DWA Turbine Guide Bearing Pumps and HX PWSjpk.docx

BID ITEM LIST

DWORSHAK TURBINE GUIDE BEARING PUMPS AND HEAT EXCHANGERS

Total

TECHNICAL SPECIFICATIONS

DWORSHAK TURBINE GUIDE BEARING PUMPS AND HEAT EXCHANGERS

SCOPE

The following specification pertains to the supply of three (3) heat exchangers for main units 1 and 2, two (2) heat exchangers for main unit 3, five (5) pumps for units 1 and 2, and three (3) pumps for main unit 3. The contractor must deliver all components listed above to Dworshak Dam and Reservoir (Dworshak Project), Ahsahka, Idaho.

2.0 HEAT EXCHANGER AND PUMPS – GENERAL REQUIREMENTS

· The pump and heat exchanger assemblies must be equipped with the salient requirements listed herein. Any items not identified in this specification that are required for operation of all attachments must be provided by the Contractor as part of their bid.

· The pump and heat exchanger assemblies must be fully capable, equipped as described in the salient requirements below, and ready for all intended uses upon delivery and assembly.

· The pump and heat exchanger assemblies must not be modified to meet the functional and performance requirements of this specification, other than the addition of optional items. If any modifications are required to the structures as shown to meet the functional purposes of this contract, the contractor is to immediately notify the Contracting Officer (KO).

· The pump and heat exchanger assemblies must be constructed of all new materials exhibiting no excessive corrosion. No used or returned components will be accepted as a part of this fabrication.

· All pumps provided under this contract must be of the same make.

· All heat exchangers provided under this contract must be of the same make.

· All submittals designated for government approval will be designated as approved or disapproved. The contractor must not proceed with the scope of work the submittal pertains to until receiving a fully approved submittal. Submittals must be submitted a minimum of 15 days in advance of procurement to allow time for government review.

3.0 UNIT 1&2 DOUBLE WALL PLATE AND FRAME HEAT EXCHANGERs (CLIN 01)

The critical defining elements for the heat exchanger assemblies include:

3.1 Heat Exchanger Performance and Materials Requirements

· The heat exchangers must be constructed of 316 Stainless steel and brazed together using a copper alloy material.

· The heat exchanger must be a double walled, plate and frame style, that is designed with a visual leak detection device of the interstitial space.

· All connections must be 2” NPT

· The heat exchangers must be equipped with mounting studs that allow fixation to vertical plate steel with a thickness of ¾”.

· The heat exchanger must have a minimum design pressure of 435 PSIG.

· Cooling water operating conditions are as follows:

· Maximum cooling water inlet temperature is 50°F with a flow rate of 16 GPM.

· Oil operating conditions are as follows:

· Maximum oil inlet temperature is 100°F with maximum flow rate of 9 GPM. The oil must be cooled to a temperature of 75°F.

· The oil side must be able to support 18 GPM flow rates (Cooling requirements not necessary in this design state)

· Oil type is Mobile DTE Heavy Medium ISO Grade 68

· The heat exchanges must exhibit of maximum of 10 PSI pressure drop on both the hot and cold sides.

· The total heat transfer rate of the heat exchanger must be a minimum of 45,000 Btu/hr.

· The heat exchanger must have the following maximum dimensions (HxWxD): 25” x 8” x 6”

4.0 UNIT 3 DOUBLE WALL PLATE AND FRAME HEAT EXCHANGERs (CLIN 02)

The critical defining elements for the heat exchanger assemblies include:

4.1 Heat Exchanger Performance and Materials Requirements

· The heat exchangers must be constructed of 316 Stainless steel and brazed together using a copper alloy material.

· The heat exchanger must be double walled, plate and frame style, that is designed with a visual leak detection device.

· All connections must be 2” NPT

· The heat exchangers must be equipped with mounting studs that allow fixation to vertical plate steel with a thickness of ¾”.

· The heat exchanger must have a minimum design pressure of 435 PSIG.

· Cooling water operating conditions are as follows:

· Maximum cooling water inlet temperature is 50°F with a minimum flow rate of 50GPM.

· Oil operating conditions are as follows:

· Maximum oil inlet temperature is 100°F with maximum flow rate of 25 GPM The oil must be cooled to a temperature of 75°F.

· The oil side must be able to support 50 GPM flow rates (Cooling requirements not necessary in this design state)

· Oil type is Mobile DTE Heavy Medium ISO Grade 68

· The heat exchanges must exhibit of maximum of 10 PSI pressure drop on both the hot and cold sides.

· The total heat transfer rate of the heat exchanger must be a minimum of 110,000 Btu/hr.

· The heat exchanger must have the following maximum dimensions (HxWxD): 25” x 8” x 10”

5.0 UNIT 1&2 THREE SCREW POSITIVE DISPLACEMENT ROTARY PUMP (AC) (CLIN 03)

The critical defining elements for the pump assemblies include:

5.1 Three Screw Positive Displacement Pump Performance and Materials Requirements

· The pumps must pump 9 gallons per minute at 75 PSI with 95°F, Mobile DTE Heavy Medium ISO Grade 68

· The pumps must be equipped with mechanical seals capable of sustainable operation at the RPM noted below, along with the type of fluid, pressure and temperature noted above.

· The power rotor must be constructed of allow steel and the idle rotors constructed of pearlitic gray iron.

· All bearings must be ball bearings that are permanently greased.

· The pump casing must be constructed of cast iron.

· The pumps must be three screw positive displacement rotary type pumps with a 1.5” NPT inlet and a 1” NPT Outlet.

· The pumps must be C-Faced, equipped with an adaptor for connection to the motor shown in Figure 1 below. The adaptor should require no fabrication and should allow a bolt on assembly from the motor to the pump. The contractors must supply two (2) adaptors for this motor/pump combo.

· The contract must supply a jaw style coupling, rated for the capacity of the motor, to couple the motor to the pump. The contractor must deliver the jaw style coupling in a manner that allows immediate coupling of the motor to the pump with no fabrication or material removal processes necessary.

· Coupling and rotating components must be shielding with an OSHA approved guard.

Figure 1: Unit 1&2 AC Motor

6.0 UNIT 1&2 THREE SCREW POSITIVE DISPLACEMENT ROTARY PUMP (DC) (CLIN 04)

The critical defining elements for the pump assemblies include:

6.1 Three Screw Positive Displacement Pump Performance and Materials Requirements

· The pumps must pump 9 gallons per minute at 75 PSI with 95°F, Mobile DTE Heavy Medium ISO Grade 68

· The pumps must be equipped with mechanical seals capable of sustainable operation at the RPM noted below, along with the type of fluid, pressure and temperature noted above.

· The power rotor must be constructed of allow steel and the idle rotors constructed of pearlitic gray iron.

· All bearings must be ball bearings that are permanently greased.

· The pump casing must be constructed of cast iron.

· The pumps must be three screw positive displacement rotary type pumps with a 1.5” NPT inlet and a 1” NPT Outlet.

· The pumps must be C-Faced, equipped with an adaptor for connection to the motor shown in Figure 2 below. The adaptor should require no fabrication and should allow a bolt on assembly from the motor to the pump. The contractors must supply two (2) adaptors for this motor/pump combo.

· The contract must supply a jaw style coupling, rated for the capacity of the motor, to couple the motor to the pump. The contractor must deliver the jaw style coupling in a manner that allows immediate coupling of the motor to the pump with no fabrication or material removal processes necessary.

· Coupling and rotating components must be shielding with an OSHA approved guard.

Figure 2: Unit 1&2 DC Motor

7.0 UNIT 3 THREE SCREW POSITIVE DISPLACEMENT ROTARY PUMP (AC) (CLIN 05)

The critical defining elements for the pump assemblies include:

7.1 Three Screw Positive Displacement Pump Performance and Materials Requirements

· The pumps must pump 24 gallons per minute at 75 PSI with 95°F, Mobile DTE Heavy Medium ISO Grade 68

· The pumps must be equipped with mechanical seals capable of sustainable operation at the RPM noted below, along with the type of fluid, pressure and temperature noted above.

· The power rotor must be constructed of allow steel and the idle rotors constructed of pearlitic gray iron.

· All bearings must be ball bearings that are permanently greased.

· The pump casing must be constructed of cast iron.

· The pumps must be three screw positive displacement rotary type pumps with a 2” NPT inlet and a 1.5” NPT Outlet.

· The pumps must be C-Faced, equipped with an adaptor for connection to the motor shown in Figure 3 below. The adaptor should require no fabrication and should allow a bolt on assembly from the motor to the pump. The contractors must supply one (1) adaptor for this motor/pump combo.

· The contract must supply a jaw style coupling, rated for the capacity of the motor, to couple the motor to the pump. The contractor must deliver the jaw style coupling in a manner that allows immediate coupling of the motor to the pump with no fabrication or material removal processes necessary.

Figure 3: Unit 3 AC Motor

8.0 UNIT 3 THREE SCREW POSITIVE DISPLACEMENT ROTARY PUMP (DC) (CLIN 06)

The critical defining elements for the pump assemblies include:

8.1 Three Screw Positive Displacement Pump Performance and Materials Requirements

· The pumps must pump 24 gallons per minute at 75 PSI with 95°F, Mobile DTE Heavy Medium ISO Grade 68

· The pumps must be equipped with mechanical seals capable of sustainable operation at the RPM noted below, along with the type of fluid, pressure and temperature noted above.

· The power rotor must be constructed of allow steel and the idle rotors constructed of pearlitic gray iron.

· All bearings must be ball bearings that are permanently greased.

· The pump casing must be constructed of cast iron.

· The pumps must be three screw positive displacement rotary type pumps with a 2” NPT inlet and a 1.5” NPT Outlet.

· The pumps must be C-Faced, equipped with an adaptor for connection to the motor shown in Figure 4 below. The adaptor should require no fabrication and should allow a bolt on assembly from the motor to the pump. The contractors must supply one (1) adaptor for this motor/pump combo.

· The contract must supply a jaw style coupling, rated for the capacity of the motor, to couple the motor to the pump. The contractor must deliver the jaw style coupling in a manner that allows immediate coupling of the motor to the pump with no fabrication or material removal processes necessary.

Figure 4: Unit 3 DC Motor

9.0 Warranty

· All components supplied under this contract must be covered by a minimum one-year warranty on all parts, labor, and workmanship from factory defects. All warranty work will be done without delivery or shipment fees (including travel or on-site work). All parts and components covered by a manufacturer’s warranty greater than one (1) year must prevail.

10.0 SUBMITTALS

10.1 Pre-Award Submittals

The offeror must submit the following items for government approval in the timeframes listed below after the award of contract:

· 10.1.1 Shop Drawings

· The contractor must provide drawings of the heat exchangers, pumps, and adaptors. The drawings must include all pertinent dimensions that clearly demonstrate the products size and fitment.

· 10.1.2 Catalog Cut Sheets and Performance Information

· The contractor must provide cut sheets and performance information clearly demonstrating compliance with the above stated qualifications for acceptance in sections 3.0 through section 8.0. Failure to demonstrate all above listed items will result in the bid not being considered technically acceptable.

11.0 SHIPMENT, DELIVERY

All items must be delivered FOB to Dworshak Project on or before September 15th, 2024. The Contractor must be responsible for packing and shipping the components in a manner that will ensure undamaged and complete arrival to Dworshak Project. Deliveries must only be conducted during normal Dworshak Project business hours, Monday–Thursday 7:30 a.m. – 4:30 p.m., excluding federal holidays. Notify the Government of delivery seven (7) days prior to shipment by providing the date & estimated time of arrival.

All shipments must be delivered to:

USACE Dworshak Project Attn: Contract Performance Specialist 1428 Northfork Drive Ahsahka, ID 83520 image3.jpeg image4.jpeg image1.jpeg image2.jpeg