MOODY INTERNATIONAL. API MULTIPLE STENCILING of LINE PIPE Presented to NAPCA August 20, 2009

Transcription

1 MOODY INTERNATIONAL API MULTIPLE STENCILING of LINE PIPE Presented to NAPCA August 20, 2009 World Wide Project Engineering & Quality Inspection Services 1

2 SUBJECT at ISSUE What is it????? The common practice by pipe manufacturers of certifying to and marking of pipe to several API grades (as long as pipe has been tested to and meets requirements of all grades marked) World Wide Project Engineering & Quality Inspection Services 2

3 WHY THE CONCERN NOW? In recent years there seems to have been some confusion among some auditors that it was not allowed by API. Other auditors accepted the practice API 5L doesn t clearly address the issue World Wide Project Engineering & Quality Inspection Services 3

4 RECENT ACTIVITY API WG formed Lively discussions ensured Input received from various sources At June API meetings WG presented a proposal to MAG and to TGLP Proposal was revised and passed votes to go to Letter Ballot World Wide Project Engineering & Quality Inspection Services 4

5 WHAT DOES LETTER BALLOT MEAN Formal ballot sent to voting members of TGLP Voting members consist of users, mfgs, consults. Votes are submitted with or without comments All negative votes and comments must be addressed World Wide Project Engineering & Quality Inspection Services 5

6 THEN WHAT HAPPENS?? Votes received by API If Letter Ballot passes and all negatives are satisfied, then issue is scheduled for publication If Letter Ballot fails, issue may be dropped or returned to TGLP for further revision and reballoting World Wide Project Engineering & Quality Inspection Services 6

7 PROPOSAL For DUAL MARKING OF LINEPIPE This proposal is out for letter ballot to eligible members of the TGLP 11.4 Marking of Pipe to Multiple Grades: Marking of pipe to multiple grades is permitted only by agreement between the purchaser and the manufacturer within the following limits: World Wide Project Engineering & Quality Inspection Services 7

8 PROPOSAL (cont.) Pipe may have multiple markings within the following grade ranges: - L290 (X42) - > L290 (X42) to < L415 (X60) For L415 (X60) and above, each grade is marked individually. World Wide Project Engineering & Quality Inspection Services 8

9 PROPOSAL (cont.) The manufacturer is responsible to assure that the pipe conforms to all requirements of each of the certified grades. This allows pipe to be used as any of the grades individually. Pipe shall be marked to only one PSL level. World Wide Project Engineering & Quality Inspection Services 9

10 PROPOSAL (cont.) Where pipe is marked to multiple grades, a single inspection document shall be issued referencing the grade combination as marked on the pipe. The inspection document may contain a specific statement that pipe conforms to each grade individually. World Wide Project Engineering & Quality Inspection Services 10

11 PROPOSAL (cont.) After delivery of the pipe, no remarking or re-certification of the pipe to a different grade shall be permitted. Pipe shall only be re-graded and re-marked under the manufacturer s control. Certificates for regraded pipe may only be issued by the pipe manufacturer. World Wide Project Engineering & Quality Inspection Services 11

12 DIFFERENT INTERESTS DISTRIBUTORS Commercial Reduces area of stock yard MANUFACTURERS Commercial Destination for Excess inventory USERS Availability of supply May have regulatory issues World Wide Project Engineering & Quality Inspection Services 12

13 EXAMPLES OF REGULATORY ISSUES Weld Procedure Qualification Welder Qualification DOT Rules State Rules World Wide Project Engineering & Quality Inspection Services 13

14 FOR INSTANCE Major Electrode Mfg s group their rod s in ranges of yield strengths Mfg. A Mfg. B Mfg. C A25, A, B, X52 X65 X52 X65 X42, X46 x56 X42 X70 X56 X70 X60 X70 X56 X70 X65 X90 World Wide Project Engineering & Quality Inspection Services 14

15 OTHER FOR INSTANCES User A - Pipeline operators are required to validate all their utilized welding procedures including items such as what grades of materials are welded--- a change in base material constitutes an essential variable. When welding pipe of two separate materials, the procedure for the higher strength shall be used. World Wide Project Engineering & Quality Inspection Services 15

16 OTHER FOR INSTANCES (cont.) USER B The State of XXXX argues that when we deal with multi-graded pipe we must use the procedure for the highest grade pipe in the line (for the entire line--- exp. if an X52/X60 pipe is put into an X52 line, all welds must be qualified as X60) World Wide Project Engineering & Quality Inspection Services 16

17 MORE FOR INSTANCES (cont.) USER C relating to field bending of pipe. When laying pipe parallel to an existing pipeline (inside the original ROW) it may be difficult to cold bend the multiple stenciled pipe and maintain the required pipe separation. If the original installed pipeline was Grade B and the parallel pipe is ordered as Grade B but arrives with higher grade certification, then fittings or induction bends may have to be used. World Wide Project Engineering & Quality Inspection Services 17

18 SO WHERE DO WE GO FROM HERE?? Letter ballot is out, but voting closes on September 23 Only voting members of the API TGLP receive a ballot and can vote. World Wide Project Engineering & Quality Inspection Services 18

19 POSSIBLE OUTCOME May fail. Many mfgs think proposal is not liberal enough. Some users think their regulatory situations are not satisfied. Most users feel that if proper wording is in place, which they can cite as authority, then they find multiple stenciling as acceptable (revisions in API 1104?) World Wide Project Engineering & Quality Inspection Services 19

20 END! World Wide Project Engineering & Quality Inspection Services 20

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