Misalignment of moving parts leading to operational failure 8 7 5 280 280

Misalignment of moving parts leading to operational

This preview shows page 20 - 25 out of 53 pages.

Misalignment of moving parts leading to operational failure 8 7 5 280 280 VACUUM PLANT Oil level in vacuum pump low Relative motion not smooth 8 5 1 40 37 Hose connections clamp not secured Leakage problem/ Undesired motions 8 7 1 56 Vacuum relief valve/ Pressure Relief valve not fitted Shot up pressure may cause hazards 9 2 2 36 Page 20 of 53
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Corrosion/ Cavitation Knife gate valve inoperable 8 2 1 16 RUNNING CHECKS No provision of vibration dampener Vibrations and noise 6 7 1 42 128 Test not done Failure in case of tank testing under -0.8 bar vacuum 8 7 1 56 Test not done Failure in case of testing over 0.5 bar pressure 8 7 1 56 Test not done Overheated pump lines 8 7 5 280 Test not done Pressure relief valve not operating at a pressure above 0.5 bar 8 7 2 112 Test not done Failure of ball valve operation under vacuum and over pressure conditions 8 7 5 280 Test not done Pressure gauge not working 10 7 1 70 HYDRAULIC PLANT Undesired relative motion resulting into friction or less oil level Noise from pump 7 2 1 14 42 Loose joints or improper hose Leakage 8 7 1 56 Rear door opening not tried out for a certain number of times Problems in opening and closing of rear door 8 7 1 56 FUNCTIONAL PERFORMANCE OF MACHINE If there are lacunae in the above mentioned points Undesired performance at site 8 7 5 280 280 PNEUMATIC DC VALVE Operational failure of DC valve Pneumatic engagement and disengagement disabled 8 3 1 24 24 Inspection areas Average RPN GENERAL CONDITION 35 SLUDGE/WATER TANK 21 PUMP DRIVES 144 FOUNDATION BOLTS 280 VACUUM PLANT 37 RUNNING CHECKS 128 HYDRAULIC PLANT 42 FUNCTIONAL PERFORMANCE OF MACHINE 280 PNEUMATIC DC VALVE 24 Page 21 of 53
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GENERAL CONDIT ION SLUDGE/W ATER TANK PUMP DRIVES FOUNDATION B OL TS VACUUM PL ANT RU NNING CHECKS HYDRAULIC P LANT FUNCT IONAL PERF ORMANCE OF MACHINE PNEUMATIC DC VAL VE 0 50 100 150 200 250 300 Risk Analysis of KAMVAC INSPECTION AREAS RPN Conclusion:- It can be seen that Foundation bolts and Functional Performance of the machine have high risks associated. It means that during final inspection, more attention needs to be paid to these areas. Page 22 of 53
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Risk analysis of KAMJET machine DESCRIPTION FAILURE MECHANISM RISK S O D RPN =S*O*D Average RPN INSTRUCTION LABELS Instruction labels not pasted on the equipment Inconvenience to customers 6 1 1 6 6 GENERAL CONDITION Appearance Unappealing appearance (Welding spatters/ all areas not found covered in paint) 5 7 1 35 35 Coating thickness found less (micron) Coating erosion around moving parts 5 7 1 35 WATER TANK Impurities in the form of oxides may reduce reliability of tank Corrosion 5 2 3 30 19 Drain valve operation not tried out Possibility of its operational failure 8 1 1 8 PUMP DRIVES Coupling bolts of drive shafts loose Transmission failure/ Rupture 8 3 6 144 144 No lubrication of cross joints Heat generation, reduced performance and noise 7 2 5 70 Low belt tension Sagging may lead to transmission losses 8 7 5 280 Page 23 of 53
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Coupling, key and G. Screw not tightened May lead to operational failure 8 2 5 80 FOUNDATION BOLTS Foundation bolts of moving parts like Split Shaft PTO, Out rigger unit, Jetting pump, Hydraulic Pump not tightened
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  • Fall '17
  • Mahvish ali

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