Absorption Water Chillers

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Project #1

Project Detail

Project: East Coast Unit 02

Equipment: Single Stage Absorption Water Chiller

Date: November 2009 - December 2009

Vendor Location: Fabricator of Absorption Water Chiller in Durango, Mexico.

Item #1

Item #2

Visual Inspection per Inspection and Test Plan ITP-EC-2395-01 Item 4 and Drawing EC-2395-03 Rev 5.

Item Inspected: Section Generator/Condenser.

Findings: Joint Tubesheet to Shell in Section Generator/Condenser specified to be CJP Welded, however a weld preparation with no root gap (Joint completely closed) was done, Not in accordance with specified Welding Symbol, therefore a weld without complete joint penetration was obtained.

Re-Inspection: Repair completed by Vendor by back gouging to sound metal and applying the required back fillet weld, achieving the specified CJP. See Photo as illustration on referenced Issue.

Review on Welders Qualification Records per Inspection and Test Plan ITP-EC-2395-01 Item 3.

Items Inspected: Welders Qualification Records.

Findings: Per Reviewed Records, Welder Mr Juan Gonzalez participating in this project was Qualified in GMAW Process on December 18, 1995, fourteen years ago, therefore  Fraza Team has requested to Vendor to show evidences supporting on the continuity for the referenced Welder Qualification through the last fourteen Years. Vendor has only shown Continuity Records for the term between years 2003 and 2009 with no evidences shown for term from 1995 to 2003. Welder Qualification Not Acceptable to ASME Code Section IX paragraph QW-322.1(a).

Re-Inspection: Referenced Welder has been Re-Qualified by Vendor in GMAW Process in accordance with ASME Code Section IX.

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  • Project #1

    Project Detail

    Project: East Coast Unit 02

    Equipment: Single Stage Absorption Water Chiller

    Date: November 2009 - December 2009

    Vendor Location: Fabricator of Absorption Water Chiller in Durango, Mexico.

    • Item #1

      Visual Inspection per Inspection and Test Plan ITP-EC-2395-01 Item 4 and Drawing EC-2395-03 Rev 5.

      Item Inspected: Section Generator/Condenser.

      Findings: Joint Tubesheet to Shell in Section Generator/Condenser specified to be CJP Welded, however a weld preparation with no root gap (Joint completely closed) was done, Not in accordance with specified Welding Symbol, therefore a weld without complete joint penetration was obtained.

      Re-Inspection: Repair completed by Vendor by back gouging to sound metal and applying the required back fillet weld, achieving the specified CJP. See Photo as illustration on referenced Issue.

    • Item #2

      Review on Welders Qualification Records per Inspection and Test Plan ITP-EC-2395-01 Item 3.

      Items Inspected: Welders Qualification Records.

      Findings: Per Reviewed Records, Welder Mr Juan Gonzalez participating in this project was Qualified in GMAW Process on December 18, 1995, fourteen years ago, therefore  Fraza Team has requested to Vendor to show evidences supporting on the continuity for the referenced Welder Qualification through the last fourteen Years. Vendor has only shown Continuity Records for the term between years 2003 and 2009 with no evidences shown for term from 1995 to 2003. Welder Qualification Not Acceptable to ASME Code Section IX paragraph QW-322.1(a).

      Re-Inspection: Referenced Welder has been Re-Qualified by Vendor in GMAW Process in accordance with ASME Code Section IX.