Page 1 of 15 **Subpart SS —**  **Electrical Equipment Manufacture or Refurbishment**

The electrical equipment manufacturing or refurbishment category consists of processes that manufacture or refurbish
gas - insulated substations, circuit breakers, other switchgear,
gas - insulated lines, or power transformers (including gas

containing components of such equipment) containing sulfur

hexafluoride (SF § 98.450 Definition of the source category.

6 ) or perfluorocarbo ns (PFCs). The processes include equipment testing, installation, manufacturing, decommissioning and disposal, refurbishing, and storage in gas cylinders and other containers.

You must report GHG emissions under this subpart i f your facility contains an electrical equipment manufacturing or refurbishing process and the facility meets the requirements of §98.2(a)(1). Electrical equipment manufacturing and refurbishing facilities covered by this rule are those that have total ann ual purchases of SF § 98.451 Reporting threshold.

6 and PFCs that exceed 23,000 pounds.

(a) You must report SF § 98.452 GHGs to report.

6 and PFC emissions at the facility level. Annual emissions from the facility must include SF 6 and PFC emissions from equipment that is installed at an off

- site electric power transmission or distribution location whenever emissions from installation activities (e.g., filling) occurPage 2 of 15 before the title to the equipment is transferred to the electric power transmission or distribution entity. (b) You must rep ort CO 2 , N 2 O and CH 4 emissions from each stationary combustion unit. You must calculate and report these emissions under subpart C of this part (General Stationary Fuel Combustion Sources) by following the requirements of subpart C of this part.

(a) For each electrical equipment manufacturer or refurbisher, estimate the annual SF § 98.453 Ca lculating GHG emissions.

6 and PFC emissions using the

mass - balance approach in Equation SS

– 1 of this section:

where:
Decrease in SF 6 Inventory = (Pounds of SF 6 stored i n containers at the beginning of the year)

— (Pounds of SF 6 Acquisitions of SF stored in containers at the end of the year).
6 = (Pounds of SF 6 purchased from chemical producers or suppliers in bulk) + (Pounds of SF 6 returned by equipment users) + (Pounds of SF 6

Disbursements of SF returned to site after off

- site recycling).

6 = (Pounds of SF 6 contained in new equipment delivered to customers) + (Pounds of SF 6 delivered to equipment users in containers) + (Pounds of SF 6 returned to suppliers) + (Pounds of SF 6 s ent off site for recycling) + (Pounds of SF 6 sent off

- site for destruction).Page 3 of 15 (b) Use the mass

- balance method in paragraph (a) of this section to estimate emissions of PFCs associated with the manufacture or refurbishment of power transformers, substituting the relevant PFC(s) for SF 6 (c) Estimate the disbursements of SF6 or PFCs sent to customers in new equipment or cylinders or sent off

- site for other purposes including for recycling, for destruction or to be returned to suppliers using Equation SS

– 2 of this section: in Equation SS

– 1 of this section.

Where:

D GHG = The annual disbursement of SF6 or PFCs sent to customers in new equipment or cylinders or sent off

site for other purposes including for recycling, for destruction or to be returned to suppliers. Q p = The mass of the SF6 or PFCs charged into equipment or containers over the period p sent to customers or sent off

- site for other purposes including for recycling, for destruction or to be returned to suppliers.

n = The number of periods in t he year. (d) Estimate the mass of SF 6 or PFCs disbursed to customers in new equipment or cylinders over the period p by monitoring the mass flow of the SF 6 or PFCs into the new equipment or cylinders using a flowmeter , or by weighing containers before and after gas from containers is used to fill equipment or cylinders , or by using the nameplate capacity of the equipment
.Page 4 of 15 (e) If the mass of SF 6 or the PFC disbursed to customers in new equipment or cylinders over the period p is estimated by weighing contain ers before and after gas from containers is used to fill equipment or cylinders, estimate this quantity using Equation SS

– 3 of this section:

Where:
Q p = The mass of SF 6

M or the PFC charged into equipment or containers over the period p sent to customers or sent off

- site for other purposes including for recycling, for destruction or to be returned to suppliers.

B

M = The mass of the contents of the containers used to fill equipment or cylinders at the beginning of period p.

E

EL = The mass of SF = The mass of the contents of th e containers used to fill equipment or cylinders at the end of period p.

6

(f) If the mass of SF or the PFC emitted during the period p downstream of the containers used to fill equipment or cylinders and in cases where a flowmeter is used, downstream of the f lowmeter during the period p (e.g., emissions from hoses or other flow lines that connect the container to the equipment or cylinder that is being filled).

6 or the PFC disbursed to customers in new equipment or cylinders over the peri od p is determined using a flowmeter, estimate this quantity using Equation SS

– 4 of this section:

Where:Page 5 of 15
Q p = The mass of SF 6

M or the PFC charged into equipment or containers over the period p sent to customers or sent off

- site for other purposes including for recycling, for destruction or to be returned to suppliers.

mr = The mass of the SF 6
EL = The mass of SF or the PFC that has flowed through the flowmeter during the period p.

6

(g) Estimate the mass of SF or the PFC emitted during the period p downstream of the containers used to fill equipment or cylinders and in cases where a flowmeter is used, downstream of the flowmeter during the period p (e.g., emissions from hoses or other flow lines that connect the container to the equipment that is being filled).

6 or the PFC emitted during the period p downstream of the containers used to fill equipment or cylinders (e.g., emissions from hoses or other flow lines that connect the container to the equipment or cylinder that is being filled) using Equation SS

– 5 of this section:

Where:

E L = The mass of SF 6 or the PFC emitted during the period p downstream of the containers used to fill equipment or cylinders and in cases where a flowmeter is used, downstream of the flowmeter during the period p (e.g., emissions from hoses or other flow lines that connect the container to the equipment or cylinder that is being filled)
F Ci = The total number of fill operations over the period p for the valve

- hose combination Ci.
EF Ci = The emission factor for the valve

- hose combin ation Ci.

n = The number of different valve

- hose combinations C used during the period p.Page 6 of 15 (h) The If the mass of SF 6

(1) Determine the equipment's actual nameplate capacity, by

measur ing the nameplate capacities of a representative sample of each make and model and calculating the mean value for each make and model as specified at §98.454(f); or the PFC disbursed to customers in new equipment or cylinders over the period p must be is determined either by using the nameplate capac ity, or by using the nameplate capacity of the equipment or, in cases where and calculating the partial shipping charge, use the methods in either paragraph (h)(1) or (h)(2) of this section.

(2) If equipment is shipped with a partial charge, by calculating the partial shipping charge . Calculate calculate the partial shipping charge by multiplying the nameplate capacity of the equipment by the ratio of the densities of the partial charge to the full charge. To determine the equipment's actual nameplate capacity, you must measure the nam eplate capacities of a representative sample of each make and model and take the average for each make and model as specified at §98.454(f). (i) Estimate the annual SF 6 and PFC emissions from the equipment that is installed at an off

- site electric power tra nsmission or distribution location before the title to the equipment is transferred by using Equation SS

– 6 of this section:Page 7 of 15
Where:

EI = Total annual SF 6

MF = The total annual mass of the SF6 or PFCs, in pounds, used to fill equipment during equipment installation at electric transmission or distribution facilities
. or PFC emissions from equipment installation at electric transmission or distribution facilities.

MC = The total annual mass of the SF 6

NI = The total annual nameplate capacity of the equipment, in pounds, installed at electric transmission or distribution facilities. or PFCs, in pounds, used to charge the equipment prio r to leaving the electrical equipment manufacturer facility.

(a) For calendar year 2011 monitoring, you may follow the provisions of §98.3(d)(1) through (d)(2) for best available monitoring methods rather than follow the monitoring requirements of this section. For purposes of this subpart, any reference in §98.3(d)(1) through (d)(2 ) to 2010 means 2011, March 31 means June 30, and April 1 means July 1. Any reference to the effective date in §98.3(d)(1) through (d)(2) means February 28, 2011. § 98.454 Monitoring and QA/QC requirements.

(b) Ensure that all the quantities required by the equations of this subpart have been measur ed using either flowmeters with an accuracy and precision of ±1 percent of full scale or better or scales with an accuracy and precision of ±1 percent of the filled weight (gas plus tare) of the containersPage 8 of 15
of SF 6

(c) All flow meters, weigh scales, and combinations of volumetric and density measures that are used to measure or calculate quant ities under this subpart must be calibrated using calibration procedures specified by the flowmeter, scale, volumetric or density measure equipment manufacturer. Calibration must be performed prior to the first reporting year. After the initial calibration , recalibration must be performed at the minimum frequency specified by the manufacturer. or PFCs that are typically weighed on the s cale. For scales that are generally used to weigh cylinders containing 115 pounds of gas when full, this equates to ±1 percent of the sum of 115 pounds and approximately 120 pounds tare, or slightly more than ±2 pounds. Account for the tare weights of the containers. You may accept gas masses or weights provided by the gas supplier e.g., for the contents of cylinders containing new gas or for the heels remaining in cylinders returned to the gas supplier) if the supplier provides documentation verifying that accuracy standards are met; however, you remain responsible for the accuracy of these masses and weights under this subpart.

(d) For purposes of Equations SS

– 5 of this subpart, the emission factor for the valve

- hose combination (EF C ) must be estimated using measurements and/or engineering a ssessments or calculations based on chemical engineering principles or physical or chemical laws or properties. Such assessments orPage 9 of 15 calculations may be based on, as applicable, the internal volume of hose or line that is open to the atmosphere during coupl ing and decoupling activities, the internal pressure of the hose or line, the time the hose or line is open to the atmosphere during coupling and decoupling activities, the frequency with which the hose or line is purged and the flow rate during purges. Yo u must develop a value for EF c (or use an industry

- developed value) for each combination of hose and valve fitting, to use in Equation SS

– 5 of this subpart. The value for EF C

(e) Electrical equipment manufacturers and refurbishers must account for SF must be determined for each combination of hose and valve fitting of a given diameter or size. The calculation must be recalculated annually to account for changes to the specifications of the valves or hoses that may occur throughout the year.

6 or PFC emis sions that occur as a result of unexpected events or accidental losses, such as a malfunctioning hose or leak in the flow line, during the filling of equipment or containers for disbursement by including these losses in the estimated mass of SF 6

(f) If the mass of SF or the PFC emitted downstream of the container or flowmeter during the period p.

6 or the PFC disbursed to customers in new equipment over the period p is determined by assuming that it is equal to the equipment's nameplate capacity or, in cases where equipment is shipped with a partial charge, equal to itsPage 10 of 15 partial shipping charge, equipment samples for conducting the nameplate capacity tests must be selected using the following stratified sampling strategy in this paragraph. For each make and mo del, group the measurement conditions to reflect predictable variability in the facility's filling practices and conditions (e.g., temperatures at which equipment is filled). Then, independently select equipment samples at random from each make and model u nder each group of conditions. To account for variability, a certain number of these measurements must be performed to develop a robust and representative average nameplate capacity (or shipping charge) for each make, model, and group of conditions. A Stud ent T distribution calculation should be conducted to determine how many samples are needed for each make, model, and group of conditions as a function of the relative standard deviation of the sample measurements. To determine a sufficiently precise estim ate of the nameplate capacity, the number of measurements required must be calculated to achieve a precision of one percent of the true mean, using a 95 percent confidence interval. To estimate the nameplate capacity for a given make and model, you must us e the lowest mean value among the different groups of conditions, or provide justification for the use of a different mean value for the group of conditions that represents the typical practices and conditions for that make and model. Measurements can bePage 11 of 15

c onducted using SF 6

(g) Ensure the following QA/QC methods are employed t hroughout the year: , another gas, or a liquid. Re

- measurement of nameplate capacities should be conducted every five years to reflect cumulative changes in manufacturing methods and conditions over time.

(1) Procedures are in place and followed to track and weigh all cylinders or other containers at the beginning and end of the year. (h) You must adhere to the following QA/QC methods for reviewing the completeness and accuracy of report ing: (1) Review inputs to Equation SS

– 1 of this subpart to ensure inputs and outputs to the company's system are included. (2) Do not enter negative inputs and confirm that negative emissions are not calculated. However, the decrease in SF 6
(3) Ensure that beginning

- of

- year inventory matches end

- of

year inventory from the previous year. inventory may b e calculated as negative.

(4) Ensure that in addition to SF 6 purchased from bulk gas distributors, SF 6 returned from equipment users with or inside equipment and SF 6 returned from off

- site recycling are also accounted for among the total additions. § 98.455 Procedures for estimating missing data.Page 12 of 15 A complete record of all measured parameters used in the GHG emissions calculations is required. Replace missing dat a, if needed, based on data from similar manufacturing operations, and from similar equipment testing and decommissioning activities for which data are available.

In addition to the information required by §98.3(c), ea ch annual report must contain the following information for each chemical at the facility level: § 98.456 Data reporting requirements.

(a) Pounds of SF 6

(b) Pounds of SF and PFCs stored in containers at the beginning of the year.

6

(c) Pound s of SF and PFCs stored in containers at the end of the year.

6 (d) Pounds of SF and PFCs purchased in bulk.

6

(e) Pounds of SF and PFCs returned by equipment users with or inside equipment.

6

(f) Pounds of SF and PFCs returned to site from off site after recycling.

6

(g) Pounds of SF and PFCs inside new equipment delivered to customers.

6

(h) Pounds of SF and PFCs delivered to equipment users in containers.

6 (i) Pounds of SF and PFCs returned to suppliers.

6 and PFCs sent off site for destruction.Page 13 of 15 (j) Pounds of SF 6 (k) The na meplate capacity of the equipment, in pounds, delivered to customers with SF and PFCs sent off site to be recycled.

6
(l) A description of the engineering methods and calculations used to determine emissions from ho ses or other flow lines that connect the container to the equipment that is being filled. or PFCs inside, if different from the quantity in paragraph (f) of this section.

(m) The values for EF ci of Equation SS

- 5 of this subpart

(n) The total number of fill operations for each hose and valve combination, or, F for each hose and valve combination and the associated valve fitting sizes and hose diameters.

Ci (o) The mean value for each make, model, and group of conditions if If the mass of SF of Equation SS

– 5 of this subpart.

6

(p) If the mass of SF or the PFC disbursed to customers in new equipment over the perio d p is determined by assuming that it is equal according to the equipment's methods required in §98. 45 3(h) of this subpart, report the mean value of nameplate capacity or, in cases where in pounds for each make, model, and group of conditions.

6 or the PFC disbursed to customers in

new equipment is shipped with a partial charge, equal to its partial shipping charge.Page 14 of 15 (p) The over the period p is determined according to the methods required in §98. 45 3(h) of this subpart, report the number of samples and the upper and lower bounds on the 95 percent confidence interval for each make, model, and group of conditions if the mass of SF 6

(q) Pounds of SF or the PFC disbursed to customers in new equipment over the period p is determined by assuming that it is equal to the equipment's nameplate capacity or, in cases where equipment is shipped with a partial charge, equal to its partial shipping charge.
.
6 and PFCs used to fill equipment at off

site electric power transmission or distribution location s, or M F (r) Pounds of SF , of Equation SS

– 6 of this subpart.

6 and PFCs used to charge the equipment prior to leaving the electrical equipment manufacturer or refurbishment facility, or M C (s) The nameplate capacity of the equipment, in pounds, installed at off

- site electric power transmission or distribution locations used to determine emissions from installation, or N , of Equation SS

– 6 of this subpart.

I (t) For any missing data, you must report the reason the data were mis sing, the parameters for which the data were missing, the substitute parameters used to estimate emissions in their absence, and the quantity of emissions thereby estimated. , of Equation SS

– 6 of this subpart.

§ 98.457 Records that must be retained.Page 15 of 15 In addition to the information required by §98.3(g), you must retain the following records: (a) All information reported and listed in §98.456. (b) Accuracy certifications and calibration records for all scales and monitoring equipment, including the method or manufacturer's specification used for calibration. (c) Certifications of the quantity of gas, in pounds, charged into equipment at the electrical equipment manufacturer or refurbishment facility as well as the actual quantity of gas, in pounds, charged into equipment at installation. (d) Chec k

- out and weigh

- in sheets and procedures for cylinders. (e) Residual gas amounts, in pounds, in cylinders sent back to suppliers. (f) Invoices for gas purchases and sales. (g) GHG Monitoring Plans, as described in §98.3(g)(5), must be completed by April 1, 2011.

All terms used in this subpart have the same meaning given in the CAA and subpart A of this part. § 98.458 Definitions.