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\u201cAn Air Hoist fell approx. 8 feet down on to 19-level platform (last week). No personnel injury or flight hardware damage occurred. A Standing Accident Investigation Board (SAIB) has been formed. SSME heat shield installation has been rescheduled,\u201d noted the NASA Test Director (NTD) processing report (L2), before the status was updated.<\/p>\n
\u201cThe Air Hoist (SAIB) is completing its work. The area is still controlled. Controls are expected to be removed and the air hoist re-installed. SSME heat shield installation is now scheduled to pick up tomorrow (Wednesday).<\/p>\n
Other processing, away from the controlled area, had been proceeding without delay, with engineers completed resupplying the Freon Coolant Loop \u2013 which runs through the orbiter\u2019s radiators to provide vehicle cooling when the Payload Bay Doors (PLBDs) are opened on orbit.<\/p>\n
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\u201cOV-105 (STS-134). Window 7 has been installed for flight. Completed engine leak check and securing,\u201d added NTD processing information. \u201cFreon Coolant Loop top-off was completed. Sampling and adjust are scheduled.\u201d<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/08\/A311.jpg\" "\\"A3\\"")
Waterproofing Endeavour is also being worked, after the process was recently carried out on Atlantis, marking the final few times the associated contractor \u2013 Evonik Degussa \u2013 will be working on the fleet<\/p>\n\u201cWaterproofing of the vertical and side hatch are planned for Friday. This operation will result in a Bay clear,\u201d added the NTD, following the clearance of OPF-1 for the opening work that was conducted on Atlantis this month.<\/p>\n
Having already shutdown their production last month, the Program Requirements Control Board (PRCB) overviewed their ability to support the waterproofing of the orbiters with their stock of Dimethylethoxysilane (DMES) \u2013 the waterproofing agent \u2013 through to the Launch On Need (LON) support role of Atlantis, and\/or if Atlantis gains the currently notional STS-135 mission.<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/08\/A413.jpg\" "\\"A4\\"")
\u201cTiles and Blankets are re-waterproofed by injection post flight. Approximately 42 one gallon bottles are used per Orbiter per flow. Current manifest shows two flows to the end of the program (STS-134, STS-335\/135),\u201d noted the associated PRCB presentations (L2) back in June.<\/p>\n\u201cDMES is used to re-waterproof the Orbiter tiles and blankets prior to every flight. DMES has been in use at KSC since 1988. Only effective waterproofing agent that does not cause RTV reversion. Only material that is qualified for use on the Orbiter thermal protection tiles and blankets. Evonik Degussa plans to shut down the DMES plant and remove equipment once the contract expires on July 21, 2010.<\/p>\n
Documentation shows that over 100 bottles of DMES will remain in stock after the final waterproofing is conducted, which should be an ample contingency ratio, taking into account it would take up to three years to find another supplier.<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/08\/A732.jpg\" "\\"A732\\"")
Endeavour\u2019s primary payload, the Alpha Magnetic Spectrometer (AMS) \u2013 which was the primary cause of the launch scheduled realignment in April \u2013 is expected at the Kennedy Space Center (KSC) in just over a week\u2019s time. Preparations for its eventual installation into Endeavour\u2019s Payload Bay are currently on track.<\/p>\n\u201cThe Delta AMS Compatibility Review for STS-134 was held August 6. It was followed up with a Ground Operations Working Group for AMS last week at KSC,\u201d noted Flight Operations and Integration (Johnson Space Center) on the latest Shuttle Standup\/Integration report (L2). \u201cAMS is on track to deliver on August 26.\u201d<\/p>\n
\u201cPayload Critical Path testing update: Alpha Magnetic Spectrometer (AMS) Power Transfer Unit (PTU) load test and Remotely Operated Electrical Umbilical (ROEU) 1553 BUS Characterization were rescheduled to this week,\u201d added the NTD report.<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/08\/A441.jpg\" "\\"A44\\"")
Meanwhile, an Engineering Review Board (ERB) is being updated on the ET-138 investigation this week, after engineers removed the LOX 17\u201d cover plate to perform angle and tip load measurements and found a washer had somehow found its way inside.<\/p>\nThe washer was sent back to the Michoud Assembly Facility (MAF) in New Orleans, in order to attempt to track down its history, while options remain open to perform X-Rays on both ET-138 and the already-stacked ET-137 \u2013 which is set to fly with Discovery on STS-133.<\/p>\n
\u201cPR (Problem Report) ET-138 Washer update: Possible course of action will be to take X-rays, including areas inside the intertank, to look for additional FOD (Foreign Object Debris). The decision may also be made to perform X-ray inspections of ET-137,\u201d added the NTD updates.<\/p>\n
\u201cThe washer investigation is in work. Currently, it appears to be an isolated incident. There is an Engineering Review Board (starting) Tuesday, August 17. They will discuss potential inspections. The team is still working possible scenarios of how the washer got into the pipe.\u201d<\/p>\n
Processing of the tank \u2013 taking place inside its Checkout Cell in High Bay 2E (HB-2E) inside the Vehicle Assembly Building (VAB) \u2013 is continuing to plan for the meantime.<\/p>\n
\u201cET-138 (VAB HB-2E): -Y protuberance air load foaming preps are in work,\u201d added NTD processing status. \u201cJ box foaming preps are in work. Aft hardpoint primer is in cure. All systems electrical test is complete.\u201d<\/p>\n
Stacking of STS-134\u2019s Solid Rocket Boosters (SRBs) have also picked back up in High Bay 1 (HB-1), following a few days of standdown due to poor local weather.<\/p>\n
\u201cIn the VAB on SRB stacking, started back up last week; were delayed by weather for a couple of days. Moved the left forward center segment over; it is in work,\u201d noted KSC Ground Operations on the Standup report, which was elaborated on via the NTD status update.<\/p>\n
\u201cSRB BI-145 \/ RSRM 113 (VAB HB-1): Left and Right tunnel cover bond preps are complete. Right Aft Center clevis preps are complete. Right Forward Center tang preps are complete. Right Center Joint segment mate preps are in work. Segment was lifted to HB-1 at 2000 (Monday).<\/p>\n
\u201cLeak check panel validation, run 4, complete. Right Aft Joint closeouts are complete. Right Aft Joint splice plate installation is complete. Hold down post ordnance preps: Upper shock absorbers are installed in blast containers. Clip installation is complete.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"
The mystery washer that managed to find its way into the LO2\/LOX feedline on External Tank ET-138 is being classed as an isolated incident, as the Shuttle fleet work through numerous investigations. Work on Endeavour is back into a full flow, as an investigation board check into how an Air Hoist managed to fall on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[9021,3366],"class_list":["post-40685","post","type-post","status-publish","format-standard","hentry","category-news","tag-et","tag-sts-134"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40685"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=40685"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40685\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=40685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=40685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=40685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}