BIRD IN HAND GOLD PROJECT - Terramin Australia Limited · the Preliminary Single Line Diagram (17255-SK-002) and the Concept Electrical Equipment Layout Plan (17255-SK-004). The following

BIRD IN HAND GOLD PROJECT MINING LEASE PROPOSAL MC 4473

ABN | 66 122 765 708 Unit 7 / 202-208 Glen Osmond Road | Fullarton SA 5063

APPENDIX B3

POWER STUDY

GPA Engineering Pty Ltd. ABN 71 576 133 774 Printed: 06-Oct-2017 www.gpaeng.com.au [email protected]

WA L3, 267 St Georges Tce Perth WA 6000 T +61 8 9261 7736

Head Office – SA 121 Greenhill Road Unley SA 5061 T +61 8 8299 8300

QLD 9 Gardner Close Milton QLD 4064 T +61 7 3551 1300

To: Terramin Australia

Attn: Katherine Laughton

CC: Rob Lake

Subject: Bird in Hand Gold Mine Interim Report

Pages:

Project Number: 17255

Date: 27/07/17

Reference: 17725-MEMO-001 rC

1. Executive Summary

A new gold mine is proposed at Bird in Hand (BIH) near Woodside in the Adelaide Hills. Power for the

mine will be provided from the state distribution network. A new 11kV connection point will be located on

Pfeiffer Road near the site entrance. Onsite reticulation will be via underground high voltage cables and

ground mount electrical equipment.

Annual site electricity consumption during operation is estimated at 16GWh with a site maximum

demand of 2.8MVA (2.6MW).

The SA Power Networks 11kV overhear line along Pfeiffer Rd will require upgrade from Woodside-

Nairne Rd to just beyond the mine site (approximately 2.4kms). The method of upgrade will involve

either the installation of voltage regulation or restringing of the overhead line conductor pending a more

detailed investigation by SA Power Networks.

Work is currently underway as part of a Power System Options Study to investigate the feasibility of

onsite solar generation and conventional generation to supplement the grid electrical supply.

2. Electricity Grid Connection

The BIH Gold Mine underground and surface facilities will be supplied with a high voltage grid

connection to SA Power Networks (SAPN). Connection to the distribution network will be made at 11kV

with the point of connection located across the road from the site main entrance on Pfeiffer Road. The

Pfeiffer Road 11kV Overhead Line forms part of the Inverbrackie Feeder which originates at the

Woodside Substation located approximately 3.5km from mine site.

It is intended the new grid connection will be completed prior to major construction activities occurring

onsite. The major of construction energy requirements can then be suppled via the grid connection with

minor support via temporary diesel generation where required.

Due to the anticipated mine site electrical demand during operation, the 11kV Overhead Line between

Woodside-Nairne Road and the mine site will require upgrade By SAPN prior to full mining operations

commencing. Discussions regarding upgrade of the 11kV Pfeiffer Road Overhead Line are ongoing with

SA Power Networks, but it is envisaged any required upgrade works would occur parallel with mine site

surface facility construction.

The method of upgrade will involve either the installation of voltage regulation or restringing of the

overhead line conductor pending a more detailed investigation by SA Power Networks.

Date By Checked QA Description

20/09/17 EH GC RHL rC - Issued for Use

Memorandum

GPA Engineering Pty Ltd. ABN 71 576 133 774 Page 2 of 7

17255-MEMO-001 rC - Interim Summary

Printed: 06-Oct-2017 at 8:48

Augmentation costs must be paid by the project to SA Power Networks to facilitate any current or future

upgrade of the 11kV Overhead Line, Woodside Substation and associated grid infrastructure.

3. Onsite Electricity Supply Infrastructure

High voltage reticulation around the mine site will be via underground conductors and ground mount

high voltage switchgear feeding 11/0.4kV transformers strategically distributed across the site. It is

envisaged the majority of surface loads will be supplied at 400V. Underground loads with be supplied at

either 400V or 1000V via dedicated transformers as required. Further information can be obtained from

the Preliminary Single Line Diagram (17255-SK-002) and the Concept Electrical Equipment Layout Plan

(17255-SK-004). The following provides a brief overview of the main site electrical infrastructure:

1. Underground cabling from the connection point on Pfeiffer Road to the Electrical Metering

Switchboard located near the site main gate.

2. Underground cabling installed nominally along the site roadway from the main gate to the

Wheel Wash and Workshop/Admin Substation. Radial HV/LV underground feeder cables will

supply power to the various surface facilities distributed around the mine site.

3. A high voltage underground feeder cable will supply power from the Workshop/Admin

Substation to the Mining Substation which will be located close to the primary ventilation shaft.

HV/LV cabling from the Mining substation will provide power to the underground mining

operations via the primary ventilation shaft.

4. An emergency back-up diesel generator will be installed close to and connected to the

Workshop/Admin Substation. The generator will provide power to critical site loads in the event

power is not available from the grid.

Typical electrical reticulation equipment to be used will include:

1. High Voltage and Low Voltage Switchgear - including circuit breakers, Load-break switches and

earth switches.

2. Transformers – Converting 11kV to 1kV (for reticulation underground) and 11kV to 400V for

surface facilities.

3. Electrical Protection Relays – To ensure the safety of personnel and to protect electrical

equipment.

4. Soft Starters and Variable Speed Drives – Installed from large motor loads

5. Power Quality equipment – Including Power factor correction units and Harmonic filters (where

required).

6. Emergency Backup Generator – Diesel generator with sound attenuating canopy with a nominal

size of 700kVA.

Some images of outdoor typical electrical equipment can be found in section 10.

Equipment will be nominally grouped as per the provided concept electrical equipment location plan and

the preliminary single line diagram.

Memorandum




All electrical equipment will be procured, designed and constructed in accordance with Electricity Act

1996 (SA), and applicable Australian Standards.

As per Terramin Australia policy, equipment will meet or exceed or statutory compliance requirements,

be of a high quality, and sourced locally wherever possible. The visual impact of all electrical equipment

is to be reduced as far as practical.

4. Electricity Demand

The electricity demand has been estimated over the complete mine life as per the following high level

project timeline:

Figure 1: Mine Development Phases

The preliminary mine maximum demand for the purposes of infrastructure planning has been estimated

at 2.8 MVA during full operation. The mine is estimated to have an average real power load during the 5

year operational phase of between 1.8 and 2.6 MW.

Major loads include:

1. Mine Ventilation Systems

2. Underground and above ground pumps

3. Underground drilling machinery

The site maximum demand has been calculated conservatively as final duty and operation of equipment

is not yet known. Table 1 below provides an overview of estimated site connected and actual loads

during the 5 year mine operation period.

Table 1: Site Maximum Demand during Ore Production

Item Connected Load (kW) Actual Load* (kW)

Underground Mining Operations 2,292 1,892**

Above Ground Facilities 734 335**

Office, Workshop and Amenities 591 390**

Total 3,617 2,617**

*Includes diversity and utilization factors.

** Includes a 20% estimation factor as loads are preliminary.

Memorandum




For the purpose of calculating annual electricity consumption a nominal load utilization factor of 0.7 has

been applied. Based on the maximum demand and the load utilization factor, annual consumption

during operation is estimated at 16GWh.

During the construction of the surface facilities prior to mining operations, the required energy demand

will be significantly lower. The construction phase energy consumption is estimated at 0.82GWh per

annum. This figure is based on the office, admin, workshop, security and amenities loads operating for

12 hours a day and 6 days a week.

When underground development commences, but prior to full ore production load will begin to ramp up

as additional mining, ventilation and pumping equipment is installed. The extra loads will require

~700kW of additional supply beyond that required for surface construction. This equates to an annual

consumption of

It is estimated that during the one year mine closure period once ore production has ceased power

consumption will be 1.1MW.

The following table summarizes estimated energy demand across the mine lifecycle:

Table 2: Estimated Annual Energy Consumption

Mine Phase Estimated Length of

Phase (years) ***Estimated Average Energy Demand (kW)

Estimated Annual Energy Consumption (GWh)

Surface Construction 1 230** 0.86

Underground development 1 920*** 8.0

Ore Production (operation) 5 1,800*** 16

Mine Closure Phase 1 1,200** 4.5

*A nominal load utilization factor of 0.7 has been applied to the maximum demand to calculate Estimated Average Energy Demand

**Operation 12 hours per day and 6 days per week

***Operation 24 hours per day and 7 days per week

5. CO2 equivalent per annum

Based on the estimated annual electricity consumption (table 2) and the 2016 National Greenhouse

Accounts Factors (Section 2.3 - Indirect Emissions from Electricity) green house gas emissions per year

are calculated as per the following table.

Table 3: CO2-e per Annum in each Phase

Mine Phase Estimated Annual Energy

Consumption (GWh) CO2-e Per Annum (tons)

Surface Construction 0.86 460

Underground development 8.0 4,300

Ore Production (operation) 16 8,500

Mine Closure 4.5 2,400

Memorandum




The total estimated green house gas emissions over the complete mine life is 49,660 tons of CO2-e.

6. Alternate Sources of Electricity

Work is currently underway as part of a Power System Options Study to investigate the feasibility of

onsite solar generation and conventional generation as supplementary sources of electricity.

The Admin and Workshop Buildings will have significant roof space available for installation of a solar

system. The proposed solar system would be used to reduce green house gas emissions and offset

demand from the electricity grid. Based on an estimate of half the roof space (~440m2) suitable for

installation of solar panels, a system of approximately 60kW could be installed. Further opportunities to

install additional solar capacity will exist in the event more of the workshop and Admin building roof can

be utilized or additional structures are required onsite.

In addition to onsite solar generation, options for the site Backup Generator to operate as a Non-export

Embedded Generator are being investigated. The fuel source for the generator is to be determined by

the Options Study, but would be either diesel or gas. The generator would operate during periods of

high mine site demand in parallel with the electricity grid. This scheme would provide load side demand

management to reduce mine site reliance on the local grid and the Woodside Substation.

Final feasibility of alternate power sources will depend on negotiation of the connection to the 11kV

Pfeiffer Road Overhead Line, and outcomes of the Power Supply Options Study.

7. Energy Efficiency and Power Quality

Endeavors to increase energy efficiency will be included in the mine site electrical design.

Some of these measures to be considered as part of electrical design include:

1. Installation of high efficiency equipment including motors and transformers. All equipment to

meet Minimum Energy Performance Standards (MEPS).

2. Utilization of variable speed drives to optimize energy use of electric motors where practicable.

3. Cable sizing for energy efficiency as well as current carrying capacity.

4. Site power factor correction equipment to minimize reactive power losses throughout the

reticulation network.

5. Harmonic filtering to minimize the effect of harmonics on the site power network.

In additional to electrical efficiency, power quality and associated impacts on the local grid will be

considered by the electrical design. The site will comply with power quality limits set by SA Power

Networks as outlined in their Service and Installation Rules and the grid connection agreement. Any

impact the mine site will have on grid power quality must have negligible impacts on other SAPN

customers. The electrical design will identify any potential non-compliance and make recommendations

regarding required mitigation measures.

Memorandum




8. Mine Closure

Once mining operations are complete, the majority of mine electrical infrastructure is to be removed.

Any upgrade of the regulated SAPN network will remain in place for the future benefit of the local

community. Discussions regarding use of the site by the local community beyond mining are to be

undertaken prior to removal of all electrical equipment. If required, the grid connection can be retained

and used by any new operators of the remediated mining site for the supply of electricity.

9. Power Supply Schedule of Works

The following provides a high level overview of the timing for grid connection and electrical infrastructure

construction:

Table 4: High level Electrical Infrastructure Construction schedule

Activity Timing

Approval of PEPR

Construction of preliminary grid connection and procurement of mine site electrical equipment 9-12 months

Construction of surface electrical infrastructure (in parallel with mining equipment and infrastructure) 6 months

Construction of underground electrical infrastructure (ongoing with the mine development) 5 years

Removal of redundant electrical equipment (mine closure) 1 year

Note: Assumed preliminary electrical design and connection agreement completed before final approval of PEPR.

10. Typical Power Supply Equipment Photos

The following provides photos of typical outdoor electrical infrastructure which will be similar to that used

on the Bird in Hand Site.

Figure 2: Outdoor Electrical Substation for Mining activities

Memorandum




Figure 3: Outdoor Padmount 11/04kV Electrical Distribution Kiosk Transformer

Figure 4: Outdoor Low Voltage Electrical Distribution Switchboard

# PhasesVoltage, V

(V)

Efficiency, eff

(Note 8)

Power

Factor, pf

(Note 4)

Load Factor,

LF

(Note 4,7)

DutyUtilisation

(diversity factor)

Diversity

Factor, Div

(Note 6)

Units: drop-down box:single ph, kW Continuous 1.00

1 --> 230.9 A Intermittent 0.50

three ph, Standby 0.10

3 --> 400 Other 0.00

0.85 0.95 0.75

3φ R W B R W B R W B R W B R W B 3φ R W B 3φ R W B 3φ R W B

400.0

1 3 400.0 60.0 kW 1.0 default 1.0 20.0 20.0 20.0 91.2 91.2 91.2 1.0 Intermittent 0.5 91.2 91.2 91.2 45.6 45.6 45.6 31.6 10.5 10.5 10.5 30.0 10.0 10.0 10.0 9.9 3.3 3.3 3.3










400V Equipment

REF

CALCULATED ACTUAL LOADS

(BASED ON LOAD FACTOR)DEVICE NAMEPLATE DATA

Rated Shaft Power, PRATED (kW)

or

Rated Current, IFLC (A)

(Notes 5,8)

Calculated Actual Load

Current, IACTUAL

(A)

Substation / TransformerSUB-TOTAL

AREAS

UTILISATION FACTORS

(TO DETERMINE MAX. DEMAND)

LOAD DESCRIPTION TYPE

Instructions/Information

relating to column -->

Workshop and Admin Substation

drop-down box:

(refer cells X91 - X96)

Calculated Actual

Consumption, kWACTUAL

(kW)

Apparent Power, S

(kVA)

Real Power, P

(kW)

CALCULATED MAX. DEMAND CONTRIBUTION VALUES

Connected Load, ISUM

(A)

(Note 1)

S 3ph =√3.I MD .V

S 1ph =I MD .V

P 3ph =√3.I MD .V.pf

P 1ph =I MD .V.pf

drop-down box:

Load Current, IMD

(A)

I SUM =FLC

OR

I SUM(3ph) =P RATED /√3.V.pf

I SUM(1ph) =P RATED /V.pf

actual value or

"default"

I ACTUAL(3ph) =kW ACTUAL /√3.V.pf

I ACTUAL(1ph) =kW ACTUAL /V.pf

e.g. 0.5 for

duty/standby

NOTES

Q 3ph =√3.I MD .V.sin θ

Q 1ph =I MD .V.sinθ

Reactive Power, Q

(kVAr)

based on

prev. columnkW ACTUAL = P RATED x LF

/eff

<== default values

actual value or "default"actual value or

"default"

1 Phase

Enter Value (s)

here

3 Phase

Enter Value

here

based on prev.

column

I MD =I ACTUAL x Duty x Div

Boom Gate 1

Mining Drill Bay Mine Site

Front Gate


Site Secuitiry Hut Transformer


Mine Site

Mine Site

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

Admin Building

Male Ablution

Female Ablution

Laundry

Potable Water Pumps

Aerobic Waste PumpsWorkshop and Admin Substation






Crib Muster Room

3φ General

3φ General

3φ General

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

OR

. REV DATE ENG CHK QA PROJECT DESCRIPTION

Client: 0 3/07/2017 EH GC RHL 17255 Issued for Review

Site: 1 24/07/2017 EH GC RHL 17255 Loads Updated

Project Title:

GPA Project No:

Client Project No:

Preliminary Load List and Maximum Demand17255-CALC-001

COW2084

Cowell Electric Supply Pty Ltd

Bird In Hand Mine

BIH Mine Power Supply Study

17255














23 3 400.0 0.5 kW 1.0 default default 0.1 0.1 0.1 0.6 0.6 0.6 1.0 Intermittent 0.5 0.8 0.8 0.8 0.3 0.3 0.3 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.0 0.0 0.0














36 3 400.0 10.0 kW 1.0 default default 2.5 2.5 2.5 11.4 11.4 11.4 1.0 Intermittent 0.5 15.2 15.2 15.2 5.7 5.7 5.7 3.9 1.3 1.3 1.3 3.8 1.3 1.3 1.3 1.2 0.4 0.4 0.4TBA Bore 8 3φ General Mine Site

Wheel Wash Substation Stormwater Detention Basin Pump 3φ General Mine Site

Workshop and Admin Substation Magazine Exhaust Fan 3φ General Mine Site

TBA Mine Site

TBA Bore 5 3φ General Mine Site


Bore 7 3φ General

Workshop and Admin Substation Plant Air Compressor 2


Workshop and Admin Substation Steam Cleaner

Pumping Shed Transformer Surface Water Dam Pump 1

Pumping Shed Transformer Surface Water Dam Pump 2

TBA Bore 1

Bore 3

Mine Site

Mine Site


TBA


3φ General

Workshop and Admin Substation Stores Office 3φ General Mine Site

Workshop and Admin Substation Plant Air Compressor 1 3φ General Mine Site

Mine SiteWorkshop 3φ General

Mine Site

Mine Site

Mining Drill Bay

ERT Room/ Sick Room

Mine Site

Boxcut Sump Pump

Cap Lamp Charger

Bore 2

Car Park Lighting

Escapeway boxcut Fan

Ice Machine

Workshop Office/ Toilet Block 3φ General Mine Site

Wheel Wash Substation


TBA

Workshop and Admin Substation Fuel Pump

Workshop and Admin Substation Wash Pad

Mine Site

Water Treatment Plant Distribution Board (Final Equipment

TBA)Mine Site






Mining Substation

3φ General

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

Mine Site

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General

3φ General













48 3 400.0 200.0 kW 1.0 default default 50.0 50.0 50.0 227.9 227.9 227.9 1.0 Continuous 1.0 303.9 303.9 303.9 227.9 227.9 227.9 157.9 52.6 52.6 52.6 150.0 50.0 50.0 50.0 49.3 16.4 16.4 16.4















63 3 400.0 1.0 kW 1.0 default 1.0 0.3 0.3 0.3 1.5 1.5 1.5 1.0 Continuous 1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.1 0.4 0.4 0.4 1.0 0.3 0.3 0.3 0.3 0.1 0.1 0.1


Waste Material Handling Distribution Board (Final Equipment

TBA)3φ General Mine Site

3φ General Mine Site

Mine SiteMining Substation Blasting System 3φ General

Mining Substation Comms

Wheel Wash Substation Sump Pumps 3φ General Mine Site

Wheel Wash Substation Truck Loading Distribution Board (Final Equipment TBA) 3φ General Mine Site

Wheel Wash Substation Wheel Wash 3φ General Mine Site


Mining Substation Mono Pump 3φ General Mine Site

Mining Substation Mono Pump

Mining Substation Clarifiers (pump) 3φ General Mine Site

Mining Substation Mine Site

Workshop and Admin Substation General Lighting 3φ General Mine Site

Mining Substation Clarifiers (pump) 3φ General Mine Site

TBA

Mine Site

Mine Site

Mine Site

Mine Site3φ General

3φ General

Sump Pump #10 3φ General Mine Site


Mining Substation

Mining Substation

Mining Substation

Batch Plant

Primary Vent Fan 1

Primary Vent Fan 2

Excapeway Booster Fan

3φ General

3φ General

TBA Sump Pump #9 3φ General Mine Site

Mine Site



TBA Sump Pump #8

3φ General

Mine SiteTBA Sump Pump #4 3φ General




TBA Sump Pump #5


Refuge Chamber 3φ General

Mining Substation Refuge Chamber 3φ General Mine Site

Mining Substation Sensors/ monitoring system 3φ General Mine Site






1000.0
















Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Mine Site

Jumbo 2 3φ General Mine Site

Mine SiteMining Substation Enviro Sensors 3φ General

Mining Substation Jumbo 1


Mining Substation FLYGT Pump

Mining Substation Mono Pump 3φ General

Mining Substation

Mine Site

Workshop and Admin Substation Jumbo Test Bay 3φ General Mine Site

Mining Substation Kbolter 3φ General

1000V Equipment


Mining Substation

Mine Site

Mine Site

Mine Site

Mining Substation Fan - 290LVL 3φ General Mine Site

Note 10

Note 10

Mining Substation Remote Starter 3φ General Mine Site

Mining Substation Jumbo Starter 3φ General Mine Site



Mining Substation FLYGT Pump 3φ General

Fan - 190 LVL 3φ General Mine Site

3φ General


Mining Substation FLYGT Pump 3φ General


Mining Substation Fan - 210LVL

Mining Substation FLYGT Pump 3φ General Mine Site

17255-CALC-001rB - BIH Mine Site MD 1 of 2 28/07/2017

# PhasesVoltage, V

(V)

Efficiency, eff

(Note 8)

Power

Factor, pf

(Note 4)

Load Factor,

LF

(Note 4,7)

DutyUtilisation

(diversity factor)

Diversity

Factor, Div

(Note 6)

Units: drop-down box:single ph, kW Continuous 1.00

1 --> 230.9 A Intermittent 0.50

three ph, Standby 0.10

3 --> 400 Other 0.00

0.85 0.95 0.75

REF

CALCULATED ACTUAL LOADS

(BASED ON LOAD FACTOR)DEVICE NAMEPLATE DATA

Rated Shaft Power, PRATED (kW)

or

Rated Current, IFLC (A)

(Notes 5,8)

Calculated Actual Load

Current, IACTUAL

(A)

Substation / TransformerSUB-TOTAL

AREAS

UTILISATION FACTORS

(TO DETERMINE MAX. DEMAND)

LOAD DESCRIPTION TYPE

Instructions/Information

relating to column -->

drop-down box:

(refer cells X91 - X96)

Calculated Actual

Consumption, kWACTUAL

(kW)

Apparent Power, S

(kVA)

Real Power, P

(kW)

CALCULATED MAX. DEMAND CONTRIBUTION VALUES

Connected Load, ISUM

(A)

(Note 1)

S 3ph =√3.I MD .V

S 1ph =I MD .V

P 3ph =√3.I MD .V.pf

P 1ph =I MD .V.pf

drop-down box:

Load Current, IMD

(A)

I SUM =FLC

OR

I SUM(3ph) =P RATED /√3.V.pf

I SUM(1ph) =P RATED /V.pf

actual value or

"default"

I ACTUAL(3ph) =kW ACTUAL /√3.V.pf

I ACTUAL(1ph) =kW ACTUAL /V.pf

e.g. 0.5 for

duty/standby

NOTES

Q 3ph =√3.I MD .V.sin θ

Q 1ph =I MD .V.sinθ

Reactive Power, Q

(kVAr)

based on

prev. columnkW ACTUAL = P RATED x LF

/eff

<== default values

actual value or "default"actual value or

"default"

1 Phase

Enter Value (s)

here

3 Phase

Enter Value

here

based on prev.

column

I MD =I ACTUAL x Duty x Div

OR

. REV DATE ENG CHK QA PROJECT DESCRIPTION

Client: 0 3/07/2017 EH GC RHL 17255 Issued for Review

Site: 1 24/07/2017 EH GC RHL 17255 Loads Updated

Project Title:

GPA Project No:

Client Project No:

Preliminary Load List and Maximum Demand17255-CALC-001

COW2084

Cowell Electric Supply Pty Ltd

Bird In Hand Mine

BIH Mine Power Supply Study

17255













Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10

Note 10Mining Substation Fan - 170LVL 3φ General Mine Site











Mine SiteMining Substation Fan - 50LVL 3φ General95 3 1000.0 55.0 kW 1.0 default default 13.8 13.8 13.8 25.1 25.1 25.1 1.0 Continuous 1.0 33.4 33.4 33.4 25.1 25.1 25.1 43.4 14.5 14.5 14.5 41.3 13.8 13.8 13.8 13.6 4.5 4.5 4.5






SUPPLY SIZE SUB-AREA TOTALS

3000 Mine Site 637.2 637.2 637.2 400V Equipment: 3394.2 3394.2 3394.2 1791.3 1791.3 1791.3 413.7 413.7 413.7 393.0 393.0 393.0 129.2 129.2 129.2356.9 356.9 356.9 1000V Equipment: 839.9 839.9 839.9 609.1 609.1 609.1 351.7 351.7 351.7 334.1 334.1 334.1 109.8 109.8 109.8

Overall Total 994.08 994.08 994.08 - - - - - - 765.4 765.4 765.4 727.1 727.1 727.1 239.0 239.0 239.0

NOTES: DESIGN SPARE CAPACITY: LEGEND:

1.

2.= user entered known data

= lookup/calculated value

3.4.

5.

6.

7.

8.

9.

the value "1" in these columns.

Note 10

Note 10

Appendix C, "Power Factor", "Load Factor" and "Duty" should all be set to 1, and the percentage of connected load values (as shown in AS/NZS 3000:2007 Appendix C) should be entered as the "Diversity Factor".

calculating the maximum demand may be used taking account of all the relevant information available for any particular electrical installation". If the user wishes to follow the calculation guides in AS/NSZ 3000:2007

This calculation is intended as a more accurate approach than the guide included in AS/NZS 3000:2007 Appendix C. This calculation is still in accordance with AS/NZS 3000:2007 cl 2.2.2 (a): "...Alternative methods of

calculating the maximum demand may be used taking account of all the relevant information available

Total Real Power (kW) 2618

Estimation factor, %

loads subject to change 20%

Note 10

Note 10

Note 10

All loads are based on concept design and are subject to change


Either the Rated Power in kW or load current (FLC) in Amps can be entered into the Rated Power or FLC column. This is assigned by selecting either kW or A in the "Units" column.

will be used. This typical value is located in the column header cells. For unusual loads, and where these values are not known, the most conservative approach is to use

Efficiency is only used to calculate electrical input power when motor (shaft power) ratings are given in kW. When the FLC is specified instead, this value is ignored.

The sum of the connected loads takes into account power factor but not load factor.

For the columns: "Power Factor" and "Load Factor", if these load characteristics are not known, the user may write "default". By writing "default" into this cell, a typical valueThe user is only required to enter data into the white (non-shaded) cells. Refer to the legend adjacent for an explanation of the cell data.

Load Factor is the factor to which the load is designed to operate at. Eg. An electric motor may have a FLC of 10A, but the load only causes the motor to draw 7.5A, therefore 0.75 Load Factor. Load Factor can be

determined from the mechanical design or from actual measured data.

The Diversity Factors listed in the "Diversity Factor" column header are suggested. These values may be manipulated by the user to suit the specific installation.

Mine Site Note 10


Mine Site


Mining Substation Fan - 50LVL 3φ General


Mining Substation Fan - 10LVL 3φ General

9.

10.

11. A 20% estimation factor has been applied to the maximum demand to account for the preliminary nature of loads.

Utilisation (diversity factor) has been applied conservatively for the purposes of the preliminary MD. Exact duty, utilisation and operation of equipment is to be confirmed.

All loads are based on concept design and are subject to change

17255-CALC-001rB - BIH Mine Site MD 2 of 2 28/07/2017

1 2 3 4 5 6 7 8 9 10 11 12 A3 SHEET

1 2 3 4 5 6 7 8 9 10 11 12

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

REFERENCE DRAWINGS

NUMBER TITLE

REVISION

DESCRIPTIONNo DATE DRN CHK ENG QA PROJECT121 Greenhill Road

Unley, SA, 5061

Phone: (08) 8299 8300

[email protected]

DATE DRAWN CHK ENG QA SCALE REV

PROJ No DRG No

A

C

B

29/06/17

18/9/17

21/07/17

GPA

GPA

GPA

EH

EH

EH

DT

DT

RHL

RHL

RHL

17255

17255

17255

Issued for Information

Minor Updates

Mineral Claim Boundary Updated

17255-SK-004

17255-SK-003

17255-SK-002

Electrical Equipment Plan

Load Location Plan

Single Line Diagram

BIRD-IN-HAND GOLD PROJECT

POWER SUPPLY OPTIONS STUDY

PRELIMINARY GRID CONNECTION LAYOUT

29/06/17 GPA GC EH RHL NTS

C17255 17255-SK-001

GC

Notes:

1. Refer to Maximum Demand 17255-CALC-001 for site

loads.

2. Mining operations are to be 24 hours per day.

3. Initial connection to support construction activities with

upgrade of the Pfeiffer Road Overhead Line if required

prior to mining operations commencing.

SA Power Networks

Woodside Substation

Bird-in-hand

Mineral Claim

Boundary

Proposed Grid Connection Location

(11kV Pfeiffer Road Overhead Line)

Approx. 3.6 km from Woodside

Subsation

N

Terramin Owned

“Goldwyn”

Property Boundary

Legend:

Existing SA Power Networks 11kV Overhead Line

Proposed Connection Point

SA Power Networks Woodside Subsation

Existing SA Power

Networks 11kV Overhead

Line From Woodside

Substation

1 2 3 4 5 6 7 8 9 10 11 12 A3 SHEET

1 2 3 4 5 6 7 8 9 10 11 12

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

REFERENCE DRAWINGS

NUMBER TITLE

REVISION


Unley, SA, 5061

Phone: (08) 8299 8300

[email protected]


PROJ No DRG No

FROM DRAWING 20155706 – 201 rC

B

A

26/07/17

17/07/17

GPA

GPA

EH

EH

GC

DT

RHL

RHL

17255

17255

Loads Updated

Issued For Review

17255-SK-003

17255-SK-002

Electrical Equipment Location Plan

Single Line Diagram

TERRAMIN AUSTALIA

BIRD IN HAND GOLD MINE

CONCEPT LOAD LOCATION PLAN

17/07/17 GPA EH DT RHL NTS

B17255 17255-SK-003

Notes:

1. EACH NUMERICAL VALUE REPRESENTS A KNOWN

LOAD. REFER TO MAXIMUM DEMAND CALCULATION

17255-CALC-001 TO MATCH NUMERICAL VALUE TO

THE LOAD DESCRIPTION.

3. LOCATIONS SHOWN ARE PRELIMINARY AND

APPROXIMATE FOR THE PURPOSES OF CONCEPT

DESIGN.

1,2,3,4,5,6,7,10,11,

16,17,18,19,

20,21,22, 51, 55-

59, 69

15

23,24,25

47

48,49,60-68, 70-

100

REFER TO LOAD LIST 17255-CALC-001

FOR LOAD DESCRIPTIONS

13

8, 9, 12

29

26, 27

52, 53, 54

14, 50

28

1 2 3 4 5 6 7 8 9 10 11 12 A3 SHEET

1 2 3 4 5 6 7 8 9 10 11 12

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

REFERENCE DRAWINGS

NUMBER TITLE

REVISION


Unley, SA, 5061

Phone: (08) 8299 8300

[email protected]


PROJ No DRG No

FROM DRAWING 20155706 – 201 rC

C

B

A

18/09/17

25/07/17

17/07/17

GPA

GPA

GPA

GC

EH

EH

EH

GC

DT

RHL

RHL

RHL

17255

17255

17255

Minor Updates

Updated with Underground Cable Details

Issued For Review

17255-SK-003

17255-SK-001

17255-CALC-001

17255-SK-002

Load Location Plan

SAPN Connection Location

Maximum Demand

Single Line Diagram

TERRAMIN AUSTALIA

BIRD IN HAND GOLD MINE

MAJOR ELECTRICAL EQUIPMENT

CONCEPT LOCATION PLAN

17/07/17 GPA EH DT RHL NTS

C17255 17255-SK-003

NEW METERING

SWITCHBOARD

WORKSHOP AND

ADMIN SUBSTATION

NEW GRID

CONNECTION POINT

HIGH VOLTAGE SWITCHGEAR

UNDERGROUND HIGH VOLTAGE CABLE

MINING

SUBSTATION

SECURITY HUT

TRANSFORMER

Notes:

1. Refer to Single Line Diagram 17255-SK-002 for further

details.

2. Refer to Load Location Plan 17255-SK-003 for an

overview of the location of major LV electrical loads.

3. Cable nominated as underground may also be installed

above ground on pipe racks or similar where this

infrastructure exists for other services.

WATER

PUMPING SHED

TRANSFORMER

LOW VOLTAGE SWITCHGEAR

TRANSFORMER

WHEEL WASH

SUBSTATION

CREEK CROSSING TO

USE SMALL SECTION OF

ABOVE GROUND CABLE.

CABLE TO BE INSTALLED

ON CABLE LADDER FIXED

TO BRIDGE

ABOVE GROUND HIGH VOLTAGE CABLE

Documents

BIRD IN HAND GOLD PROJECT - Terramin Australia Limited · the Preliminary Single Line Diagram (17255-SK-002) and the Concept Electrical Equipment Layout Plan (17255-SK-004). The following