SOW_for_SOL_Attachment.pdf

NDBC STANDARD SPECIFICATION FOR FABRICATION OF BUOY HULL

USED IN THE TROPICAL ATMOSPHERE OCEAN (TAO) ARRAY

1.0 SCOPE

1.1 General. This specification describes the requirements for the fabrication of the buoy hull used in the Tropical Atmosphere Ocean (TAO) array. The contractor shall provide all the necessary labor, material, equipment, facilities and services to fabricate and deliver the buoy hulls to the National Data Buoy Center (NDBC).

1.2 Precedence. Any ambiguity or conflict between this specification and other applicable documents shall be resolved by the following order of precedence:

a) The issued contract with any amendments or modifications

b) This specification

c) The drawings listed in paragraph 2.4

d) Other applicable documents listed in paragraph 2.0

2.0 APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are referenced in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification, which are recommended for additional information or used as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements cited in sections 3 and 4 of this specification, whether or not the referenced documents are listed here.

2.2 Government Documents. The following documents form a part of this specification to the extent referenced herein. Suffixes denoting the specific issue of each document are omitted from future references to the documents in this specification.

STANDARD DATE TITLE

MIL-P-21929B 15 Jan 1991 Plastic Material, Cellular, Polyurethane, Rigid, Foam-in-Place, Low Density (2 pounds per cubic foot)

FED-STD-595B 7 Jan 1994 Federal Standard Colors

2.3 Industry Publications. The following documents of the issues specified form a part of this specification to the extent referenced herein. Suffixes denoting the specific issue of each document will be omitted from future references to the document in this specification.

STANDARD DATE TITLE

ASTM A666-03

AWS D1.6/D1.6M

Oct 2003

Feb. 2021

Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar

Structural Welding Code – Stainless Steel

2.4 Drawings. The following NDBC drawings form a part of this specification to the extent referenced herein and shall be referred to as "the drawings" throughout this specification:

Drawing Rev Title

TAO-001102 F TAO Buoy Hull Assembly

3.0 REQUIREMENTS

3.1 General. The buoy’s hull shall be fiberglass over foam with ASTM A666 Type 316 stainless steel framework. All stainless steel welding shall be in accordance with AWS Dl.6. The floatation foam injected into the hull shall meet the requirement of MIL-P-21929B. The contractor shall have a procedure for injection and curing of the floatation foam that is in accordance with MIL-P-21929B and manufacturer's instructions.

4.0 QUALITY ASSURANCE

4.1 Welding Procedures and Qualifications. The contractor shall submit welding procedures and welder qualifications that conform with AWS D1.6 prior to fabrication of the hull’s stainless steel framework.

4.2 Flotation Foam Filling Procedure. The contractor shall submit the selected floatation foam that meets MIL-P-21929B and the procedure for filling the hull prior to beginning the hull fabrication.

4.2 Material Certifications. The contractor shall provide vendor supplied material certifications for all materials used in the construction of the buoy framework.

4.3 First Article. The contractor shall produce and deliver a first article of the buoy hull for inspection prior to commencing fabrication of the remainder of the articles. This requirement may be waived at the contracting officer’s discretion if the contractor has successfully completed a TAO buoy hull contract in the past.

5.0 DELIVERABLES

All deliverables shall be shipped to the following address:

National Data Buoy Center

Attn: Property Officer

Building 3203

Stennis Space Center, MS 39529