A06 Specifications.doc

Fiberglass Water Storage Tank 2021 A. Summary

The Bureau of Land Management (BLM) is requesting one 10,000 plus gallon horizontal fiberglass water storage tank. The tank will be used for non-potable water storage to water livestock. It is the contractors’ responsibility to provide, transport, and off load the tank at the BLM Miles City Field Office at 111 Garryowen Road, Miles City, Montana 59301.

A. General

A. Quality Assurance A. Governing Standards, as applicable:

A. Tank manufacturer shall be in the business of manufacturing tanks to applicable standards.

A. Tank shall be manufactured to meet or exceed ASTM D3299, ASTM D4097, and AWWA D120.

A. Submittals A. Product Data: Include rated capacities, accessories, appurtenances, and furnished specialties for each surface water-storage tank indicated.

A. Shop Drawings: Signed and sealed by a qualified professional engineer. Show fabrication and installation details for each water-storage tank, including the following:

A. Tank and shell openings.

A. Man-way extensions and hatches.

A. Plans, elevations, sections, details, and attachments to other work.

A. Certification of Occupationl Safety and Health Administration conformance. (Manways, etc) A. Anchor details and material list for temporary wareyard storage.

B. Written approval of BLM Water Storage tank installation to be partially buried. See attached drawing for proposed BLM installation and conditions.

C. Warranty

A. Products

A. Single-Wall Fiberglass Reinforced Plastic (FRP) Storage Tanks

A. Loading Conditions – Tank shall meet the following design criteria:

A. Internal Load – Tank shall withstand a 5-psig air-pressure test with 5:1 safety factor.

A. Tank shall support accessory equipment – such as internal pump platforms, drop/fill tubes, submersible pumps and ladders – when installed according to tank manufacturers current Installation Manual and Operating Guidelines.

A. Tank shall have a structural wall thickness of a minimum 0.375” or thicker if load calculations require.

B. Product Storage

B. Tank shall be capable of storing a minimum of 10,000 galllons of water products with specific gravity up to 1.1.

B. Tank shall be vented to atmospheric pressure.

B. Tank shall be capable of storing products identified in the manufacturer’s current standard limited warranty.

C. Materials

C. Tank shall be manufactured with 100% resin and glass-fiber reinforcement with no sand fillers.

D. Tank Dimensions

D. Tank shall have a capacity of 10,000 plus gallons, or Government Contracting Officer(CO) approved.

D. Tank shall have nominal outside diameter of 10 feet.

D. Tank shall have approximate overall length of 22 feet.

A. Accessories A. Manways A. Each tank shall have a manway, it shall be flanged and 30"-nominal diameter, complete with gasket, bolting hardware and FRP cover.

A. Actual location shall be shown on tank shop drawings, and approved by CO.

A. Each manway shall have an extension constructed of FRP. Length will be approved on shop drawing. The extension shall be designed to withstand all expected loads.

A. All tanks for stock water use require at least one manway, and extension.

A. Approved shop drawings shall show exact location of the manway.

B. Fittings B. Each tank shall have one air vent fitting at the top of the radius of the tank. These fittings shall be flat-faced and flanged, and shall conform to ANSI B16.5 150 # bolting pattern.

B. Each tank shall have (2) FRP bottom dome nozzles they shall be flat-faced and flanged, and shall conform to ANSI B16.5 150 # bolting pattern.

B. Each tank shall have a FRP top dome nozzle they shall be flat-faced and flanged, and shall conform to ANSI B16.5 150 # bolting pattern.

B. All FRP and PVC nozzles shall be flat-faced and flanged, and shall conform to ANSI B16.5 150# bolting pattern.

C. Access Openings (not for use with potable water tanks)

C. FRP access openings shall be 30” in diameter

C. PVC Risers and FRP lids shall be provided by the tank manufacture for field installation on access openings.

C. Lockable manway.

D. Storage saddles

D. Saddles will be provided to the BLM for short term storage of the tanks in the BLM wareyard.

E. External Ladder E. No external ladder shall be required.

A. Delivery Location

A. BLM Field Office 111 Garryowen Road Miles City MT. 59301

A. Warranty A. Warranty A. Warranty shall be manufacturer’s warranty for underground water and potable water tanks in effect at time of delivery and extend 1 year as a minimum.