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National Aeronautics and Space Administration

EVA 23 Suit Water Intrusion

Table of Contents ACKNOWLEDGMENTS ............................................................................................................... 1 1.0

CHARTER AND RESPONSE.......................................................................................... 3

1.1 Signature Pages .................................................................................................................................. 3 1.1.1 Investigating Authority Signatures .............................................................................................. 3 1.1.2 Ex Officio Signature ..................................................................................................................... 4 1.1.3 Advisor Signatures ...................................................................................................................... 5 1.2

Transmittal Letter ............................................................................................................................... 7

1.3

Appointment Letter ............................................................................................................................ 8

1.4

Executive Summary .......................................................................................................................... 12

2.0 2.1

NARRATIVE DESCRIPTION AND FACTS .............................................................. 23 Overview .......................................................................................................................................... 23

2.2 Background ....................................................................................................................................... 23 2.2.1 Mission Control Center Team .................................................................................................... 24 2.3

Events Immediately Leading Up to Mishap ...................................................................................... 26

2.4

Events at Time of Mishap ................................................................................................................. 27

2.5

Events Following the Mishap — including Secondary Undesired Outcome...................................... 28

3.0

DATA AND ANALYSIS ................................................................................................ 30

3.1

Approach .......................................................................................................................................... 30

3.2

Type of Data Gathered: List of Documents ....................................................................................... 30

3.3

Timeline ............................................................................................................................................ 31

3.4 Extravehicular Mobility Unit (EMU) Operational Description........................................................... 32 3.4.1 System Level EMU Description .................................................................................................. 32 3.4.2 Ventilation Circuit ..................................................................................................................... 37 3.4.3 Cooling Loop ............................................................................................................................. 40 3.4.4 Water Separator Loop ............................................................................................................... 42 3.4.5 ISS EMU Coolant Loop ............................................................................................................... 44 3.4.6 Airlock Cooling Loop Recovery (ALCLR) Kit ................................................................................ 45 3.4.7 Maximized EMU Ground Activity (MEGA) Certification Process ................................................ 46 3.5

Concurrent Investigations................................................................................................................. 47

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ISS EVA Suit Water Intrusion Mishap Investigation Report  

Report of the NASA Mishap Investigation Board examining the high visibility close call event of July 16, 2013 when ESA astronaut Luca Parmit...

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