B08_Attachment_3_SOW_OLYM-Tower_Climbing.pdf

GENERAL DESCRIPTION:

Olympic National Park has a requirement for the installation of two antennas each on four towers. The towers are located at the following communications sites:

• Ellis: LAT 48°07’47.1”N, LON 124°18’21.7”W, site elevation 3459’

• Bahokas: LAT 48°22’14.8”N, LON 124°40’23.4”W, site elevation 2985’

• North Point: LAT 48°05’03.7”N, LON 124°04’20.2”W, site elevation 3350’

• Octopus: LAT 47°44’56.8”N, LON 124°10’31.9”W, site elevation 2444’

The tower work will require, at a minimum, two personnel. Each climber will be certified to climb towers as well as certified for tower rescue. Selected climbers will provide their certification prior to climbing the towers. Work will entail moving existing antenna to a higher location on the tower, installing new transmission cable, and test completed work to ensure antenna and cable assembly meet industry standards.

ANTENNA & CABLE REPLACEMENT:

General:

Each tower will require the removal and installation one UHF omni antenna and possible the replacement of the VHF omni antenna as well dependent of test results. If it is found that the transmission line requires replacement the contractor will be responsible for cable installation from the antenna into the building to the lighting protection device (LPD). The Park will be responsible for everything after the LPD.

Materials:

The Park will provide the following materials:

• Four Telewave ANT150F2 VHF antennas

• Four Telewave ANT400F2 UHF antennas

• 600’ of LMR-600 cable

• 50 LMR-600 connectors

• 100 Tower clips

• 16 Grounding kits for LMR-600

Contractor will provide the following:

• Electrical tape

• Zip Ties

• Coax weather proofing material

Installation:

Contractor will sweep both the UHF and VHUF transmission cables. If the cables and/or antennas fail, the contractor will remove them and replace with a new transmission cable and/or antennas.

Testing will include the following:

• Voltage Standing Wave Ratio (VSWR)

• Return loss

• Distance to Fault return Loss

If the VHF antennas and /or transmission cable pass the testing they will remain in-place. All UHF antennas will be replaced regardless of the test results.

Prior to climbing the tower all radio equipment tied to the transmission cable will be turn off and remain off while climbers are on the tower.

All exterior cable connectors will be weather proofed.

All transmission cables will be tied or clip to the tower.

All transmission cables will be grounded using LMR-600 grounding kits.

Miscellaneous:

Safety of personnel is the utmost importance. The contractor will ensure all personnel have the appropriate PPE to perform tower climbing duties. A visual hazard analysis will be performed by the contract prior to climbing the tower to ensure the tower is safe to climb. The following is the minimum requirements to meet OSHA standards

• First Aid Kit

• Fall Protection Systems – Fall protection systems must meet OSHA standards 1910.140. Full Body harness is required. The use of body belts or tree trimmer belts is forbidden.

• Hard Hat – ALL personnel working on or within the fall radius of the tower must wear hard hat.

Hard hats will meet OSHA 1926.100 standards.

• Foot Protection - Foot protection will be in accordance with OSHA 1910.136 standards.

• Gloves

The contractor will have a rescue plan in place and a safety briefing will be conducted prior to each climb.

Park personnel will be onsite for each climb and will remain on site to monitor work until the climbers have completed their work.

Contractor will provide a schedule that includes travel and detail of work for each day. Contractor will be responsible for transport of climbing personnel to and from the work site and will be responsible for any required lodging.

Contractor will provide all need tools to complete assign work. This will include any test equipment need to perform sweeps of the antenna and transmission cable.