
related to schedule and cost. Report
actual costs and commitments on a monthly basis, update the
forecast costs to completion, and report deviations from the
control budget. Bechtel will propose to MMGs project manager
remedial action as may be required to address deviations from the
approved budget and schedule.
Establish and maintain a trend program based on the control
budget and the project master schedule. The trend program will
constitute the main control tool to maintain cost and schedule
control of all project activities within the Bechtel
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-46 of 2-72
scope, and will provide timely information to MMG on potential
changes in costs or schedule.
Submit for MMG approval the procedure manual for the management
of changes and use of contingency.
Prepare monthly projections of commitments and expenditures.
Prepare cash flow projections for all activities within the project
scope. Coordinate the work of all disciplines in order to achieve
technical consistency. Coordinate the work of other consultants and
contractors as agent of MMG to
obtain consistency within the scope managed by Bechtel.
Cooperate with other advisors, experts, consultants and specialists
that may be
periodically engaged by MMG for the project. Prepare the Project
Procedures Manual for the project scope including
engineering, purchasing, accounting and administration, contract
formation and administration of construction and service contracts,
and management of direct-hire construction activities. Submit the
procedures manual to MMG for approval and address any comments.
Prepare, disseminate and manage a quality assurance program
appropriate for all services provided by Bechtel including that of
sub-contractors managed by Bechtel.
Coordinate the acquisition and review soundness of vendor data
(but this does not require Bechtel to validate, verify or check
that data).
Bechtel will obtain MMGs prior written approval for purchase and
contract commitments, pursuant to the project procedures agreed
with MMG.
Hold weekly meetings with the MMG project team to review project
status and to make timely decisions/actions to keep the project on
track.
Prepare labor (manpower) staffing plans for management,
engineering, procurement, and construction services.
Administer the EPC/CM contract between Bechtel and MMG.
Implement a control budget based on the Feasibility Study capital
cost estimate. Establish the project office as required in
Santiago, to meet the needs of the
project. Expand the project IS&T systems based on the
currently networked MMG and
Bechtel offices to meet the needs of the project including
network connections to connect with offices in Lima, Cusco,
Arequipa and Las Bambas Site.
Incorporating the use of Six Sigma principals utilizing the Six
Sigma Black Belt who has been assigned to the alliance since the
Las Bambas FS Phase to continue to work with the Bechtel and MMG
team to improve project work processes and develop cost and time
saving strategies.
The Six Sigma program has been modified to focus on construction
productivity utilizing a productivity coordinator who reports
directly to the Site Manager.
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-47 of 2-72
Develop, implement, maintain and monitor conformance of a
Project Quality Plan and manage its implementation across the
project including service and construction subcontractors and
contractors.
Develop, implement, maintain and monitor conformance of
comprehensive Sustainable Development, Labor Relations, Community
Relations and Environmental Protection plans and manage their
implementation across all aspects of the project.
Establish the finance and accounting operations in Santiago and
Lima for in-country requirements including management of general
ledger, accounts payable and payroll. Develop and maintain an asset
register for the project. Payroll accounting for direct-hire
personnel will be maintained at the jobsite or in Lima.
Process for payment vendor invoices, performing appropriate
matching and cross-checking against purchase orders and material
receiving reports.
Establish a procedure for managing payments as an agent to MMG
of all vendor and contractor invoices on a zero balance bank
account basis. Operate the zero balance account working with
project controls, procurement and MMG to prepare advance cash flow
requirements to enable MMG to ensure sufficient funds are in place
to pay all vendors and contractors in a timely manner.
Manage the administration aspects of the project using Bechtels
standard procedures for managing all administration,
communications, and document control functions.
Implement project document control and administration utilizing
InfoWorks to log the receipt of all project documentation in all
forms including all correspondence related to project engineering,
construction packages, material requisitions, specifications,
drawings, and tracking of open items related to engineering work
execution. All official document communications with MMG will be
done through MMGs Aconex System or through the system designated by
MMG.
Develop a full automation and communications plan to augment the
current IT infrastructure for the more demanding execution phase of
the project. Bechtels project offices in Santiago, Lima, Cusco,
Arequipa and the site will be fully equipped with computer-based
tools and communications systems for execution of engineering,
procurement, and construction, including:
Develop a definitive cost estimate for the project at an
appropriate time during detail engineering phase. The definitive
estimate will be developed by the project team, accounting for all
approved trends, commitments and expenditures, as well as a
reassessment of all to-go work. This definitive estimate will occur
at a point in time when detail engineering is approximately 70%
complete and construction has progressed in the civil trades on
site.
Monitor and control detailed engineering discipline man-hours
and costs through the use of the engineering progress and
performance reporting (EPPR) module of
-
Section 2 Work Execution Overview
Bechtel Confidential Copyright Bechtel Corporation 2010.
Las Bambas Project PROJECT EXECUTION PLAN
25635-220-G01-GAM-00001 Rev. 1, 13-Aug-2014 Page 2-48 of 2-72
the Bechtel proprietary software ePCWorks. The tool will be used
to plan, monitor, and evaluate the progress and performance of
engineering tasks and deliverables.
Replication, Synergy and Integration (RSI) Management
The Manager of Replication and Six Sigma will be responsible for
management of the development and implementation of plans,
procedures and work processes required to maximize the cost and
schedule benefits to the Las Bambas Project from replication from,
integration with and capitalizing on