Source: https://www.scribd.com/document/311100624/Project-Standards-and-Specifications-Inspection-of-Pumps
Timestamp: 2019-04-23 22:37:17+00:00

Document:
The schedules indicate the maximum interval of time between two inspections. Screw Pumps and Dosing Pumps). Both ends supported/ overhanging type. Timely inspection and maintenance of rotary equipment will go a long way in ensuring safer operations of the installations in Oil Industry.KLM Technology Group Project Engineering Standard SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 2 of 21 Rev: 01 April 2012 SCOPE This Project Standards and Specification covers the requirements for inspection. . commissioning and testing procedures for the following Rotary Equipment used in the Oil Industry: I. the following dated and undated standards and codes are referred to. maintenance.Reciprocating DEFINITION AND TERMINOLOGY  OD – Outer diameter of bearing  ID – Inner diameter of bearing GENERAL Introduction The rotary equipment plays a vital role in hydrocarbon processing industry. Organisations having historical records and analysis of failures may alter the inspection interval accordingly. REFERENCES Throughout this Standard. The schedules given in this standard are very broad based on present experience and practices and may be modified from time to time. Centrifugal Pumps (Horizontal/ Vertical.  API 610 Centrifugal Pumps for General Refinery Services  API 674 Positive Displacement Pump. These referenced documents shall. Single/ Multi stage and Submersible type) II. to the extent specified herein to form a part of this standard. Gear Pumps. Positive Displacement Pumps (Reciprocating Pumps.
Vertical Centrifugal Pumps IV. Gland for leakage Cooling water flow in both the bearing housings Condition of bearing by sound and temperature (in running condition) Performance of all measuring instruments (pressure or temperature gauges and flow meters) Coupling Guard Electric Motor load current Axial position indicator (in case of multi stage pump) Dowel pins (in position or not. x. xiv. vi. iii. ix. v. The frequency of measurement shall depend on the criticality of the equipment. Bearing lubricant (for water contamination and sediments) Oil ring for performance Deflector for looseness Constant level oiler for leakage Mechanical seal for leakage Seal flushing/ quenching system (of mechanical seal) for clogging and chocking. ii. viii. wherever provided) . After 1000 running hours or 3 months whichever earlier i. xii. vii. Submersible Pumps Checklist on inspection items for each type of pumps shall be as per the schedule given below. HORIZONTAL CENTRIFUGAL PUMPS (BOTH ENDS SUPPORTED) All the following items shall be checked or recorded after the specified period: 1. Horizontal Centrifugal Pumps (both ends supported) II. iv. xiii. I. PREVENTIVE MAINTENANCE CENTRIFUGAL PUMPS INSPECTION SCHEDULE FOR Centrifugal Pumps are classified in the following groups for preparation of preventive maintenance inspection schedule: I.KLM Technology Group Project Engineering Standard SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 3 of 21 Rev: 01 April 2012 PREDICTIVE MAINTENANCE SCHEDULE FOR CENTRIFUGAL PUMPS The condition of centrifugal pump can be assessed by measurement of vibration and shock pulse levels of antifriction bearings. Horizontal Centrifugal Pumps (overhanging type) III. xi.
Repeat all checks per No: 1. ii. Flushing of bearing with lube oil and refilling of oil to required level. ii. Foundation. Condition of coupling. Alignment (Misalignment shall not be more than 0. lock nut and lock washer (in case lock washer found damaged and lock nut loose. lock nut and lock washer (in case lock washer found damaged and lock nut loose. After 4000 running hours or 1 year whichever earlier i. foundation bolts and supports v. Oil filter for cleanliness if journal bearings are hydrodynamic vii. iv. v. shaft axial play shall be checked). Replacement of old packing with new ones and condition of gland follower. lantern ring and sleeves (in case of gland packing) vi.05 mm) ix. iv. spring washers and their conformity to uniform size. Change grease in half coupling in case of gear type. Inspection of bearings (replace the bearings if necessary). Flushing of cooling water lines and strainers. whether carried out or not Notes: i) After completing the checks listed above the pump shall be started and the following shall be checked during the trial run (the trial run duration shall be half to one hour for electric driven and 3 to 4 hours for diesel driven): a) Discharge pressure b) Suction pressure c) Liquid flow (if possible) d) Condition of mechanical seal/ gland packing e) Electric Motor load current at discharge valve shutoff and open condition . coupling bolts. Painting of equipment. shaft axial play shall be checked) iii. After 8000 hours or 2 years whichever earlier i. Following items of Journal bearings : a) High spot (High Spots shall be scrapped) b) Condition of thrust bearing. whether carried out or not (to ensure proper flow of cooling water. nuts. whether carried out or not iii. Inspect condition of mechanical seals viii. 3. Condition of outboard bearing. Repeat all checks per No: 2.KLM Technology Group Project Engineering Standard SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 4 of 21 Rev: 01 April 2012 2. Pump float (adjust if necessary) vi.
Repeat all checks per No: 1. Flushing of cooling water lines and cleaning of Strainers. II. HORIZONTAL CENTRIFUGAL PUMPS (OVERHANGING TYPE) All the following items shall be checked or recorded after the specified period 1. Condition of coupling guard viii. Constant level oiler for proper working iv. Condition of mechanical seal vi.KLM Technology Group Project Engineering Standard SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 5 of 21 Rev: 01 April 2012 f) Condition of bearing by sound and temperature g) Any leakage h) Vibration and shock pulse reading ii) Pumps in hot service shall not be rotated unless it is gradually heated up to a temperature close to that of the working fluid. Condition of bearing by sound and temperature ix. ii. foundation bolts and supports. if bearings are grease lubricated 2. Gland packing (for leakage) v. After 4000 hours or 1 year whichever earlier i. Oil in bearing housing for water contamination and sediment (replace oil if necessary) ii. Cooling water flow vii. Electric motor load current (at discharge valve shutoff and open condition) x. Oil ring for proper working iii. After 1000 hours or 3 months whichever earlier i. v. This shall include part-wise inspection as per item ‘V’ and all checks specified for 8000 hours. iii. 4. Performance of all measuring instruments (pressure/ temperature gauges and flow meters) xi. . whether carried out or not (to ensure proper flow of cooling water) Condition of coupling (in decoupled condition) Coupling end support for any abnormality Foundation. After 16000 hours or 4 years whichever earlier Complete overhauling of the pump shall be carried out. iv. Greasing of bearing.
Pump discharge pressure iv. Pumps in hot service shall not be rotated unless it is gradually heated up to a temperature close to that of the working fluid. SUBMERSIBLE PUMPS (WET MOTOR TYPE AND DRY MOTOR TYPE) The following items shall be checked or recorded: 1. After every 8000 hrs. vii. Ensure optimum liquid level to avoid dry run wherever auto cut or in cut is not provided ii. this interval may be reduced as required) Complete overhauling of the pump shall be carried out. SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 6 of 21 Rev: 01 April 2012 Alignment (Realign. Motor load current iii. if necessary) Performance of all measuring instruments and recording of readings Suction line strainer for cleanliness 3. After completing the checks listed above the pump shall be started and the following shall be checked during the trial run (the trial run duration shall be half to one hour for electric driven and 3 to 4 hours for diesel driven): a) Discharge pressure b) Suction pressure c) Liquid flow (if possible) d) Condition of mechanical seal / gland packing e) Electric motor load current at discharge valve shutoff and open condition f) Condition of bearing by sound and temperature g) Any Leakage h) Vibration and shock pulse reading ii. After 8000 hours or 2 years whichever earlier Complete overhauling of the pump shall be carried out. Any abnormal sound and vibration of connected piping 2. viii. After every 250 hours or fortnightly whichever earlier i.KLM Technology Group Project Engineering Standard vi. III. This shall include part-wise inspection as per item ‘V’ – Part-Wise Inspection During Complete Overhaul of Centrifugal Pumps . This shall include partwise inspection as per item ‘V’ and all checks per item 2 Notes: i. or 2 years whichever earlier (for saline service.
Repeat all checks per No: 1 Flushing of cooling water lines and cleaning of Strainers. vii. iii. After every 24000 hours or 4 years whichever earlier Complete overhauling shall be carried out. if necessary) Performance of all measuring instruments and recording of readings Suction line strainer for cleanliness 3. vi. foundation bolts and supports Alignment (realign. ii. part-wise. After 1000 hours or 3 months whichever earlier i. vi. v. vii. viii. . inspection as per item ‘V’ and checks specified for 4000 hours shall be carried out. iii. iv. During overhauling. After 4000 hours or 1 year whichever earlier i.KLM Technology Group Project Engineering Standard IV. v. ix. Oil in bearing housing for water contamination and sediment (Replace oil if necessary) Constant level oiler for proper working Gland packing (for leakage) Condition of mechanical seal Cooling water flow Condition of coupling guard Condition of bearing by sound and temperature Electric motor load current (at discharge valve shutoff and open condition) Performance of all measuring instruments (pressure/ temperature gauges and flow meters) 2. ii. SPECIFICATIONS FOR PUMP INSPECTION (PROJECT STANDARDS AND SPECIFICATIONS) Page 7 of 21 Rev: 01 April 2012 VERTICAL CENTRIFUGAL PUMPS All the following items shall be checked/ recorded after the specified period: 1. whether carried out or not (to proper flow of cooling water) Condition of coupling (in decoupled condition) Foundation. iv.

References: v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v.