uganda electricity distribution company limited · figure 14 capacitor bank at jesa farm,busunju...

UGANDA ELECTRICITY DISTRIBUTION

COMPANY LIMITED

REPORT ON COMPLIANCE WITH THE LEASE AND

ASSIGNMENT AGREEMENT (LAA) AND STATE OF

ELECTRICITY DISTRIBUTION NETWORK

INSPECTION REPORT FOR QUARTER FOUR OF 2017

JANUARY 05, 2018

iii

CONTENTS

CONTENTS ................................................................................................................ iii

LIST OF FIGURES ................................................................................................... v

LIST OF TABLES ................................................................................................... vii

ABBREVIATIONS ............................................................................................... viii

1 EXECUTIVE SUMMARY ........................................................................................ 1

2 INTRODUCTION ............................................................................................. 6

3 STATEMENT OF COMPLIANCE WITH STATUTORY PROVISIONS ............. 7

4 OBJECTIVE(S) OF THE INSPECTION .................................................................... 11

5 METHODOLOGY ............................................................................................... 12

6 EXTENT OF THE DISTRIBUTION NETWORK AND KEY FINDINGS FROM

THE FIELD INSPECTION ................................................................................... 13

6.1 Extent of the distribution network ................................................................ 13

6.1.1 Installed substation transformer details and their capacities ........................ 13

6.2 State of the distribution network ................................................................... 17

7 CHALLENGES .............................................................................................. 21

8 RECOMMENDATIONS ................................................................................. 23

9 CONCLUSION AND GENERAL OBSERVATIONS ........................................ 25

10 REREFENCES .............................................................................................. 28

11 FIELD INSPECTION FINDINGS ........................................................................ 29

11.1 SUBSTATIONS ..................................................................................................... 29

11.1.1 NORTHERN REGION ................................................................................................................... 29

11.1.2 EASTERN REGION ........................................................................................................... 32

11.1.3 WESTERN REGION ..................................................................................................................... 44

11.2 DISTRIBUTION LINES ........................................................................................... 60

12.2.1 NORTHERN REGION ....................................................................................................... 60

11.2.2 EASTERN REGION ........................................................................................................... 63

11.2.3 WESTERN REGION .......................................................................................................... 66

11.2.4 CENTRAL REGION ........................................................................................................... 68

iv

11.3 NON NETWORK ASSETS-OFFICE BUILDINGS,LAND AND

VEHICLES ...................................................................................................................... 69

ANNEX: SELECTED PHOTOS OF PARTS OF THE DISTRIBUTION ASSETS .................... 73

SUBSTATIONS ................................................................................................................ 73

DISTRIBUTION LINES ................................................................................................. 78

Non Network assets –Buildings, Land and Vehicles ........................................ 82

v

LIST OF FIGURES

Figure 1 Substation locations on the network ............................................ 18

Figure 2 Ground Mounted transformers in Central Region ........................ 19

Figure 3 RMUs locations in Central region ................................................ 20

Figure 4 Ishaka substation under refurbishment anr reconfiguration ........ 73

Figure 5 Plinth at Mbale substation where the 10/14MVA;33/11kV UIA

transformer was removed .......................................................................... 73

Figure 6 Faulty and bypassed Line Isolator for BECS 33kV line at Fort Portal

substation................................................................................................. 74

Figure 7 Damage on Fort Portal substation fence inflicted by poles storage 74

Figure 8 Kasese substation transformer with PCB Oil ................................ 75

Figure 9 Non-decommissioned Oil CB at Mubende substation ................... 75

Figure 10 Jinja Industrial substation abandoned switchgear never

commissioned ........................................................................................... 76

Figure 11 Kabale substation 48V DC battery bank in control room with the

switchgear despite plant house extension to have them separated ............. 76

Figure 12 Weed clearing at Mbarara Central Substation ............................ 77

Figure 13 Faulty Biometric Access Control Unit at Mbarara Central

Substation Main Gate ............................................................................... 77

Figure 14 Capacitor bank at Jesa Farm,Busunju well maintained ............. 78

Figure 15 Mwenge and Mukunyu 11kV feeders bridged at this structure,

with one of the feeder cables recovered! ..................................................... 78

Figure 16 Rotten structure with broken x-arm on Kiriri-Mityana 33kV

interconnector........................................................................................... 79

Figure 17 Underground cable installation for the new 33kV feeder to BMTS

at Mbarara ................................................................................................ 79

vi

Figure 18 Kyankwanzi T-Off on Busunju - Hoima 33kV Interconnector,work

in progress(WIP) to replace decayed poles .................................................. 80

Figure 19 Kisoro-Katuna border-stays vandalized and poles rotten ............ 80

Figure 20 Structure 130 on Bweyale T-Off on Masindi - Apac 33kV

interconnector with missing insulators and burnt-off top part of the pole .. 81

Figure 21 Seemingly disused Sectionaliser at Masindi Port on Masindi-Apac

33kV interconnector.................................................................................. 81

Figure 22 Kisoro Office(rear view) having drainage issues .......................... 82

Figure 23 Mbarara Central S/S land with a threat of grabing .................... 82

Figure 24 Hoima Office fully refurbished ................................................... 82

Figure 25 Kisoro Office(front view) ............................................................. 82

Figure 26 Truck found broken down on 23/10/2017 and left at Mubende

substation................................................................................................. 83

vii

LIST OF TABLES

Table 1 Inspected substation transformer details and capacities................ 13

Table 2 Extent of the distribution network as at October 2017 .................. 15

Table 3 Summary of network growth over the quarter ............................... 16

Table 4 Modifications on distribution transformers .................................... 17

viii

ABBREVIATIONS

ABC:

Aerial-Bundled conductor

ABS: Air Break Switch

CAPEX:

CB:

CEDAT

Capital Expenditure

Circuit Breaker

College of Engineering Design Art and Technology

DO: District Office

ERA: Electricity Regulatory Authority

FDI:

GIS:

Foreign Direct Investment

Geographic Information System

GoU: Government of Uganda

HV:

IC

High Voltage

Integrated Circuit

KV: Kilo Voltage

KVA: Kilo Volt-Ampere

LAA: Lease and Assignment Agreement

LV: Low Voltage

MVA: Mega Volt Ampere

MV:

O&M:

Medium Voltage

Operations and Maintenance

REA: Rural Electrification Agency

ix

R & R:

R/L:

Restoration and Rehabilitation

Route length

SHE: Safety, Health and Environment

UEDCL: Uganda Electricity Distribution Company Limited

UGX:

UETCL:

UIA:

Uganda Shillings

Uganda Electricity Transmission Company Limited

Uganda Investment Authority

VFM: Value for Money

VHF: Very High Frequency

VM: Vegetation Management

1

1 EXECUTIVE SUMMARY

Clauses 2.16 (a) & (b) of the LAA obligates UEDCL, as Lessor or

Owner of the Distribution System to continuously monitor the

restoration and reinforcement (R & R); repair , maintenance,

operation, installation and retirement, and modifications carried

out on the Distribution System by Umeme Limited, as the

concessionaire. If, in the course of any inspection UEDCL

discovers that any of the Distribution System is in any material

respect defective or non-conforming with the requirements of the

LAA, Umeme shall take prompt corrective action.

Clause 2.14(a) (i) of the LAA requires Umeme, as the

Concessionaire to operate and maintain the Distribution System

in all material respects in accordance with Prudent Utility

Practices.

Clause 2.17 of the LAA requires Umeme to provide a complete set

of plans, specifications, as built drawings and similar documents

with respect to the distribution system to UEDCL reflecting the

as-built condition of any modifications, where the distribution

system has been altered pursuant to the modifications.

Due to these statutory requirements among others, UEDCL

carries out quarterly inspections of the electricity distribution

system and reports on its state of operation and maintenance. As

such, Quarter four inspection was carried out from 10 th October

to 1s t December 2017 with regard to the afore-mentioned clauses

of the LAA.

2

Key highlights of the inspection findings are as follows:

The 10/14 MVA, 33/11kV transformer S/N:19010873/01- that

had been on soak for a long time at Mbale substation is still

missing; but Umeme explained that the transformer was

decommissioned on behalf of the UIA; following a disposal by UIA

and handed over to NEK consults to whom it had been sold and

taken to an unknown location;

The removal of the formerly soaked 10/14MVA transformer at

Mbale substation was un called for; given the emergent need for

capacity upgrade (Umeme should have been offered to buy it

instead of selling it to a private firm);

The installed biometric access control system that is malfunctioning

in most substations never catered for upgrading the existing DC

system. The DC system for protection should be separated from the

one for SCADA and Access Control for enhanced reliability of the

substation equipment;

At some substations such as Rugombe substation,there exists

unreliable communication link to enable reliable operation of the

Biometric access control system. Access opening has been denied for

the last three(3) consecutive quarters/times;

A significant number of distribution transformers in Central region

have been noted either recovered from their structures or isolated or

requiring maintenance attention. An example is a transformer at Koko

Primary School 25kVA transformer on Bombo-Namulonge 11kV feeder

which faulted and has not been attended to in the last 2 years. Koko

Village proposed investment in 2012 meant for an upgrade to 50kVA

while replacing the faulty one at the school was not visible on the

ground,though posted as executed;

Whereas most of the distribution transformers in Central region are in

good state of maintenance, a good number also exists that portrays oil

3

leakages, corroded/rusted terminations, leaning structures, loose

connections,vandalised and signs of flashover among others;

Whereas most feeder pillars in Central region are well maintained,still

a significant number is either damaged,decommissioned or rusty.Most

feeder pillar cages are well maintained but still a number of them are

either damaged/vandalised or missing requiring maintenance

attention. The locks are either okay,damaged/vandalised or missing in

equal proportions;

Apart from three(3) Ring Main Units(RMU) in Central Region which

have signs of burning and dangerous,the rest of the 119 RMUs are in

good state of maintenance. 10 cages for these RMUs are either

damaged or missing. Terminations/connections on two(2) RMUs are

showing signs of burning at Uganda Rail Station Gargens 1 and

nasser Road(Sayuni Plaza) where the installation is exposed and

dangerous. The locks on some of these RMU cages are missing, hence

prone to un authorised access and operation;

Whereas the majority of the MV poles in Central Region are in good

condition, a number of them are characterised by being rotten,

hollow,cracked and leaning. Some cross arms are equally

damaged,cracked or bent while a number of insulators require

maintenance attention;

There is notable tendency of keeping materials meant for storage

within the substation premises or environs. Damage to the substation

fencing has been inflicted upon as a result;

Vegetation control is lacking in some of the subatations and on some

overhead structures. An example is the the ground mounted

transformer behind CEDAT at Makerere University that is

permanently covered up by shrubs;

Some equipment lies idle without offering any value addition (such as

the ABB switchgear at Jinja Industrial substation has never been

commissioned since installation many years ago) while some

4

malfunction soon after commissioning. Umeme still indicats that the

switchgear is pending repair by the supplier;

UEDCL land where equipment/buildings are located threatened by

possible encroachment requiring urgent attention to open boundaries

and have them secured.Umeme in advanced stages of engaging a

surveying firm that will handle the boundary opening and subsequent

fencing off of these properties;

There are noted significant changes on the network and asset

movements that are not communicated to UEDCL, especially

distribution and power transformers;

Some non-network assets including land and buildings not given

requisite attention to ensure full utilization and proper maintenance;

Quality of poles installed on the network that decay very rapidly and

have to be replaced well before their anticipated service life of at least

15 years is still an issue;

Vandalism of network assets, especially transformers and stay

assemblies, is still persisting and affecting integrity of the network and

increasing maintenance costs. Vandalism of stay assemblies has

increased noticeably!;

Cases of poor workmanship, and/or negligence, still continue to be

encountered on parts of the network, e.g. poorly plumbed poles,

shabby joints, especially on LV network, shabby transformer wiring;

Despite continuous assertion that SCADA is now fully operational,

many substations up country still experience intermittent, or zero,

connectivity, and staff are forced to continue carrying out operations

manually;

Access control system was installed on some of the substations

without due care to rehabilitate the gates and fencing, rendering the

access control systems useless, and raising the issue of value-for-

money of the installed systems;

5

Disused items on the network need to be either re-deployed or

disposed of as necessary. For example there is a sectionaliser at

Masindi Port and a Nulec CB in Apac, all on Masindi – Apac 33 kV

interconnector, which have been left on the line for a while but seem

not to be in use for unknown reasons;

Most feeder pillars in Central Region appear not to have been

maintained in a very long time and not properly secured. The locking

mechanisms are either missing or vandalized. Many of the cages for

these installations are bushy and require routine maintenance. Some

of the feederpillars in dire need of maintenance include Nakawa

Vocational Institute, World Food Program, Rwenzori Plastics,Bukoto

Brown Flats, Metropolitan Holdings, Luthuri Drive Plots 4,9 & 26,

Luthuri Avenue Plot 108, Pipeline Design and Foam Indusries,G4

Security, Ericson 2, Mengo Hospital, West Mengo Growers, East

African Seeds Uganda Limited,Galukande Close Terrace Gardens,

Kisenyi, Agha Khan Primary,Wandegeya Police, Mulago Hospital,

Martin Road, Luzira Upper Prison and Family Bakery among others.

6

2 INTRODUCTION

The Government of Uganda (GoU) privatized UEDCL through a 20 year

concession by bringing on board private investors in the electricity

distribution and supply business in order to:

Attract Foreign Direct Investment (FDI);

Improve the quality of service;

Rehabilitate, upgrade and expand the distribution network; and

Increase the electricity access to other customers in the country.

The electricity distribution and supply business was subsequently

transferred to Umeme on 1st March 2005 after signing a Lease and

Assignment Agreement (LAA) that leased the distribution assets to Umeme

to carry out electricity distribution and supply business.

The agreement specifically stipulates investment obligations by Umeme

during the initial period and the first five years of the concession. As part of

the agreement, Umeme was obligated to make an investment of a minimum

of USD 5 Million during the initial period and a minimum of USD 65 Million

in the first 5 years in system rehabilitation and reinforcement(R&R). This

obligation was full filled but a lot needs to be done on the electricity

distribution network to further enhance its efficiency. Despite the initial

agreement terms (Section 2.1(d)) restricting the system rehabilitation and

reinforcement plan over the first 5 years, which was subsequently extended

for a further period of 3 years, R&R has to date turned out to be a routine

activity.

With reference to Clauses 2.16(a) & (b) of the LAA that provide for rights of

access to the assets as Lessor to observe the Restoration and Reinforcement,

repair and maintenance, installations and retirement plus modifications,

UEDCL and Umeme staff jointly inspected the distribution system to

establish the status of the assets for the period October to December 2017.

7

3 STATEMENT OF COMPLIANCE WITH STATUTORY

PROVISIONS

The following table highlights critical provisions of Supply and Distribution

License and the Lease and Assignment Agreement (LAA) and the

corresponding compliance levels by Umeme Limited.

Section/

Clause

Critical Compliance

Issue(s)

Remarks

S2.16

(a) &(b)

UEDCL and its authorized

representatives shall have

the annual right to inspect

the Distribution System

(including installation of the

Modifications).The Company

shall comply with all

reasonable requests of

UEDCL for, and assist in

arranging any such

observation visits

Umeme Limited has continued

to give access to the

distribution system and

actively participated in the

scheduled quarterly inspection

exercise being reported on.

S2.9(b)& (c) All modifications on

portions of the Distribution

Network to be registered in

names of UEDCL

Umeme Limited does not

regulary update UEDCL on the

Asset Movemets schedule. A

number of Power &

distribution transformers are

found either relocated or

decommissioned without

notifying UEDCL. An example

is the decommissioned

10/14MVA transformer

formerly at Mbale

substation.

8

The Company has consistently

not informed UEDCL of all

modifications carried out on

the distribution network.

Most modifications are not

registered in the names of

UEDCL.

S2.16(e) Company to furnish UEDCL

with information concerning

the Distribution System as

and when requested

The Company does not readily

furnish some information, in

the required formats, as and

when required by UEDCL.

Some pieces of information in

this category include Request

made on Katale Clays

Factory Tx on Kajjansi-

Lubowa 11kV feeder where

customers are constantly

complaining of poor QoS

amidst system improvement

executed in 2016. Requests

made to Umeme staff on

8/9,18/9 & 20/11/2017

with no feedback todate.

This raises an issue of non-

complaince to information

provision.

S2.16(b) If, in the course of any

inspection UEDCL discovers

that any of the Distribution

System is in any material

respect defective or

nonconforming with the

requirements, the Company

shall take prompt corrective

action

In some situations, no

corrective action has been

taken despite the outcome and

recommendations of the

consecutive inspection reports.

The status in some of these

situations has remained the

same despite the need to have

them attended too.

9

S3.10(a) UEDCL has the right to

repossess, occupy and

operate portions of the

Distribution Network

deemed abandoned by the

Company. Company to

reimburse UEDCL O&M

costs incurred.

There are items and portions of

the distribution network

(example of LV network in

Apac areas), land in Mpala,

Kakiri, Ntungamo and those

that formerly hosted VHF radio

stations like at Katera, Hoima,

Masindi, Fortportal, Kasese,

Mubende among others &

some civil structures like

Masindi offices, Fortportal

office building among others)

which appear neglected but

which Umeme has not formally

pronounced itself on its non-

interest so that UEDCL can

repossess them.

S2.17 Company to provide to

UEDCL a complete set of

plans, specifications, as

built drawings and similar

documents with respect to

the distribution system

reflecting the as-built

condition of any

modifications, where the

distribution system has

been altered pursuant

to the modifications.

There are modifications carried

out on the network in the

spirit of line diversions.

UEDCL is not notified of these,

and worse still no associated

documentation is provided to

inform the new network status

and acquired wayleaves to

avoid possible litigation. A

number of wayleaves

complaints have been received

in this respect.

Umeme shared with UEDCL a

copy of the scheduled

10

maintenance activities on the

distribution network for 2017,

in line with the requirements

of the LAA. This is

commendable and

maintenance progress reports

would add value if shared.

There are also provisions in the ERA Electricity Investment Approval and

Verification Guidelines (March 2013) that the Company(Umeme Limited)

should comply with in order to hasten and smoothen the investment

verification process. Highlights are as follows:

Clause 4, part 8: All investment plans in areas held under concession

arrangement shall be submitted to Authority under copy to Asset Owner.

Umeme presented a copy of proposed 2018 investments to UEDCL and

this is commendable.

Clause 5: Asset Owner must confirm reasonableness of investment value

estimates before implementation by Company. The Company presented

cost outlines of proposed 2018 modifications to the distribution

network to UEDCL for appraisal prior to implementation. This trend

should be sustained.

Clause 5: Asset Owner must assess and confirm viability of proposed

technologies to be deployed in investments proposed by Company. The

Company has not been presenting detailed designs of proposed

modifications to the distribution network to UEDCL for appraisal prior

to implementation.

11

4 OBJECTIVE(S) OF THE INSPECTION

The objectives of inspecting the electricity distribution system were to assess

and report on the following:

Observance of Prudent Utility Practices in the Operation and

Maintenance of the electricity distribution network as provided for in

Electricity (Primary Grid Code) Regulations, 2003;

Asses the distribution system for the requirements in the Electricity

(Transmission and Distribution) Investments Approval and Verification

guidelines, hence provision of accurate and complete information as a

means of making the investment plans more streamlined, targeted and

agreeable to stakeholders;

Scope and level of implementation of the Umeme 2017 Quarter 4 planned

asset maintenance plan;

Location and current state of the distribution system components

including substations, electricity distribution lines, unoccupied land,

integrity of the way leave corridor and buildings;

Collection of GIS based data on existing specific assets and their state

with the aim of furnishing the GIS database with accurate and complete

data to facilitate spatial data analysis for enhanced decision making;

Sharing with Umeme field teams the prevailing field asset conditions and

appropriate intervention measures necessary for their maintenance in

order to keep the distribution system in a fairly operational state;

Establishing the status of the assets where capital investments have been

carried out in order to ensure quality of the works over a period of

time,hence value for money;

Assessing the level of compliance in regard to action points agreed upon

in the previous inspection cycle(s).

12

5 METHODOLOGY

Guided by the Umeme 2017 shared maintenance plan and previous

inspection findings, parts of the distribution network were inspected in

Central,Western, Eastern and Northern regions of the country. The focus

was to establish the asset management practices on the distribution system

in line with the planned maintenance activities for 2017, their scope,quality,

conformity to prudent utility practices and adherence to the provisions of

Supply and Distribution Licence and the Lease and Assignment Agreement

as a result of Repair and Maintenance activities. The major focus was put on

substations, MV and LV Lines, way leave corridor, vegetation control, office

buildings and storage yards. Note was also taken of any on-going grid-

extension works or modifications.

The approach for obtaining relevant information was physical inspection and

interaction of technical personnel from both UEDCL and Umeme Asset

Management Department that accompanied UEDCL staff in the exercise.

Snapshots were also taken to accompany the technical description of the

findings, some of which have been included in the last part of this report.

13

6 EXTENT OF THE DISTRIBUTION NETWORK AND KEY

FINDINGS FROM THE FIELD INSPECTION

6.1 Extent of the distribution network

6.1.1 Installed substation transformer details and their capacities

(a) The following table shows the details of the respective power

transformers installed at individual substations(as at the time of the i

nspection) and their corresponding capacities.

Table 1 Inspected substation transformer details and capacities

# TxNAME TxMake TxSNo TxModel Mfg Year

Size

1 Njeru Substation Tx Crompton Greave

ET10046/1

ET10046 2016-06-30

10/14MVA

2 Jinja Industrial TX1 ABB 2016-06-30

10/14MVA

3 Kamuli Substaion Tx ABB 7233 57233 2016-

07-01

2.5M

VA

4 Kaliro Substation Tx Pauwels

Trafo

85406

6

DRS25/7

0

1985-

12-31

2.5M

VA

5 Iganga Substation Tx Emirates 19010

10701 IEC60076

2016-

07-01 5MVA

6 Magamaga

Substation Tx Aichi

94223

35

T3-

216765

2016-

07-01

2.5M

VA

7 Entebbe Substation

Tx2 Emirates

19010

10602 IEC60076

2005-

01-31

10/14

MVA

8 Entebbe Substation Tx1

Emirates 1901010601

IEC60076 2016-07-11

10/14MVA

9 Kisubi Substation Tx1

Energo invest

368277

IEC76/1980

1990-01-31

5MVA

10 Kisubi Substation Aux Tx

Aichi 942235202

IEC76/1993

2016-07-11

160KVA

11 Kajjansi Substation Tx1

Aichi 9422337

IEC76/1993

1995-01-31

5/7MVA

12 Lubowa Substation Tx2

Crompton Greaves

ET10126/4

IEC600/76

2012-01-31

10/14MVA

13 Lubowa Substation Tx1

Crompton Greaves

ET10126/3

IEC60076 2012-01-31

10/14MVA

14 2.5 MVA Tx In Storage Kampala South

Energo

invest 68283

RT2500/2

500/830

1990-

07-11

2.5M

VA

15 Kampala South Substation Tx

Crompton Greaves

ET10047/1

ET10047 2011-01-31

15/20MVA

16 10/14MVA Tx1 in Storage Kampala

South

ABB VN01123

VN01123 2016-07-11

10/14MVA

14

# TxNAME TxMake TxSNo TxModel Mfg

Year Size

17 5 MVA Tx In Storage Kampala South

Energo invest

112520

5MVA

18 5 MVA Tx In Storage Kampala South

Energo invest

68280 5MVA

19 Gaba Substation Tx1 Power 120521

SFZ9-14000/33

2012-06-12

10/14MVA

20 Gaba Substation Tx2 Power 112619

SFZ9-14000/33

2012-06-12

10/14MVA

21 Kisugu Substation Tx

Power 120421

SFZ9-14000/33

2012-06-12

10/14MVA

22 Ntinda Substation TX1

Energo invest

68268 IEC76/1980

1990-01-31

10/14MVA

23 Ntinda Substation Tx2

ABB VN01120

IEC60076/7

2015-01-31

10/14MVA

24 Kireka Substation

Tx1 Emirates

19010719/04

IEC60076 2008-

01-31

10/14

MVA

25 Kireka Substation Tx2

Emirates 19010719/0

1

IEC60076 2016-07-13

10/14MVA

26 Port bell Substation

Tx1 ABB

VN011

19 VN1119

2016-

07-11

10/14

MVA

27 Port bell Substation

Tx2 Aichi 68273 1990 5MVA

28 Mityana Substation

Tx2 ABB 57231

2.5M

VA

29 Mityana Substation Tx1

ABB 57235

2.5MVA

30 Busunju Substation Tx1

Energo invest

68284

2.5MVA

31 Busunju Substation Tx2

Powels Auto

00-2-4026

5MVA

32 Mubende Tx Brush 77123

1MVA

33 Moniko Substation

TX1 ABB

15/20

MVA

34 Moniko Substation

TX2 ABB

15/20

MVA

35 Mbale Substation TX2

Emirates

19010

719/03

10/14 MVA

36 Mukono Substation TX1

ABB VN0112

1 IEC61869-2

10/14 MVA

37 Mukono Substation TX2

Crompton Greaves

ET10046/2

IEC60076 10/14 MVA

38 Kayunga Substation

Transformer

Aichi

Electric

94223

3601

IEC76(19

93) 5MVA

15

# TxNAME TxMake TxSNo TxModel Mfg

Year Size

39 Nile Breweries Substation TX1

Pauwels 98.2.4068

IEC_ (1999)

14MVA

40 Jinja Industrial Substation TX1

Pauwels 98.2.4067

IEC_ (1999)

14MVA

41 Jinja Industrial Substation TX2

ABB VN01122

IEC 61869-2

10/14MVA

42 Kaliro Substation Pauwels 2.5MVA

43 Kamuli Substation TX

ABB 57233 5MVA

44 Kiriri Substation Tx1 Pauwels 85.40668

2.5MVA

b) The following statistics give the extent of the electricity distribution

network in terms of distribution transformers and distribution lines as at

October 2017.

Table 2 Extent of the distribution network as at October 2017

Specification of distribution grid assets leased by Umeme

Ltd

Distribution Transformers

Q 3 - 2017 Power Lines (Route length)

Current

Total Overhead Underground

Size kVA Status

km km Km

4 1

Street lights 595.2 507.4 87.8

6 206

Low voltage 19293.86 19269.595 24.267

15 2

11kV 6085.86 5996.9 88.96

16 141

33kV 7634.43 7602.58 31.85

25 990

50 3851

63 2

80 1

100 2414

150 18

160 3

200 1955

250 13

300 22

315 1198

16

400 8

500 825

600 4

630 71

750 29

800 14

1000 11

1250 1

1500 1

Total 11781

Source: Umeme Limited

The network extent is as shown in Table 3 with street lights at 595.2km,

Low voltage at 19293.86km,11kV at 6085.86km and 33kV at 7634.43km.

Table 3 Summary of network growth over the quarter

Q2 Q3 GROWTH

Street Lights 507.4 595.2 87.8

Low Voltage 18941.65 19293.86 352.21

11kv 6125.1 6085.86 -39.24

33kv 7482.88 7634.43 151.55

A quick analysis of the network summary statistics reveal that there was a a

slight growth of the network in terms of the street lights(17.3%),low

voltage(19.1%) and 33kV(2%) while the 11kV network reduced by 39.24km

(0.64%). The extent of 11kV network decommissioned is quite significant

and UEDCL was not notified as required of Section 2.17 of the LAA.

The growth in the number of distribution transformers over the quarter is

indicated in the following summary table

17

Table 4 Modifications on distribution transformers

Transformer Size

Growth (+/-)

Comment

6kVA -11 As required of Section 2.17 of the LAA, all these

modifications (their motivation,approval and

implementation details) have not been formally

communicated to UEDCL, unless they are

encountered during the future process of

Investment Verification or adhoc inspection of the

distribution network.

16kVA +2

25kVA +15

50kVA +14

100kVA +24

200kVA +23

315kVA +1

500kVA +8

630kVA +1

As noted in the previos network inspections,distribution transformers

continue to be installed either by Umeme Limited or Contractors in private

premises and enclosed as such. The mothod of segregating these

transformers to reflet their ownership(whether private or UEDCL/UMEME)

is not clear and pose a risk of overstating their numbers(and associated

asset value) on the asset register. How are these privately enclosed

transformers maintained as per the prudent utility requirements? How is

their improper or lack of maintenance effects controlled not to propagate to

the healthy network? Who caters for their negative effects onto the backbone

infrastructures interms of Quality of Service(such as losses,harmonics,etc)

and outages in the event of failure? What strategic plans are in place to

accommodate the ever increasing number of private installations/demand

and long term O& M plans amidst this largely private dominated

distribution network?

6.2 State of the distribution network

a) The following map presents the location of individual substations on the

network. It represents a total of 72 substations with 58, 33/11kV and 14,

132/33kV substations. Umeme/UEDCL takes responsibility of 33kV and

below volgate apparatus implying that it has a shared responsibility of

18

maintaining the 33kV switchgear at the 14, 132/33kV UETCL

substations.

Figure 1 Substation locations on the network

19

b) Substations in Central,Western,Northern and Eastern regions were

inspected with reference to the the previous inspection findings in

Quarter 2 & 3 and 2017 maintenance plan, hence a need for follow up on

the action plans.

c) Detailed findings of the inspected substations are in Section 11.1 of this

report.

d) A selected number of distribution lines were inspected and detailed

findings are in Section 11.3 of this report.

e) The following figure shows the population of ground mounted

transformers in Central Region and their areas of deployement in terms

of Umeme Zoning/Districts.

Figure 2 Ground Mounted transformers in Central Region

The biggest population is noted around Metro,Banda,Kitintale,

Kabalagala, Natete, Nakulabye, Wandegeya, Mukono, Entebbe and

Najjanankumbi. This implies that the associated underground

20

cables,feeder pillars,mini-pillars are equally significant and require

regular maintenance attention and upgrade to accommodate the ever

growing demand. It is inevitable that most of the underground network

routes have been constructed upon uncontrolled and maintenance of this

infrastructure is now a challenge. Some cable routes cannot even be

traced!. Section 1 of this report highlights their state.

f) The following figure shows the population of Ring Main Units(RMUs) and

feeder pillars which form a critical component of the underground

network around the Central Business District.

Figure 3 RMUs & Feeder Pillar locations in Central region

Most RMUs are located within Metro, Wandegeya, Kitintale, Nakulabye

and Banda. The state of these RMUs is already highlighted in Section 1 of

this report, with 10 of 119 RMU’s either having damages cages or

completely missing. 3 RMU’s had signs of burning.

21

7 CHALLENGES

i. The state of some of the assets cannot be verified due to their

locations being very sensitive places where access is very restricted.

Some of these locations include security premises(such as the

barracks among others) and private premises that are highly guarded;

ii. UEDCL is not regularly updated and/or notified of

modifications/extensions to the distribution network, carried out

operationally or sometimes by third parties, making it difficult to keep

track of the full extent of the network;

iii. Arising from the above,and due to non realization of the asset

movement schedules, it is hard to accurately establish the true extent

of the network and also track the extent of modifications made;

iv. There is no respect and control of the wayleaves corridor for the

established electricity distribution infrastructure to the extent that

buildings have either been constructed under the lines or ontop of the

underground network. This act that is noted all over the country has

resulted into a risk of litigation in some areas;

v. Lack of Asset movement schedules to easily determine the history of

certain assets regarding their deployment on the distribution system;

vi. Distribution transformers not segregated to exclude the privately

installed/owned ones hence pose a risk of overstating their numbers

which in turn affects the accuracy of the asset register;

vii. Inadequate information on non-network assets such as the fleet

renders accurate reporting on its state and composition futile;

viii. Some assets are not registered in the names of UEDCL although they

are submitted to constitute the asset register;

ix. Insufficient information to inform on the exact boundaries of UEDCL

land at the offices, substations and former VHF Radio station sites;

22

x. Lack of appropriate data capture tools (such as range finders for

assets located in inaccessible locations) and measurement tools (such

as Clamp on meters,earth resistance testers,insulation testers) for

testing the utilization and quality of the installations.

23

8 RECOMMENDATIONS

Based on the field findings and in line with the requirements of the Supply

and Distribution License, LAA and prudent Utility Practices, it is

recommended that the following be considered:

a) The removal of the formerly soaked transformer was un called for;

given the emergent need for capacity upgrade. Umeme should have

been offered to buy it instead of selling it to a private firm;

b) A report be provided highlighting the underlying information and

subsequent decision of declaring some of the transformers on the

distribution system private,with their corresponding location and

nameplate details;

c) Due attention should be given to non-network assets such as land and

buildings, to ensure full utilization and proper maintenance. Else they

should be formally handed back to UEDCL to either use them or dispose

them off as the case may be;

d) As provided for in Section 2.16 of the LAA, and in order to maintain the

integrity of the Asset Register, Umeme should regularly notify UEDCL of

all additions, modifications, transfers of assets on the distribution

network including those implemented during O&M activites;

e) Distribution transformers should be segregated to exclude privately

deployed transformers to avoid a risk of overstating their numbers on the

asset base/register and inaccurate reporting which in turn affects

accurate reporting on investments made for purposes of earning a return;

f) Non-functional equipment on the distribution network(such as the ABB

switchgear at Jinja Industrial substation that has never been

commissioned since installation),faulty and malfunctioning

switchgear(along the lines and in substations such as at Mityana and

Mukono substations among others) that are not serving their purpose,

24

yet form part of the asset base, should either be made fully functional or

retired and disposed off;

g) Preserve the integrity of the way leave corridor. Notification should

always be made to the asset owner and documentation availed

concerning network modifications and the wayleaves status of the new

routes after the network is relocated;

h) Apparatus that is faulty, recovered/or bypassed (such as Mukunyu 11kV

CB and feeder cable at Rugombe substation, faulty tap changers at

Mubende substation, switchgear at Mityana and Mukono

substations,unused sectionaliser at Masindi Port, Nulec CB in Apac on

Masindi-Apac 33kV interconnector, distribution transformers at Katera

trading centre,Uganda House and Charm Towers lacking maintenance

among others should me maintained and/or restored into service;

i) Due diligence and professionalism either by Umeme teams,or contractors

when carrying out maintenance should be addressed to eliminate the

seemingly lackstur work practices that is contributing to the

deterioration of the network,even in areas where remedial works have

been carried out.

25

9 CONCLUSION AND GENERAL OBSERVATIONS

i. Efforts have been made to refurbish a number of substations and MV

overhead distribution network. Corresponding attention should be

attached to upgrading the underground network due to load growth.

Comprehensive maintenance of RMUs, Feeder pillars, ground mounted

transformers’ enclosures and some ground mounted transformers

housed in the basement of some acades(such as Charm Towers,Uganda

House) should routinely be carried out to keep the installations as

required of the prudent utility practices;

ii. There is rampant use of links as opposed to standard fuses/circuit

breakers for both HT and LV protection on many transformers and on

some overhead points(T-Offs).This endangers the life span of the

equipment hence non-complaince to prudent utility practices. Most

switchgear on overhead lines(that is air break switches,load break

switches Drop Out Fuses, Knife blade links) are noted faulty and by-

passed;

iii. The supply and distribution license to Umeme provides for an exclusive

right to supply electricity in an area up to one kilometer radial distance

from the existing distribution lines, and an obligation to provide service

within the area of exclusivity. Network extensions that were done in

UEDCL domain by Umeme Limited in the areas of

Naabongo,Tabakonyi,Shagi and Atari should have been handed over

officially to UEDCL which was not the case;

iv. Umeme continues to decommission UEDCL/GoU assets(example being

poles, conductors and transformers) without notification of UEDCL

contrary to the requirements of Section 2.9 of the Lease and Assignment

Agreement (LAA);

v. Relatedly a number of assets continue to be added onto the network

while some are retired. In respect of non-communication of the asset

movements, UEDCL cannot guarantee the transparency of the procedure

26

followed while disposing off the retired assets and the treatment of the

ensuring proceeds so that the accuracy of the asset register is not

compromised;

vi. A threat still exists regarding land encroachment where UEDCL assets

are installed,hence a need for opening and securing of their boundaries

(such as Mityana, Mbarara Central, Kasese Central, Mubende, Mbale,

Kapchworwa substations, Masindi, Lira, Mbale, Hoima office/buildings

land and former VHF radio station sites among others;

vii. Many parts of the network continue to be extended without due

notice/information to Asset Owner, hence true extent of the Distribution

Network, as per Ownership Licence of UEDCL is not known;

viii. Despite highlighting the issues affecting the integrity of the

assets/network, some have not been attended to for unnecessarily longer

periods, contrary to Section 2.16(b) of the LAA that requires Umeme to

take prompt corrective action once a notice specifying such defect or

nonconformity has been made;

ix. A large part of the deteriorating network is attributable to poor

workmanship, and/or negligence, during maintenance or installation

works. This includes improper/incomplete scoping of work and lack of

attention to professionalism;

x. The low voltage network requires urgent attention as it is becoming

downright dangerous in many areas(such as Apac and Ndejje areas) with

low-sagging live conductors that are within arm’s reach;

xi. The level of refurbishment of the LV network does not match that of MV

and this might create a power absorption problem when the proposed

generation plants, currently under construction, eventually come on line.

A comprehensive and phased programme needs to be put in place to

raise the LV network to acceptable level of maintenance and readiness to

absorb power from generating plants being developed;

xii. Some office buildings have been refurbished with new structural

designs(such as Mbarara office),which in effect changes the Land

27

title/Lease obligations, without involvement and notification of UEDCL.

Other offices like Hoima and Rukungiri have been renovated and plans

under way to reconstruct Fort portal office which is commendable;

xiii. Umeme allowed installation/co-location of fibre optic cables on the

distribution network without notifying UEDCL. UEDCL should be

provided with copies of the agreements where the fibre is being used for

commercial purposes as opposed to Control of the distribution network;

xiv. The reliability of the network is affected by ineffective vegetation control

which in effect increases maintenance costs on replacing poles,

conductors and insulators broken by tree branches among others;

xv. DC supply at most substations where biometric access control system

was implemented is not reliable. An additional capacity to support this

function was not considered rendering the existing system unable to

support the substation in the event of a prolonged outage;

xvi. The biometric access control system installed in 2016 non-functional in

most substations. Issues noted point towards poor workmanship,non-

responsiveness of the contractor to attend to issues relating to their

operation and inadequate supervision. The system has instead become a

budden to the existing DC installation(not sized to accommodate this)

hence compromising the system protection at the substations.Umeme

should have planned for a separate DC system for SCADA and access

control,separate from DC for protection.

28

10 REREFENCES

This report should be read in conjunction with:

Report on State of Distribution Assets as at August 2017;

Umeme Investment Plans for 2017;

Lease And Assignment Agreement(LAA);

Electricity (Primary Grid Code) Regulations 2003;

Electricity (Transmission and Distribution) Investments Approval and

Verification guidelines 2013;

UEDCL Geographical Information System(GIS);

Umeme scheduled maintenance plan for 2017.

29

11 FIELD INSPECTION FINDINGS

11.1 SUBSTATIONS

11.1.1 NORTHERN REGION

Asset Description Observed Strong Aspects Observed Weak Aspects Remarks

Hoima Substation Installed capacity:

1x5MVA

33/11kV,1x1MVA 33/11kV and 1x5MVA 33/33kV

auto transformer Transformer Serial

Numbers:

68279,68288 and 9920254 respectively

All substation structures were still in good condition as from previous inspection;

Stone pitch still not well maintained; SCADA still not reliable;

Poles still stored on ground besides the substation as in all

previous inspections; Security lights not working properly

With increased rainfall weeds were beginning to grow again in

the substation.

Auto-transformer still off with faulty tap changer. Good system voltages have rendered

it redundant.

Need to build a rack for proper storage of poles

Need to make decision

whether to dispose of redundant auto-transformer, or repair

the faulty tap changer and re-deploy it

Masindi Substation

Installed capacity:

2x2.5 MVA 33/11kV transformers

Fencing, gates, yard stones,

guard house, power transformers, and all other

substation structures still okay

Signs of oil leakage on

Transformer No 1 (Energoinvest) around the

valves and breather still evident. Not clear whether the

Need to improve on the

maintenance of the substation

30


Transformer Serial Numbers: 68281 and 85.4066

respectively

leakage problem had been

addressed.

Kinyara Substation

Installed capacity:

1x 5MVA 33/11kV transformer

Transformer Serial Number:

19010720/.01

Managing weed growth in the

substation still remains a major problem

Substation drainage is also in a bad state

Newly installed battery charger powered up, but NO output

(redundant?)

Consider replacing

grass in substation with stone pitching

Need to urgently work on drainage in the

substation

Gulu Substation

Installed capacity: 2x 5MVA 33/11kV

transformers

Transformer Serial Numbers:

57.234 and 57.232

Plant house expanded to created separate battery room; ceiling

converted to concrete; climate control introduced in switchgear room.

Drainage around the substation still not worked on

Weed overgrowth still a problem, especially with increased rains.

Drainage needs to be improved to preserve

the integrity of the fence and foundations.

31


Lira Spinning Mill

Installed capacity:

2x5MVA 33/11kV transformer

Substation rehabilitated as part

of 2015 Umeme Investment plan; new plant house; cable trenches introduced; general

civil works done.

Situation still as was found in

the last inspection.

Consider improving the

transformer plinths, and drainage

Poorly installed cable runs should be

straightened out.

Kitgum Substation

Installed capacity: 1x1MVA 33/11kV transformer


62468

Switchgear and structures still

okay.

Vendors that used to hang their wares on the substation fence

had been moved away by the civic authorities.

Substation building (former

generator house) that had been fully rehabilitated was already

showing signs of deteriorating, yet under-utilised.

Substation electrical structures had been relocated to pave way

for ongoing road construction works. Remaining to relocate

the civil structures, i.e. guard-house, toilet, and fence.

While transformer was upgraded to 2.5 MVA. It is not known

where the old 1.0 MVA transformer was relocated to.

Space in existing

substation has now become restricted. To

cater for future load growth, there is need to consider acquiring

bigger land elsewhere close to the municipality where a

new substation can be set up.

Concessionaire needs to keep UEDCL informed on the movement of

Distribution Network assets without fail.

32

11.1.2 EASTERN REGION


Mbale Substation

Installed Capacity: 1x10/14 MVA 33/11kV

transformer Transformer Serial

Number:19010719/03

The Substation has a

capacity of 14MVA at ONAF.

The AC’s, On load tap changers, communication

equipment and Scada found in good working

condition.

The general housekeeping

is satisfactory.

The foundation of the fence

still has holes in several places exposing the S/S to flooding from the exterior

inundation during heavy rains.

The 10/14 MVA, 33/11kV

transformer S/N:19010873/01- that had been on soak for a

long time is still missing; but the Umeme explained that the transformer was

decommissioned on behalf of the UIA ; following a

disposal by UIA and handed over to NEK consults to whom it had

been sold and taken to an unknown location

The remaining loaded

10/14 MVA, 33/11kV transformer (S/N:19010719/03)} still

has a leakage from the

The noise that was

from within the

33KV panels that

had been declared

addressed, was

found existing

again. A smell of

burning plastic

from within the

panels should be

investigated.

The foundation of

the fence should

urgently be fixed.

The entire

substation land

still needs to be

fenced off to avoid

encroachment.

The second

transformer should

be restored to

33


cooling fin and the bleeding

valve.

Fencing of the substation

land to avoid encroachments not yet

done.

The CT changes on side of TX2 was not done as was

planned.

The Station has lost firm

capacity and no provision for N-1 contigency.

2 of 4 fans where found on

at 16.56 Hrs at a load of 9MVA.

There was a hissing noise

from the plant house and a pugent smell of burning

plastic that tok time to clear before one could enter

the Plant house.

improve on S/S

availabilty.

The removal of the

formerly soaked

transformer was

un called for; given

the emergent need

for capacity

upgrade (Umeme

should have been

offered to buy it

instead of selling it

to a private firm.

All oil leakages

need to be cured

and the bleeding

valve needs to be

properly closed/

locked to avoid oil

theft.

34


The bay from which Tx 2

was removed is not yet repaired. The disconnected

cable are hanging around in an unprofessional

mannar.

The Old Guard house

within the S/S; and the perimeter fence not yet

repaired

The first H-structure at the

S/S on Mbale Industrial 11KV and Bulangira 33 KV lines need replacement.

Bubulo Substation Installed Capacity:

1x5 MVA 33/11kV transformer ( Very old Cranford

transformer relocated from Lira spinning Mill s/s).Serial number not available

The transformer is still

marginally loaded.

The Oil Leakages were

cured.

Vegetation well controlled

using a chemical process.

Guards always found on

duty per visit.

The tap changer cannot be

automated due to the age of the tap changing equipment and mechanism

The steel toilet door still

needs to be fixed onto the hinges

No lights in the Guard

The remote control

of this substation needs more improvement.

Vegetation now being controlled

using chemical weed killer.

However regular control is still advised.

35


house and toilet.

Access Control that was installed during rthe year

2017 is not working. Gate has to be locked with a padlock as well.

Station has no water.

The guard house and toilet need

some repairs and provision of water made.

The guards

requested for power connection to the sentry house

and the toilet.

Jinja Industrial Substation

{1x10/14MVA , 33/11kV (S/N:98.2.4067)&

1x10/14MVA , 33/11kV }

Substation still generally

in a sound state with a firm capacity of 14MVA.

All the 33KV circuit

Most breakers are now in

a sound state

upon replacement of the

Kamuli 33Kv CB

The Unigear ABB

switchgear has been abandoned for a long-time;

un commissioned right from installation time. Umeme still indicats that

the switchgear is pending repair by the supplier

Kamuli 33Kv line CB yellow phase blew up and was

replaced twice so far with new ABB out door breaker. The first blew Dec 2016

and replaced on 12th March 2017; then blew

again in June 2017 and the second replacement july 2017.

The drainage in

front of the yard /plant house that

was previously causing flooding was addressed.

The AC’s where maintained and a

regular servicing provider obtained.

There is still a building

foundation bellow 5 feeders

There is a new

33KV bus being extended at the

S/S.

36


Bees are in the first H-pole

structure near th S/S.

No more spare

bays exist.

Njeru Substation Installed capacity: 1x10/14MVA, 33/11KV

transformer

Transformer Serial Number: ET10046/1

Substation still in good working condition &

properly maintained.

The annual routine

maintannce was done in July/August 2017

No firm capacity at this substation yet it is one of

the key stations serving Jinja area.

No Cable bracket at the

termination for Bukaya 11KV feeder

Feeder labels are missing

The Oil retainers are full of

water that needs emptying.

The A/C was found off in

the Scada Cubicle.

Cable trenches need covering.

The toilet needs a new door

The scheduled maintenance was

carried out in July 2017.

Firm capacity

should be created at the substation.

The insulation of the line droppers

should be improved.

The eminent illegal access provision

along the fence was locally blocked with logs.

Nalubaale Power Station 33Kv switch yard

The yard is well kept with

new stone pitching

Industrial 2 breaker was

replaced with a new SIEMENs out door breaker.

Njeru feeder CB replaced

The Mulco 33KV breaker

has a cracked bushing.

The cause of the

crackimg of the breaker bushings should be

investigated.

The strict security

routine at the

37


with a new ABB out door

breaker.

Nalubaale main

gate encumbers access by the operational staff

from Umeme

Iganga Substation

Installed Capacity: 1x5MVA 33/11kV transformer

Serial Number:1901010701 Emirates Transformer.


okay and well kept;

The JICA switchgear is still robust and

performing well.

Existing equipment house

still needs de- congesting

and protection from water ingress

The alternate access to

substation is still blocked by a potential developer.

There are still prominent signs of oil leakage from

the power transformer bushings and coolers..

The state of the

equipment house

should be improved urgently.

The oil leakages

should be stopped.

Kaliro Substation

Installed capacity: 1x2.5MVA 33/11kV

transformer


okay.

Transformer still less than

50% loaded.

Substation hosts the

infeed from Kamuli sugar.

S/S has one spare 33KV

panel.

Drainage issue marginally

addressed; access road floods during rainy session

impairing acess.

The termination of the

coaxial cable to the communication cubical not

yet done;

Scada not yet

commissioned;

Vegetation not well

The substation

entry is still flood prone.

Vegetation control

using weed killer like Ambush needs

to be more regular.

Regular AC

servicing needed.

38


managed; all the stone

pitching coverd by grass.

Proper and clear labelling

of the panels needs to be done urgently done.

One AC’s found off and a

reset failed.

One 11KV bay still faulty.

Improve stone

pitching with smaller stones.

Kamuli Substation Installed Capacity:

1x2.5MVA 33/11kV transformer Serial Number:57233

Substation still in good working condition &

properly maintained.

The 11Kv Cables raised away from the coolers and

put on a new gantry.

The pit latrine has been

repaired.

All the ACs now working

after proper maintenance.

The battery room was

extended

There is no water at the Substation.

Vegetation control is poor

Stone pitching not well

done.

No proper system diagram

in the S/S.

Drainage within the

Substation is poor

The vegetation control should be

regular.

Water should be

installed.

A proper system diagram should be

installed.

Drainage within

the Substation should be further

improved to avoid silt.

The AC units need urgent regular

servicing.

39


Security lights

need regular check-up for

functionality.

Nagongera Substation Installed Capacity:

1x2.5 MVA 33/11kV transformer

Serial Number:51750/1 from Soroti Substation

Substation still okay.

All the equipment found

in a sound state; apart from AVR.

AVR found off; with Tap stuck at 5.

Some minor Vegetation found existing.

Most securing lights reported by guards as not

working.

S/S has no water source.

Restored substation still

okay.

Vegetation control

with weed killer needs to be more

regular

Tororo Rock Substation Installed Capacity:

1x5MVA & 1x2.5MVA 33/11kV transformers

Serial Numbers: 68274 & 68285 respectively

Substation still okay.

All the equipment found in a sound state.

One 11KV 8BK20 spare CB exists.

The house keeping in terms

of cleaning was still poor.

Some minor oil leakages at

the Top conservator Tank and bottom main Tank valve observed.

No proper safe parking provision for operational

vechicles. One has to reverse into the main road

at a risk.

The entire

substation land still needs to be fenced off to avoid

encroachment.

The drainage still needs

improvement.

Operational staff

have no safe space for parking at

substation.

40


Tororo Main Substation-

UETCL All the 33kV outdoor

Switchgear and the corresponding control

panels are still in good working condition

Now all the old indoor

Jacobsen switchear have

been removed.

New 10Mw Solar plant

now connected.

No observed weekness as

yet.

All the

decommissioned Jacobsen

switchgear has been removed.

Outdoor switch

yard well maintained.

Nyakasi Substation-Hima Cement

Substation will have: 2 x 10/14 MVA, 33/11KV Transformers

Conrete works 70% done on a project to be

delivered in 276 days from July 2017.

FAT was to be done 0n 25th Novemver 2017

The Transformers, SCADA and Switchgears are from

Scheneider of Germany.

Non yet The construction civil works

commenced with levelling of site on

7th July 2017.

The entire

installation and commissioning of 2 x 10/14MVA;

33/11KV substation is

expected to take 276 Days as per contractor(Global

Technical Services)

Lugazi Substation –

UETCL,66/11kV{2x10/14MVA 66/11kV}

11KV Switchgear at

substation was found in a sound state.

The two transformers

There were no observable

weak aspects.

The first structures where

not accessible; though the

Regular Gas

checks needed on this maintenance

free ABB

41


were found operational

after UETCL repairing the one that was previously off.

Umeme staff reported that

they where in a good state

Tembo 3 cable bracket

missing

switchgear.

All the circuit breakers were

serviced on 11th February 2017

Former Kapchorwa power generation desiel station

Land still exists The existing land not secured by fence

Land enchroached on by a slaughter house

The whole place smells blood and very dirty.

The former plant house being used

as a hide and skin depot.

42


Moniko Substation –

{2x15/20MVA ; 33/11kV } ABB LTD made August 2016 TX1:

S/No: VN1288 Tx2:

S/No: VN1289 Aux Transformer : 100KVA

The Substation has a firm

capacity of 20MVA. All Plant and Equipment installed are new and

operating well. The items enlisted bellow were installed

and fully commissioned by 3oth December 2016.

9 x GIS ABB ZX2 SF6

11KV breakers;

7 x GIS ABB ZX2 SF6

33KV breakers;

2x15/20MVA ; 33/11kV

ABB Trans fromers

2 x 110VDC Battery

charger and Battery Bank set.

A steel tower anchored aerial earth system

Air Conditioners in the plants house rooms.

AC distribution boards

Tap changer Control Cubile in the plant house

RTU

Mini SCADA

9 Channel CCTV system

No week aspects yet observed The substation was

commissioned on 30th December 2016 and no mal

functioning yet reported.

The Substation is

modern with SMART Aspects.

It is well guarded and all sanitary facilities

are new.

43


Bulangira Substation

Installed Capacity: 1x5MVA,33/11kV transformer

Serial Number:57.230

The transformer is lightly

loaded.

The station toilet door

needs repair.

The efficiency of the remote

control is suppressed due to the location.

Transformer still has some oil leakages from the

conservator level.

Substation still at

risk of flooding in case the drainage

blocks.

The remote control

efficiency needs to be improved.

Security lights were reported by

the guards to be not working.

Iki-Iki Substation Installed Capacity:

1x2.5MVA, 33/11kV transformer, very old Hawkey Sydly of 1959

Serial Number:77122

Substation generally okay.

A new battery charger was

installed.

The Biometric access control still not

commissioned.

Despite the maintenance

done in November 2017; Some oil leakage from the

transformer tank still persists.

Station well kept;

Vegetation control

with weed killer has been

successful; however regular application still

needed.

Magamaga Substation

{1x2.5MVA,33/11kV (S/N:9422335)}

Old AICHI Tx from JICA2 project

1995

Substation still generally okay. A new guard house and a toilet/ bath room are now in place. Biometric access control installed.

The toilet is water bourne ; yet there is no water.

The S/S needs to be expanded; it is overcrowded.

No security lights

The H-structure with the dropdown isolater needs to be replaced.

There is still need for provision of security personnel with water and security lights

The substation Vegetation control needs to be more regular.

44

11.1.3 WESTERN REGION


Masaka

Central Substation Installed

capacity:

1x10/14MVA 33/11kV transformer &

1x 5MVA 33/11kV transformer-

for storage-on soak

Transformer Serial

Numbers:

19010719/02 & 68273 respectively

Earth lid near the station supply

transformer room(on the plant house) terminated

DC and chargers batteries well maintained

Power transformer, switchgear,tap

changer & AVR well maintained

Lights in the plant house/security

lights,communication handset,Battery bank/DC system &

fence(bonded to substation earth) well maintained

Main gate in good condition

Biometric access control system

functional

SCADA functional

Transformer No.1&2 oil samps full

of water.Not self draining-the design never provided for it

Air conditioning system not working

Battery for the energy meter

No.E245130 on Bay 102 warning-requiring replacement

Access door for the battery room hardly opens but rather carried-

requires maintenance

A 9kg fire extinguisher that had

been found expired on 04/08/2016 at the guard house,missing at the station(reportedly taken away &

never returned)

Energy meter for the station supply

transformer located very close to the live chamber-unsafe for the

operational staff-need for its relocation for safety reasons

Piped water/tap not operational to

cater for hygiene requirements-connection process never completed

Access road bad with formation of gullies

Proposed

upgrade of Upper ring 11kV

feeder cable from 95sqmm to 185sqmm

pending approval

45


Kiriri Substation

Installed

Capacity: 1x2.5 MVA 33/11kV

Pauwels transformer

Transformer Serial

Number: 85.40668

Burnt 11kV feeder cable previously

burnt replaced with 95sqmm cable

Rotten MV poles replaced on the

take-off structures and inside the substation(i.e Bus bar H-Structures,first structures,isolators,

switchgear structures, Metering Unit structures)

New 11kV isolators installed for Kibibi & Kabulasoke 11kV feeders

Bus bar conductor changed

Aerial earth installed

Power transformer operational-though requiring maintenance on the

tap changer

2x9kg fire extinguishers available &

serviced

Security lights working

Security guard available & found

dressed appropriately for the job unline in the past

Pit latrine cleared of the charcoal

bags that were found in Q2.

HT protection of the auxiliary

supply transformer (33/8565/100kVA) missing-directly connected

Tap changer not working due to malfunctioning lowering/raising

contactors(reportedly out of stock)-the lowering contactor not

working electrically. It has been maintained several times with no permanent solution realised.

Cable gantry that had been kept besides the transformer at the

substation un-assembled recovered-need for its accountability since it formed part of the verified

investments

Access road to the substation

affected by ongoing road works

Unreliable communication link to

enable remote operation of the biometric access control system at

the substation entrance

Auxilliray supply transformer HT

protection should be put in place &

tap changer lowering/raising contactor

maintained. Accountability of

the cable gantry that was verified

as an investment & found unassembled &

later found missing needed!

Kasese Central Substation

Installed Capacity: 1x2.5MVA

Oil leakages on the metering unit & power transformer cured

DC supply to the station functional with no issues

Auxilliary supply transformer well protected on both HT & LV.

Metering Unit(M.U) with a broken stud and substituted by use of a

binding wire to hold it in position

Transformer oil not

polychlorinated biphenyls (PCB) free hence with a negative effect

Nkenda substation

132/33kV power Tx No.2 that supplies Kasese

Central

46


33/11kV Brush

transformer


51750/2

Fire extinguishers(3x9kg) available &

serviced

Equipment well labelled

Water & security guard available

Substation log book available for

recording operational events

Tap changer worked on and

operational


to the people & the environment

Biometric access control system not

functional

Stone pitch lacking

Analog relays hardly reset once they

flag on a fault-crude methods used to forcefully have them reset-digital relays would suffice

Poor jumper termination by use of binding on the Red phase for the

knife blade link(KBL) on the take-off structure for Kasese Town 11kV

feeder

Kasese Town 11kV feeder circuit

breaker DC requires maintenance attention

No substation system line

diagram(SLD)

substation has a faulty AVR

rendering voltage

regulation (electrical operation)

untenable-tap changer only operated

manually

Fort portal Substation Installed

Capacity:

1x5MVA, 1X2.5MVA 33/11kV

Power & Brush transformers

Transformer No.2 oil leakages on the Bucchholtz relay cured

Redandant metering unit formerly on Rugombe 33kV incomer recovered

Transformer No.1 working normally with its tapchanger operational

Power transformers 1& 2 operational

Overhead support structures well

maintained

New air break switch(ABS) & Kijura

33kV line installed /constructed as

Bundibugyo 33kV line Isolator faulty & bypassed in effect

connecting directly onto the substation bus bar.This compromises the reliability of the

substation

All ammeters on the 11kV bus not

working.

Material storage next to the guard

house damaging the fence

Most security lights faulty requiring

Had been agreed that

Umeme officially informs BECS

of their faulty apparatus for

possible maintenance or replacement

(No action

47


respectively

Transformer Serial

Numbers: 112019 & 76026

respectively

an alternative feed to the substation bus bar-yet to be commissioned

Biometric access control system functional

Aerial earth for the substation in place to guard against lightening

SCADA functional

Battery bank separated from the

switchgear & accommodated in the new extension to the plant house

DC supply working normally

Air conditioning working

Capacitor bank working

normallySafety mats in place for operational safety

2 of 5 security lights working

urgent maintenance attention

Metering unit for Fort Portal Town

11kV feeder faulted,recovered without replacement

Fence damaged on the upper side,with metallic members

bent,wire mesh with forced openings at the base

Pole(s) storage next to the substation fence and poor

loading/off-loading practices have inflicted damages on the fence

Auxilliary sypply transformer lacks

surge arrestors for its HT protection

Rugombe & Kijura 33kV nulec

circuit breakers locally operated,with no visibility for

remote operation through SCADA.

Underground cable for Kijura 33kV

Metering Unit(MU) structure left exposed above the groud & poorly

secured to the poles by use of binding wire instead of clamps

Energy meter for the station supply

transformer on Nkenda 33kV incomer to the substation poorly

mounted & with poor terminations

Mpanga 11kV feeder cable surge

arrestors not connected

reported on this)

48


A few poles stored on ground

besides the fence-likely to inflict damage on it

4 capacitors stored in the battery

room,which is not a storage place

Missing system line diagram(SLD)

at the station

Tx No.1(5MVA) & Tx No.2(2.5MVA)

decoupled,because of different makes

The fence damaged at the rear end, cats or dogs and people can easily

get into the substation & storage area

Stores building has openings on the side of the substation & water

passes through to flood the inside; drainage needs improvement

Main gate to the substation area

broken(as in previos inspection)

3 of 5 security lights not working

Rugombe

Substation Installed

Capacity: 1x5MVA

33/11kV Energo Invest

Protection settings for Mukunyu &

Mabale 11kV feeders rectified-previously one had to physically reset

the relays whenever the lines went off


Security guard found at the station

Plant-house is still in good condition

Pit latrine is in good condition

Unreliable communication link to

enable reliable operation of the Biometric access control system.

Main gate shutters mis-aligned

All the 3 security lights

faulty(flickering)

Battery bank inside the planthouse

with the switchgear

Requires

restoring the faulty

CB,missing feeder cable for Mukunyu 11kV

feeder and subsequent

49


transformer

Transformer Serial

Number: 68276

The guard house & fence are in good

condition

Power Transformer is well maintained

All feeder labels in place

Water connection provided

Bats infestation on the plant house

cleared

AVR faulty hence the tapchanger

non functional-relies on the transformer output from Nkenda substation

Circuit Breaker for Mwenge 11kV feeder faulty,Mwenge 11kV &

Mukunyu 11kV feeders linked together with jumpers on the take-

off structure & sharing same CB meant for Mukunyu.

The feeder cable for Mukunyu 11kV

feeder missing from the installation/recovered

Air conditioning not working

Links instead of proper fuses used

for auxiliary transformer HT protection

Access road eroded by running water from the substation yard

Substation yard full of vegetation growth

Drainage channels clogged by eroded soil & rubbish from

neighbouring premises

Yard stone pitch inadequate

separation of the two feeders

All the issues identified in

Q1&2 not attended to

50


Busunju Substation

Installed

capacity: 1x2.5 MVA

33/11kV, 1x5MVA 33/33kV

Power and Auto

transformers respectively

Transformer Serial

Numbers: 68284 &

00.2.4026 respectively

Power & Auto transformers

operational

Red phase bushing of the 33/11kV

power transformer replaced after a recent severe fault from Jesa Farm 11kV feeder that left it raptured

DC supply well maintained

Substation earth bonded to the fence

Fencing,drainage,stone pitch well

maintained

Fire extinguishers available and

serviced

New security guard in place

Protection settings of Jesa Farm

11kV feeder circuit breaker could not counter the fault,which led to the power transformer failure.The

33kV transformer circuit breaker operated instead. The fault

reportedly originated fom the capacitor bank at Jesa Farm. Discrimination & sensitivity of

the relay protection settings ineffective causing unnecessary equipment failure.

No circuit breaker on the 11kV side of the transformer for its LV

protection-relies on the 11kV feeder(s) protection whose

grading may not suffice, just like was the case for a fault on Jesa Farm 11kV feeder

Biometric access control unit at the main gate faulty

Security lights not working

Kawanda UETCL 33kV incomer not

energised,its line isolator faulty,lacks a circuit breaker and

first structure not labelled

Yellow phase of the Circuit Breaker

for the Auto transformer with a missing surge arrestor

Same status as

in Q1&2 of 2017.

Maintenance of the substation

required to avert the likely

equipment failures.

51


Use of binding wire for the

joints/surge arrestor terminations as opposed to PG Clamps on the metering unit for the 5MVA

33/33kV auto transformer

No energy meter installation for the

auto transformer metering unit

Mityana 33kV line isolator with

persistent hissing possibly due to a loose connection(noted in previous

inspection too),lacks an operational padlock yet located outside the yard-requires maintenance

Power transformer oil temperature gauge display faulty(stuck at 0°C

mark)

Kiziba 11kV feeder lacks an isolator

& its nulec circuit breaker had 3 faulty & disconnected surge

arrestors

Jesa farm 11kV feeder with faulty &

missing surge arrestors on the Red Phase of the feeder Cable(at cable bracket position)

Surge arrestors on the nulec CB for Katera 11kV feeder not

terminated,Surge arrestor on Red phase for the feeder cable supplying the bus bar not terminated

52


Stone pitch not restored around

Kiziba and Jesa Farm 11kV feeder cable routes after maintenance works

Some isolators lack operational padlocks

Remote operation of Mityana 33kV line circuit breaker through SCADA

not working

“Jesa Farm” 11kV labelling requires

changing to “Mulwana” 11kV feeder to match the system information

No substation drawing

No source of water at the substation

for SHE aspects

Vegetation growth noted uncleared

Mityana

Substation – Wabigalo Installed

capacity: 2x2.5MVA 33/11kV

transformers

Transformer Serial Numbers:

57.235 &

New air conditioning unit installed in

the control room

Power transformer & tap changers in

good working condition

New battery bank now operational

Biometric access control working normally

Indoor switchgear,RTU,AC in the plant house & safety mat in good

order


Security guard in place

Two(2) fire extinguishers in the

control & battery rooms found to have expired on 03/09/2017.

Stay assembly for Kassanda 33kV feeder Line Isolator structure

doubles as a connection to the 33kV busbar with the two functions separated by Disk Insulators-a

possibility of flashover poses a safety risk-and raises a question of whether an maintenance tests are

carried out on these insulators to check their integrity

Urgent need to

have substation land boundaries

opened & fenced off.The access road appears to

have been enchroahed on & lower,lower

side of the substation

leaves unfenced piece of land

53


57.231

Mityana substation – Mutundwe

33kV feeder motor for the isolator/switchgear burnt- Spring charging for the CB can only be

done manually

Isolator & Earth Switches (on 33kV

bays i.e Mutundwe, Busunju,Kassanda & Kiriri) on the

same structure without interlocks, a safety risk for operational staff

Station supply(50kVA Mineral Trafo)

transformer with yellow phase HT & LV protection linked & no surge

arrestors

No oil samps for Power Txs No.1 & 2

Air conditioner(AC) unit in the extension of the plant house meant

for DC not working(just like in Q1&2)

Raptured insulators noted on the outdoor switchgear (isolators)

Oil level for the main tank of Tx No.2 low

Poor workmanship noted on the cable trench for DC cables to the

new battery bank in the plant house extension & cracks already evident in the newly constructed structure

48V DC batteries still

while a foot path was established

on the other two sides of the

substation yard

Substation

maintenance to sort out the

raised issues required and most critical is

the separation of the Isolator and

Earth switch/or provision of interlocks as

being essential in ensuring

safety of the operators. Air Break Switches

(ABS) could be a temporary alternative in the

absence of spares for the

Siemens switchgear

54


accommodated in the plant house with the switchgear-undermining

the purpose for which the battery room was constructed-need for

relocation

Transformer No.1 GEC Alsthom

circuit breaker old and sometimes malfunctions

Circuit breakers charged manually-

SCADA would remotely operate the apparatus if the circuit breakers

were not being charged manually

Broken HV bushing on Red

phase,missing surge arrestor & missing striker pin fuse on the station supply(63kVA Matelec)

transformer for Kiriri 33kV Interconnector

Part of the

substation land is not fenced

off,noted a possibility of

encroachment.

First structures

for Kiriri 33kV, Kassanda 33kV,

Busunju 33kV, Namutamba 11kV & Mityana

Town 11kV located on a plot

besides the substation currently with a

wayleaves complaint

Mubende Substation

Installed capacity:

1x 2.5 MVA, 33/11kV transformer

GVR autorecloser circuit breaker installed on Kakumiro 33kV feeder

Stone pitch in good condition

Guard house in good condition

Security guard present and in control

Substation logbook and drawing exist

DC working without anomalies

Fire extinguishers available and

Mubende Town 11kV feeder circuit breaker with a yellow phase surge

arrestor faulty

Faulty/vandalised tapchanger

offering no voltage regulation

Signs of oil leakage through the

gasket

Old Reyrolle Oil CB still exists on

Entire substation land

should be fenced off after

establishing the true boundaries

55


Transformer

Serial Number:

77123

serviced

Substation access gate intact and

kept locked

Kakumiro 33kV feeder bay un-decommissioned-not used

Security lights(x2) not working

Substation fence is damaged(with a

wide open forced entry) on the rear side besides the pit latrine

Remote operation not possible for Nkonge 33kV Incomer CB, relies on

Nkonge substation circuit breaker in the event of required urgent

isolation

Nkonge 33kV line has a faulty

isolator requiring repair on yellow phase

Wiring for the auxiliary supply

transformer poorly done

Possibility of land encroachment on

substation land possible in the absence of an external fence

covering the entire substation land

Vegetation growth evident in the

substation yard

Ishaka

Substation

Installed capacity: 1x5MVA,

33/11kV

Civil works ongoing with expected

completion date of 31/10/2017,involving construction of

a new plant house,cable trenches and cabs

Entire scope involves total substation reconstruction with two transformers,

One transformer installation

requirements has been implemented contrary to the

proposed scope of two(2). In effect only one plinth and associated cable

trenches have not been provided for.

Refurbishment

works ongoing

56


transformer

Transformer Serial

Number: 111211

plant house, indoor switchgear & separation of the outgoing feeder

Ishaka Town 11kV feeder.

Rukungiri

Substation Installed capacity:

1x2.5MVA,

33/11kV transformer


68282

AVR repaired and raising contactor

operational hence the electrical operation of the tap changer enabled

Power transformer,fencing,guard house, toilet, access gates in good

condition

Metering unit & energy meter

formerly redundant on Kanungu 33kV feeder next to the substation recovered

Insufficicnt lighting at the entrance

& lower side of the substation

Some switchgear worn out/faulty

and by-passed such as the transformer isolator

Pole-mounted nulec circuit breaker on Kanungu 33kV line has two

faulty/isolated surge arrestors, hence not protected against earth faults. Earth wire for this circuit

breaker broken and illegal operation likely due to its external location to

the substation-to be relocated to inside the yard in sept/oct

SCADA system only allows for

visibility but cannot remotely operate the apparatus, hence

substation manually operated

No oil sump for the power

transformer, oil goes direct into the environment

Labelling for Kagogo 11kV feeder wrongly written as “Kagogoro”

Need for 2 extra

lights(One at the substation

entrance & the other on the lower side of the

yard-below the power

transformer)

The old

redundant building besides the substation

yard could be renovated and utilised as part

of the offices.

Worn-out/faulty

switchgear and associated

accessories like surge arrestors on Kanungu

57


Yellow phase surge arrestor missing

on Kagogo 11kV feeder circuit breaker-scheduled for replacement in Sept/Oct.

An old and redundant structure/building exists besides

the substation yard, occasioned by floods whenever it rains due to poor

drainage and lack of maintenance

33kV nulec circuit breaker

SCADA functionality

among others should be

addressed

Oil sump

required to avoid direct release of oil into the

environment

Planned

maintenance works not implemented

due to budgetary constraints

Kabale Substation

Installed capacity: 1x 5MVA,

33/11kV transformer

Transformer Serial

Number:

Transformer oil leakages cured

Biometric access contro system working

One air conditioning unit for the control room working

3x9kg fire extinguishers available and serviced

Substation premises and yard clean

110V & 48V DC battery banks

relocated to the new battery room,as opposed to having them housed in

Line isolator for Kabale West 11kV

feeder faulty with the yellow phase permanently linked(operated like a DOF and with no handle provision)

Redandant H-structure with faulty isolator next to the 33kV busbar

Air conditioning for the battery room & one unit for the control unit

not working

Old 48V DC batteries not recovered

from the control room,though

Need to have the

faulty air conditioning units

maintained & attending to highlighted

operational deficiencies

58


68271 same place with the switchgear

One security light working

The access gate, stones/gravel,

transformer tap changer,gantries,poles and signage,metering,SCADA

functionality, guard house, security/lights & DC supply in good

condition

disconnected

One(1) security light faulty

Cracks evident on the concreter

ceiling recently constructed

Bus bar conductors with signs of

burning,possibly due to lightning strikes

Kabale West 11kV earth switch

status indicator faulty, hence unsafe for operations

Mbarara

Central Substation

Installed capacity:

2x5/7MVA 33/11kV

transformers Transformer

Serial Numbers:

942024303 & 942024302

New 7SJ66 siemens relays installed

on Bays 107(Ishaka),106(Tx No.2),105(Karamurani),104(Bus

section),103(Ntare),102(Tx.No.1),101(Kakoba),307(Tx.No.2) & 303(Tx.No.1)

Power transformers & switchgears in good maintenance

condition

New 33kV bay installed to cater for

the new 33kV feeder to BMTS steel factory

Remote operation of the control room

access doors functional

Cooling fans for Tx No.2(5/7MVA)

working

Plant house well maintained with a

new extenson due to a need to accommodate a new 33kV feeder

Cooling fans for Transformer

No.1(5/7MVA) not working due to wiring issues-despite highlighting it

in Q1,it has never been resolved.

Old(decommissioned) siemens 11kV

panel stored in the control room with the operational switchgear

Local functionality of the biometric access control system not working

Biometric access control unit at the main gate faulty

Perimeter fence damaged with several openings

Very big tree just outside the substation fence pose a future risk

to the power transformer if not removed early enough

Guard house, toilet & its plumbing

Substation

required complete

refurbishment and opening of

boundaries of the substation land.

There exist past claims of part of

the substation land by a private

developer,who attempted to divert 5 outgoing

feeders in that respect

59


under construction

Battery bank housed separately from

the switchgear

Apparatus well labelled

Safety mats in place

Access gate intact with Biometric Access Control system installed

Fire extinguishers in place & serviced

Redandant 3-ph LV pole besides Tx 1

decommissioned

in a poor state with paint peeling off

Drainage issues exist at the

substation with the channel in front of the old store structure damaged

and blocked

Weed growth was evident

Old and abandoned concrete pole rack behind the old store building

needed to be covered up and entire substation yard floor covered with

sufficient stone pitch

Station supply transformer labelling

wrong indicating “50kVA” yet the installed capacity is “160kVA/11kV”

60

11.2 DISTRIBUTION LINES

The following tables describe the status of some portions of the distribution lines inspected. A description of technical

observations have been made in respect of the prudent utility practices regarding operation and maintenance activities

aimed at keeping the network in sound state.

12.2.1 NORTHERN REGION Source Substation

Name of the line

Voltage level

Inspection findings

Hoima Busunju 33kV Main line generally okay. Kyankwanzi T-off previously in a bad state was found WIP with structures being replaced. Complaint was that not all the bad

parts of the line were scoped for replacement.

Masindi 33kV While some of the worst structures have been worked on, e.g.

structure with broken cross-arm struts at Bulindi Zonal Agriculture Station, the line is still in need of major overhaul and

upgrading of conductors.

Munteme 33kV While the worst structures have been replaced, line is still in bad

state as was reported in previous inspections.

With ferdsult network downstream, pole replacements required to sustain the supply; Circuit breaker & Metering Unit at Munteme(Umeme/Ferdsult boundary) necessary

Kinyara Budongo 11kV Estimated 80% of MV structures on this line are deemed rotten. The LV networks are in equally bad state and a safety risk

Line should be considered for urgent and complete rehabilitation

61

Source

Substation

Name of the

line

Voltage

level

Inspection findings

Masindi Nyamigisa 11kV Rotten poles and poor conductors still on most segments of the

line. Kabalye t-off is in generally in good state of maitenance

Masindi Town 11kV Line in a fair state of maintenance. Some rotten poles and worn

out conductors exist. Low voltage networks in bad state of maintenance. Many transformers are reportedly overloaded with LV networks running or long distances from the

transformer

Apac 33kV Many of the bad structures had been either replaced or re-plumbed and stay wires restored. Though it was reported that

there were still many bad structures that need replacement

For yet unclear reasons Bweyale t-off has never been worked on despite being surveyed and scoped for rehabilitation as was done

on the main line.

Long low-sagging spans of ABC still exist in Apac town!

Disused Sectionaliser at Masindi Port and Nulec CB at Apac need to be either re-deployed, if they are still operational, or recovered and disposed of, if out of use, rather than being

left on the line.

Lira Spinning Spinning Mill 33kV Most of the poles are rotten. Rehabilitation of the entire line is necessary

62

Source

Substation

Name of the

line

Voltage

level

Inspection findings

Lira Main Gulu 33kV Line still generally okay after stringing new conductors, and

regular maintenance. Most of the rotten poles have been replaced and interconnector is now relatively stable. Reportedly 132 poles have been replaced to date – 78 on

Gulu side and 54 on Lira side

Apac 33KV Line is still relatively okay

Kitgum 33kV This line needs urgent an comprehensive rehabilitation

Lake Kwania 33kV Line is still okay after refurbishment

Anai 11kV Maintenance work had been carried out on the line and it

was now generally okay

Lira Town MV

and LV network

11kV Rotten poles have continued to be replaced under O&M, plus

conversion of LV to ABC. Most poles replaced have no caps which shortens their lifespan.

The LV networks in Senior Quarters, Junior Quarters, Teso Bar areas are not okay. 2016 status-quo still prevailing

Gulu Gulu Hospital 11kV The line is in need of URGENT SYSTEM IMPROVEMENT

Layibi 11kV Despite complete system improvement, reportedly many outages are still being experienced. Attributed to many t-offs

and no means of isolating (auto-reclosers & sectionalisers) faults, especially lightening, emanating from them.

Kitgum Padibe 11kV Nearly all poles on the line were replaced and still okay. Line still in a good condition

63

Source

Substation

Name of the

line

Voltage

level

Inspection findings

Ayulu 11kV Bad poles were replaced. Small x-area conductors still remain on

the line. 2016 status-quo still prevailing

Soroti Atirir 33KV Many of the bad structures replaced. A few leaning structures remain that need attention. Kalaki t-off:- A few leaning structures remain that need attention, e.g. re-plumbing.

Town Ring (Osuret t-off)

11KV Has many leaning poles that need re-plumbing. The LV networks need tidying up. Status quo from previous inspections still prevailing.

11.2.2 EASTERN REGION

Asset Description

Observed Weak Aspects Remarks

Owen Falls –Jinja Industrial 1 33KV Line

The underground cable need to be put in proper cable ducts

The temporary overhead line diversion is being permanently re-routed under ground at the new bridge crossing.


The underground cable need to be

put in proper cable ducts



The underground cable need to be

put in proper cable ducts


64

Asset

Description


Jinja

Industrials/s- Kamuli 33KV line

The line has many poles needing

replacement; especially in swampy areas. E.g: Kasambira, Namayira, Musota etc

All leaning or rotten poles in swampy areas need replacement.

Kamuli-Bukungu 33KV

line

The line has many poles needing replacement; especially in swampy

areas. E.g: Irundu, kasolwe etc

All leaning or rotten poles in swampy areas need replacement.

Kamuli s/s –

Namwendwa 11kV feeder

The line is still in a very poor

state.

Total revamping is needed.

Kamuli s/s – Bulopa 11kV

feeder

The line is still in a very poor state.


Kamuli s/s – Namasagali11k

V feeder

The line is still in a very poor state.


Iganga s/s – Kaliro 33kV feeder

The line is in a sound state though about 20% of the poles need replacement.

Minor pole repacements and restoring vandalized stays is needed.

Iganga s/s –

Kaliro 33kV feeder (Kawete T-off)

The line is still in a very poor

state. About 65 % of the poles still need replacement on the REA T-off under JICA


65

Asset

Description


Mbale-

Kapchworwa 33KV line

The line is in a sound state

though about 40% of the poles need replacement expecially around the swampy areas of

between Sironko and Muyembe

Minor pole repacements and restoring vandalized stays is

needed. Due to the SITI evacuation; all the week points like dropout fuse links along main line have to be made jumpers. Voltage boosting may be needed at Kapchorwa due to the

extended line upto Suam and upto Nakapiripirit/Amudat

Recent works

executed by Umeme in UEDCL areas

and Umeme areas

The new 50KVA transformer

installed by Umeme at Naabongo Village faulted and

was replaced by UEDCL within a period of one year.

The jobs done in UEDCL domain should have been handed

over officially to UEDCL by Umeme. At Tabakonyi, Shagi and Atari villages only ABC extensions done from REA lines that where existing.

Mbale Town ring 1 11KV

feeder

The line is still over loaded up to 6MVA; yet many portions are still

having steel and 25mm2 SCA conductors.

There is urgent need to have a project for rehabilitation of the Mbale ring 1 to separate Sironko and Budadiri right from

Mbale Substation

Auto

Reclosures on Mbale Town ring 1 11KV

feeder

The Auto- reclosures are not yet

remotely controlled .

Umeme should enable remote operability of the Auto-

reclosures.

66

11.2.3 WESTERN REGION

Source Substation

Name of the line

Voltage level

Inspection findings

Busunju Hoima 33kV Despite recent refurbishment of the feeder a few years

ago(2015), some of the MV poles are rotten witout serving their expected lifetime.

Katera 11kV A number of replaced MV poles still leaning while the

remaining part of the network is composed of rotten/leaning poles and worn-out conductors. Katera T/C transformer is

poorly maintained with the meter installations exposed and also exposing the un-enclosed transformer/live chamber to

the public,which is unsafe.Urgent maintenance action required.

Mitala Maria Kiriri 33kV The line is composed of very badly rotten MV poles,work-

out/muilti jointed conductors with a significant number of structures leaning.Some structures have bent cross arms.The line is highly unreliable and also affected by vegetation

growth.

Kiriri Kibibi 11kV The line is affected by the ongoing road construction works

that have left a number of MV structures in the middle of the roads with delayed diversion of these structures.The MV poles are poor with worn-out conductors displaying multiple joints

where the line traverses trees and swampy areas.

67

Source

Substation

Name of the

line

Voltage

level

Inspection findings

Kiriri Mityana 33kV The line is in a very poor state requiring urgent

refurbishment. Almost all the MV structures are rotten occasioned by reactive replacement of poles that break down

as a result in order to temporarily restore supply. The status quo has not changed from that of earlier inspections.

Mbarara North Ishaka-Rukungiri (Kashenyi T-

Off)

33kV Kashenyi T-off in a very sorry state with most of the poles rotten.

Mbarara North Kabale 33kV Line in good condition.A number of load break switches installed. Line scoped for aerial earth installation(under O&M)

in light of frequent earth faults on the line due to lighning strikes.

Mbarara North Ibanda 33kV Most of the MV structures in sound condition. However, it experiences too many faults.The circuit breakers at the tap-off

points for the UEDCL networks at Nyabuhikye allow faults to go through and trip the line at Mbarara North substation.The

grading/coordination of the protection equipment requires urgent attention by both UMEME & UEDCL.

Despite the line being relatively long(>164km upto

Kamwenge),further extensions continue to be added for example the one recently added past Kamwenge Water Pump.

Reliability of supply and effectiveless of the protection equipment is thus compromised. The conductor from Ibanda to Kamwenge is 50sqmm ACSR and requires an uprate alteast

100sqmm.

68

11.2.4 CENTRAL REGION

Source Substation

Name of the line

Voltage level

Inspection findings

Mutundwe Kabusu (TAL Cottages

environs network-Rubaga Road)

11kV The MV Line needs urgent clearance since vegetation growth

has overgrown some of the poles;

Dangerously Rotten MV poles that are a safety risk to the

surrounding residential and commercial areas. Key attention

must be given to structures 2008, 1175 and 1822;

Many network diversions have been carried out

unprofessionally to the existing MV line(refer to the drawing)

around TAL cottages and environs;

LV line is almost in contact with the metallic fence at TAL

Cottages-Rubaga road(refer to annex for the pictures) hence

posing a safety risk. An extra LV pole needed for better

clearance;

TAL Cottages transformer does not have HT protection.

69

11.3 NON NETWORK ASSETS-OFFICE BUILDINGS,LAND AND VEHICLES

Asset Description

Observed Strong Aspects Observed Weak Aspects Remarks

Kisoro Office building

Front building in fair condition with no

leakages and internal drainage in fair condition

Neighbouring building seems to have encroached on the plot

External drainage blocked as a result of blocking the gutters

formerly taking the water out

Perimeter wall cracked on the

rear side

Need for opening of the boundaries of the plot

Need for refurbishment of the rear part of the property

Kabale Office building

Recently refurbished and in good condition

Not applicable Well maintained

Rukungiri Office buiding

Recently refurbished and in god shape

With reported minor leakages in the rear structures

Well maintained

Mbarara Office Building

Recently refurbished & reconfigured


Kasese Office Building

In a fair condition of maintenance

Upper floor not revovated Upper floor requires attention to bring it to same level of

maintenance as the ground floor

Fort Portal Old

Building

NIL Building completely dilapidated

and not fit for occupation

Plans underway to have it

demolished and reconstructed

Mityana Office

Building

In good condition of

maintenance


Mukono

District Office

Building in generally good

condition

The interior of the upper rooms

needs to be revamped.

Total painting of the upper rooms

and repair of ceiling would improve the ambience.

Entebbe Office Building

In good condition of maintenance


70

Metro Office

Building

Recently refurbished Not applicable In good condition of maintenance

Bombo Office

Building

Fairly maintained Soe window glasses broken

requiring replacement

Some minor maintenance

attention necessary

Lugazi District

Office


condition

The interior of the upper rooms


Total painting of the upper rooms

and repair of ceiling would improve the ambience.

Kamuli District Office

Building in generally good condition.

The interior of the upper rooms needs to be revamped. Major plumbing works needed.

Total painting of the upper rooms, the entire interioe and

exterior is needed

Tiling plus plumbing works

would improve the ambience.

The entire drainage of the

water borne toilet and the compound needs to be redone.

The road works are causing

blockages of the drainages leading to flooding of premises.

Front of the building needs protection from the idlers.

Iganga District Office

Building in generally

good condition.

The building and the

entire office environment got a good facelift upon total painting and

removing the pit latrines

No observed weakness apart from the front access area being small.

The plot behind office has some part of the land encroached on.

71

in the hind.

Well kept stors have been created behind the

office yard.

Jinja District

Office


condition.

The external walls have faded

paint and some interior walls are dirty.

Total painting of the building

needed.

Mbale District Office

Building in generally good condition

The interior of the upper rooms needs to be revamped.

Total painting of the building needed.

Mbale Stores Yard

The fencing was done to barricade the store yard area only.

The area of about 4 acres behind the store yard was encroached by

the police for farming. It needs to be reclaimed as soon as possible.

Tororo District Office

Building in generally good condition

The interior of the upper rooms and some ground level rooms


The parking yard is very

clamisy

The store and all the behind

offices need revamping.

Total painting and revamping of the building needed.

Hoima District

Office

Downstairs offices descent Building has been fully

rehabilitated.

Kikwite Military Hill,Hoima

Site taken over by a retired Lawyer Yesero Mugyenyi who enclosed the entire land; former

radio room extended and used as a rearing place for chicken

Intervention required to secure the UEDCL land formerly hosting the VHF radio

72

Masindi

District Office

Status quo hasn’t changed

from previous inspections

Umeme has abandoned the

dilapidated structures at the Masindi yard, Plot M29 off Kinyara Road, and hired new

offices where they are operating from;

Additional plot & structures on Plot M22, Kinyara Road is

currently used by Umeme staff as residential quarters.

Gulu District Office

Building still okay after complete refurbishment

Lira District Office

Lira office still in a fair condition.

Road work expansion has broken up part of the pavement in front of the building.

Upstairs toilets still not repaired

Broken down plumbing in toilets and broken pavement need to be fixed

Soroti District

Office

Office building still in good

condition after refurbishment.

73

ANNEX: SELECTED PHOTOS OF PARTS OF THE DISTRIBUTION ASSETS

SUBSTATIONS

Figure 4 Ishaka substation under refurbishment anr

reconfiguration

Figure 5 Plinth at Mbale substation where the 10/14MVA;33/11kV UIA transformer was removed

74

Figure 6 Faulty and bypassed Line Isolator for BECS 33kV line at Fort Portal substation

Figure 7 Damage on Fort Portal substation fence inflicted by poles storage

75

Figure 8 Kasese substation transformer with PCB Oil

Figure 9 Non-decommissioned Oil CB at Mubende

substation

76

Figure 10 Jinja Industrial substation abandoned

switchgear never commissioned

Figure 11 Kabale substation 48V DC battery bank in

control room with the switchgear despite plant house extension to have them separated

77

Figure 12 Weed clearing at Mbarara Central

Substation

Figure 13 Faulty Biometric Access Control Unit at

Mbarara Central Substation Main Gate

78

DISTRIBUTION LINES

Figure 14 Capacitor bank at Jesa Farm,Busunju well maintained

Figure 15 Mwenge and Mukunyu 11kV feeders bridged at this structure, with one of the feeder cables

recovered!

79

Figure 16 Rotten structure with broken x-arm on Kiriri-Mityana 33kV interconnector

Figure 17 Underground cable installation for the new

33kV feeder to BMTS at Mbarara

80

Figure 18 Kyankwanzi T-Off on Busunju - Hoima 33kV Interconnector,work in progress(WIP) to replace decayed

poles

Figure 19 Kisoro-Katuna border-stays vandalized and poles rotten

81

Figure 20 Structure 130 on Bweyale T-Off on Masindi - Apac 33kV interconnector with missing insulators

and burnt-off top part of the pole

Figure 21 Seemingly disused Sectionaliser at Masindi Port on Masindi-Apac 33kV interconnector

82

Non Network assets –Buildings, Land and Vehicles

Figure 22 Kisoro Office(rear view) having drainage issues

Figure 23 Mbarara Central S/S land with a threat of grabing

Figure 24 Hoima Office fully refurbished

Figure 25 Kisoro Office(front view)

83

Figure 26 Truck found broken down on 23/10/2017 and left at Mubende substation

uganda electricity distribution company limited · figure 14 capacitor bank at jesa farm,busunju...

Documents