美利体育登录入口官网:BS EN ISO 16486-1:2020(2023)
供应气体燃料的塑料管道系统 - 带熔接和机械连接的未塑化聚酰胺（PA-U）管道系统 第1部分：概述
Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA - U) piping systems with fusion jointing and mechanical jointing Part 1 : General
Technical Overview of PA-U Piping Systems
The BS EN ISO 16486-1:2020 standard specifies requirements for unplasticized polyamide (PA-U) piping systems used in gaseous fuel distribution. Key technical aspects include:
| Material Property | PA-U 11 | PA-U 12 |
|---|---|---|
| Density Range (kg/m?) | 1,020-1,050 | 1,000-1,040 |
| Minimum Viscosity Number (ml/g) | 180 | |
| Carbon Black Content (%) | 1.0-2.5 (black compounds) | |
Material Classification System
The standard implements a dual classification scheme based on Minimum Required Strength (MRS):
Key Designation Parameters:
- PA-U 11 160: σLPL (20°C, 50y) = 16-18 MPa
- PA-U 12 180: σLPL (20°C, 50y) = 18-20 MPa
Classification follows ISO 12162 requirements with design coefficient C ≥ 2 for gas applications.
Critical Performance Requirements
The standard mandates rigorous testing protocols for PA-U compounds:
| Test Category | Requirement | Test Method |
|---|---|---|
| Chemical Resistance | ≤20% property change | Annex B |
| Weathering Resistance | ≥7.0 GJ/m? radiation | ISO 16871 |
| Rapid Crack Propagation | pc ≥ 1.5 MOP | ISO 13478 |
Implementation Considerations
Key installation and maintenance factors:
- Fusion compatibility restricted to same PA-U type (11/12)
- Hydrogen permeation rates range 79.1-84.2 ml·mm/m?·bar·day
- Critical pressure testing required for dn > 90mm pipes
The standard supersedes BS ISO 16486-1:2020 and incorporates corrigendum updates from February 2023.
请注意，本内容不等同于标准原文，内容仅供参考，本站不保证内容的正确性。准确、完整的信息请参阅正式版文本。
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- 标准号
- BS EN ISO 16486-1:2020(2023)
- 发布
- 2023年
- 总页数
- 36页
- 发布单位
- 英国标准学会
- 当前最新
- BS EN ISO 16486-1:2020(2023)
- 引用标准
- ISO 1043-1 ISO 1110 ISO 1167-1 ISO 1167-2 ISO 1183-1 ISO 1183-2 ISO 12162 ISO 13477 ISO 13478 ISO 13479 ISO 13954 ISO 15512 ISO 16396-1 ISO 16396-2 ISO 16486-5 ISO 16871 ISO 179-1 ISO 2505 ISO 291 ISO 307 ISO 472 ISO 527-1 ISO 527-2 ISO 6259-1 ISO 6259-3 ISO 6964 ISO 9080
- 本体
- 最大操作压力 未增塑聚酰胺
本文件规定了未增塑聚酰胺 (PA-U) 化合物的一般特性，用于制造由这些化合物制成的管道、配件和阀门，用于埋地和供应气体燃料。它还规定了它所引用的测试方法的测试参数。ISO 16486 系列适用于 PA-U 管道系统，其组件通过熔接和/或机械连接连接。本文件建立了一个计算和设计方案，以此为基础确定 PA-U 管道系统的最大工作压力 (MOP)。