Draft AFT Tent SOW.pdf

SPECIFICATIONS

Specifications Propulsor Aft Covered Tent Procurement

1 Scope. This specification covers the procurement, installation, and performance requirements for tent structures that will provide covered storage for the protection of Navy Propulsor Aft Duct assemblies.

1.1 Background. Navy propulsion assets have been historically difficult to transport and store because of their unique size and weight requirements. Indoor warehouse space would be ideal for storing such assets, however, due to size constraints of the Material Handling Equipment (MHE) required to move these assets;

they must be stored outside under covered tent structures. These tent structures are to provide protection from harsh weather conditions that would degrade the packaging and overall condition of the assets.

Overall, this protection in storage is to ensure Navy propulsion equipment remains in Ready-for-Issue (RFI) status in the event that an item is required during a ship overhaul or maintenance situation.

2 Applicable Documents.

2.1 Department of Defense specifications.

MIL-DTL-2845E Detail Specification PROPULSION SYSTEMS, BOAT AND SHIP; MAIN SHAFTING, PROPELLERS, BEARINGS, GAUGES, SPECIAL TOOLS, AND ASSOCIATED REPAIR PARTS;

PRESERVATION, PACKAGING, PACKING AND STORAGE OF

3 Requirements.

3.1 General. The contractor will deliver and install nine (9) tent structures that will be used to house Propulsor

Aft assets located at Barstow, CA and Cheatham Annex, VA.

3.1.1 Weather Performance. The tents must have the capability to withstand inclement weather conditions that are possible at the installation location(s). The tents will need to withstand up to 100 mile per hour winds for a duration of three (3) seconds from any direction without sustaining damage to the frames or cover.

Tents will be securely anchored to the ground using a ratchet strap system that eliminates tent shifting and the possibility of the straps coming loose.

3.1.2 Durability. The tents will have a life cycle of 10 years before requiring refurbishment or cover replacement. Any structural components, framing, and hardware will resist corrosion and require minimum maintenance. Tents components must be capable of withstanding the identified weather performance requirements in section 3.1.1. Additionally, the tent cover must have the ability to be patched in the event of premature tears or wearing.

3.1.3 Tent Types.

3.1.3.1 Propulsor Aft Ducts. These assets are large, cylindrical shaped masses of metal with a cone like structure.

They have an outside diameter of roughly 20’ and a height of roughly 13’. In order to cover these assets, a square or rectangular shaped tent structure will be necessary. The frame structure will be designed such that water and sand will not collect or pool anywhere on the exterior.

3.1.3.2 Sizing. The tent shall consist of a single size with the following requirements. The outside tent dimensions will be 28’ long x 28’ wide x 17’ center height with a minimum 7’ sidewall height. Frame is to be constructed using galvanized tubular steel for sidewall and truss design.

3.1.4 Cover Material. The tent cover material will be a heavy-duty white translucent; minimum 18 ounce per square yard PVC coated polyester fabric that is flame retardant. The cover material must resist dry rot, fungus, and mildew encountered in wet and humid climates. The cover will be tensioned tightly around the tent frame structure by use of metal eyelet grommets and rope such that it will withstand the weather performance requirements as specified in 3.1.1.

3.1.5 Tent Entrance. There will be two (2) aluminum personnel doors, one per each end of the tent, equipped with windows and push panic hardware. Personnel doors must be at least 5’ high and easy to open while maintaining robust environmental protection. All closing mechanisms must last a minimum of 10 years before requiring replacement or maintenance.

3.1.6 Lifting Capability. Lifting of the tent must require only a single crane. Sufficient lift points and eyebolts must be included in the design and no specialized tools will be required for lifting and placement of the tent. Any special lifting instructions or tent instruction manuals must be stored within the tent inside a waterproof pouch.

3.1.6.1 Additional Crane Lift Package. Shelters will be built with a crane-lifting package for ease of movement by the end user; allowing the shelters to be crane lifted. Specific sling points and lifting eyebolts will be included as part of the tent design to facilitate the lifting process. These features can be included as a separate addendum package to the basic tent design.

3.1.7 Hardware. Tighten all hardware in place using some form of locking mechanism. This locking mechanism can be in the form of lock washers, nylon-insert lock nuts, or some form of non-permanent thread lock material. This locking hardware must deter bolts from loosening on their own and prevent tent frame members from coming apart.

3.1.8 Anchoring. Directly anchor the tent to the asset using the ratchet strap system provided by the contractor.

This ratchet strap anchoring system should take a single employee no more than 30 minutes to install and uninstall. No specialized tools should be necessary to perform installation and uninstallation actions. A minimum of three (3) ratchet straps per tent must be used to ensure adequate protection from high winds.

All tent-anchoring instructions will be stored within the tent inside a waterproof pouch.

3.1.9 Tent Marking. There must be a waterproof pouch or Velcro patch installed on the outside of the tent cover to be used for placing an identification label or placard. If using a Velcro patch, it must have minimum dimensions of 8” x 4”.

3.2 Detail Tasks. Tasks requiring additional consideration on the part of the contractor.

3.2.1 Tent Installation. The contractor is required to setup and install each tent at the time of delivery at the designated delivery address. The contractor must coordinate tent installation details with NAVSEA and NAVSUP WSS representatives as well as the appropriate points of contact that are listed on the contract.

Time of tent delivery and installation will be completed at a maximum of 90 days following contract award.