在安全阀上应该连接排水管道，将任何可能的排放引导到安全的处置地方。
A drain line should be attached to the relief valve to channel any potential discharge to a safe place of disposal.
探讨了处于复杂环境下的大口径新老排水管道的连接技术。
The connection technique of large diameter old-new drainage pipes has been discussed under the complicated condition.
排水：区内的排水管道与市政管网连接，保证污水排放通畅。
Drainage: Drainage pipeline in the zone connects with municipal pipeline network, so as to make sure that sewage discharges smoothly.
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