A. Attachmet 01 Specs_BonnevilleIISpareBearingSpecs_28MAY2020Update.pdf

Bonn PH II Spare GGB BPH2GGB

SECTION 01 22 00.00 28

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 GENERAL INFORMATION

In each instance, the contract price for an item will constitute full compensation as herein specified, as shown, or as otherwise approved. The contract price and payment will also constitute full compensation for all work incidental to completion of the item, unless such work is otherwise specifically mentioned for separate payment under another item. In the event any work is required by the specification sections or by the drawings and not specifically mentioned in the measurement and payment paragraphs, separate or direct payment will not be made, and all costs thereof are incidental to, and included in, the contract prices and payment for all items listed in the bid schedule.

1.2 MEASUREMENT

1.2.1 Job Measurement Items

Measurement items for the work of this contract for which contract job payments will be made are listed in the bid schedule and described below.

All costs for items of work, which are not specifically mentioned to be included in a particular job or unit price [EA] measurement item, shall be included in the listed job item most closely associated with the work involved. The job price for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided.

1.2.2 Unit Price [EA] Measurement Items

Measurement items for the work of this contract on which the contract unit price payments will be made are listed in the bid schedule and described below. The unit price [EA] for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for each of the unit price items.

1.3 PAYMENT

Payment for all work specified, shown or incidental to complete the work will be made as follows:

BASE BID ITEMS 0001-0003

SECTION 01 22 00.00 28 Page 1

Item No. 0001 Furnish Upper Generator Guide Bearing Shoes.

Payment for the furnishing of one (1) set of upper generator guide bearing stationary segments (shoes) unique to Bonneville Powerhouse II U11-18 will be made on a Job basis under Item No. 0001. Payment shall include labor, material, and equipment required to furnish the upper generator guide bearing shoes in accordance with Section 48 13 13.08 26.

Item No. 0002 Furnish Lower Generator Guide Bearing Shoes.

Payment for the furnishing of one (1) set of lower generator guide bearing stationary segments (shoes) unique to Bonneville Powerhouse II U11-18 will be made on a Job basis under Item No. 0002. Payment shall include labor, material, and equipment required to furnish the lower generator guide bearing shoes is accordance with Section 48 13 13.08 26.

Item No. 0003 Generator Guide Bearing Shipment (to Bonneville)

Payment for the packaging and shipment of one (1) set of generator guide bearing shoes will be made on a per unit [EA] price basis under Item No. 0003. Payment shall include labor, material, and equipment required to ship the generator guide bearings in accordance with SECTION 48 13 13.08 26, Paragraphs 3.3.1 through 3.3.2.

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

-- End of Section --

SECTION 01 22 00.00 28 Page 2

SECTION 05 05 23.20 26

WELDING

PART 1 GENERAL

1.1 GENERAL INFORMATION

This section covers welding. Deviations from codes, procedures, and drawings from applicable codes, approved procedures, and approved detail drawings will not be permitted without prior written approval. Welding of new bearings and weld repairs to existing bearings shall conform to the requirements of this specification, unless otherwise specified. Procedures shall be developed by the Contractor for welding all metals included in the work. Welding shall not be started until welding procedures, welders, and welding operators have been qualified. Weldments not governed by the Code shall be governed by appropriate portions of the American Welding Society's publications.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

ASME INTERNATIONAL (ASME)

ASME BPVC SEC VIII D1 (2019) Section VIII Division 1 Rules for Construction of Pressure Vessels

ASME BPVC SEC IX (2019) Qualification Standard for Welding and Brazing Procedures, Welders, Brazers, and Welding and Brazing Operators

AMERICAN WELDING SOCIETY (AWS)

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS B2.1/B2.1M (2014) Specification for Welding Procedure and Performance Qualification

AWS D1.1/D1.1M (2015; Errata 2011) Structural Welding Code - Steel

AWS QC1 (2007) Standard for AWS Certification of Welding Inspectors

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.

SD-06 Test Reports

Physical Tests of Specimens Welded in the Qualification Tests; G, SECTION 05 05 23.20 26 Page 1

HDC

Certified copy of reports of physical tests of specimens welded in the qualification tests, a minimum of 45 calendar days prior to the performance of work, paragraph "QUALIFICATIONS OF WELDERS".

Stress-Relief Time-Temperature Charts; G, HDC

Stress-relief time-temperature charts, a minimum of 45 calendar days after stress relieving parts, paragraph "Stress Relieving".

SD-07 Certificates

Qualification of Welder(s); G, HDC

Qualification of welder(s), a minimum of 45 calendar days prior to their performance of work, paragraph "QUALIFICATIONS OF

WELDERS".

Additional Operator Qualification Tests; G, HDC

Witness additional operator qualification tests, paragraph

"QUALIFICATIONS OF WELDERS".

Certification of Welding Inspectors; G, HDC

Certification of welding inspectors and qualifications for all assistant inspectors, a minimum of 45 calendar days prior to their performance of work, paragraph "General".

SD-08 Manufacturer's Instructions

Deviations from Codes, Procedures, and Drawings; G, HDC

Deviations from codes, procedures, and drawings, a minimum of 60 calendar days prior to their use, paragraph "GENERAL".

Welding Procedure, Specification and Reports of Test Results; G, HDC

Welding procedures, specifications and reports of test results, a minimum of 45 calendar days prior to the work, paragraph Welding Procedure, paragraph "Welding Procedure".

Welding Repair Procedure for Major Base Metal Repairs; G, HDC

Welding repair procedure for major base metal repairs, a minimum of 45 calendar days prior to the work, paragraph Welding, paragraph "Welding".

1.4 QUALIFICATION OF WELDERS

Welding operators, welders, and tack welders, shall be qualified and, as necessary, requalified for the particular type of work to be done.

Qualification shall be in accordance with one of the following codes: (1) Section 4, Part C, of AWS D1.1/D1.1M, or (2) Section IX of the ASME Boiler and Pressure Vessel Code (ASME BPVC SEC IX), or (3) AWS B2.1/B2.1M (for cladding), whichever is most applicable to the work being performed. The record of qualification of welder(s) shall be approved. The Contractor

SECTION 05 05 23.20 26 Page 2 shall certify by name the welders and welding operators so qualified including the date of qualification code, and the procedures under which qualified. Certification and testing of welders and operators shall be performed by an independent testing company. Prior qualification may be accepted provided the welder has performed satisfactory work within the preceding three months under the code for which qualified, and certification of prior qualification from an independent testing company is furnished. If at any time, the work of any operator appears questionable, such operator will be required to pass additional qualification tests to determine their ability to perform the type of work on which they are engaged. All such additional operator qualification tests for welding operators and the physical tests of the welded specimens shall be witnessed. All test plates and all welding wire and electrodes shall be submitted as required for making the qualification tests. The test plates shall be of the same material as that to be used in the work. The edges shall be grooved or beveled where required, and the technique of welding shall be the same as to be used in the work. The welding wire and electrodes shall be of the same size, type and brand as those to be used in the work. Three certified copies of reports of physical tests of specimens welded in the qualification tests report shall be prepared. All expense in connection with making the qualification or requalification tests for welding operators shall be borne by the Contractor.

1.5 SYMBOLS

Symbols shall be in accordance with AWS A2.4.

PART 2 PRODUCTS

2.1 WELDING MATERIALS

Welding materials shall comply with the appropriate sections of the ASME BPVC SEC VIII D1 or the appropriate AWS specification. Welding equipment, electrodes, welding wire, and fluxes shall be capable of producing satisfactory welds when used by a qualified welder or welding operator using qualified welding procedures.

PART 3 EXECUTION

3.1 WELDING OPERATIONS

3.1.1 Preparation for Welding

Members to be joined by welding shall be cut accurately to size and, where required, shall be rolled or pressed to the proper curvature. The edges of the members shall be sheared, flame-cut, machined, chipped, plasma gouged, arc-air gouged (except for stainless steel), or ground to suit the required type of weld joint. The cut surface shall expose sound metal free from lamination or carbonized material, or other injurious defects. The surfaces to be welded, at the time of welding shall be free from rust, oil, grease, dirt, moisture and other foreign matter for a distance of at least two-inches back from each edge of the weld.

3.1.2 Welding Procedure

The Contractor shall prepare a complete schedule of welding procedures consisting of detailed procedure specifications for each structure to be welded and tables or diagrams showing the procedure to be used for each required joint, along with certified copies of reports of test results, SECTION 05 05 23.20 26 Page 3 when applicable. Welding shall not be performed without an approved welding procedure, specification and reports of test results. For all other weld joints the qualification plates representing those joints shall be tested in accordance with the test requirements as stated in Section 4 of AWS D1.1/D1.1M. Applicable pre-qualified weld procedures in ASME BPVC SEC VIII D1 or AWS publications may be submitted for approval.

Surfaces to be welded vary from flat to vertical to overhead.

3.1.3 Preheat and Interpass Temperature

Preheating shall be performed as required by AWS D1.1/D1.1M, Subsection 5.6 and 5.7, and Annex I or as otherwise specified except that the temperature of the base metal shall be at least 70 degrees F. The material to be preheated shall be slowly and uniformly heated by approved means to the prescribed temperature, held at that temperature until the welding is completed and then permitted to cool slowly in still air.

3.1.4 Welding/Weld Repair

Welding shall be performed in accordance with Section 4, Part C, of AWS D1.1/D1.1M, unless otherwise stated herein or approved. The qualification of welders and welding operators shall be in accordance with AWS B2.1/B2.1M. A Welding Repair Procedure for Major Base Metal Repairs shall be submitted for approval at least 14 calendar days prior to performing repairs and welding shall not take place without prior written approval. Defective metal shall be removed by grinding, unless otherwise approved. The surfaces shall be thoroughly cleaned before welding and inspected visually and by the dye penetrant method. The resulting cavities shall be rewelded in compliance with Article 6.6 of AWS D1.1/D1.1M

3.1.5 Stress Relieving

Except for minor parts and parts specifically excepted from stress relieving, stress relieving of welded joints shall conform to the applicable requirements of Part UW of ASME BPVC SEC VIII D1 and AWS D1.1/D1.1M, except:

a. Localized stress relieving will not be permitted for any initial stress relief, unless otherwise specified herein. Where major repairs after initial stress relief must be made by welding, an approved repair procedure is required, and unless otherwise approved, the welded joints shall be stress relieved.

b. Parts fabricated by welding which are to receive machining shall be stress relieved at a time prior to final machining.

c. Stress-relief time-temperature charts shall be automatically recorded and a copy of each chart shall be submitted with identification of each part pertaining thereto.

3.1.6 Temporary Welds

Temporary welds shall be made under the controlled conditions prescribed herein for permanent work. All temporary welds shall be made using low-hydrogen welding electrodes by welders qualified for permanent work as specified elsewhere in these specifications. Preheat furnished for temporary welds shall be the same as for permanent welds, except that the minimum temperatures shall be 70 degrees F in any case. In making temporary welds, arcs shall not be struck in other than weld locations.

SECTION 05 05 23.20 26 Page 4

Each temporary weld shall be removed after serving its purpose, ground flush with adjacent surfaces and the adjacent surfaces restored to their original condition.

3.1.7 Tack Welds

Tack welds that are to be incorporated into the permanent work shall be subject to the same quality requirements as the permanent welds.

Preheating shall be performed as specified for temporary welds above. Such tack welds shall be cleaned and fused thoroughly with the permanent welds.

Multiple-pass tack welds shall have cascaded ends. Defective tack welds shall be removed before permanent welding.

3.2 INSPECTION

3.2.1 General

All welding shall be inspected to ensure that the welds conform to the requirements of this specification, the appropriate sections of ASME BPVC SEC VIII D1, ASME BPVC SEC IX, or AWS D1.1/D1.1M and the approved welding procedure. The CQC Welding Program shall guarantee complete compliance of all welds with the contract requirements.

3.2.2 Contractor's Quality Control (CQC) Welding Program

3.2.2.1 General

Inspections performed under the CQC Welding Program shall be in accordance with the specifications herein and Section 6 of AWS D1.1/D1.1M. The Contractor's weld inspector shall hold a current certification as a certified welding inspector (CWI) in accordance with Part UG-91 of ASME BPVC SEC VIII D1 for code welds, AWS QC1, and AWS D1.1/D1.1M, paragraph 6.1.4 for AWS welds or as otherwise specified. Copies of certification of welding inspectors and qualifications for all assistant inspectors shall be approved.

3.2.2.2 Inspection

a. Inspection and tests shall be performed as necessary prior to welding, during welding, and after welding to ensure that materials and workmanship meet the requirements specified. In addition to visual inspection, all welds shall be subject to non-destructive inspection, see Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING. As a minimum, the following amount of non-destructive inspection shall be performed:

(1) Ten percent of the full penetration welds shall be inspected by ultrasonic testing.

(2) Ten percent of the groove welds shall be inspected by ultrasonic testing.

(3) Ten percent of the fillet welds shall be inspected by magnetic particle testing or liquid penetrant testing.

(4) The welds shall be randomly selected and shall be representative of the welds on that weldment.

b. Any weld that does not meet the acceptance criteria in Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING, shall not be counted as

SECTION 05 05 23.20 26 Page 5 meeting the above inspection requirements. Rejection of any portion of a weld inspected on less than a 100 percent basis, by a method other than visual, shall be 100 percent inspected by the method used in finding the defect. This inspection will not count towards meeting the above quality requirements.

3.2.2.3 Inspection Agency

Non-destructive inspection of welds and evaluation of tests or inspections as to the acceptability of the welds shall be performed by an agency adequately equipped and qualified to perform such services; or the Contractor may make its own tests or inspections and evaluations, provided the Contractor has available suitable equipment and qualified personnel.

In either case, the Inspection Agency or Contractor's personnel qualifications shall meet the qualifications required in Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING. The evaluation of the tests or inspections shall be subject to approval and all records shall become the property of the Government. Testing performed as part of the Government Quality Assurance program shall be made in the presence of the Government.

3.2.2.4 Inspection Procedure

The procedure for making, evaluating and reporting the radiographic testing, ultrasonic testing, magnetic particle inspection, and liquid penetrant inspection of the welds shall conform to the applicable requirements of the ASME BPVC SEC VIII D1, AWS D1.1/D1.1M, or Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING. The ultrasonic equipment shall be capable of making a permanent record of the test indications and a record shall be made of each weld tested.

3.2.2.5 Acceptability of Welds

All welds shall meet the acceptance criteria specified in Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING and if not applicable shall meet AWS D1.1/D1.1M, Section 6 for visual, radiographic, ultrasonic, magnetic particle, and liquid penetrant as applicable for the procedure specified.

3.2.2.6 Repairs

Defective weld metal shall be removed by chipping, grinding or air carbon-arc (except for stainless steel), plasma, or oxygen gouging to sound metal. The surfaces shall be thoroughly cleaned before welding. The resulting cavities shall be rewelded in compliance with Part UW of ASME BPVC SEC VIII D1 and sections 5.26 and 6.6 of AWS D1.1/D1.1M. The preheat used in the initial welding shall be maintained during any weld repair work. A welding repair plan shall be prepared before repairs are made, unless otherwise approved in writing. Welds that have been repaired shall be retested by the same methods used in the original inspection. All costs of repairs and retesting shall be borne by the Contractor, except for repair of members cut to remove test coupons which were found to contain acceptable welds. When repairing surfaces that form water flow boundaries, such surfaces shall be finished to the Contractor's design or for site operations precisely to the original contour. Any templates needed shall be furnished by the Contractor.

SECTION 05 05 23.20 26 Page 6

3.2.3 Government Quality Assurance

3.2.3.1 General

All welds shall be subject to inspection by the Government. The Government reserves the right to require the Contractor to conduct non-destructive examination of any weld by any of the methods listed below and these inspections will be paid for under the appropriate miscellaneous hire bid item. The Government may require that coupons be cut from any location in any joint.

3.2.3.2 Non-Destructive Inspection

a. As directed by the Government non-destructive examination of the designated welds shall be performed by one of the following methods:

(1) Liquid penetrant inspection.

(2) Magnetic Particle inspection.

(3) Radiographic inspection.

(4) Ultrasonic inspection.

b. These welds shall meet the acceptance standards in Section 05 05 33.20 26, NON-DESTRUCTIVE TESTING based upon the respective welds and method of inspection specified in paragraph entitled, NONDESTRUCTIVE TESTING (NDT), regardless of the method used by the Government to inspect the weld. Ultrasonic or radiographic inspection may be used to ensure proper visual inspection was performed at all stages of the welding process, according to AWS D1.1/D1.1M, Section

6.6.1. Rejected Welds found by the Government Quality Assurance Program shall be inspected the full length of that weld by the Contractor at its expense using the NDT method which found the first defect in the weld.

3.2.3.3 Test Coupons

The Government reserves the right to require the Contractor to remove coupons from completed work when doubt as to soundness cannot be resolved by non-destructive inspection. Coupons will be subjected to a guided bend test. Should tests of any two coupons cut from the work of any welder show non-conformance with AWS D1.1/D1.1M, it will be considered evidence of negligence or incompetence, and such welder shall be removed from the work. When coupons are removed from any part of a structure, the members cut shall be repaired with joints which conform to ASME BPVC SEC IX or AWS D1.1/D1.1M, with peening as approved or directed to relieve residual stress.

SECTION 05 05 23.20 26 Page 7

SECTION 05 05 33.20 26

NON-DESTRUCTIVE TESTING

PART 1 GENERAL

1.1 GENERAL INFORMATION

This section covers nondestructive testing of materials. The testing set forth and the acceptance criteria shall apply to both weldments and material, as applicable.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

ASME INTERNATIONAL (ASME)

ASME BPVC SEC VIII D1 (2019) Section VIII Division 1 Rules for Construction of Pressure Vessels

AMERICAN SOCIETY FOR NONDESTRUCTIVE TESTING (ASNT)

ASNT SNT-TC-1A (2011; Supp 2010) Recommended Practice No.

SNT-TC-1A: Personnel Qualification and Certification in Nondestructive Testing and ANSI/ASNT CP-105: Training Outlines for Qualification of Nondestructive Testing Personnel

ASTM INTERNATIONAL (ASTM)

ASTM E 165 (2012) Standard Test Method for Liquid Penetrant Examination

AMERICAN WELDING SOCIETY (AWS)

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS B2.1/B2.1M (2014) Specification for Welding Procedure and Performance Qualification

AWS D1.1/D1.1M (2015; Errata 2011) Structural Welding Code - Steel

AWS QC1 (2007) Standard for AWS Certification of Welding Inspectors

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having "G" designation are for information only.

SD-06 Test Reports

SECTION 05 05 33.20 26 Page 1

NDT Inspection Reports; G, HDC

NDT inspection reports shall be submitted within 10 calendar days following the completion of the inspection, paragraph "General".

SD-07 Certificates

Qualifications of Nondestructive Testing Personnel; G, HDC

A minimum of 45 calendar days prior to their performance of work, paragraph "General".

Independent Party's Ultrasonic Inspection Qualifications; G, HDC

A minimum of 45 calendar days prior to their performance of work, paragraph "Ultrasonic Inspection (UT)".

Witness NDT Testing

Notice of witness NDT testing for site work 24 hours, excluding weekends, paragraph "General".

SD-08 Manufacturer's Instructions

Manufacturer's Methods and Procedures of Inspection; G, HDC

A minimum of 45 calendar days prior to their performance of work, paragraph "General".

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.1 NONDESTRUCTIVE TESTING (NDT)

3.1.1 General

a. Weldments and material shall be subject to inspection to determine conformance with the requirements of ASME SECTION VIII and AWS Codes:

AWS A2.4, AWS B2.1/B2.1M, AWS D1.1/D1.1M, AWS QC1, and provisions stated elsewhere in these specifications. An adequate inspection system shall be maintained as part of the Contractor's Quality Control Program and is subject to approval. All weld inspection and nondestructive testing shall be conducted by an approved third-party inspector . Qualifications of nondestructive testing personnel shall be prepared and submitted.

b. Manufacturer's methods and procedures of inspection, the evaluation of indications/defects and acceptance standards for indications/defects shall be prepared and submitted. Methods and procedures shall conform to the applicable requirements of the ASME and AWS Codes. The more restrictive code requirements shall govern.

c. Written NDT inspection reports shall be submitted for all NDT inspections performed. If the NDT is performed or witnessed by an independent laboratory, the laboratory shall provide a certified written report. The report shall include a complete description of the UT procedures used, equipment used, a mapping of the areas tested, SECTION 05 05 33.20 26 Page 2 shell or shoe number, and interpretation of results. The report shall specifically address areas of lack of bond between the babbitt and the shell or shoe and their accumulated total surface area relative to the area allowed for the zone. PT results shall include a mapping of the indications at the bond lines or photos. The report shall also address porosity and any cracking that is found.

d. All nondestructive testing (NDT) (Witness NDT Testing) performed by the Contractor or the subcontractor shall be witnessed by the Government, unless waived in writing or otherwise specified herein.

e. All defects shall be repaired as specified in Section 05 05 23.20 26, WELDING, or as otherwise specified.

3.1.2 Visual Examination (VT)

Prior to the use of any material, it shall be thoroughly visually examined to determine its suitability for use. Prior to any welding, the preparation of material for welding shall be visually inspected by the Contractor to assure compliance with the ASME Code and AWS publications, and during the welding for cracks and conformance to the qualified welding procedure. All completed welds shall be cleaned and examined carefully for insufficient throat or leg sizes, cracks, undercutting, overlap, excessive convexity or reinforcement, contour and finish, bead reinforcement, and other surface defects to insure compliance with the specification requirements. Defects shall be corrected or repaired as provided in subparagraph, Repairs, Section 05 05 23.20 26, WELDING, or other appropriate portion of these specifications.

3.1.3 Magnetic Particle Inspection (MT)

The magnetic particle tests and inspection shall conform to the applicable requirements of Mandatory Appendix 6, Methods for Magnetic Particle Examination (MT), of ASME BPVC SEC VIII D1. All indications exceeding the acceptance standards permitted by Appendix 6 shall be repaired at the Contractor's expense. The individual performing the MT tests shall, as a minimum, be NDT: ASNT SNT-TC-1A Level 2 qualified, with a minimum of 1-year of current experience at this level.

3.1.4 Ultrasonic Inspection (UT)

The Contractor's UT personnel shall be allowed to perform intermediate inspections only and final inspections shall be performed by a qualified independent party's UT inspector, unless otherwise approved, as specified herein. The qualifications of the Contractor's UT personnel shall be the same as those listed herein for the independent party's personnel. The independent party's ultrasonic inspection qualifications for performing the work shall, as a minimum, be NDT: ASNT SNT-TC-1A Level 3 qualified, or level 2 qualified, with three (3) years of current experience. The ultrasonic testing shall conform to applicable requirements of Mandatory Appendix 12, Ultrasonic Examination of Welds (UT), of ASME BPVC SEC VIII D1.

All indications exceeding the acceptance standards permitted by Appendix 12 of the Code shall be repaired. A certified written report by the independent party shall be prepared. The report shall set forth the UT procedures used, equipment used, a mapping of the areas tested and interpretation of results, specifically addressing lack of bonding or fusion, cracks, voids, and slag, the size and description of surface discontinuities and their accumulated total surface area relative to the inspected surface area, and the size and description of subsurface

SECTION 05 05 33.20 26 Page 3 discontinuities. The report shall be prepared prior to further work on the area examined, unless otherwise approved in writing. The testing shall be witnessed, unless waived in writing.

3.1.4.1 Equipment

a. Search Unit

(1) All testing of the babbitt bond shall be performed with a

2.25 MHz or 5 MHz longitudinal wave crystal.

(2) Transducer diameter shall be between 0.25 inch and 1 inch.

(3) Transducer gloves or delay lines shall be made of Lucite or other materials with similar sonic properties.

b. Couplants used for testing shall be either lightweight oil or glycerin, the viscosity of which is no more than SAE 30 oil.

c. Reference Blocks.

(1) A reference block shall consist of a soundly babbitted steel block with a scanning surface and babbitt thickness representative of the shoes being tested. The block shall be used to set the sensitivity of the instrument. A reference block with artificially unbonded areas shall be provided for comparison of indications for areas showing bond and lack of bond.

(2) Test sensitivity shall be such that the babbitt-to-base material interface is readily identified on the CRT. Details of sensitivity calibration and determination of bonded and unbonded areas shall be defined in the UT procedure.

(3) Reference blocks shall be kept available for frequent reference during actual testing.

3.1.4.2 Procedure

The Pulse-Echo Method of UT inspection shall be employed. The entire babbitt surface of each shoe segment shall be scanned, overlapping scan paths by at least 20 percent of the effective transducer width. Scanning rates shall not exceed 3 inches per second. Unbonded babbitt areas will result in an increase in the size of the reflection or indications of multiple reflections at the interface of the babbitt and base metal.

Babbitted areas located over anchoring dovetail grooves will be excluded from UT inspection.

All unbonded babbitted areas shall be carefully scanned to determine their size and configuration. The outside edges of all unbonded areas shall be marked on the surface of the Babbitt and recorded on inspection sheets.

3.1.5 Liquid Penetrant Inspection (PT)

The liquid penetrant tests and inspections shall conform to the applicable requirements of Mandatory Appendix 8, Methods for Liquid Penetrant Examination (PT), of ASME BPVC SEC VIII D1, except that penetration time is 15 minutes minimum below 50 degrees F. All defects disclosed by the penetrant test exceeding the degree permitted by Appendix 8 of the Code

SECTION 05 05 33.20 26 Page 4 shall be repaired at the Contractor's expense. The individual performing the PT tests shall, as a minimum, be NDT: ASNT SNT-TC-1A Level 2 qualified, with a minimum of 1-year of current experience at this level.

a. After the ultrasonic testing is completed all exposed babbitt to backing material bond lines shall be examined with the liquid penetrant (PT) method. This shall be done using a solvent-removable visible dye. The purpose of the PT bond line examination is to define the babbitt to backing material bond at edges, which the UT examination may not reveal. The PT method that the Contractor proposes to use shall be submitted for approval and shall be in accordance with ASTM E 165. Lack of bond indications greater than ¾ inches in length shall be marked on the bearing shell and mapped on inspection reports or documented in photos.

b. The surface area of the babbitt, including oil grooves, shall be PT examined for cracks and any and all indicated cracks recorded on inspection sheets or documented in photos.

SECTION 05 05 33.20 26 Page 5

SECTION 05 50 03.20 26

METALWORK FABRICATION, MACHINE WORK AND MISCELLANEOUS PROVISIONS

PART 1 GENERAL

1.1 GENERAL INFORMATION

This section covers fabrication and inspection of items of metalwork and machine work, and items made from Contractor's shop drawings. These requirements are in addition to other specification sections covering the specific items of work or indicated on the drawings.

1.2 REFERENCES

The publications listed below form a part of these specifications to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 325 (2017) Steel Construction Manual

ASME INTERNATIONAL (ASME)

ASME B4.1 (1967, R 2009) Preferred Limits and Fits for Cylindrical Parts

ASME B46.1 (2009) Surface Texture (Surface Roughness, Waviness and Lay)

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2015; Errata 2011) Structural Welding Code - Steel

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 11 01.00 28, SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Shop Drawings and Materials; G, HDC

Shop drawings and materials, a minimum of 45 calendar days prior to use/work, paragraph 1.4, METAL WORK AND MACHINE WORK DETAIL DRAWINGS, and 2.1.1, General.

SD-06 Test Reports

Inspection and Test Reports; G, HDC

Inspection and test reports shall be submitted within seven calendar days after completing inspection or test, paragraph 1.5, SECTION 05 50 03.20 26 Page 1

QUALITY CONTROL.

SD-07 Certificates

Filling of Depressions and Holes Procedure; G, HDC

Filling of depressions and holes procedure, 30 calendar days prior to the performance of work, paragraph "Unfinished Surfaces".

1.4 METAL WORK AND MACHINE WORK DETAIL DRAWINGS

Detail drawings for metal work and machine work shall include catalog cuts, templates, fabrication and assembly details and type, grade and class of material as appropriate. Elements of fabricated items inadvertently omitted on contract drawings shall be detailed by the fabricator and indicated on the detail drawings.

1.5 QUALITY CONTROL

Inspection and test reports shall be performed for the metalwork fabrication and machine work in addition to the applicable inspection requirements elsewhere specified. A detailed plan shall be prepared to record all measurements, and other details that indicate the plans and specifications are met.

PART 2 PRODUCTS

2.1 MISCELLANEOUS METALS AND STANDARD METAL ARTICLES

2.1.1 General

Miscellaneous shop drawings and materials, metal, and standard metal articles shall conform to the respective specifications and other designated requirements. Sizes shall be as specified or shown on drawings. Where material requirements are not specified, materials furnished shall be suitable for the intended use and shall be subject to Government approval.

2.2 FABRICATED METAL ITEMS

Metals, equipment, and miscellaneous material shall conform to the requirements referred to in these specifications and when not specifically covered, metals and materials of standard quality shall be furnished.

Materials shall be of the classification and grades approved by the Contracting Officer. Products other than those specified here in may be accepted when it is proved to the satisfaction of the Contracting Officer that they are equal in strength, durability, usefulness, and convenience for the purpose intended. In case the Contractor desires to use stock material not manufactured specifically for the work covered by these specifications, he shall submit evidence satisfactory to the Contracting Officer that such material conforms to the requirements of the specifications. Metals shall be free from scale, corrosion, and/or objectionable defects.

SECTION 05 50 03.20 26 Page 2

PART 3 EXECUTION

3.1 METALWORK FABRICATION

3.1.1 General

Material shall be straight before being laid off or worked. If straightening is necessary, it shall be performed by methods that will not impair the metal. Sharp kinks or bends shall be cause for rejection of the material. Material with welds will not be accepted, except where welding is definitely specified, indicated on the drawings, or otherwise approved (such as casting repairs). Bends, except for minor details, shall be made by approved dies, press brakes, or bending rolls. Where heating is required, precautions shall be taken to avoid overheating the metal and it shall be allowed to cool in such a manner as not to destroy the original properties of the metal. Shearing shall be accurately done and all portions of the work shall be neatly finished. Corners shall be square and true, unless otherwise indicated on the drawings. Re-entrant cuts shall be filleted to a minimum radius of 3/4-inch, unless otherwise approved.

Finished members shall be free from twists, bends and open joints. All bolts, nuts and screws shall be tight.

3.1.2 Dimensional Tolerances for Structural Work

Dimensions shall be measured by a calibrated steel tape or calibrated micrometers of approximately the same temperature as the material at the time of measurement. The overall dimensions of an assembled structural unit shall be within the tolerances indicated on the drawings or as specified in the section pertaining to the specific item of work. For contract and reference drawings only, individual measurements shall not deviate from the dimensions shown on the drawings by more than 1/16-inch, unless otherwise specified.

3.1.3 Structural-Steel Fabrication

Mechanically guided torches may cut structural steel, provided an accurate profile with a smooth surface free from cracks and notches is secured.

Flame cutting, shearing, and edge preparation shall be in accordance with Article 3.2 and Article 9.22 of AWS D1.1/D1.1M for welded construction and to the appropriate provisions of AISC 325. Cut surfaces shall be chipped, ground, or machined to sound metal.

3.2 MACHINE WORK

3.2.1 General

a. Tolerances, allowances, and gauges for metal fits between plain, non-threaded, cylindrical parts shall conform to ASME B4.1 for the class of fit shown or to the dimensions shown on the contract drawings. Where fits are not shown they shall be in accordance with good industrial practice for the intended application and approved prior to the beginning of work. Tolerances for machine-finished surfaces designated by non-decimal dimensions shall be within 1/64-inch unless otherwise specified. Tolerances for machine-finished surfaces designated by decimal dimensions shall be as follows, unless otherwise specified:

1 decimal place (X.X) ......... 0.300 2 decimal places (X.XX)......... 0.020

SECTION 05 50 03.20 26 Page 3

3 decimal places (X.XXX)........ 0.001

b. Sufficient excess material stock shall be allowed on surfaces requiring machining to ensure true surfaces of solid material while maintaining the specified minimum or finished plate thickness.

Finished contact or bearing surfaces shall be true and exact to secure full contact. All surfaces shall be finished in accordance with the contract drawings to ensure proper operation when assembled. Parts shall be accurately machined and all like parts shall be interchangeable. All drilled bolt holes shall be accurately located to ensure interchangeability.

3.2.2 Finished Surfaces

For Items Made From Contract and Reference Drawings:

a. Where surface finishes are indicated on the drawings or specified herein the symbols used or finished specified shall be in accordance with ASME B46.1. Values of roughness height specified are arithmetical average deviations expressed in micro inches. Roughness specified is the maximum value and any lesser degrees will be satisfactory unless otherwise called for on the drawing or in these specifications.

Compliance with specified surface shall be determined by a electronic profilometer and by visual inspection of the work compared to Roughness Comparison Specimens, in accordance with the provisions of ASME B46.1.

Values of roughness width and waviness height are not specified, but shall be consistent with the general type of finish specified by roughness height. Flaws such as scratches, ridges, holes, peaks, cracks or checks which will make the part unsuitable for the intended use will be cause for rejection.

b. Where the finish is not indicated or specified it shall be the most suitable for the particular surface, provide the class of fit required and shall be indicated on the shop drawings when machine finishing is provided by a symbol, which conforms, to ASME B46.1.

3.2.3 Unfinished Surfaces

All work shall be laid out to secure proper matching of adjoining unfinished surfaces unless otherwise directed. Where there is a discrepancy between adjoining unfinished surfaces they shall be chipped and ground smooth or machined to secure proper alignment. Unfinished surfaces shall be true to the lines and dimensions shown on the drawings and shall be chipped or ground free of all projections and rough spots. Filling of holes not affecting the strength or usefulness of the parts shall be filled in an approved manner. Filling of depressions and holes procedure shall be submitted for Government approval.

3.2.4 Shafting

Fillets shall be provided where changes in section occur. Cold-finished shafting may be used where key seating is the only machine work required.

3.2.5 Bolt Holes

Bolt holes shall be accurately located, smooth, cylindrical, and perpendicular to the member. The work shall be done to ensure the interchangeability of parts. Holes for bolts shall have diameters of not more than 1/16-inch larger than bolt diameters, unless required by

SECTION 05 50 03.20 26 Page 4

Contractor's design or contract or reference drawings. If the thickness of the material is not greater than the diameter of the bolts the holes may be punched. If the thickness of the material is greater than the diameter of the bolts, the holes may be drilled full size or sub-punched or sub-drilled at least 1/8-inch smaller than the diameter of the bolts and then reamed to full size. Poor matching of holes will be cause for rejection. Drifting occurring during assembly shall not distort the metal or enlarge the holes.

3.3 INSPECTION

Each bearing shall be inspected prior to assembly to determine the correctness of the fabrication and machining of the component parts.

Tolerances shall not exceed those shown on the drawings. Each bearing inspected shall be closely checked to ensure that dimensions and tolerances are met. If deviations from the tolerances are in non-critical areas, these deviations shall be submitted for Government approval and the deviations may be accepted at the Government's discretion. An inspection record shall be kept, for review by the Government, for each item inspected.

3.4 MISCELLANEOUS PROVISIONS

3.4.1 Protection of Machined Surfaces

Machined surfaces shall be thoroughly cleaned of foreign matter and shall be protected by suitable means. Unassembled pins and bolts shall be oiled and wrapped with moisture resistant paper or protected by other approved means.

3.5 WELDING

See SECTION 05 05 23.20 26, WELDING for welding procedures and welder qualifications.

SECTION 05 50 03.20 26 Page 5

SECTION 48 13 13.08 26

FURNISH GENERATOR GUIDE BEARING SHOES

PART 1 GENERAL

1.1 GENERAL INFORMATION

1.1.1 Description of Work

This section covers the requirements for furnishing one (1) set of twelve upper guide bearing shoes and appurtenances and one (1) set of twelve lower guide bearing shoes and appurtenances for Bonneville Powerhouse II Unit 11 (Oregon). The furnished generator guide bearings shall duplicate the existing generator guide bearings, unless otherwise noted in this section.

1.1.2 Description of Generator Guide Bearings

The Bonneville Powerhouse II U11 upper and lower generator guide bearings are pad-type bearings consisting of 12 shoes each. For the purposes of this specification, one "set" consists of 12 shoes. The Bonneville Powerhouse II U11 upper guide bearing has a nominal inner diameter of 52.065 inches, height of 8 inches, and were originally manufactured by Alstom; refer to reference drawing M-101. The Bonneville Powerhouse II U11 lower generator guide bearing has a nominal inner diameter of 58.062 inches, height of 8 inches, and were originally manufactured by Alstom; refer to reference drawing M-102.

The upper and lower guide bearings for Bonneville utilize jack screw inserts of identical design, as shown on M-103. Dimensions, fits, and estimated weights are based on original design drawings, design criteria and/or calculations. The Government does not warrant or guarantee that these values are accurate.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

ASME INTERNATIONAL (ASME)

ASME BPVC SEC VIII (2019) Section VIII Division 1 Rules for Construction of Pressure Vessels

ASTM INTERNATIONAL (ASTM)

ASTM A307 (2014) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM A354 (2017) Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners

ASTM A516/A516M (2017) Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate-

SECTION 48 13 13.08 26 Page 1 and Lower-Temperature Service

ASTM A681 (2008; R2015) Standard Specification for Tool Steels Alloy

ASTM B23 (2000; R 2014) Standard Specification for White Metal Bearing Alloys (known Commercially as "Babbitt Metal")

ASTM E165 (2018) Standard Test Method for Liquid Penetrant Examination

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2015; Errata 2011) Structural Welding Code - Steel

SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE)

SAE J429 (2014) Mechanical and Material Requirements for Externally Threaded Fasteners

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. Designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Schedule Submit at least 10 calendar days prior to commencing work, paragraph 3.4.1 b.

SD-02 Shop Drawings

Generator Guide Bearing Shoes G, HDC Submit at least 30 calendar days prior to commencing work, paragraph 3.1.3.

SD-03 Product Data

Inspection Sketches and Check Sheets Submit at least 30 calendar days prior to their use, paragraph 3.7.4.

Material Certification Report; G, HDC Submit at least 14 calendar days prior to using the material, paragraph 2.1.1.

Rust Resisting Compound Submit at least 30 calendar days prior to use, paragraph 3.3.1.

SECTION 48 13 13.08 26 Page 2

SD-04 Samples

Samples of Materials; G, HDC Submit within 14 days of request, paragraph 2.1.1.

SD-06 Test Reports

Pre-Babbitt Inspection Report; G, HDC Submit at least 14 calendar days prior to babbitting, paragraph 3.7.4.

Preliminary Inspection Report; G, HDC Submit at least 14 calendar days prior to final inspection of the finished components paragraph 3.5.2.

Final Inspection Report; G, HDC Submit within 7 calendar days of completing the work and a copy shall be placed inside the packaging for shipment, paragraph 3.7.5.

SD-07 Certificates

Laboratory Qualifications Submit at least 30 calendar days prior to use of the babbitt paragraph 2.2.

Notice of Inspection; I, HDC Submit at least 7 calendar days prior to inspections, paragraph 3.1.

SD-08 Manufacturer's Instructions

Generator Guide Bearing Fabrication Procedure; G, HDC Submit at least 30 calendar days before starting the fabrication process, paragraph 3.4.1.

Weld Repair Procedure; G, HDC Submit at least 14 calendar days prior to performing the repairs, paragraph 3.4.2.

Tinning and Babbitting Procedure; G, HDC Submit at least 30 calendar days prior to commencing the babbitting work, paragraph 3.5.1.

Babbitt Repair Procedure; G, HDC Submit at least 14 calendar days in advance of repairs as part of the repair procedure, paragraph 3.5.3.

1.4 FINAL INSPECTION AND ACCEPTANCE

Final inspection and acceptance for full compliance with the specifications will be made by the Government upon delivery to the project. Any materials or workmanship not complying with the provisions of these specifications will be cause for rejection. Corrections shall be made at the expense of the Contractor and are subject to approval. Tests may be repeated at the project site to ensure that materials and workmanship conform to contract requirements. Tests will be at the Contractor's expense if the refurbished components do not meet contract requirements.

SECTION 48 13 13.08 26 Page 3

1.5 WARRANTY

Warranty provisions of these specifications shall apply, except that notwithstanding inspection and acceptance, the finished components shall be warranted to conform to these specifications for one year after receipt and acceptance at delivery site.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 General

a. The classification and grade of material incorporated in the work shall be in accordance with the specifications designated herein, unless otherwise accepted in writing. All materials shall meet or exceed the standards as specified herein. When two or more of these standards apply, the most stringent standard shall be used. All materials, parts, and components supplied shall be new and unused and of the best available kind and quality. Workmanship shall be of the highest grade and in accordance with the best modern standard practice. Samples of materials shall be made available within 14 days of request.

b. An independent Material Certification Report shall be submitted prior to use of the material to verify conformance with these specifications.

2.1.2 Steel Plates

Steel plates shall conform to ASTM A516/A516M-S1, Grade 70, fully normalized and vacuum degassed, in accordance with supplementary requirement S1. Alternate methods and material may be submitted for Government approval.

2.1.3 Tool Steel

The jack screw inserts, to be fastened on the outer diameter of each shoe, shall be fabricated from a…