GIS INSTALLATION PROCEDURE
Ø
CHECK THE FLOOR LEVEL AND I BEAMS ARE IN PROPER
LEVEL IF SO DO LEVEL CORRECTIONS BY GRINDING OR USING METAL SHIMS
Ø
CHECK THE LOADING CAPACITY OF OFFLOADING
PLATFORM IN FRONT OF THE GIS ROOM. IT SHOULD BE CAPABLE OF CARRYING THE LOAD OF
THE HEAVIER GIS PARTS AND SHOULD HAVE AN EXCESS MARGIN OF 1.5 TONS.
Ø
ENSURE THAT ROOM IS DUST PROOF AND CLEAN
Ø
ENSURE THAT OPENINGS PROVIDED ARE AS PER
APPROVED DRAWING AND CHECK ONCE AGAIN AFTER INSTALLING BAYS EITHER IT WAS
MATCHING TO BAY OR NOT
Ø
ENSURE THAT NO OTHER THEN RELATED TO GIS
INSTALLATION PERSON IS ALLOWED TO WORK AREA
Ø
STICK GIS GA DRAWINGS ON THE WALLS FOR EASY
REFERENCE
Ø
ENERGIZE THE HIGH BEAM LIGHTING CIRCUITS IN THE
GIS ROOM
Ø
ENSURE THAT THE LOAD TESTING OF EOT CRANE IS COMPLETED
PRIOR TO THE SHIFTING OF GIS BAYS
Ø
PLAN THE SHIFTING OF GIS TO SITE AFTER
IDENTIFYING SUITABLE LOCATIONS IN FRONT OF GIS ROOM FOR STORAGE OF GIS BAYS,
ACCESSORIES AND THE PARKING OF OFFLOADING CRANE AND TRAILERS.
Ø
FIRST CHECK THE GIS BELONGS TO YOUR SITE AND
AFTER OPENING THE PACKINGS CHECK THE SI NOS MATCHING WITH FAT REPORT
Ø
CONFIRM WEATHER THE GIS BAYS WERE SINGLE OR
DOUBLE COMPARTMENT
Ø
SHIFT THE BAYS TO INSIDE AND PLACE IN PROPER
POSITION AS PER EQUIPMENT LATOUT
Ø
AFTER PLACING IT IN PROPER POSITION START THE
PROCEDURE OF COMPARTMENT COUPLING
Ø
CHECK THE TOTAL MATERIALS ARRIVED AS PER THE
PACKING LIST AND CHECK FOR THE TOOLS AND THE EQUIPMENTS TO BE SUPPLIED BY THE
MANUFACTURER AND THE INSTALLATION CONTRACTOR
.
Ø
AFTER REMOVING THE COMPARTMENT JOINT CAP OF BOTH
BAYS CLEAN THE
CHAMBER THOROUGHLY WITH VACCUME CLEANER AND APPLY THE WHITE
GREESE TO GAS CUT(INDUSTRIAL TYPE)
Ø
CHECK THE MALE AND FEMALE CONTACTS WERE SPACED
AT EQUAL DISTANCE IF NOT FAULTY CONTACT TO BE CHANGED
Ø
THEN SLOWLY CLOSE THE BOTH THE BAY COMPARTMENTS
BY GETTING IT TOGETHER REMOVE THE POLYTHENE COVER (TEMPORARILY CLOSED TO AVOID
DUST ENTRY) AND START FIXING OF BOLT AND NUT TO COUPLING.
Ø
IN SAME WAY COMPLETE THE TOTAL BUS
Ø
AFTER COMPLETING THE COMPARTMENT COUPLING WE CAN
START THE FOLLOWING PARALLEL WORKS
1.
DENSITY METER FIXING
2.
VACCUMING AND GAS FILLING
3.
VT INSTALLATION IS SAME AS COMPART MENT JOINTING
4.
PLATFORM ARRANGEMENT
5.
WELDING TO I BEAM
Ø BEFORE
VACCUMING FOR BUS BAR AND CABLE SEAL END WE HAD TO COMPLETE THE FOLLOWING WORKS
PD SENSOR TO BE INSTALLED
FEMALE CONNECTOR FOR CABLE SEAL END TO BE
FIXED
VACCUM AND GAS
FILLING
IDENTIFY THE BAY AND CHAMBER FOR WHICH VACCUM TO BE DONE
OPEN THE CAP OF THE CHAMBER TO BE VACCUM CLEAN IT AND SILICA
GEL TO BE REMOVED CLOSE THE CHAMBER PLATE
CONNECT THE HOSE TO
THE GD VALVE TO VACCUM PUMP AND ENSURE
THAT DENSITY METERS AND WERE INSTALLED PRIOR VACCUMING.
CONNECT THE PIRANI GUAGE SENSOR TO VACCUM PUMP
NOTE THE START TIME AND RECORD THE VALUES FREQUENTLY TIME
AND VACCUM PRESSURE AND TIL IT REACHES 0.2TORR
IN BELOW PIC
GATE VALVE-1-
--------------- SF6 GAS HOSE CONNECTED TO VALVE
GATE VALVE-2------------------ PUMP VALVE
GATE VALVE -3 ---------------- USED TO CONNECT PIRANI GUAGE
VACCUM SENSOR
GATE VALVE-4 ----------------- CONNECTED FOR CHAMBER HOSE
FOR VACCUMING THE
VALVES POSITION TO BE AS BELOW
VALVE-2 ---------------- OPEN
VALVE-3 ----------------CLOSED
VALVE-1---------------- CLOSED
VALVE-4 ---------------OPEN
FOR MEASURING
VACCUM PRESSURE VALVE POSITION TO BE AS FOLLOWS
VALVE-2 ---------------- CLOSED
VALVE-3 ----------------OPEN
VALVE-1---------------- CLOSED
VALVE-4 ---------------OPEN
FOR FILLING SF6
GAS VALVE POSITION TO BE AS FOLLOWS
VALVE-2 ---------------- CLOSED
VALVE-3 ----------------CLOSED
VALVE-1---------------- OPEN
VALVE-4 ---------------OPEN
WHILE FILLING THE GAS WE HAVE TO OBSERVE THE DENSITY METER
FOR GAS PRESSURE
|
SI NO
|
ACTIVITY
|
NO OF DAYS REQD
|
MANPOWER RE
|
|
|
1
|
BAY INSTALLATION AND ALIGNMENT WITH COMPARTMENT COUPLING
|
4 DAYS FOR 9 BAYS
|
15 ( FOR SHIFTING TIME) AND FOR ALIGNMENT WORKS 10 PEOPLE IS USED
|
|
|
2
|
VACCUM AND GAS FILLING
|
1 DAY 1 BAYS
|
2
|
|
|
3
|
VT INSTALLATION
|
2VTS PER DAY
|
6
|
|
|
4
|
PLATFORM ARRANGEMENT
|
4 DAYS
|
10
|
|
|
5
|
LCC PANELS
|
4 DAYS
|
10
|
|
|
|
|
|
|
|
LCC PANELS INSTALATION
Ø ENSURE THAT BEFORE STARTING OF PANEL
ERECTION EOT CRANE IS FREE
Ø CHECK THE OPENING SIZES AND HORIZONTAL
CLEARENCES WERE AVAILABLE FOR LCC PANELS FIXING
Ø MARK ON THE FLOOR/WALL PANEL LOCATION
AND CROSS CHECK THAT LCC PANEL SHOULD BE EXACTLY INFRONT OF CORRESPONDING BAY
Ø MARK THE LOCATION OF FOUNDATION BOLTS AND
START DRILL N FIX THE PANELS
NECESSARY MATERIALS TO CHECK BEFORE STARTING OF GIS WORKS
MAN POWER AND MATERIALS
1.
PACKING LIST
2.
SKILLED MAN POWER
3.
AUTHORISED RIGGER FOR EOT CRANE
OPERATION
4.
CHAIN BLOCKS
5.
TOOL KIT
6.
LEVEL BLOCK
7.
LIFTING BELTS
8.
VACCUM MACHINE
9.
WATER BOTTLE WITH SPRAY ARRANGEMENT
10.
INDUSTRIAL TISSUE PAPERS
11.
2.5T PALLET TROLLEYS
12.
10T JACKS FOR LIFTING AND PLACING OF
GIS BAYS
13.
WOODEN RACKS IN GIS ROOM FOR STORING
MATERIALS
14.
STEEL CABINET WITH LOCKS
15.
WIDE TABLE -1 no.
16.
SMALL TABLE – 1no.
17.
CHAIRS – 4nos.
18.
32A AND 16A POWER SUPPLY OUTLETS
19.
AVAILABLITY OF VACCUM PUMP WITH BYPASS
VALVE OR DELO MACHINE
20.
PIRANI GUAGE
21.
DEW POINT METER
22.
GAS LEAKAGE METER
23.
19MM HOSE FOR VACCUM AND GAS FILLING
