Search results
Results from the WOW.Com Content Network
Variable Speed Fire Pump Controllers were invented and released with a UL Listing for fire pump service in 2003 by Master Control Systems, Inc. [1] [2] Paragraph 10.5.5 in the 2003 edition of NFPA-20 recognized Variable Speed as an accepted method for operating the fire pump. Then in the NFPA-20 2007 edition, section 10.10 was added to clarify ...
ISO 13849 is a safety standard which applies to parts of machinery control systems that are assigned to providing safety functions (called safety-related parts of a control system). [1] The standard is one of a group of sector-specific functional safety standards that were created to tailor the generic system reliability approaches, e.g., IEC ...
An industrial control system (ICS) is an electronic control system and associated instrumentation used for industrial process control. Control systems can range in size from a few modular panel-mounted controllers to large interconnected and interactive distributed control systems (DCSs) with many thousands of field connections.
LCR – local control room; LCV – level control valve; L/D – lay down (such as tubing or rods) LD – lay down (such as tubing or rods) LDAR – leak detection and repair; LDHI – low-dosage hydrate inhibitor; LDL – litho density log; LDS – leak detection system (pipeline monitoring) LDTEP – LDT EPT gamma ray log; LEAKL – leak ...
A control panel is a flat, often vertical, area where control or monitoring instruments are displayed or it is an enclosed unit that is the part of a system [1] that users can access, such as the control panel of a security system (also called control unit).
1. Ketogenic Diet. Cancer cells rely on glucose for energy to grow. The ketogenic diet is a way to provide an alternative energy source to normal cells in the dog's body while starving the cancer ...
The North American Aerospace Defense Command is preparing for its traditional tracking of Santa Claus' sleigh on Christmas Eve.. NORAD has tracked the Dec. 24 flight since 1955, when a child ...
For air-operated control valves, electrical signals from the control system are converted to an air pressure for the valve actuator in a current/pneumatic I/P converter. Upon loss of pneumatic or hydraulic pressure valves may fail to an open (FO) or fail to a closed (FC) position. Some instrumentation is self actuating.