RELIABILITY CENTERED MAINTENANCE

MODULE ONE (1) - ONLINE

ACTIVITY TWO (B) : FAILURE MODE & EFFECT ANALYSIS - COMPONENT LEVEL

NAME: JOEL MINAFI

DATE: 07 -JULY-2023

Specify System DEWATERING PUMP ASSEMBLY Date 07-Jul-23 Sheet

Equipment ELECTRIC MOTOR BEARING & HOUSING FAILURE MODE & EFFECT ANALYSIS Compiled By MFM Reliability Improvement Team
Drawing BEARING SECTIONAL VIEW ARRANGEMENT (PAGE 3) Approved MFM Manager/Superintendent

FAILURE EFFECT/DAMAGES/ COSTS/ LOSSES/ SAFETY

FAILED AT WHAT STAGE OF SYMPTOMS OF FAILURE FAILURE MODE ACTION TO PREVENT
COMPONENT SUB - COMPONENT COMPONENT FUNCTION FAILURE MODES FAILURE CAUSES RECTIFICATION ON FAILURE
OPERATION? KNOCK-ON TO MODE DETECTION METHOD FAILURE CAUSES
THE ITEM WHOLE SYSTEM
COMPANIONS
seals
replace seal
balls or rollers
seal damage initial assembly/start-up complete stop reservoir
raceways visible grease stains/drips visual inspection
grease leaking improper seal installation extreme operating conditions grease reservoir overtime if not cleaning/maintenance Condition monitoring
housing/casing increase temperature thermography
provide a continuous and controlled excessive pressure relubrication/maintenance attended install pressure relief
GREASE environment
supply of grease to the bearing mechanism
RESERVOIRS contamination
element and help dissipate heat
seals
increase tempaerature clear obstruction
contaminants balls or rollers thermography
clogging/blockage during operation grease reservoir nil unusual noise/vibration clean reservoir Condition monitoring
solidified grease raceways vibration analysis
irregular performance flush/rinse reservoir
housing/casing

seals increase noise visual inspection clean & remove contaminants

ineffective contaminant blockage/obstruction balls or rollers excessive heat thermography verify grease relief port
during operation grease relief port complete stop Preventive maintenance
purging inadequate grease flow raceways vibration vibration analysis functionality
provide a controlled outlet for cage/retainer contaminants presence oil analysis adjust greasing method
GREASE RELIEF excess grease and it also serve as a
PORT safety feature to prevent over-
blockage/obstruction seals monitor temperature clean & remove contaminants
greasing. increase temperature
inadequate pressure balls or rollers vibration/acoustic verify grease relief port
insufficient relief during operation grease relief port complete stop noise/vibration Preventive maintenance
differential raceways analysis functionality
grease leakage
improper positioning cage/retainer visual checks for leak apply proper greasing method

blockage/obstruction increase noise clean & check grease

rolling element acoustic analysis
improper channel initial assembly/start-up elevated temperature channeling window
grease channeling raceways temperature monitoring
lubricant starvation design/size extreme operating conditions complete stop vibration adjust lubes quantity & Proactive maintenance
window cage/retainer vibration analysis
inadequate grease relubrication/maintenance increase friction frequency
GREASE help direct grease to specific areas of bearing housing wear debris analysis
replenishment uneven wear pattern inspect & maintain seals
CHANNELING bearing, dissipitate heat and
rolling element increase noise
WINDOW contaminant removal. acoustic analysis
blockage/restriction start-up deformation & inner & outer races elevated temperature clean & clear grease channel
ineffective heat temperature monitoring
ELECTRIC MOTOR insufficient grease quantity & surface damage of cage/retainer complete stop vibration verify proper greasing Proactive maintenance
dissipation vibration analysis
BEARING & inadequate grease viscosity during normal operation grease channels bearing housing excessive grease evaluate grease relief port
wear debris analysis
HOUSING grease quality degradation
ARRANAGEMENT excessive load increase noise
acoustic analysis
overload rolling element elevated heat replace damage open ball
early stage rolling element & temperature monitoring
fracture fatigue inner & outer races complete stop vibration bearing components Preventive maintenance
sudden due to over load cage vibration analysis
material defects cage/retainer decreased performance
performance analysis
provide load support, reduce friction improper installation irregular operations
OPEN BALL and alignment compensate for slight
BEARING misalignment between the shaft and excessive heat generation abnormal noise
early stage races
housing. increased friction/wear shaft increase operating visual inspection adjust mounting
during normal operation balls
misalignment noise/vibration housing complete stop temperature vibration analysis shim adjustment Preventive maintenance
load variation cage
loss of radial/axial load sealing system grease discoloration temperature monitoring shaft realignment
lubricant
carrying capacity uneven wear lube analysis
shaft alignment checks
visual inspection
installation error installation
unusual noise magnetic particle
misalignment initial operation housing/casing
increase vibration inspection
crack/fracture excessive load during normal operation innner bearing cap shaft/spindle disrupt operation replace inner bearing cap Proactive maintenance
irregular rotation dye penetrant testing
thermal stresses load variation system performance
excessive heat ultrasonic testing
fatigue
INNER BEARING securely hold the bearing acoustic inspection
CAP components within the housing.
visual inspection
installation error installation unusual noise
housing/casing diamensional analysis
misalignment initial operation increase vibration
deform/distort innner bearing cap shaft/spindle disrupt operation surface irregularity replace inner bearing cap Proactive maintenance
improper bearing clearance during normal operation irregular rotation
system performance detection
thermal stresses overload/ sudden impact excessive heat
ultrasonic testing

redirect excess oil away from the

start-up rolling element
bearing area, thus reducing the inadequate lube supply
ANTI-CHURNING high-speed/load operation raceways increased temperatures temperature monitoring clear blockage
amount of oil agitation and lubricant starvation blockage/contamination bearing surfaces nil Preventive maintenance
VANES faulty lube system cage abnormal noise acoustic monitoring regular maintenance
preventing it from reaching sensitive mechanical failure
bearing rings
parts of the bearing.
SYSTEM ASSESSED: DEWATERING PUMP ASSEMBLY
DEWATERING PUMP UNIT

COMPONENT ASSESSED: ELECTRIC MOTOR BEARING HOUSING