electrical hazards in the textile and garment industry · electrical hazards in the textile and...
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Electrical Hazards in the
Textile and Garment Industry
Practical Solutions for avoiding
danger
![Page 2: Electrical Hazards in the Textile and Garment Industry · Electrical Hazards in the Textile and Garment Industry Practical Solutions for avoiding danger. Electrical Hazards, Dipl.-Ing](https://reader031.vdocuments.mx/reader031/viewer/2022013010/5f0202dc7e708231d4022336/html5/thumbnails/2.jpg)
14.02.2017Electrical Hazards, Dipl.-Ing. Florian Kraugmann Seite 2
Introduction
Hazards arising from current flowing through the human body
Examples of “unacceptable” and “acceptable” situations
Fig. 1 by F. Kraugmann
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Hazards caused by electricity
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Deadly failure at power rail
During non electrical maintenance
next to the power rail
Even the power rail was “finger safe”
Worker slipped off and the
screwdriver touched the power rails
Measurements
electrical hazards must be consider in
risk assessment too
Switch off electrical power
Cover power rails
Fig. 2 by BG ETEM
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Contact with hot and
harmful substances
Secondary hazardscurrent flowing
through human body
Hazards caused by electricity
Accidents caused by electricity can be divided into three main parts:
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Fig. 3 by Napo [6] Fig. 4 by BG ETEM
Fig. 4 by BG ETEM
Fig. 5 by Napo [6]
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current flowing through the human body
The extent of injury reflects the impact of a series of factors, such as:
Amperage
Path of current
Frequency of current
Ambient conditions
(e.g. humidity, temperature)
Length of contact time
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Fig. 6 by F. Kraugmann
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current flowing through the human body
- Can cause electric shock with a harmful effect on the internal
organs and their proper function
- Most vulnerable are cardiac activities
- Weak current mostly causes functional disorders, while heavy
current causes human tissue burn, especially if the current goes
in and out of the body
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The current that may cause an injury is about 1/10th of the
current flowing through a light bulb!
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current flowing through the human body
The extent of injury reflects the impact of a series of factors:
Amperage
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Injury: Amperage:
The lower limit of noticeability: 0,5 mA to 3 mA
Pain threshold: > 3,5 mA
Limit when you get stick on to it: 10 mA to 20mA
The lower limit of ventricular fibrillation: > 30 mA
Burn: > 2 A
Injury: Amperage:
The lower limit of noticeability: 0,5 mA to 3 mA
Pain threshold: > 3,5 mA
Limit when you get stick on to it: 10 mA to 20mA
The lower limit of ventricular fibrillation: > 30 mA
Burn: > 2 A
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current flowing through the human body
The resistor of a human body at 230 V in according
to the current path
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current path resistor of human body
hand to hand 1000 Ω
foot to foot 1000 Ω
hands to feet 500 Ω
hand to feet 750 Ω
hand to chest 450 Ω
hands to chest 230 Ω
hand to backside 550 Ω
hands to backside 300 Ω
current (hand to hand) = 230V / 1000Ω = 230mA
The lower limit of ventricular fibrillation is about > 30mA
current (hand to hand) = 230V / 1000Ω = 230mA
The lower limit of ventricular fibrillation is about > 30mA
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Examples for “unacceptable” and “acceptable” conditions
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Fig. 7 by IVSS [1] Fig. 8 by IVSS [1]
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Examples for “unacceptable” and “acceptable” conditions
Fig. 9 by F. Kraugmann Fig. 10 by F. Kraugmann
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Examples for “unacceptable” and “acceptable” conditions
Fig. 11 by F. Kraugmann Fig. 12 by F. Kraugmann
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Examples for “unacceptable” and “acceptable” conditions
Fig. 14 by BG ETEMFig. 13 by F. Kraugmann
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Examples for “unacceptable” and “acceptable” conditions
Fig. 15 by F. Kraugmann Fig. 16 by BG ETEM
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Examples for “unacceptable” and “acceptable” conditions
Fig. 17 by F. Kraugmann Fig. 18 by BG ETEM
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Examples for “unacceptable” and “acceptable” conditions
Fig. 19 by F. Kraugmann Fig. 20 by F. Tamberg
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Examples for “unacceptable” and “acceptable” conditions
Fig. 21 by F. Kraugmann Fig. 22 by F. Kraugmann
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Examples for “unacceptable” and “acceptable” conditions
Fig. 23:motor of textile crabbing machinery by F. Kraugmann
Fig. 24: Cable glands should be used to insert the cable into the metallic case by F. Kraugmann
Fig. 24 by BG ETEM
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Examples for “unacceptable” and “acceptable” conditions
Fig. 25: findings found at spinning machines by F. Kraugmann
Fig. 26: Cable glands are missing by F. Kraugmann
Fig. 27: by F. Kraugmann
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Examples for “unacceptable” and “acceptable” conditions
Fig. 28:cable reel is not firmly clamped in the sockets anymore by F. Kraugmann
Fig. 29 by Napo [6]
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Summary
Basic rules for safe use of electrical equipment and tools:
It shall be designed and installed for safe operation
Periodic checks are definitely required
It shall be repaired safely and for safe further operation
Never by-pass the protective device
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List of references
[1] „Hazards arising from Electricity“, ISSA Section for Electricity
[2] “Golden Rules for Electrical Safety for the Layman”, ISSA Section for Electricity
[3] “Safety Rules for the Electrical Expert”, ISSA Section for Electricity
[4] „Sicherheit bei Arbeiten an elektrischen Anlagen“, BGI 519, BG ETEM
[5] „ Thermal hazards from electric fault arc“, DGUV Information 203-078, BG ETEM
[6] Pictures, Napo is co-produced by a European Consortium:
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Further Information
Electrical Hazards, Dipl.-Ing. Florian Kraugmann 14.02.2017 Seite 22
www.bgetem.de
www.dguv.de
www.issa.com
www.suva.ch
www.napo.net
http://bangladeshaccord.org