recent revisions to api standard 1104

Recent Revisions to the Recent Revisions to the NDT Requirements in NDT Requirements in

the 20the 20thth EditionEdition

API Standard 1104API Standard 1104

Presented by:Presented by:David L. CulbertsonDavid L. CulbertsonEl Paso CorporationEl Paso Corporation

( Chairman of API 1104 Committee )


!! Welding of Pipelines and Welding of Pipelines and Related FacilitiesRelated Facilities

Twentieth Edition Twentieth Edition –– Published in November 2005Published in November 2005

The Standard will not become affective to the The Standard will not become affective to the Pipeline Operators until approval has been Pipeline Operators until approval has been granted and mandated by the U.S. Department granted and mandated by the U.S. Department of Transportation of Transportation -- Office of Pipeline Services Office of Pipeline Services


!! ForewordForeword

This standard was prepared by a formulating This standard was prepared by a formulating committee that include representatives of the committee that include representatives of the American Petroleum Institute, the American American Petroleum Institute, the American Gas Association, the Pipe Line Contractors Gas Association, the Pipe Line Contractors Association, the American Welding Society, Association, the American Welding Society, and the American Society for Nondestructive and the American Society for Nondestructive Testing, as well as representatives of pipe Testing, as well as representatives of pipe manufacturers and individuals associated with manufacturers and individuals associated with related industries. related industries.


!! Foreword Foreword (continued)(continued)

The purpose of this standard is to present The purpose of this standard is to present methods for the production of highmethods for the production of high--quality quality welds through the use of qualified welders welds through the use of qualified welders using approved welding procedures, materials using approved welding procedures, materials and equipment. Its purpose is also to present and equipment. Its purpose is also to present inspection methods to ensure the proper inspection methods to ensure the proper analysis of welding quality through the use of analysis of welding quality through the use of qualified technicians and approved methods qualified technicians and approved methods and equipment. It applies to both construction and equipment. It applies to both construction and inand in--service welding. service welding.


•• Two Sections of the Standard Two Sections of the Standard Deal with Nondestructive Deal with Nondestructive TestingTesting

!! Section 9 Section 9 –– Acceptance Standards for Acceptance Standards for Nondestructive TestingNondestructive Testing

!! Section 11 Section 11 –– Procedures for Procedures for Nondestructive TestingNondestructive Testing


•• Changes within Section 9.3 Changes within Section 9.3 RADIOGRAPHIC TESTING:RADIOGRAPHIC TESTING:

!! Section 9.3.7 BurnSection 9.3.7 Burn--ThroughThrough

9.3.7.19.3.7.1 A burnA burn--through (BT) is defined through (BT) is defined as a portion of the root bead where as a portion of the root bead where excessive penetration has caused the excessive penetration has caused the weld puddle to be blown into the pipe.weld puddle to be blown into the pipe.




9.3.7.29.3.7.2 For pipe with an outside For pipe with an outside diameter greater than or equal to diameter greater than or equal to 2.375 inch, a BT shall be considered a 2.375 inch, a BT shall be considered a defect should any of the following defect should any of the following conditions exist:conditions exist:

API Standard 1104API Standard 1104•• Changes within Section 9.3 Changes within Section 9.3

RADIOGRAPHIC TESTING:RADIOGRAPHIC TESTING:

!! Section 9.3.7.2 BurnSection 9.3.7.2 Burn--ThroughThrough

a. The maximum dimension exceeds ¼ inch and the a. The maximum dimension exceeds ¼ inch and the density density in any portionin any portion of the BTs image exceeds of the BTs image exceeds that of the thinnest adjacent parent material.that of the thinnest adjacent parent material.

b. The maximum dimension exceeds the thinner of the b. The maximum dimension exceeds the thinner of the nominal wall thicknesses joined, and the density nominal wall thicknesses joined, and the density in in any portionany portion of the BTs image exceeds that of the of the BTs image exceeds that of the thinnest adjacent parent material. thinnest adjacent parent material.




c. The sum of the maximum dimensions of c. The sum of the maximum dimensions of separate BTs whose image density separate BTs whose image density for any for any portionportion of the BTs exceeds that of the of the BTs exceeds that of the thinnest adjacent parent material and thinnest adjacent parent material and exceeds ½ inch in any continuous 12 inch exceeds ½ inch in any continuous 12 inch length of weld or the total weld length, length of weld or the total weld length, whichever is less. whichever is less.




9.3.7.39.3.7.3 For pipe with an outside For pipe with an outside diameter less than 2.375 inch, a BT diameter less than 2.375 inch, a BT shall be considered a defect should shall be considered a defect should any of the following conditions exist:any of the following conditions exist:




a. The maximum dimension exceeds ¼ inch and the a. The maximum dimension exceeds ¼ inch and the density density in any portionin any portion of the BTs image exceeds of the BTs image exceeds that of the thinnest adjacent parent material.that of the thinnest adjacent parent material.

b. The maximum dimension exceeds the thinner of the b. The maximum dimension exceeds the thinner of the nominal wall thicknesses joined, and the density nominal wall thicknesses joined, and the density in in any portionany portion of the BTs image exceeds that of the of the BTs image exceeds that of the thinnest adjacent parent material. thinnest adjacent parent material.




c. More than one BT of any size is present c. More than one BT of any size is present and the density and the density in any portionin any portion of the BTs of the BTs image exceeds that of the thinnest adjacent image exceeds that of the thinnest adjacent parent material. parent material.


Burn-Through


•• Changes within Section 9.6 Changes within Section 9.6 ULTRASONIC TESTING:ULTRASONIC TESTING:

!! Section 9.6.2 Acceptance Section 9.6.2 Acceptance StandardsStandards

9.6.2.19.6.2.1 Indications shall be considered Indications shall be considered defects should any of the following defects should any of the following conditions exist:conditions exist:


ULTRASONIC TESTING:ULTRASONIC TESTING:

!! Section 9.6.2.1 Acceptance StandardsSection 9.6.2.1 Acceptance Standards

a. Indications determined to be cracks (c).a. Indications determined to be cracks (c).

b. b. Individual indications with a vertical Individual indications with a vertical height (throughheight (through--wall) dimension wall) dimension determined to be greater than one determined to be greater than one quarter of the wall thickness.quarter of the wall thickness.


ULTRASONIC TESTING:ULTRASONIC TESTING:

!! Section 9.6.2.1 Acceptance StandardsSection 9.6.2.1 Acceptance Standards

c. c. Multiple indications at the same Multiple indications at the same circumferential location with a summed circumferential location with a summed vertical height (throughvertical height (through--wall) wall) dimension exceeding one half the wall dimension exceeding one half the wall thickness.thickness.


•• Changes within Section 9.6 Changes within Section 9.6 ULTRASONIC TESTING:ULTRASONIC TESTING:

!! Section 9.6.2 Acceptance Section 9.6.2 Acceptance StandardsStandards

9.6.2.69.6.2.6 Volumetric individual (VI) Volumetric individual (VI) indications shall be considered defects indications shall be considered defects when the maximum dimension of (VI) when the maximum dimension of (VI) indications exceedsindications exceeds 1/8 inch.1/8 inch.


RADIOGRAPHIC TEST METHODS:RADIOGRAPHIC TEST METHODS:

!! Section 11.1.4 Type of Section 11.1.4 Type of Image Image Quality Indicators (IQI)Quality Indicators (IQI)

Image quality indicators (IQI)Image quality indicators (IQI) shall shall conform to the requirements of conform to the requirements of either ASTM E 747 or ISO 1027 either ASTM E 747 or ISO 1027 wire IQIwire IQI. The company shall define . The company shall define which type of which type of IQI (ASTM or ISO)IQI (ASTM or ISO) is is to be used. The to be used. The IQIIQI shall be made of shall be made of a material that is radiographically a material that is radiographically similar to the material being welded.similar to the material being welded.


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