WHO final

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Electrical Inspection Report of Federal EPI Ware Houses

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Contents

1. Introduction:............................................................................................................ 4

2. Electrical survey Objective: ................................................................................... 4

3. Scope of Work: ....................................................................................................... 4

4. Methodology: .......................................................................................................... 4

5. As built/ As Installed drawings: ............................................................................. 5

Referred Pages (1-24)

6. Electrical Network Condition: ................................................................................ 6

Main Distribution Company Supply and Generator Supply: .................................................... 7

Substation: ............................................................................................................................15

Ware House: .........................................................................................................................26

Fire Alarm System: ................................................................................................................58

CLOSED CIRCUIT TV (CCTV) SYSTEM: .............................................................................61

Exit Guide Boards:.................................................................................................................63

RECOMMENDATIONS FOR PANEL BOARDS: ...................................................................65

7. Standards followed: ............................................................................................. 77

Low Voltage Switchgear and Switchboards: ..........................................................................77

Summary: ..........................................................................................................................77

Reference International Standards: ....................................................................................77

Reference for Best international Practice: ..........................................................................78

General Observation: .........................................................................................................78

Power Supply Cables: ...........................................................................................................80


General Observations: .......................................................................................................80

Cable in Conduits: ..............................................................................................................81

Conduits: ...............................................................................................................................81



Lightning Protection: ..............................................................................................................82



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Grounding and Bonding: ........................................................................................................82


Capacitor Banks: ...................................................................................................................83


General observations / recommendations: .........................................................................84

8. Proposed Drawings: ............................................................................................. 85


9. Proposed Drawings for Nine New Units: ............................................................ 86


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1. Introduction: The execution of the order follows for evaluation of electrical distribution network in accordance

with electrical standards and international best practices in support of sustainable electrical

network development.

2. Electrical survey Objective: The key objective of this task is to determine and ensure how the quality of electrical service

and electric supply does not decline to the FEDERAL EPI ware houses at NIH Islamabad.

3. Scope of Work: The scope of work was to inspect and assess compliance report for electrical distribution

network installed for the supply of labs.

The scope of evaluation for up gradation is as follows:

i. To inspect the electrical distribution network installed for EPI warehouses.

ii. To evaluate the installed electrical distribution network as per electrical norms.

iii. Prepare and submit as built drawings for existing electrical distribution network for EPI

ware houses

iv. Prepare and submit the proposed drawing for modernization/up gradation.

v. Prepare and submit proposed design drawing for the nine new units.

4. Methodology: The methodology involved the implementation of this approved electrical assessment survey to

capture relevant data to meet the scope of work. During this electrical compliance survey,

interviews and discussions were held with relevant personal to clarify the response of our

internal electrical protocols.

Visual inspections were carried out to determine the conditions of the networks on the intake

substations, transformers and over head lines.

The team was accompanied to the sites by nominated officials from WHO and NIH. Basic

electrical tools were also used to verify the conditions of the switchgear, distribution boards and

end use power sockets.

On completion of the electrical compliance evaluation, draft report was prepared by the team

and submitted to the customer for corrective actions / up gradations plans based on the

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findings. Implementation of corrective actions plan is later enforced and monitored as a

separate project.

5. As built/ As Installed drawings: Through this drawing, we intent to provide true detail conditions and important information about

the installed electrical infrastructure of M/s WHO FEDERAL EPI Ware Houses including

associated works.

As we did not find any plan/designed drawings for the benchmarking, therefore to get the basic

useful information we explored the installed individual distribution panels and boards in live

environment, nearest to possibility.

It was observed that the amendments /alteration /modifications were done in the electrical

power supply network without considering any design parameter and enhancement of electrical

capacity.

It was also observed that existing electrical network was installed without considering the

electrical coordination study. Therefore the integrity of electrical network could not be verified.

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6. Electrical Network Condition:

The condition of most of the networks inspected was better then MBL and Virology labs but not

as per standards. The majority of the equipment needed urgent attention as this has a direct

influence on electrical network performance quality for supply and safety. The following photos

are evidence of the condition found due to lack of maintenance including alterations in electrical

distribution boards without consulting any design and plan.

Ware houses and substation did not comply with most of the electrical standards/norms and

electricity network is not in a very acceptable condition.

There is no proper preventive maintenance plan and only emergency/corrective maintenance

was done depending upon the nature of the fault.

The electrical network system has not been upgraded for a long time and is no longer properly

adequate to handle the electrical load requirement for future loads

The general condition of substation and extended network is not in acceptable condition as it is

very old, obsolete and the protection system is not intact. Therefore it needs to be upgraded as

soon as possible.

Legend: Red for faults and findings

Black for Recommendations

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Main Distribution Company Supply

and Generator Supply:

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TRANSFORMER SILICA GEL

1. TRANSFORMER SILICA GEL TO BE REPLACED AS IT HAS CHANGED ITS COLOUR TO BROWN

2. TRANSFORMER OIL DI-ELECTRIC SHOULD BE DONE TO CHECK THE STRENGTH OF OIL

3. TRANSFORMER OIL LEVEL TO BE VERIFIED AS NO INFORMATION AVAILABLE ON TRANSFORMER

DISTRIBUTION SUPPLY METERING PANEL

1. PANEL NEED TO BE REPLACED AS ITS RUSTED AND ITS GLASS PLATE IS DAMAGED.

2. SLEEVES TO BE PROVIDED TO PROTECT CABLE DAMAGE

3. CABLE GLANDS TO BE PROVIDED

1. PANEL SHOULD BE LOCKED WITH PAD LOCKED.

2. PANEL EARTH TO BE PROVIDED.

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DISTRIBUTION SUPPLY METERING PANEL

1. PANEL CLEANING TO BE DONE PROPERLY

2. WIRES TO BE ARRANGED PROPERLY AND TAGGING TO BE DONE WITH PROPER FERROLES

3. PANEL DOOR , CT’S AND METER EARTH TO BE PROVIDED.

4. CABLE GLANDS TO BE SEALED TO PROTECT FROM DUST , VERMIN AND INSECTS

LOW POWER FACTOR AND MAXIMUM DEMAND INDICATOR PANELTY

1. LOW POWER FACTOR PENALTY IS BEING IMPOSED AS SHOWN ON BILL. POWER FACTOR IMPROVEMENT PANEL SHOULD BE INSTALLED.

2. LOAD IS OVER THE ALLOWED LIMIT ( SANCTIONED LOAD) SO MAXIMUM DEMAND INDICATOR METER READING PENALTY IS ALSO IMPOSED. SANCTIONED LOAD TO BE INCREASED FROM IESCO FROM 266 kW TO 800 kW AS THE NEW NINE UNITS WILL ALSO ADD AND FOR FUTURE LOAD IN DRY WARE HOUSE

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MAXIMUM DEMAND INDICATOR PANELTY

3. MDI PENALTY IMPOSED COMPLETE YEAR

GENERATOR EARTH

1. GENERATOR EARTH CABLE TO BE CLAMPED WITH WALL AND PROPERLY ARRANGED. IT SHOULD BE BURRIED INSIDE EARTH AND CONNECTED TO EARTH PIT

2. EARTHING PIT TO BE PROVIDED WITH PROPER TAGGING AND COVER

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RECOMMENDATION FOR EARTHING CLAMPS FOR WALL AND EARTHING PIT

EARTH PIT EARTH CABLE CLAMPS

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DISTRIBUTION SUPPLY AND GENERATOR BURRIED CABLES TO SUBSTATION

1. LV CABLES ROUTE FROM WAPDA AND GENERATOR TO MAIN SUBSTATION SHOULD BE PROPERLY IDENTIFIED. CABLES MARKER PLATE SHOULD BE PROVIDED . DETAILS SHOWN IN NEXT SLIDE

2. STEEL WIRED ARMOURED CABLES TO BE USED FROM TRANSFORMER TO MAIN DESTRIBUTION BOARD FOR PROPER PROTECTION.

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RECOMMENDATION FOR BURRIED CABLES

RECOMMENDATIONS FOR LOCALLY EARTHING SYSTEM

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RECOMMENDATION FOR GENERATOR

1. FUEL PUMP SHOULD BE PROVIDED FOR FILLING THE GENERATOR FUEL TANK . FUEL TANK SHOULD BE ALSO AVAILABLE

2. GENERATOR MAINTENANCE LOG SHEET SHOULD BE MAINTAINED

GENERATOR INSPECTIONS 1. AS GENERATOR HRS HAVE CROSSED 2000

FOLLOWING INSPECTIONS ARE TO BE DONE I. GENERATOR LEAD ROUND CABLE CHECK II. GENERATOR SET VIBRATION TEST/RECORD III. GENERATOR WINDING INSULATION TEST IV. STATOR LEAD CHECK COMPLETE MAINTENANCE SCHEDULE IS ALSO ATTACHED AT THE END OF REPORT

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Substation:

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SUBSTATIOIN BUILDING RECOMMENDATIONS

1. MAIN BUILDING EARTH SHOULD BE PROVIDED WITH EARTH ROD AS ITS NOT VISIBLE

2. ATS, MANUAL CHANGE OVER, PHASE FAILURE PANELS SHOULD HAVE EARTH TERMINALS THAT SHOULD BE CONNECTED TO MAIN EARTH

3. EMERGENCY LIGHT TO BE INSTALLED IN MAIN SUBSTATION BUILDING FOR EMERGENCY/MAINTENANCE SHUTDOWNS

4. FIRE ALARM SYSTEM SHOULD BE INSTALLED AS PRESENTLY NOT AVAILABLE AND FIRE EQUIPMENTS LIKE SAND BUCKETS, FIRST AID BOX AND FIRE EXTINGUISHERS TO BE PROVIDED

5. CABLE TRAY OR CONDUITS TO BE INSTALLED 6. SINGLE LINE DIAGRAM TO BE PROVIDED ON A1

SIZE TO BE PROVIDED FOR COMPLETE SYSTEM 7. DISTRIBUTION BOARD SHOULD BE PROVIDED.

AT PRESENT ONLY ONE THREE PHASE BREAKER IS USED FOR LIGHTS AND FANS WHICH IS NOT ACEPTABLE

RECOMMENDATIONS FOR SUBSTATION EARTH LEAKAGE

PROTECTION DEVICES

THE SELECTION OF EARTH LEAKAGE PROTECTION DEVICES AT MAIN SWITCHBOARDS MUST TAKE INTO ACCOUNT THE REQUIREMENT FOR DISCRIMINATION WITH DOWNSTREAM PROTECTIVE DEVICES . FOR SMALL SUPPLIES (200A OR LESS), A 300 MA RCD DEVICE MAY BE USED, WITH TIME DELAY OF 200 MS. FOR LARGER SUPPLIES (ABOVE 200A), EARTH LEAKAGE PROTECTION RELAYS MAY BE USED IN CONJUNCTION WITH MCCBS OR ACBS INCORPORATING A TRIP UNIT (E.G. 1A, 3A, 5A WITH A SUITABLE TIME DELAY TO ENSURE PROPER DISCRIMINATION WITH DOWNSTREAM PROTECTIVE DEVICES). IRRESPECTIVE OF THE EARTH LEAKAGE PROTECTION PROVIDED AT THE MAIN SWITCHBOARD, THE INCOMER MCCB OR ACB SHALL HAVE SHORT-CIRCUIT PROTECTION TO ENSURE TRIPPING WITHIN 400 MS TAKING INTO ACCOUNT THE EARTH FAULT LOOP IMPEDANCE. AT PRESENT THERE IS ONLY SHORT CCT PROTECTION INSTALLED ON MCCB

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SUBSTATION INCOMING PANEL 1. AMMETER TO BE CONNECTED

AND SELECTOR SWITCH TO BE PROVIDED

2. VOLTMETER WIRES ARE ALSO DISCONNECTED AND ONLY SINGLE PHASE VOLTAGE IS SHOWING. ALL CONNECTIONS OF SELECTOR SWITCH TO BE COMPLETED

SUBSTATION INCOMING PANEL 1. SUBSTATION INCOMING PANEL IS HAVING NO

INFORMATION REGARDING POWER FACTOR OF COMPLETE SYSTEM. POWER FACTOR DISPLAY METER SHOULD BE INSTALLED

2. INCOMING CABLE SHOULD BE FIRST COMING TO PHASE FAILURE PANEL BREAKER AND THEN TO ATS AND FINALLY TO MAIN DISTRIBUTION PANEL. MAIN BREAKER WITH PHASE FAILURE PROTECTION SHOULD BE 800A AND DISTRIBUTION BREAKER TO BE 600A. AT PRESENT 600A BREAKER IS HAVING PHASE FAILURE PROTECTION WHILE 800 A BREAKER IS HAVING ONLY SHORT CIRCUIT PROTECTION

3. CABLES TAGGING TO BE PROVIDED WITH INCOMING AND OUTGOING INFORMATION AND CABLE SIZE.

4. CABLE TERMINATION TO BE DONE PROPERLY AND SLEEVES TO BE PROVIDED

5. MAIN PANEL BREAKER TAGGING TO BE DONE 6. STANDARD NOT FOLLOWED AS 4X 4 CORE CABLE

INSTALLED WITH THREE POLE BREAKER. IT SHOULD BE FOUR CORE CABLE ONLY

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SUBSTATION INCOMING PANEL

7. LOAD SCHEDULE AND PANEL DIAGRAM TO BE PROVIDED

8. MAIN INCOMING PANEL DOORS FROM BEHIND SHOULD BE KEY LOCKED AS BUS BAR ARE ENERGIZED

9. EARTH ELECTRODE NOT VISIBLE OUTSIDE MAIN SUBSTATION BUILDING

10. PANEL IS RUSTED . NEEDS PROPER CLEANING

11. MISSING GLANDS TO BE PROVIDED 12. EARTH LEAKAGE PROTECTION DEVICE

TO BE INSTALLED

RECOMMENDATION FOR EARTH ELECTRODE

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PHASE FAILURE PANEL 1. CABLES TAGGING TO BE PROVIDED WITH

INCOMING AND OUTGOING INFORMATION AND CABLE SIZE.

2. 4X4 CORE CABLE USED FOR THREE PHASES SEPARATELY. IT SHOULD BE ONLY FOUR CORE/ SINGLE CORE CABLE WITH PROPER SIZE. CABLE TERMINATION TO BE DONE PROPERLY AND SLEEVES TO BE PROVIDED

3. PANEL AND DOOR EARTHING TO BE CONNECTED 4. BREAKER AND PHASE FAILURE CONTACTOR

TAGGING TO BE DONE 5. PANEL DIAGRAM TO BE PROVIDED 6. CABLE GLANDS TO BE PROVIDED

PHASE FAILURE PANEL 7. MAIN INCOMING PANEL SHOULD

INCORPORATE WITH PHASE FAILURE AND EARTH LEACKAGE PROTECTION.

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MANUAL CHANGE OVER PANEL

1. CABLES TO BE ARRANGED PROPERLY BY INSTALLAING VERTICAL CABLE TRAYS .

2. INCOMING AND OUTGOING CABLES NEEDS TAGGING.

3. CABLE GLANDS AND SLEEVES TO BE PROVIDED AT INCOMING AND OUTGOING OF PANEL TO PROTECT FROM CABLE DAMAGE AND EXTRA HOLES TO BE COVERED

4. PANEL NEED TO EARTHED AND TAG PROPERLY

5. PANEL SHOULD BE PROVIDED WITH KEY OR PAD LOCK FOR SAFETY

6. PANEL NEED TO BE REPAINTED

MANUAL CHANGE OVER PANEL

7. RED , YELLOW ,BLUE SLEEVES TO BE

PROVIDED FOR PROPER INDICATION OF PHASE

8. PANEL DRAWING TO BE PROVIDED 9. PROPER CLEANING TO BE DONE

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SAMPLE RECOMMENDATION

CABLE TRAY , CABLES PANEL WITH TAGGING

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AUTO TRANSFER SWITCH PANEL 1. BREAKERS AND CONTACTOR

TAGGING TO BE DONE 2. EARTHING BAR TO BE PROVIDED

AND PANEL EARTHING TO BE DONE 3. PANEL DRAWING TO BE PROVIDED

AUTO TRANSFER SWITCH PANEL

4. CABLE GLANDS AND SLEEVES TO BE PROVIDED FOR THE INCOMING AND OUTGOING CABLES

5. PANEL SHOULD BE TOTALLY CLOSED 6. INCOMING AND OUT GOING CABLES SHOULD BE PROVIDED

WITH TAGGING AND SIZE

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GENERATOR BATTERY CHARGER

1. GENERATOR BATTERY CHARGING CABLE TO BE INSIDE GI CONDUIT OR IT SHOULD BE FIRE RATED AND CHARGER SHOULD BE INSIDE BOX. IT SHOULD NOT BE VISIBLE

SUBSTATION TRENCH

1. CABLES NEED TO BE ARRANGED PROPERLY WITH CABLE TRAYS

2. TRENCH COVERS SHOULD NOT OF CARD BOARD OR THERMOCOLE AS IT COULD EASILY BREAK. WE PREFER TO BE STEEL COVER WITH HANDLES AS SHOWN

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SUBSTATION OUTGOING BREAKERS TO WARE HOUSES

1. PANEL NAME TAGGING TO BE PROVIDED AS ITS MISSING

2. BREAKERS TAGGING TO BE PROVIDED WITH OUTGOING INFORMATION AND CABLE SIZE.

3. LOAD DISTRIBUTION SCHEDULE TO BE PROVIDED

4. PANEL SHOULD HAVE INSPECTION STICKER LIKE QC PASSED

5. PANEL MAIN BREAKER TO BE PROVIDED IN THE SAME PANEL AS AT PRESENT ITS IN PHASE FAILURE PANEL

6. OUTGOING BURRIED CABLES DRAWING ROUTE TO BE PROVIDED SEPARATE AS NO DETAILS PROVIDED

SUBSTATION PANEL DISTRIBUTION SIDE

7. SPARE CABLES TO BE REMOVED AND CABLES ENDS TO BE PROVIDED WITH END CAPS

8. TRENCH AND CABLES TO BE PROPERLY TAGGED, CLEANED AND ARRANGED

9. EARTH LEAKAGE PROTECTION DEVICE TO BE INSTALLED

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RECOMMENDATION FOR SUBSTATION EARTHING

1. ALL FOUR WARE HOUSE BUILDINGS AND SUBSTATION SHOULD HAVE SEPARATE EARTH WITH TAGGING AS THEY ARE SEPARATE BUILDINGS . AT PRESENT ALL EARTH CONDUCTORS FROM BUILDINGS ARE CONNECTED TO SUBSTATION BUILDING

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Ware House:

COLD WARE HOUSE 1:

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SUB MAIN DISTRIBUTION BOARD COLD WARE HOUSE 1

1. BREAKERS, CT’S /FUSES TAGGING TO BE PROVIDED

2. LOAD SCHEDULE TO BE PROVIDED

3. PANEL NEED TO BE KEY OR PAD LOCKED

4. TWO CABLE SHOULD NOT BE TERMINATED ON SAME BREAKER

5. FUSE STOPPER TO BE PROVIDED 6. BREAKERS PLATE COVER TO BE

PROVIDED 7. AT PRESENT PANEL DOOR

CAN’T BE LOCKED BECAUSE OF CABLES ARRANGEMENT

8. MAIN BUILDING EARTH TO BE PROVIDED

9. BUS BAR COVER MISSING



11. VOLTMETER AND INDICATION LAMPS NOT WORKING

12. EARTH LEAKAGE PROTECTION DEVICE TO BE PROVIDED

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UNDERVOLTAGE OVERVOLTAGE PANEL BOARD 2

1. INCOMING AND OUTGOING CABLES HAVE NO TAGGING

2. GLANDS SHOULD BE PROVIDED 3. EARTHING SHOULD BE PROVIDED AS

PRESENTLY MISSING 4. CONTACTOR AND RELAY TAGGING SHOULD

BE PROVIDED 5. PANEL NAME SHOULD BE PROVIDED 6. CABLES SHOULD NOT BE EXPOSED . IT

SHOULD BE INSIDE CONDUIT AS ITS WARE HOUSE AREA.

7. PANEL SHOULD BE PROPERLY KEY/PAD LOCKED

8. INNER COVER PLATE TO BE PROVIDED

COLD UNITS DISTRIBUTION BOARD 3 1. INDICATION LAMPS TO BE REPLACED 2. INNER PLATE COVER TO BE PROVIDED 3. BREAKERS TAGGING TO BE DONE 4. BLACK CABLE USED FROM BUS BAR TO

BREAKER. COLOUR CODE TO BE FOLLOWED FOR DISTRIBUTION BOX

5. BREAKER STOPPERS ON DIN RAIL TO BE PROVIDED

6. CABLES SHOULD BE PROPERLY ARRANGED 7. CABLE GLANDS TO BE PROVIDED 8. FIRE ALARM EXPOSED WIRES OUTSIDE DB TO

BE COVERED INSIDE GI CONDUIT 9. LOAD SCHEDULE TO BE PROVIDED 10. EARTH LEAKAGE PROTECTION DEVICE TO BE

PROVIDED

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LIGHTING AND POWER SOCKETS FINAL DISTRIBTION BOARD 4

1. PANEL TO BE CLEANED PROPERLY WEEKELY 2. RCD TO BE INSTALLED SEPARATELY FOR

LIGHTING AND POWER SOCKETS 3. BREAKERS TAGGING TO BE DONE 4. PHASE WIRES, NEUTRAL AND EARTH

TAGGING TO BE DONE WITH CIRCUIT NUMBERS

5. LOAD SCHEDULE TO BE PROVIDED 6. BLACK CABLE USED FOR ALL PHASES. IT

SHOULD BE RED , YELLOW AND BLUE 7. INTERNAL COVER TO BE PROVIDED AS ITS

MISSING 8. BREAKER OUTPUT WIRES TO BE AS PER

PHASE COLOUR. AT PRESENT ITS ALL RED. 9. PANEL DOOR EARTHING TO BE PROVIDED 10. CABLE GLANDS TO BE PROVIDED

LIGHTING AND POWER SOCKETS FINAL DISTRIBTION BOARD 5

1. PANEL TO BE CLEANED PROPERLY 2. CABLES DRESSING TO BE DONE PROPERLY 3. RCD TO BE INSTALLED SEPARATELY FOR




SHOULD BE RED , YELLOW AND BLUE 8. INTERNAL COVER TO BE PROVIDED AS ITS

MISSING 9. BREAKER OUTPUT WIRES TO BE AS PER PHASE

COLOUR. AT PRESENT ITS ALL RED. 10. PANEL DOOR EARTHING TO BE PROVIDED 11. CABLE GLANDS TO BE PROVIDED 12. INDUSTRIAL SOCKET CABLES ARE DIRECTLY

TAKEN FROM 50A BREAKER . THERE SHOULD BE SEPARATE THREE PHASE BREAKER AS ITS RATING IS TOO HIGH

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COLD UNITS DISTRIBUTION BOARD 6 1. DAMAGED INDICATION LAMPS TO BE

REPLACED. 2. INNER PLATE COVER TO BE PROVIDED 3. BLACK CABLE USED FROM BUS BAR TO

BREAKERS . COLOUR CODE TO BE FOLLOWED FOR DISTRIBUTION BOX


5. CABLES SHOULD BE PROPERLY ARRANGED 6. CABLE GLANDS TO BE PROVIDED 7. EXPOSED WIRES OUTSIDE DB TO BE

COVERED PROPERLY 8. LOAD SCHEDULE TO BE PROVIDED

COLD UNITS DISTRIBUTION BOARD 16

1. DISTRIBUTION BOARD NEEDS TO BE CLEANED PROPERLY OR REPLACED AS ITS RUSTED

2. BREAKERS AND CABLES TAGGING TO BE PROVIDED

3. INNER PLATE COVER TO BE PROVIDED 4. CABLES SHOULD BE PROPERLY ARRANGED 5. CABLE GLANDS TO BE PROVIDED 6. EXPOSED WIRES OUTSIDE DB TO BE

COVERED PROPERLY WITH GI CONDUITS OR FIRE RATED CABLES TO BE USED

7. LOAD SCHEDULE TO BE PROVIDED 8. WEATHER PFOOF BOX IP65 RATED TO BE

INSTALLED AS ITS OUTSIDE 9. TWO WIRES SHOULD NOT BE TERMINATED

ON SAME BREAKER AS IN CASE OF ANY FAULT BOTH UNITS GET SHUT DOWN

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OUTSIDE LIGHTS BREAKER

1. PHOTOVOLTIC CELL SHOULD BE PROVIDED FOR AUMATICALLY CONTROLLING THE OUTSIDE LIGHTS INSTEAD OF MANUALLY SWITCHING ON/OFF BREAKER AND WEATHER PROOF MANUAL SWITCH SHOULD BE INSTALLED

2. LED LAMPS SHOULD BE USED FOR ENERGY SAVING

3. WEATHER PROOF IP 65 BOX TO BE INSTALLED AS ITS OUTSIDE. THE PRESENT BOX HAS NO SEALS FOR WEATHER PROTECTION.

WALL MOUNTED COLD UNIT BREAKER BOX’S

1. DB-7,8,9,10,11,12,13 PANEL DOOR CAN’T BE CLOSED AS CABLES ARE TERMINATED INCORRECTLY

2. CABLES TO BE ARRANGED PROPERLY WITH CLIPS 3. TWO UNITS SHOULD NOT BE CONNECTED TO SAME BREAKER.

THERE SHOULD BE SEPARATE BREAKERS FOR EACH UNIT. 4. ALL EXPOSED CABLES TO BE INSIDE GI CONDUILTS OR FIRE RATED

CABLES TO BE USED

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OUTGOING CABLE TO COLD UNITS

1. PROPER CLEANING TO BE DONE ABOVE COLD UNITS AND EXPOSED WIRES TO BE INSIDE GI CONDUITS

2. ALL EXPOSED CONDUITS SHOULD BE GI INSTEAD OF PVC. PVC ARE ONLY USED INSIDE WALLS

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COLD WARE HOUSE 2:

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SELECTOR SWITCH MISSING FOR AMPERE METER


1. BREAKERS TAGGING TO BE PROVIDED 2. LOAD SCHEDULE TO BE PROVIDED 3. PANEL NEED TO BE KEY OR PAD LOCKED 4. TWO CABLE SHOULD NOT BE TERMINATED

ON SAME BREAKER. THERE SHOULD BE SEPARATE BREAKER.

5. BREAKER AND FUSE STOPPER TO BE PROVIDED

6. 10A BREAKER FOR TWO EXHAUST FANS SHOULD NOT BE HANGING LOSE INSIDE PANEL. IT SHOULD BE INSTALLED ON RAIL

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7. BREAKERS PLATE COVER TO BE PROVIDED 8. AT PRESENT PANEL DOOR CAN’T BE

LOCKED BECAUSE OF CABLES ARRANGEMENT

9. MAIN BUILDING EARTH TO BE PROVIDED 10. NO LUGS PROVIDED FOR 75A BREAKER IN

SMDB 1 11. NO GLANDS AND SLEEVES PROVIDED FOR

SMDB 1 12. PANEL NAME PLATE TO BE PROVIDED 13. RCD TO BE PROVIDED FOR EARTH

LEACKAGE PROTECTION

UNDERVOLTAGE OVERVOLTAGE PANEL BOARD 2

1. INCOMING AND OUTGOING CABLES HAVE NO TAGGING

2. GLANDS SHOULD BE PROVIDED 3. EARTHING SHOULD BE PROVIDED AS PRESENTLY

MISSING 4. CONTACTOR AND RELAY TAGGING SHOULD BE

PROVIDED 5. PANEL NAME SHOULD BE PROVIDED 6. CABLES SHOULD NOT BE EXPOSED . IT SHOULD BE

INSIDE CONDUIT AS ITS WARE HOUSE AREA. 7. PANEL SHOULD BE PROPERLY KEY/PAD LOCKED 8. INNER COVER PLATE IS MISSING

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RECOMMENDATION FOR DISTRIBUTION BOARD

1. LIGHTING AND POWER SOCKETS SHOULD HAVE SEPARATE DISTRIBUTION BREAKERS . AT PRESENT SINGLE BREAKER IS USED BOTH FOR LIGHTING AND POWER SOCKETS.

2. RESIDUAL CURRENT DEVICE (RESIDUAL CURRENT CIRCUIT BREAKER) TO BE INSTALLED FOR LIGHTING AND SOCKETS

COLD UNITS DISTRIBUTION BOARD 3 1. INNER COVER TO BE PROVIDED 2. BLACK CABLE USED . COLOUR CODE TO BE

FOLLOWED FOR DISTRIBUTION BOX 3. BREAKER STOPPERS ON DIN RAIL TO BE

PROVIDED 4. CABLES SHOULD BE PROPERLY ARRANGED 5. CABLE GLANDS TO BE PROVIDED 6. EXPOSED WIRES OUTSIDE DB TO BE INSIDE

GI CONDUITS OR FIRE RATED CABLE TO BE USED

7. 32A BREAKERS EARTH CABLE SHOULD BE TERMINATED TO EARTH BAR SEPARATELY

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COLD UNITS DISTRIBUTION BOARD 3 8. RCD TO BE PROVIDED FOR EARTH LEACKAGE

PROTECTION

LIGHTING AND POWER SOCKETS FINAL DISTRIBUTION BOARD 4

1. RCD TO BE INSTALLED SEPARATELY FOR LIGHTING AND POWER SOCKETS

2. BREAKERS TAGGING TO BE DONE 3. PHASE WIRES, NEUTRAL AND

EARTH TAGGING TO BE DONE WITH CIRCUIT NUMBERS


5. BLACK CABLE USED FOR ALL PHASED. IT SHOULD BE RED , YELLOW AND BLUE

6. INTERNAL COVER TO BE PROVIDED AS ITS MISSING

7. BREAKER OUTPUT WIRES TO BE AS PER PHASE COLOUR. AT PRESENT ITS ALL RED.

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8. WIRES TO INDICATION LAMPS

TO BE FIXED WITH CLIPS 9. CONDUITS SHOULD NOT BE

VISIBLE. GLANDS TO BE PROVIDED FOR PROPER FIXING THE CONDUITS



2. BREAKERS TAGGING TO BE DONE 3. PHASE WIRES, NEUTRAL AND EARTH

TAGGING TO BE DONE WITH CIRCUIT NUMBERS AS MENTIONED IN RECOMMENDATIONS

4. LOAD SCHEDULE TO BE PROVIDED 5. CABLE DRESSING TO BE DONE OK .BLACK

CABLE USED FOR ALL PHASED. IT SHOULD BE RED , YELLOW AND BLUE

6. INTERNAL COVER TO BE PROVIDED AS ITS MISSING

7. BREAKER OUTPUT WIRES TO BE AS PER PHASE COLOUR. AT PRESENT ITS ALL RED.

8. CONDUITS SHOULD NOT BE VISIBLE. GLANDS TO BE PROVIDED FOR PROPER FIXING THE CONDUITS

9. WIRES TO INDICATION LAMPS TO BE FIXED WITH CLIPS

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COLD UNITS DISTRIBUTION BOARD 6 1. INNER PLATE COVER TO BE PROVIDED 2. BLACK CABLE USED FROM BUS BAR TO



4. CABLES SHOULD BE PROPERLY ARRANGED 5. CABLE GLANDS TO BE PROVIDED 6. EXPOSED WIRES OUTSIDE DB TO BE

COVERED PROPERLY 7. MAIN BREAKER AT PRESENT IS OF 100A

HOWEVER AT THE SUBMAIN DISTRIBUTION BOARD ITS 75A. THIS IS AGAINST THE SYSTEM PROTECTION SCHEME

8. LOAD SCHEDULE TO BE PROVIDED 9. EARTH LEAKAGE PROTECTION DEVICE TO

BE PROVIDED

COLD WAREHOUSE 2 DISTRIBUTION BOARD 6

10. CONDUITS SHOULD NOT BE VISIBLE. THERE SHOULD BE GLANDS PROVIDED AT THE END OF CONDUITS

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RECOMMENDATION FOR EARTH LEAKAGE PROTECTION

RCD 100mA

RCD 30mA

WARE HOUSE 2 COLD STORAGE

1. EXHAUST FANS SWITCH TO BE INSTALLED AT 140MM HEIGHT FROM FURNISHED FLOOR LEVEL FROM GROUND

2. EXHAUST FANS SWITCH FOR OUT SIDE FANS TO BE PROVIDED AS PRESENTLY ITS DIRECTLY CONNECTED TO BREAKER

3. GI CONDUIT TO BE INSTALLED . PVC CONDUIT IS NOT ACCEPTABLE AS ITS FIRE ZONE OR FIRE RATED CABLE TO BE USED

4. EXHAUST FANS SHOULD BE INTERLOCKED WITH FIRE ALARM AS PER NFPA 72. SO THAT IN CASE OF FIRE SMOKE SHOULD NOT BE ACCUMULATED INSIDE WARE HOUSE

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3. WEATHER PROOF BOX IP65 RATED TO BE USED AS ITS OUTSIDE

WALL MOUNTED COLD UNIT BREAKER BOX

1. MISSING PLATE COVERS TO BE PROVIDED FOR DB-8 AND DB-9

2. ALL EXPOSED CABLES TO BE INSIDE GI CONDUITS AND WIRE TERMINATION SHOULD NOT FROM OUTSIDE AS PANEL DOOR CAN NOT BE CLOSED

3. CABLES NEED TO BE PROPERLY ARRANGED PROPERLY INSIDE ALL BOXES

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WALL MOUNTED COLD UNIT BREAKER BOX

4. ALL CABLES NEED TO BE PROPERLY ARRANGED WITH CLIPS INSIDE WALL MOUNTED COLD UNIT BREAKER

OUTGOING CABLE TO COLD UNITS

1. PROPER CLEANING TO BE DONE ABOVE COLD UNITS AND EXPOSED WIRES TO BE INSIDE GI CONDUITS

2. ALL EXPOSED CONDUITS SHOULD BE GI INSTEAD OF PVC. PVC ARE ONLY USED INSIDE WALLS

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COLD WARE HOUSE TEMPERATURE

MONITORING STATION:

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OUTSIDE WARE HOUSES TEMPERATURE MONITORING PANELS

1. PANELS PLATE TO BE PROVIDED FOR IDENTIFYING WARE HOUSES DATA

2. TEMPERATURE SENSOR WIRES INSIDE WARE HOUSE SHOULD BE PROTECTED WITH GI CONDUIT AS EXPOSED WIRES ARE NOT ACCEPTABLE

RECOMMENDATION FOR AUTO DIALLER (OPTIONAL)

1. AUTO DIALLERS TO BE USED INCASE THE TEMPERATURE OF ANY FREEZER OR COLD ROOM GOES ABOVE LIMIT. IT WOULD AUTOMATICALLY DIAL ON THE MOBILE NO. OF LAB INCHARGE SO THAT HE CAN CHECK THE REQUIRED FREEZER OR COLD ROOM

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DRY WARE HOUSE 1:

46

SUB MAIN DISTRIBUTION BOARD 1 1. CT’S TO BE PROVIDED FOR LOAD

MEASUREMENT 2. BREAKERS TAGGING TO BE PROVIDED 3. LOAD SCHEDULE TO BE PROVIDED 4. PANEL NEED TO BE KEY OR PAD LOCKED 5. FUSE STOPPER TO BE PROVIDED 6. BREAKERS PLATE COVER TO BE PROVIDED 7. INNER PLATE COVER TO BE PROVIDED 8. CABLES COLOUR CODE TO BE FOLLOWED 9. MAIN BUILDING EARTH TO BE PROVIDED 10. INDICATION LAMPS NOT WORKING

LIGHTING AND POWER DISTRIBUTION BOARD 2

1. CABLES DRESSING & ARRANGEMENT TO BE DONE PROPERLY


3. BREAKERS TAGGING TO BE DONE 4. PHASE WIRES, NEUTRAL AND EARTH TAGGING

TO BE DONE WITH CIRCUIT NUMBERS 5. LOAD SCHEDULE TO BE PROVIDED 6. BLACK CABLE USED FOR ALL PHASES. IT

SHOULD BE RED , YELLOW AND BLUE 7. INTERNAL COVER AVAILABLE ONSITE BUT

REMOVED. 8. BREAKER OUTPUT WIRES TO BE AS PER PHASE

COLOUR. AT PRESENT ITS ALL RED. 9. CABLE GLANDS TO BE PROVIDED 10. LIGHTS BREAKER TRIPPING DUE TO OVERLOAD 11. AC UNIT NOT WORKING. SUPPLY NEEDS TO BE

CHECKED

47

SPARE DISTRIBUTION BOARD 3

1. INNER PLATE COVER TO BE PROVIDED 2. BLACK CABLE USED FROM BUS BAR TO


3. BREAKER/FUSE STOPPERS ON DIN RAIL TO BE PROVIDED AS THE FUSE IS LOSE

4. CABLES SHOULD BE PROPERLY ARRANGED 5. CABLE GLANDS TO BE PROVIDED 6. BREAKERS TAGGING AND PANEL NAME

PLATE TO BE PROVIDED 7. LOAD SCHEDULE TO BE PROVIDED

SPARE DISTRIBUTION BOARD 4 1. ALL INDICATION LAMPS DAMAGED 2. INNER PLATE COVER TO BE PROVIDED

3. BLACK CABLE USED FROM BUS BAR TO BREAKERS . COLOUR CODE TO BE FOLLOWED FOR DISTRIBUTION BOX


5. CABLES SHOULD BE PROPERLY ARRANGED 6. CABLE GLANDS TO BE PROVIDED 7. LOAD SCHEDULE TO BE PROVIDED

48

LIGHTING AND POWER DISTRIBUTION BOARD 5

1. INDICATION LAMPS TO BE REPLACED 2. CABLES DRESSING & ARRANGEMENT TO BE

DONE PROPERLY 3. RCD TO BE INSTALLED SEPARATELY FOR

LIGHTING AND POWER SOCKETS 4. BREAKERS TAGGING TO BE DONE 5. PHASE WIRES, NEUTRAL AND EARTH TAGGING

TO BE DONE WITH CIRCUIT NUMBERS 6. LOAD SCHEDULE TO BE PROVIDED 7. BLACK CABLE USED FOR ALL PHASES. IT


REMOVED. 9. BREAKER OUTPUT WIRES TO BE AS PER PHASE

COLOUR. AT PRESENT ITS ALL RED. 10. PANEL DOOR EARTHING TO BE PROVIDED 11. CABLE GLANDS TO BE PROVIDED 12. LIGHTS BREAKER IS TRIPPING DUE TO

OVERLOAD

TAGGING RECOMMENDATIONS FOR SWITCHES,EARTH AND NEUTRAL

49




3. WEATHER PROOF BOX IP65 RATED TO BE INSTALLED.AT PRESENT ITS JEOPARDIZING THE SAFETY STANDARD

CONDUCTOR COLOUR CODE RECOMMENDATIONS

50

DRY WARE HOUSE 2:

51

SUB MAIN DISTRIBUTION BOARD 1

1. CT’S TO BE PROVIDED FOR LOAD MEASUREMENT AS PRESENTLY ITS NOT AVAILABLE

2. BREAKERS TAGGING TO BE PROVIDED 3. LOAD SCHEDULE TO BE PROVIDED 4. PANEL NEED TO BE KEY OR PAD LOCKED 5. FUSE STOPPER TO BE PROVIDED 6. BREAKERS PLATE COVER TO BE PROVIDED 7. INNER PLATE COVER TO BE PROVIDED 8. MAIN BUILDING EARTH TO BE PROVIDED 9. CABLE GLANDS TO BE PROVIDED

SUB MAIN DISTRIBUTION BOARD 1

10. LUGS ARE NOT AS PER SIZE FOR FIRST AND SECOND BREAKER

52

SPARE DISTRIBUTION BOARD 2

1. INNER PLATE COVER TO BE PROVIDED 2. BLACK CABLE USED FROM BUS BAR TO

BREAKERS . COLOUR CODE TO BE FOLLOWED FOR DISTRIBUTION BOARD


4. CABLES SHOULD BE PROPERLY ARRANGED 5. CABLE GLANDS TO BE PROVIDED 6. EXPOSED WIRES OF INDUSTRIAL SOCKET

OUTSIDE DB TO BE COVERED PROPERLY 7. LUGS NOT AS PER SIZE 8. FIRE ALARM PANEL SEPARATE BREAKER TO

BE PROVIDED 9. LOAD SCHEDULE TO BE PROVIDED


1. CABLES DRESSING & ARRANGEMENT TO BE DONE PROPERLY


3. BREAKERS TAGGING TO BE DONE 4. PHASE WIRES, NEUTRAL AND EARTH




REMOVED. 8. BREAKER OUTPUT WIRES TO BE AS PER

PHASE COLOUR. AT PRESENT ITS ALL RED. 9. PANEL DOOR EARTHING TO BE PROVIDED 10. CABLE GLANDS TO BE PROVIDED 11. PANEL NAME PLATE TO BE PROVIDED

53


1. YELLOW INDICATION LAMP TO BE PROVIDED

2. PANEL TO BE CLEANED PROPERLY 3. CABLES DRESSING & ARRANGEMENT TO BE

DONE PROPERLY 4. RCD TO BE INSTALLED SEPARATELY FOR





REMOVED. 10. BREAKER OUTPUT WIRES TO BE AS PER

PHASE COLOUR. AT PRESENT ITS ALL RED. 11. CABLE GLANDS TO BE PROVIDED

54


12. TWO CABLES SHOULD BE TERMINATED ON SAME BREAKER AS ITS VIOLATION OF STANDARDS.

13. 2 NUMBER DAMAGED EXHAUST FANS TO BE REPLACED

55

DRY WARE HOUSE 2 DISTRIBUTION BOARD 5

1. PANEL NAME PLATE TO BE PROVIDED

2. BREAKER TAGGING TO BE PROVIDED


4. PANEL CLEANING TO BE DONE 5. INNER COVER PLATE TO BE

FIXED PROPERLY 6. SINGLE PHASE BREAKER

SHOULD NOT BE HUNG LOSE


7. COLOUR CODE NOT FOLLOWED. BLACK CABLE USED FROM BUS BAR TO BREAKER.

8. COLOUR CODE NOT FOLLOWED . WHITE CABLE USED FROM BREAKER TO BREAKER

9. CABLES SHOULD BE WIRED FROM BUS BAR TO BREAKER INSTEAD OF BREAKER TO BREAKER

10. WIRES SHOULD BE ARRANGED PROPERLY

56


11. INSULATION TAPE SHOULD NOT BE USED FOR CABLE ARRANGEMENT


FIRST LEVEL LIGHTING AND POWER SOCKETS FINAL DISTRIBUTION BOARD 6 1. RCD TO BE INSTALLED SEPARATELY FOR




SHOULD BE RED , YELLOW AND BLUE 6. BREAKER OUTPUT WIRES TO BE AS PER

PHASE COLOUR. AT PRESENT ITS ALL RED. 7. PANEL DOOR EARTHING TO BE PROVIDED 8. CABLE GLANDS TO BE PROVIDED 9. PANEL NAME PLATE TO BE PROVIDED 10. INNER COVER PLATE IS MISSING

57

OUTSIDE LIGHTS BREAKER 1. OUTSIDE LIGHTS NOT WORKING 2. PHOTOVOLTIC CELL SHOULD BE

PROVIDED FOR AUMATICALLY CONTROLLING THE OUTSIDE LIGHTS INSTEAD OF MANUALLY SWITCHING ON/OFF BREAKER AND WEATHER PROOF MANUAL SWITCH SHOULD BE INSTALLED.


4. WEATHER PROOF BOX IP65 RATED TO BE USED AS ITS OUTSIDE

5. TERMINATION IS NOT OK AS INSULATION SHOULD NOT BE VISIBLE

58

Fire Alarm System:

59

FIRE ALARM SYSTEM DRY WARE HOUSE

1. FIRE ALARM CABLES TO BE INSIDE GI CONDUITS

2. FIRE ALARM SYSTEM IS NOT OPERATIONAL IN DRY WARE AND COLD WARE HOUSE AS

ITS SOUNDING SO SWITCHED OFF BY OPERATORS. FIRE ALARM PANEL SHOULD BE ALWAYS FUNCTIONAL. SWITCHING IT OFF IS

VIOLATION OF STANDARDS .SMOKE DETECTORS AND MANUAL CALL POINTS

NEED TO BE CHECKED AS ALARMS ARE COMING AND NEEDED TO BE RECTIFIED.

3. IN DRY WARE HOUSE ALL EXHAUST FANS

ARE DAMAGED AND NOT WORKING. EXHAUST FANS SHOULD BE INTERLOCKED

WITH FIRE ALARM SO THAT INCASE OF FIRE ALL THE SMOKE SHOULD BE EXTRACTED OUT

4. SPARES OF SMOKE DETECTORS AND MANUAL CALL POINTS TO BE MAINTAINED

FIRE ALARM COLD WARE HOUSE 1

1. FIRE ALARM CABLES TO BE INSIDE GI CONDUITS WHICH ARE EXPOSED

2. POWER CABLE SHOULD NOT BE EXPOSED OUTSIDE

3. EXHAUST FANS SHOULD BE INTERLOCKED WITH FIRE ALARM AS PER NFPA 72 SO THAT IN CASE OF FIRE SMOKE SHOULD NOT BE ACCUMULATED INSIDE WARE HOUSE

60

FIRE ALARM SYSTEM COLD AND DRY WARE HOUSE

1. TAGGING FOR FIRE BELL ,SMOKE DETECTORS TO BE DONE FOR MAINTENANCE AND PROGRAMMING PURPOSE

61

CLOSED CIRCUIT TV (CCTV)

SYSTEM:

62

CLOSED CIRCUIT TV (CCTV) SYSTEM

CONDUIT T-JOINT TO BE PROVIDED FOR POWER AND CCTV AT ROOF TOP. CABLES SHOULD NOT BE EXPOSED TO DIRECT SUNLIGHT

CLOSED CIRCUIT TV (CCTV) SYSTEM

JUNCTION BOX TO BE PROVIDED FOR CAMERA EQUIPMENTS INSTEAD OF VHANGING EQUIPMENTS ON WALL

63

Exit Guide Boards:

64

EXIT GUIDE BOARDS WIRING

EXIT GUIDE BOARD WIRING TO BE INSIDE GI CONDUITS. IT SHOULD NOT BE EXPOSED .

EXIT GUIDE BOARDS WIRES DRY AND COLD WARE HOUSE

1. EXIT GUIDE POWER SUPPLY ARE PLACED LOSE ON GROUND. THE CABLE AND POWER SUPPLY SHOULD BE INSIDE CONDUIT WITH A SEPARATE JUNCTION BOX AND BREAKER.

65

RECOMMENDATIONS FOR PANEL

BOARDS:

66

RECOMMENDATIONS FOR PANEL LAYOUT

67

RECOMMENDATION FOR TAGGING OF CIRCUIT WIRES AND RCD’S

68

RECOMMENDATION FOR CIRCUIT NO

69

RECOMMENDATIONS FOR WIRING DESIGN

70

RECOMMENDATIONS FOR EMERGENCY SHUTDOWN SWITCH

/ISOLATOR ALL COLD ROOM TO BE PROVIDED WITH OUTDOOR SHUTDOWN SWITCH . AT PRESENT CR-05, 08,09,31,29,30,28 AND FZ-07 HAVE NO EMERGENCY SHUTDOWN SWITCH/ ISOLATER

LIGHTING CONTROL SYSTEM FOR DRY AND COLD WARE HOUSES

1. OPTIONAL LIGHTING OCCUPANCY SENSORS WITH CONTROL SYSTEM SHOULD BE INSTALLED AND SHOULD BE INTEGRATED TO EXISTING LIGHTING SYSTEM FOR SAVING ELECTRICITY. THIS WOULD SENSE THE MOVEMENT INSIDE WARE HOUSES AND SWITCH ON/OFF THE LIGHTS AS PER REQUIREMENT.

71

RECOMMENDATION FOR EXHAUST FAN WITH DUCTS

1. EACH UNIT SHOULD BE INSTALLED WITH EXHAUST DUCT TO REMOVE HEAT GENERATED BY COLD UNITS

72

MAINTENANCE SCHEDULE

1. SPARE PARTS TO BE MAINTAINED FOR CONTACTORS , BREAKERS , COLD UNITS REFRIGERATS AND ACCESSORIES

2. INSPECTIONS TO BE DONE AS PER ATTACHED SCHEDULE 3. CAT GENERATOR MAINTENANCE SCHEDULE PROVIDED SEPARATELY 4. CAT GENERATOR DAILY MAINTENANCE SCHEDULE PROVIDED SEPARATELY

.

73

74

75

76

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7. Standards followed:

Low Voltage Switchgear and Switchboards:

Summary:

This annexure includes survey of following equipment according to the international standards

listed below:

1. Main Low Tension Panel.

2. Main and Sub-main Switchboards.

3. Automatic transfer switches

Reference International Standards:

1. IEC 61439-1

LV Switchgear & Control Gear Assemblies-- General rules

2. IEC 61439-2

LV Switchgear & Control Gear Assemblies - Power Switchgear and Control gear Assemblies

3. IEC 60947-1

LV Switchgear & Control Gear - General rules

4. IEC 60947-2

Circuit breakers

5. IEC 60898

Circuit breakers for over current protection (MCB)

12. IEC 60947-4

Contactors and motor starters(1 to 3 parts)

13. IEC60947-5

Control circuit devices and Switching elements (1 to 9 parts)

14. IEC 60947-6

Multiple function equipment - Transfer (1 to 2 parts) Switching, Control & protective switching

devices

15. IEC 60068

Environmental Testing

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Reference for Best international Practice:

Electricity Wiring Regulations (Third Edition) The Regulation and Supervision Bureau for the

water, wastewater and electricity sector in the Emirate of Abu Dhabi (UAE).

General Observation:

General:

1. Generator maintenance logging form should be maintained. Generator spares, fuel filling

system to be provided

2. Distribution Board for substation should be installed.

3. Work Shop for testing should be separate. Substation should not be used for testing and

maintenance works.

4. The main low tension switch boards should be dust and vermin protected, front operated

and of clean appearance.

5. The switch boards should be made of folded EGI (Electro galvanized iron), also the

switchboard should be rust proof and epoxy polyester painted.

6. Enclosure should have removable rear cover panels to allow access to rear interior of

switchgear.

7. All exposed bolts or screw heads should be chrome or cadmium plated.

8. All doors and removable covers or plates should be provided with suitable neoprene

gaskets to prevent the ingress of dust, vermin and insects.

9. The switch boards should be of IP 54 construction in accordance with IEC 60529

switchboards.

10. The section construction should be so designed that sheet steel barriers shall be

provided between each vertical sections, breaker compartments, and control and power

compartments. Each compartment sheet walls should provide protection against direct

contacts with live parts and guarantee a degree of protection IP2X. The sections should

be of modular construction with its functional unit having its own door, mounting plates,

side partitions and horizontal partitions.

11. Adequate cable ways shall be provided in the switch board accessible by hinged lids or

removable covers.

12. Faulty indicating instruments should be replaced by new ones.

13. Gland plate for compartment with single core cable shall be made of aluminum. (To

avoid eddy currents)

14. All low-voltage switchboards must be a Type Tested Assembly (TTA), compliant with

IEC 61439· 1 and 2. The switchboard type-test certificates shall be originated by a

worldwide known third-party certification organization such as ASEFA ASTA or KEMA.

15. The switchboard should have the capability to withstand seismic conditions. The seismic

test should be done in compliance with the UBC (Uniform Building Code) and CBC

(California Building Code) regulations.

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Bus bars:

1. All phase and neutral bus bars should extend throughout the length of the board with

the same cross section area. The currently installed bus bars comply with this

standard.

2. Bus bars should be housed in separate airtight compartment which should not

contain any wiring or apparatus other than that required for connection to bus bars.

Access to bus bars and bus bar connections should be gained only by removal of

covers secured by bolts or studs and internal shrouding plates at all sides. Bus

links/feeder links should be color coded for phase and neutral identification.

Circuit and Connections:

1. All outgoing circuits should have separate compartment and/or be screened so that

equipment for anyone circuit can be maintained without risk of contact with lives

connections on any other circuit.

2. All feeders should be provided with cable lugs and brass cable glands.

3. All wiring should be identified using ferrules at both ends.

4. Main Switch Board / Main Distribution Boards should be provided with Ammeters,

voltmeter and status indication lamps for phases.

Main and Sub main Switch boards:

1. The main and sub-main switch boards should be totally enclosed, dust protected and

factory fabricated suitable for operation on 415/240 V, 3 Phase, 4 wire, 50 Hz supply.

2. The main isolator should be a triple pole and neutral molded case circuit breaker with or

without tripping element conforming to IEC 61947.

3. The earth bus should have adequate rating and length for connecting the incoming and

outgoing earth wires or tapes.

4. High conductivity copper bars or rods covered by colored PVC sleeve or painted for

phase identification should be employed for all connections of 100A and higher. For

smaller connections suitable PVC insulated cables to B.S. 6231 should be used with

colored insulation for phase identification. However, currently there are no specifically

mentioned / labeled phases.

5. The arrangement of the boards should be such that the main isolator and MCCBs can

be operated when the door is open but to gain access to the MCCBs, cabling and

terminations a second cover should be removed. Adequate clearance should be

maintained between phases and there should be no crowding of wires in close proximity

of metal.

6. The boards should have cable glands for convenient terminations of incoming and

outgoing cables. However, cable glands were installed in some boards but were absent

in most of them.

M.C.B Distribution Boards:

1. MCB distribution boards should comprise of a totally enclosed dust and vermin protected

conforming to IP41 as per IEC 60529.

2. The circuit breakers should provide earth leakage protection for the lighting and power

sections.

80

3. The wiring between the circuit breakers and bus bars should be carried out with colored

suitably rated PVC insulated cables with copper conductors for phase identification.

Adequate clearance should be maintained between phase and non-current carrying

metals. Terminals should be so located that in the final connected positions there should

be no crowding of wires in close proximity of live metals.

4. Cable glands should be provided in every distribution board.

5. The MCB shall have thermal overload trip to accept 5% overload and to trip at 30% of

rated current as per IEC 60947-2.

6. Out goers on the MCB Distribution boards should be identified by labels affixed on front

of the board. Aligned with each device, Access to the inside of the enclosure for

maintenance purposes should be possible by removing the inner dead front/ cover.

7. The terminals of all components should be of the tunnel type (IP 20) in order to minimize

the risk of direct contact.

8. For cable running in the enclosure. Adequate clearance should be available on either

side of the outgoing breakers (gutter space).

9. All outgoing circuits including neutrals and earth should be labeled with labels/ferrules.

Properly segregate, support and label all cabling within the panels.

10. All boards should have waterproof gasket and circuit protective conductors between the

covers and the boards.

Contactors:

1. Contactors located within the boards do not require a separate enclosure but the

construction of the contactor should be such that it is not possible to come into contact

with live parts conforming to IP2X both on power and control circuit connections. The

already installed system has contactors according to required standards.

Power Supply Cables:


1. BS 6004: “Specification for PVC-Insulated Cables (non- armored) for + IEC 227 Electric

Power and Lighting”.

2. BS 6346: “Specification for PVC-Insulated Cables for Electricity Supply”.

3. BS 7671: “Requirements for Electrical Installations”.

General Observations:

1. They should be neatly fixed in straight lines. On cable trays, cables should be fixed by

cable clips and or on angle supports inside formed trenches. The spacing of cable

supports should be as indicated in the latest IEEE regulations. Cables on cable tray

when run exposed to open atmospheric condition should be covered with canopy on

cable tray.

2. Cables should be continuous from outlet to outlet and no joints should be made except

within outlet or junction boxes.

81

3. Each cable shall be labeled at both termination points and in each junction box, terminal

box and cabinet through which it passes.

4. All cables shall be so arranged and fixed that any one of the cables may be removed

without disturbance of the remainder.

5. The crossing over of cables on the same tray or in the same trench should be avoided

as far as possible. All unnecessary bends should be straightened after lying.

Cable in Conduits:

1. Cables should be installed without joints, all connections being made at switch positions,

lighting points, ceiling roses, etc.

2. Cables should be installed without kinks.

3. Cables forming sub-circuits connected to different distribution boards should not be run

in the same trenching or conduit.

4. Single phase final circuits should have phase wires colored red and neutral wires

colored black. The earth conductor should be green/yellow striped.

Conduits:


1. BS 4607: “Part 1 - Non-Metallic Conduits and Fittings for Electrical Installations: Rigid

PVC conduits and Fittings Metric Units”.

2. BS 4662: “Specification for Boxes for the Enclosure of Electrical Accessories”.

3. BS 6053: “Conduit Diameter and Threads for Conduit and Fittings” + IEC 423A

4. BS 6099: “Conduits for Electrical Installations”.

5. BS 7671: “Requirements for Electrical Installations”.


1. The pipes should be corrosion resistant and unaffected by water, oxidizing agents,

aggressive soils, and sand fungi growth, bacterial and electrolytic action. Contrary to

this, currently most of the pipes have corrosion and joints of wire are exposed through

these pipes which can prove fatal in case of emergency.

2. For future expansion in electrical system, Conduits shall be in accordance with BS 6099

Heavy Gauge (standard) and conduit fittings shall be in accordance with B.S. 4607 and

CEE Publication 26. The conduits and fittings shall be suitable for installation at

temperature -5 to +85° C and they shall not soften or suffer any degradation at these

temperatures. Conduits and fittings shall be of the self-extinguishing type.

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Lightning Protection:


1. BS EN62305 (I-IV): 2006 - Standard for Lightning Protection

2. BS EN50164-1:2000: Lightning Protection Components

3. BS EN50164-2:2000: Part 2 - Requirements for Conductors and Earth Electrodes.


1. Materials used in the manufacture of the lightning protection system components should

comply with BS EN 50164. No combination of materials should be used to form an

electrolytic couple causing corrosion in the presence of moisture unless moisture is

permanently excluded from the junction of such materials. Where unusual conditions

exist which would cause corrosion of conductors, suitable protective coatings should be

used. Where mechanical hazard is involved, suitable protection should be provided by

enclosing or covering conductors in PVC conduits or other non-magnetic material.

2. Lightning protection system should be as per BS EN 62305 using copper conductors

and consisting of an air termination network, down conductors, test clamps, earth

termination and all other fixing materials and accessories.

3. Bond all exposed metalwork on the roof structure to form part of the air termination

network.

Grounding and Bonding:


1. The grounding and bonding system should be installed and it should include:

I. Earth Pits

II Earth Electrodes

III Copper Tape

IV Accessories

2. Generally, all non-current-carrying, metal components of the electrical installation and of

power-consuming equipment shall be connected to the earthing system.

3. The main earth bars shall be constructed of high conductivity copper, tape of size 25 x

3mm (minimum) to BS 1432.

4. The cross sectional area of protective conductors shall be in accordance with the

relevant IEC and BSI standards.

5. All earth continuity conductors should terminate finally at the building main switchboard

earth bus and extended from there to earth electrodes.

6. The earthing system of the building should be an independent system connected to the

earth bus on the main low tension switchboard. The neutral shall not be used for

earthing and shall be connected to the earth only at the main low tension switchboard.

7. The conduit system should be considered as continuous for earthing purposes only if the

conduit is rigid heavy gauge steel with threaded connections and lock nuts at all boxes

and all connections of the conduit system should be checked for good electrical

83

continuity. Where flexible connections are made to equipment, earthing jumpers should

be provided.

8. The earth wires should be covered with PVC.

9. All electrical equipment appliances, laboratory equipment in workshops, laboratories be

earthed to earth tape fixed to walls. The earth tape should be high conductivity copper

conductor neatly and firmly secured to the walls.

10. The earth tape shall be connected to the low tension switchboard earth bus.

11. All distribution boards should be provided with an earth bus or earth terminal and these

should be connected to the earth bus in the main switch-board by earth conductors

included with the feeders.

12. Connection between earth bars and equipment frames and stranded copper cables

should be made with appropriate compression lugs, bolts, nuts and lock washers.

Contact surfaces should be thoroughly cleaned and tinned or thermo welded

connections can be used.

13. Lugs, bolts, nuts, washers, screws, clamps, cleats and other items which come into

direct contact with copper earth bars, tapes, cables, etc. should be non-ferrous and

manufactured from brass, bronze or other suitable conducting material which will not

cause electrolytic corrosion.

14. Connection between copper and galvanized structures should additionally be tinned.

15. Earthing tapes shall be of continuous unbroken lengths.

16. If jointing becomes absolutely necessary, then, after obtaining approval of the Engineer‟s

Representative the tapes should be joined by fusion welding „Them weld‟ or similar

process.

17. The earth bus in the main switchboard should be connected to the panel room earth bus.

The panel room earth bus should be connected to the earthing points.

18. The maximum overall earth resistance between any point on the earth installation and

general mass of the earth should be less than 2 ohm.

19. The connection between earth conductors and earth rods should be made by means of

high strength corrosion resistant copper alloy connector clamps and brazed.

20. The tops of the electrodes should be protected from any damage and should be easily

accessible being enclosed in pits equipped with covers.

Capacitor Banks:


The capacitor banks should conform in design, material, construction and performance to the

latest editions of the IEC standards, their corresponding British/European (BS EN) or American

(ANSI, UL) standards and in particular to the following publications:

1. IEC 61921: Power capacitors – Low voltage power factor correction banks.

2. IEC 60831-1: Shunt power capacitors of the self-healing type for a.c. systems having a rated

voltage up to and including 1000V - Part I: General-Performance, testing and rating-Safety

requirements-Guide for installation and operation.

84

3. IEC 60831-2: Shunt power capacitors of the self-healing type for a.c. systems having a rated

voltage up to and including 1000V - Part 2: Ageing test, self-healing test and destruction test.

4. IEC 61439-1: Low-Voltage Switchgear and Control gear Assemblies – Part 1: General Rules

5. IEC 60076-6: Power transformers - Part 6: Reactors

6. IEC 60747-6 : Semi-conductor devices. Discrete devices. Part 6: Thyristors.

7. IEC 60085-1: Electrical insulation – Thermal evaluation and designation.

8. IEC 60664: Insulation coordination for equipment within low- voltage systems.

9. IEC 60947-1: Low-voltage switchgear and control gear - Part 1: General rules.

10. IEC 60947-2: Low-voltage switchgear and control gear - Part 2: Circuit breakers.

11. IEC 60947-3: Low-voltage switchgear and control gear-devices. Part 3: Switches,

disconnectors, switch- disconnectors and fuse combination units.

12. IEC 60947-4-1: Low-voltage switchgear and control gear – Part 4-1: Contactors and motor

starters.

13. IEC 60502-1: Power cables with extruded insulation and their accessories for rated voltages

from 1 kV (Um=1.2kV) up to 30 KV (Um=36 kV) Part-1: Cables for rated voltages of 1 kV

(Um=1.2 kV) and 3KV (Um=3.6 kV).

14. IEC 60529: Degree of protection provided by enclosures (IP code).

15. UL 508A: Low voltage switched power factor correction banks assembly.

16. UL 810: Low voltage capacitors.

17. IEEE 519-1992: IEEE Recommended Practices and Requirements for Harmonic Control in

Electric Power Systems.

General observations / recommendations:

1. The capacitors banks, power factor controllers, power quality meters, switchgear and

other equipment must give continuous and trouble free service under the arduous

conditions. The electrical rooms wherein the capacitor banks are installed should have

suitable ventilation to ensure uninterrupted operation of these devices.

2. The capacitor units required for the different types of low voltage capacitor banks should

be self-healing type with individual discharge resistors and should be protected against

internal faults, over pressure, etc., and manufactured in full compliance with and tested

to the requirements of the International Electro-technical Commission Publication No.

IEC 60831, Part-1 and Part 2.

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8. Proposed Drawings:

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9. Proposed Drawings for Nine New Units:

WHO final

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