NASA-LLIS-1091

NASA - National Aeronautics and Space Administration (NASA)

Lessons Learned – Synchronizing Customer Requirements with Service Provisions

Organization:

NASA - National Aeronautics and Space Administration (NASA)

Year: 1999

Abstract: Description of Driving Event:
During pre-operations for the 5A US Lab Closed Hatch Environmental Control & Life Support System/Thermal Control System (ECLSS/TCS) testing, a water separator fault occurred in the Common Cabin Air Assembly (CCAA). The inlet ORU was pulled and found to be wet inside. Three to four ounces of water were noted on the rack floor under the separator/heat exchanger. A small amount of water was found inside the separator but not enough to touch electronics. Water was also found in other areas (hydroflow fitting and coupler of the inlet hose and the inside of the inlet).
Root cause: The Test Procedure (TP) and Test Preparaton and Restoration Document (TP&RD) were not synchronized. The TP&RD placed a valve in series between the water separator and the GSE collection tank. The TP&RD also, appropriately, had the valve closed to keep water in the line after it was filled and before water separator was started. The TP did not open the valve before initaiation of water separator operations. The TP&RD & TP WERE NOT carefully reviewed for complete integration.

URI: https://yse.yabesh.ir/std/handle/yse/105754

Subject: Configuration Management

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NASA - National Aeronautics and Space Administration (NASA)

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contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:42:27Z
date available	2017-09-04T16:42:27Z
date copyright	07/15/1999
date issued	1999
identifier other	VRUEQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/105754
description abstract	Description of Driving Event: During pre-operations for the 5A US Lab Closed Hatch Environmental Control & Life Support System/Thermal Control System (ECLSS/TCS) testing, a water separator fault occurred in the Common Cabin Air Assembly (CCAA). The inlet ORU was pulled and found to be wet inside. Three to four ounces of water were noted on the rack floor under the separator/heat exchanger. A small amount of water was found inside the separator but not enough to touch electronics. Water was also found in other areas (hydroflow fitting and coupler of the inlet hose and the inside of the inlet). Root cause: The Test Procedure (TP) and Test Preparaton and Restoration Document (TP&RD) were not synchronized. The TP&RD placed a valve in series between the water separator and the GSE collection tank. The TP&RD also, appropriately, had the valve closed to keep water in the line after it was filled and before water separator was started. The TP did not open the valve before initaiation of water separator operations. The TP&RD & TP WERE NOT carefully reviewed for complete integration.
language	English
title	NASA-LLIS-1091	num
title	Lessons Learned – Synchronizing Customer Requirements with Service Provisions	en
type	standard
page	3
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1999
contenttype	fulltext
subject keywords	Configuration Management
subject keywords	Flight Equipment
subject keywords	Flight Operations
subject keywords	Ground Equipment
subject keywords	Ground Operations
subject keywords	Hardware
subject keywords	Industrial Operations
subject keywords	Launch Process
subject keywords	Parts Materials & Processes
subject keywords	Policy & Planning
subject keywords	Range Operations
subject keywords	Research & Development
subject keywords	Risk Management/Assessment
subject keywords	Safety & Mission Assurance
subject keywords	Test & Verification
subject keywords	Test Article
subject keywords	Test Facility