# Presentation: 101166

## Hyperion Mission Assurance 

***Hyperion Mission Assurance ***

***The addition of the Hyperion instrument is not impacting the overall EO-1 Mission Assurance Program except by stretching Code 303 project resources.***
***Attempting to add GSFC on-site representative at TRW to the EO-1 Hyperion instrument. ***
***Systems Assurance Manager (SAM) has written a Mission Assurance Requirement (MAR) document specifically for the Hyperion instrument.  This document is similar to the overall Mission MAR.  TRW is complying in most of the areas.***

## Hyperion Mission AssuranceQuality Assurance

***Hyperion Mission Assurance****Quality Assurance*

***Inspection and Test***
*Workmanship inspection and acceptance per TRW standards - GSFC is currently reviewing TRW’s standards for use on the hyperion instrument*
* **Test surveillance and data review*
* **In process configuration and traceability verification*
***Receiving Inspection***
* **Verification of procured piece parts*
* **Review of nonconformance documentation of internal TRW transferred hardware*
*Additional screening tests as required*
*Inspecting mechanical parts critical dimensions *

## Hyperion Mission Assurance

***Hyperion Mission Assurance***

***Safety***
*GSFC is providing support to TRW  in order to write their section of the MSPSP safety data package *
***Reliability  ***
*FMEA*
*Identification of failure modes with potential for propagation across spacecraft interfaces*
*Derating analysis review*
*Review of design engineering’s circuit analyses for consistency with established derating criteria*

## Hyperion Mission Assurance

***Hyperion Mission Assurance***

***Materials and Processes***
*TRW will provide support on as needed basis*
*Materials and Processes validated on previous design*
*Materials and Processes shall be maintained during the build of the instrument and submitted as part of the final Acceptance Data Package*
***Software***
*TRW QA will monitor software testing *
*TRW QA will conduct independent reviews and auditing*

## Hyperion Mission AssuranceParts

***Hyperion Mission Assurance****Parts*

***TRW Parts Program meets the MAR requirement of Grade 3 quality level with the exception of the magnetics (inductors and transformers)***
*No qualification testing is being performed on the magnetics.*
***Some of the part issues are as follows:***
*DC/DC Converters - DPA Concerns (low bond pulls, leak failures, and die shear failures)*
*TRW has also had DPA problems on previous lots of these parts*
*TRW stated not enough parts in the current flight lot to perform DPA*
*TRW plans to order another lot of parts.  If these are better parts, TRW will switch parts in the instrument.*

## Isolator Concerns - GSFC does not want to use TRW part because of reliability concerns.  GSFC has recommended GSFC approved replacement.
Radiation - Some disagreement between GSFC/TRW on which parts need testing, but Radiation Teams are exchanging data and resolving issues.
Part List shall be maintained during the build of the instrument and submitted as part of the final Acceptance data Package.

***Isolator Concerns - GSFC does not want to use TRW part because of reliability concerns.  GSFC has recommended GSFC approved replacement.***
***Radiation - Some disagreement between GSFC/TRW on which parts need testing, but Radiation Teams are exchanging data and resolving issues.***
***Part List shall be maintained during the build of the instrument and submitted as part of the final Acceptance data Package.***

***Hyperion Mission Assurance****Parts (continued)*

## Hyperion Mission Assurance

***Hyperion Mission Assurance***

***Supplier / Subcontractor Flowdown***
*TRW using their own internal systems to flow QA requirements down to their vendors*
*GSFC SAM has participated in a survey done by TRW QA at SSG (major subcontractor)*
*GSFC to continue to provide TRW support at SSG by continuing audits*
***Contamination Control***
*TRW to provide support to the instrument throughout manufacturing, test, and final packaging **	*
*Modification of SSTI contamination control plan for Hyperion*
*Swales Contamination Control Plan has been sent to TRW for information*