If the pump is fitted with oil drain port, firstly fill oil in the pump case.

有泄油口的泵，要向泵壳体中灌满油。

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The designer may lower the pressure on the packing by placing a throat bushing in the pump case (Figure).

设计者可在泵壳内放置喉道补心以降低在填料上的压力(图)。

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Packing or seals are used to prevent the pump leaking around the shaft where it emerges from the pump case.

为防止轴穿出泵壳处轴周围的泄漏，使用填料或密封。

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While a broken pump in this case was nothing more sinister than, well, a broken pump, the incident highlights the importance of IT security in public and private infrastructure.

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Even though the pumps were not essential since the plant is in a scheduled refueling shut down, and plant operators even moved a portable pump into the threatened building in case the regular pump had been submerged, the sense was that things were amiss.

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The charity aims to fundraise over the summer to improve its seal unit by making the pool bigger and fitting a pump system in case any further rescues are needed.

BBC: Guernsey