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Developing and Complying with LDAR Programs Robert vandenMeiracker
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2 C R E A T I N G B A L A N C E SM What is LDAR (elledar)? A) Elf-like humanoids B) Lightning Detection and Ranging C) Enemy of Superman D) Lineal Daughters of the American Revolution E) Leak Detection and Repair
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3 C R E A T I N G B A L A N C E SM What is LDAR? Regulatory Basis: –New Source Performance Standards (NSPS) VOC’s –National Emission Standards for Hazardous Air Pollutants (NESHAP) Organic HAP’s –Resource Conservation and Recovery Act (RCRA) Hazardous Waste –State Rules
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4 C R E A T I N G B A L A N C E SM LDAR Applicability Industry Subject to LDAR –Chemicals, Polymers, & Resins –Pharmaceutical –Pesticide –Pulp and Paper –Hazardous Waste Storage Equipment in VOC / HAP / Haz. Waste Service pumpcompressor valveconnector agitatorpressure relief device instrumentation systemsampling connection system
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5 C R E A T I N G B A L A N C E SM USEPA Enforcement Priorities (Beverly Bannister, Air, Pesticides and Toxics Management Division EPA, Region 4 presentation at the Carolinas Air Pollution Control Association 2008 Spring Conference) USEPA FY08 Air Toxics National Sectors –Leak Detection and Repair –Flaring –Surface Coating Air Toxics Region 4 Sectors –Ongoing –Secondary Aluminum MACT –Pesticides Active Ingredient MACT –Pharmaceutical Production MACT –Phosphoric Acid Mfg/Phosphate Fertilizer MACT –Leak Detection and Repair MACT Sectors
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6 C R E A T I N G B A L A N C E SM
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7 C R E A T I N G B A L A N C E SM 5 “Easy” Steps to a Successful Program Identify Equipment Monitor Equipment Fix Equipment (if it is leaking) Keep Records Documenting Everything Repeat
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8 C R E A T I N G B A L A N C E SM Identify Equipment Read the Applicable Rule(s) –2 to 4 Applicable Rules Not Uncommon –Requirements for Each Rule are Different –Not All Equipment is Subject Part of the Production Unit Threshold Amount of Material Study Process and Instrumentation Diagrams Field Verification
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9 C R E A T I N G B A L A N C E SM How Many Monitoring Points? Pulp and Paper Mill: 600 Chemical Plant: 50,000 Polymer Production: 500 17 Refineries (Valves only) –Minimum # 2,229 –Maximum #42,505 –Average10,042 Source: US EPA Enforcement Alert, October 1999
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10 C R E A T I N G B A L A N C E SM Example Diagram
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11 C R E A T I N G B A L A N C E SM
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12 C R E A T I N G B A L A N C E SM Example Picture
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13 C R E A T I N G B A L A N C E SM Identify Equipment Tags –Metal, Plastic, Label, RF Devices, etc. Diagrams Pictures Tables Post-It ® Notes not Recommended
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14 C R E A T I N G B A L A N C E SM Monitoring Frequency Weekly –RCRA & Generic MACT Pumps Monthly –Most Sources Quarterly –Allowances for Documented Non-Leaking Equipment Annually –Pulp and Paper Equipment Non-Routine –After Process Safety Device Release Minimum Number of days between Inspections
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15 C R E A T I N G B A L A N C E SM Monitoring Types Sensory –Visual, Olfactory and Auditory –“Non-Volatile” Materials / Oils / Low Vapor Pressure Equipment (40 CFR 60, Method 21) –Photo-Ionization Detector (PID) –Flame Ionization Detector (FID) –Does not detect specific compounds –Does not give actual Concentration
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16 C R E A T I N G B A L A N C E SM Monitoring Equipment Specifications –Response Factor < 10 (sample conc. / reading) –Response Time < 30 seconds –Flow Rate (0.1 to 3.0 l/min) –Accuracy / Precision Safety –Electrically Classified Area? –Intrinsically Safe Equipment Other Considerations –Weight, Size, Portability, & Durability
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17 C R E A T I N G B A L A N C E SM Monitoring Equipment Picture
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18 C R E A T I N G B A L A N C E SM Calibration Requirements Initial Response Factor Test –Verify Instrument Responds to the Material(s) to be Detected –Can Use Manufacturer Data for Common Compounds Quarterly Precision –Zero Air and Standard Gas –Standard is Usually Methane –Can be Frustrating, Error < 10% of Calibration Gas Daily Calibration (when in use)
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19 C R E A T I N G B A L A N C E SM What is a Leak? Sensory Observation Instrument Reading –Varies by Rule and Equipment –MON Agitators > 10,000 ppmv –Amino/Phenolic Resin Connectors > 500 ppmv –Pharmaceutical Pumps > 2,000 pppmv –Pulp and Paper Closed Vent Components > 500 ppmv
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20 C R E A T I N G B A L A N C E SM What if a Leak is Detected? Tag it in an Obvious Manner Initial Attempt at Repair Within 5 days –Usually Done with Simple Tools Final Repair Within 15 days –May Require Replacing Seals –Replace Equipment Exemptions Allowed in Certain Instances Keep Records –1 st Attempt / Successful Repair / Document Repaired –Equipment not Repaired within 5/15 day timeframe –Develop a Quality Improvement Program (QIP)
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21 C R E A T I N G B A L A N C E SM Recordkeeping Records: –Equipment List (including exemptions) Depends on Facility –Potentially 1,000’s of points to monitor and keep records –Small: Tables, Forms, etc. –Medium to Large: Integrate LDAR Monitor with off-the-shelf Computer Software
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22 C R E A T I N G B A L A N C E SM Exemptions Difficult / Unsafe to Monitor –Develop Schedule Vacuum Service –Usually Based on level of vacuum (i.e., <-5 kPa) Equipment in Service < 300 hr/hr generally exempt Equipment Designed not to Leak –Welded Connections
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23 C R E A T I N G B A L A N C E SM Difficult / Unsafe to Monitor
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24 C R E A T I N G B A L A N C E SM Who? Identification –Collaboration –Environmental / Production/ Engineering / Maintenance Monitoring –Environmental / Production / Maintenance –Contract Service Recordkeeping & Reporting –Environmental
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25 C R E A T I N G B A L A N C E SM Monitoring Equipment Usually must be Purchased ($8,000+) Calibration / Precision Testing Gases –Watch Expiration Dates Batteries FID’s Use Hydrogen Periodic Maintenance Can be Rented Other Uses
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26 C R E A T I N G B A L A N C E SM Title V Deviations If equipment is repaired within the appropriate timeframe: Usually not a Deviation Deviations –Equipment is not Inspected as Required –Equipment is not Repaired within Required Timeframes –Records are not Maintained
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27 C R E A T I N G B A L A N C E SM Benefits of LDAR Credit for Emissions Reductions –Lower Fees –Minor Source –Exemption from Modeling –PSD Netting –Reduction in SARA Emission Estimates Safety Monitoring Equipment may have other Uses –Confined Space Entry Monitoring –Non-Regulatory Monitoring
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28 C R E A T I N G B A L A N C E SM Challenges to Effective LDAR Compliance Rules are Complex Magnitude of Source to Manage is Typically Huge The numbers involved make it difficult to be perfect always, everytime.
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29 C R E A T I N G B A L A N C E SM Complexity Varying Monitoring Schedules –Different schedules for different types of equipment Pumps, Weekly Visual, Monthly M-21 PRD – GV, M21 within 5 days of Activation Connectors, HL, M-21 after leak repairs –Different schedules for different regulations Valves, GV, LL –Monthly or via Skip Frequency (VV, RCRA, & V) –Quarterly or via Skip Frequency (HON)
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30 C R E A T I N G B A L A N C E SM Complexity Determining individual leak points –Water Lines Steam Lines –Compressed Air Lines –Nitrogen / Inert Gas Lines –Heat Transfer Fluid Lines –Process Lines without Affected Chemicals –Process Lines with Affected Chemicals at Less than Threshold Values –Process lines with affected chemicals –Gas / Vapor –Light Liquid –Heavy Liquid
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31 C R E A T I N G B A L A N C E SM Administrative Burden Compliance Must be Proven –Current LDAR requires Detailed Documentation. –Records are Required for Each Point –Tags for Each Point –Tags for Leakers –Maintenance Records for Each Repair & Repair Attempt –Records for Delays
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32 C R E A T I N G B A L A N C E SM Magnitude Challenges –Easy to miss one or two out of hundreds during set-up or during monitoring –Many tags to maintain –Many records to maintain –Potential for confusion –With hundreds of non-leaking sources, easy for technicians to become complacent –Costly
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33 C R E A T I N G B A L A N C E SM Requirements for a Good Program Set-Up –Accurate Drawings –Detailed Knowledge of Process Conditions Composition, Vapor Pressure, Pressure or Vacuum Service? –Assignment of Organized, Detailed Oriented Personnel
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34 C R E A T I N G B A L A N C E SM Requirements for a Good Program Set-Up –Commitment of Resources May all be Internally Supplied May be Lead and Implemented by Contractor HOWEVER, Must Include Process Knowledge which is Available for Effective Use During Development & Implementation
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35 C R E A T I N G B A L A N C E SM Requirements for a Good Program Good Software Aids in Unraveling Complexity Issues –Can Address Leak Rate Definitions –Can Document Which Programs Apply –Can Aid in Scheduling and Ensuring Monitoring is Done on Schedule –Can Aid in Ensuring Repairs Made Within Deadlines But Software is a Tool and Cannot Eliminate the Basic Challenge that the Rules are Complex.
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36 C R E A T I N G B A L A N C E SM Requirements for a Good Program Running the Program –Management Commitment to Compliance with Monitoring & Repair Deadlines is Vital –Communication between Monitoring Team, Operations, and Maintenance
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37 C R E A T I N G B A L A N C E SM Alternatives "Smart" LDAR Audible – Visual - Olfactory –Mandated –As an Alternative
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38 C R E A T I N G B A L A N C E SM Summary LDAR programs are difficult to fully implement because… –The rules are complex, and –The piping systems they are intended to regulated consist of literally thousands of components.
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