HAZARD ANALYSIS GUIDELINES



The following hazard analysis guidelines were extracted from the Lewis Product Assurance Instruction (PAI) #220, Hazard Analysis Preparation, and MIL-STD-882, System Safety Program Requirements, and are targeted for experiments and systems involved with aircraft flight operations. These guidelines are intended to help the researcher define hazard analysis, identify hazards in research hardware and procedures, and prepare the hazard analysis required for the experiment safety documentation. A hazard analysis is required for any hazardous condition related to the experiment or to the operation of the aircraft during the proposed experiment.


  1. Purpose

  2. Scope

  3. General

Definitions

  • Procedure



    ATTACHMENT 3.2.3
    FLIGHT RESEARCH RISK ASSESSMENT CODE MATRIX (MIL-STD-882)

    The risk assessment matrix is based on MIL-STD-882: Generally, for a hazard to be acceptable it should merit a risk code of 10 or more. Hazards with a risk code of 6 through 9 normally require additional acceptance by the Executive Safety Board for the program or experiment to be performed. Risk codes of 5 or lower indicate unacceptable hazards.

    ######################################################################## #####################
    
    SEVERITY ________________________________________________________________________ _____________________ I II III IV CATASTROPHIC CRITICAL MARGINAL NEGLIGIBLE PROBABILITY A) Frequent 1 3 7 13 B) Probable 2 5 9 16 C) Occasional 4 6 11 18 D) Remote 8 10 14 19 E) Improbable 12 15 17 20 ######################################################################## ##################### SEVERITY CATEGORY DEFINITION Catastrophic I Death or system loss Critical II Severe injury, severe occupational illness, or major system damage Marginal III Minor injury, minor occupational illness, or minor system damage Negligible IV Less than minor injury, occupational illness, or system loss ######################################################################## ##################### PROBABILITY LEVEL DEFINITION Frequent A Likely to occur frequently Probable B Will occur several times in life of an item Occasional C Likely to occur sometime in life of an item Remote D Unlikely, but possible to occur in life of an item Improbable E So unlikely it can be assumed occurrence may not be experienced ATTACHMENT 3.2.3 (2) Flight Research Hazard Analysis DC-9 Reduced-Gravity Aircraft Program _______________________________________________________________________ ______________________ Experiment Title Date _______________________________________________________________________ ______________________ Hazard (Describe the event that will directly produce the injury or damage. Describe the nature and extent of the injury or damage.) _______________________________________________________________________ ______________________ Causes (Describe the circumstances and events leading up to the hazard.) _______________________________________________________________________ ______________________ Controls (Describe design features and procedures that will be used to reduce the hazard's probability and/or severity. List any testing that will be done to verify the controls' effectiveness.) _______________________________________________________________________ ______________________ Risk Assessment (Assess the risk by using the MIL-STD-882 matrix (Attachment 3.2.3 (1)). Base the assessment on the controls producing the planned effects of the hazard's probability and/or severity. Severity Category:_______ Probability Level :_______ Risk Assessment Code:_______ _______________________________________________________________________ ______________________ Analysis of Prepared by / Date Checked by / Date Operations Program Final Mgr.Date Design HAZARDS IDENTIFICATION GUIDE RESEARCH ____________________________________________________________________________ _________________________________________ PROGRAM ____________________________________________________________________________ _________________________________________ A broad topical list of experiment related areas requiring examination to identify potential hazards has been included below. Additional areas expmined will be noted in the "Other" category. Interaction with aircraft hazards must be considered. ____________________________________________________________________________ _________________________________________ HAZARD EXAMINATION ANALYSIS AREA COMPLETED REQUIRED ____________________________________________________________________________ _________________________________________ Experiment Fire/ Explosion ____________________________________________________________________________ _________________________________________ Experiment Structural Strength ____________________________________________________________________________ _________________________________________ Loss of Power Source(s) ____________________________________________________________________________ _________________________________________ Over/Under Pressure ____________________________________________________________________________ _________________________________________ Overtemperature ____________________________________________________________________________ _________________________________________ Overspeed ____________________________________________________________________________ _________________________________________ Adequate Ventilation ____________________________________________________________________________ _________________________________________ Electrical Shock ____________________________________________________________________________ _________________________________________ Electrical Shielding ____________________________________________________________________________ _________________________________________ Electrical Circuit Protection ____________________________________________________________________________ _________________________________________ Control of Combustible or Explosive Mixture(s) ____________________________________________________________________________ _________________________________________ Guards Over Live Parts ____________________________________________________________________________ _________________________________________ Equipment Shielding Against Impact ____________________________________________________________________________ _________________________________________ Personnel Protection ____________________________________________________________________________ _________________________________________ Toxicity ____________________________________________________________________________ _________________________________________ Radiation ____________________________________________________________________________ _________________________________________ Bodily Injury ____________________________________________________________________________ _________________________________________ Noise ____________________________________________________________________________ _________________________________________ Fire ____________________________________________________________________________ _________________________________________ Other ____________________________________________________________________________ _________________________________________ Buddy System ____________________________________________________________________________ _________________________________________ Researcher Workload ____________________________________________________________________________ _________________________________________ Researcher/Aircrew Communications ____________________________________________________________________________ _________________________________________ Other ____________________________________________________________________________ _________________________________________ HAZARD IDENTIFICATION COMPLETED ( Research Program Manager) Date ________________ ________________ ________________ ________________ ________________ ________________ ________________ _____

    Last Updated 7/18/95 by Jim Withrow