1983-10-26 Workshop Meeting - Laserfiche WebLink

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e e ~- TurnerCollie0Braden Inc. July 29, 1983 Mr. Jerry L. Hodge City of La Porte .,. Page Five To determine the cause of this problem, we recommend the following course of action. a. Check all drain piping for obstruction or blockages, including the cyclone overflow, classifer overflow and the drain line to the plant sewer manhole. Clean and flush all lines and establish that they are flowing freely. b. Check the cyclone and classifier overflows and pipe connections for obstructions. c. Check pump speed to deter.mine if it is in range (approximately 700 rpm). d. Check pump discharge pressure to determine if it is in range (8-12 psig). e. "If possible, check the pump discharge flow rate. This can be done with a portable sonic type flow meter, if one is available. Flow rate should be 150-250 gpm. II everything appears to be in proper operating condition and the problem is still unsolved, we recommend that the she.aves on the grit pump be modified to lower the grit slJrry flow rate to a point where overflow of the classifier no 'longer occurs. 4. ELECTRICAL SWITCHGEAR ROOM - evaluate the electrical switch- gear room heat and ventilation requirements There has been a series of problems with overheating of motor starters, particularly those for the rotor drives, in the electrical switchgear room of the operations building. The electrical switchgear room is located at the south end of the operations building. The switchgear is contained in a room with dimensions of 30 feet by lG feet. Most of this area is used for storage. The space is not air conditioned and does not have any exhaust fans, openings, louvers or other such methods of ventilation. /1 n C. i .I