SoW_Revisions.docx

Specifications for Purchase of Replacement Tube Bundles for Heat Exchangers in the AML

Background The National Institute of Standards and Technology (NIST) needs to purchase spare tube bundles for the heat exchangers in the AML Complex. Some of the existing tube bundles are near the end of their service life.

Objectives The objective of this requirement is to purchase fifteen (15) new tube bundles as described in the Specifications section.

Specifications

This is a brand name or equal requirement.

All items must be new. Prototypes, demonstration models, used or refurbished equipment will not be considered for award.

The supplier shall furnish the government with 15 replacement tube bundles which match the specifications listed in the minimum requirements below. The Supplier will provide with each replacement tube bundle a gasket set and new nuts and bolts.

Tubes: Copper, 20 mm OD minimum.

Fouling factor: 0.001 on water and steam sides.

Pressure loss in header coils: As indicated.

Maximum tube velocity: 2.30 m/s.

Design Std’s: ASME code construction. TEMA Guidelines All bundles will have a U1Certificate.

Supply 1 each Tube Bundle same as or equal to TACO Exchanger Model Number G18408TS, Serial# 197926, Designated as 103

Supply 2 each Tube Bundles, same or equal to TACO Exchanger Model# G12408TS, Serial # B6241, Designated as 104

Supply 1 each Tube Bundle, same as or equal to TACO Exchanger Model Number 22000-S-88, Serial# B16072, Designated as 203

Supply 2 each Tube Bundles, same or equal to TACO Exchanger Model# G18408TS, Serial # B6232, Designated as 204

Supply 2 each Tube Bundle same as or equal to TACO Exchanger Model Number G18408TS, Serial# B16074, Designated as 304

Supply 1 each Tube Bundle same or equal to TACO Exchanger Model# 2400 S105 2408, Serial # B6241, Designated as 303

Supply 1 each Tube Bundle same as or equal to TACO Exchanger Model Number G20408TS, Serial# B16076, Designated as 403

Supply 2 each Tube Bundle same or equal to TACO Exchanger Model# G16408TS, Serial # BB6238, Designated as 404

Supply 3 each Tube Bundle same or equal to EXCHANGER, HT DW B&G RTBA #QDTC-436-2 4 X 36 No Designation

Packaging All bundles will be labeled as in the specifications.

Delivery FOB Destination delivery terms are required. The Supplier shall deliver to NIST, 100 Bureau Dr. Building 301 Room A132, Shipping and Receiving, Gaithersburg, MD 20899-1640.

Inspection and Acceptance Criteria Testing and acceptance will occur within 14 days of delivery. The Government will inspect the tube bundles upon arrival and notify the supplier if there any discrepancies in the shipment. Any bundles deemed not acceptable shall be replaced at cost to the supplier.

Security If the supplier or private courier is delivering directly to NIST, they shall access the site through gate “C” on Quince Orchard Boulevard then to building 301 Truck Inspection Station.

Period of Performance The period of performance for the bundles is 45 days from date of award.

Warranty The contractor shall provide a 1 year warranty for the items delivered.