Adopted FY 2014 Capital Asset Management & Investment ... - TriMet

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Capital Asset Management & Investment Program Vehicles Light Rail Vehicles How Assets are Maintained & Condition Evaluated (continued) Pantograph Type 1 pantographs are on a ten year overhaul program schedule. The Type 2 and Type 3 pantographs are on an eight year overhaul program schedule. Type 4 Pantographs are monitored through the PM program and the reliability reporting program. An evaluation can be triggered by either of these or by the OEM recommended overhaul interval (eight years), whichever comes first. The evaluation will be weighed against the OEM recommendations and an overhaul plan is developed and performed on the fleet. The next evaluation interval is set by adding the OEM recommended interval to the overhaul completion mileage for the first component overhauled. HVAC The Type 1 HVAC units were installed as part of a fleet retrofit prior to the arrival of the Type 2 vehicle. Both the Type 1 and Type 2 fleets are equipped with a Sutrak HVAC unit, and these units initially experienced a very high rate of compressor failures. To correct these failures several modifications were made to the Sutrak unit and the compressors were upgraded to a more reliable model. All HVAC units are monitored through the PM program and the reliability reporting program, and fleet overhaul intervals are based on data collected from these programs. Overhaul TriMet's LRV maintenance program seeks to keep current with the entire scope of vehicle maintenance requirements, and therefore seeks to avoid requirements for mid‐life remanufacturing for its LRVs. Accordingly, long‐cycle tasks (beyond the 81,000 PM program cycle) are also scheduled based on continuing fleet condition assessment and design of overhaul campaigns. Each overhaul campaign bundles multiple overhaul tasks which are due, for simultaneous performance on each vehicle cycled through the campaign, for efficient overhaul program production. This progressive overhaul approach was recognized by USDOT in a 1995 report as best‐practice in the rail transit industry, preferable to mid‐life vehicle remanufacturing in terms of keeping the fleet continuously in service at a higher spare ratio and in minimizing fleet life‐cycle total cost. Page ‐ 38
Capital Asset Management & Investment Program Vehicles Light Rail Vehicles Condition Scale The fleet condition is rated against TriMet goals for serviceability, reliability, appearance, wear, and predetermined life cycle. The condition assessment is rated on a scale of 1‐5 as follows: 1 – Like new condition with routine cleaning and preventive type maintenance required, may still be under warranty. 2 ‐ Good Condition with routine cleaning and preventive type maintenance required 3 – Fair and serviceable condition, within range of mid‐life, with routine cleaning and some extensive maintenance or overhaul required. 4 – Poor condition, still serviceable, but near end of service life, with major maintenance, overhaul or replacement required. 5 – Replacement or overhaul needed immediately. Equipment is not serviceable. The following is the condition rating of the LRV Equipment: CAR BODY TRUCK to CAR BODY LRV Type Condition Rating LRV Type Condition Rating I 2 I 3 II, III 3 II, III 4 IV 2 IV 2 TRUCKS Gear Box Traction Motors Hydraulic Friction Rubber Vulcanized Tires and Friction Axle Bearings Brake Actuators Truck Components Brake Disc LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating I 3 I 3 I 3 I 3 I 2 I 3 II, III 4 II, III 3 II, III 3 II, III 3 II, III 3 II, III 3 IV 2 IV 2 IV 2 IV 2 IV 1 IV 3 CAR SYSTEM Couplers Doors Hydraulic Friction Brake Pump Units Bridgeplates Pantograph HVAC LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating LRV Type Condition Rating I 2 I 4 I 3 I NA I 3 I 3 II, III 4 II, III 4 II, III 3 II, III 3 II, III 3 II, III 3 IV 2 IV 2 IV 2 IV 2 IV 3 IV 2 Page ‐ 39
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ADOPTED FY13-14 Capital & Operating
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Adopted FY 2014 Capital Asset Management & Investment ... - TriMet

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