STACK EMISSIONS MONITORING REPORT

Transcription

1 STACK EMISSIONS MONITORING REPORT 24 Langlands Place Kelvin South Business Park East Kilbride G75 0YF Tel: Fax: Your contact at ESG David Hay Business Manager North Tel: ESG Job Number: Report Date: Operator & Address: Co. Cork Ireland Permit: Release Point: Sampling Date(s): 23 March 2016 LEK th May 2016 Version: 1 Report By: Cormac Dunne MCERTS Number: MM MCERTS Level: MCERTS Level 2 Team Leader Technical Endorsements: 1, 2, 3 & 4 Report Approved By: Matthew Green MCERTS Number: MM Business Title: MCERTS Level 2 Team Leader Technical Endorsements: 1, 2, 3 & 4 Signature: Report Template Issue 22 (August 2015) Page 1 of 29 EPA Export :02:06:27

2 CONTENTS EXECUTIVE SUMMARY Stack Emissions Monitoring Objectives Plant Operator Stack Emissions Monitoring Test House APPENDICES Emissions Summary Monitoring Times Process Details Monitoring Methods Analytical Methods Sampling Location Sampling Methods with Subsequent Analysis OnSite Testing Sampling Plane Validation Criteria Duct Characteristics Sampling Lines & Sample Points Sampling Platform Sampling Location / Platform Improvement Recommendations Sampling and Analytical Method Deviations APPENDIX 1 Monitoring Schedule, Calibration Checklist & Monitoring Team APPENDIX 2 Summaries, Calculations, Raw Data and Charts APPENDIX 3 Measurement Uncertainty Budget Calculations Page 2 of 29 EPA Export :02:06:27

3 EXECUTIVE SUMMARY MONITORING OBJECTIVES operates a solid waste incinerator process at which is subject to IPPC Licence P000603, under the EPA Act ESG were commissioned by to carry out stack emissions monitoring to determine the release of prescribed pollutants from the following Plant under normal operating conditions. The results of these tests shall be used to demonstrate compliance with a set of emission limit values for prescribed pollutants as specified in the Plant's IPPC Licence, P Plant Operator Co. Cork Ireland Stack Emissions Monitoring Test House ESG East Kilbride Laboratory 24 Langlands Place Kelvin South Business Park East Kilbride G75 0YF UKAS and MCERTS Accreditation Number: 1015 Opinions and interpretations expressed herein are outside the scope of UKAS accreditation. MCERTS accredited results will only be claimed where both the sampling and analytical stages are UKAS accredited. This test report shall not be reproduced, except in full, without written approval of ESG. Page 3 of 29 EPA Export :02:06:27

4 EXECUTIVE SUMMARY EMISSIONS SUMMARY Parameter Units Result Calculated Uncertainty +/ Hydrogen Bromide mg/m³ Hydrogen Bromide Emission Rate g/hr Hydrogen Fluoride mg/m³ Hydrogen Fluoride Emission Rate g/hr Oxygen % v/v P Moisture % P Stack Gas Temperature o C 128 Stack Gas Velocity m/s Gas Volumetric Flow Rate (Actual) m³/hr Gas Volumetric Flow Rate (STP, Wet) m³/hr P Gas Volumetric Flow Rate (STP, Dry) m³/hr Gas Volumetric Flow Rate at Reference Conditions m³/hr ND = None Detected, Results at or below the limit of detection are highlighted by bold italic text. The above volumetric flow rate is calculated using data from the preliminary survey. Mass emissions for non isokinetic tests are calculated using these values. For all isokinetic testing the mass emission is calculated using test specific flow data and not the above values. Reference conditions are 273K, 101.3kPa, dry gas 11% Oxygen. Limit MCERTS accredited result P P Page 4 of 29 EPA Export :02:06:27

5 EXECUTIVE SUMMARY Parameter MONITORING TIMES Sampling Date(s) Sampling Times Sampling Duration Hydrogen Bromide Run 1 Hydrogen Fluoride Run 1 Combustion Gases Preliminary Stack Traverse 23 March March March March :04 16:36 32 minutes 15:15 15:46 31 minutes 16:09 16:39 30 minutes 14:56 Page 5 of 29 EPA Export :02:06:27

6 EXECUTIVE SUMMARY PROCESS DETAILS Parameter Description of process Continuous or batch Product Details Part of batch to be monitored (if applicable) Normal load, throughput or continuous rating Fuel used during monitoring Abatement Plume Appearance Process Details Solid waste incinerator Continuous N/A Incinerator N/A Normal Natural gas Bag filter with lime & activated carbon Moisture plume visible Page 6 of 29 EPA Export :02:06:27

7 EXECUTIVE SUMMARY Monitoring Methods The selection of standard reference / alternative methods employed by ESG is determined, wherever possible by the hierarchy of method selection outlined in Environment Protection Agency Technical Guidance Note (Monitoring) AG2. i.e. CEN, ISO, US EPA etc. MONITORING METHODS Species Method ESG UKAS Lab MCERTS Limit of Calculated Standard Reference Method / Technical Number Accredited Detection MU Alternative Method Procedure Method (LOD) +/ % Hydrogen Bromide SRM US EPA Method 26/a AE mg/m³ 12.5 % Hydrogen Fluoride SRM ISO AE mg/m³ 12.3 % O 2 AM EN AE % 2.20% H 2 O SRM BS EN AE % 4.31% Velocity SRM EN ISO AE Pa 2.4 % Volumetric Flow Rate SRM EN ISO AE % Page 7 of 29 EPA Export :02:06:27

8 EXECUTIVE SUMMARY Analytical Methods The following tables list the analytical methods employed together with the custody and archiving details: SAMPLING METHODS WITH SUBSEQUENT ANALYSIS Species Analytical Technique Analytical UKAS Lab Analysis Lab Sample Archive UKAS Accredited Procedure Number (ESG or Archive Period Lab Analysis Subcontract) Location Hydrogen Bromide Ion Chromatography ASC/SOP/ ESG Bretby ESG Bretby 3 months Hydrogen Fluoride Ion Chromatography ASC/SOP/110/ ESG Bretby ESG Bretby 3 months ONSITE TESTING Species Analytical Technique Analytical UKAS Lab MCERTS Laboratory Data Archive Procedure Number Accredited Archive Period Analysis Location O 2 Zirconia Cell AE ESG East Kilbride ESG East Kilbride 5 years H 2 O Gravimetric AE ESG East Kilbride Page 8 of 29 EPA Export :02:06:27

9 EXECUTIVE SUMMARY SAMPLING LOCATION Sampling Plane Validation Criteria Value Units Requirement Compliant Method Lowest Differential Pressure 28 Pa >= 5 Pa BS EN Lowest Gas Velocity 6.82 m/s Highest Gas Velocity 8.93 m/s Ratio of Gas Velocities 1.31 : 1 < 3 : 1 BS EN Mean Velocity 7.75 m/s Maximum angle of flow with regard to duct axis <15 o < 15 o BS EN No local negative flow BS EN Shape Circular Value Units Isokinetic Depth 0.50 m Sample port size 4" BSP 4" BSP Width m Number of lines used 1 1 Area 0.20 m 2 Number of points / line 4 1 Port Depth 220 mm Duct orientation Vertical Vertical General Platform Information Permanent / Temporary Platform / Ground level / Floor Level / Roof Inside / Outside DUCT CHARACTERISTICS AG1 Platform requirements Is there a sufficient working area so work can be performed in a compliant manner Platform has 2 levels of handrails (approximately 0.5 m & 1.0 m high) Platform has vertical base boards (approximately 0.25 m high) Platform has removable chains / self closing gates at the top of ladders Handrail / obstructions do not hamper insertion of sampling equipment Depth of Platform = >Stack depth / diameter + wall and port thickness + 1.5m SAMPLING LINES & POINTS Filtration Out Stack Out Stack SAMPLING PLATFORM NonIso & Gases Permanent Outside Sampling Platform Improvement Recommendations (if applicable) The sampling location meets all the requirements as specified in EA Guidance Note AG1. Where possible please install another sample port 90 degrees to the current sample port. Page 9 of 29 EPA Export :02:06:27

10 EXECUTIVE SUMMARY Sampling & Analytical Method Deviations Sample Lines Only one sample line was available during the monitoring campaign. The number of sample points were therefore doubled on the available sample line as the sample plane passed it's validation criteria. Process Load Process load is typically 1015 bags/hr (~200 kg/hr), on the day of monitoring the process load was a lot lower i.e. 3 bags/hr. Page 10 of 29 EPA Export :02:06:27

11 APPENDICES CONTENTS APPENDIX 1 Monitoring Schedule, Calibration Checklist & Monitoring Team APPENDIX 2 Summaries, Calculations, Raw Data and Charts APPENDIX 3 Measurement Uncertainty Budget Calculations Page 11 of 29 EPA Export :02:06:27

12 APPENDIX 1 Monitoring Schedule, Calibration Checklist & Monitoring Team Species Method ESG UKAS Lab MCERTS Standard Reference Method / Alternative Method MONITORING SCHEDULE Technical Number Accredited Procedure Method Number of Samples Hydrogen Bromide SRM US EPA Method 26/a AE Hydrogen Fluoride SRM ISO AE O 2 AM EN AE H 2 O SRM BS EN AE Velocity SRM EN ISO AE Page 12 of 29 EPA Export :02:06:27

13 Extractive Sampling APPENDIX 1 Monitoring Schedule, Calibration Checklist & Monitoring Team CALIBRATEABLE EQUIPMENT CHECKLIST Instrumental Analyser/s Miscellaneous Equipment Equipment I.D. Equipment Equipment I.D. Equipment Equipment I.D. Control Box DGM Box Thermocouples Meter In Thermocouple Meter Out Thermocouple Control Box Timer Oven Box Probe Probe Thermocouple Probe Probe Thermocouple SPitot LPitot Site Balance Last Impinger Arm LEK 9.17 Horiba PG250 Analyser LEK 12.1 Laboratory Balance LEK LEK 9.11 FTIR Tape Measure LEK 20.6 FTIR Oven Box Stopwatch LEK Bernath 3006 FID Protractor LEK 17.6 Signal 3030 FID Barometer LEK 16.5 Servomex Digital Micromanometer LEK 15.7 LEK 6.44 JCT Heated Head Filter Digital Temperature Meter LEK 2.2 Thermo FID Stack Thermocouple LEK Stackmaster Mass Flow Controller FTIR Heater Box for Heated Line MFC Display module Anemometer 1m Heated Line (1) Ecophysics NOx Analyser 1m Heated Line (2) LEK Chiller (JCT/MAK 10) LEK m Heated Line (3) Heated Line Controller (1) 5m Heated Line (1) Dioxins Cond. Thermocouple Heated Line Controller (2) 10m Heated Line (1) Callipers Small DGM Heater Controller Inclinometer (Swirl Device) LEK 15.1D Site temperature Logger 10m Heated Line (2) 15m Heated Line (1) LEK m Heated Line (1) LNO 23IH 20m Heated Line (2) NOTE: If the equipment I.D is represented by a dash (), then this piece of equipment has not been used for this test. Personnel MCERTS Number Cormac Dunne MM Hugh McMahon MM Gas (traceable to ISO 17025) Cylinder I.D Number CALIBRATION GASES Supplier ppm % STACK EMISSIONS MONITORING TEAM MCERTS MONITORING TEAM Analytical Tolerance +/ % TE / H&S Qualifications and Expiry Date Level Expiry TE1 TE2 TE3 TE4 H&S MCERTS Level 2 Oct17 Sep16 Mar17 Dec16 Dec16 Oct17 MCERTS Trainee Sep20 Sep20 Page 13 of 29 EPA Export :02:06:27

14 Test Run 1 Sampling Times 16:04 16:36 23 March 2016 LOD Limit Emission mg/m³ mg/m³ Rate g/hr Field Blank 0.06 Please note figures in bold italic font are at the limit of detection Reference conditions are 273K, 101.3kPa, dry gas 11% Oxygen. HYDROGEN BROMIDE SUMMARY Concentration mg/m³ 0.10 HYDROGEN BROMIDE QUALITY ASSURANCE CHECKLIST Leak Test Results Mean Sampling Rate Pre sampling leak rate Post sampling leak rate Acceptable leak rate Leak Tests Acceptable? l/min l/min l/min l/min Run Filter Material Filter Size mm C C Run 1 QF Glass GF = Glass Fibre QF = Quartz Fibre Parameter Total IMP C Absorption Run 1 ND None Detected Max. Filtration Temp. ug ug Efficiency % Max. Storage / Transit Temp. HYDROGEN BROMIDE ABSORPTION EFFICIENCY Acceptable Absorption Efficiency % Type of Absorbers Absorption Solutions 0.1M Sulphuric Acid Absorption Efficiency Acceptable? N/A < 1mg/m³ Page 14 of 29 EPA Export :02:06:27

15 APPENDIX 2 Summaries, Calculations, Raw Data and Charts ISOKINETIC SAMPLING EQUATIONS 1 Hydrogen Bromide Absolute pressure of stack gas, P s Velocity of stack gas, V s Barometric pressure, P b mm Hg 754 Pitot tube velocity constant, K p Stack static pressure, P static mm H 2 O 6 Velocity pressure coefficient, C p 0.86 P s = P b + (P static ) mm Hg 754 Mean of velocity heads, DP avg mm H 2 O Mean square root of velocity heads, ÖDP 2.19 Vol. of water vapour collected, V wstd Mean stack gas temperature, T o s C 127 Moisture trap weight increase,vlc g H₂0 by Non Iso V wstd = ( )(V lc ) m 3 V s = (K p )(C p )(ÖDP)(Ö(T s + 273)) m/s 9.2 (M s )(P s ) Volume of gas metered dry, V mstd Actual flow of stack gas, Q a Volume of gas sample through gas meter, V m Area of stack, A s m Gas meter correction factor, Y d Q a = (60)(A s )(V s ) m³/min 108 Mean dry gas meter temperature, T m Dry total flow of stack gas, Q std Mean pressure drop across orifice, DH mmh 2 O Conversion factor (K/mm.Hg) V mstd = (0.3592)(V m )(P b +(DH/13.6))(Y d ) 0.45 Q std = (Q a )P s (0.3592)(1B wo ) m³/min 59 T m (T s ) +273 Volume of gas metered wet, V mstw Wet total flow of stack gas, Q stw V mstw = V mstd + V wstd m Q stw = (Q a )P s (0.3592) m³/min 73 Vol. of gas metered at O 2 Ref. Cond., V mstd@x%o2 Is the process burning hazardous waste? (If yes, no favourable oxygen correction) (T s ) +273 % oxygen measured in gas stream, act%o (T s ) +273 % oxygen reference condition 11 Percent isokinetic, %I O 2 Reference Factor m³/min 33 O2 Ref = 21.0 act%o Nozzle diameter, D n mm ref%o2 Nozzle area, A n mm V mstd@x%oxygen = (V mstd ) (O 2 Ref ) m Total sampling time, q min 32 Moisture content, B wo %I = (4.6398E6)(T s +273)(V mstd ) % 97 B wo = V wstd (P s )(V s )(A n )(q)(1b wo ) V mstd + V wstd % Acceptable isokinetic range 95% to 115% Moisture by FTIR % Hydrogen Bromide Concentration, C Molecular weight of dry gas, M d Mass collected, M ug 24 CO C wet = M n mg/m³ O V mstw Total C dry = M n mg/m³ N 2 (100 Total) V mstd C dry@x%o2 = M n mg/m³ M d = 0.44(%CO 2 )+0.32(%O 2 )+0.28(%N 2 ) Dry total flow of stack gas at X% O 2, Q stdo2 Q stdo2 = (Q a )P s (0.3592)(1B wo )(O 2 REF) V mstd@x%oxygen Molecular weight of wet gas, M s Hydrogen Bromide Emission Rates, E M s = M d (1 B wo ) + 18(B wo ) g/gmol 27.1 E = [(C wet )(Q stw )(60)] / 1000 g/hr 0.19 Page 15 of 29 EPA Export :02:06:27

16 APPENDIX 2 Summaries, Calculations, Raw Data and Charts HYDROGEN FLUORIDE SUMMARY Sampling Times Concentration Test mg/m³ 15:15 15:46 Run March 2016 LOD Limit Emission mg/m³ mg/m³ Rate g/hr Field Blank 0.49 Reference conditions are 273K, 101.3kPa, dry gas 11% Oxygen. Leak Test Results HYDROGEN FLUORIDE QUALITY ASSURANCE CHECKLIST Mean Sampling Rate Pre sampling leak rate Post sampling leak rate Acceptable leak rate Leak Tests Acceptable? l/min l/min l/min l/min Run Filter Material Filter Size mm C C Run 1 QF PTFE GF = Glass Fibre QF = Quartz Fibre HYDROGEN FLUORIDE ABSORPTION EFFICIENCY Parameter Total IMP C Absorption ug ug Efficiency % Run 1 Max. Filtration Temp Max. Storage / Transit Temp. Acceptable Absorption Efficiency % 95 Type of Absorbers Absorption Solutions 0.1N Sodium Hydroxide Absorption Efficiency Acceptable? N/A < 1mg/m³ Page 16 of 29 EPA Export :02:06:27

17 APPENDIX 2 Summaries, Calculations, Raw Data and Charts COMBUSTION GASES SUMMARY Test Sampling Time and Date O 2 16:09 16:39 23 March 2016 Reference conditions are 273K, 101.3kPa, dry gas 11% Oxygen. Concentration % 15.3 LOD % 0.01 PRESAMPLING CALIBRATION DATA Date 23 March 2016 Chiller Temperature ( C) 2.2 Start Time 10:03 Requirement < 4 C End Time 10:16 Compliant Gas Range Zero Reading Span Reading Zero Check Zero Check Span Check Response Leak Rate (ppm / %) at analyser at analyser at analyser down line down line Time (Secs) % O POSTSAMPLING CALIBRATION DATA Date 23 March 2016 Chiller Temperature ( C) 2.4 Start Time 16:48 Requirement < 4 C End Time 16:57 Compliant Gas Zero Check Span Check Zero Drift Span Drift down line down line (%) (%) O Page 17 of 29 EPA Export :02:06:27

18 Page 18 of 29 EPA Export :02:06:27

19 Concentration % v/v ESG 25.0 OXYGEN EMISSIONS CHART O O :39 16:38 16:37 16:36 16:35 16:34 16:33 16:32 16:31 16:30 16:29 16:28 16:27 16:26 16:25 16:24 16:23 16:22 16:21 16:20 16:19 16:18 16:17 16:16 16:15 16:14 16:13 16:12 16:11 16:10 16:09 Time Page 19 of 29 EPA Export :02:06:28

20 APPENDIX 2 Summaries, Calculations, Raw Data and Charts MOISTURE CALCULATIONS Moisture Determination Non Isokinetic Test Number Sampling Time and Date Start Weight End Weight Total gain Concentration LOD Uncertainty kg kg kg % % % Run 1 16:04 16:36 23 March Test Number Sampling Duration Total Volume Sampled Moisture Quality Assurance Sampling Rate Start Leak Rate End Leak Rate Acceptable Leak Rate mins l l/min l/min l/min l/min Leak Tests Acceptable? Run Stack Characteristics Stack Diameter / Depth, D 0.50 m Stack Width, W m Stack Area, A 0.20 m 2 Average stack gas temperature 128 PRELIMINARY STACK SURVEY Stack static pressure kpa Barometric Pressure kpa Stack Gas Composition & Molecular Weights Component Molar Density Conc Dry Volume Dry Conc Conc Wet Volume Wet Conc Mass kg/m 3 Dry Fraction kg/m 3 Wet Fraction kg/m 3 M p % Vol r pi % Vol r pi CO O N H 2 O Where: p = M / pi = r x p o C Calculation of Stack Gas Densities Determinand Dry Density (STP), P STD Wet Density (STP), P STW Dry Density (Actual), P Actual Average Wet Density (Actual), P ActualW Where: P STD = sum of component concentrations, kg/m 3 (not including water vapour) P STW = (P STD + pi of H 2 O) / (1 + (pi of H 2 O / )) Result Units kg/m kg/m kg/m kg/m 3 P Actual = P STD x (Ts / Ps) x (Pa / Ta) P ActualW = P STW x (Ts / Ps) x (Pa / Ta) Page 20 of 29 EPA Export :02:06:28

21 APPENDIX 2 Summaries, Calculations, Raw Data and Charts PRELIMINARY STACK SURVEY TRAVERSE 1 Date of Survey Time of Survey Velocity Measurement Device: 23 March :56 SType Pitot Traverse Distance DP pt DP pt Temp Velocity Volumetric O 2 Angle Point into mmh 2 O Pa o C m/s Flow Rate (actual) % of Swirl duct (m) (average of 3 readings) (average of 3 readings) < < < < < < < < < <15 Mean Traverse Distance DP pt DP pt Temp Velocity Volumetric O 2 Angle Point into mmh 2 O Pa o C m/s Flow Rate (actual) % of Swirl duct (m) (average of 3 readings) (average of 3 readings) Sampling Line A Sampling Line B Mean m³/s m³/s Vol Vol o o PRELIMINARY STACK SURVEY QUALITY ASSURANCE CHECKLIST PITOT LEAK CHECK Pre Traverse Leak Rate Post Traverse Leak Rate Run Start Value End Value Difference Outcome Start Value End Value Difference Outcome Pa Pa % Pa Pa % Run Pass Pass To complete a compliant pitot leak check a pressure of over 80 mmh₂o (or 800 Pa) is applied and the pressure drop monitored over 5 mins. A drop of 5% must be observed. Run SType Pitot Stagnation Check Stagnation (Pa) Reference (Pa) Difference (Pa) Outcome (Permitted +/ 10 Pa) Run Pass Page 21 of 29 EPA Export :02:06:28

22 APPENDIX 2 Summaries, Calculations, Raw Data and Charts PRELIMINARY STACK SURVEY (CONTINUED) Sampling Plane Validation Criteria EA Technical Guidance Note (Monitoring) M1 Result Units Requirement Compliant Lowest Differential Pressure 28 Pa >= 5 Pa Lowest Gas Velocity 6.82 m/s Highest Gas Velocity 8.93 m/s Ratio of Gas Velocities 1.31 < 3 : 1 Maximum angle of flow with regard to duct axis <15 o < 15 o No local negative flow Calculation of Stack Gas Velocity, V Velocity at Traverse Point, V = K pt x (1e) * Ö(2 * DP pt / P ActualW ) Where: K pt = Pitot tube calibration coefficient (1e) = Compressibility correction factor, assumed at a constant Average Stack Gas Velocity, Va 7.75 m/s Calculation of Stack Gas Volumetric Flowrate, Q Duct gas flow conditions Actual Reference Units Temperature o C Total Pressure kpa Oxygen % Moisture % Pitot tube calibration coefficient, K pt 0.86 Gas Volumetric Flowrate Average Stack Gas Velocity (Va) 7.75 m/s Stack Area (A) 0.20 m 2 Gas Volumetric Flowrate (Actual), Q Actual Gas Volumetric Flowrate (STP, Wet), Q STP Gas Volumetric Flowrate (STP, Dry), Q STP,Dry Gas Volumetric Flowrate (REF), Q Ref Result Units m 3 /hr m 3 /hr m 3 /hr m 3 /hr Where: Q Actual = Va x A x 3600 Q STP = Q (Actual) x (Ts / Ta) x (Pa / Ps) x 3600 Q STP,Dry = Q (STP) / (100 (100 / Ma)) x 3600 Q Ref = Q (STP) x ((100 Ma) / (100 Ms)) x ((20.9 O 2 a) / (20.9 O 2 s)) Nomenclature: Ts = Absolute Temperature, Standard Conditions, 273 K Ps = Absolute Pressure, Standard Conditions, kpa Ta = Absolute Temperature, Actual Conditions, K Pa = Absolute Pressure, Actual Conditions, kpa Ma = Water vapour, Actual Conditions, % Vol Ms = Water vapour, Reference Conditions, % Vol O 2 a = Oxygen, Actual Conditions, % Vol O 2 s = Oxygen, Reference Conditions, % Vol Page 22 of 29 EPA Export :02:06:28

23 Value Units Stack Depth 0.50 m Sampling Distance Distance into Units Stack Width m Point (% of Depth) Stack Area 0.20 m 2 A m Sampling Line APPENDIX 2 Summaries, Calculations, Raw Data and Charts STACK DIAGRAM NonIsokinetic/Gases Sampling Isokinetic Sampling Sampling Distance Distance into Swirl Point (% of Depth) Stack (m) o < < < < 15 Isokinetic sampling point Isokinetic sampling points not used Non Isokinetic/Gases sampling point Page 23 of 29 EPA Export :02:06:28

24 APPENDIX 3 Measurement Uncertainty Budget Calculations MEASUREMENT UNCERTAINTY BUDGET ISOKINETIC HYDROGEN BROMIDE Run Sampled Volume Sampled Gas Temp Sampled Gas Pressure Sampled Gas Humidity Oxygen Content Concentration in impinger Limit of Detection Leak m³ K kpa % by volume % by volume mg % by mass % MU required <=2% <2.5 k <=1% <=1% <=5% <5% < 5% of ELV <=2% Run as a % compliant? Run Volume (STP) Mass of Hydrogen Bromide O2 Correction Lab Uncertainty Combined uncertainty m³ mg mg/m³ mg Run MU as mg/m MU as % Leak R1 Uncertainty expressed at a 95% confidence level (where k = 2) (k is a coverage factor which gives a 95% confidence in the quoted figures) Developed for the STA by R Robinson, NPL 0.01 mg/m³ % Page 24 of 29 EPA Export :02:06:28

25 APPENDIX 3 Measurement Uncertainty Budget Calculations MEASUREMENT UNCERTAINTY BUDGET NONISOKINETIC HYDROGEN FLUORIDE Run Sampled Volume Sampled Gas Temp Sampled Gas Pressure Sampled Gas Humidity Oxygen Content Concentration in impinger Limit of Detection Leak m³ K kpa % by volume % by volume mg % by mass % MU required <=2% <2.5 k <=1% <=1% <=5% <5% < 5% of ELV <=2% Run as a % compliant? Run Volume (STP) Mass of Hydrogen Fluoride O2 Correction Lab Uncertainty Combined uncertainty m³ mg mg/m³ mg Run MU as mg/m MU as % Leak R1 Uncertainty expressed at a 95% confidence level (where k = 2) (k is a coverage factor which gives a 95% confidence in the quoted figures) Developed for the STA by R Robinson, NPL 0.02 mg/m³ % Page 25 of 29 EPA Export :02:06:28

26 APPENDIX 3 Measurement Uncertainty Budget Calculations MEASUREMENT UNCERTAINTY BUDGET MOISTURE Run Sampled Volume Sampled Gas Temp Sampled Gas Pressure Sampled Gas Humidity Oxygen Content Leak m³ K kpa % by volume % by volume % MU required < 2% < 2% < 1% < 1% < 10% < 2% Run as a % compliant? Run Volume (STP) Mass Gained O2 Correction Leak Uncollected Mass Combined uncertainty m³ mg mg/m³ mg Run MU as % v/v MU as % R1 Uncertainty expressed at a 95% confidence level (where k = 2) Developed for the STA by R Robinson, NPL 0.59 % v/v 4.31 % Page 26 of 29 EPA Export :02:06:28

27 APPENDIX 3 Measurement Uncertainty Budget Calculations MEASUREMENT UNCERTAINTY BUDGET OXYGEN Reference Reported Concentration Calibration gas Analyser Full Scale 11 %vol %vol %vol 25 %vol Performance characteristics Response time Logger sampling interval Measurement period Number of readings in measurement Repeatability at zero Repeatability at span level Deviation from linearity Zero drift (during measurement period) Span drift (during measurement period) volume or pressure flow dependence atmospheric pressure dependence ambient temperature dependence Combined interference Dependence on voltage Losses in the line (leak) Uncertainty of calibration gas Performance characteristic Standard deviation of repeatability at zero Standard deviation of repeatability at span level Lack of fit Drift volume or pressure flow dependence atmospheric pressure dependence ambient temperature dependence Combined interference (from mcerts) dependence on voltage losses in the line (leak) Uncertainty of calibration gas Value Units specification MU Met? 37 seconds < 200 s 60 seconds 30 minutes % by volume <0.2 % range % by volume <0.4 % range 0.13 % vol <0.3 % volume 0.03 % vol at zero level <2% of volume / 24hr 0.03 % vol at span level <2% volume/24hr 0.02 % of fs / 10l/h <1% range 0.80 % of fs/kpa < 1.5 % range 0.01 % by volume /10K <0.3% volume 10 K 0.14 % range <2% range 0.10 % by volume /10V < 0.1%vol /10 volt 0.00 % of value < 2% of value 1.00 % of value < 2% of value Uncertainty ur0 urs ufit u0dr uspres uapres utemp uvolt uleak ucalib Value of uncertainty quantity Measurement uncertainty (Concentration Measured) Combined uncertainty % of value %vol 0.17 %vol 1.10 % Expanded uncertainty expressed with a level of confidence of 95% Expanded uncertainty expressed with a level of confidence of 95% Developed for the STA by R Robinson, NPL 2.20 % of value % vol Page 27 of 29 EPA Export :02:06:28

28 APPENDIX 3 Measurement Uncertainty Budget Calculations MEASUREMENT UNCERTAINTY BUDGET VELOCITY & VOLUMETRIC FLOW RATE Measured Velocity at Actual Conditions Measured Volumetric Flow rate at Actual Conditions 7.7 m/s 5479 m³/hr Performance Characteristics & Source of Value Units Values Requirement Compliant Uncertainty of pitot tube coefficient Uncertainty of mean local dynamic pressures 0.34 Factor loading, function of the number of measurements. 3 readings minimum 3 Range of measurment device pa 1000 Resolution pa 1.00 Calibration uncertainty pa 2.50 Drift % range 0.10 <1% of Value or 20 Pa whichever is Linearity % range 0.06 <2% of value Uncertainty of molar mass determination kg/mol Uncertainty of temperature measurement K 2.05 <1% of value Uncertainty of absolute pressure in the duct pa 513 Uncertainty associated with the estimate of density Uncertainty associated with the measurement of local velocity Uncertainty associated with the measurement of mean velocity Measurement Uncertainty Velocity Combined uncertainty Expanded uncertainty at a 95% Confidence Interval Note The expanded uncertainty uses a coverage factor of k = 2. Expanded Measurement Uncertainty of Velocity at a 95% Confidence Interval Expressed as a % of the Measured Concentration Expanded uncertainty at a 95% Confidence Interval greater m/s % Measurement Uncertainty Volumetric Flow Rate Combined uncertainty Expanded uncertainty at a 95% Confidence Interval Note The expanded uncertainty uses a coverage factor of k = 2. Expanded Measurement Uncertainty of Volumetric Flow Rate at a 95% Confidence Interval Expressed as a % of the Measured Concentration Expanded uncertainty at a 95% Confidence Interval m³/hr % Page 28 of 29 EPA Export :02:06:28

29 END OF REPORT Page 29 of 29 EPA Export :02:06:28