W912P518T0068_Tspecs_RTA_-_Barkley_Lock_Towing_Bitt_Assembly_2018-09-10.pdf

W912P5-18-T-0068

US Army Corps Of Engineers Nashville District

TOWING BITT ASSEMBLY

REPLACEMENT

Barkley Lock Cumberland River Watershed Livingston County, Kentucky

Technical Specifications

RTA

September 2018

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Towing Bitt Assembly Replacement Barkley Lock W912P5-18-T-0068 RTA Livingston County, Kentucky

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 11 50

TOWING BITT ASSEMBLIES

PART 1 GENERAL

1.1 SCOPE

1.2 SUBMITTALS

1.3 REFERENCES

1.4 ACCESS TO WORK

1.5 DELIVERY

1.6 WARRANTY

PART 2 PRODUCTS

2.1 MATERIALS

2.2 FABRICATION

2.2.1 Structural Fabrication

2.2.1.1 Dimensional Tolerances for Structural Work

2.2.1.2 Structural Steel Fabrication

2.2.2 Welding

2.2.2.1 Welding of Structural Steel

2.2.2.2 Welding of Steel Castings

2.2.2.3 Welding of Steel Studs

2.2.2.4 Qualification of Welders

2.2.3 Machine Work

2.2.3.1 Finished Surfaces

2.2.3.2 Unfinished Surfaces

2.2.3.3 Pin Holes

2.2.3.4 Bearings

2.2.4 Miscellaneous Provisions

2.2.4.1 Lubrication

2.2.5 Shop Assembly

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

2.3.1 Nondestructive Testing

2.3.2 Inspection of Structural Steel Welding

2.3.2.1 Visual Examination

2.3.2.2 Nondestructive Examination

2.3.2.3 Test Coupons

2.3.3 Structural Steel Welding Repairs

2.4 BOLTS, CAPSCREWS, NUTS AND WASHERS

2.5 CLEANING AND PAINTING

2.5.1 Cleaning

2.5.2 Painting

2.5.3 Parts or Surfaces Not Painted

PART 3 EXECUTION

3.1 PROTECTION OF FINISHED WORK

3.1.1 Machined Surfaces

3.1.2 Lubrication After Assembly

3.2 INSTALLATION

3.2.1 Alignment and Setting

3.3 TESTS

SECTION 35 11 50 Page 1

3.3.1 General

3.3.2 Inspection

3.3.3 Retests

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SECTION 35 11 50 Page 2

SECTION 35 11 50

TOWING BITT ASSEMBLIES

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all labor, materials and equipment, and performing all work necessary and required to complete two (2) towing bitt assemblies at Barkley Lock Project as specified herein and on the drawings. All work shall be performed in strict accordance with this section of the specifications and the applicable drawings, and shall be subject to the terms and conditions of the contract.

Contractor shall also deliver the equipment to Barkley Lock Project.

Installation shall be performed by others.

The towing bitt assembly at Kentucky is the latest available design. It is compatible with the Barkley Lock tow haulage system. Therefore, it will be fabricated to be used at Barkley Lock.

Quantities shown on the contract drawings are for one (1) complete towing bitt assembly. Two (2) complete towing bitt assemblies shall be required under this contract. Each complete towing bitt assembly shall include, but not limited to the following items:

a. DWG 64W516: MK 64W516-1

b. DWG 64W517: MK 64W517-1 to MK 64W517-17

c. DWG 64W518: MK 64W518-3 to MK 64W518-5 and MK 64W518-7.

d. Other items: Grease fittings, grease and other required items for the complete towing bitt assembly. Contractor shall also provide a 10 feet (nominal length) of 140# A.R.E.A rail for testing. If needed, the government can provide a 10ft section (estimate length) of 140# rail, in which the bitt shall be built to travel upon. The test track shall be picked up, delivered, and returned at the expense of the contractor. Assistance in loading and unloading shall be provided by the government at the project site.

MK 64W518-1, -2 , 6, -8, and -9 on DWG 64W518 are not included in this contract.

1.2 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. PDF files are required for all submittals. The following shall be submitted:

SD-02 Shop Drawings

Shop Drawings; G

Shop drawings shall be required if contractor makes changes to the contract drawings.

SECTION 35 11 50 Page 3

SD-03 Product Data

Painting; G

SD-06 Test Reports

NDT Report; G

SD-07 Certificates

Qualification Of Welders; G

1.3 REFERENCES

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

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2008; Errata 2008) Structural Welding Code - Steel

ASME INTERNATIONAL (ASME)

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

ASME B46.1 (2002) Surface Texture, Surface Roughness, Waviness and Lay

ASTM INTERNATIONAL (ASTM)

ASTM A 325 (2009a) Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM A 574 (2008) Standard Specification for Alloy Steel Socket-Head Cap Screws

ASTM A153/A153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A193/A193M (2016) Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service and Other Special Purpose Applications

ASTM A449 (2014) Standard Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

ASTM E 165 (2009) Standard Test Method for Liquid Penetrant Examination

ASTM E 709 (2008) Standard Guide for Magnetic Particle Examination

SECTION 35 11 50 Page 4

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC SP 1 (2015) Solvent Cleaning

SSPC SP 5/NACE No. 1 (2007) White Metal Blast Cleaning

1.4 ACCESS TO WORK

The Project Representative and his assistants and other agents of the Government shall at all time have access to all places of manufacture where equipment or materials are being made or prepared for use under this contract, and shall have full access for unrestricted inspections of such equipment or materials.

The Project Representative is listed below:

Long Truong P.E Phone: 615-736-5665 Email: Long.C.Truong@usace.army.mil

1.5 DELIVERY

The Contractor shall prepare all materials and articles for shipment in such manner as to facilitate handling and to protect them from damage in transit, and shall be responsible for and make good any and all damage due to improper preparation or loading for shipment. All damage shall be repaired or replaced by the Contractor with no additional cost to the Government. Boxes and crates shall be marked and have a packing list enclosed showing the parts contained therein. The

Contractor shall contact the Facilities Manager below at least 14 calendar days prior to the delivery date to set up the delivery date and location.

Delivery will be made from Monday thru Thursday, 0600 - 1630 except Federal Holidays. Cost of shipping shall be included in the contract. Government shall provide the crane /forklift and crane operator as required to unload the towing bitt assemblies off the Contractor's delivery truck.

Barkley Lock POC Caleb Skinner 758 Barkley Dam Road Grand Rivers, KY 42045-9802 Phone: 270-362-4226 Email: John.C.Skinner@usace.army.mil

1.6 WARRANTY

All equipments and material furnished shall be warranted for 12 months after delivery.

PART 2 PRODUCTS

2.1 MATERIALS

Where the characteristics of any material are not explicitly specified, approved material meeting the requirements of the appropriate specifications of the American Society for Testing Materials or other recognized standard shall be employed. Incidental fittings, fixtures, accessories, and supplies shall be of approved manufacture and of standard

SECTION 35 11 50 Page 5 first-grade quality.

Materials shall be as indicated on the contract drawings. Any changes to the materials by the Contractor shall need approval from the Project Representative. Submit shop drawings for approval if the Contractor makes any changes to the materials, dimensions and fabrication from the Contract drawings.

2.2 FABRICATION

2.2.1 Structural Fabrication

Material shall be straight before being laid off or worked. Perform straightening, if necessary, by methods that will not impair the metal.

Sharp kinks or bends will be cause for rejection of the material. Material with welds will not be accepted except where welding is definitely specified, indicated or otherwise approved. Make bends using approved dies, press brakes or bending rolls. Where heating is required, take precautions to avoid overheating the metal and allow it to cool in a manner that will not impair the original properties of the metal. Proposed flame cutting of material, other than structural steel, will be subject to approval and shall be indicated on detail drawings. Shearing shall be accurate and all portions of the work neatly finished. Corners shall be square and true unless otherwise shown. Re-entrant cuts shall be filleted to a minimum radius of 3/4 inch unless otherwise approved. Provide finished members free of twists, bends and open joints. Bolts, nuts and screws shall be tight.

2.2.1.1 Dimensional Tolerances for Structural Work

Measure dimensions using an approved calibrated steel tape of approximately the same temperature as the material being measured. The overall dimensions of an assembled structural unit shall be within the tolerances indicated on the drawings or as specified in the particular section of these specifications for the item of work. Where tolerances are not specified in other sections of these specifications or shown, an allowable variation of 1/32 inch is permissible in the overall length of component members with both ends milled; component members without milled ends shall not deviate from the dimensions shown by more than 1/16 inch for members 30 feet or less.

2.2.1.2 Structural Steel Fabrication

Structural steel may be cut by mechanically guided or hand-guided torches, provided an accurate profile with a surface that is smooth and free from cracks and notches is obtained. Prepare surfaces and edges in accordance with AWS D1.1/D1.1M, Subsection 3.2. Where structural steel is not to be welded, chipping or grinding will not be required except as necessary to remove slag and sharp edges of mechanically guided or hand-guided cuts not exposed to view. Chip, grind or machine to sound metal hand-guided cuts which are to be exposed or visible.

2.2.2 Welding

2.2.2.1 Welding of Structural Steel

a. Welding Procedures for Structural Steel - Prequalify welding procedures for structural steel as described in AWS D1.1/D1.1M, Subsection 3.1 or qualify by tests as prescribed in AWS D1.1/D1.1M, SECTION 35 11 50 Page 6

Section 4. Properly documented evidence of compliance with all requirements of these specifications for previous qualification tests shall establish a welding procedure as prequalified. For welding procedures qualified by tests, the test welding and specimen testing will be witnessed and the test report document signed by the Project Representative. Approval of any welding procedure will not relieve the Contractor of the responsibility for producing a finished structure meeting all requirements of these specifications.

b. Welding Process - Perform welding of structural steel by an electric arc welding process using a method which excludes the atmosphere from the molten metal and conforms to the applicable provisions of AWS D1.1/D1.1M. Minimize residual stresses, distortion and shrinkage from welding.

c. Welding Technique

(1) Filler Metal - The electrode, electrode-flux combination and grade of weld metal shall conform to the appropriate AWS specification for the base metal and welding process being used or be as shown where a specific choice of AWS specification allowable is required. Use a controlled temperature storage oven at the job site as prescribed by AWS D1.1/D1.1M, Subsection 3.5 to maintain low moisture of low hydrogen electrodes.

(2) Preheat and Interpass Temperature - Perform preheating as required by AWS D1.1/D1.1M, Subsection 3.5 or as otherwise specified except that the temperature of the base metal shall be at least 70 degrees F.

(3) Stress-Relief Heat Treatment - Where stress relief heat treatment is specified or shown, perform in accordance with the requirements of AWS D1.1/D1.1M, Subsection 5.8 unless otherwise authorized or directed.

(4) Vibratory Stress Relief - Shall be applied to the fully welded structure prior to final dimension check and final machining.

d. Workmanship - Perform welding workmanship in accordance with AWS D1.1/D1.1M, Section 3 and other applicable requirements of these specifications.

(1) Preparation of Base Metal - Prior to welding inspect surfaces to be welded to ensure compliance with AWS D1.1/D1.1M, Subsection 3.2.

(2) Temporary Welds - Make temporary welds, required for fabrication and erection, under the controlled conditions prescribed for permanent work. Conduct preheating for temporary welds as required by AWS D1.1/D1.1M for permanent welds except that the minimum temperature shall be 120 degrees F in any case.

(3) Tack Welds - Subject tack welds that are to be incorporated into the permanent work to the same quality requirements as the permanent welds; clean and thoroughly fuse them with permanent welds.

SECTION 35 11 50 Page 7

2.2.2.2 Welding of Steel Castings

Remove unsound material from the surfaces of steel castings, to be incorporated into welded connections, by chipping, machining, air-arc gouging or grinding. Do not weld major connections designed for transfer of stresses if the temperature of the casting is lower than 100 degrees F.

Castings containing over 0.35 percent carbon or over 0.75 percent manganese shall be preheated to a temperature not to exceed 450 degrees F and conduct welding while the castings are maintained at a temperature above 350 degrees F. Welding will not be permitted on castings containing carbon in excess of 0.45 percent except on written authorization. Castings requiring welding repairs after the first annealing and castings involving welding fabrication shall be stress-relieved annealed prior to receiving final machining unless otherwise permitted.

2.2.2.3 Welding of Steel Studs

Conform to the requirements of AWS D1.1/D1.1M, Section 7, except as otherwise specified for the procedures for welding steel studs to structural steel, including mechanical, workmanship, technique, stud application qualification, production quality control and fabrication and verification inspection procedures.

2.2.2.4 Qualification of Welders

Certify that the qualification of welders and welding operators and tack welders who will perform structural steel welding have been qualified for the particular type of work to be done in accordance with the requirements of AWS D1.1/D1.1M, Section 4 prior to commencing fabrication. List the qualified welders by name and specify the code and procedures under which qualified and the date of qualification within the certification. Prior qualification will be accepted if welders have performed satisfactory work under the code for which qualified within the preceding three months.

Welders are required to repeat the qualifying tests when their work indicates a reasonable doubt as to proficiency. Those passing the re-qualification tests will be re-certified. Those not passing will be disqualified until passing. Contractor incurs all expenses in connection with qualification and re-qualification.

2.2.3 Machine Work

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 required unless otherwise shown on approved detail drawings.

Where fits are not shown they will be suitable as approved. Tolerances for machine-finished surfaces designated by non-decimal dimensions shall be within 1/64 inch. Sufficient machining stock will be allowed on placing pads to ensure true surfaces of solid material. Provide finished contact or bearing surfaces true and exact to secure full contact. Polish journal surfaces and finish all surfaces with sufficient smoothness and accuracy to ensure proper operation when assembled. Parts entering any machine shall be accurately machined and all like parts be interchangeable except that parts assembled together for drilling or reaming of holes or machining will not be required to be interchangeable with like parts. Accurately locate all drilled holes bolts.

2.2.3.1 Finished Surfaces

Provide surface finishes, indicated or specified, in accordance with

SECTION 35 11 50 Page 8

ASME B46.1. Values of required roughness heights are arithmetical average deviations expressed in microinches. These values are maximum. Lesser degrees will be satisfactory unless otherwise indicated. Compliance with surface requirements shall be determined by sense of feel and 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 shall be consistent with the general type of finish specified by roughness height. Where the finish is not indicated or specified use that which is most suitable for the particular surface, provide the class of fit required and be indicated on the detail drawings by a symbol which conforms to ASME B46.1 when machine finishing is provided. 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.

2.2.3.2 Unfinished Surfaces

Lay out all work to secure proper matching of adjoining unfinished surfaces unless otherwise directed. Where there is a large discrepancy between adjoining unfinished surfaces, chip and grind smooth or machine to secure proper alignment. Unfinished surfaces shall be true to the lines and dimensions shown and be chipped or ground free of all projections and rough spots. Fill in depressions or holes not affecting the strength or usefulness of the parts in an approved manner.

2.2.3.3 Pin Holes

Pin Holes shall be bored true to gages, smooth and straight, and at right angles to the axis of the member. The boring shall be done after the member is securely fastened in position.

2.2.3.4 Bearings

Bearings may be lined with babbit or bronze unless otherwise specified or shown. Where the bearing pressure is in excess of 200 psi, bearings shall be lined with bronze. For general purpose bronze bushings, the allowable bearing pressure should be below 1,500 psi with a maximum concentrated bearing pressure of not more than 5,000 psi (this refers to a bushing with an eccentric load). Anti-friction bearings of approved types and of sizes not less than those recommended by the bearing manufacturer for the duty intended will be permitted subject to approval. Properly align all bearings provided with a suitable means of lubrication. Install anti-friction bearings as required to provide for retention of the lubricant and to exclude dirt and grit.

2.2.4 Miscellaneous Provisions

2.2.4.1 Lubrication

The arrangement and details for lubrication shall be as shown. Thoroughly clean and lubricate, with an approved lubricant, all bearing surfaces before erection or assembly.

2.2.5 Shop Assembly

Assemble each machinery and structural unit furnished in the shop to determine the correctness of the fabrication and matching of the component parts unless otherwise specified. Do not exceed those tolerances shown.

Closely check each unit assembled to ensure that all necessary clearances

SECTION 35 11 50 Page 9 have been provided and that binding does not occur in any moving part.

Assembly in the shop shall be in the same position as final installation in the field unless otherwise specified. Perform assembly and disassembly work in the presence of the Project Representative unless waived in writing.

Immediately remedy errors or defects disclosed by the Contractor without cost to the Government. Before disassembly for shipment each piece of a machinery or structural unit shall be match-marked to facilitate erection in the field. Indicate the location of match-marks by circling with a ring of white paint after the shop coat of paint has been applied or as otherwise directed.

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

2.3.1 Nondestructive Testing

When doubt exists as to the soundness of any material part, such part may be subjected to any form of nondestructive testing determined by the Project Representative. This may include magnaflux, dye penetrant, x-ray, gamma ray or any other test that will thoroughly investigate the part in question. The cost of such investigation will be borne by the Government.

Any defects will be cause for rejection; replace and retest rejected parts at the Contractor's expense.

2.3.2 Inspection of Structural Steel Welding

Welding will be subjected to inspection to determine conformance with the requirements of AWS D1.1/D1.1M, the approved welding procedures and provisions stated in other sections of these specifications. Nondestructive examination of designated welds will be required.

2.3.2.1 Visual Examination

For all visual examination of completed welds clean and carefully examine for insufficient throat or leg sizes, cracks, undercutting, overlap, excessive convexity or reinforcement and other surface defects to ensure compliance with the requirements of AWS D1.1/D1.1M.

2.3.2.2 Nondestructive Examination

Perform as designated or described in the sections of these specifications, the nondestructive examination of shop and field welds covering the particular items or work

a. Testing Agency - The nondestructive examination of welds and the evaluation of examination tests as to the acceptability of the welds shall be performed by a testing agency adequately equipped and competent to perform such services or by the Contractor using suitable equipment and qualified personnel. The evaluation of examination tests are subject to the approval and all records become the property of the Government.

b. Examination Procedures - Conform to the following requirements.

1. Radiographic Testing - Making, evaluating and reporting radiographic testing of welds shall conform to the requirements of

AWS D1.1/D1.1M.

2. Magnetic Particle Inspection - Magnetic particle inspection of

SECTION 35 11 50 Page 10 welds shall conform to the applicable provisions of ASTM E 709.

3. Dye Penetrant Inspection - Perform dye penetrant inspection of welds conforming to the applicable provisions of ASTM E 165.

c. Acceptability of Welds - Welds will be unacceptable if shown to have defects prohibited by AWS D1.1/D1.1M, or possess any degree of incomplete fusion, inadequate penetration or undercutting.

d. Welds to be Subject to Nondestructive Examination (NDT)

Visual inspection is required for 100 percent of all welds.

Additionally, 20 percent of all welds shall be spot checked and nondestructively tested. Welds not passing the test shall be repaired and retested to assure compliance. Submit NDT report for approval.

2.3.2.3 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 nondestructive examination. When coupons are removed from any part of a structure, repair the members cut in a neat manner with joints of the proper type to develop the full strength of the members.

2.3.3 Structural Steel Welding Repairs

Repair defective welds in the structural steel welding repairs in accordance with AWS D1.1/D1.1M.

2.4 BOLTS, CAPSCREWS, NUTS AND WASHERS

All bolts, capscrews, nuts, and washers shall be galvanized or Zinc coated in accordance with ASTM A153/A153M.

Except as otherwise specified or shown, all bolts and capscrews shall conform to the minimum requirements of ASTM A 325, ASTM A193/A193M, GR B6 (Don't use GR B7 as shown on DWG 64W518), ASTM A449 coarse-thread series, class 2A fit for bolts, 2B fit for nuts. Bolts, capscrews and studs shall be furnished with nuts and washers as required. Socket head bolts in accordance with ASTM A 574 shall be used if interference exists when hexagon head bolts are used.

a. Bolt holes shall be accurately located, smooth, perpendicular to the member and cylindrical.

b. Holes for regular bolts shall be drilled or subdrilled and reamed in the shop and not be more than 1/16 inch larger than the diameter of the bolt.

c. Holes for fitted bolts shall be match-reamed or drilled in the shop.

Remove burrs resulting from reaming. Keep bolt threads entirely outside of the holes. The body diameter of bolts shall have tolerances as recommended by ASME B4.1 for the class of fit specified. Place fitted bolts in reamed holes by selective assembly to provide an LN-2 fit.

d. Holes for high strength bolts shall not have diameters more than 1/16 inch larger than bolt diameters. If the thickness of the material is not greater than the diameter of the bolts, the holes may be

SECTION 35 11 50 Page 11 punched. If the thickness of the material is greater than the diameter of the bolts the holes may be drilled full size or subpunched or subdrilled 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. Reaming to a larger diameter of the next standard size bolt will be allowed for slight mismatching.

e. All threaded connections shall be treated with thread locker or anti-gall compound.

2.5 CLEANING AND PAINTING

2.5.1 Cleaning

Remove deposits of grease or oil in accordance with SSPC SP 1 prior to white metal blast cleaning. Use clean cloths and clean fluids to avoid leaving a thin film of greasy residue on the surfaces being cleaned.

Protect items not to be prepared or coated from damage by the surface preparation methods. All grease and oil deposits are removed and SSPC SP 1 is performed. Provide white metal blasting cleaning SSPC SP 5/NACE No. 1 to remove all of the coating, mill scale, rust, oxides, corrosion products, and other foreign matter from the surface. All surfaces shall be primed as soon as practicable after cleaning and in all cases prior to contamination or deterioration of the prepared surfaces.

2.5.2 Painting

After cleaning, all surfaces shall be painted before formation of moisture on or contamination of the surfaces. All exterior surfaces shall be painted with Amerlock 400 system, Carboline 890 or Government approved equal.

Paint shall have the safety yellow color. Paint shall have the following characteristics: Two- component, high solids epoxy coating, high solids, low VOC, and good resistance to splash and spillages of chemicals. Submit paint product data for approval. The total of 3 coats (one primer and two topcoats) with total minimum dry film thickness of 22 mils shall be required. Painting shall not be performed prior to inspection by the Project Representative unless waived in writing. Machined-finished surfaces of metals which are exposed after installation shall also be painted in the shop by the contractor, except components whose operation, assembly, or disassembly would be affected by paint application.

2.5.3 Parts or Surfaces Not Painted

Paint shall not be applied on nameplates, adjusting screws, corrosion resisting steel or other components whose operation, assembly, or disassembly would be affected by paint application. Unpainted finished surfaces shall be protected as specified in Paragraph: Protection of Finished Work.

PART 3 EXECUTION

3.1 PROTECTION OF FINISHED WORK

3.1.1 Machined Surfaces

Thoroughly clean foreign matter off machined surfaces. All finished surfaces shall be protected by suitable means. Oil and wrap unassembled pins and bolts with moisture resistant paper or protect them by other

SECTION 35 11 50 Page 12 approved means. Wash finished surfaces of ferrous metals to be in bolted contact, with an approved rust inhibitor and coat them with an approved rust resisting compound for temporary protection during fabrication, shipping and storage periods.

All unpainted machine-finished surfaces shall be protected by Houghton-Vaughan Co.'s "Rust Veto No. 342" or approved equal for shipping and storage protection.

3.1.2 Lubrication After Assembly

After assembly, fill all lubricating systems with the lubricant specified and apply additional lubricant at intervals as required to maintain the equipment in satisfactory condition until acceptance of the work.

3.2 INSTALLATION

3.2.1 Alignment and Setting

Accurately align the tow haulage machinery so that no binding in any moving parts or distortion of any member occurs before it is fastened in place.

The alignment of all parts with respect to each other shall be true within the respective tolerances required. Set true machines to the elevations shown.

3.3 TESTS

3.3.1 General

The Project Representative shall be given two weeks notice prior to tests at the Contractor's shop. In the presence of a representative of the Project Representative, the towing bitt assembly shall be inspected and tested before being prepared for shipping. It shall be lubricated before the tests begin. When assembled, the towing bitt assembly shall turn freely by hand along the #140 A.R.E.A rail and not exhibit any interference or binding.

3.3.2 Inspection

Any deformation, variance, binding, interference or unusual deformation shall be cause for rejection of the assembly.

3.3.3 Retests

The Contractor is expected to assure that the assembly shall pass the tests before notifying the Project Representative of the test date. Costs of any retests shall be borne by the Contractor.

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(n

(o

(p

(q

(r)

2.2.5 Shop Assembly

2.3.3 Structural Steel Welding Repairs