1501-02-IRTS@FACEBOOK (13012015)

Report No: 1501-02-IRTS

Inspected by Pyae Phyo Hein Page 1 / 28

TESLA A C

18, Kaki Bukit Road 3. #01-05

Entrepreneur Business Centre

Singapore 415978

Phone: (65) 62988550

Fax: (65) 62996069

[email protected]

http://www.ac-tesla.com.sg

AC Tesla Pte Ltd

Co. Reg. No. 201007221D

CLIENT: Facebook

LOCATION: 158 Cecil Street

INSPECTION AND REPORT BY: Pyae Phyo Hein

Certified Thermographer Level 1 (2014SG13N005)

INSPECTION DATE: 13 Jan 2015

REPORT NO.: 1501-02-IRTS

INFRARED THERMOGRAPHY

SCANNING REPORT

Facebook @ Cecil

AC TESLA PTE LTD

mailto:[email protected]



TABLE OF CONTENTS

1.0 INTRODUCTION ........................................................................................................................................... 3

2.0 OBJECTIVES ................................................................................................................................................. 3

3.0 NATURE OF WORKS .................................................................................................................................. 4

4.0 RECTIFYING ANOMALIES ......................................................................................................................... 5

5.0 INFRARED INSPECTION SUMMARY ...................................................................................................... 6

6.0 THERMAL IMAGER SPECIFICATIONS ................................................................................................... 7

7.0 LIST OF EQUIPMENT INSPECTED .......................................................................................................... 8

Appendices

- Appendix A: Reference images



1.0 INTRODUCTION Thermal imaging is the non-contact detection and measurement of infrared energy or temperature. All

objects on earth, hot or cold, radiate infrared energy.

Much like digital cameras, thermal imagers capture pictures. Instead of seeing visible light like digital

cameras, thermal imagers use a detector to measure infrared energy. These measurements are then used

to create a thermal image by assigning colors to correspond with certain temperatures.

Building inspectors, energy auditors, restoration & remediation contractors, facility managers and property

owners use thermal imaging to find hidden problems faster and document findings with visual proof. The

time savings and reporting ability allows these users to make money, lower costs, increase productivity and

reduce risk.

2.0 OBJECTIVES The objective to carry out Infra-Red Themography Scanning (IRTS) on building and facilities system is to

discover any anomalies which cannot be detected with human eyes.

Surface temperature can tell you a lot about an electrical system. Problems that are otherwise invisible to the

naked eye are suddenly clear as day when you look through an infrared lens. Overheating electrical circuits

can all be detected and visibly documented with handheld infrared thermometers and thermal imaging

cameras.

This thermal imager is a valuable tool to assist maintenance personnel to carry out rectification or preventive

measure against any anomalies found. Locate overheating components safely in electrical systems,

expressed as hot spots in thermal images. Inspections of electrical installations should be conducted at full

load to identify potential problems, such as loose connections, load imbalance, and overloads, which, when

not attended to, can lead to outages, equipment damage, and safety risks including fire.



3.0 NATURE OF WORKS IRTS is a non-destructive and non-contact with LIVE part of any Electrical system. IRTS can only be carried

out on Low Voltage System of no more than (1000Vac). The basic requirement for IRTS to be effective is

that there shall be no obstruction at the front of the IRT camera during scanning work. The thermal camera

shall only capture the temperature on the very first surface in the line of sight of the camera. It will not detect

any temperature behind a clear Glass/perspex, etc. as such, it is essential to remove any protection cover

such as PVC/Perspex cover for IRTS to be carried out.

The following images clearly illustrate the benefit of using thermal imaging camera to discover anomalies

which human eye cannot see. Abnormal heating was capture using a thermal imaging camera.

Commonly inspected components

• (3 phase) Power distribution

• Fuse boxes

• Cables & connections

• Relays/Switches

• Insulators

• Capacitors

• Circuit breakers

• Controllers

• Transformers

• Motors

• Battery banks

Typical reasons for temperature hotspots or

deviations

• Unbalanced loads

• Harmonics (3rd harmonic current in

Neutral)

• Overloaded systems/excessive current

• Loose or corroded connections increased

resistance in the circuit (typically one side

of components heats up)

• Insulation failure

• Component failure

• Wiring mistakes

• Underspecified components (like fuses)

would heat up on both side of the fuse

Infrared Thermal

Image Visible Image



4.0 RECTIFYING ANOMALIES

During the thermal imaging process, it reveals electrical anomalies that will cause potential damage to the

electrical system. In the least severe cases, wastage of energy cause by unnecessary heat loss, while in the

most severe cases, excessive heating will cause fire or damaging expensive equipment.

It is of the best interest for the maintenance personnel to carry out immediate action to rectify these

anomalies regardless of its severity. It is important to note that a non-severe exception now could cause

severe damage in due course as component failures are unpredictable

However, in most cases, power de-energization on the electrical system is required for these rectification

works, thus affecting the whole operation. In additional, time-line is required for ordering of replacement

component. The maintenance shall take into consideration of these factors to schedule the rectification work.

In our report, the thermographer shall provide recommendations on the severity level to assist the

maintenance personnel to make decision on the necessary and urgency of corrective action to be taken.

It is recommended to carry out the regular thermal graph scanning to check on the health state of the

electrical system. The following are frequency matrix for reference.

Infrared Thermograph scanning Frequency Matrix (Year Interval)

Equipment Condition

Poor Average Good

Equipment Critically Category

Low 1.0 2.0 2.5

Medium 0.5 1.0 2.0

High 0.5 0.75 1.0

The Maintenance Personnel shall assess its equipment condition and the critically category of its equipment

within its installation.

General guides to assess the condition of the equipment are based on the age of the equipment, and the

continuous loading factor on its equipment. Another important factor to consider is also the type of

environment that the equipment was installed. Dusty, humid and poorly ventilated environment require more

frequent assessment on it equipment

The equipment critically shall be categorized based on Power Supply availability importance to the electrical

system. Where lowest critically being residential area while high critically level being Data centre, hotel,

utilities.etc.



5.0 INFRARED INSPECTION SUMMARY The infra-red inspection at Facebook @Cecil on 13rd January 2015. A total of 11 equipment were inspected and 1 Exception was recorded during this inspection.

1. The inspection exercise has shown no anomalies in the electrical distribution equipment. It is recommended to carry out regular Infrared thermal scan.

We would recommend that the IRTS to be carried out on yearly basis.

The potential problem was listed according to its repair priority ratings. The ratings are classified as follows:-

CLASSIFICATION OF REPAIR PRIORITY

Repair Priority

Temperature Difference

Descriptions

1 > 30oC Corrective measure to be carry out IMMEDIATELY

2 10 to 30oC Corrective measure to be carry out at the EARLIEST OPPORTUNITY

3 5 to 10oC Corrective measure to be carry out at NEXT MAINTENANCE SCHEDULE

4 3 to 5oC To monitoring closely and carry out IRTS between 3~6 months

0 <3oC No corrective action require. Thermal image for reference only. To carry out IRTS between 6~12 months

INSPECTION RESULTS

Repair Priority Summary of Thermal Anomalies

1 0

2 1

3 0

4 0



6.0 THERMAL IMAGER SPECIFICATIONS

Model Flir T420 2.0

Serial No. 62106191

Temperature Measurement Range -20o C to +650 o C (-4 o F to +1202 o F)

Temperature Measurement Accuracy ± 2 o C or 2% ( at 25 o C nominal, whichever is greater)

Image Capture Frequency 9 Hz

Detector Type 320x240 Focal Plane Array, Uncooled Microbolometer

Infrared Spectral Band 7.5 µm to 14 µm (Long Wave)

Thermal Sensitivity (NETD) ≤ 0.05 o C at 30 o C Target Temp. (50mK)

Minimum Span (In Manual Mode) 2.5 o C( 4.5 o F)

Minimum Span (In Auto Mode) 5 o C( 9 o F)



7.0 LIST OF EQUIPMENT INSPECTED

Item Location Name of Equipment

Description Temperature Category

Reference image

Remark

01

Level 14 (Store Room)

SB 14

125 A Fuse 0 02

02 Main Incoming MCCB 0 03

03 Outgoing Breaker 0 04

04 EDB-14 Overview 0 05

05 Level 14 (Corridor)

DB-1 Main Incoming MCB 0 06

06 DB - 2

Main Incoming MCB 0 07

07 Cable Termination 3 01 X

08 Level 14

(Server Room) DB – 3 Main Incoming MCB 0 08

09

Level 13 (Office Area)

DB-L Main Incoming MCB 0 09


11 DB-P

Main Incoming MCB 0 11


13

Level 13 (Store Room)

MSB

Main Incoming MCCB 0 13

14 Main Outgoing MCCB 0 14


16 DB A/C

Main Incoming MCCB 0 16


18 EDB 13 Main Incoming MCB 0 18

19 DB 13 Main Incoming MCB 0 19

Legend

* - Refers to equipment inspected with less than 30% load at time of scan which

may influence the severity levels reported for this group.

NOP - Not Operating

NA - Not Applicable / Not Accessible

X - Thermal anomaly found

- No thermal anomaly

- No thermal anomaly but inspection restricted to surface scan only



Appendix A



INFRARED THERMAL SCAN REPORT

Reference Image No.

01

Circuit Information Circuit No: Overview Type of component: Cable Termination

Current Loading R / L1 Y / L2 B / L3 N

- - - 3.3

Reference Temperature Fault Temperature Temperature Difference

47.3oC 57.3oC 10oC

Ambient Temperature 30oC Temperature

Category 3

ANALYSIS OF THERMOGRAM

Possible Thermal Anomaly on the neutral cable termination of BI connector. Possible cause is caused by poor contact on this termination.

RECOMMENDATIONS

Forward this thermal graphic report to LEW in-charge for necessary corrective measure. Recommend to carry out infrared thermal scan upon the completion of corrective action.

General Information Customer : Facebook Date of Inspection : 13 Jan 2015

Location : Corridor level 14 Name of Switchboard / Equipment

: DB - 2

Thermogram 13.01.2015 Photo

Sp2

Sp1

26.9

80.7 °C

40

60

80

Sp1 Temperature 57.3 °C





Reference Image No.

02

Circuit Information Circuit No: - Type of component: 125A Fuses


- - - -


- - -


Category 0


No Thermal Anomaly was detected.

RECOMMENDATIONS

To carry Out Thermogaphy inspection at least once a year.


Location : Store Room level 14 Name of Switchboard / Equipment

: SB-14


Sp2 Sp3Sp1

25.4

53.2 °C

30

40

50







Reference Image No.

03

Circuit Information Circuit No: Main Switch Type of component: 125A TPN MCCB


31.4A 22.4A 21.8A 14.3A


- - -


Category 0



RECOMMENDATIONS




: SB-14


Sp2Sp4

Sp3Sp1

24.2

56.1 °C

30

40

50








Reference Image No.

04

Circuit Information Circuit No: Overview Type of component: OUTPUT MCB


- - - -


- - -


Category 0



RECOMMENDATIONS




: SB-14


Sp2

Sp3Sp1

26.0

38.4 °C

30

35







Reference Image No.

05

Circuit Information Circuit No: Overview Type of component: OUTPUT MCB


1.4A 3.2A 1.1A 2.6A


- - -


Category 0



RECOMMENDATIONS




: EDB-14


Sp2

Sp1

23.7

45.1 °C

30

40






Reference Image No.

06

Circuit Information Circuit No: Main Incoming MCCB Type of component: 63A TPN MCCB


7.3A 8.8A 2.0A 8.7A


- - -


Category 0



RECOMMENDATIONS




: DB-1


Sp2

Sp1

25.4

52.5 °C

30

40

50






Reference Image No.

07

Circuit Information Circuit No: Main Incoming MCCB Type of component: 63A TPN MCCB


5.6A 12.3A 7.1A 8.8A


- - -


Category 0



RECOMMENDATIONS




: DB - 2


Sp2

Sp1

27.1

57.0 °C

30

40

50






Reference Image No.

08

Circuit Information Circuit No: Main Incoming MCB Type of component: 63A TPN MCB


8.6A 5.5A 5.4A 5.7A


- - -


Category 0



RECOMMENDATIONS



Location : Server Room level 14 Name of Switchboard / Equipment

: DB - 3


Sp2

Sp1

23.7

42.3 °C

25

30

35

40






Reference Image No.

09

Circuit Information Circuit No: Main Breaker Type of component: 40A TPN MCB


6.7A 10.8A 4.4A 6.2A


- - -


Category 0



RECOMMENDATIONS



Location : Office Area level 13 Name of Switchboard / Equipment

: DB-L


Sp2

Sp1

28.0

47.5 °C

30

35

40

45






Reference Image No.

10

Circuit Information Circuit No: Outgoing Breakers Type of component: OUTPUT MCB


- - - -


- - -


Category 0



RECOMMENDATIONS




: DB-L


Sp2

Sp1

27.6

45.7 °C

30

35

40

45






Reference Image No.

11

Circuit Information Circuit No: Main Breaker Type of component: 40A TPN MCB


11.8A 9.3A 7.8A 11.5A


- - -


Category 0



RECOMMENDATIONS




: DB-P


Sp2

Sp1

28.1

49.5 °C

30

40






Reference Image No.

12

Circuit Information Circuit No: Outgoing Breakers Type of component: OUTPUT MCB


- - - -


- - -


Category 0



RECOMMENDATIONS




: DB-P


Sp2

Sp1

27.7

52.2 °C

30

40

50






Reference Image No.

13

Circuit Information Circuit No: Main Incoming Breaker Type of component: 100A TPN MCCB


- - - -


- - -


Category 0



RECOMMENDATIONS




: MSB


Sp2

Sp1 22.2

36.5 °C

25

30

35






Reference Image No.

14

Circuit Information Circuit No: Main Outgoing Breaker Type of component: 100A TPN MCCB


19.2A 19.1A 14.8A 14.9A


- - -


Category 0



RECOMMENDATIONS




: MSB


Sp2

Sp1

23.8

46.1 °C

30

40






Reference Image No.

15

Circuit Information Circuit No: Outgoing Breakers Type of component: OUTPUT MCBs


- - - -


- - -


Category 0



RECOMMENDATIONS




: MSB


Sp2Sp4

Sp3 Sp1

24.7

50.2 °C

30

40

50








Reference Image No.

16

Circuit Information Circuit No: Main Breaker Type of component: 63A TPN MCCB


0.6A 5.6A 0A 5.3A


- - -


Category 0



RECOMMENDATIONS




: DB A/C


Sp2

Sp1

23.8

28.4 °C

24

26

28






Reference Image No.

17

Circuit Information Circuit No: Outgoing Breakers Type of component: OUTPUT MCBs


- - - -


- - -


Category 0



RECOMMENDATIONS




: 13 Jan 2015


Sp2

Sp1

22.5

43.1 °C

30

40






Reference Image No.

18

Circuit Information Circuit No: Overview Type of component: 32A TPN MCB


0.9A 3.1A 0.3A 2.1A


- - -


Category 0



RECOMMENDATIONS




: EDB - 13


Sp2

Sp1

22.5

40.8 °C

25

30

35

40






Reference Image No.

19

Circuit Information Circuit No: Main Incoming MCB Type of component: 63A DP MCB


15A - - 10.3A


- - -


Category 0



RECOMMENDATIONS




: DB-13


Sp2

Sp1

23.8

51.3 °C

30

40

50



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1501-02-IRTS@FACEBOOK (13012015)