The track owner shall comply with the contents of the CWR plan approved or conditionally approved under § 213.118 . The plan shall contain the following elements-
Minimum Number of Inspections per Calendar Year1
Freight trains operating over track with an annual tonnage of: | Passenger trains operating over track with an annual tonnage of: | ||||
Less than 40 mgt | 40 to 60 mgt | Greater than 60 mgt | Less than 20 mgt | Greater than or equal to 20 mgt | |
Class 5 & above | 2 | 32 | 42 | 32 | 32 |
Class 4 | 2 | 32 | 42 | 2 | 32 |
Class 3 | 1 | 2 | 2 | 2 | 2 |
Class 2 | 0 | 0 | 0 | 1 | 1 |
Class 1 | 0 | 0 | 0 | 0 | 0 |
Excepted Track | 0 | 0 | 0 | n/a | n/a |
4 = Four times per calendar year, with one inspection in each of the following periods: January to March, April to June, July to September, and October to December; and with consecutive inspections separated by at least 60 calendar days. | |||||
3 = Three times per calendar year, with one inspection in each of the following periods: January to April, May to August, and September to December; and with consecutive inspections separated by at least 90 calendar days. | |||||
2 = Twice per calendar year, with one inspection in each of the following periods: January to June and July to December; and with consecutive inspections separated by at least 120 calendar days. | |||||
1 = Once per calendar year, with consecutive inspections separated by at least 180 calendar days. |
1 Where a track owner operates both freight and passenger trains over a given segment of track, and there are two different possible inspection interval requirements, the more frequent inspection interval applies.
2 When extreme weather conditions prevent a track owner from conducting an inspection of a particular territory within the required interval, the track owner may extend the interval by up to 30 calendar days from the last day that the extreme weather condition prevented the required inspection.
Adjusting/de-stressing means a procedure by which a rail's neutral temperature is re-adjusted to the desired value. It typically consists of cutting the rail and removing rail anchoring devices, which provides for the necessary expansion and contraction, and then re-assembling the track.
Annual re-training means training every calendar year.
Buckling incident means the formation of a lateral misalignment sufficient in magnitude to constitute a deviation from the Class 1 requirements specified in § 213.55 . These normally occur when rail temperatures are relatively high and are caused by high longitudinal compressive forces.
Buckling-prone condition means a track condition that can result in the track being laterally displaced due to high compression forces caused by critical rail temperature combined with insufficient track strength and/or train dynamics.
Continuous welded rail (CWR) means rail that has been welded together into lengths exceeding 400 feet. Rail installed as CWR remains CWR, regardless of whether a joint or plug is installed into the rail at a later time.
Corrective actions mean those actions which track owners specify in their CWR plans to address conditions of actual or potential joint failure, including, as applicable, repair, restrictions on operations, and additional on-foot inspections.
CWR join t means any joint directly connected to CWR.
Desired rail installation temperature range means the rail temperature range, within a specific geographical area, at which forces in CWR should not cause a buckling incident in extreme heat, or a pull apart during extreme cold weather.
Disturbed track means the disturbance of the roadbed or ballast section, as a result of track maintenance or any other event, which reduces the lateral or longitudinal resistance of the track, or both.
Mechanical stabilization means a type of procedure used to restore track resistance to disturbed track following certain maintenance operations. This procedure may incorporate dynamic track stabilizers or ballast consolidators, which are units of work equipment that are used as a substitute for the stabilization action provided by the passage of tonnage trains.
Pull apart or stripped joint means a condition when no bolts are mounted through a joint on the rail end, rending the joint bar ineffective due to excessive expansive or contractive forces.
Pull-apart prone condition means a condition when the actual rail temperature is below the rail neutral temperature at or near a joint where longitudinal tensile forces may affect the fastenings at the joint.
Rail anchors mean those devices which are attached to the rail and bear against the side of the crosstie to control longitudinal rail movement. Certain types of rail fasteners also act as rail anchors and control longitudinal rail movement by exerting a downward clamping force on the upper surface of the rail base.
Rail neutral temperature is the temperature at which the rail is neither in compression nor tension.
Rail temperature means the temperature of the rail, measured with a rail thermometer.
Remedial actions mean those actions which track owners are required to take as a result of requirements of this part to address a non-compliant condition.
Tight/kinky rail means CWR which exhibits minute alinement irregularities which indicate that the rail is in a considerable amount of compression.
Tourist, scenic, historic, or excursion operations mean railroad operations that carry passengers with the conveyance of the passengers to a particular destination not being the principal purpose.
Track lateral resistance means the resistance provided by the rail/crosstie structure against lateral displacement.
Track longitudinal resistance means the resistance provided by the rail anchors/rail fasteners and the ballast section to the rail/crosstie structure against longitudinal displacement.
Train-induced forces means the vertical, longitudinal, and lateral dynamic forces which are generated during train movement and which can contribute to the buckling potential of the rail.
Unscheduled detour operation means a short-term, unscheduled operation where a track owner has no more than 14 calendar days' notice that the operation is going to occur.
49 C.F.R. §213.119