TABLE OF CONTENT Scope 2 Introduction 2 Definitions 2 Fans and Blowers 2 Gear Boxes 7 Mechanical Agitators 8

Transcription

1 Page : 1 of 11 Project Engineering Standard August 2013 KLM Technology #03-12 Block Aronia, Jalan Sri Perkasa 2 Taman Tampoi Utama Johor Bahru Malaysia GEAR BOXES & AGITATORS TABLE OF CONTENT Scope 2 Introduction 2 Definitions 2 Fans and Blowers 2 Gear Boxes 7 Mechanical Agitators 8 Differing Schedules 9 References 11

2 Page 2 of 11 SCOPE This Project Standards and Specification covers the minimum requirements for inspection and maintenance of installed fans, blowers, mechanical agitators and gear boxes of rotary equipment. It does not intend to supersede other applicable standards, technical specifications and manufacturer s recommendations. INTRODUCTION The Rotary Equipment plays a vital role in hydrocarbon processing industry. Timely inspection and maintenance of Rotary Equipment will go a long way in ensuring safer operations of the installations in Oil Industry. DEFINITIONS i) FAN: The word fan is used to describe a machine with pressure rise up to 1 psig. ii) BLOWER: The word Blower is used to designate a machine, which raises pressure from 1 psig to 5 psig.

3 Page 3 of 11 FANS AND BLOWERS 1. PREVENTIVE MAINTENANCE SCHEDULE Bearing Temperature, Bearing cooling water flow & cooling water temperature and motor amperage should be checked daily. The following checks shall be carried out for fans and blowers, after specified hours of operation as given below: A. After every 200 hours i) Bearing oil for contamination and level ii) Bearing temperature iii) Bearing cooling water flow and cooling water temperature. iv) Motor amperage v) Grease lubrication of bearings. vi) Bearing vibration vii) Grease lubrication for damper shaft bearings. B. After every 1000 hours i) Repeat the checks given at 200 hours ii) Foundation bolts for tightness iii) Freeness of dampers C. After every 2000 hours i) Repeat the checks at 200 and 1000 hours ii) Condition and cleanliness of bearing cooling water system iii) Condition of bearing oil iv) Condition of lube oil filters v) Cleanliness of suction strainers vi) Suction/discharge damper bearings for proper grease lubrication.

4 Page 4 of 11 D. After every 4000 hours i) Repeat the checks above ii) Alignment iii) Bearing condition iv) Lube oil filters (replaced or not) v) Condition of vane control damper (rollers to be checked and repaired, as necessary). E. After every 8000 hours i) Repeat the checks above ii) Condition of bearings (change, if needed) iii) Alignment (repair coupling, if needed, pins-bushes, toothed hub-cover/hubs shall be changed, if needed) iv) Condition of bearings of damper shafts (change if needed) v) Condition of turbine bearings in case of steam turbine and change, if needed vi) Condition of shaft seals. vii) Check coupling guard & rectify if necessary. viii) Check Belt guard and rectify, if necessary. F. After every hours i) Repeat all checks above ii) Replacement of bearings iii) Condition of shafts, impeller and casing iv) Condition of suction and discharge dampers v) Alignment vi) Lubrication system

5 Page 5 of 11 Complete overhauling shall be carried out, which includes part wise inspection as detailed in Part PART WISE INSPECTION Part wise inspection shall be carried out during complete overhaul and the following items shall be checked / inspected: A. Vane Control System i) Vane control/variable inlet control should be checked for proper functioning. ii) Rollers shall be checked for proper grease lubrication. iii) Levers and other parts shall be checked for proper movement. iv) The ring shall be checked for ovality/distortion of pins, (in case the arms are operated by a ring). Note: The necessary repair of arm (levers), actuating pneumatic cylinders, control valves and flappers, should be carried out. B. Shafts i) The bearing portion, lock nut threading, key portion and coupling portion shall be checked for wearing out, corrosion/pitting (If the worn out part is beyond fitment limit, repair/ change the shaft. ii) The shaft shall be checked for trueness before fitting with impeller (Trueness limit is to be maintained as per manufacturer s recommendation. However, run-out should not exceed 0.02 mm.)