EVA Tools and Crew Aids Panel Minutes of Meeting 19 Mar 2001
The EVA Tools and Crew Aids Panel met at JSC on March 1219, 2001, in Building 1, Room 360, at 1:00 p.m. Representatives from the following organizations participated:
EVA Project Office
Hardware Development
Integration and Operations
Engineering Directorate
Crew and Thermal Systems Division
FCE EVA
Safety, Reliability and Quality Assurance Office
Hamilton Standard Management Services
Lockheed Martin
Panel members from the following organizations participated:
XA/Panel Chair, XA/Panel Secretary, XA Integration and Operations, CB/Astronaut Office, DX3/EVA, Robotics, and Crew Systems Operation Division, EC5/Crew and Thermal Systems Division, FCE/EVA, and NA/SR&QA.
The following items were presented:
- PRACA Status — NS43NS43/G. WrightT. Miller
Fifteen Sixteen FIAR’s are open for EVA hardware. Four Six FIAR’s were reported as past due and statused as follows:
JSCEC0848F — Equipment Hook. Inadvertent Equipment Hook release.
PIA’s in work on everything with hook. Still looking at 2 assemblies. Request 1 more week.
JSCEC0849F — Safety Tether. Slow retract of tether.
To doEC5 requested to ROM two more concepts. to reduce length of tether. Once ROM received and crew/MOD concurs, FIAR can be closed. Unless found to be an overriding safety concern, no plans for mod or redesign.Crew may use "as is". Not enough definition on what is wanted. To discuss after Panel with XA/G. Lutz.
JSCEC0841 — PFR Gimbal Assembly. Roll joint buttons binding.
Possible processing problem with dry lube application.Doing DCN to drawings to clarify process. Sending back to contractor for better wording.
JSCEC0852 — Equipment Hook. Bail level sticking. Bail level did not perform smoothly and did not stick open.
New build failed initial PIA.Hardware not taken apart.
JSCEC0850 — Safety Tether. Discoloration of Safety Tether.
Analysis back. All AOUV. No problem with discoloration. Will do leak test.
JSCEC0842 — MMWS Gimbal Assy. Fraying of end effector cord.
Need to initiate CR to roll dash number. Funding problem.
One new FIAR was reported:
JSCEC0859 — Socket Caddy. STS-98 Anomaly — Socket Caddy configured with a PIP Pin with a recessed actuator button which poses an accessibility problem during EVA operations.JSCEC0863F — Modular Gimbal Assy. During STS-98 EVA’s it was noticed that the end effector was sticking and not closing.
Hardware back and preliminary done. Something "funny" with this particular unit. Either wear in piece part or piece part out of spec. Will do interim for 6A today.
CLOSED.
TThe following STS-100 FIAR’s wasere statused for STS-100:
BFCE029F105 — Pistol Grip Tool (PGT). PGT chatter.JSCEC0871F — 5/16" Wobble Socket (HST). 5/16" Wobble Socket detaching from PGT during STS-103 EVA.
To generate DR’s to close.
The following STS-105 FIAR’s were statused:
BFCE026F005 — Disk/Loop Pin Puller Tool Caddy. Broken tether cord.
GFE to status at 3/21/01 EHB.
BFCE029F105 — Pistol Grip Tool (PGT). PGT chatter.
Waiting for video. CB, MOD, I&O to be brought in to review. To do interim thru 7A.
Preliminary closure in work. Still had chatter on 5A. Look at closing "as is".
EC5/B. Greene presented a FIAR Status on JSCEC0853F — Bayonet Receptacle.
STS-92 and STS-98 crew experienced excessive loads required to remove hardware from Bayonet Receptacles on the Modular Mini-workstation T-Bar and Swing Arms.
The following STS-104 FIAR’s were statused:
JSCEC0839 — REBA Charger. REBA failed to show green LED during acceptance testing.
Going to vendor end of March to get root cause closure.
JSCEC0841 — PFR Gimbal Assembly. Roll joint buttons binding.
Need to get with EM for root cause.
JSCEC0842 — Modular MWS Gimbal Assy. Fraying of end effector cord.
In work. Cost substantial.
JSCEC0781F — 5/16" Wobble Socket (HST). Socket detaching from PGT during STS-103 EVA.
Funded. Design change complete. Close out.
JSCEC0848F — Equipment Hook. Inadvertent equipment hook release.
Should have final by next week.
JSCEC0850 — Safety Tether. Discoloration of safety tether.
Test results by 3/19/01.
The following STS-104 SAFER FIAR was statused:
JSCER0035 — USA SAFER. SAFER battery erratic current readings.
Currently on-orbit. Will not get back until 6A lands. Will need month to do assessment.
The EVA hardware oldest FIAR, opened against the Adaptive Payload Carrier, is 547 561 days old.
FIAR’s open by flight:
STS-102 0
STS-100 22
STS-104 1011
STS-105 1315
- Cert Status — NC52/G. Wright
All certification is closed for STS-102.
There are three open SAFER hardware certifications for STS-100 — 2 on the SAFER IVA Battery (-305 and -307), and SAFER Battery upgrade. These are pending GCAR updates for closure.
There are 22 open hardware certifications for STS-104, all "green".All hardware certifications are closed for STS-100. There are 20 open hardware certifications for
STS-104. There are no open hardware certifications for STS-105.
- Mission Hardware Status — LM/F. BlissK. Thomas
- Actions Review — XA/G. LeStourgeonD. Roberts
- Pending CR Review — XA/G. LeStourgeonD. Roberts
- HITS Status Review — XA/J. Manning
The following Mission Hardware Status was presented:
STS-102: All hardware has been delivered for flight.
STS-100: STS-98 hardware was received from USA on 3/2/01, and is being processed for the STS-100 Bench Review on 3/16/01. Roughly 20% of Bench Review hardware has been shipped. The other hardware will be sent as it is processed.
STS-104: All hardware was delivered to support the Airlock Bench Review, scheduled for 3/2/01.No hardware status was presented.
This item was deferred.
The following actions were statused:
Action 2/5/01-1 — Revise STS-109 ESEL to justify any adds and return to Tools Panel with inventory story.
CLOSED.
The Chairman requested minutes from the 2/5/01 Tools Panel to review actions assigned.
This item was deferred.
The weekly "stoplight" HITS Metric Report was presented. This report shows hardware and/or service/support delivered, on schedule, and not meeting planned delivery date or program need date. Open for 6A is the Top-Mounted Passive WIF Assy. Not meeting program need date for 7A is the General Purpose Cutter Replacement Unit. All hardware deliveries are within required dates for 7A.1.
This item was deferred.
- Gage Status — EC5/K. Hostetler
- H-0959 – HST PFR Starboard APC Integration — XA/J. DuttonH-0893R1 — Update STS-105 (7A.1) Tools ESEL — XA/R. Fair
This status will not be presented until the monththe first Monday of April.
The APC carrying the HST PFR, PFR extender and jettison handle had to be moved from Port Bay 13 to Starboard Bay 10. This CCBD requests fabrication of a new short shaft, drawing updates, loads models, and building up the starboard configuration to support HST PFR starboard APC integration for STS-109.This Revision 1 to the STS-105 Tools ESEL contains required updates, part number and serial number revisions, and changes to stowage locations.
Decision: Route for technical concurrence.
- H-0725R2 — Modify Camera Mount Assembly with Equipment Hook — Stop Work — XA/L. Crocker H-0965 — ISS Block Buy Procurement of Microconicals and WIF’s — XA/K. O’Brien
Three Camera Mounts have been reconfigured with the -302 Equipment Hook per Rev 1 of this CR. No additional work is to be done to reconfigure the remainder of the fleet. A new EVA Camera Mount has been developed that the crew prefers. USA is to keep three Camera Mounts, P/N 10159-10009-04, in USA inventory for use until the remainder of the new Camera Mounts are delivered.This CCBD requests 25 microconical fittings, with 3/4" hole, 50 microconical fittings, flanged, and 10 side-mounted passive WIF’s to satisfy requirements of ISS SSCN 4958. This block buy is intended to provide a cost savings and create inventory for a quick response to future ISS requirements. ISS needs to specify if past Microconical and WIF requests are to come from this block buy, specifically,
- 1 Side Mounted WIF, requested per SSCN 3728
- 20 Microconical Fittings, 3/4" hole, requested per SSCN 3728
- 15 Microconical Fittings, flanged, requested per SSCN’s 3728 and 4313.
Decision: Route for technical concurrence.
- H-0648R5 — Revise STS-100 ESEL (ISS 6A) — XA/R. FairWalk-on: STS-100 (6A) Tool-to-Tool Fitcheck Status for EVA CoFR2 — HSMS/A. Hall
This presentation outlines the total number of fitchecks remaining open for STS-100 (6A). This will be presented at the EVA CoFR2 on 3/20/01 and a CR written to document approval of the open fitchecks.
This Revision 5 to the STS-100 ESEL contains required configuration updates. No quantity changes are included.
Decision: Route for technical concurrence.
- H-0668R7 — Update STS-102 (5A.1) Tools ESEL — XA/A. Mears
- H-858R1 — Update STS-102 Tool-to-Tool Fitcheck Matrix — HSMS/J. Case
- H-0960 — STS-102 Open Tool-to-Tool Fitchecks — HSMS/J. Case
This Revision 7 to the STS-102 ESEL contains various serial number updates and deletes the return of SAFER’s and associated hardware.
Decision: Route for technical concurrence.
Initiate CR and present to 3/21/01 EHB.
This CCBD updates the STS-102 Tool-to-Tool Fitcheck Matrix to reflect the STS-102 Rev 7 Tools ESEL.
Decision: Route for technical concurrence.
This CCBD requests EHB concurrence on accepting the risk of not performing all tool-to-tool fitchecks for STS-102. Root cause of the inability to complete the fitchecks is late addition of tools to the flight, new hardware builds, and hardware logistics disconnects and planned operational use. Fitcheck status was presented to the STS-102 EVA FRR, held 2/27/01. In the future, all fitcheck status is to be documented prior to FRR.
Decision: Forward to 3/7/01 EHB.
- Extension of USA SAFER Sliders — ER/K. Lewis
Background: Due to the design of the Small EMU and EMU Planar HUT, some crewmembers may be unable to operate the manual isolation valve or deploy the HCM to initiate a self-rescue without extending the sliders forward.
This presentation is in response to action requirements contained in H-0906 – Extension of USA SAFER Sliders. The action called for ER to provide cost and schedule estimates for the following:
- Developing a viable design concept for moving the SAFER slider mechanisms forward 2 inches.
- Developing the detailed design, fabrication, and certification plan for the new concept.
- Retrofitting the Class I SAFER fleet and the Class III SAFER Engineering Unit with the modifications.
- Updating the required documents as appropriate.
A review of the SAFER drawing list has identified 49 drawings that will require modification or replacement to implement the change, with a possibility of more being identified during the design process. The structural redesign will require new stress and thermal analyses and a repeat of development and certification test programs.
Several issues were also brought forward. Modifications will require change of HCM deployment, causing SAFER to violate PRD stowed volume requirements, increasing weight, and increasing risk of inadvertent HCM deployment and Manual Nitrogen Isolation Valve closure.
At the ROM estimate of $4.130K, and the 2.5 years required to build and certify, ER has recommended not implementing this change.
CB/C. Nicollier requested data on reach evaluations and further evaluation or existing spreadsheet on length of time taken to reach sliders. The chairman suggested ER provide (to the EHB) the data on the negative loads margin due to the extension of the sliders.
Decision: Forward to 3/7/01 EHB.
No further items were submitted and the Tools Panel adjourned.
Submitted by: Approved by:
(O)riginal signed by) (Original signed by)
________________________________ ________________________________
Harriett A. Attaway D. G. LeStourgeonDale R. Roberts
EVA Tools & Crew Aids Panel Secretary Acting EVA Tools & Crew Aids Panel Chairman
Note: CARD changes are normally routed for concurrence after the Panel adjourns. Initiators are requested to be present or have representation for discussion of the change.
