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ISA 77.42.01 : 1999

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

FOSSIL FUEL POWER PLANT FEEDWATER CONTROL SYSTEM - DRUM TYPE

Available format(s)

PDF

Language(s)

English

Published date

01-01-1999

Superseded date

19-03-2021

1 Scope
2 Purpose
3 Definitions
4 Minimum design requirements for a feedwater control system
  4.1 Process measurement requirements
  4.2 Control and logic requirements
  4.3 Final control device requirements
  4.4 System reliability and availability
  4.5 Minimum alarm requirements
  4.6 Operator interface
Annex A - Reference
Annex B - Feedwater control

The standard is intended to assist in the development of design specifications covering the measurement and control of feedwater systems in boilers with steaming capacities of 200,000 lb/h (25 kg/s) or greater.

Committee
SP77
DevelopmentNote
Supersedes ISA S77.42-1987 Formerly it was ISA-S77.42.01 (05/2001)
DocumentType
Standard
ISBN
1-55617-717-8
Pages
34
ProductNote
Reconfirmed 1999
PublisherName
International Society of Automation
Status
Superseded
SupersededBy

ISA 5.4 : 1991 INSTRUMENT LOOP DIAGRAMS
IEEE/ASTM SI_10-2010 American National Standard for Metric Practice
API 556 : 2011 INSTRUMENTATION, CONTROL, AND PROTECTIVE SYSTEMS FOR GAS FIRED HEATERS
ISA 51.1 : 1979 PROCESS INSTRUMENTATION TERMINOLOGY
ISA 5.1 : 1984 INSTRUMENTATION SYMBOLS AND IDENTIFICATION