{longname} Q80. If the HHV is known as part of a general energy management system, but not sampled on a routine basis, may Tier 1 be used?
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A80. If the HHV is not sampled at the minimum frequency required for Tier 2 (see §98.34(a)), as part of your routine operations, Tier 1 may be used if yourfor units are {html}≤ {html}250 mmBtu/hr andthat meet the fuelrequirements is listed in Table C-1. However, ifof §98.34(b)(1)\(i) through §98.34(b)(1)(vii). If HHV data are obtained at the minimum required frequency or if the capacity of your units is greater than 250 mmBtu/hr, then either Tier 2 must be used, or you may opt to use Tier 3 or 4, except that Tier 1 may be used for +certain fuel types regardless of the unit size, and, for other +specific units of any size+ regardless of the fuel type+. (See, §§98§98.33(b)(1), and 98§98.34(a).)

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Source: This question and answer was derived from a Legacy FAQ, revised by M. Hannan, 1/23/2013

Approval / Publishing History: Version 12

Expiration : none

Relevant Subparts: Subpart C
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