توضیحات :
NFPA 8502 – Standard for the Prevention of Furnace Explosions/Implosions in Multiple Burner Boilers
۱۹۹۹ Edition
Chapter 1 Introduction
۱-۱ Scope.
۱-۱-۱ This standard shall apply to boilers with a fuel input rating of 12,500,000 Btu/hr (3663 kW) or greater. This standard shall apply to multiple burner boilers firing one or more of the following:
(a) Fuel gas, as defined in Chapter 3
(b) Fuel oil, as defined in Chapter 3
(c) Pulverized coal, as defined in Chapter 3
۱-۱-۲ This standard includes simultaneous firing of more than one fuel.
۱-۱-۳* This standard is not retroactive. This standard shall apply to new installations and to major alterations or extensions that are contracted subsequent to the effective date of this standard.
۱-۱-۴ Furnaces such as those of process heaters used in chemical and petroleum manufacture, wherein steam generation is incidental to the operation of a processing system, are not covered by this standard.
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