此外，所有安全卸压阀、支线和仪表管线应进行干燥和吹扫处理。
Also all safety relief valve line branch line and tubing line for instrument will be dried and purged.
氮气吹扫应同时包括空气管线和酸气管线路径。
This nitrogen purge should be routed through both the air line and the acid gas lines.
报道上海城市燃气工程中，浦东新港首站至北蔡末站天然气供气管线的通球扫线、全线整体试压以及氮气置换的施工实例。
It reports a practical engineering of natural gas supply pipeline from Pudong New Port to Beicai Station in Shanghai metropolitan fuel gas project.
报道上海城市燃气工程中，浦东新港首站至北蔡末站天然气供气管线的通球扫线、全线整体试压以及氮气置换的施工实例。
It reports a practical engineering of natural gas supply pipeline from Pudong New Port to Beicai Station in Shanghai metropolitan fuel gas project.
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