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Document ID (ISN)38816
CIS number 82-1823
Year 1980
Convention or series no. ANSI/NFPA 85G-1980
Title Prevention of furnace implosions in multiple burner boiler-furnaces
Bibliographic information National Fire Protection Association, Batterymarch Park, Quincy, MA 02269, USA, 1980. 18p. Illus. Price: US-$5.00.
Abstract This standard, adopted as an American National Standard 28 July 1980, establishes minimum standards for the design, installation and operation of boiler-furnaces, their fuel burning, air supply and combustion products removal systems, which include induced-draught fans and related control equipment, to prevent furnace implosions. It offers 2 methods for minimising the risk of negative furnace draught in excess of furnace structural capability: design of the furnace and flue gas removal system so that the low gas flow maximum head capability of the induced-draught fan system with ambient air does not exceed the design pressure of furnace ducts and associated equipment; or provision of a furnace pressure control system, draught fan directional blocking, or run-backs. Contents: equipment requirements (furnace structural design; combustion products removal; furnace pressure control system); sequence of operations; functional and system requirements for interlock and alarm systems.
Descriptors (primary) USA; negative pressure; fire protection; implosion; fuel burning equipment
Descriptors (secondary) fans; ducts; ash and slag removal equipment; standard; ventilation design; fire prevention; pressure control
Document type F - Information notes, codes of practice, standards
Subject(s) Fire and explosions
Broad subject area(s)
Browse category(ies) Fires
Hypobaric pressure