Portwest Catalogue - Footwear Range

ESD

CHEMICAL

WHAT’S THE RISK? ESD or electrostatic dissipative refers to the static discharge when a statically charged person touches an object. Should this charge be transmitted through circuitry, the result could be that of catastrophic damage to sensitive components and circuits.

WHAT’S THE RISK? Chemical resistant footwear protects the wearer from chemical related hazards in the workplace. It’s important to understand the chemicals used in the environment and to use the appropriate classification of protective footwear to withstand chemical penetration and permeation according to the risk levels.

This part of IEC 61340-5-1:2016 describes a test method for determining the electrical resistance of footwear used in the control of electrostatic potential on people. This standard is suitable for use by the manufacturer of footwear as well as the end user. Electrostatic Conductive Footwear Footwear as tested by the method described in this standard with an electrical resistance of < 1Ω x 10 2 . Electrostatic Dissipative Footwear Footwear as tested by the method described in this standard with an electrical resistance of > 1Ω x 10 5 and < 1Ω x 10 8 . Antistatic Footwear Occupational and safety footwear standard - EN ISO 20345 1 x 10 5 ≤ R ≤ 1 x 10 9 Ω (0,1 to 1000 MΩ). The level of charge generated is influenced by atmospheric humidity.

WHO IS AT RISK? Those working in the chemical industry and in cleaning environments using harsh chemicals.

INJURIES This can cause skin sensitivity, irritation and chemical burns.

EN ISO 13832-3

Footwear protecting against chemicals - Part 3: Requirements for prolonged contact with chemicals. Resistance to degradation: Samples are placed in contact with the chemical for 24 hours. This footwear resists permeation and degradation by the stated chemicals (at least 3 from the list below)

IEC 61340-5-1

CODE CHEMICAL

CONDUCTIVE C

DISSIPATIVE

INSULATIVE

A B C D E F

Methanol Acetone Acetonitrile

ESD (metal plate) IEC 61340-5-1 < 10 8 Ω

Recommended resistance range EN 61340-5-1

Dichloromethane Carbon disulphide Toluene Diethylamine Tetrahydrofurane Ethyl acetate n-Heptane Sodium Hydroxide 40% Sulphuric Acid 96%

G H I J K L M

10 2 10 3

10 4

10 5 0

10 6

10 7

10 8 0

10 9

10 10 10 11 10 12

EN ISO 20345 1 x 10 5 ≤ R ≤ 1 x 10 9 Ω (0,1 to 1000 MΩ)

Nitric Acid 65% Acetic Acid 99% Ammonia Solution 25% Hydrogen Peroxide Solution 30% Isopropanol Sodium Hypochlorite (13 ± 1)% (active chloride) Hydrofluoric Acid 40% Formaldehyde 37%

N O P Q R S T

CONDUCTIVE

ANTISTATIC

INSULATIVE

- Toecap strength (200J or 100J)

|649

10_EUROW_Footwear_PART 1 V15.1.indd 649

24/08/2023 15:16