Process Design Engineering Package Continued.....
14.0 EQUIPMENT LAYOUT:
Free plot area that will be made available. An equipment layout that meets all stipulations of Chemical Industry shall be
furnished by DEC (Licensor shall provide indicative layout based on which DEC will develop the equipment layout) showing all
equipment in the unit and developed to show the following:
a) Location of equipment based on process, safety, operation, maintenance and construction aspects; taking into account OWNER's broad
requirement towards inter equipment distances and other codes and standards that licensor usually follows.
b) Plant limits and overall dimensions.
c) Main pipe rack / pipe track orientation and other main structures.
d) Plant north, actual north and predominant wind direction data furnished by OWNER.
15.0 PIPING SPECIFICATIONS:
Licensor shall employ DEC Piping Material Specifications (PMS) to standardize the design, which would be generated and provided to Licensor.
16.0 LINE LIST:
Line lists shall list all lines shown in P&lDs and include line number service, size, piping class designation, starting and
ending points, operating and mechanical design temperature and pressure, upset condition temperature and pressure
(when exceeding mechanical design conditions), insulation designation. The format for the same shall be furnished by DEC
at the outset of the project.
17.0 GENERAL INSTRUMENT SPECIFICATIONS:
a) Centralized control center shall have DCS to support Foundation Field Bus (FF Bus) technology. All field instruments shall be
compatible with FF Bus technology with digital signal processing.
b) Instrument Technical specification and Instrument data sheets shall be provided in BDEP according to FF Bus technology.
However, FF Bus technology shall be excluded for ESD, Fast loops like compressor controls, Critical process loops where faster
execution time is recommended and for analyzers. Licensor shall provide a list of control loops which are not using FF Bus technology,
these control loops will be identified suitably on relevant DS.
c) Advanced process controls as required for the process are to be incorporated.
d) Functional Schematics for Complex schemes with complete description and write-up shall be provided.
17.1 Instrument Data Sheets:
Datasheets will be provided for all instruments (field and control room) shown in P&lDs. Separate data sheet shall be provided for
each tag. The process data to be necessarily provided in BDEP are as follows.
a) Pressure & temperature instruments:
Tag number, location, operating &
mechanical design conditions, alarm set point control set point.
b) Level instruments:
Tag number, location, upper and lower fluid density
& viscosity, whether fluid is congealing, operating & mechanical design
conditions, alarm set point, control! Set point.
c) Flow instruments:
Tag number, location, density & viscosity for liquids,
molecular weight and compressibility factor for gases, whether liquid is
congealing¶ operating & mechanical design conditions, alarm set point,
control set point.
d) Control valves:
Tag number, location normal / maximum / minimum flow
rates, sizing pressure drop, density & viscosity for liquids, molecular
weight and compressibility factor for gases, whether liquid is congealing,
operating & mechanical design conditions, air failure position control
valve size, mechanical limit stops (if applicable).
e) Pressure relief valves:
Tag number, location, sizing flow rates, set
pressure, operating relieving Conditions, allowable overpressure,
density & viscosity for liquids, molecular weight and compressibility
factor for gases whether liquid is congealing, estimated valve size. In
case of flashing liquid discharges, outlet condition liquid and vapor flows
and physical properties will be provided for the project specified
superimposed backpressure.
f) On-line analyzers:
Tag number, location, physical properties to be
analyzed, ranges of measurement, density & viscosity for Liquid
molecular weight and compressibility factor for gases, operating &
mechanical design conditions, alarm set point, control set point.
17.2 Cause & Effect Diagram:
Logic diagram along with description shall be provided showing the emergency shutdown causes and the effects on the emergency
shutdown valves as installed in the unit Control algorithms of special loops, if any, used for operability/ optimization will be
provided with explanation. Licensor shall enclose write-up on Cause and Effect Diagram explaining control philosophy supported by
necessary Process Control diagrams, if required. Cause and effect diagram shall be provided for each unit separately.
18.0 ELECTRICAL DATA:
Summary of all process electrical consumers and provide estimated normal and maximum power consumptions.
Further provide* related electrical loads.