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REACTOft LOW LEVEL ALARMS ABERDEEN CHEMICAL PLANT May 20, 1983
d. kdliUv^ WORK BY:
Steve C. Hillman Process Engineer
REVIEWED BY Veldon E. Messick Senior Process Engineer
APPROVED BY: R. A. Frohreich Chief Process Engineer
DTH 000052798
REACTOBfLOW LEVEL ALARMS ABERDEEN CHEMICAL PLANT Table Of Contents
I. PURPOSE II. DESCRIPTION OF DESIGN III. INSTRUMENT SPECIFICATIONS IV. P & I DIAGRAMS
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REACTOR LOW LEVEL ALARMS
I. PURPOSE OF DESIGN
ABERDEEN CHEMICAL PLANT V
This design will equip each vinyl reactor with low level alarm capabili ties. These alarms will be interlocked to prevent charging a reactor that has not been completely drained.
The Oklahoma City PVC Plant is planning to install this type low level detection instrumentation on their reactors this year. Their experience with these devices will be used to determine their applicability to this service.
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REACTOR LOW LEVEL ALARMS ABERDEEN CHEMICAL PLANT
V
II. DESCRIPTION OF DESIGN For a description of this design please refer to the P & I diagram. This design will install a low level transmitter on each vinyl reactor and instrumentation at each reactor control panel for indication and alarm capabilities. The P & I and this description are for D-300 reactor, but are typical for all ten (10) vinyl reactors. A new l%" nozzle will be installed on each reactor bottom head at the same radius from the axial center line of the reactor as the main dump nozzle. A new RF admittance type probe along with an on/off transmitter, LT-300, will be installed through the new nozzle for D-300. When this trans mitter detects a low liquid level in D-300 it will send a signal to the vinyl control room. This signal will cause indicator light, XL-300, which will be located on D-300 reactor panel, to illuminate when a low level is detected. This signal will also interlock with D-300 charge mode to prevent a charge permissive condition unless a low level is detected. Reactor low level alarm, LAL-300, will be actuated on D-300 alarm annunciator panel when D-300 is placed in the charge mode and a low level is not detected by LT-300.
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REACTOR LOW LEVEL ALARMS
ABERDEEN CHEMICAL PLANT
V
III. INSTRUMENT SPECIFICATIONS
Item
Description
LAL-300 LAL-400 LAL-500 LAL-600 LAL-700 LAL-741 LAL-742 LAL-743 LAL-744 LAL-745
D-300 Reactor Low Level Alarm D-400 Reactor Low Level Alarm D-500 Reactor Low Level Alarm D-600 Reactor Low Level Alarm D-700 Reactor Low Level Alarm D-741 Reactor Low Level Alarm D-742 Reactor Low Level Alarm D-743 Reactor Low Level Alarm D-744 Reactor Low Level Alarm D-745 Reactor Low Level Alarm
LT-300 LT-400 LT-500 LT-600 LT-700 LT-74I LT-742 LT-743 LT-744 LT-745
D-300 Low Level Transmitter D-400 Low Level Transmitter D-500 Low Level Transmitter D-600 Low Level Transmitter D-700 Low Level Transmitter D-741 Low Level Transmitter D-742 Low Level Transmitter D-743 Low Level Transmitter D-744 Low Level Transmitter D-745 Low Level Transmitter
XL-300 XL-400 XL-500 XL-600 XL-700 XL-741 XL-742 XL-743 XL-744 XL-745
D-300 Low Level Indicator D-400 Low Level Indicator D-500 Low Level Indicator D-600 Low Level Indicator D-700 Low Level Indicator D-741 Low Level Indicator D-742 Low Level Indicator D-743 Low Level Indicator D-744 Low Level Indicator D-745 Low Level Indicator
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CO_NOCO
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ENGINEERING CENTER
PONCA CITY, OKLAHOMA SPECIFICATION SHEET
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DTH 000052804
ENGINEERING CENTER
PONCA CITY. OKLAHOMA SPECIFICATION SHEET
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