Ultrasonic Inspection of Welded Rail Joints

the Contracting Officer.

3.4.3

[The Government will inspect each weld ultrasonically following the visual

inspection.] Perform ultrasonic inspection and testing of each weld in

accordance with MIL-STD-1699. The Contractor shall correct or replace

defective welds. Clean rails at testing locations as directed by

Contracting Officer. The method of correction shall be as approved by

Contracting Officer.

3.4.4

Load Test

Load test of trackage will be performed by the Government prior to work on

concrete flangeways, encasements, and pavement. The load test is to be

performed after completion of track work, but before rails are covered by

concrete flangeways and encasements. The load test for crane trackage will

consist of a portal crane supporting a load designated by the Contracting

Officer traversing new track work. The crane shall operate without

difficulty, without binding of crane wheel flanges, or without visible rail

deflection. Vertical movement of the ends of crane [switches] [and]

[turntable frogs] shall not exceed 3 mm (1/8 inch) 1/8 inch during the

passage of any crane. Contractor shall correct or replace defective welded

rail joints, rail, and fittings. Correct the causes of excess deflections,

and retighten anchor bolts loosened under crane wheel loading.

3.4.5

Throw Mechanism Operational Test

Test throw mechanisms for effectiveness, security, integrity, and

reliability in accordance with the operational requirements of the

mechanical and electrical sections of the specifications.

3.4.6

Retesting

Retest corrected and replaced items.

3.4.7

As-Built Survey

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NOTE: An as-built survey may be required where

alignment of crane rails, gage reduction, or

orientation of fittings is expected to be critical

or problematic. The survey may be performed by

Contractor, Government, or independent surveyor.

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NOTE: Include bracketed (last) sentence if

Contractor is to perform as-built survey.

**************************************************************************

At completion of crane track replacement work, and before start of work on

concrete flangeways, encasements, and paving, [perform] as-built survey of

crane track alignment [will be performed by Contracting Officer. Notify

Contracting Officer [_____] calendar days in advance of the availability of

the crane trackage for conducting the survey. Execution of the survey will

require [_____] days for completion]. Deviation of as-built horizontal

crane rail alignment in excess of tolerances specified herein will

constitute grounds for rejection of the work. Surveys, in addition to the

SECTION 14606N

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