Kendal Power Station Units No. 2 & 6 Particulate Emission Monitor Correlations. 30th September 2016 Report No. RSL224

Transcription

1 Kendal Power Station Units No. 2 & 6 Particulate Emission Monitor Correlations 30th September 2016 Report No. RSL224

2 P.O. Box 2459 Noordheuwel ext 4 Krugersdorp 1756 Vat No Chisel Street Boltonia Krugersdorp 1739 Tel: +27 (011) Tel: +27 (011) Fax:+27 (086) Eskom Kendal Power Station Kendal Power Station Private Bag X7272 Witbank 1035 Attention: Angi Motlatla Tel: Cell: Date Order No. Report No. Enquiries 30th September 2016 PO: & RSL224 Tel: Cell: pieter@stacklabs.co.za Report No.: RSL224 Kendal Power Station Units No. 2 & 6 Particulate Emission Monitor Correlations August & September 2016 Madam Herewith the finalised report for the particulate emission monitor correlations conducted on Unit No. 2 & 6 at Kendal Power Station from 30 th of August to the 10 th of September We thank you for the opportunity to be of service. We trust that your requirements were interpreted correctly. Should you however have any queries, please contact us at the above numbers, we will gladly assist. PH Pretorius Stacklabs ISO 9096, & STACKLABS ISO #:825268/: ISO 2003

3 Source Information Source Location: Kendal Power Station Private Bag X7272 Witbank 1035 Permit No. TBA Contact: Angi Motlatla Title: Senior Technician Telephone: Tel: Listed Activity Category: 1.1 Solid Combustion Installation Survey Date: 30 th August to 10 th September 2016 Pollutants: Total Particulate Matter (TPM) Negotiated Limit: 200 mg/nm 3 dry 10% O 2 Method: ISO 9096, & Plant: Unit No. 2 Measured Concentration: 15.4 to 42.3 mg/nm 3 dry 10 % O 2 Compliance: Yes 9 of 9 Measurements Plant: Unit No. 6 Measured Concentration: 27.2 to mg/nm 3 dry 10 % O 2 Compliance: Yes 10 of 10 Measurements Testing Laboratory Laboratory: Stacklabs 10 Chisel Street Boltonia Krugersdorp 1739 Contact: Mr PH Pretorius Title: Managing Member Telephone: (011) Facsimile: E Mail: pieter@stacklabs.co.za II

4 Report No. RSL224 Title: Kendal Units No. 2 & 6 Particulate Emission Monitor Correlation 30 th Aug to 10 th Sep 2016 Reference Revision RSL224 0 Date 2016/09/30 Revision Date n/a Compiled by Functional representative Authorised by..... WJ Bronkhorst P Buell PH Pretorius Team Leader Quality Representative Managing Member Review and Certification All work, activities and tasks performed for this report were carried out under my supervision. All work was conducted in compliance with listed standards I have reviewed the details, calculations, results, conclusions and all written material contained within this report, and hereby certify that the presented material is authentic and accurate. Name: PH Pretorius Title: Managing Member 30 th September 2016 Sign: Date: III

5 Table of Contents Section Source Information... Review and Certification... Report Summary... Page II III V 1. Monitoring Objective Plant Description and General Operating Procedures Methods and procedures Results Discussion Monitor Deviations Recommendations Acknowledgements References Distribution Appendix No. 1...Detailed Measurement Results 14 Appendix No. 2...Plant parameters 22 Appendix No. 3...Correlations Graphs 27 Appendix No. 4...Water Vapour Concentration Calculation 32 Appendix No Outlines of Procedures 34 Appendix No TPM Monitor Output Trends 37 Appendix No. 7...Particulate Emission Monitor Calibration Certificate 42 Appendix No Filter Mass Sheets 52 Appendix No Calibration Certificates 59 IV

6 REPORT SUMMARY In order to meet the requirements of the South African Air Quality Act No. 39 of 2004 (Reference 9.1), all Solid Fuel Combustion Installations (Category 1.1) such as Kendal Power Station, are obligated to monitor several listed pollutants during operation. These pollutants include particulate matter, Sulphur Dioxide and Oxides of Nitrogen. The Act further specifies that all particulate monitoring programs are required to meet international standards such as ISO 9096 & (Reference 9.2 & 9.3) and therewith ISO (Reference 9.4). To this end and in keeping with the ESKOM Standard for Emission Monitoring and Reporting ( ) (Reference 9.5) Eskom s Kendal Power Station scheduled particulate emission monitor correlations on Units No. 2 & 6. The risks areas included Units No. 2 & 6 s electrostatic precipitators and the pollutant considered was particulate matter (particulate emission monitors correlations). Continuous particulate emission monitors generally operate on a principle of passing a light beam through a dust-laden gas stream. The dust concentration is then determined by measuring the degree of light attenuation resulting from the dust within the gas stream. However the degree of light attenuation is dependent on more than just the quantity of dust. Dust characteristics such as colour, size, shape and distribution of the dust within a duct, will all impact on the amount of light that is attenuated. In addition, these characteristics will change over time as the plant s electrostatic precipitator or bag filters performances change. In order to compensate for these characteristic changes and to facilitate the determination of mass emissions from the light attenuation, a correlation of light attenuation and measured mass emissions must be conducted at regular intervals. The correlation of the light attenuation and mass emission requires the determination of the actual mass emission emitted from a particular plant by means of isokinetic or Gravimetric dust sampling. This procedure must be conducted over a range of plant operating conditions representative of the plant s general operating conditions and is referred to as a particulate emission monitor correlation or a dynamic calibration. Stacklabs, an environmental testing laboratory, was contracted by Eskom Kendal Power Station to complete the required particulate emission monitor correlations on Units No. 2 & 6. The required site measurements were carried out from the 30 th of August to the 10 th of September The relevant results and correlation graphs have been presented in this report and may be summarised as follows: V

7 Results Summary Unit No. 2 Particulate Emission Monitor Correlation Equations Kendal Power Station Unit No. 2 September 2016 Correlations Issued Date Function Correlation *MME Monitor Output mg/nm 3 10% O yyyy/mm/dd 2 mg/nm 3 (d) Range Coefficient No. = m * (ma or %CH) + 10% O 2 OD /09/ * ma to /09/ * %CH to 1.6 Unit No. 2 Air flow to gas flow correlation Output No. Kendal Power Station Unit No. 2 September 2016 Correlations Issued Date Function Correlation *MMGF Monitor Nm 3 /s 10% O yyyy/mm/dd 2 Nm 3 /s (d) Range Coefficient = m * kg/s Air Flow + 10% O * Air Flow (kg/s) n/a n/a 2016/09/30 *MMGF: Maximum Measured Gas Flow during correlation period Unit No. 6 Particulate Emission Monitor Correlation Equations Kendal Power Station Unit No. 6 September 2016 Correlations Issued Date Function Correlation *MME Monitor Output mg/nm 3 10% O yyyy/mm/dd 2 mg/nm 3 (d) Range Coefficient No. = m * (ma or %CH) + 10% O 2 OD /09/ * ma to /09/ * %CH to 1.6 Unit No. 6 Air flow to gas flow correlation Output No. Kendal Power Station Unit No. 6 September 2016 Correlations Issued Date Function Correlation *MMGF Monitor yyyy/mm/dd n/a 2016/09/30 Nm 3 /s 10% O 2 = m * kg/s Air Flow + c * Air Flow (kg/s) Gas Flow reported as Nm 3 / s Dry corrected to 10% O 2 *MMGF: Maximum Measured Gas Flow during correlation period Coefficient Nm 3 /s 10% O 2 Range n/a VI

8 Report Recommendations It is recommended that: The particulate emissions from Units No. 2 & 6 reported to the authorities are according to the correlation function presented in Figures No. 1 & 2 of this report. New compliant correlations are conducted on Unit No. 2 & 6 during the third quarter of VII

9 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 1 of Monitoring Objective The primary objective of the particulate emission monitor correlations presented in this report is to quantify the concentrations of the particulate matter released into the atmosphere during the operations of Units No. 2 & 6 at Kendal Power Station. The requirement for conducting the particulate emission monitor correlations is to demonstrate compliance with the requirements of the National Environmental Management: Air Quality Act (39/2004), Listed Activities and Associated Minimum Emission Standards in terms of Section 21, Category 1.1. The substance applicable under Category 1.1 is Particulate Matter which is capped at 100 mg/nm 3 10% O 2. This cap limit however, in the case of Kendal Power Station, was negotiated to 200 mg/nm 3 10% O Plant Description & General Operating Procedure 2.1. The pulverised fuel steam generating boilers on which the particulate emission monitor correlations were conducted were originally designed for a maximum steam flow equivalent to 697MW. These boilers were each equipped with two parallel electrostatic precipitators with a design capacity of 1070 Am 3 /s gas flow and a performance collecting efficiency of greater than 99.93%. The electrostatic precipitators were later retro-fitted with sulphur trioxide flue gas conditioning. Electrostatic Precipitator Design Data for Unit under Test (Original Design) 97 % MCR Number of ESPs in use 2 Gas Volume Flow Rate Worst Coal 1250 m 3 /s Gas Temperature 128 C Inlet Dust Burden 22.6 g/nm 3 Outlet Dust Burden 50 mg/nm 3 Carbon in Dust 1.6% Sulphur in Coal 1.2% Pressure Drop 0.23Kpa Temperature Drop 4 C 2.2. During the correlations, the particulate emission measurements were conducted through purpose built ports situated on the various Units stacks at a level approximately 180m above ground level. For a diagrammatic representation of the test positions, see the following sketch. Measurements were conducted along sections Q Q.

10 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 2 of The operating regime followed during the correlation periods included all significant activities that arise during normal production as well as some fault conditions. The correlation included measurements at the following Boiler Loads: Measurement No. Unit No. 2 Unit No. 6 Load (MW) Load (MW) * *Measurement No. 8 on Unit No. 6 was not completed due to an unexpected unit shutdown. A total of 9 measurements were completed on Unit No. 2. For additional information of the plant parameters please see Appendix No Methods & Procedures The method selected for the determination of the particulate emission concentrations on Units No. 2 & 6 was in compliance with ISO 9096 Stationary source emission Manual Determination of mass concentration of particulate matter. This general method can be briefly described as follows: A sharp-edged nozzle is positioned in the duct facing into the moving gas stream and a sample flow of the gas is extracted isokinetically for a measured period of time. To allow for nonuniformity of the distribution of particulate concentration in the duct, samples are taken at a pre-selected number of stated positions in the duct cross-section. The particulate matter entrapped in the gas sample is separated by a filter medium, then dried and weighed. The particulate concentration is calculated from the weighed particulate mass and the gas sample volume. The particulate mass flow rate is calculated from the particulate concentration and the duct gas volumetric flow rate. The particulate mass flow rate can also be calculated from the weighed particulate matter, the sample time, the area of the sample plane and the nozzle opening. The degree to which this sample represents the total gas flow depends on Homogeneity of the gas velocity within the sampling plane; A sufficient number of sampling points in the sampling plane; Isokinetic withdrawal of the plane As stated above, the gas has to be sampled at more than one sampling point in the sampling plane, dependant on the sampling plane area. This plane is normally divided into equal areas, at the centres of which gas is withdrawn. To determine the particle concentration in the plane, the nozzle is moved from one sampling point to the other, extracting gas isokinetically at each point. Sampling periods should be equal for each sampling point, resulting in a composite

11 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 3 of 62 sample. If equal sampling areas cannot be chosen, the sampling period shall be proportional to the sampling area. The sample is extracted through a sampling train, which principally consists of: A sampling probe tube with entry nozzle; A particle separator; A gas metering system, in-stack or external; A suction system The particle separator and / or the gas metering system may be located either in the duct, or placed outside the duct. It is necessary to avoid condensation of vapour in the sampling train during gas sampling, because it will interfere with particle separation, particulate condition and flow measurements. To this end, the probe tube, the particle separator and the gas flow-measuring device may be heated above the relevant dew point where necessary. The water vapour may intentionally be removed downstream of the particle separator, to make use of a dry gas meter for the measurement of sampled gas volume. For isokinetic sampling, the gas velocity at the sampling point in the duct has to be measured, and the corresponding sample gas flow has to be calculated and adjusted. Normally a Pitot static tube is used for the measurement of duct gas velocity. If the sample gas flow-measuring device is used within the duct, the relationship between the measured pressure drop and the pitot static tube differential pressure is simple, facilitating the adjustment to isokinetic conditions. If the gas meter device is situated outside the duct, the calculation of the isokinetic sample gas flow rate is more complicated. The calculation may also include the duct gas density under standard conditions (which may be derived from the dry gas composition and the moisture content), the temperature, static pressure of the gas in the duct, the gas meter device, and the water vapour content of the duct gas, if the sample gas flow is measured after water removal. After sampling, the collected particulate matter is completely recovered, dried and weighed and the concentrations are determined. All Stacklabs isokinetic sampling is carried out employing procedures and equipment that comply with the requirements of ISO (Reference 1). All Stacklabs sampling equipment is calibrated by SANAS accredited laboratories. Kendal personnel were responsible for the setting of the plant prior to the test period. Stacklabs was contracted to provide the service of particulate emission monitors correlation through isokinetic dust sampling only. The broad outlines of filter weighing, pre-test preparations, sampling system integrity checks and sampling procedures are discussed in Appendix No 5.

12 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 4 of Results 4.1. Unit No. 2 The following table presents the results of the particulate emission monitor s indications from Output No. 1 as well as the measured particulate emissions in mg/nm 3 10% O 2. The measurements listed below were all included in the final correlations for Unit No. 2. Monitor Output (0 to 1.6 OD) Output No. 1 Monitor Output (0 to 1.6 OD) Output No Correlation Measured Dust Mass Test No. ma %CH mg/nm 3 10% O Average Max Min All particulate emissions reported as mg/nm 3 Dry corrected to 10% O 2. The final correlation includes three zero points as described in ISO Unit No. 2 Particulate Emission Monitor Correlation Equations Kendal Power Station Unit No. 2 September 2016 Correlations Issued Date Function Correlation *MME Monitor Output mg/nm 3 10% O yyyy/mm/dd 2 mg/nm 3 (d) Range Coefficient No. = m * (ma or %CH) + 10% O 2 OD /09/ * ma to /09/ * %CH to 1.6

13 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 5 of 62 Unit No. 2 Air flow to gas flow correlation The following table presents the results of the plant recorded total Air Flow indication (k/s) as well as the measured Gas Flow results (Nm 3 10% O 2 ). Recorded Total Air Flow Measured Gas Flow Test No. kg/s Nm 3 10% O Average Max Min Gas Flow reported as Nm 3 / s Dry corrected to 10% O 2 Output No. Kendal Power Station Unit No. 2 September 2016 Correlations Issued Date Function Correlation *MMGF Monitor yyyy/mm/dd n/a 2016/09/30 Nm 3 /s 10% O 2 = m * kg/s Air Flow + c * Air Flow (kg/s) Gas Flow reported as Nm 3 / s Dry corrected to 10% O 2 *MMGF: Maximum Measured Gas Flow during correlation period Coefficient Nm 3 /s 10% O 2 Range n/a

14 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 6 of Unit No. 6 The following table presents the results of the particulate emission monitor s indications from Output No. 1 as well as the measured particulate emissions in mg/nm 3 10% O2. The measurements listed below were all included in the final correlations for Unit No. 6. Monitor Output (0 to 1.6 OD) Output No. 1 Monitor Output (0 to 1.6 OD) Output No Correlation Measured Dust Mass Test No. ma %CH mg/nm 3 10% O Average Max Min All particulate emissions reported as mg/nm 3 Dry corrected to 10% O 2. The final correlation includes three zero points as described in ISO Unit No. 6 Particulate Emission Monitor Correlation Equations Kendal Power Station Unit No. 6 September 2016 Correlations Issued Date Function Correlation *MME Monitor Output mg/nm 3 10% O yyyy/mm/dd 2 mg/nm 3 (d) Range Coefficient No. = m * (ma or %CH) + 10% O 2 OD /09/ * ma to /09/ * %CH to 1.6

15 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 7 of 62 Unit No. 6 Air flow to gas flow correlation The following table presents the results of the plant recorded total Air Flow indication (k/s) as well as the measured Gas Flow results (Nm 3 10% O 2 ). Recorded Total Air Flow Measured Gas Flow Test No. kg/s Nm 3 10% O Average Max Min Gas Flow reported as Nm 3 / s Dry corrected to 10% O 2 Output No. Kendal Power Station Unit No. 6 September 2016 Correlations Issued Date Function Correlation *MMGF Monitor yyyy/mm/dd n/a 2016/09/30 Nm 3 /s 10% O 2 = m * kg/s Air Flow + c * Air Flow (kg/s) Gas Flow reported as Nm 3 / s Dry corrected to 10% O 2 *MMGF: Maximum Measured Gas Flow during correlation period Coefficient Nm 3 /s 10% O 2 Range n/a

16 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 8 of 62 The detailed results of the correlation measurements for Units No. 2 & 6 have been presented in the following Tables: Tables No. 1 to 7: Detailed Measurement Results Appendix No. 1 Tables No. 8 & 11: Plant Parameters Appendix No. 2 Figures 1 & 2: Particulate Emission Monitor Correlation Graphs Appendix No. 3 Figure 3 & 4: Air Flow to Gas Flow Correlation Graph Appendix No. 3 Appendix No. 8 Filter Mass Sheets The following abbreviations were used in the text, tables and figures: MCR Maximum Continuous Rating C Degrees Celsius % v/v Percentage on a Volume-by-Volume basis Am 3 Actual Cubic Metres Nm 3 Normal Cubic Metres g/s Grams per second mg/s Milligrams per second Fo Fields out ESP Electrostatic Precipitator FFP Fabric Filter Plant ext. Extinction mg/nm 3 10% O 2 Milligrams per Normal cubic meters dry corrected to 10% Oxygen Actual refers to the measured temperature and pressure conditions of the gases in the duct Normal refers to the actual conditions being normalised to 0 C and 101,325 kpa.

17 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 9 of Discussion 5.1. Unit No. 2 Total Particulate Matter (TPM) Monitor Correlation The correlation on Unit No. 2 was completed from the 2 nd to the 10 th of September A total of 9 measurements were conducted. The measured particulate emission concentrations ranged from 15.4 to 42.3 mg/nm 3 10% O 2, well below the negotiated cap value of 200 mg/nm 3 10% O 2. The corresponding particulate emission monitor signals, recorded from Output No. 1, ranged from 5.2 to 6.3 ma over an operating range of 537 to 676 MW. The resulting co-ordinates produced the following correlation with a coefficient of 0.98, well within the standard s tolerance of 0.95 to The figure above also includes, for comparative purposes, the Measurement co-ordinates from the previous correlation conducted in December It can be seen that the co-ordinates from the 2015 correlation support the new correlation, with all 9 of the 2015 co-ordinates falling within the 2016 September correlation tolerance intervals. It can however also be seen that the particulate emissions measured from Unit No. 2 have significantly decreased from December 2015 to September The average emission concentrations measured in December 2015 was recorded as 118 mg/nm 3 10% O 2 whereas the average emission concentration measured in September 2016 is 29.5 mg/nm 3 10% O 2.

18 Boiler Load (MW) Total Air Flow (%) # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 10 of Unit No. 2 Airflow to Gas Flow Correlation The Total Air Flow to Gas Volume Flow Rates correlation was also determined during this period. The measured gas volume flow rates, which ranged from to Nm 3 /s 10% O 2, were correlated against the plants corresponding Total Air flow Rates to produce a correlation with a coefficient of No measurements were excluded from the final Total Air Flow to Gas Flow correlation. The following trends indicate typical normal load and air flow variation experienced during the Measurements on Unit No Kendal Power Station Units No. 2 Measurement No. 5 Generator Load (MW) Kendal Power Station Units No. 2 Measurement No. 5 Total Air Flow

19 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 11 of Unit No. 6 Total Particulate Matter (TPM) Monitor Correlation The correlation on Unit No 6 was completed from the 30 th of August to the 8 th of September A total of 11 measurements were conducted on Unit No. 6 however measurement No. 8 was not completed due to a unit shut down that coincided with this measurement. The measured particulate emission concentrations ranged from 27.2 to mg/nm 3 10% O 2, well within the cap value of 200 mg/nm 3 10% O 2. The corresponding particulate emission monitor signals, recorded from Output No. 1, indicated values from 5.5 to 11.0 mas over an operating range of 392 to 677 MW. The resulting correlation complies with the requirements of the ISO and the Eskom standard for Emission Monitoring & Reporting and may be used in the report of emission form Unit No Unit No. 6 Airflow to Gas Flow Correlation The Total Air Flow to Gas Volume Flow Rates correlation was also determined during this period. The measured gas volume flow rates, which ranged from to Nm 3 /s 10% O 2, were correlated against the plants corresponding Total Air flow Rates to produce a correlation with a coefficient of No measurements were excluded from the final Total Air Flow to Gas Flow correlation. The following Boiler Load trends indicate the normal load variation experienced during the Measurements on Unit No. 6.

20 Boiler Load (MW) Total Air Flow (%) Boiler Load (MW) Total Air Flow (%) # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 12 of Kendal Power Station Units No. Unit 6 Measurement No. 1 Generator Load (MW) Kendal Power Station Units No. Unit 6 Measurement No. 1 Total Air Flow Kendal Power Station Units No. 6 Measurement No. 2 Generator Load (MW) Kendal Power Station Units No. 6 Measurement No. 2 Total Air Flow 6. Monitoring Deviations 6.1. A total of 9 & 10 measurements were included in the correlations of Units No. 2 & 6 respectively. The Eskom Emission standard set a target of 12 measurements for correlations on ESP Unit, however this could not be complied with during the allocated time period due to an unscheduled unit shut down and plant constraints. 7. Recommendations It is recommended that: 7.1. The particulate emissions from Units No. 2 & 6, reported to the authorities, are according to the correlation functions presented in Figures No. 1 to 4 of this report New compliant correlations are conducted on Unit No. 2 & 6 during the third quarter of Acknowledgement The author expresses sincere appreciation for the co-operation and assistance of the Kendal personnel during the correlation.

21 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 13 of References 9.1. South African Air Quality Act No. 39 of ISO 9096 Stationary source emission Manual Determination of mass concentration of particulate matter ISO Stationary source emission Determination of concentration of particulate matter (dust) at low concentrations Manual gravimetric method ISO Stationary source emissions Automated monitoring of mass concentrations of particles Performance characteristics, test methods and specifications ESKOM Standard for Emission Monitoring and Reporting 10. Distribution A Motlatla Eskom Kendal Power Station M Mohoto Eskom Kendal Power Station J Zwane Eskom Kendal Power Station T Rasivhetshele Eskom Kendal Power Station R Rampiar Eskom Enterprises Park Ebrahim Patel Eskom Enterprises Park

22 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 14 of 62 Appendix No. 1 Detailed Measurement Results

23 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 15 of 62 Unit No. 2 Table No. 1 Measurements No. 1 to 3 Customer Kendal Kendal Kendal Unit No Location Stack Stack Stack Measurement No Date yyyy/mm/dd 2016/09/ /09/ /09/02 Start Time 00H00 12H17 13H58 15H36 End Time 00H00 13H29 15H09 16H45 Load MW Monitor Type Serial No. Range No. 1 OD 1.60 Particulate M CU R Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GD5 GD6 GD7 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

24 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 16 of 62 Unit No. 2 Table No. 2 Measurements No. 4 to 6 Customer Kendal Kendal Kendal Unit No Location Stack Stack Stack Measurement No Date yyyy/mm/dd 2016/09/ /09/ /09/09 Start Time 00H00 12H02 14H00 15H48 End Time 00H00 13H29 15H16 17H03 Load MW Monitor Type Serial No. Range No. 1 OD 1.60 Durag D-R 290 M M CU R Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GD 8 GD 9 GD 10 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

25 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 17 of 62 Unit No. 2 Table No. 3 Measurements No. 7 to 9 Customer Kendal Kendal Kendal Unit No Location Stack Stack Stack Measurement No Date yyyy/mm/dd 2016/09/ /09/ /09/10 Start Time 00H00 00H00 01H43 03H15 End Time 00H00 01H09 02H52 05H26 Load MW Monitor Type Serial No. Range No. 1 OD 1.60 Durag D-R 290 M M CU R Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GD 11 GD 12 GD 13 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

26 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 18 of 62 Unit No. 6 Table No. 4 Measurements No. 1 to 3 Customer Kendal Kendal Kendal Unit No Location Stack Stack Stack Measurement No Date yyyy/mm/dd 2016/08/ /08/ /08/31 Start Time 00H00 15H31 11H27 13H40 End Time 00H00 12H53 12H53 14H59 Load MW Monitor Type Serial No. Range No. 1 OD 1.60 Particulate M R CU Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used CG1 GC2 GC3 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

27 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 19 of 62 Unit No. 6 Table No. 5 Measurements No. 4 to 6 Customer Kendal Kendal Kendal Unit No Location Stack Stack Stack Measurement No Date yyyy/mm/dd 2016/08/ /09/ /09/01 Start Time 00H00 15H37 09H35 23H17 End Time 00H00 17H27 11H02 00H59 Load MW Monitor Type Serial No. Range No. 1 OD 1.60 Durag D-R 290 M M R CU Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GC4 GC5 GC7 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

28 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 20 of 62 Unit No. 6 Table No. 6 Measurements No. 7 & 9 Customer Kendal Kendal Unit No. 6 6 Location Stack Stack Measurement No. 7 9 Date yyyy/mm/dd 2016/09/ /09/07 Start Time 00H00 01H33 23H45 End Time 00H00 02H48 01H01 Load MW Monitor Type Serial No. Durag D-R 290 M M R CU Range No. 1 OD Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GC8 GC10 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

29 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 21 of 62 Unit No. 6 Table No. 7 Measurements No. 10 & 11 Customer Kendal Kendal Unit No. 6 6 Location Stack Stack Measurement No Date yyyy/mm/dd 2016/09/ /09/08 Start Time 00H00 01H30 03H07 End Time 00H00 02H41 04H23 Load MW Monitor Type Serial No. Durag D-R 290 M M CU R Range No. 1 OD Range No. 2 OD Average Range No. 1 ma Average Range No. 2 ma Ambient Temperature C Gas Temperature C Barometric pressure kpa (g) Duct pressure Pa Duct pressure kpa (abs) Moisture Mass mg Moisture %v/v Oxygen % Nozzle diameter mm Sample Time min Thimbles used GC11 GC12 Total Dust Mass g Velocity m/s Gas Volume Flow Am 3 /s Gas Volume Flow Nm 3 /s Gas Volume Flow Dry Am 3 /s (d) Gas Volume Flow Dry Nm 3 /s (d) Gas Volume Flow 10% O 2 Nm 3 /s Dust Concentration Corrected for Ref O 2 mg/am 3 (wet) Dust Concentration Corrected for Ref O 2 mg/nm 3 (wet) Dust Concentration Corrected for Ref O 2 mg/am 3 (dry) Dust Concentration Corrected for Ref O 2 mg/nm 3 (dry) Outlet Dust Flowrate g/s Stack Diameter m Duct Area m Moisture Concentration mg/sm 3 (dry) Isokineticity % Dust Concentration [mg/nm 3 ] is the measured dust concentration Normalised to gas conditions at 0 C and 101,325 kpa.

30 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 22 of 62 Appendix No. 2 Plant Parameters As Received from Station

31 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 23 of 62 Unit No. 1 Table No. 8 Plant parameters Load(MW) O2 LH(%) O2 RH(%) Temp LH(Deg): PAH Temp 1 PAH Temp 2 PAH Temp 3 SAH Temp 1 SAH Temp 2 SAH Temp 3 Measurement No. 1 Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Temp RH(deg): PAH Temp 1 PAH Temp 2 PAH Temp 3 SAH Temp 1 SAH Temp 2 SAH Temp 3 mp ESP outlet(detal Feed water(kgtotal Aiflow(kg/s) Measurement No. 1 Average #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! #DIV/0! Fuel Factor Milling plant: Mill A Mill B Mill C Mill D Mill E Gas Emissions: SO2(ppm) Nox(ppm) Measurement No. 1 Average 46.9 #DIV/0! Average 46.9 #DIV/0! Average 46.6 #DIV/0! Average 42.5 #DIV/0! Average 42.1 #DIV/0! Average 39.6 #DIV/0! Average 39.7 #DIV/0! Average 40.6 #DIV/0! Average 42.8 #DIV/0!

32 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 24 of 62 Unit No. 2 Table No. 9 Plant parameters CO2(%) O2(%) ust Emission(HRL ma Measurement No. 1 Average Average Average Average Average Average Average Average Average

33 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 25 of 62 Unit No. 6 Table No. 10 Plant parameters Load(MW) O2 LH(%) O2 RH(%) Temp LH(Deg): PAH Temp 1 PAH Temp 2 PAH Temp 3 SAH Temp 1 SAH Temp 2 SAH Temp 3 Measurement No. 1 Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! Average #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! Temp RH(deg): PAH Temp 1 PAH Temp 2 PAH Temp 3 SAH Temp 1 SAH Temp 2 SAH Temp 3 mp ESP outlet(detal Feed water(kgtotal Aiflow(kg/s) Measurement No. 1 Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! #DIV/0! Fuel Factor Milling plant: Mill A Mill B Mill C Mill D Mill E Gas Emissions: SO2(ppm) Nox(ppm) Measurement No. 1 Average 41.3 #DIV/0! Average 38.4 #DIV/0! Average 38.4 #DIV/0! Average 37.9 #DIV/0! Average 43.2 #DIV/0! Average 43.2 #DIV/0! Average 43.7 #DIV/0! Average 39.3 #DIV/0! #DIV/0! #DIV/0! #DIV/0! 10 Average 39.9 #DIV/0! #DIV/0! #DIV/0! #DIV/0! 11 Average 39.9 #DIV/0! #DIV/0! #DIV/0! #DIV/0!

34 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 26 of 62 Unit No. 6 Table No. 11 Plant parameters CO2(%) O2(%) ust Emission(HRL ma Measurement No. 1 Average Average Average Average Average Average Average Average #DIV/0! #DIV/0! Average #DIV/0! #DIV/0! Average #DIV/0! #DIV/0!

35 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 27 of 62 Appendix No. 3 Correlation Graphs (Monitor Output ma)

36 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 28 of 62 Kendal Power Station Unit No. 2 Particulate Emission Monitor Correlation September 2016 Output No. 1 Plant: Kendal PS Operational data: Location: Stack Operating Range: [mg/nm 3 10% O 2] Monitor information: Limits of validity: [as an hourly average] Make of Monitor: Durag Lower limit: 15.4 [mg/nm 3 10% O 2] Model: D-R 290 M Upper limit: 42.3 [mg/nm 3 10% O 2] Serial Number: M: R: Linear function: E = * x CU: Monitor setting: 0 to 1.6 OD Output No. 1 where: E = Emission [mg/nm 3 O 2] Dates: x = Monitor output [ma] Calibration date: 10 th August 2016 Correlation dates: 2 nd to 10 th September 2016 Correlation Coefficient: 0.98 Note: All measurements conducted with quartz filters. This correlation was produced as described in the German VDI guide with reference to the zero point hypotheses. FIGURE 1 Prepared by: Stacklabs report No. RSL224 ISO 9096, & PH Pretorius ISO 9096:2003(E) Stacklabs ISO #:825268/: ISO 2003

37 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 29 of 62 Kendal Power Station Unit No. 6 Particulate Emission Monitor Correlation September 2016 Output No. 1 Plant: Kendal PS Operational data: Location: Stack Operating Range: [mg/nm 3 10% O 2] Monitor information: Limits of validity: [as an hourly average] Make of Monitor: Durag Lower limit: 27.2 [mg/nm 3 10% O 2] Model: D-R 290 M Upper limit: [mg/nm 3 10% O 2] Serial Number: M: R: Linear function: E = * x CU: Monitor setting: 0 to 1.6 OD Output No. 1 where: E = Emission [mg/nm 3 O 2] Dates: x = Monitor output [ma] Calibration date: 30 th August 2016 Correlation dates: 30 th Aug to 8 th Sep2016 Correlation Coefficient: 0.99 Note: All measurements conducted with quartz filters. This correlation was produced as described in the German VDI guide with reference to the zero point hypotheses. FIGURE 2 Prepared by: Stacklabs report No. RSL224 ISO 9096, & PH Pretorius ISO 9096:2003(E) Stacklabs ISO #:825268/: ISO 2003

38 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 30 of 62 Kendal Power Station Unit No. 2 Air Flow to Gas flow Correlation September 2016 Plant: Kendal PS Operational data: Location: Stack Operating Range: 996 Nm 3 /s Dry 10% O 2 Monitor information: Limits of validity : [as an hourly average] Make of Monitor: N/A Lower limit: Nm 3 /s Dry 10% O 2 Model: N/A Upper limit: Nm 3 /s Dry 10% O 2 Serial Number: N/A Linear function: E = * x Monitor setting: N/A where: E = Gas Flow [Nm 3 /s Dry 10% O 2] Dates: x = Total Air Flow [kg/s] Calibration date: N/A Correlation dates: 2 nd to 10 th Sep 2016 Correlation Coefficient: 0.99 This correlation spot-check was produced as described in the German VDI guide with reference to the zero point hypotheses. FIGURE 3 Prepared by: Stacklabs report No. RSL224 ISO 9096, & PH Pretorius ISO 9096:2003(E) Stacklabs ISO #:825268/: ISO 2003

39 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 31 of 62 Kendal Power Station Unit No. 6 Air Flow to Gas flow Correlation September 2016 Plant: Kendal PS Operational data: Location: Stack Operating Range: Nm 3 /s Dry 10% O 2 Monitor information: Limits of validity : [as an hourly average] Make of Monitor: N/A Lower limit: Nm 3 /s Dry 10% O 2 Model: N/A Upper limit: Nm 3 /s Dry 10% O 2 Serial Number: N/A Linear function: E = * x Monitor setting: N/A where: E = Gas Flow [Nm 3 /s Dry 10% O 2] Dates: x = Total Air Flow [kg/s] Calibration date: N/A Correlation dates: 30 th Aug to 8 th Sep 2016 Correlation Coefficient: 0.99 This correlation spot-check was produced as described in the German VDI guide with reference to the zero point hypotheses. FIGURE 4 Prepared by: Stacklabs report No. RSL224 ISO 9096, & PH Pretorius ISO 9096:2003(E) Stacklabs ISO #:825268/: ISO 2003

40 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 32 of 62 Appendix No. 4 Water Vapour Concentration Calculation

41 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 33 of 62 Vwsg(std) = (Wf Wi) /ρ Where: Wf = Final weight of silica gel & inpinger (g) Wi = Initial weight of silica gel & inpinger (g) ρ = Density of water vapour at NTP (0.804 kg/m 3 ) Vwsg(std) = Volume of water vapour collected in silica gel (g) at NTP Where: Vwsg(std) Bws = Vwsg(std) + Vm(std) Bws = Proportion of water by volume %v/v Vm(std) = Dry gas volume measured by dry gas meter (Nm 3 dry)

42 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 34 of 62 Appendix No. 5 Outlines of Filter Weighing Procedure Pre-test Preparations Procedure Sampling System Integrity Checks And Sampling Procedures

43 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 35 of FILTER WEIGHING Before the test, the filters are prepared as follows: The required numbers of filters are marked with a unique number. The filters are then heated in an oven at 120 degrees Celsius for a period of one hour. After heating, all the filters are set out together with three reference filters in a dedicator where they will condition for a period of 48 hours. Each filter is then weighed three times, in a temperature controlled clean room, where the masses are captured on a dedicated computer system. Following the weighing process, the filters are packed and sealed into a separate container ready for use. The reference filters are treated in the same manner as those earmarked for the tests, but are not taken to site. After the site measurements, the used and reference filters are again set out in the desiccators and allowed to condition for up to 100 hours. The same weighing procedure is again followed and the final contaminant masses are calculated by the computer system. 2. PRE-TEST PREPARATIONS On site, the equipment is set up at the measuring location. The inside dimensions of the duct are determined. The number of test points per traverse is determined according to the standards and the sampling probe marked accordingly 3. SAMPLING SYSTEM INTEGRITY A leak check is performed on the impulse lines to ensure measurement integrity. With each change in filter or any other operation which might influence the integrity of the vacuum system, a vacuum check is performed. This ensures that only the gas which entered the nozzle will be measured by the gas test meter. Gaseous analysers are zero and span checked with calibration gas at the measurement points. 4. SAMPLING PROCEDURE Gas temperature, pressure and velocity head readings are logged at each sampling point. Velocity head readings are updated at intervals of 1 minute. During this time, the computer program calculates the orifice flow settings required for isokineticity and the flow is adjusted accordingly with each update, either automatically or manually depending on the particular system used. Oxygen in the flue gas is measured to determine gas density. An orifice flow meter is used to facilitate the adjustment of the sampling flow rate at oneminute intervals. The relevant parameters for flow calculation are entered into the computer. The computer is programmed to determine the flow rate through the orifice in order to achieve isokineticity. A dry gas meter is incorporated into the sampling train and is used to record the total actual volume sampled and therewith to determine the percentage isokineticity. Moisture is separated from the sampled gases during sampling, using a water trap and silica gel. The A indicator in the silica gel changes colour as moisture is absorbed. The accumulated liquid is used after the test to determine the moisture content on a percentage-by-volume basis. This value is again incorporated into the volume of dry gas sampled to determine the concentration of pollutants in the gases at Actual and Normal (sometimes referred to as Standard) conditions. The uncertainty before the test, about the moisture content in the gas, fluctuation in the gas flows and human error contribute towards the final deviation from 100 % isokineticity.

44 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 36 of 62 After completion of a measurement the relevant sampling components may be rinsed in order to capture pollutants that may have become attached to the sampling system s exposed surfaces. The rinse medium is captured and contaminants within will be added to the total sampled mass. Relevant plant operating parameters are logged, where possible, for reference purposes and it is usually recommended to take raw product samples during the tests. The content of certain elements in the raw product has specific bearing on plant performance and is useful for comparative reference. On completion of all the site measurements the equipment will be removed from the plant, returned to the laboratory and work shop for processing and cleaning. Where necessary, additional calibration checks will be conducted on specific instruments to determine operational continuity.

45 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 37 of 62 Appendix No. 6 TPM Monitor Output Trends (ma)

46 Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) TPM Monitor Output (ma) Particulate Emission (ma) # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 38 of 62 Kendal Unit No. 2 Monitor Trends ma Measurements No. 1 to Kendal Power Station Units No. 2 Measurement No. 1 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 5 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 2 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 6 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 3 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 7 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 4 Stack Emission Particulates (%) Kendal Power Station Units No. 2 Measurement No. 8 Stack Emission Particulates (%)

47 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 39 of 62 Kendal Unit No. 2 Monitor Trends ma Measurement No. 9

48 Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) Particulate Emission (ma) TPM Monitor Output (ma) Particulate Emission (ma) # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 40 of 62 Kendal Unit No. 6 Monitor Trends ma Measurements No. 1 to 7 & Kendal Power Station Units No. Unit 6 Measurement No. 1 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 5 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 2 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 6 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 3 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 7 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 4 Stack Emission Particulates (%) Kendal Power Station Units No. 6 Measurement No. 9 Stack Emission Particulates (%)

49 Particulate Emission (ma) Particulate Emission (ma) # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 41 of 62 Kendal Unit No. 6 Monitor Trends ma Measurement No. 10 & Kendal Power Station Units No. 6 Measurement No. 10 Stack Emission Particulates (ma) Kendal Power Station Units No. 6 Measurement No. 11 Stack Emission Particulates (ma)

50 # Kendal Power Station Units No 2 & 6 Correlation August & September 2016 Report No. RSL224 Page 42 of 62 Appendix No. 7 Particulate Emission Monitor Calibration Conducted By Kendal C & I

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