Attachment II - Propeller Tent SOW.pdf

SPECIFICATIONS

Specifications Propeller 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 propeller assets.

1.1 Background. Navy propeller 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 propellers; 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 propeller asset. Overall, this protection in storage is to ensure assets remain in Ready-for-Issue (RFI) status in the event that a marine propeller 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 four (4) tent structures that will be used to house propeller assets located at Barstow, CA.

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 Type.

3.1.3.1 Propeller Tents. Propeller assets have a cylindrical center body with blades attached at regular intervals around the outside. In order to cover these assets, a raised-dome structure will be necessary. A single propeller asset will be stored under each tent structure. 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 propeller tent will consist of a single size with the following requirements. Sidewall height must be 6’ with a center height of 9’9”. The diameter must be 28’ and the frame is to be galvanized tubular steel.

3.1.4 Cover Material. The tent cover material will be a heavy-duty white translucent; 28 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. 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. The entrance to the tent will have a minimum height of 5’ and be easy to open and close by personnel that need access to the tent. All latches, zippers, and other closing mechanisms must have a minimum lifespan of 10 years before requiring replacement or maintenance.

3.1.6 Lifting Capability. Lifting of the tent must require only a single crane, via lifting points at the peak of the tent. 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; this package will allow 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 propeller 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.