N.M. Code R. § 20.11.46.22 Protocol Web 2: Predictive Flow Monitoring Systems For Kilns With Positive Pressure Fabric Filter

• Library: New Mexico Administrative Code
• Edition: 2023
• Currency: Current through Register Vol. 34, No. 24, December 19, 2023
• Citation: N.M. Code R. § 20.11.46.22
• Year: 2023

A. Applicability. The provisions of this protocol are applicable to cement kilns or lime kilns that:

(1) are controlled by a positive pressure fabric filter;

(2) combust only a single fuel, no fuel blends; and

(3) have operating conditions upstream of the fabric filter that the WEB source documents would reasonably prevent reliable flow monitor measurements; and this protocol does not modify the SO2 monitoring requirements in 20.11.46.16 NMAC.

B. Monitoring requirements.

(1) A cement or lime kiln with a positive pressure fabric filter shall use a predictive flow monitoring system (PFMS) to determine the hourly kiln exhaust gas flow.

(2) A PFMS is the total equipment necessary for the determination of exhaust gas flow using process or control device operating parameter measurements and a conversion equation, a graph, or computer program to produce results in cubic feet per hour.

(3) The PFMS shall meet the following performance specifications: (a) sensor readings and conversion of sensor data to flow in cubic feet per hour must be automated; (b) the PFMS must allow for the automatic or manual determination of failed monitors; and at a minimum a daily determination must be performed; (c) the PFMS shall have provisions to check the calibration error of each parameter that is individually measured; the owner or operator shall propose appropriate performance specifications in the initial monitoring plan for all parameters used in the PFMS comparable to the degree of accuracy required for other monitoring systems used to comply with 20.11.46 NMAC; the parameters shall be tested at two levels, low: 0 to 20 percent of full scale, and high: 50 to 100 percent of full scale; and the reference value need not be certified; (d) the relative accuracy of the PFMS must be less than or equal to 10.0 percent of the reference method average value, and include a bias test in accordance with Paragraph (3) of Subsection D of 20.11.46.22 NMAC.

C. Certification requirements. The PFMS is subject to initial certification testing. The source owner or operator shall:

(1) demonstrate the ability of the PFMS to identify automatically or manually a failed monitor;

(2) provide evidence of calibration testing of all monitoring equipment; and any tests...