دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a warning device triggered by the presence of abnormal conditions in a machine or system. For example, a lowwater alarm automatically signals when the water level in a vessel falls below its preset minimum. Offshore, alarms are used to warn personnel of dangerous or unusual conditions, such as fires and escaping gases.

preset value of a monitored parameter at which an alarm is actuated to warn of a condition that requires corrective action.

n: the special tools used to display ,record or alarm the character and parameter about the drilling such as weight pen,eight-pen recorder for drilling

n: the instrument used to disply,record and alarm the running state

n: the alarm not for dangerous state

n: one of a series of devices that continuously monitor the level of the drilling mud in the mud tanks. The indicator usually consists of float devices in the mud tanks that sense the mud level and transmit data to a recording and alarm device (a pit-volume recorder) mounted near the drillers position on the rig floor. If the mud level drops too low or rises too high, the alarm sounds to warn the driller of lost circulation or a kick.

n: a kids of device that constinuously monitors the the change of mud pool fluid surface.

portable measurement, alarm and control system.

n: an auxiliary set of controls for operating the blowout preventers. remote terminal unit (RTU) n: that part of an automated lease that relays signals from the central computer to the end de- vices and relays status and alarm conditions from the end devices to the computer.

n: a device on an instrument control panel that indicates the cause of a system shutdown or alarm signal.