PSPC Guideline & its effect

Transcription

1 1 Guideline & its effect

2 Guideline 2

3 Content 3 History & Progress Inspector Primary Surface Preparation Edge grinding Steel preparation Secondary Surface Preparation Surface Preparation after Erection Salt contents DFT Stripe coat Dust DFT measurement

4 History & Progress 4 Approved at MSC 81 IACS, early implementation to CSR ships Request UI to IACS IACS PR 34 KOSHIPA-IACS IACS Meeting JWG/COATING 1 st & 2 nd Meeting Guideline for Implementation of MSC 215(82)

5 Inspector 5 Guideline Shall be agreed upon the parties and presented to the Administration for review. Choice of Inspectors should be a part of agreement Assistant can be used Clear reason for additional test & measurement

6 PSP 6 Guideline Shall be agreed upon the parties and presented to the Administration for review. Inspections to be carried out as per para Recommend to using the steel plate of rust grade A or B More inspection to the plate of Rust Grade C & D Process control on automated PSP line Typical QA control on abrasives

7 Edge grinding 7 Guideline 2R, or 3 pass grinding or at least equivalent process Equivalent means a geometrically equivalent to, or better than (considering effective coating performance)

8 Steel preparation 8 Guideline Before secondary surface preparation starts, a visual inspection shall be carried out By the coating inspector

9 SSP 9 Guideline Damage : Sa 2.5 Retained S/Primer : Sweeping or High pressure washing or equivalent Power tool for repair (2% rule can be applied) Contamination on retained S/Primer : according to coating manufacturer s recommendation Damage (shop primer) : burnt or corroded

10 After Erection 10 Guideline Butt : St 3 or better Erection joints : St 3 or Sa 2.5 where or better or Sa 2.5 applicable where applicable Damage < 2% : St 3 Damage < 2% : St 3 Damage > 2% or Damage > 2% or 25m 2 : Sa m 2 : Sa 2.5 Damage (coating) : damage reaches to steel surface only

11 Salt contents 11 Guideline Water soluble salt equivalent to NaCl after blasting or grinding : 50 mg/m 3 of NaCl Method : ISO None

12 D.F.T. 12 Guideline 2 spray coats NDFT 320 mic. 90/10 rule 2 equal coat is not required, min. DFT recommended by the Paint manufacturer to be followed for each coat.

13 Stripe coat 13 Guideline 2 stripe coats on edges & welds 2 nd stripe coat can be dispensed on welds Roller/brush 2 stripe coats on all edges 1 stripe coat on welds(dft is verified by annex 3, flat surface case) Roller or brush but, roller for small holes

14 Dust 14 Guideline Class 3,4,5 : Grade 1 ( Tape test) Class 1,2 to be removed if visible No tape test if agreed Visible small sized dust to be removed up to invisible 1 measurement per block

15 DFT measurement 15 Guideline Annex 3 ; Gir/Web : 3 points/3m Long l : 2 points/3m Opening : 2 points WFT measurement for quality control purpose. Girder & Floor in D/Hull : 1 point/5m 2 Flat bar & Bulb plate long l : 1 point/3m Opening : 400 mm dia & over WFT by sprayer

16 DFT measurement 16 Guideline DFT readings to be attached in LOG Representative DFT measurement ment for 1 st coat as a guide for next work. Statistical summary only to be recorded (Numbers, minimum, maximum, average DFT)

17 Cost Effect 17

18 Contents 18 Cost Effect (item by item) Cost Effect (Summary) Q & A

19 Cost Effect 19 Inspector Cost Effect Shall be agreed upon the parties and presented to the Administration for review. Increased inspection activity about 100% Additional cost if agreed to invite 3 rd party as inspector

20 Cost Effect 20 PSP Cost Effect shall be agreed upon the parties and presented to the Administration for review. Inspections to be carried out as per para Additional cost for regular inspection

21 Cost Effect 21 Edge grinding Cost Effect 2R, or 3 pass grinding or at least equivalent process 100% or more cost is required for additional edge treatments

22 Cost Effect 22 Steel condition Cost effect Before secondary surface preparation starts, a visual inspection shall be carried out Additional cost for steel inspection Additional stock time for inspection

23 Cost Effect 23 Block stage Cost Effect Damage : Sa 2.5 Retained S/Primer : Sweeping or High pressure washing or equivalent 30% more surface preparation cost is required for sweeping, etc.

24 Cost Effect 24 After erection Cost Effect Butt : St 3 or better or Sa 2.5 where applicable Damage < 2% : St 3 Damage > 2% or 25m 2 : Sa 2.5 Dispute for applying higher grade of surface preparation Additional coat for inspection & assessment of Damage %

25 Cost Effect 25 Salt contents Cost Effect Water soluble salt equivalent to NaCl after blasting or grinding : 50 mg/m 3 of NaCl Method : ISO Additional cost for Test & Washing Washing to be applied about 20% of Blocks (Blocks from sub- contractor : 50%, Other Blocks : 10%)

26 Cost Effect 26 DFT Cost Effect 2 spray coats NDFT 320 mic. 90/10 rule 20% more painting cost due to increasing total DFT 10% more painting cost due to 90/10 rule

27 Cost Effect 27 Stripe coat Cost Effect 2 stripe coats on edges & welds 2 nd stripe coat can be dispensed on welds Roller/brush 150% more painting cost due to increasing number of stripe coating & area of stripe coating

28 Cost Effect 28 Dust Cost Effect Class 3,4,5 : Grade 1 ( Tape test) Class 1,2 to be removed if visible 15% more cleaning cost is required Vacuum cleaner to be provided for final cleaning on bottom

29 Cost Effect 29 DFT measurement Cost Effect Annex 3 ; Gir/Web : 3 points/3m Long l : 2 points/3m Opening : 2 points WFT measurement for quality control purpose. 5% more painting cost due to increasing number of DFT measurement 20% more surface preparation cost due to control of Max. DFT (partial( repair for areas exceeding Max. DFT)

30 Cost Effect 30 Inspection Cost Effect Para. 6.2 Increased inspection activity about 100%

31 Process - before 31 Stock area area PSP PSP Quality control by QA system Periodically checked by the inspector Block fabrication 12R pass or 3 grinding, pass grinding or equivalent No Inspected inspection by the by inspector the inspector

32 Process - before 32 Mill Mill Maker PSP PSP (Sub-contractor) Quality control by their QA system Audited Periodically by Yard checked QM by the inspector Transportation Block fabrication (Sub-contractor) 12R pass or 3 grinding, pass grinding or equivalent No Inspected inspection by the by inspector the inspector

33 Process - before 33 SSP SSP Block Block painting SSP SSP P.E P.E & Erection joint joint Sa2.5 St3 or + Sa2.5 Sweeping as per or contract HPW or equivalent Inspection for incl. surface salt & dust preparation check 12 stripe coats on on small edges hole & welds rough welds DFT measurement as per SSPC Annex PA-2 3 Inspection Check min. for & max. final DFT coating condition CTF Damage St3 assessment, St3 Inspection incl. for surface salt & dust preparation check 21 stripe coats on on rough all edges welds & welds DFT measurement as per Annex 3 Check DFT measurement min. & max. DFT as per SSPC PA-2 CTF Inspection for final coating condition

34 Process - before 34 Repair/touch-up up minor all repair repair : confirm : QA system major CTF repair : confirm

35 Cost Effect 35 Summary Sub-item Design MH Production MH Material cost Manpower Cost Effect about 10% about 100% about 20% about 30% Remarks Additional costs for the paint manufacturers & Class fee to be considered separately

36 36 Thank you for attention