| USP
Water Purification/Batching System.
SUMMARY:
Replaced the existing control system on a pharmaceutical USP
water purification system with a new PLC/MMI based system allowing
password security and access, operator interface for setup,
process parameter configuration and alarm annunciation. System
controls monitored various quality devices (rupture disks,
filter pressures, temperature and UV status) as well as conductivity
and TOC.
DESCRIPTION:
The process takes incoming city water, purifies it through
various filter beds, UV treatment, and sub-micron particle
filtration to make USP grade water for manufacturing pharmaceutical
products. After the water is cleaned, it is stored in a reservoir
that maintains constant water circulation. Operators select
a destination tank, batch size and dispense temperature, and
the system will dispense the correct water volume at the correct
temperature.
Various control parameters are entered into displays that
provide upper and lower control limits for various system analog
devices. The system is completely self-monitoring, and when
a problem is determined to exist, the system will disable various
processes (Rinsing, Batching and Sanitizing) until the problem
is corrected and acknowledge.
All system events are archived, and the archive is periodically
offloaded onto a ZIP disk for long-term storage. Data may be
reviewed from the Operator Workstation by specifying date and
time delimiters. |
