§ 60.6550 How do I monitor the load of my municipal waste combustor?

(a) If your municipal waste combustor generates steam, you must install, calibrate, maintain, and operate a steam flowmeter or a feed water flowmeter and meet all the following five requirements: (1) Continuously measure and record the measurements of steam (or feed water) flow in kilograms (or pounds) per hour. (2) Calculate your steam (or feed water) flow in 4-hour block arithmetic averages. (3) Calculate the steam (or feed water) flow rate using the method in “American Society of Mechanical Engineers Power Test Codes: Test Code for Steam Generating Units, Power Test Code 4.1—1964 (R1991),” section 4 (incorporated by reference, see § 60.17 of subpart A of this part). (4) Design, construct, install, calibrate, and use nozzles or orifices for flow rate measurements, using the recommendations in “American Society of Mechanical Engineers Interim Supplement 19.5 on Instruments and Apparatus: Application, part II of Fluid Meters,” 6th Edition (1971), chapter 4 (incorporated by reference, see § 60.17 of subpart A of this part). (5) Before each dioxins/furans performance stack test, or at least once a year, calibrate all signal conversion elements associated with steam (or feed water) flow measurements according to the manufacturer instructions. Measurement devices such as flow nozzles and orifices are not required to be recalibrated after they are installed. (b) Determine the maximum demonstrated municipal waste combustor load during the initial performance test for dioxins/furans and each subsequent performance test specified in § 60.6525 during which you achieve compliance with the dioxins/furans emission limit in Table 3 to Subpart WWWW. The maximum demonstrated municipal waste combustor load is the highest 4-hour arithmetic average load achieved during four consecutive hours during the most recent test. If a subsequent dioxins/furans performance test is being performed on only one municipal waste combustor as specified in § 60.6535, you may apply the same maximum municipal waste combustor load from the tested facility for all the similarly designed and operated municipal waste combustors.