The Operating Envelope is the area surrounding any load handling equipment or excavating equipment.Ī period of time with specific beginning and ending time and durations for which the track, signals, bridges and other Operating System elements within the Operating Envelope are temporarily removed from service or modified in some other manner and train and other operations suspended or modified to allow construction or maintenance work to occur. This imaginary pair of lines, which define the outside boundaries of the Operating Envelope, extend vertically up and down infinitely.Īs at 29 February 2016, there were approximately 80 separate ‘Level 4 Operating Envelope Exceptions’ recorded in the QN Safety System.
Site Specific Work Plan (“SSWP”): A detailed Work Plan for items within or near the BART Operating Envelope, substations, or gap breakers.ĭespite Condition 2.1, all Modifications made by the Company shall be within the Operating Envelope of the Facility as defined by conditions 2.3 to 2.7. The Operating Envelope is the area surrounding any crane or load handling equipment. The Operating Envelope also includes the width and length of any active station platform. Despite Condition 2.1, all Modifications made by the Company shall be within the Operating Envelope of the Facilityas defined by conditions 2.3 to 2.7.ĭespite Condition 2.1, all Modifications made by the Company shall be within the Operating Envelope of the Facilityas defined by conditions 2.3 to 2.8.
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