AB-513, Repair Alteration Requirements - ABSA

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the pressure equipment safety authority 8.4 Preparation of the Work Scope Information that may need to be defined in the work scope that the owner provides to the repair organization includes, but is not limited to: base metal cleaning and other preparation requirements such as degassing (bake out), welding requirements, material specifications and material testing requirements, heat treatment, NDE and reports that define the extent of damage, any pressure test or pressure tightness test requirements, coating requirements, the Inspector responsible for inspection (Alberta in-service inspector or ABSA SCO) and the Inspector s hold and inspection points. 8.5 Preparation of Repair and Alteration Procedures (Methods, Strategies) The repair organization shall prepare a procedure and supporting documentation for each item to be repaired or altered. This shall meet the owner s requirements (work scope), describe the step-by-step method to be used, and provide all the information needed to ensure the repaired or altered item is safe for operation at the approved design conditions. The construction codes (refer to section 5 of this document), PCC- 2, API 510, API 570, API 577, NBIC and other applicable good engineering standards, provide detailed information that may need to be considered. Applicable information that must be clearly defined in the repair or alteration procedure or supporting documents (design drawings, specifications, data reports, sketches, etc.) includes but is not limited to: weld joint designs and dimensions, weld sizes, the welding procedure specifications that are to be used for each specific weld joint and any special welding considerations, material specifications and material testing requirements, NDE requirements, preheat requirements, postweld heat treatment (PWHT), any pressure testing requirements and any additional information designated by the owner. (Section 8.4 covers information that may need to be provided by the owner). For alterations, additional design information and calculations may be required for procedure registration purposes per 8.6. The Alberta repair and alteration report form, AB-40, is used to document the completion of a welded repair or alteration to a boiler or pressure vessel. This form does not need to be included in a package that is submitted to ABSA for registration. However, for a simple boiler or pressure vessel repair, such as a basic repair to public occupancy equipment, the front of the AB-40 form, supplemented as required by a drawing or sketch showing the weld details and other required information, may provide enough detail to describe the repair or alteration procedure. Some owners have developed standard procedures and strategies for typical repairs. These can provide excellent control methods for ensuring that all applicable factors are taken into consideration when preparing the item-specific repair plan. However, Issued 2012-12-13 AB-513 Edition 2, Rev 1 Page 14 of 26
the pressure equipment safety authority the owner must still assign competent persons to approve each individual repair job scope to ensure that the proposed procedure is appropriate and all the required information is available to ensure the mechanical integrity of the repaired item. The repair or alteration procedure must be accepted by the Inspector prior to the start of work. The repair organization must ensure that the repair procedures, supporting documents, welding procedures and other applicable quality system documents are available at the worksite and are understood by the persons who will be executing the work. 8.6 Submission of Repair and Alteration procedures and design information to ABSA PESR section 40 establishes that the owner must ensure that the design information for an alteration of pressure equipment is submitted to ABSA (Design Survey) for registration in accordance with PESR section 14. The allowable stresses of the original code of construction shall be used for all alterations, including re-rating. PESR section 40 also establishes that the owner may be required to submit to ABSA details of the repair procedures for acceptance. 8.6.1 Alteration procedures for Boilers and Pressure Vessels All alterations to ASME Section VIII Division 2 and 3 vessels require submission to ABSA design survey for review and registration. This requirement applies to the pressure boundary and anything attached to the pressure boundary. All other alterations to boilers and pressure vessels must be submitted to ABSA s design survey department for review and registration of the alteration design except that the following design changes do not require submission to ABSA design survey for review and registration: The addition of nozzles identical to existing nozzles, or for which reinforcement calculations are not required, which meet the other applicable parts of the original code of construction (example UG-45) and are located not less than 3 times the sum of their corroded inside diameters from existing nozzles. The addition of non-load bearing attachments to pressure-retaining items when postweld heat treatment is not required. Alterations that meet the registration exemption criteria above shall be documented as repairs and must be approved by the owner-user s engineer or Inspector when they are inspected and certified by the owner per section 6, or Issued 2012-12-13 AB-513 Edition 2, Rev 1 Page 15 of 26
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AB-513, Repair Alteration Requirements - ABSA

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