Uptime is Not Enough - Identifying New Ways to Improve Deep Water Productivity – (PPT)

摘要

How does Wikipedia define it? 1. "Downtime, or outage duration, refers to a period of time that a system fails to provide or perform its primary function." 2. Uptime is the opposite of downtime. How does the industry define it? 1. No clear definition of "downtime" from API, ISO or IMCA. 2. Planned maintenance and certain repairs often excluded. 3. Some calculations do not have a consistent time period. 4. NORSOK Std. U102, Section 5.5.2 states: "Any downtime in excess of [allowed maintenance times] shall be considered as breakdown." Is this a useful metric for efficiency?