This document provides the as-built lightning protection system (LPS) design for Tusuka Processing Ltd.'s Wash Unit-03 facility in Bangladesh. It includes: - A cover page with project details and approval signatures. - An index of drawings for the LPS design. - Drawings showing legends and symbols, risk assessment details, calculations for the number of down conductors needed, a 2D view and isometric view of the facility layout with LPS equipment labeled. - The design is based on NFPA 780 standards for Class I LPS systems and includes air terminals, conductors, grounding electrodes, and inspection pits to protect the structure under 75 feet tall from lightning strikes.

1. AS BUILT LIGHTNING PROTECTION SYSTEM DESIGN
(LPS) OF TUSUKA PROCESSING LTD.
(WASH UNIT-03)
DESIGN STANDARD : NFPA 780, EDITION 2014
NEELNAGOR, KONABARI, GAZIPUR, BANGLADESH
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-00
GENERAL
TUSUKA PROCESSING LTD.
NEELNAGOR, KONABARI
GAZIPUR, BANGLADESH
OWNER
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
DATE:07-02-2021
AS BUILT LPS_TOP PAGE
TUSUKA WASH UNIT-03
NEELNAGOR, KONABARI,
GAZIPUR, BANGLADESH
TUSUKA PROCESSING LTD.
NEELNAGOR, KONABARI
GAZIPUR, BANGLADESH ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319
ENGR.MD. MUNZURUL KADER ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP

2. DRAWING INDEX
L-01
L-02
L-03
L-04
L-05
GENERAL NOTES
NO. OF DOWN CONDUCTOR CALCULATION
LIGHTNING PROTECTION RISK ASSESSMENT
ISOMETRIC VIEW OF WASH UNIT-03
LPS DRAWING INDEX
LEGENDS & TYPICAL BONDING DETAILS
PAGE
NO.
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-01
GENERAL
OWNER
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
DATE:07-02-2021
AS BUILT LPS_ DRAWING INDEX
TUSUKA PROCESSING LTD.
NEELNAGOR, KONABARI
GAZIPUR, BANGLADESH
TUSUKA WASH UNIT-03
NEELNAGOR, KONABARI,
GAZIPUR, BANGLADESH
2D VIEW OF WASH UNIT-03
TUSUKA PROCESSING LTD.
NEELNAGOR, KONABARI
GAZIPUR, BANGLADESH ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319
ENGR.MD. MUNZURUL KADER ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP

3. SL. NO DESCRIPTION SYMBOL
01.
GROUNDING ELECTRODE
-SOLID COPPER,
DIA:12.7mm,LONG: 6.096m (20 ft)
02.
ROOF , CROSS RUN & DOWN CONDUCTOR,
GROUND RING CONDUCTOR.
-SOLID ALUMINUM WIRE
FOR CLASS I: DIA(9)mm
03.
ROOF , CROSS RUN & DOWN CONDUCTOR,
GROUND RING CONDUCTOR.-SOLID ALUMINUM WIRE
FOR CLASS II: DIA(12)mm
04.
LEGENDS:
AIR TERMINAL :
24" LONG SOLID ALUMINUM
FOR CLASS I: DIA -12.7mm, FOR CLASS II: DIA -15.9mm
GROUNDING ELECTRODE
DIA:12.7mm,SOLID COPPER,
LONG: 12m (40 ft)
CONNECTING CLIP
DOWN CONDUCTOR
-SOLID ALUMINUM WIRE
FOR CLASS I: DIA(9)mm
FOR CLASS II: DIA(12)mm
AIR TERMINAL :
24" LONG SOLID ALUMINUM
FOR CLASS I: DIA - 12.7mm
FOR CLASS II: DIA -15.9mm
AIR TERMINAL BASE 75x75x6
SQUARE CLAMP
ROOF & CROSS RUN CONDUCTOR
-SOLID ALUMINUM WIRE
FOR CLASS I: DIA(9)mm
FOR CLASS II: DIA(12)mm
EARTH RESISTANCE
INSPECTION PIT
TO BE CONNECTED WITH GROUND RING
ELECTRODE
-SOLID COPPER STRIP
FOR CLASS I: (10x3)mm
FOR CLASS I: (20x3)mm
EARTH INSPECTION PIT DETAILS
EARTH INSPECTION PIT
R.C.C COVER
5"
2'-0"
2'-0"
5"
PLAN (EARTHING)
EARTH TEST POINT
COPPER BUSBAR
(L: 200mm, W: 30mm, T: 5mm)
GROUNDING ELECTRODE (MADE OF COPPER)
-DIA: 12.7mm, L: 12m
NB: THE EARTH RESISTANCE OF THE ELECTRODE
SHOULD BE BELOW 10 OHMS.
FOR CLASS I: DIA(9)mm
FOR CLASS II: DIA(12)mm
FOR CLASS I: DIA(9)mm
FOR CLASS II: DIA(12)mm
SECTION VIEW
8'-0"
2'-0"
0'-18"
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-02
GENERAL
OWNER
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
DATE: 07-02-2021
AS BUILT LPS_ LEGENDS
80 x 80 x 6 mm
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
TUSUKA WASH UNIT-03
Neelnagor, Konabari,
Gazipur, Bangladesh.
BIMETALIC TEST POINT
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh. ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319
ENGR.MD. MUNZURUL KADER ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP

4. P
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-03
GENERAL
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
DATE: 07-02-2021
AS BUILT LPS_ TUSUKA WASH UNIT-03
OWNER
TUSUKA WASH UNIT-03
Neelnagor, Konabari
Gazipur, Bangladesh.
LIGHTNING PROTECTION RISK ASSESSMENT FOR TUSUKA WASH UNIT-03
01. DESIGN STANDARD: NFPA 780, EDITION 2014
02. MATERIAL SELECTION:
HERE THE BUILDING HEIGHT IS LESS THEN 75 FT. SO CLASS I MATERIAL SHOULD BE
USED HERE.
- STRUCTURE DOES NOT EXCEEDING 75 ft (23m) IN HEIGHT SHALL BE PROTECTED
WITH CLASS I MATERIALS AS SHOWN BELOW:
03. EARTH RESISTANCE SHOULD BE BELOW 10 ohm.
04.AIR TERMINALS ARE LOCATED WITHIN 2 FT OF ENDS OF EDGES OR RIDGES.
05. AIR TERMINAL HEIGHT IS MINIMUM 24" .
06. AIR TERMINAL TIP CONFIGURATIONS ARE SHARP OR BLUNT.
07. 25 FT MAXIMUM SPACING BETWEEN AIR TERMINALS ALONG EDGE.
08. ALL DETAILS ARE MENTIONED IN THE DRAWING AND
INSTALLATION WILL BE DONE AFTER APPROVAL FROM AUTHORITY.
ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319
ENGR.MD. MUNZURUL KADER
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
NO OF DOWN CONDUCTOR CALCULATION:
[according to NFPA 780, Section : 4.9.10]
TOTAL PERIMETER GARMENTS BUILDING : 676 FT
REQUIRED DOWN CONDUCTOR :245 /100 =2.45 ie 03 NOS .
SPACINGS AS FOLLOWS:
01. EARTH PIT-01 TO EARTH PIT 02 : 80 ft
02. EARTH PIT-02 TO EARTH PIT 03 : 67 ft
03. EARTH PIT-03 TO EARTH PIT 04 : 50 ft
04.EARTH PIT-04 TO EARTH PIT 05 : 46 ft
05. EARTH PIT-05 TO EARTH PIT 06 : 81 ft
06. EARTH PIT-06 TO EARTH PIT 07 : 72 ft
07. EARTH PIT-07 TO EARTH PIT 08 : 100 ft
08. EARTH PIT-08 TO EARTH PIT 09 : 96ft
09.EARTH PIT-09 TO EARTH PIT 01 : 84ft
BUILDING HEIGHT : 23.9 FT
ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP

5. P
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-04
GENERAL
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh. ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319 DATE: 07-02-2021
TUSUKA WASH UNIT-03
Neelnagor, Konabari
Gazipur, Bangladesh.
ENGR.MD. MUNZURUL KADER AS BUILT LPS_ TUSUKA WASH UNIT-03
OWNER
DOWN CONDUCTOR
01
2D VIEW OF TUSUKA WASH UNIT-03
19'-5" 19'-9" 16'-6" 17'-10"
DOWN CONDUCTOR
02
DOWN CONDUCTOR
07
DOWN CONDUCTOR
08
DOWN CONDUCTOR
06
DOWN
CONDUCTOR
04
DOWN
CONDUCTOR
09
18'-7" 11'-5" 17'-10" 18'-4" 18'-2" 18'-4" 15'-3"
20'-7"
20'-1"
20'
20'
18'-4"
18'-2"
18'-4"
17'-10"
11'-5"
17'-10"
18'-7"
17'-10"
13'-2" 16'-6" 14'-9''
17'-11''
17'
19'-9"
11'-7"
20'-5"
20'-3"
16'-10''
17'
17'-10"
16'-4"
13'-2" 16'-6"
16'-4" 12'-8''
19'-5" 19'-9" 16'-6" 17'-10" 18'-7" 11'-5" 17'-10" 18'-4" 18'-2" 18'-4" 15'-3"
17'-10"
20'
20'
20'-7"
20'-1"
20'
20'
DOWN
CONDUCTOR
05
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
DOWN CONDUCTOR
03
ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP

6. FIXTURE LEGEND
SYMBOL DESCRIPTION
Air Terminal (CLASS-I)
(Dia= 12.7mm )
(Dia= 15.9 mm ) Air Terminal (CLASS-II)
ROOF , CROSS RUN & DOWN CONDUCTOR,
GROUND RING CONDUCTOR.
-SOLID ALUMINUM STRIP
FOR CLASS I: DIA 9mm
ROOF , CROSS RUN & DOWN CONDUCTOR,
GROUND RING CONDUCTOR.
-SOLID ALUMINUM STRIP
FOR CLASS II: DIA 12mm
20'-3"
20'-5''
11'-7"
19'-9"
17'
17'-11''
16'-4"
13'-2"
16'-6"
14'-9''
19'-5"
19'-9"
16'-6"
17'-10''
18'-7"
17'-10"
11'-5"
17'-10"
18'-4"
18'-2"
18'-4"
15'-3''
20'-7"
20'-1"
20'
20'
15'-3''
18'-4''
18'-2''
18'-4''
17'-10''
11'-5''
17'-10"
18'-7"
17'-10''
16'-6''
16'-10"
17'
AIR TERMINAL :
24" LONG SOLID ALUMINUM
FOR CLASS I: DIA -12.7mm
ROOF & CROSS RUN CONDUCTOR
- SOLID ALUMINUM WIRE
FOR CLASS I: DIA(10) mm
214'-11"
113'
EARTH PIT-01
BIMETALLIC TEST POINT/JOINT
EARTH PIT-02
BIMETALLIC TEST POINT/JOINT
EARTH PIT-06
EARTH PIT-07
EARTH PIT-08
EARTH PIT-09
GROUNDING CONDUCTOR
DIA:12.7mm,SOLID COPPER,
LONG: 12m (40 ft)
BIMETALLIC TEST POINT/JOINT
EARTH PIT-04
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APPROVED
BY
SCALE: NTS
SHEET NO: LPS-05
GENERAL
DESIGNED
BY
ELECTRICAL
ENGINEER
CHECKED
BY
DESIGN
BY
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
DATE: 07-02-2021
TUSUKA WASH UNIT-03
Neelnagor, Konabari
Gazipur, Bangladesh.
AS BUILT LPS_ TUSUKA WASH UNIT-03
OWNER
ISOMETRIC VIEW OF WASH UNIT-03
14'-9''
16'-6''
13'-2''
16'-4''
19'-5"
19'-9"
16'-6"
17'-10''
18'-7"
17'-10"
11'-5"
17'-10"
18'-4"
18'-2"
18'-4"
21'-5"
EARTH PIT-05
ENGR. MARUF RAYHAN
B.Sc. (EEE) , AMIEB-19319
ENGR.MD. MUNZURUL KADER
TUSUKA PROCESSING LTD.
Neelnagor, Konabari
Gazipur, Bangladesh.
15'-9"
20'
20'
19'-4"
18'-8"
18'-1"
20'
EARTH PIT-03
BIMETALLIC TEST POINT/JOINT
ENGR.MD. SERAJUL ISLAM
Manager(Maintenance)
B.Sc in EEE,DUET,MIEB-37591
TUSUKA GROUP