Maintenance clearance checks

Other laser systems exist which may be fixed to tamping machines to ensure that, following maintenance, clearances are as expected. These systems use a rotating scanner head (which contains an EDM type laser) and measures and records the shape and relationship of a structure to the track, so that resultant clearances can be immediately checked and subsequently placed in a database for route clearance assessment. This provides a record which demonstates that, during maintenance, clearances are not adversely affected. 

Unknown XHE Maintenance on CTG 11-1 DC fuel oil pump was inadequate arcing horn clearances were not checked. 

When one considers the required maintenance level for the mechanical portion of a drum brake, it is generally very low. The main area to check is the brake clearances and that the spring brake engines are producing the correct holding torque. Generally the brake path does... 

A second ventilatory circuit, with mask, head gear, and chin strap, as well as a preventative maintenance schedule for changing filters and checking alarms are required. Nearly all ventilators need an electrical power source and although models with built-in battery supplies are preferred, the need for a backup battery should be discussed on an individual basis. Systematic pulse oximetry monitoring is not usually necessary, but may be required initially for highly ventilator-dependent patients, and subsequently, if there are issues with secretion clearance or frequent infectious exacerbations. 

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