A-Standard Inspection procedure for Dry & thorough inspection

  • Checking the registration number of the Boilers
  • Carryout thorough inspection of Boiler from both inside and out side
  • Check for defects like corrosion, erosion, bend, bulging, pitting, deformation, thermal expansion etc of pressure parts
  • Check thickness of pressure parts
  • Check the conditions of mountings & fittings
  • Witness non destructive tests if required

B-Standard procedure for ground inspection of pressure parts under erection

  • Verification of documents of pressure parts with relevant certificates
  • Verification of approved drawings
  • Checking pressure parts makers stamp & other identification marks with form no-II
  • Checking of leading dimension of the parts & comparing with approved drawings
  • Checking general condition of the pressure parts like dent marks, pitting, bend etc
  • Checking of fittings & mountings with relevant drawings

C-Standard procedure for material inspection

  • Verification of the approved drawings corresponding to the materials & documents
  • Checking of the pressure parts materials with relevant IBR certificate and  approved drawing.Check name of the material, its specification, heat no, cast no.class, size, identification number & stamping etc
  • Checking of leading dimension of the parts & comparing with approved drawings
  • Checking general condition of the pressure parts like dent marks, pitting, bend etc
  • Selection of samples for physical and chemical analysis/testing

D-Standard Procedure for weld set up inspection

  • Verification of approved drawing
  • Verification of Welder’s certificate
  • Verification of the certificates of welding consumables
  • Verification of the approval of contractor for particular job
  • Verification for the procedure of welding procedure
  • Verification for the site satisfactory  simulation test results
  • Verification of test results of pipe, tube or plates
  • Checking of root gap,weld groove profile and alignment of the pressure parts to be welded as per approved drawing
  • Ensure weld joint area to be welded is free from dust, dirt, oil & grease.And also ensure it is crack free
  • Check weld joint identification number.

E-Standard Procedure for welding joint inspection

  • Visual inspection of general condition of the weld joint like, slag, under cut, finish, surface crack, leg length etc
  • Check alignment of the pressure parts
  • Witnessing Dye penetrant test, magnetic particle inspection test & hardness tests if required
  • Selection of weld joints for NDT test like ultrasonic & radio graphic tests

F-Standard Procedure for Boiler Hydraulic tests

  • Verification of the satisfactory non destructive tests of the welding joints
  • Verification of PMI (Positive Material Identification) report of the weld joints
  • Verification of pressure parts calculation approval
  • Verification of all previous inspection reports and Post weld heat treatment (PWHT) charts
  • Check the calibration reports of pressure gauges using for hydraulic test
  • Witnessing Hydraulic test carried out as per IBR-1950
  • Checking of deflection, distortion and extension of pressure parts during hydraulic test
  • Thorough inspection of pressure parts for any leakages and sweating

G-Standard Procedure for Boiler steam tests

  • Verification of the provisional order of the Boiler
  • Witnessing the steam test carried out as per IBR-1950
  • Check, popping pressure, reset pressure, blow down, accumulation, chattering, lift
  • Checking of the performance of the mountings and fittings


Read more >>>> Power plant and calculations


No comments:

Post a Comment

Hi all,
This article is written based on practical experience..If liked, share with others, or any suggestions leave in comment box.

15-Emergencies in power plant operation

Most visited posts