questionnaire flangejjoints

7/30/2019 Questionnaire FlangeJjoints

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Organization :________________________________________

Address :________________________________________

Country :________________________________________

Contact Person :________________________________________

Phone/Fax :________________________________________

E-mail :________________________________________

This survey is confidential; no individual view will be identified; no individual will beattributable in the report in which the results of this questionnaire will be discussed.

Please read the complete questionnaire before answering. Most response can be made with asimple tick. If you do not wish to answer any question, please leave them blank.

Your co-operation in completing and returning this questionnaire is most appreciated.

1. Classification of your organization on the basis of the following

items:

Manufacturer User Inspection Vendor Notified Body Regulatory Body Others (specify) ..

2. Sector or field of activity (for users only):

Petrochemical & Refining Oil/Gas supplier Offshore Energy production Pipelines

Water supply Hydro power Nuclear power

Shipping Others (specify) .3. What type of equipment your company produce? (for manufacturers

only)?

Flanges Valves High pressure piping Pipelines Pressure Vessels Boilers Storage Tanks Others (specify)

4. What type of flanged Joints do you manufacture (for manufacturers only)

Raised Face, gasketed (of conventional design) Full Face, gasketed (of conventional design) Full Faced, non gasketed (of modern design) Others (specify) ..

5. What types of Flanged joints are mostly used in your organization (for

users only)?

Narrow Faced Flanges (Floating type/Gaske ted Flanged joints) Full Faced Flanges (Metal-to-Metal Joints with gasket or spacer) Full Faced Flanges (Metal-to-Metal Contact without gasket) Reverse Flanges Others (specify) ...

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6. Flanges manufactured in your organization comply with the

following standards (for manufacturers only)

BS 1560 Section 3.1 ANSI B16.5 DIN 2505 Others (specify) ..

7. Flanges used in your organization comply with the following

standards (for users only)

BS 1560 Section 3.1 ANSI B16.5 DIN 2505 Others (specify)

..

8. What ranges of Nominal Flange Sizes are manufactured in your

organization (for manufacturers only)?

inch to 10 inch (DN 15 to DN 250) inch to 30 inch (DN 15 to DN 750) Others (specify) .

9. What ranges of Nominal Flange Sizes are used in your organization

(for user only)?

inch to 10 inch (DN 15 to DN 250) inch to 30 inch (DN 15 to DN 750) Others (specify) .

10. What Pressure/Temperature Rating Class Flanges are

manufactured in your organization (for manufacturers only)?

150 to 2500

Or only these (please specify which one) .11. What Pressure/Temperature Rating Class Flanges are used in your

organization (for users only)?

150 to 2500 Or only these (please specify which one) .

12. What is the Service Temperature Range for using the flanged joints in

your organization (for users only)?

Please specify...

13. Your organization is a manufactures of (for manufactures only)

Flanges only Complete Flanged joint Assembly (including bolts, gaskets, pipes etc)

14. Your organization purchase (for users only)

Complete Flanged joint Assembly from one company

Flanges from separate company Bolts and washers from separate company Gaskets from separate company

15. What type of bolts, what property class and what standards for bolts (e.g.ISO, ANSI, BS etc.) are used in the flanged joints in your organization (for

users only)?

High Strength Bolts Normal Black Bolts Special surface treated Others (specify) Property Class (specify)

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Standard for bolts (specify)

16. Any special requirements are mentioned for flanged joint assembly

handling by your organization with the supply (for manufacturers

only)

Yes, complete Yes, some No

17. During which following process for flanged joint, instructions are

recommended by your organization (for manufacturers only)

Bolt Tensioning/Torque loads Fabrication process of flange with pipe or vessel Use of specific gaskets etc. Others (specify)

18. During which following process for flanged joint, special

instructions are followed by your organization (for users only)

Handling Bolt Tightening or Torque procedures Fabrication process of flange with pipe or vessel Use of specific gaskets, bolts etc. Others (specify)

19. If any type of Lubricant is used on the bolts during flanged joint

assembly (for users only) ?

Yes No If yes please specify any .

20. What types of bolt tightening/tensioning procedures are employed

during flanged joint assembly in your organization (for users only)?

Manual Torque Hydraulic Tensioning

(If used for wha t min imum bol t size )

Others (specify)

21. What types of gaskets are used for different type of joints (for users only)?

Metallic gaskets Non Metallic gaskets Others (please specify) ....

22. What is the probability of damage/crushing of gaskets during flanged joint

assembly (for users only)?

0% 10% 20% 50% 100%

23. What is the probability of replacement of gaskets during operation (for

users only)?

0% 10% 20% 50% 100% 24. With what type of Flanged joint more problem is faced during flanged

joint assembly (for users only)?

Raised Face, gasketed (of conventional design) Full Face, gasketed (of conventional design) Full Faced, non gasketed (of modern design) Others (specify) ...

25. What type of flanged joint the ratio of gasket problem is more (for users

only)

Raised Face, gasketed (of conventional design)

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Full Face, gasketed (of conventional design) Full Faced, non gasketed (of modern design) Others (specify)

.26. Do you face any difficulty during proper flanged joint pre-loading

(for users only)

Yes No If Yes, how often you get proper pre-loadOften Sometimes Not at all

27. If there should be proper trained staff in your organization for

flanged joint assembly (for users only)?

Yes No If Yes, Please specify..

28. Any major problem faced with gasketed flanged joints (for user

only).

No major problem If any (specify)

29. If you find any problems what remedies are used in your

organization (for user only)

Please specify..

30. Are you familiar with the modern design of non gasketed flanged

pipe joints?

Yes No If Yes, How much do you know about these modern joints?

Quite Enough Some Very small

31. What is your opinion for using non gasketed flanged joints?

Should be used Should not be used Should be tried in some applications

32. If you do not recommend to use non gasketed flanged joints, do you

support these following points;

Cost is very high No standards are available No practical evidences are available Should be passed by the International Standard Organizations Danger of leakage due to no gasket Risk can not be taken Others (specify) .33. If you recommend to use non gasketed flanged joints, do you support these

following points;

Should be tried in some applications for comparison Cost is not very high Company standard is available Practical evidence is available (where)..Should not be passed by the International Standard Organizations There is no danger of leakage due to no gasket Known risks can be taken Light weight and easy to handle and assemble Bolt tightening/torque is easy due to small bolt diameters Accurate pre-load can be applied No fatigue loading is present in any part of the joint due to static type of loading condition

No gasket is required Others (specify) .

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34. If you use only gasketed flanged joints in your organization, have

you tried to use the non gasketed flanged joints (for user only)

Yes No If No, please state the reason

If Yes, please specify on what basis or international standards

..

35. If only gasketed flanged joints are manufactured in your

organization, have you tried to manufacture non gasketed flanged

joints (for manufacturers only)

Yes No If No, please state the reason

. ...

If Yes, please specify on what basis or international standards

..

36. What do you think that non gasketed flanged joints will?

Replace the conventional gasketed flanged joints Yes No Be used as an option/alternative Yes No Never be used Yes No 37. If you recommend to use non gasketed flanged joints, would you

like to participate or give some suggestions.

Yes No

38. Do you consider a pipe joint as?

Discrete parts such as flanges, bolts, nuts etc. A component, consisting of parts pre-assembled

39. Do you know a number of Finite Element studies have been performed for

non gasketed flanged joints and have proved to be better than the gasketed

(conventional) flanged joints?

Yes No

40. Do you know that a number of Experimental studies have been performed

on non gasketed flanged joints and have proved their reliability, rigidity andcompatibility compared with the gasketed (conventional) flanged joints?

Yes No

41. Do you know about the collaboration between EPERC, PVRC and JPVRC

(under Technical Task Force TTF4, WP1) for the working on standards for

non gasketed flanged joints in the New European Standards?

Yes No If Yes, Please state your

comments.

If No, Would you like to get some information from EPERC

Yes No

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42. If standards for the non gasketed flanged joints will be written

would you like to use these;

Yes No If Yes, how early you would like to use, please state

.

43. If standards for the non gasketed flanged joints will go on delaying,

what would be your comments or attitude

Would like to use as early as possible Would like to use it but after some evidences and approval Would not like to use these

44. Do you recommend to use these non gasketed flanged joints as a

trial basis in an experimental test rig?

Yes No If Yes, Where, please specify...

45. If it is recommended form the flanged joint supplier to use it as one

unit and all the assembly procedures will be provided by the supplier,

would you

Agree Partially Disagree Totally Disagree

46. If it is not possible to use these non gasketed flanged joints what are the

major restrictions

Please specify any

..

47. Any comments or suggestions, please;

Please specify any

..

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