FOR APPROVAL
B
11 Apr 2025
Issued for Approval
YH JI
H.S.LEE
H.S.LEE
A
18 Mar 2025
Issued for Approval
YH JI
H.S.LEE
H.S.LEE
REV.
DATE
DESCRIPTION
DSGN
CHKD
APPD
PROJECT :
QUANG TRACH I THERMAL POWER PLANT
38/2021/QT1-EVNPMB2-MC-HDEC-CC1
OWNER:
OWNER’S REPRESENTATIVE :
CONSULTANT:
CONTRACTOR :
TITLE :
DESIGNED BY
DATE
YH JI
11 Apr 2025
CHECKED BY
DATE
PLANT AREA
SUBDIVISION
H.S.LEE
11 Apr 2025
Plant General
Commissioning
APPROVED BY
DATE
PROJECT CODE
DOCUMENT NUMBER
REV.
H.S.LEE
11 Apr 2025
EVNA02.ND1M.19002
QT1-0-CMM-X-090-05-00131
B
Back Energizing Procedure
1st Stage to GSUT #1
Revision History
REV. SEQ.
NO.
NO.
ISSUE DATE
REVISED
PAGE
DESCRIPTION
A
-
18-Mar-2025
-
For Approval
B
-
11-Apr-2025
-
For Approval
REMARK
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Rev. B
CONTENTS
1.0
PURPOSE ................................................................................................................................1
2.0
REFERENCES ........................................................................................................................1
3.0
BACK FEEDING PROCEDURE ..........................................................................................1
3.1
3.2
Pre-requisite ..............................................................................................................................3
Power Back Feeding Procedure ................................................................................................4
ATTACHMENTS
1. Responsibility Organization Chart for Back Energizing of Unit#1
2. Key Single Line Diagram
3. Check list for Back Energizing
4. JSA & Emergency Contact Protocol
5. Erection Completion Certificate PKG _QT1-HHHH-E-0064
i
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
1.0
Rev. B
PURPOSE
The purpose of this document is to establish the initial power back energizing procedure for the
First Stage to T1 (GSUT #1), at Quang Trach I Thermal Power Plant.
This phase, Stage 1, includes the SWYD and T1(GSUT#1) areas, while Stage 2 will include the
UAT & GCB and 11kV SWGR for energization. This procedure document includes the details
of Stage 1.
This procedure aims to ensure a safe and efficient initial power energizing by clearly defining
the operational steps and system checks required. It provides comprehensive guidelines for all
relevant parties to follow throughout the process.
-
500kv SWYD & AIS System
-
Generator Step Up Transformer-1 (T1)
The following topics are not covered in this procedure:
2.0
3.0
-
Energizing of 500kV Quang Trach Switchyard
-
Energizing of those equipments or systems necessary, but not directly related scope of
procedure, such as building auxiliaries (lighting, firefighting & alarm, etc) and auxiliary
power supplies (DC & UPS, panel heating & lighting, etc)
REFERENCES
Document No.
Description
QT1-0-E-010-31-00002
Key Single Line Diagram
QT1-0-E-010-31-00004
Single Line Diagram for Protection and Measurement-1
DD5-16-15B.QT.NT.01
500kV Quang Trach Switchyard Single Line Diagram
SITE CHECK LIST
1)
AC/DC power for back feeding shall be in service.
2)
The devices and equipment being energized shall function properly.
3)
All required site test report shall be ready before Back Energizing.
a)
Transformers (Incl. IR, Protection relay test and etc.)
b)
NGR, Grounding
c)
Required inter-trip and inter-lock test
4)
All CB, DS, ES shall be opened.
5)
Check if CT secondary side for 500kV SWYD, Transformers and GCB, SWGRs is
opened (If it is not used, it must be shorted).
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TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
6)
Make sure that the related lock-out relays shall be re-set.
7)
Perform additional requirements specified in the vendor O&M manual (if needed).
8)
Cleanliness shall be maintained in the area.
9)
Related ECCs (Erection Completion Certificate PKG) shall be completed.
-
4.0
Rev. B
List of relevant ECC’s : QT1-HHHH-E-0064 ( Refer to Attachment 5 )
RESPONSIBILITY ORGANISATION CHART
The Commissioning Manager shall ensure that the back energization activities conducted under
this procedure are fully compliant with the specified requirements. The Quality Control Manager
or their designated representative shall be responsible for executing the required inspections in
accordance with this procedure.
2 of 11
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
5.0
No
Rev. B
KKS ARANGEMENT & CONFIGURATION
LOACTION
DESCRIPTION
1
500 KV
SWYD
DS for CB 561 to DS 571-7
Outgoing CB
via 585 VUNG ANG
DS for CB 561
ES for CB 561
Outgoing CB via C51
DS for CB 571 to C51
DS for CB 571
DS for Air Line
ES for Air Line
ES for CB 571
ES for CB 571
Outgoing CB via C52
DS for CB 581 to C52
DS for Air Line
DS for CB 581
ES for Air Line
ES for CB 581
ES for CB 581
2
GSUT
Generator Step Up Transformer
KKS
Agreed
Numbering with
NSMO
561-6
561
561-8
561-65 / 561-85
571
571-1
571-6
571-7
571-74 / 571-76
571-15
571-65
581
581-2
581-7
581-8
581-74 / 581-76
581-25
581-85
14BAT10
T1
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
6.0
BACK ENERGZING PROCEDURE
6.1
Pre-requisite
Rev. B
The following pre-requisite conditions shall be met before performing back energizing
procedures.
6.1.1. 500kV Quang Trach Switchyard
1)
500kV Quang Trach Switchyard (both primary and secondary system) shall be fully
commissioned and main bus bar energized.
2)
Interlocking between 500kV Quang Trach Switchyard and power plant shall be checked
as per QT1-0-OHL-E-ABA-32-00002 500kV Overhead Line - Schematic Diagram for
Interface Terminal Box.
3)
CB 561 shall be in opened position.
4)
DS (561-6) and DS (561-8) shall be in closed position.
5)
ES (561-85) and ES (561-65) shall be in opened position.
6)
CB 571 shall be in closed position.
7)
DS (571-7), DS (571-6), DS (571-1) shall be in closed position.
8)
ES (571-74), ES (571-76), ES (571-65) and ES (571-15) shall be in opened position.
9)
CB 581 shall be in closed position.
10) DS (581-2) and DS (581-8) shall be in closed position.
11) DS (581-7) shall be in opened position.
12) ES (581-25), ES (581-85), ES (581-74) and ES (581-76) shall be in opened position.
6.1.2. 500kV Quang Trach Power Plant - General
1)
220V system shall be fully commissioned and put into operation using temporary power
supply.
2)
AC 230V UPS system shall be fully commissioned and put into operation.
3)
No control from DCS shall take part in back feeding process.
4)
Fire fighting and alarm system associated with back feeding equipment shall be fully
commissioned and put into operation.
3 of 11
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Rev. B
6.1.3. 500kV Quang Trach Power Plant – 500kV Overhead Line Equipment
1)
500kV Overhead Line Equipment shall be fully commissioned as per
- QT1-0-OHL-Q-ABA-60-00017 500kV Overhead Line – Site Test and Inspection
Plan and Procedure for Primary Equipment
- QT1-0-OHL-Q-ABA-60-00018 500kV Overhead Line – Site Test and Inspection
Plan and Procedure for Secondary Equipment
- QT1-0-OHL-Q-ABA-60-00019 500kV Overhead Line – Site Test and Inspection
Plan and Procedure for SCADA/EMS System
- QT1-0-OHL-Q-ABA-60-00020 500kV Overhead Line – Site Test and Inspection
Plan and Procedure for Telecommunication System
- QT1-0-OHL-Q-ABA-60-00026 500kV Overhead Line – Site Test and Inspection
Plan and Procedure for Metering System
2)
Annunciation at Unit 1 OHL Protection Panel (14ARA01) shall show no abnormal
conditions.
3)
86OHL1 & 86OHL2 lockout relays shall be reset at Unit 1 OHL Protection Panel
(14ARA01) shall be reset.
4)
S87L1 & S87L2 (On-Off) F87L Out of Service Selector Switch shall both be set at ‘On’.
5)
Alarm List Display at 500kV System OWS Host Computer-1 & 2 (04AXA01GJ003 &
04AXA01GJ004) shall show no abnormal conditions.
6)
Control authority (Station-A0-A3) shall be set at ‘Station’ from OWS Host Computer-1 &
2 (04AXA01GJ003 & 04AXA01GJ004) in order to prevent unwanted/unexpected control
from A0 and A3.
6.1.4. 500kV Quang Trach Power Plant – (T1) Generator Step Up Transformer
1) Generator Step Up Transformer shall be fully commissioned as per:
- QT1-0-GUT-Q-BAT-60-00003
T1(GSUT)– Site Test and Inspection Plan
- QT1-0-GUT-E-BAT-05-00002
T1(GSUT) – Operation and Maintenance Instruction
Manual
2)
Annunciation at GSUT Local Control Panel (14BAT10GH001) shall show no abnormal
conditions.
3)
Annunciation at GSUT Remote Tap Control Cubicle (14BAT10GH002) shall show no
abnormal conditions.
4)
SC1 (Remote-Local) selector switch at GSUT Remote Tap Control Cubicle
(14BAT10GH002) shall be set at ‘Local’.
5)
SP1 (Parallel-Independent) selector switch at GSUT Remote Tap Control Cubicle
(14BAT10GH002) shall be set at ‘Independent’.
4 of 11
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Rev. B
6)
SA (Master-Follower) selector switch setting at GSUT Remote Tap Control Cubicle
(14BAT10GH002) is irrelevant.
7)
SB1 (Auto-Manual) selector switch at GSUT Remote Tap Control Cubicle
(14BAT10GH002) shall be set at ‘Manual’.
8)
Set the OLTC to tap position 10 (corresponding to 525 kV)
9)
The secondary side of the T1(GSUT) has been opened and reinforced with an insulator.
A safe distance between phases must be ensured. The terminal block cover must be sealed.
6.1.5. 500kV Quang Trach Power Plant – 901 (Generator Circuit Breaker)
1) Generator Circuit Breaker-1 shall be fully commissioned as per :
- QT1-0-GCB-Q-BAC-05-00003 GCB – Installation, Operation and Maintenance
Manual
2) The GSUT protection CT cable terminal is connected and it must be shorted
6.1.6. 500kV Quang Trach Power Plant – Protection and Metering System
1) Unit 1 Overall Protection Panel (14CHD01), Unit 1 GSUT Protection Panel (14CHB01),
shall be fully commissioned as per:
- QT1-0-PMS-Q-CHB-60-00003 Site Test and Inspection Plan & Procedure for
Protection Panel
- QT1-0-OHL-Q-ABA-60-00026 500KV EHV OHL- Site Test and inspection Plan
and Procedure for Metering system
- QT1-0-PMS-E-CHB-05-00005
Protection & Metering System – Operation and
Maintenance Instruction Manual
2) Annunciation at Unit 1 Overall Protection Panel (14CHD01), Unit 1 GSUT Protection Panel
(14CHB01), shall show no abnormal conditions.
3) 86SUT11 & 86SUT12 lockout relay at Unit 1 GSUT Protection Panel (14CHB01) shall be
reset.
4) The 87 (Differential) protection relay is equipped with 2nd and 5th harmonic detection
functions, which must be activated to ensure accurate and reliable operation of the protection
scheme. During initial energization, inrush current can result in elevated levels of 2nd and
5th harmonic components, potentially causing the harmonic detection logic to operate.
6.2
Power Back Energizing Procedure
1) 500kV Quang Trach Power Plant – (T1) Generator Step Up Transformer
2) Close DS (581-7) from relevant 500kV Quang Trach Switchyard control panel.
3) Close CB 561 from relevant 500kV Quang Trach Switchyard control panel.
5 of 11
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Rev. B
4) Voltages level (phase to phase & phase to neutral) on the 500kV side of Generator Step Up
Transformer shall be checked from P645 protection relays in Unit 1 OHL Protection Panel
5) Soaking test of T1 (Generator Step Up Transformer), will be conducted during the Stage
#2. Duration and check points shall be agreed between the EPC Contractor and the Owner,
for the PD (Partial Discharge) test for 1 hour (Max 3 hours)
6 of 11
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
ATTACHMENT # 1.
(Responsibility Organization Chart For back energizing of UNIT#1)
7 of 11
Rev. B
RESPONSIBILITY ORGANISATION CHART FOR BACK ENERGIZING OF UNIT#1
※ JOB DESCRIPTION
Transformer Area
500kV SWYD
○ Operation for CB/DS/ES in 500kV SWYD
EVN
○ Comunication with GRID
PECC1
○ Witness
HDEC
○ Cooperation with EVN to operate
○ Comunication with Power Plant
○ Log on check sheet
○ Lock & Tag out for Tansformer
○ Safety Guard during energization
○ Log on check sheet
VENDOR
○ TOJI
- Monitoring for Protection System
- Support for operation to EVN
○ TOA
- Monitoring for Transfor Protection System
- Monitoring for Triff Meter
Remark
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Attachment 2.
(Key single line Diagram (Boundary Marked))
8 of 11
Rev. B
Attachment. 2 Key Single Line Diagram
UNIT#1
NOTE]
The back energizing has two(2) Stages according to HDEC actual
site construction schedule for your information.
- Stage 1 : 500kV SWYD BUS-C52, GSUT Bay energizing
- Stage 2 : UAT-1A&B Bay, 11kV SWGRs energizing
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Attachment 3.
(Check list for Back Energizing)
9 of 11
Rev. B
Attachment #3
BACK FEEDING PROCEDURE SYSTEM FOR HV SYSTEM OF UNIT
#1 (GSUT/UAT/IPB/NSPB/UNIT#1 MV SWGR)
1.0. CHECK LIST FOR THE PRESENT STATUS OF CB/DS/ES (Before back-energizing)
N
o
Location
Description
Number
Status
561-6
CLOSED
561
OPENED
3
DS for CB 561 to DS 571-7
Outgoing CB via 585 VUNG
ANG
DS for CB 561
561-8
CLOSED
4
ES for CB 561
561-65 /
561-85
OPENED
5
Outgoing CB via C51
571
CLOSED
6
DS for CB 571 to C51
571-1
CLOSED
7
DS for CB 571
571-6
CLOSED
8
DS for Air Line
571-7
CLOSED
9
ES for Air Line
571-74 /
571-76
OPENED
ES for CB 571
571-15
OPENED
ES for CB 571
571-65
OPENED
12
Outgoing CB via C52
581
CLOSED
13
DS for CB 581 to C52
581-2
CLOSED
14
DS for Air Line
581-7
OPENED
15
DS for CB 581
581-8
CLOSED
16
ES for Air Line
581-74 /
581-76
OPENED
17
ES for CB 581
581-25
OPENED
18
19
ES for CB 581
ES for IPB
DS for CB(14BAC01)
Primary
CB(14BAC01)
ES for Generator
581-85
901-38
OPENED
OPENED
901-3
901
901-05
OPENED
OPENED
CLOSED
1
2
10
11
20
21
22
500 kV
SWYD
GCB
CONTRACTOR
Time
OWNER
Signature:
Signature:
Name:
Name:
Date:
Date:
1 of 5
PIC
Scope
TOJI
AND
COMMIS
SIONING
TEAM
LILAMA
AND
COMMIS
SIONING
TEAM
BACK FEEDING PROCEDURE SYSTEM FOR HV SYSTEM OF UNIT
#1 (GSUT/UAT/IPB/NSPB/UNIT#1 MV SWGR)
2.0 CHECK LIST FOR VOLTAGE OF VT(500KV SWYD)
2-1 14ATC IN 500kV VT _ CORE 1
Phase
L1 - N
L2 - N
L3 -N
Phase Relation
Measure Point
XVT1-11 & 7
XVT1-12 & 7
XVT1-13 & 7
Voltage
Phase
L1 - L2
L2 - L3
L3 - L1
Measure Point
XVT1-11 & 12
XVT1-12 & 13
XVT1-13 & 11
Voltage
Remark
Scope
TOJI and
For Protection Commissi
oning
Team
Note : Check FVT11 Closed before charging, check phase sequence and check voltage at relay F87L1
2-2 14ATC CORE 2
Phase
Measure Point
L1 - N
Voltage
Phase
Measure Point
XVT2-11 & 7
L1 - L2
XVT1-11 & 12
L2 - N
XVT2-12 & 7
L2 - L3
XVT1-12 & 13
L3 -N
XVT1-13 & 7
L3 - L1
XVT1-13 & 11
Voltage
Remark
Scope
TOJI and
Commissi
For Metering oning
Team
Phase Relation
Note : Check FVT21 Closed before charging, check phase sequence and check voltage at relay FR
Phase
L1 - N
L2 - N
L3 -N
Phase Relation
Measure Point
XVT2-14 & 8
XVT2-15 & 8
XVT1-16 & 8
CW
Voltage
Phase
L1 - L2
L2 - L3
L3 - L1
Measure Point
XVT2-14 &15
XVT2-15 &16
XVT1-16 & 14
Voltage
Remark
Scope
TOJI and
For Protection Commissi
oning
Team
Note : Check FVT22 Closed before charging, check voltage at relay F87L2, multimeter
2-3 14ATC CORE 4
Phase
L1 - N
L2 - N
L3 -N
Phase Relation
Measure Point
XVT4-8 & 7
XVT4-9& 7
XVT4-10 & 7
CW
Voltage
Phase
L1 - L2
L2 - L3
L3 - L1
Measure Point
XVT4-8 & 9
XVT4-9& 10
XVT4-10 & 8
Voltage
Remark
Scope
For
TOJI and
Tariff Metering Commissi
oning
Team
Note : Check FVT41 Closed before charging, check phase sequence and check voltage at tariff meter 2A
CONTRACTOR
OWNER
Signature:
Signature:
Name:
Name:
Date:
Date:
2 of 5
BACK FEEDING PROCEDURE SYSTEM FOR HV SYSTEM OF UNIT
#1 (GSUT/UAT/IPB/NSPB/UNIT#1 MV SWGR)
3.0 CHECK LIST FOR VOLTAGE OF VT(TPR)
3-1 . GSUT PROTECTION PANEL
Phase
L1 - N
L2 - N
L3 -N
N -G
Measure Point
Voltage
XP:1 – XP:4
XP:2 – XP:4
XP:3 – XP:4
XP:4 – GROUND
Phase
L1 - L2
L2 - L3
L3 - L1
Phase Relation
Measure Point
Voltage
XP:1 – XP:2
XP:2 – XP:3
XP:3 – XP:1
Remark
Scope
PT FOR GSUT LILAMA
and
Protection
Commissi
Panel
oning
Team
CW
Note : Check F35-2,3,4 MCB ON & PT Links Close before charging at GCB Panel
Phase
L1 - N
L2 - N
L3 -N
N -G
Measure Point
Voltage
XP:5 – XP:8
XP:6 – XP:8
XP:7 – XP:8
XP:8 – GROUND
Phase
L1 - L2
L2 - L3
L3 - L1
Phase Relation
Measure Point
Voltage
XP:5 – XP:6
XP:6 – XP:7
XP:7 – XP:5
CW
Remark
PT FOR GSUT LILAMA
Protection
and
Panel
Commissi
oning
Team
Note: Check F36-6,7,8-MCB ON & PT Links Close before charging at GCB Panel
4.0 CHECK SHOCK CURRENT, DIFFERENT CURRENT AT RELAY F87L1, F87L2, 87O, 87GSUT
- Relay F87L1, F87L2: Check by TOJI
- Relay FO11, FSU11, FSU12: Check by LILAMA
CONTRACTOR
OWNER
Signature:
Signature:
Name:
Name:
Date:
Date:
3 of 5
Scope
BACK FEEDING PROCEDURE SYSTEM FOR HV SYSTEM OF UNIT
#1 (GSUT/UAT/IPB/NSPB/UNIT#1 MV SWGR)
4.1 CHECK LIST FOR SOAKING TEST FOR GSUT
4-2 Check Sheet for Generator Step-Up Transformer) during soaking Test (KKSNO :12MKA01)
Item
& Time
Winding
Temp
Oil
Temp
Oil
Level
Volt
at
HV
Side
Volt
at LV
Side
Tap
position
Arrest
counter
Oil
Leakage
Strange
Sound
MW
Remark
Scope
Commiss
ioning
Team
Before
Energizatio
n
The data will be written every hour after energization till 1 hour
4 of 5
BACK FEEDING PROCEDURE SYSTEM FOR HV SYSTEM OF UNIT
#1 (GSUT/UAT/IPB/NSPB/UNIT#1 MV SWGR)
CONTRACTOR
OWNER
Signature:
Signature:
Name:
Name:
Date:
Date:
5 of 5
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Attachment 4.
(JSA & Emergency Contact Protocol)
10 of 11
Rev. B
Attachment # 4
1.1
Health and Safety
CAUTION
All necessary permits and/or safety documentation required to conduct the work must be in force
prior to starting. Ensure that all personnel not involved in conducting the commissioning activities
are clear of area.
1.1.1 The commissioning of back feeding system shall be carried out in accordance with approved Health &
Safety Management Plan (QTI-L-O-020-05-00004), Emergency and Response Procedure (QT1-L-O020-05-00005_0) and local environmental regulation..
1.1.2
Areas that may present a safety hazard are to be defined using high visibility Sign board “TEST
IN PROGRESS" to be posted.
1.1.3
No entry unauthorized people into the test area. Entry is to be granted only with the consent of
the commissioning team.
1.1.4
Fire fighting (deluge) system should be fully operational and in service. And portable fire
extinguishers are available at critical location.
1.1.5
The test procedure should be understood by all concerned before proceeding with
commissioning.
1.1.6
AII activities in the test area should be carried out in a safe, controlled and agreed manner.
1.1.7
All workers must wear Personal Protective Equipment (PPE) and the standard safety equipment.
1.1.8
Direct communication should be maintained throughout the test between the plant under test and
any other switchgear local stop/start position. And It may be required with the CCR.
1.1.9
All areas must be sufficiently illuminated.
1.1.10
No hazardous walkways, ladders or stairways should be used. Substantial walkways and
platforms where needed are to be available.
1.1.11
Barriers, danger signs, tags, area restrictions, etc. should be used by permit to work and lock
out/ tag out procedure in accordance with the commissioning plan.
TWO (2) X 700MW QUANG TRACH I THERMAL POWER PLANT
COMMISSIONING PROCEDURE FOR FEEDWATER SYSTEM PROCEDURE
1.1.12
Rev.B
Job Safety Analysis
Task : QT1-EVNPMMB2-MC-HDEC-CC1 Commissioning Procedure for Power BACK Feeding
Procedure
Step of Job
Kinds of Hazard
1. Lack of arrangement of material
and poor housekeeping.
1. Housekeeping
2. Slips and trips
How to Control Hazards
1. Ensure that good housekeeping shall be
performed in all working area.
2. Ensure all commissioning areas are
blocked without PTW
3. Provide warning signs and tags for
energized panels and and electrical cables.
4. Provide fire extinguishers (CO2, 3kg) and
Foam extinguishers (25 or 50kg)
2. Installing Barricades
with safety signage at
the workplace
1. Un-authorized
personnel
in
work area
2. Electric shock
3. Contact with energized power
line.
1. Install barricades and warning signs.
2. Access to the work location will be
adequately controlled by assigning personnel at
the entrance.
1. Use insulating gloves during work
2. Use the device properly.
3. Checking power supply
prior to work
Electric shock when contact conduit
part
3. Exposure to live wires and parts will be
prevented by adequate insulation and isolating
them (cabinets, boxes, screens, barriers, covers,
and partitions or shutters.).
4. Visual checks and status checks for 500kV
AIS, GSUT and Protective relays will be
conducted prior to initial energization
1. Use insulating gloves & goggles during
work
2. Check power supply before doing work
4. Function/Loop check
Electric shock when contact with
a part of the conduit
3. Use the devices properly and ground to the
device.
4. In case of connection laptop to relay, use
LAN cable
5. After finishing work, restore everything to
its original condition and close the door.
TWO (2) X 700MW QUANG TRACH I THERMAL POWER PLANT
COMMISSIONING PROCEDURE FOR FEEDWATER SYSTEM PROCEDURE
Electric Shock
Fire
5. Back Feeding
Spillage
Rev.B
1. Generator step up transformer area will be
barricaded and access will be controlled or
restricted to authorized personnel only.
2. Prevent against electric shock or arc blast
when working on live panels by using proper
PPE and protective tools.
3. Energized panel zones will be clearly
marked with safety lines and informative signs
to ensure awareness and prevent accidents.
4. The location of the closest fire
extinguishers will be checked in case of fire.
5. Fire trucks standby ready condition.
TWO (2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
EMERGENCY AND RESPONSE
Rev. B
[Annex 1] Emergency Response Communication, and Emergency Response Team
TWO (2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
EMERGENCY AND RESPONSE
Emergency Response Team (ERT)
Rev. B
TWO (2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
EMERGENCY AND RESPONSE
Emergency Number
Rev. B
TWO (2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
EMERGENCY AND RESPONSE
Emergency Contact list
Rev. B
TWO(2) x 700 MW QUANG TRACH I THERMAL POWER PLANT
POWER BACK FEEDING PROCEDURE
Attachment 5.
(Erection Completion Certificate PKG _QT1-HHHH-E-0064)
11 of 11
Rev. A
Attachment #5
ECC No: QT1-HHHH-E-0064
QT1-10-OHL-E-ABA-ECC-0006