1 Scope ……………………………………………………………………………………2 References ……………………………………………………………………………………3 Design ……………………………………………………………………………………3.1 Extruder, Gear Reducer and Motor Drives …………………………..3.2 Melt Pump, Timing Gear Reducer and Drive Motor …………………………..3.3 Diverter Valve ………………………………………………………………………………3.4 Automatic Screen Changer ……………………………………………………….3.5 Underwater Pelletizer with Variable Speed Drive Motor…………………….3.6 Pelletizer Knife Assembly ……………………………………………………….3.7 Die Plate ……………………………………………………………………………………3.8 Auxiliary Equipment ……………………………………………………….3.9 Noise Requirements……………………………………………………….3.10 Electrical Requirements ……………………………………………………….4 Controls and Instrumentation ……………………………………………………….5 Utility and Process Piping ……………………………………………………….6 Special Provisions ……………………………………………………….7 Testing ……………………………………………………………………………………8 Documentation ………………………………………………………………………………9 Painting ……………………………………………………………………………………10 Spare Parts ………………………………………………………………………………..10.1 Extruder ……………………………………………………………………………………10.2 Main Drive Motor ……………………………………………………….10.3 Main Drive Gear Box ……………………………………………………….10.4 Melt Pump ………………………………………………………………………………….10.5 Melt Pump Motor ……………………………………………………….10.6 Melt Pump Gear Box ……………………………………………………….10.7 Screen Changer Screen Pack Holder with Screens ………………………….10.8 Die Plate Assembly ……………………………………………………….10.9 Pelletizer ……………………………………………………………………………………10.10 Pelletizer Drive ……………………………………………………….11 Preparation for Shipment ……………………………………………………….Revision History………………………………………………………………………2
1 Scope
This Specification covers basic performance requirements and design features of Extrusion
Systems for polyethylene or polypropylene service.
All equipment and auxiliaries shall be designed for continuous full load duty. Systems shall
produce prime quality resin free from any bubbles, fish eye or foam for the complete grade
slate at the maximum expected production rates. The details of the extrusion line are the
complete responsibility of the Vendor from the inlet flange of the Extruder to the outlet flange
of the pelletizer. Total specific energy input shall be warranted to be less than or equal to the
values stated in Vendor’s proposal for each resin product.
The Vendor shall include all equipment required to make the extrusion system a complete
and workable system for the process conditions outlined in the data sheets. The Vendor shall
have the total responsibility for coordination to insure compatibility of the drivers and driven
systems.
The extrusion system and subsystems proposed shall be based on proven experience of at
least two installations with trouble free operation for continuous 8000 hours with the same
polymer process, grade slate and maximum capacities. Unproven features, configurations
and improvements by the vendor shall be clearly stated as “alternate” proposal.
2 References
Vendor shall comply with the following Standards, Codes and Specifications in addition to this
specification. The latest issue, amendments and supplements to these documents shall apply
unless otherwise indicated. In case of a conflict the requirements of this specification will
govern. All other questions shall be brought to the attention of Owner for resolution.
SABIC Engineering Standards (SES)
Z01-D05Units of Measurement
Z01-G03 Metrification
X01-S03 Instrumentation for Packaged Equipment
X01-S02 Instrument Control Panels
D04-G05 Guidelines for Instrumentation & Control Drawings
R07-E01 Control Valves
E06-S01 Induction Motors 150KW and Below
E06-S02 Induction Motors 185KW and Above
E06-S03 Synchronous Motors
E10-S01 Adjustable Frequency Drives for Low Voltage Motors
E10-S02 Adjustable Frequency Drives for Medium Voltage Motors
E19-S01 Packaged Equipment Electrical Requirements
S20-G01 Plant Equipment Noise Limits
Q01-T07Materials Identification Program
American Gear Manufacturers Association (AGMA)
6010-F97 Standard for Spur, Helical, Herringbone and Bevel Enclosed Drive
6001-D97 Design and Selection of Components for Enclosed Gear Drives
American Society of Mechanical Engineers (ASME)
Boiler and Pressure Vessel Code – Section VIII
Unfired Pressure Vessels, Div. 1
B16.5 Steel Flanges and Flanged Fittings
B31.3 Petroleum Refinery Piping
Instrument Society of American (ISA)
S 5.1Instrument Symbols and Identification
RP 7.1Pneumatic Control Circuit Pressure Test
Steel Structures Painting Council (SSPC)
For surface preparation .
Code of Federal Regulations
29 CFR 1910 Title 29, Part 1910 Occupational Safety Administration (OSHA) Standards
3 Design
3.1 Extruder, Gear Reducer and Motor Drives
3.1.1 Extruder
The Extruder components and subsystems shall be designed for continuous,
uninterrupted operation of 30,000 hours, except for brief down times for
replacement of pelletizer cutter knife assembly. Vendor shall furnish
completed Data Sheets and description of the Extruder including materials of
construction, hardness data, mechanical loads, etc. The Extruder shall be
designed for uniform heat distribution in the barrels and components. High
pressure steam heating is preferred.
a. The feed zone is to be jacketed or cored for water. Jacketing or
coring for steam and/or water is required for the mixing/kneading and
melt conveying process zones:
The coring method, if any, shall be specified and flow patterns
including inlet and outlet connections shall be specified with Vendor’s
Proposal. The Vendor shall specify the pressure rating. The Extruder
barrels and barrel jackets (cores) shall be stamped and hydrotested
to 150 percent of their respective design MAWP’s. Pressure relief
valves are to be provided for each jacket (core) zone that can be
overpressured (above their MAWP).
b. Seals shall be of a design which allow replacement without shaft
removal. Vendor shall also provide seal design and allowable shaft
velocity with the proposal.
c. Discharge Form: Vendor’s design shall assure that resin to be
completely fluxed over the full range of the operating conditions for good additive mixing and prevent inclusion of voids in the pelleted
product.
d. Melt Discharge Temperature: Vendor shall estimate and specify the
minimum and maximum discharge temperatures for the maximum
and minimum rates specified and for any temperature peaks at
intermediate rates, for each resin.
e. Melt Discharge Pressure: Vendor shall specify the minimum and
maximum operating pressures for each product and the maximum
pressure attainable at Extruder discharge.
f. Heat-Up Time: Equipment shall be designed to allow heating
(including resin thaw -out) from minimum ambient temperature to
Vendor’s recommended start – up temperature in eight (8) hours or
less, except as noted where the melt screen unit and die plate holder
shall be thawed in less than two (2) hours.
g. Polymer Pressure Relief: Over-pressure shutdown devices shall be
located between the Extruder and Melt Pump. Complete description
of the type and location of devices for protection from over-pressure
shall be provided by the Vendor in his proposal.
Basic process control shall be implemented through a DCS (supplied
by Owner) System.
h. Slot Control (if required): The slot control must consider the thermal
growth of the equipment.
i. Vent Port: A vent port is required. The design of the vent port shall
be such that the resin does not exit the vent. The Vendor shall
provide the design details with the proposal. The vent port shall be
provided with a plugged opening. The plug must extend down to the
melt flow so as to minimize dead ports.
j. Additive Ports: One flanged port with injection nozzle and one
plugged port downstream of the Extruder feed hopper and upstream
of the kneading section are required for injection of liquid additive.
Separate plugged ports shall also be provided for gas injection in
kneading section and Melt Pump suction. The plugs must extend
down to the melt flow so as to minimize dead spots. The location of
the ports will be provided by Owner during technical kick-off meeting.
k. Spare Ports: Two spare, plugged ports in the discharge of the melt
compartment are required for future use to measure melt pressure.
The port shall be a flanged connection, identical to what is required
for a Dynisco pressure transducer. The location of the ports will be
provided by Owner during technical kick-off meeting.
l. Rheometers: The Vendor shall provide appropriate rheometer
connections for future addition on the Extruder systems.
m. Transition Pieces: The Vendor shall provide high pressure steam
jacketed transition pieces. Design MAWP for the transition pieces
shall be provided in the proposal. They shall be stamped with design
MAWP of the body and steam jacket and hydrotested to 150% of
design MAWP’s. Metal-to-metal flange connections are required.
Vendor shall specify the location of the transition pieces and provide
recommended surface coating or polishing etc.
n. Vendor shall state the design hardness of the screw for systems
quoted without a Melt Pump.
o. The bending moment of the screw shall be stated for the maximum
rate of the lowest melt index grade. Vendor shall specify the
maximum deflection for the worst case and state the allowable
deflection limits.
p. A minimum capacity turndown ratio of 4:1 is required.
3.1.2 Gear Reducer, Bearings and Seals
a. Vendor shall state horsepower and torque rating of the gear and the
service factor. Vendor shall advise D/N number, bearing and gear
loads, torque values, quality number, tooth hardening and finish for
the proposed gear box. Gears shall be hardened and ground.
Grinding shall be done after gears have been hardened.
b. Rotational arrow shall be above the input shaft and shall be cast in or
permanently installed using a stainless steel name plate.
c. The mounting surfaces shall be machined within 0.13mm (0.005
inch) of the bottom support plane. All bottom support surfaces shall
be parallel to that plane in the transverse or longitudinal direction
within 0.17mm per meter (0.002 inch per foot).
d. Shaft key design shall comply with AGMA 6001 criteria.
e. Gear vendor shall furnish data on the maximum radial and thrust
bearing load carrying capacities and bearing clearances.
f. Gear vendor shall indicate on the drawings the quantity of lubricating
oil required at rated pressure and the heat load to be removed by the
oil.
g. Bearings shall be rated for a minimum L-10 life of 50,000 hours at
maximum continuous machine load and speed. Vendor shall provide
vibration monitoring probes at bearings, amplifiers and local panel
mounted readout. Vibration monitoring system shall be interfaced to
Owner’s Machinery Monitoring System and ESD as applicable.
h. The gear box shall be supplied with vertical jacking bolts.
i. Data provided with the quotation shall include gear tooth hardness,
hardening method, minimum and maximum backlash, shaft center
distances, shaft runout and concentricity, shaft surface finish and
hardness, diameter of roller or ball bearings, number of bearings,
number of vibration probes, details of gear to shaft mounting, method
of gear shaft balancing, gear ratios, maximum horsepower and
torque capability of each gearbox.
j. Data provided with drawing submittal shall include, amount of oil to
individual bearings, amount of oil to each gear mesh, expected
maximum thrust load and load magnitude.
3.1.3 Motors, Couplings and Guards
a. The Vendor shall supply an overload clutch between the motor and
the gear or other type of positive overload protection (if required).
The layout of the motor, overload clutch and gear shall not require
moving the motor to perform clutch maintenance. Shear pins are not
acceptable as primary devices. Other devices may be proposed as
an alternate.
b. OSHA approved guards shall be provided over all couplings, belts
and sprockets. Guards over clutches shall be cross vented for heat
removal.
c. The Vendor shall make provisions, e.g. extended shaft if necessary
for noise enclosure for the gear. Vendor shall state noise levels for
the gear box and motor with and without a noise enclosure.
d. The Main drive motor shall be in accordance with Specification E06S02
for Induction Motors or E06-S03 for Synchronous Motors as
applicable. (See motor data sheet for other requirements.) Base
quote shall be for single speed motor with a two speed gear box.
Vendor shall provide speed-torque requirements for the Main drive
motor during start-up conditions.
e. Auxiliary Drive Motor and Assembly (if required): The auxiliary drive
assembly shall consist of an induction motor mounted on the
gearbox shaft. The drive shall be equipped with a clutch that
disengages when the Main Drive is started. This drive shall be a slow
speed unit used for startup and emptying of Extruder and slow roll
over. Vendor to provide highest torque motor that can be outfitted for
the proposed Extruder. Alternate types of auxiliary drives may be
quoted. Vendor shall provide complete details in the quotation.
f. Spacer Couplings
Vendor shall supply all couplings required with a minimum service
rating of 1.5. Non-lube couplings are preferred. Gear type spacer
couplings (without shear pins) must be fitted with o-rings or seals
that will withstand the high temperature required in this area.
Lubrication frequency for couplings shall be at not less than 6 month
intervals.
All coupling halves shall be premounted on equipment shafts prior to
shipment. Coupling halves for the drive motors must be provided
with matched drilling.
3.2 Melt Pump, Timing Gear Reducer and Drive Motor
The following requirements shall apply if a Melt Pump is specified.
3.2.1 Melt Pump
a. The pump shall be a jacketed gear pump with external timing gears
designed to flange directly to the Extruder and develop adequate
differential pressure to meet the pelletizing requirements. Melt pump
shaft centerline level and gearbox centerline level shall be equal.
The pump will be connected to a gear reducer which is driven by an
induction motor. Vendor shall provide complete technical design data
including maximum shaft speed and bearing temperature at the
specified speeds, shaft seals type and cooling medium.
b. Melt Pump bearings shall be provided with metal temperature probes
(minimum of two) for melt temperature indication and measurement
of polymer temperature and located (close enough to the bearing for
accurate indication) in return quill. Bearing temperature indicator
alarm shall be located on local panel and DCS. Bearings shall be
rated for a minimum L-10 life of 50,000 hours at maximum
continuous machine load and speed. Bearings will have Automatic
Monitoring System consisting of a probe at the bearing, a noise
amplifier and alarm. Vendor shall include bearing monitoring with
complete description in the proposal.
c. Vendor shall state metallurgy of body and gears and method of
hardening teeth. Vendor shall provide water cooled visco seals
designed for zero leakage, including bullseye flow indicator on
cooling water lines. The pump is to be fitted with internal bearings
constructed of high speed tool steel. The pumped fluid shall lubricate
through grooves machined in the bearing surface. The Vendor shall
tabulate the bearing loads for all specified operating conditions noted
in the Data Sheets. Vendor shall furnish adequate shaft cooling (if
required). Vendor shall describe the technical design data with the
proposal.
d. The pump drive shall be protected from over-torque with a clutch.
Desch, Safeset or Auto-Guard couplings are preferred (shear pins
are not acceptable). All exposed coupling shafts shall have OSHA
approved guards (with provision for venting). Vendor shall state the
horsepower rating of the timing and reduction gears and AGMA
service factor associated with those ratings, quality number and
other pertinent mechanical data for evaluation by Owner. Vendor
shall quote as an alternate a parallel shaft reducer incorporating the
timing gears. The design requirements in section 4.1.2 for the main
gear reducer shall also apply to the Melt Pump gear reducers.
Vendor shall provide complete technical details of the Melt Pump to
gearbox couplings.
e. The driver for this pump shall be an induction motor with variable
speed drive. The Variable Speed Drive Controller must be
compatible for interface with the DCS pressure controller for motor
speed control. The motor will be started from the local panel and
then bumplessly transferred to DCS operation. Vendor shall specify
method of Melt Pump speed control (i.e. suction pressure or specific
energy etc.)
f. Inlet Pressure to the Melt Pump: Vendor shall specify the maximum
inlet pressure limitation in the quotation.
g. Discharge Pressure of the Melt Pump: The total system pressure
differential across the melt pump shall not exceed 241 Barg (3,500
psig). The melt pump shall be able to withstand discharge pressure
of 310 Barg (4,500 psig).
h. Discharge Temperature of the Melt Pump: Maximum discharge
temperature shall be limited to inlet temperature plus 20°C.
i. Body: Jacketed or cored for heating. Vendor shall specify design
pressure and flow. Preferred type of heating steam versus electrical
shall be specified.
j. Cooling: Rotor, bearing retainer and bearing cooling are required.
Sealing arc cooling is not required. Vendor to advise need for end
plate cooling. Vendor shall provide details in the proposal.
k. Pressure Relief (if required): Over-pressure shutdown devices shall
be located between the melt pump and screen changer. Complete
description of the type and location of devices for over-pressure
protection shall be provided by the Vendor in his proposal.
Basic Process Control logic shall be implemented through a DCS
(supplied by Owner) System.
l. All piping associated with the Melt Pump shall be flanged and laid
out for easy removal and maintenance.
m. Vendor shall make provisions for alarm if leakage in seal bearings
occurs resulting in external polymer leakage.
3.3 Diverter Valve
3.3.1 A hydraulically actuated diverter valve shall be provided between the Melt
Pump and the Screen Changer to divert full polymer flow prior to the die
plate. The intent is to allow for purging of the Extruder and/or Melt Pump and
to facilitate the automatic start-up sequence. Th full port design diverter valve
shall provide fast, positive action and leak tight sealing. The flanged
connections shall be non-gasketed metal to metal design. An additional
metal O-ring seal may also be provided. The purged material will exit in a
sideways-downward direction away from the Extruder to an Owner supplied
melt guide chute. The valve body shall be jacketed and cored to permit thaw
out with steam.
3.3.2 A polymer cutting system shall be quoted as an option for the diverted
polymer. The cutting system will be capable of cutting up the mass of
polymer discharging from the diverter valve. The vendor shall also quote a
water spray cooled chute to divert the polymer to a clean area along side the
machine for easy removal.
3.3.3 Vendor shall furnish a transition piece to connect the diverter valve to the
upstream and downstream equipment.
3.4 Automatic Screen Changer
a. A hydraulically operated automatic screen changer shall be included in the
compounding system located between the diverter valve and the pellet die
plate support. The screen changer will remove undispersed agglomerates,
trash, and other foreign materials from the polymer stream which could
cause plugging of the die holes. Equipment shall be rated for design
discharge pressure of the Melt Pump. Vendor shall offer options for
screenpack changer strainer and associated pressure drops for each resin in
the product slate.
b. Vendor shall verify that Screen Changer will withstand 103 Barg (1,500 psig)
differential pressure.
c. Flexible connections shall be braided stainless steel.
d. Vendor shall advise steam utility data for the Screen Changer.
e. Vendor shall advise type of controls included with technical details to ensure
that the Screen Changer does not inadvertently change position.
f. Pressure Relief : Over-pressure shutdown devices shall be located between
the screen changer and the die plate. Complete description of the type and
location of devices for protection from over-pressure shall be provided by the
Vendor in his proposal.
Shutdown logic shall be implemented through a DCS (supplied by Owner)
system.
g. Vendor’s design shall include provision for screen changer switch-over
without shutdown of the Extruder System.
3.5 Underwater Pelletizer with Variable Speed Drive Motor
3.5.1 The Vendor shall supply the mechanical details of the die and pelletizer with
the quotation. The Owner will provide an AC power supply for the adjustable
speed controller supplied by the Vendor. The Vendor shall provide a voltage
matching transformer (as required).
3.5.2 The motor shall be AC variable frequency drive system. The motor will be
started from the local panel and then bumplessly transferred to DCS
operation. The unit shall include a digital speed adjustment and control. The
speed shall be remotely adjustable with a local override.
3.5.3 Water connections to and from the pelletizer shall be flanged. Pellet water
piping shall be stainless steel. Minimum 4 m (12.5 ft.) long flexible stainless
steel flanged hoses shall be supplied by the Vendor. The flexible hoses shall
be adequate to move the pelletizer hub assembly away from the dieplate for
maintenance. Vendor to confirm hose length required for a 7 m (minimum)
ceiling.
3.5.4 Vendor shall specify the required water circulation rate.
3.5.5 The Vendor shall advise the method of connecting the cutter shaft to the
pelletizer motor. Safety factor for any coupling shall be 1.5 minimum.
3.5.6 Speed Control: Manual and automatic modes of control shall be provided at
both the DCS and local control panel. The local panel mode selection shall
provide for local operations to startup and maintain operations but not lockout
DCS control. The rotor speed shall be indicated with a digital display in
order to provide repeatable uniform pellet size. The speed sensor shall be
located on the cutter shaft. Ratio controller for setting pelletizer speed in
reference to Melt Pump speed shall have provisions to manually adjust and
bias the ratio both from the local panel and from the DCS.
3.5.7 Water Design Pressure: Vendor shall state maximum design pressure.
3.5.8 Sight Glass: The Vendor shall provide a high impact strength, laminated type
sight glass. The minimum burst pressure of the sight glass assembly shall be
10 times the design pressure of the water housing at the boiling point of
water at design pressure. Vendor shall provide complete details in the
proposal.
3.5.9 A level switch in the pelletizer housing shall be interlocked with a
pneumatically operated latch on the sight glass such that complete draining
of the water housing can be confirmed before the access door/sight glass
can be opened. Provide a limit switch to signal that the opening is fully closed
and latched. The user will provide interlock to prevent water flow to housing
when any quick opening door is open. The access door/sight glass shall be
designed, such that when the door/sight glass is opened for removal, a
positive “STOP” is provided at a partially open position, so that any water or
steam in the housing will slowly leak through the resulting gap and not splash
on operating personnel. Subsequent release of this latch will allow full
opening of the door.
3.5.10 Pressure Relief: The water chamber shall be provided with a pressure relief
device, discharging to a safe location only if there are valves and other
obstructions in the outlet piping from the water hose.
3.6 Pelletizer Knife Assembly
3.6.1 General: The hub shall be designed to permit quick change of the knife
assembly and to direct the incoming cooling water directly on the die face
and knives. Vendor is to quote the expected life of the knife blades specified.
3.6.2 Vendor shall specify number of knife blades and materials of construction in
the proposal. Vendor shall quote blade material options and expected life for
each type. Ferro Tic titanium carbide knife material is preferred. The vendor
shall ensure that knife blade hardness is slightly lower than the die face
hardness value.
3.6.3 Adjustment: Provision for automatic adjustment for clearance between the
die plate face and cutter assembly shall be provided. Blade assembly must
not be spring loaded. Parallelism of cutter hub to die plate face shall not
exceed 0.025mm (0.001 inch).
3.6.4 The pelletizer drive and the pelletizer head are to be mounted on a carriage
which runs on trolleys for die plate access.
3.6.5 Cutter Hub and Blade Bolting: Bolts and bolt holes that hold the blades in
place must be designed with a tight clearance so that the blades cannot
assume different positions when the bolts are tightened. Vendor’s design
should ensure that the knives are of adequate length to provide sufficient
coverage on pelletizer cutter outer die ring.
3.6.6 Instrumentation: Motion monitor transmitter shall be provided on the rotating
shaft, and interlocked with the Melt Pump motor to stop Melt Pump feed if
pelletizer motion stops.
3.7 Die Plate
3.7.1 The die plate shall be a high eficiency heat channel type with even heat
distribution. The vendor shall specify the most suitable medium (steam, hot
oil etc.) for heating the die plate
3.7.2 Resin Pressure Drop: Vendor to specify the expected pressure drop for the
maximum and minimum rate for each product indicated in the Data Sheets.
The pressure drop shall be 13,800 kPa (2,000 psi) or less.
3.7.3 Design pressure Drop Capability: Vendor to specify the maximum allowable
operating pressure drop across the die. Owner prefers the permissible
pressure drop to be 20,700 kPa (3,000 psi) or higher.
3.7.4 Facing: Tungsten carbide or other suitable material that will minimize wear
and assure good pellet quality. Vendor to specify coating type and thickness
in the proposal. Vendor shall advise the number of times die plate face can
be reground and if it can be re-plated.
3.7.5 Melt Fracture: Holes shall be sized to provide pellets per size listed on Data
Sheets. The number and shape of holes shall be such that the shear stress
does not exceed 345 kPa (50 psi) for any product. Vendor to detail the hole
configuration, hole diameter, land length and indicate the number of holes in
the proposal.
3.7.6 Testing: Vendor to state method for testing the integrity of the die channels
and steam passages. Steam passages to be capable of operating with high
pressure steam without leakage.
3.8 Auxiliary Equipment
3.8.1 Forced Lubrication Systems
a. The lubrication system shall provide cool, filtered oil to the timing and
reduction gears, thrust and radial bearings and other lubricated
parts. Flow indication is required on lube oil to each gearbox with low
flow switch to DCS with alarm and shutdown, indication of
permissive met in DCS. A separate system shall be provided for
each Extruder line. A common lube oil system for the main motor,
Extruder and Melt Pump gearbox is preferred. The common lube oil
system design shall ensure that the Melt Pump gearbox, the Main
Drive gearbox and other components receive their recommended oil
flow/pressures. Vendor to provide complete technical data for above
with the proposal.
Nitrogen purge arrangement for the lube oil system and gear box
shall be provided along with breather valve and regulator to prevent
dust and dirt getting into the system.
b. Vendor’s proposal shall meet the following minimum requirement
(i) The dual oil pumps shall be electric motor driven (max. 1800
rpm), full capacity, positive displacement type with carbon
steel casings. Alternating pump operating capability shall be
designed into the system by the Vendor for the main and
auxiliary pumps. The lube system controls shall have
automatic switchover capability to standby pump with
manual testing capability.
(ii) Pump drivers shall be sized for the pump power and
required starting torque at the viscosity of the oil at minimum
startup temperature.
(iii) Instrumentation shall include, but not be limited to,
temperature indicators, pump discharge pressure gages, low
sump oil level alarm, filter differential pressure gage with
differential pressure alarm and separate low lube oil
pressure transmitters for alarm and shutdown. A high
temperature alarm transmitter and automatic auxiliary pump
start shall also be furnished. Temperature controller for the
cooling water return line shall be provided to control the lube
oil temperature (assuring accurate lube oil pressure drop
across the cooler). Flow control shall be by orifice and not
needle-type flow control valves.
(iv) A shell and tube TEMA”C” oil cooler on the lube oil console
shall be provided. The cooler shall be designed to maintain
lube oil supply temperature at or below Vendor’s
recommended value. Lube oil shall be on the shell side.
Vendor shall provide removable heads for cleaning. If
required, a thermal safety valve 3/4″ X 1″ shall be provided
on the return cooling water lines from the oil coolers.
(v) Lube oil filtration shall be to 20 microns or better. Two full
flow cartridge filters with a switchover valve shall be
provided.
(vi) The lube oil heater is to be a thermostatically controlled
electric type of sufficient capacity to heat lube oil from the
minimum specified ambient to operating temperature in four
hours. Heater watt density is not to exceed 2.3 W/cm2.
(vii) The complete unit is to be skid mounted with single lube
supply and return connections. All piping and tubing
including valves shall be stainless steel. All connections shall
be socket-welded or flanged, except the open end of drain,
vent and instrument valves, which may be threaded. Seal
welding of threaded connections in oil piping is not
permitted. Owner shall supply stainless steel interconnecting
pipe between the lube oil skid and the Extruder.
(viii) All control valves shall be supplied with a position
(ix) Indicator for open and close position.
(x) Vendor shall provide minimum oil pressure at operating
temperature, expected oil temperature rise at bearings.
(xi) Lube oil reservoir (if required), shall be 304L SS, provided
with following:
(1) 20″ cleanout port
(2) Sloped bottom 6 mm/305m (1/4″ /ft) with 2″ NPS drain
connection with valve.
(3) Fill vent and level indicator with armored glass and breather
(4) Mist eliminator w/ breather (if required)
3.8.2 Tempered Water System (if required)
a. The tempered water system shall include one make-up water tank of
carbon steel with automatic level control and all necessary
indicators, alarms, shutdown interlocks, valves and piping. The
cooling unit shall be furnished with two (2) pumps with solid spacer
couplings designed for manual switchover.
b. The cooling unit shall include a shell and tube heat exchanger to be
designed for maximum cooling capacity required plus 20% and
furnished with a pneumatic temperature control valve for temperature
control.
c. A self supported manifold and valve stand shall be provided by the
Vendor.
3.8.3 Hydraulic Unit
The hydraulic oil control systems, reservoir, pumps/motors, dual filters,
accumulators and control valve manifolds for the diverter valve and screen
changer shall be mounted on one console. A separate hydraulic console is to
be furnished for each compounding line. Systems are to include stainless
steel reservoir and piping, pumps, relief valves, 20 micron full flow cartridge
filters, accumulators and control system. The system shall be designed for
automatic operation on pressure demand, with system pressure shall shut-off
pump and re-start pump. Pump motors shall be furnished with H-O-A switch.
No pump suction strainer will be used. The hydraulic unit shall be located
away from the other major components for easy access during maintenance.
3.9 Noise Requirements
All noise sources including gear boxes and motors shall comply with Equipment
Noise Limit Specification S20-G01. Maximum allowable noise level shall be 85 dBA,
at 1 meter unless specified otherwise. Vendor shall state compliance and include
additional sound enclosures, if required, to meet the Owner specification. Vendor
shall state noise levels for each of the motors gear boxes for the Extruder, Melt Pump
and the Pelletizer in the quotation.
3.10 Electrical Requirements
Electrical motors, panels, equipment, material and installation shall meet the
following requirements.
Motors 150 kW and less shall meet the requirements of SES E06-S01. Motors
185kW and grater shall meet the requirements of SES E06-S02. All electrical
systems, panels, material and installation shall meet the requirements of SES E19S01.
All variable frequency drives for motors 185kW and less shall meet the
requirements of SES E10-S01. All variable frequency drives for motors 200kW and
greater shall meet the requirements of SES E10-S02.
4 Controls and Instrumentation
4.1 The Vendor shall recommend, in the proposal, the instrumentation and controls necessary
to start and operate the system, to monitor the process, and to maintain a high
degree of mechanical reliability. This includes all interlock logic connecting the
various elements of the system. This recommendation shall be based on SES X01S02.
Vendor shall provide with the proposal, a preliminary P & ID and a list of the
instruments within Vendor’s scope of supply. All proposed instrumentation shall be
subject to Owner’s approval. Provisions for recording sequence of event during
failure shall be made.
4.2 Extruder process controls, interlocks, alarms shall be performed in the DCS System
supplied and programmed by Owner. The emergency shutdown requirements are to
be performed as necessary in the ESD System provided by the Owner. Vendor shall
provide control/logic narratives and logic diagrams which are suitable for direct
implementation (project specific documents not requiring interpretation) of all
interlocks, alarms, and/or control by Owner in Owner’s control equipment. Final
Extruder control/logic narratives and logic diagrams produced for the project by
Owner, which may represent additions, deletions and/or modification to Vendor’s
original document submittal package, shall be reviewed and approved by Vendor.
Vendor’s proposal shall be based on the Owner’s acceptable manufacturers list per
the Sabic approved bidder list. However, final system selection shall require Owner’s
approval to ensure the standardization of the hardware with other project
applications.
4.3 Owner’s instrument and electrical cables that run between control equipment (DCS) and
the Extruder junction box(es) shall be verified with the Owner for the particular plant
location. Vendor shall design the instrumentation to provide adequate signal levels
for this distance to the Owner’s DCS or ESD.
4.4 Vendor shall provide all necessary instrumentation that are directly associated with
Vendor supplied equipment such as local panel(s), local elements, transmitters,
position switches, etc. All instrumentation shall be wired to a respective junction box
provided by the Vendor. Junction boxes shall be located at the skid edge.
4.5 Owner will provide the speed set point signal to the motor drive. All analog signals that are
not part of an interlock system but are required at the local panel shall be routed to
the DCS and retransmitted to the local panel. All analog signals to final elements
shall be directly routed from the DCS. No output signals shall be routed through the
local panel.
4.6 The lube oil pump start/stop switches shall be locally mounted at the equipment as well as
on the local panel of the associated pump, which is to be started. Vendor shall supply
a remote/local switch at the equipment and push buttons on the local panel.
4.7 The following instrument wiring systems shall be routed in separate raceways and
isolated from each other. Separate field junction boxes shall also be provided.
4.7.1 Low Level Analog Signals for TCs
4.7.2 Low Level analog Signals for RTDs
4.7.3 24 VDC Analog input/output signals
4.7.4 24 VDC Discrete input/output signals
4.7.5 AC Power Wiring 120 VAC
4.8 Mechanical vibration must not cause switches to operate or cause instrument damage.
Mercury contact switches are prohibited.
4.9 All drawings and/or data supplied to the Vendor by the Owner shall be reviewed by the
Vendor for safety, proper operation and compatibility with equipment furnished on the
packaged unit. Any discrepancies and conflicts shall be noted by vendor in writing to
the Owner.
4.10 All instruments shall be tagged with Owner’s tag number. These tag numbers shall
also be used on all drawings and other data furnished by Vendor. Owner will provide
tag numbers during the formal review/approval cycle of all Vendor documentation.
4.11 Instrument items on drawings and bill of materials or other documentation referring to
an instrument shall be identified with the Owner’s tag number. The bill of materials
shall describe the instrument supplied by manufacturer, type and model number as a
minimum. All control valves and instrumentation shall be supplied with Data Sheets in
ISA format.
4.12 Vibration probes and proximitors mounted on the equipment as well as
monitors/readout mounted on the local panel shall be provided by Vendor. All
machinery monitoring signals shall also be made available by the Vendor through a
separate junction box, which includes Vibration Transmitors and Power Supplies for
the interface with the Owner’s Machinery Monitoring System and ESD as applicable.
4.13 4.13Transmitters shall be used for all process control and shutdown applications,
except where specifically approved otherwise by Owner. Vendor’s logic shall include
the provision for an individual hardwired ESD input for each shutdown input, which
will be used to bypass the shutdown input, for maintenance.
4.14 Method for melt temperature control and adjustments for each product grade shall be
specified by the Vendor.
(1) One set of instruments is required for each lube hydraulic supply system, if
separate systems are provided. Transmitter, alarm, and shutdown interlock are
additionally required on each individual supply line if a common system is used.
(2) Where a spare driver is to be started automatically, a contact from the
local/off/remote switch must be used as a DCS input to verify the switch has
been placed in the ‘remote’ position.
(3) Vendor shall confirm the requirement of the interlock.
5 Utility and Process Piping
5.1 All pipe, tubing, instruments and flanges for Owner connections shall be provided
with connections dimensioned in accordance with the ANSI and ASME Standards.
No metric connections are allowed. Companion flanges provided by vendor at
customer tie-in points are acceptable in lieu of the above.
5.2 All pipe and tubing in the forced lubrication system shall be stainless steel. Valves
shall be stainless steel.
5.3 The piping shall be arranged so that no liquid pockets or vapor traps are installed.
5.4 Block valves shall be provided to isolate principal skid terminations points for
inspection and maintenance. Butterfly valves shall not be used where positive shutoff
is
required.
5.5 The piping and fittings shall be located in the confines of the skid and supported in
such a way as to avoid unacceptable vibration.
5.6 Sufficient
3
/
inch vents and drains with stainless steel plugs shall be provided for
hydrostatic testing and purging prior to startup. Sufficient
4
3
/
inch or larger valved
vents and drains shall be provided to permit ease of startup and shutdown.
4
5.7 Pipe connections 2 inches and larger shall be flanged. Flanges shall be in
accordance with ASME/ANSI B16.5. Piping less than 2″ shall have welded
connections. Use of threaded connections shall not be allowed. If threaded
connections cannot be avoided, permission from the engineer shall be obtained. In
no case shall threaded connections be larger than 1½ inches. Pipe threads shall
conform to ANSI/ASME B1.20.1. Flange bolt holes shall straddle natural centerline.
5.8 All flange finishes will be special finish 3.20-6.4 micro-meter Ra. Prior to installation
of flange protectors, flange facings shall be inspected by the Vendor to insure that
gasket surfaces are free from defects.
5.9 Pipes and fittings for utility services (steam, water) shall be carbon steel. Cast iron
piping materials shall not be used.
5.10 Unless otherwise specified, minimum wall thickness shall be Schedule 80 for 2
inches nominal and smaller, Schedule 40 for 3 inches and larger. Nominal pipe sizes
of 1¼, 2½, 3½, and 5 inches shall not be used, unless required for pressure relief
valves. In this case, use of these sizes shall be minimized.
5.11 Screwed and socket weld fittings, including ells, plugs and unions shall be forged
steel with a minimum rating of 3,000 pounds.
6 Special Provisions
6.1 The Extruder will be installed in a building with roof and rollup doors or louvered
walls. Electrical enclosures for control panels, junction boxes etc. located in the
extruder building shall be minimum NEMA 4X (Stainless Steel).
6.2 Interconnecting piping between Vendor furnished package components shall be
furnished by the Owner. All interconnecting wiring/conduit etc. shall be furnished by
Owner. Vendor shall provide location of tie-in points.
6.3 Vendor shall furnish lifting lugs or eye bolts on all heavy pieces of equipment.
6.4 Foundation bolts and leveling shoes shall be furnished by the Vendor.
6.5 All motors, pumps and gear boxes shall be marked with permanently inscribed
rotational arrows.
6.6 All junction boxes shall meet requirements of electrical area classifications and be
firmly supported and readily accessible. Conduit and wiring are not to be in thermal
contact with hot equipment. Junction boxes shall be identified with tag numbers
provided by the Owner.
6.7 In all cases, contacts shall be energized for normal operation and de-energized for
alarm and shutdown conditions. Separate circuits shall be furnished for alarm and
shutdown functions.
6.8 All drains shall be accessible or piped to an accessible location, free draining, and
un-pocketed, preferably to the edge of the skid or outside of equipment.
6.9 The Owner will supply all motor starters and associated protection in Owner’s motor
control center. In addition, potential and current transformers for metering of auxiliary
and main motor kW shall be provided in Owner’s motor control center.
6.10 Material of construction for Thermowells shall be 316 SS minimum.
6.11 All exceptions to supplied Project Specifications shall be noted in quotations. No
other exceptions now or later will be considered to this requisition.
6.12 All Data Sheets shall be in metric units as defined in the inquiry documents. All
instruments shall read in metric units as defined in the inquiry.
6.13 Vendor shall supply certified utility requirements sheet showing utility levels and
demands for each equipment item; i.e., water, steam, electricity, air, etc. Design data
for all utilities are provided in the inquiry. These design values shall be used to
calculate utility requirements. This information shall be supplied by the vendor within
four (4) weeks after receipt of a purchase order.
6.14 The layout of all equipment mounted on skids, auxiliary systems and control cabinets
shall be neat, compact, well supported and braced, while providing ease of access
for normal operation and maintenance. Sufficient clearance shall be provided for the
removal and servicing of major equipment, e.g. pumps, motors, exchangers etc.,
without interference from other components such as piping, conduit, structural
bracing etc. Workmanship shall be professional, with all components suitable for the
specified industrial environment.
6.15 All piping, tubing, electrical power and signal conduit shall be supported, free from
vibration, routed away from walking or work areas, and should not present tripping or
injury hazards. All power and signal wiring shall be run in separate rigid conduit. All
dissimilar voltage wiring shall be run in separate, rigid conduit.
6.16 Vendor must provide weights of component parts to facilitate the design of cranes or
other lifting devices in the compounding building for maintenance purposes. The
weight for each component shall be indicated on the nameplate.
6.17 All instruments (i.e. pressure gages, switches and transmitters etc.) shall be provided
with block and bleed valves. All hand valves, levers, instrumentation, etc., shall be
accessible with ease for maintenance and operation and shall be operable with
normal effort. Any steps, ladders, etc., required to meet this objective shall be
incorporated in the design and shall be in accordance with OSHA standards.
6.18 All oil/hydraulic/coolant skids shall be constructed with solid, continuously welded
decking, having a perimeter drip rim to contain leaks and designed to avoid liquid
accumulation.
6.19 Vendor shall provide allowable stress, forces and moments for all Owner piping
interfaces.
6.20 All piping terminations shall be flanged and terminate at the skid edge. All
instrumentation/electrical wiring shall terminate in junction boxes.
6.21 Provision for optical alignment of the Extruder barrels, gear box and motor shall be
made by the vendor.
6.22 The guides provided for thermal expansion shall have markings to indicate normal
expansion at operating temperature.
6.23 Vendor shall provide any special data for condition monitoring such as spectrum
analysis for vibration, gear mesh frequencies etc.
7 Testing
7.1 General
7.1.1 Testing of the individual components of the system (e.g. motor drivers, gears,
lube oil system, pumps etc.) shall meet the requirements outlined in
applicable Project Specifications and Data Sheets. The Owner reserves the
right to make shop inspection or witness major tests.
7.1.2 The complete unit shall be tested in the field for a 72 hour Warranty Run Test
after the unit is operational. The timing for this test shall be mutually agreed
upon by the Owner and Vendor at a later date.
7.1.3 Screws for each Extruder shall be given a slow run test in the Vendor’s shop
assembled with the barrel housings.
7.1.4 Test coupons for gear teeth hardness shall be provided.
7.2 Vendor shall specify the maximum load under which the gear box will be tested. The
mechanical running tests of the gears shall include but not be limited to the following
sequence. Each Extruder gear box shall be tested at the Vendor’s test facility.
7.2.1 Operate at maximum continuous speed until bearings and lube oil
temperatures have stabilized.
7.2.2 Increase the speed to 110 percent of maximum continuous speed and run for
a minimum of 15 minutes.
7.2.3 Reduce speed to maximum continuous speed and run for four (4) hours.
7.3 The following basic requirements shall be met for the running test.
7.3.1 Contract bearings shall be used in the gear unit for the mechanical running
test. Lube oil flow, pressure, temperature and viscosity shall be in
accordance with the job specifications (determination of flow does not
necessarily require the use of flow meters).
7.3.2 Gear casings and oil system shall be checked for joint and connection
tightness. Any leaks shall be corrected.
7.3.3 All warning, protective and control devices calibration shall be checked and
adjustments made as required. This shall include a full functional check of all
controls in accordance with control logic narratives and logic diagrams. This
shall include a test of local panel and all customer interface connections.
7.3.4 A visual check of all instrumentation shall be performed to verify proper
material supply, installation techniques, tagging and maintenance
accessibility.
7.3.5 Gear tooth contact shall be verified. Noise level measurements are required.
7.4 During the running test, the mechanical operation of all equipment shall be
satisfactory.
7.5 After completion of the mechanical running test, the gear unit shall be opened for a
visual inspection. Tooth mesh shall be inspected for surface condition and proper
tooth contact. All bearings and journals shall be inspected. If test and visual results
are satisfactory, the unit shall be reassembled and prepared for shipment.
7.6 If improvements are required as concluded by test results or visual inspection, the
initial test will not be acceptable and the final shop tests shall be run after
replacements or corrections are made.
7.7 When spare gear elements are ordered to permit concurrent manufacture, they shall
also be given a mechanical run test in accordance with the requirements of this
specification.
7.8 The Vendor shall keep a detailed log of the final test, making entries every 15
minutes of the first hour and at 30 minute intervals for the duration of the test,
including the following:
7.8.1 Inlet oil temperature and pressure
7.8.2 Oil flow
7.8.3 Outlet oil (drain) temperature
7.8.4 Shaft vibration frequency and amplitude, filtered and unfiltered.
7.8.5 Bearing temperatures
7.9 All equipment furnished by Vendor is subject to inspection.
8 Documentation
8.1 Vendor shall furnish drawings, manuals, calculations, assembly and erection
instructions, inspection and testing reports and all other documents listed herein and
on the Supplier Drawing & Data Commitment form. All data submitted shall be in the
English language.
8.2 All documents and drawings shall be in reproducible form, and the quality shall be
such as to allow reproduction and/or reduction by microfilming without loss of clarity.
8.3 The Vendor shall furnish the following drawings and data as part of purchase order
documentation:
8.3.1 Complete general assembly drawings including plans, elevations, sections,
details with part numbers and materials specification, bills of material, etc.
illustrating equipment arrangement and configuration. The drawings shall
also include field connections, flange sizes and ratings, bolt sizes, electrical
conduit sizes, etc. General assembly drawings shall also illustrate individual
component weight. All dimensions (except pipe diameter) are to be in metric.
8.3.2 A P&ID/schematic drawing of the complete Extrusion System including
auxiliary systems with clearly marked Vendor/Owner boundaries for scope of
supply.
8.3.3 Individual component assembly drawings with plans, elevations, sections,
bills of material, and utility requirements.
8.3.4 Assembly weights, component weight, center of gravity and support
requirements.
8.3.5 Assembly bolt list (including any special bolts required) complete with sizes.
8.3.6 Foundation & dynamic loading and / or any special requirement related to
vibration.
8.3.7 Any special grouting requirements.
8.3.8 Electrical power requirements.
8.3.9 Machinery component torque requirements.
8.3.10 Completed Owner Data Sheets and Forms.
8.3.11 Completed Owner’s Instrument Data Sheets per ISA and Instrument List in
both electronic and hardcopy media. Vendor shall be provided an empty
Microsoft (MS) Access data base that includes tables to be filled in by
Vendor with specific instrument data report forms which define the
generation form of the required hardcopy Data Sheets and reports.
8.3.12 Local Panel and associated power, grounding, signal wiring diagrams etc.
shall be provided.
8.3.13 Electrical elementary drawings, schematic diagrams and logic diagrams shall
be provided.
8.3.14 Lubrication and maintenance schedules.
8.3.15 Compressed air and other utility requirements.
8.3.16 Noise data sheets for gear boxes and motor drivers.
8.3.17 Certified mill test and material reports when specified.
8.3.18 Welding procedures and welder qualifications for pressure vessels and
piping.
8.3.19 Test reports for equipment, motors, etc.
8.3.20 All data, drawings, calculations, reports, etc., as required in referenced
specifications, codes, forms, standards, drawings and data sheets.
8.3.21 Logic narratives defining all shutdown, permissive and operational interlocks
shall be provided. Narratives shall include a listing of all associated
transmitter ranges, alarm set points, trip set points, etc.
8.3.22 Detailed Boolean logic diagrams which permit direct implementation of
interlocks in Owner’s control system shall be provided.
8.3.23 Complete and detailed Operation, Maintenance and Installation Manuals with
the following information shall be reviewed no later than ten weeks prior to
equipment and component shipment. The final content of the manuals shall
be agreed upon, and the required number of manual copies then
prepared/reproduced at no charge to the Owner. The completed manuals
shall be transmitted no later than the equipment delivery date. All manuals
and documentation shall be in the English language.
The manuals shall include all data listed in Section 3.0 and also include but
not be limited to the following:
a. Instruction for preparing the equipment for use.
b. Instructions for start-up, normal shutdown, emergency shutdown,
and routine operational procedure. Routine and major overhauling
instruction procedures shall also be included.
c. A description of equipment construction features and the functioning
of component parts or systems.
d. Outline and sectional drawings (in non-reduced format), schematics,
and illustrative sketches in sufficient detail to identify all parts and
clearly show the operation of all equipment and components and the
methods of inspection and repair. Standardized sectional drawings
are acceptable only if they represent the actual construction of the
equipment.
e. Design data and specification sheets.
f. Instructions for measuring and adjusting belts and drives.
g. Lubrication procedures and recommended frequency.
h. Balancing tolerances.
i. Alignment tolerances and procedures.
j. Re-assembly sequences together with required inspection checks.
k. Detailed procedures for pre-operational checks, including settings
and adjustment.
l. Equipment list with description of all equipment including tag
numbers, service and manufacture.
m. Design Basis and performance curves with range of operation and
limitations.
n. Instrument wiring, tubing and interconnection diagrams.
o. Shipping and site preservation instructions and recommendations.
p. Installation instructions and recommended practices.
9 Painting
q. Pre-commissioning and commissioning instructions.
r. Maintenance and trouble shooting instructions.
s. Special tools list for installation, operation and maintenance including
drawings for the special tools.
t. Shop test results.
u. Complete parts lists and Vendor recommended Spare Parts list.
Vendor shall complete and submit the attached Spare Parts
Interchangeability Record (SPIR) form.
v. Supplier’s certificate of compliance after correcting inspection items
and completion of all tests; a list of any items to be corrected or
completed at the jobsite must be attached as “exceptions” to the
completion certificate.
w. All data to be included in the manuals shall reflect the as-built
conditions at time of delivery.
Vendor shall submit with the proposal vendor standard paint specifications for the proposed
application. The specification will be deemed acceptable subject to the Owner’s review and
approval prior to purchase.
10 Spare Parts
Vendor shall furnish a recommended priced spare parts list for various categories of the
spare parts (e.g. construction/commissioning, warehouse and major spares). As a minimum,
the following items shall be quoted for each model type of the Extruder.
10.1 Extruder
10.1.1 Two (2) shafts and/or Element Set
10.1.2 Shaft Seals
10.1.3 Bearing Set
10.2 Main Drive Motor
10.2.1 Bearing Set
10.2.2 Coupling to Gear Box
10.3 Main Drive Gear Box
10.3.1 Gear Set
10.3.2 Bearing Set including Thrust Bearing
10.3.3 Coupling to Extruder
10.4 Melt Pump
10.4.1 Rotor or Rotor Elements
10.4.2 Bearing Set including Journal Bearing and Seals
10.4.3 Coupling to Gear Box
10.4.4 Transition Piece plus Complete Assembly to Replace Melt Pump (if required)
10.5 Melt Pump Motor
10.5.1 Bearing Set
10.5.2 Coupling to Gear Box
10.6 Melt Pump Gear Box
10.6.1 Timing Gears
10.6.2 Bearing Set including Thrust Bearing
10.6.3 Complete Gear Set
10.7 Screen Changer Screen Pack Holder with Screens
10.8 Die Plate Assembly
10.8.1 Die Plate
10.9 Pelletizer
10.9.1 Knife Hub
10.9.2 Complete Knife Set
10.9.3 Bearing Set
10.9.4 Rotor Assembly
10.9.5 Coupling
10.10 Pelletizer Drive
10.10.1 Bearing Set
10.10.2 Coupling
10.11 Spare circuit boards for variable frequency drive controllers for Melt Pump and
Pelletizer Drives.
11 Preparation for Shipment
11.1 Equipment shall be prepared for ocean shipment by the Vendor. Vendor shall submit
with the proposal vendor standard specification for export packaging for Owner’s
review and approval.
11.2 Each Extruder assembly shall be ready for shipment in as complete condition as
possible after shop tests have been conducted. Dismantling prior to shipment shall
be minimized. The intent is to ship each unit with all auxiliaries mounted and ready
for Owner connection with minimal field assembly required.
11.3 Prior to shipment, all equipment openings shall be fitted with gasketed metal covers
and sealed with waterproof tape.
11.4 Vendor’s “General Specifications for Shipment Preparation” shall be included in the
proposal. Equipment shall be shipped suitable for six months outdoor storage in a
coastal desert environment.
11.5 Vendor shall provide, prior to equipment shipment, a bill of material to identify all
equipment components and loose pieces.
11.6 All piping flanges shall be match-marked and tagged to facilitate assembly in the
field.
11.7 All flange faces on piping and hoses shall be protected with metal covers and
waterproof tape.