BOILER EVALUATION

PERSONNEL QUALIFICATION

Powerplant Technologies Inc. (PTI) Personnel performing your inspection are currently qualified and certified in accordance with the American Society for Non-Destructive Testing Recommended Practice No. SNT-TC-1A.

PTI SCOPE OF INSPECTION

Powerplant Technologies Inc. proposes to furnish all necessary services for labor, materials, consumables, tools and equipment as required for completion of the following non-destructive examinations of the pressure components.

•   Secure copies of original data reports and subsequent R-forms filed with National Board.
•   Conduct a visual examination of all accessible pressure vessel parts, surface and weldments, identifying any gross mechanical deficiencies.  Collect samples of scale and/or deposits, if present, for analysis.  If agreeable, sample sections of tubes would be removed and analyzed to determine water treatment and metallurgical history.  Samples will be provided to water treatment firm for analysis or to am independent firm.  Charges for these tests would be billed at cost plus fifteen (15%) percent.
•   Conduct liquid dye penetrant and/or magnetic particle examinations of all drum weld seams and weldments.
•   Conduct random ultrasonic examination and spot check of shells, drums and furnace wall. Superheat, economizer tubes, etc.
•   Perform a visual inspection of all mom-pressure parts, refractory settings and other items of boiler proper fireside and waterside.
•   Check random tube passages for scale buildup and obstructions.
•   Complete a written evaluation of all findings and relevant indications with photographs for reference and documentation as necessary for discussion and review.

PRE-INSPECTION REQUIREMENTS

Client will secure prints of boiler setting plans for evaluation and reference as required.  Any past documentation or information on vessel maintenance repairs, and service would improve on qualitative results of evaluation.

Pressure vessel must be offline, open, cooled and isolated from any steam, feedwater, condensate and any other potential energy hazard or source.  Powerplant Technologies Inc. will apply lock-out/tag-out system and perform the appropriate atmospheric monitoring.

Removal of steam drum internals will be required as to facilitate inspection and will be billed at terms per attached manpower rate schedule, unless scope of work is conducted at time when internals are removed for other work scopes.

Cleanliness of the vessel interior is very important with regard to the inspection process.  Deposits or scaling of any kind have the potential for masking discontinuities and rendering the inspection process and results flawed.

•   If deposits or scaling are visible, it is to be removed from al weldments including a 6” wide band aligned with the centerline of each weldment.  This band is identified as being the “heat affected zone.”
•   Methods of removal may range from power brushing to light grinding bringing the metal surface to a dull gray finish.  All grinding residue must be vacuumed and removed from vessel.

Powerplant Technologies Inc. would be available to perform the vessel preparation referenced above for an additional cost.