Status Report

USA SAFER Panel Meeting Minutes August 17, 2000

By SpaceRef Editor
August 17, 2000
Filed under

USA SAFER Panel


Meeting Minutes


August 17, 2000



The SAFER Panel met at JSC on August 17, 2000 in Building 1 room 376G at 10:00 a.m.

Meeting participants:


Panel Chair XA/ Anh Huynh


Panel Secretary HSMS/ Theresa Elms


Panel Members CB/Claude Nicollier


ER/ Kevin Lewis


EP/ Eric Darcy


NC/ Ron Cook


NT/ Rafiq Hashmani


USA/Armon Knight



The following items were discussed:

1. Flight Readiness


  • STS—106 (2A.2b) Manifest Support


The SAFER —305 GCAR should be signed off today — it lacks two signatures. The SAFER —305 batteries will be late shipped on 8/18/00. The batteries are scheduled to be processed at KSC on 08/22/00-08/23/00.



  • STS—92 (3A) Manifest Support


No change.



2. FIAR/DR Closure Status


  • JSC-ER0024, -305 Battery Gauge Board Electrical Short During Burn-in Test (Open 143 days)


JSC-ER0024 is closed.




  • JSC-ER0027, Thruster Firing Failure at 150 deg. F (Open 143 days)


The "explain" for JSC-ER0027 was approved for STS-106. FIAR JSC-ER0027 may be closed after the thermal enhancements are completed on all the SAFER units and after the cause for the overheating condition is resolved.



3. Configuration Control


  • Hardware/Software Configurations


No change.




  • CR Implementation


    • CR H-0670 R1, AAH LED Function Modification




The new software with the AAH LED function modification will be loaded on SAFER S/Ns 1002 and 1006 at the same time the thermal enhancements are made.





    • CR H-0683, On-Orbit Stowage Bag




EC has requested more information on the on-orbit stowage bag before assigning a subsystem manager to assume responsibility for the on-orbit stowage bag.





    • CR H-0749, SAFER On-Orbit Trainer


The On-Orbit Trainer CR and PMP are in the signature loop.



    • CR H-0752 R1 Inhibit Plug Installation Verification




ER/Kevin Lewis presented a draft presentation on the new inhibit plug installation verification design to the panel. The delivery date on the existing CR needs to be updated.





    • CR H-0753 R1 Power Switch Guard Modification




The new power switch guard design concepts are complete and will be reviewed by ER/Walt Guy on 8/18/00.





    • CR H-0760 SAFER NBL & 1-G Hi-Fi Mockup Upgrades




There are presently two problems with the SAFER tower latches:




    • One tower latch was found to be damaged but was not documented as such in the existing scope of work.

    • The mockup latches are not the flight design and do not receive calibration and preventative maintenance.



XA requested that ER provide ROMs on the following new latches:





    • 1 — set of Class I tower latches (for use as flight spares)

    • 3 — sets of Class III tower latches





XA requested that HSMS also submit a ROM on the above latches.





    • CR H-0788, -305 SAFER Battery Design, Fabrication & Implementation




The —305 battery certification testing has been successfully completed. One waiver was required for the bending radius and further evaluation will be required on three parts whose failure could each cause the battery to drain: a transistor, a resistor and an IC circuit. NX has recommended that these parts be destructively tested and optically analyzed. Also NX has recommended that the battery board be radiation tested because the previous radiation testing was performed on an X38 version of the board, which is not the exact configuration of SAFER battery board. A meeting for NX, EP, ER, NT and DX is tentatively scheduled for 08/22/00 to discuss if the destructive testing and analysis and additional radiation testing is really necessary.

EP/Eric Darcy recommended that the batteries flown on STS-106 (2A.b) be used again for STS-97.



Proposed CR’s



    • CR H-0806,-307 Rechargeable Battery CR





On hold pending funding from XA in the next fiscal year.




    • Latch Redesign



On hold until hi-fi mockup latches can be replaced with flight-like latches.




    • Extension of HCM Deployment Actuator and the Manual Isolation Valve Actuator




CR draft in work.





    • IMS Labeling

CR draft in work.


    • On-Orbit Stowage Bag Docking Loads

CR draft in work.



  1. Issues

None.


5. Special Topics


  1. None.

  1. EHB Presentation

ER/Kevin Lewis will present the new inhibit plug installation verification options to the EHB on 08/23/00.


  1. CCB Presentation

None.


  1. PRCB presentation

    2. None.

  2. Action Items


  • XA requested that ER provide ROMs on the following new latches:


    • 1 — set of Class I tower latches (for use as flight spares)


    • 3 — sets of Class III tower latches


  • XA requested that HSMS submit a ROM on the latches above.

Submitted by: Approved by:

(Original signed by) (Original signed by)


Theresa M. Elms Anh H. Huynh


SAFER Panel Secretary USA SAFER Panel

 


 


 























































































































Item

Assignee

Description

Status

06-01

C. Price

 


 


 


 


 


 


 


 


 


J. Smith

Evaluate the MPLM environment for launch/landing of the USA SAFER.

06/25/99: Assigned.


07/29/99: In review by ER. ER as needed will request additional information.


08/05/99: ER needs information on directional G-loads during launch, landing, and emergency landing.


08/06/99: Additional MPLM information was provided by OM/E. Smistad.


08/11/99: ER will provide a cost and schedule estimate for the additional stress analysis.


08/26/99: ER estimated a cost of 32K and a schedule for 2 months. The task will be initiated by XA on 10/01/99 with FY00 funding.


10/28/99: Partial funding has been sent to ER on 10/21/99 & 10/29/99. ER to complete the evaluation with an ECD of 01/03/00.


12/02/99: ER will provide a new ECD due to time needed to turn the effort on through a task order.


01/06/00: ER provided a new ECD of 03/15/00.


03/30/00: ER has requested a new ECD from LM. New ECD of TBD.


04/06/00: The stress analysis is complete. The memo will be out soon, ECD 04/13/00.


04/20/00: ECD TBD.


05/04/00: The stress analysis is in the LM signature loop.


05/11/00: LM/James Shu presented the results of the MPLM stress analysis to the Panel. James Shu will provide ER with a memo summarizing the results. ER will forward the memo to XA. XA will discuss the angular acceleration topic with the MPLM group and ER will discuss with ES.


05/12/00: ES confirmed the need to include the angular acceleration in the analysis.


05/16/00: Awaiting MPLM contact person to be provided by XA I&O lead for 5A.1.


05/18/00: ER provided the analysis performed by LM.


05/25/00: ER is waiting for a response from the MPLM stress analyst. New ECD: TBD.


06/15/00: ER will meet with the MPLM contact person on 06/15/00.


06/22/00: The MPLM stress analysis is presently in review with the MPLM stress analyst.


07/13/00: The MPLM stress analyst (Satya Pilla) has provided additional MPLM launch/landing environment information. James Shu is reviewing the environment information.


07/20/00: The MPLM stress analyst has indicated that the SAFER can be launched in the MPLM. XA is waiting on the official confirmation from the MPLM group.

07-04

K. Lewis

Provide a video recording of 1) NSI/Pyro Valve firing, 2) dry valve seating, 3) wet valve seating, 4) dry valve self-test, and 5) wet valve self-test.

06/25/99: Assigned as action 02-03 at the STS-96 USA SAFER IFA Investigation meeting.


07/09/99: Transfer action to USA SAFER Panel.


08/05/99: Recording completed except for NSI/Pyro Valve firing. ECD of TBD, pending available opportunity.

00-02-08

K. Lewis

 


 


 


 


 


 


 


A. Huynh

ER will initiate a stress analysis to determine how far the HCM deployment actuator and manual valve can be extended.

02/17/00: Assigned. ECD TBD.


02/24/00: EV/James Shu stated that the SAFER actuator supporting bracket needs to be changed if the actuator is extended.


05/04/00: The stress analysis is on hold while the small and x-large EMU managers perform SAFER reach evaluations with suited subjects to determine how far to extend the actuators. ECD: 05/19/00.


05/25/00: XA will initiate a CR for 2" extension to the actuators.

00-04-11

P. McCartney

K. Vassigh

Provide a video of the on-orbit trainer evaluation (SSC) as shown at the VRL and more technical information on the data rate specifications.

04/20/00: Assigned. ECD TBD.


06/15/00: DX will record on-orbit trainer evaluation (SSC) on video. ECD TBD.

00-05-01

K. Lewis


T. Elms

 


 


 


 


 


 


A. Huynh

ER will evaluate SAFER launch/ landing loads in the SpaceHab. HSMS will locate SpaceHab Load Requirements.

05/04/00: Assigned. ECD 05/20/00.


05/25/00: XA provided launch/ landing load requirements to ER. Waiting for ER discussion with contact person from SpaceHab. ECD of 06/01/00.


06/15/00: ER/Kevin Lewis requested James Shu contact the LESC stress analyst to determine if the IDD document prepared by LESC includes angular accelerations for the SpaceHab loads. XA will investigate if different loads apply to the SpaceHab rack. New ECD TBD.


06/29/00: SpaceHab determined that SAFER will not be stowed in the rack, only on the floor. ER is expected to complete the loads analysis by 07/25/00.


08/10/00: Report is completed and is ready for distribution, ECD 08/17/00.


08/17/00: ER has received a copy of the loads analysis report. ER will send a copy of the executive summary page to XA. New ECD: 8/24/00.

00-05-06

K. Lewis

ER will determine the cost to build one more flight SAFER.

05/18/00: Assigned. ECD 06/16/00.


06/22/00: New ECD: TBD.


06/29/00: XA requests that ER look into getting a contractor to build another flight SAFER.


07/13/00: New ECD: 9/30/00.

00-05-07

K. Lewis

 


T. Elms

ER will investigate the problem with the weight relief lifting sling and the SAFER latches.

05/18/00: Assigned. ECD 06/01/00.


05/25/00: HSMS will verify that a comprehensive procedure is used to operate the weight relief lifting sling in order to prevent any damages to the SAFER latches.


06/15/00: New ECD 07/06/00.


07/06/00: HSMS determined that a comprehensive procedure to operate the weight relief lifting sling did not exist and that one needed to be written and released as a SSA Class III operational procedure. ECD 08/18/00.


07/13/00: HSMS has written a procedure detailing how to attach the SAFER to the EMU when using a weight relief lifting sling. The procedure is presently in review with Steve Anderson of the SSI group.


07/20/00: HSMS/T. Elms received comments to incorporate from ILC/Steve Anderson. Next the procedure needs to be reviewed by ER.


07/27/00: HSMS is searching for a picture showing the EMU/SAFER in the weight relief-lifting sling.


08/10/00: HSMS sent the procedure to ER/Kevin Lewis for review on 08/07/00.


08/17/00: HSMS will rewrite the procedure "real-time" as Gail Steel performs the steps on the engineering unit. New ECD: 8/31/00.

00-06-01

K. Lewis

ER will provide DX with a video tape of the following operations for training:


  • Power switch guard installation & removal


  • Hand controller stowage


  • SAFER Checkout


  • SAFER Latch Operation (don/doff SAFER to PLSS; l use a USA/FCE

class III PLSS & SAFER engineering unit)


  • Inhibit Plug installation and removal


  • SAFER Battery Changeout

SAFER Transfer/Stow ops (both the launch/entry and on-orbit stowage bags from USA/FCE)

06/15/00: Assigned. ECD TBD.


07/13/00: DX and ER will develop a mutually agreed schedule to complete the activities.



00-07-02

K. Lewis &


A. Knight

ER/Kevin Lewis and USA/Armon Knight need to develop a fitcheck plan for STS-92 (3A).

07/06/00: Assigned. ECD:07/20/00.


08/10/00: New ECD: 09/15/00.

00-07-04

K. Lewis & E. Darcy

Provide delivery dates for the 4th battery for STS-106 and for the remaining 16 batteries to be transferred to USA.

07/13/00: Assigned. ECD 07/27/00.


08/10/00: The 4th battery was received on 08/09/00. Delivery date for the remaining 16 batteries is still required. New ECD:TBD.


08/17/00: EP/Eric Darcy provided delivery dates for the remaining 16 batteries:


8 batteries to be delivered on 10/27/00 and 8 batteries to be delivered on 02/28/01. Closed.

00-07-05

M. Hembree

Investigate if the ERCM will be used in an EVA before the DTO, creating a glove cut hazard on the tether.

07/20/00: Assigned. ECD 08/10/00.

00-07-06

All

Submit any post-flight DTO questions for the STS-92 crew to DX/Mike Hembree.

07/20/00: Assigned. ECD 08/10/00.

00-07-07

D. Tani


C. Nicollier

Provide a consensus on DTO pass/fail criteria for STS-92 DTO 689.

07/20/00: Assigned. ECD 08/10/00.


08/17/00: New ECD: 08/31/00.

00-07-08

M. Hembree

Provide a DTO backup plan in case of RMS failure.

07/20/00: Assigned. ECD 08/10/00.

00-08-01

K. Lewis

Provide a summary of the software DCR to XA.

08/03/00: Assigned. ECD TBD.

00-08-02

K. Lewis

Provide a formal memo to DX/Mary Fitts before STS-106 that gives the status for each SAFER unit.

08/03/00: Assigned. ECD TBD.


08/17/00: New ECD: 09/01/00.

00-08-03

E. Darcy

Provide a work instruction for inspection of incoming electrical parts.

08/03/00: Assigned. ECD 09/11/00.


08/17/00: New ECD: 09/01/00.

00-08-04

E. Darcy

Contact Dave Homan or Jeff Hoblit/VRL to determine whether the battery simulation in the VRL is realistic.


08/03/00: Assigned. ECD 09/11/00.


08/17/00: New ECD: 08/25/00.

00-08-05

K. Vassigh

Determine the weight of the laptop and the HCM to be put on the CR.

08/10/00: Assigned. 08/24/00.

00-08-06

K. Lewis

Provide a ROM on the following new latches:


1 — set of Class I tower latches


3 — sets of Class III tower latches

08/17/00: Assigned. ECD TBD.

00-08-07

C. Mooty

Provide a ROM on the following new latches:


1 — set of Class I tower


3 — sets of Class III tower latches

08/17/00: Assigned. ECD TBD.
       

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