The document describes measures for reduction of the effort of the feed pump by changing the pump speed.
VDI/VDE 3506 Blatt 2-1997 Referenced Document
DIN 19227 Control technology; graphical symbols and identifying letters for process control engineering; representation of details
DIN 2481:1979 Thermal Power Plants; Graphical Symbols
ISO 3511-3:1984 Process measurement control functions and instrumentation; Symbolic representation; Part 3 : Detailed symbols for instrument interconnection diagrams
VDI/VDE 3500-1996 Limiting controls in fossil fired steam power stations
VDI/VDE 3501-1962 Dampferzeuger-Regelung; Brennstoff- und Verbrennungsluft-Regelung
VDI/VDE 3502-1996 Drum level control in fossil fired steam power stations
VDI/VDE 3503-1996 Steam temperature control in fossil fired steam power stations
1997VDI/VDE 3506 Blatt 2-1997 Measures to reduce effort of the feed pump by changing the pump speed for boilers in fossil fired steam power stations
1996VDI/VDE 3506 Blatt 2-1996 Massnahmen zur Verminderung der Speisepumpenarbeit durch Aenderung der Pumpendrehzahl fuer Dampferzeuger in konventionellen Dampfkraftwerken
1968VDI/VDE 3506 Blatt 2-1968 Steam generator control; feed-water control for continuous steam generators; recommendations for ordering