EN ISO 340:2022 PDF

Name: EN ISO 340:2022 — Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340:2022)
SKU: EN ISO 340:2022
Price: 60.09 EUR
Availability: InStock

Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340:2022)

Название (английский):

EN ISO 340:2022

Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340:2022)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 8 июня 2022 г.
Издание:: CEN EN 340 edition 2 version 1
ICS:: 13.220.40

Тип поставки:

Full version225 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:3 раб. дн. (перевод)

Цена:225 €

Описание (английский):

This document specifies a method for assessing, on a small scale, the reaction of a conveyor belt to an ignition flame source. It is applicable to conveyor belts having a textile carcass as well as steel cord conveyor belts.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 340:2022 - Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340:2022) specifies a small‑scale laboratory method to assess how conveyor belts react to an ignition flame source. Applicable to conveyor belts with a textile carcass and steel cord belts, the standard defines specimen preparation, test apparatus, safety precautions and pass/fail criteria for afterflame and re‑ignition. EN ISO 340:2022 supersedes the 2013 edition and is endorsed by CEN for national adoption across Europe.

Key topics and requirements

Scope and caution: The test assesses ignition behaviour on a small scale; results help evaluate ignition hazard but should not be used alone to conclude overall fire safety.

Test principle: A defined test piece is suspended vertically above a gas flame (LPG) for a specified time. After removal of the burner the afterflame time is measured and subsequent re‑flame under an air current is checked.

Specimen preparation:

Minimum distance from belt edge: 50 mm.
For textile carcass belts: 12 test pieces, each (200 mm ± 5 mm) × (25 mm ± 1 mm):
- 3 longitudinal with covers intact
- 3 transverse with covers intact
- 3 longitudinal with covers removed
- 3 transverse with covers removed
Covers removed by stripping, cutting or buffing (without overheating or damaging carcass).

Acceptance criteria:

Sum of afterflame times for six tests < 45 s and no single afterflame > 15 s.
Flame shall not reappear when a current of air is applied.
Note: In the European Single Market, these criteria may be replaced by the class requirements of EN 12882 or EN 14973.

Health & safety:

Controls for smoke and toxic fumes.
Safe handling, storage and disposal of LPG cylinders; gas equilibration considerations.

Applications - who uses this standard

Conveyor belt manufacturers for product development and quality control.

Independent testing laboratories performing flammability testing and certification.

Mine operators, bulk material handlers and OEMs specifying belts for installations where ignition risk must be evaluated.

Procurement, safety engineers and regulators assessing compliance with regional flammability classes.

Useful for comparing materials, covers and carcass constructions under a reproducible laboratory flammability test.

Related standards

EN 12882 - Conveyor belts for general purpose use: electrical and flammability requirements

EN 14973 - Conveyor belts for underground installations: electrical and flammability requirements

ISO 8056‑1, ISO 9162 - referenced for apparatus and LPG specifications

Keywords: EN ISO 340:2022, conveyor belts, laboratory scale, flammability test, afterflame, textile carcass, steel cord, LPG, EN 12882, EN 14973.

EN ISO 340:2022 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications - who uses this standard

Related standards

Технические детали

ISO 340:2022

Conveyor belts — Laboratory scale flammability characteristics — Requirements and test method

ISO 8056-1:1985

Aircraft — Nickel-chromium and nickel-aluminium thermocouple extension cables — Part 1: Conductors — General…

SIST ISO 9162:2014

Petroleum products - Fuels (class F) - Liquefied petroleum gases - Specifications