NASA-LLIS-0047

Lessons Learned - Mercoid Pressure Switch; Inadvertent Water Deluge Activation

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T18:19:07Z
date available	2017-09-04T18:19:07Z
date copyright	33591
date issued	1991
identifier other	AFYCQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/201818
description abstract	Description of Driving Event: The primary cause of the mishap was an activation (closing) of the fire pump mercoid pressure switch which prematurely started the fire pump. This produced transient pressures that exceeded the 2:1 mechanical advantage of the deluge valves, forcing them open. The switch activation was caused by potable water system pressure fluctuations external to the local facility.
language	English
title	NASA-LLIS-0047	num
title	Lessons Learned - Mercoid Pressure Switch; Inadvertent Water Deluge Activation	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1991
contenttype	fulltext
subject keywords	Facilities
subject keywords	Fire Protection
subject keywords	Ground Equipment
subject keywords	Ground Operations
subject keywords	Hardware