DEPOT LEVEL MAINTENANCE OF THE PROPELLANT HANDLERS ENSEMBLE

Transcription

1 DEPOT LEVEL MAINTENANCE OF THE PROPELLANT HANDLERS ENSEMBLE DENNIS J. DUDZINSKI LIFE SUPPORT MANAGER WYLE LABORATORIES (321)

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3 Maintenance Perform all levels of maintenance for all NASA and Air Force customers Inspection Repair Overhaul Rebuild/Manufacture

4 Maintenance Inventory comprised of over 10,000 pieces of equipment Protective Clothing/Hazmat Suits Cryogenic Equipment Self Contained Breathing Apparatus Emergency Breathing Equipment Airline Breathing Apparatus Medical Resuscitators

5 Operations Preoperations setup of equipment Assist onsite Donning/Doffing Equipment Large Volume over 100 suitings /day Monitor Operations Transport Suited operators Equipment/Personnel Deployment offsite

6 PPE Inventory

7 SCAPE Self Contained Atmospheric Protective Ensemble Predates Shuttle Operations (1960s) Equipment evolved to accommodate the needs for all programs Current SCAPE (Propellant Handlers Ensemble PHE) in use since 1987

8 Category I SCAPE Mobile Internal Cryogenic Air Supply (Environmental Control Unit)

9 Category I SCAPE

10 Category I SCAPE

11 Category IV SCAPE Airline Supply Portable Air Supply for Ingress/Egress

12 Category IV SCAPE

13 CATEGORY IV SCAPE

14 PHE Available in two modes Self Contained (CATEGORY I) Airline Supplied (CATEGORY IV) Incorporates many features Detachable Boots and Gloves Bubble or Flat Visor Internal Air Distribution System

15 PHE Protection Factor (PF) Testing Protection Factor Test Facility (PSTF) at Aberdeen Proving Grounds Passing percentages of 100% at a PF of 50,000 for preoperational and operational exercises

16 Maintenance Process Performed each time the ensemble is worn and restores to reusable condition Preserves established protection factors Process incorporates original design requirements and knowledge obtained by Lessons Learned

17 Cleaning Performed after each use Shower (inside and outside) with warm water and biodegradable detergent

18 Drying Drying accomplished by forced warm air

19 Visual Inspection Light Inspection (small holes) Checklist of criteria to be performed Material degradation identified Damage Includes Holes, Tears, Scuffs, Damaged Components Repairs accomplished and could include replacement of suspect fabric or rebuild

20 Performance Testing Pressure (leak) test

21 Performance Testing Relief Valve Reverse Flow (Leak) Test Mitigate vapor Intrusion during transient negative pressure effects

22 Performance Testing Airline Adapter Flow Test

23 Performance Testing Communications Test

24 Final Inspection Quality Assurance Final Acceptance Validates that all tests have been performed Performs final visual inspection Stamps approval on go tag affixed to suit

25 Boot/Glove Performance Testing Each Boot and Glove tested after use Pressurized and submerged in water Bubble leakage determines pass/fail Visual Inspection Material Degradation

26 Boot/Glove Performance Testing Glove/Boot Pressure Test

27 Ancillary Equipment Environmental Control Unit Utilizes Liquid Air (20% - 30% Oxygen) Recycle and Performance Testing

28 Ancillary Equipment Liquid Air Cart Fill, Operate and Maintain

29 Data Collection Infield Data includes: Operator/Date/Location of Operation Operator Comments/Concerns Commodity (Chemical) Used During Operation Damage noted during visual inspection Verification of Performance Test (Results)

30 Reporting Application Location/Operator-specific information Distributed to Users Enables review of operational areas, work practices or procedures for causes of damage Results in damage prevention Awareness leading to improving operational safety Tracks equipment performance

31 SCAPE INFIELD DAMAGE DAMAGE RATIO Mar- Apr- May- Jun- Jul- Aug- Sep- Oct- Nov- Dec- Jan- 06 Feb- 06 MONTH AND YEAR PERCENTAGE OF DAMAGE (RATIO)s PER MONTH BY SPECIFIC LOCATION a. Damage ratio is derived by: TOTAL DAMAGE/TOTAL RECORDED SUITINGS b. Damage is defined as operator-incurred defects during use of ensemble. YEAR MONTH MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB

32 Additional Reports Infield Performance Ad Hoc Reports

33 Anomaly Investigation Anomalies recorded during operation Investigation results Findings added to Lessons Learned Potential maintenance improvements Potential operational improvements (Safety) Potential equipment modification (Design) Potential training improvements

34 Investigation Results Examples of Findings Decontamination Shower Head Installed Backward and Tore Suit Ground Support Equipment positioned in operators path leading to recurring damage in ankle area

35 Summary Closed Loop System Equipment Designed for use in Environment Data collected during actual use Data distributed to users, maintainers and designers Continuous evolution of process to address challenges and evaluate improvements to training, ensemble design and operational processes