Refinery of Henan oilfield has built a mixing unit, and has gone into operation, the effect is better.

河南油田炼油厂根据本厂情况建成一套调合装置，并已投入使用，效果良好。

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So far the construction of infrastructure and workshops has finished, and the shipways and fitting-out berth have gone into operation.

目前该项目基础设施建设、厂房已结束，船台舾装码头已投入使用。

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Purification treatment should be effected by projects whose discharges prescribed standards, and which have already gone into operation, or been put to use;

已建成投入生产或者使用的超过排放标准的项目，应当进行净化处理；

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Months of planning has gone into the operation identifying prime targets for arrest teams.

BBC: NEWS | UK | England | Tees | Force mounts known offender blitz

In this case, the Position Limits Rule, which according to both parties is a significant and unprecedented change in the operation of the commodity derivatives market, has not yet gone into effect.

FORBES: Dramatic Federal Court Ruling Vacates CFTC Positions Limit Rule

This is what this data is supposed to monitor, but the well flow evidence would appear to have been ignored, because at this point the BP rig supervisors should have gone to a well kill operation and started to pump heavy mud back into the well bore to restore the primary control mechanism.

WSJ: The Oil Disaster Is About Human, Not System, Failure