Flush system with hydrogen until required purity is reached.

用氢冲洗设备,直到达到所要求的纯度.

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Clean and maintain pipe units and fittings and flush system.

清洁和维护管道,配件及冲水系统.

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HAZOP would have found that the low pressure flush system needed relief protection.

对中错差或阀门泄漏会使低压冲洗系统出现过压.

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