ISO 5175-1:2017 PDF
Gas welding equipment — Safety devices — Part 1: Devices incorporating a flame (flashback) arrestor
Gas welding equipment — Safety devices — Part 1: Devices incorporating a flame (flashback) arrestor
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 15
- Дата публикации:
- 17 октября 2017 г.
- Издание:
- ISO IS 5175 edition 2 version 1
- ICS:
- 25.160.30
ISO 5175-1:2017 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air incorporating a flame (flashback) arrestor used downstream of manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes. ISO 5175-1:2017 does not specify the location of these devices in the gas system. ISO 5175-1:2017 is not applicable to safety devices not incorporating a flame arrestor, covered by ISO 5175‑2. ISO 5175-1:2017 does not apply to the use of safety devices incorporating flame arrestors for applications with premixed oxy/fuel or air/fuel gas supply systems, e.g. downstream of gas mixers or a generator to produce hydrogen/oxygen mixture by electrolytic decomposition of water.
Abstract
Overview
ISO 5175-1:2017 - "Gas welding equipment - Safety devices - Part 1: Devices incorporating a flame (flashback) arrestor" specifies general requirements and type tests for safety devices that incorporate a flame (flashback) arrestor used downstream of manifold, cylinder or pipeline regulators and upstream of blowpipes for welding, cutting and allied processes. The standard covers design, materials, gas tightness, pressure resistance and functional performance tests but does not prescribe device location in a gas system. It excludes safety devices that do not incorporate a flame arrestor (see ISO 5175-2) and premixed oxy/fuel or air/fuel systems downstream of gas mixers or electrolysis generators.
Key topics and technical requirements
- Flame arrestor performance: Devices must quench flashbacks when tested according to the standard’s flashback resistance test (Clause 6.7).
- Pressure resistance: Housings must withstand a test pressure equal to ten times the device’s maximum operating pressure and in all cases not less than 6 MPa (60 bar) without permanent deformation.
- Gas tightness:
- External gas tightness per ISO 9090.
- Internal leakage limits: maximum 50 cm³/h for connection bores
Технические детали
- Технический комитет
- ISO/TC 44/SC 8 - Equipment for gas welding, cutting and allied processes
- SKU
- ISO 5175-1:2017
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