980 CMR 10.03 - Performance Standards for Determining Site Sizes
(T) is a point at the top of the target;
(D) is a point closest to (T) on the top inside edge of the dike;
(PD) is a line in the vertical plane which intersects (D) at an angle of 45° above horizontal;
(w) is the inside distance across the top of the impounding space measured normal to (PD); and
(P) is located where (PT) and (PD) intersect at an angle of 90° or where (PD) equals 3 (w), whichever results in the shortest length of (PD).
F. GURE 4
SEE TEXT
TARGET | PROTECTION DISTANCE |
1. Any point in an area outside the property line which is not zoned for industrial use. | d = 3.6 (A)0.5 |
2. Any point in an area outside the property line which is zoned for industrial use. | d = 2(A)0.5 |
(t) = 9(h/G)0.5
where (t) is the time, (h) is the difference between the maximum height in feet of the contained liquid and the equilibrium height of liquid when impounded, and (G) is the acceleration of gravity.
K = thermal conductivity in (BTU/(HR) (ft) (F°)),
P = density in (1 lb/ft3), and
C = heat capacity in (BTU/(lb) (F°)). The test conditions should vary in terms of the spills' elevation, separate velocity, and quantity. 3. Dispersion distance (D) is determined on the basis that vapor detention space does not exceed:
Notes
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