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Lawrence Livermore National Laboratory

Nonnuclear Safety Analysis Program ISM Best Practices Workshop September 11 – 13, 2006 Charlotte van Warmerdam UCRL-PRES-224084. Lawrence Livermore National Laboratory. Introduction. Drivers for Change Changes to previous nonnuclear safety analysis process driven by:

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Lawrence Livermore National Laboratory

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  1. Nonnuclear Safety Analysis Program ISM Best Practices WorkshopSeptember 11 – 13, 2006Charlotte van WarmerdamUCRL-PRES-224084 Lawrence Livermore National Laboratory

  2. Introduction • Drivers for Change • Changes to previous nonnuclear safety analysis process driven by: • NNSA/LSO and LLNL’s commitment to update Work Smart Standard • UC FY03 contract, Appendix F, Performance Measures • ISM Verification Team

  3. Introduction • Products of Change • New Nonnuclear Safety Analysis Standard in LLNL Work Smart Standard set – establishes the framework requirements • New LLNL ES&H Manual, Document 3.1 – establishes guidance & methodology

  4. Background • Philosophy • Classification of LLNL nonnuclear facilities is based on the potential for operations to adversely impact the health of colocated workers and the public, using the definitions for Temporary Emergency Exposure Limits (TEELs) as a framework • The extent and depth of safety basis documentation are correlated to risk level.

  5. Background • Temporary Emergency Exposure Limits (TEELs) • TEEL-0 No appreciable health effects • TEEL-1 Mild, transient adverse health effects or perception of objectionable odor • TEEL-2 No irreversible or other serious health effects or symptoms that could impair protective action • TEEL-3 No life-threatening health effects; however, serious, potentially irreversible health effects or symptoms, and possible impaired ability to take protective action.

  6. Industrial Biological Chemical Explosive Radiological Background • Hazard Types

  7. Background • Classification Levels • Office • Light Science & Industry (LSI) • Low • Moderate • High

  8. Safety Analysis Process • Nonnuclear Safety Analysis Steps • Defining facility • Office listing process • Screening process • Higher analysis steps • Hazard analysis • Accident analysis • Control selection

  9. Classification (part of screening process) • Hazard Classification • Compare maximum inventory or hazard level for each hazard type against the classification criteria within LLNL ES&H Manual, Document 3.1, Table 6. • Facility Classification • Select the highest hazard among the five hazard types as the facility classification.

  10. Classification (part of screening process) • Classification Criteria - Document 3.1, Table 6 • Establishes hazard thresholds for each of the hazard types at each facility classification level. • Biohazard - based on highest biosafety level in facility • Radiological - based on sum-of-the-ratios of radionuclides • Explosive - based on United Nations Organization hazard classes and DOE Explosives Safety Manual • Industrial - based on potential health impacts • Chemical - based on TEEL values of chemicals

  11. Classification (part of screening process) • Chemical Classification Criteria Changed the Most • Classification criteria are now based on health-impact- related standards (TEELs) rather than on environmental standards (RQ, TPQ, etc.)

  12. Release Plume Source Facility Public Colocated Worker Q-Level (Material) TEEL Hazard Level 100-M Hazard Screening - Chemical

  13. Hazard Screening — Chemical • Zone Map • Identifies LLNL facilities and their proximity to the fence line (public). • Establishes zones at predetermined default distances: 100m, 200m, 300m, and 600m. For Site 300, also 1100m.

  14. Hazard Screening — Chemical • Chemical Classification Approach • TEEL values • At specific default distances from point of release • Back-calculated to obtain allowable maximum chemical inventory quantities (Q values) for each chemical • Chemical Quantity List (Q List) • Determines the maximum chemical inventory for each of the classification levels • Based on Temporary Emergency Exposure Limit (TEEL) values (posted on DOE’s Chemical Safety Office website: http://tis.eh.doe.gov/web/chem_safety)

  15. Hazard Screening — Chemical

  16. Hazard Screening — Nitric Acid 5500kg at 280 meters

  17. Hazard Screening - Chemical • Electronic Chemical Classification Application • ECCA is a tool to help automate chemical classification and develop Maximum Facility Inventory Limits (MFILs). • MFILs can be downloaded from ECCA to ChemTrack for inventory monitoring.

  18. Conclusion • Advantages of change • More defensible health-impact-based analysis • Chemical limits derive from DOE Sponsored TEEL list • Use of “graded approach” for assessing facility hazards • Newly derived chemical limits can be monitored through LLNL’s existing ChemTrack system

  19. Conclusion (continued) • New methodology is 50% implemented at LLNL • Full Implementation will occur on December 31, 2008 • For further questions contact me at: • (925) 423-0223 or • vanwarmerdam1@llnl.gov

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