Nonnuclear Safety Analysis Program ISM Best Practices Workshop September 11 13, 2006 Charlotte van W

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Nonnuclear Safety Analysis Program ISM Best
Practices WorkshopSeptember 11 13,
2006Charlotte van WarmerdamUCRL-PRES-224084

• Lawrence Livermore National Laboratory

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Introduction

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

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Introduction

• Products of Change
• New Nonnuclear Safety Analysis Standard in LLNL
  Work Smart Standard set establishes the
  framework requirements
• New LLNL ESH Manual, Document 3.1 establishes
  guidance methodology

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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.

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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.

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Background

• Hazard Types

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Background

• Classification Levels
• Office
• Light Science Industry (LSI)
• Low
• Moderate
• High

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Safety Analysis Process

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

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Classification (part of screening process)

• Hazard Classification
• Compare maximum inventory or hazard level for
  each hazard type against the classification
  criteria within LLNL ESH Manual, Document 3.1,
  Table 6.
• Facility Classification
• Select the highest hazard among the five hazard
  types as the facility classification.

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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

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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.)

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Hazard Screening - Chemical
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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.

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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 DOEs Chemical Safety
  Office website
• http//tis.eh.doe.gov/web/chem_safety)

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Hazard Screening Chemical
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Hazard Screening Nitric Acid
5500kg at 280 meters
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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.

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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 LLNLs existing ChemTrack system

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Conclusion (continued)

• New methodology is 50 implemented at LLNL
• Full Implementation will occur on December 31,
  2008
• For further questions contact me at
• [phone] or
• vanwarmerdam1_at_llnl.gov