其中一个公司是Flexlife，它制造的设备用来检查和维修把海底油井和海面钻台连接起来的管线的故障。
One such is Flexlife, which makes equipment to detect and repair faults on the pipelines that connect undersea wells to floating platforms.
当管线内压力降到大气压力时，打开收球筒，检查清管或测径效果。
When the line pressure to atmospheric pressure, open the ball tube, check pigging or caliper effect.
清洗：检查或更换磨损的阀门阀瓣，断开控制管线，采用钝工具和锤打阀盖凸耳从阀体上旋下阀盖。
To CLEAN: Inspect or replace worn valve disc, disconnect control pipe and unscrew bonnet from valve body using blunt tool and hammer on bonnet lugs.
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