F. M. E. A. RHIC Cryogenics Page: 39 of 229
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Failure Mode Effects Analysis
System: RHIC Cryogenic System
Operation Mode: Full Ring Normal Operations
Item: 18
Failure Modes and Effects:Open
Closed
Full
Scale
High
Full
Scale LowDate: 15-Sep-98
Page: 31Visual detection. Frosted Component.
Minor helium leak. Minor increase in
refrigerator output.
Static pressure indication, inconsistent
with other adjacent pressures.
High/Full scale pressure indication.
Zero/Low pressure indication.Affected Components:
........ . . ...::
_;____ B.:B
B
B
B
B
B
B
B
B
Y
Y
Y
Y2
2
2
2
2
2
2
2
2
2
2
2
2PRESSURE TRANSDUCER M 12
PRESSURE TRANSDUCER H 12
PRESSURE TRANSDUCER H 12
PRESSURE TRANSDUCER U 12
PRESSURE TRANSDUCER R 12
PRESSURE TRANSDUCER HU 4
PRESSURE TRANSDUCER M H
PRESSURE TRANSDUCER M 4
PRESSURE TRANSDUCER HU 12
PRESSURE TRANSDUCER M 4
PRESSURE TRANSDUCER M 12
PRESSURE TRANSDUCER H 12
PRESSURE TRANSDUCER H 12
PRESSURE TRANSDUCER U 12
PRESSURE TRANSDUCER R 12
PRESSURE TRANSDUCER SH
PRESSURE TRANSDUCER HU 4
PRESSURE TRANSDUCER M 42 RESSURE TANSDUCER H"U 12
P13755H Y 2
Y
Pl6249H Y 2
Pl6250H Y 2Y
Pressure indicator failure. Minor cold gas leak.
Minor increase in refrigerator heat load. Can be
shut off with manual valve.
No impact. Instrumentation only. Burst pressure
over 300 psia.
No impact. Instrumentation only, with adjacent
sensors available.
No impact. Instrumentation only with adjacent
sensors available.P13733H
P13734H
P13735H
P3736H
P13737H
P14249H
P14250H
P14251 H
P14252H
P14253H
P13751 H
Pl3752H
P13753H
Pl3754HPl6248H
PI6251 H
PRESSURE TRANSDU 2
:;:;:.::: ::.:::: :........................................l._:::::.
2
2
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Kane, S>. F. M. E. A. RHIC Cryogenics, report, February 8, 1999; United States. (https://digital.library.unt.edu/ark:/67531/metadc865608/m1/39/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.