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GSFC Electrostatic Discharge (ESD) Control Program Are you plugged in? Jeannette Plante, Program Manager, Code 300

GSFC Electrostatic Discharge (ESD) Control Program Are you plugged in? Jeannette Plante, Program Manager, Code 300. An ESD event is a sudden discharge of stored voltage (charge) through a circuit path to ground.

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GSFC Electrostatic Discharge (ESD) Control Program Are you plugged in? Jeannette Plante, Program Manager, Code 300

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  1. GSFC Electrostatic Discharge (ESD) Control Program Are you plugged in? Jeannette Plante, Program Manager, Code 300
  2. An ESD event is a sudden discharge of stored voltage (charge) through a circuit path to ground. This event will damage sensitive circuitry. Failure may be instantaneous or delayed. Working conditions determine event type. Event type determines protection method. Source: White Paper 2: A Case for Lowering Component Level CDM ESD Specifications and Requirements, Industry Council on ESD Target Levels, March 2009
  3. Protection Method Depends on ESD Event Types Human Body (HBM): discharging event through the body and the part to ground. Machine (MM): discharge voltage through automated handling equipment or hand-tools and the part to ground. Charged Device (CDM): discharge into or out of a part due to charge accumulation within the part itself.
  4. The goal is to: Prevent charge accumulation Triboelectric charging is avoided, electric fields are monitored and controlled. Enable accumulated charge to discharge with a controlled, low current. Dissipative materials are used to enable accumulated charges to readily find a “gentle” discharge path that keeps current low.
  5. NASA Quality Assurance Program Policy (NPD 8730.5) ANSI/ESD S20.20 for ESD Control The Organization shall establish, document, implement, maintain and verify the compliance of the ESD Control Program in accordance with requirements of this document. GSFC Policy for Electrostatic Discharge Control (GPR 8730.6) GSFC-WM-001 is applicable to all organizations where ESD sensitive electronic components for flight applications, including engineering and test models, and Ground Support Systems, are tested, assembled, inspected, stored, or otherwise processed in a laboratory environment. In-house builds only GSFC-WM-001, Workmanship Manual for Electrostatic Discharge Control (Excluding Electrically Initiated Explosive Devices)
  6. Where is GSFC-WM-001 ?!? It’s not in GDMS GSFC-WM-001 lives in the Code 300 configuration management system. An easy link to remember is: http://sma.gsfc.nasa.gov/workmanship/ Then click on Hot Links
  7. GSFC-WM-001 : Are You a Participant? Program Manager: Manages program including ownership of GSFC-WM-001 and GPR 8730.6; certifies ESD protected areas (EPA) (Code 300) Program Manager Delegate: Certifies EPAs (Code 300, 800) Subject Matter Expert: Helps navigate non-standard conditions (Code 300, 500, 600). Workmanship-------------------------------------------------------Project Personnel Program Monitor: Local owner of ESD protected area (EPA), designs and safeguards EPA, monthly verification measurements, special training, retraining biennially (Code 200, 500, 600) Operator: Local user of an EPA, special training, retraining biennially (Code 200, 300, 400, 500, 600)
  8. GSFC-WM-001 : Are You a Participant? cont. Visitor: Access to EPA overseen by Program Monitor Supervisor: certifies Program Monitor, Operator, Trainer; revokes/restores certification where there is a problem Trainer: Level A at GSFC Training Center, Level B at GSFC. Level B trainer takes retraining biennially.
  9. Training GSFC School   http://www.honeywell.com/workmanship Operator: 4 hr class, overview, demonstrations [ESD] Program Monitor: 12 hr class, overview, hands-on exercises, demonstrations. Requiredfor Bench Certification Level B Instructor: 16 hr class, overview, hands-on exercises, demonstrations, instruction materials provided Classes held on Center and in Columbia Instruction is to GSFC-WM-001 !!! PRE-REQUISITE !!!
  10. Primary EPA Certification Sub-Processes Inputs EPA equipment EPA design Bench/EPA to be Certified ESD Class Requirements Requestor Information Wm-001 Trained ESD Certifier personnel (ESD Program Manager/Coordinator Contact Information) Charge Number Physical Access to Area Need Date Inputs Schedule Certification ESD Certifier personnel assignment Calibrated ESD test measuring equipment ESD Control Program Certification Log Certified ESD Program Monitor Bench/EPA to be Certified ESD Class Requirements Requestor Information (ESD Program Manager/Coordinator Contact Information) Charge Number Physical Access to Area Need Date Inputs Certified ESD area CSO or designated representative Wm-001 ESD Certified personnel (Table 7-1 ESD Control Program Verification Schedule and required Measurements) Monthly Log Records Inputs Certified ESD Program Monitor (Calibrated ESD test measuring equipment) (Frequency of verifications in accordance with Table 7-1 ESD Control Program Verification Schedule and required Measurements) On-going Surveillance Pre-Assessment Audit Monthly Verifications EPA Certification Outputs Validation of Compliance to Requirements (ESD Control Program Certification Log completed with signature of Lab Mgr/Program Monitor and Certifier) Certification Sticker attached to work area Program monitor’s copies of EPA Test Log Program Monitor’s and Requestor’s copy of Assessment Report ESD Control Program Database Record of EPA Certification Results Outputs (Assignment of Certified ESD Program Monitor) Validation of Compliance to Requirements Pre-Assessment report if needed Action to schedule Certification Outputs Ensure compliance to Wm-001 requirements Alert to ESD Control Program of non-conforming EPA Outputs Completed EPA Test Log
  11. The Lab Certification Process Steps * Problem Area Design Engineer defines ESD sensitivity level Bench/Area is assigned a Program Monitor Program Monitor takes training (biennially) Supervisor signs back of training card certifying PM (biennially) Program Monitor sets up ESD area to meet sensitivity level need and GSFC-WM-001 requirements Program Monitor calls Workmanship to get bench/area certified Workmanship audits area, fills out results form, gets signatures of PM, Lab Manager Workmanship identifies non-compliances and gives two weeks for corrections. As work proceeds (1 day, 1 week, 1 month, 1 year) CSO and QE ensures area stays in compliance and monthly Program Monitor verifies area compliance monthly on log. * Problem Area * Problem Area (Root Cause of others) * Problem Area * Problem Area
  12. The Lab Certification Looks For Full Certification Assessment: Workstation Measurements Grounding Verifications and Techniques Surface Resistivity Air Ionizer performance Continuous Monitoring System functionality Equipment availability and condition Area clear of insulative materials unnecessary items (papers, food, etc) Documentation and Reporting Workstation Certification Measurements Lab Certification Assessment Report/Action Items Workstation Identification (Stickers on benches and chairs) Code 300 certification stickers contain no due dates. Do not apply monthly verification stickers over the Code 300 stickers!
  13. Program Monitors Do andCSO’s and QE’s Look For Following certification these will always apply: Continued ESD practices are being followed by personnel operating in and entering the ESD controlled areas. ESD sensitive hardware is properly handled in an ESD controlled area or stored in protective packaging/containers. Continued Training and Certification of personnel. Monthly Workstation measurements are conducted IAW GSFC-WM-001B. A clean and orderly work environment is maintained Housekeeping Workstation cleanliness Only ESD safe chairs are in the ESD safe zone. Proper cleaning and verification of ESD garments. Equipment is maintained in good condition and is under current calibration.
  14. ESD Program Control Resources http://sma.gsfc.nasa.gov/workmanship Click on ESD Resources for POC’s, presentations, links to GSFC standard http://sma.gsfc.nasa.gov Scroll down and click on left menu bar link New Electro-Static Discharge Resources for POC’s, ANSI/ESD documents.
  15. ESD Garments ESD garments must meet contamination -and- ESD requirements. Projects MUST Contact Code 549 or Workmanship to obtain new garments. Past sources supplied garments that contained silicones on zippers and residues on conductive clean-room bootie soles. We now rent all garments from one cleaning company and perform routine sample inspection of product.
  16. Questions? Source: http://www.michaelyon-online.com/the-kopp-etchells-effect.htm(named by Michael Yon in honor of fallen fellow soldiers)
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