Method for assessing plant capacity

Details Method for assessing plant capacity Method for assessing plant capacity

2005-04-05

2005-04-05

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Statistical measurement

Reexamination Certificate

active

06876948

ABSTRACT:
A method to determine the capacity of a plant over a time window of interest, the time window having a time length P, having the steps of:(a) gathering the plant's historical production data over a selected time period of length L and calculating the cycle entries of availability fractions for that data set;(b) calculating capacity C(i,1) for each contiguous portion p(i,1) of length p of the cycle entries from the previous step;(c) storing that calculated capacities C(i,1);(d) randomly shuffling the cycle entries;(e) calculating the capacity C(i,2) for each contiguous portion p(i,2) of the shuffled cycle entries;(f) storing the calculated capacities C(i,2); and(g) repeating steps (e)-(f) for a sufficient number of iterations, and then creating a histogram of the calculated capacities C(i,j).

REFERENCES:
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patent: 6334095 (2001-12-01), Smith
patent: 401088892 (1989-04-01), None
Locks, Mitchell O.; Reliability, Maintainability, and Availability Assessment; 1995; pp. 193-211; Milwaukee, Wisconsin.
Smith, Jan B., et al; Plant Availability Measurement, Plotting and Simulation; Nov. 11-13, 1996; pp. 1-14; Amsterdam, The Netherlands.

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