METHOD STATEMENT FOR INSTALLATION STRUCTURE CABLING SYSTEM

METHOD STATEMENT FOR INSTALLATION STRUCTURE CABLING SYSTEM

This document outlines the method for installing a structured cabling system for MSRAPROZONE. It details the sequence of work, materials required, and adherence to project specifications and industry standards. Following this method ensures a safe, efficient, and high-quality cabling infrastructure.

1.0. PURPOSE

This document is prepared for the methods of proper installation, Testing, and commissioning of the Structure cable system for the [Project Name].

2.0. SCOPE

This method of statement covers information regarding methodologies for Structure cabling system Installation, Testing, and commissioning.

3.0. PLANNING CHECKLIST

3.1. BEFORE STARTING INSTALLATION

To avoid problems during the accomplishment of the installation it is necessary to make a checklist to ascertain needs for help with material and people (who decides what).

3.1.1. Determine the last issue of all documents and drawings. Routines for updating and correcting have to be established with one person responsible.

3.1.2. Review the building according to the last documentation and drawings with the responsible person.

3.1.3. State all disagreements and special action points in writing.

3.1.4. Determine who will be involved in the installation project. (Name, how to reach them, etc.).

3.1.5. Determine a protocol for registration of all activity during the installation time. This document shall contain

• Who does what and when? The date and time.
• Contacts and meetings; date, time, and who attends.
• Delivery and control of materials and tools.
• Use of materials and tools.

3.1.6. Check locations of main / substations and termination boxes

• Locations of electrical environment contaminant sources
• Space for installation

3.1.7. Check locations of surge arrestor/wiring concentrators and optical fiber splice boxes (probably near the inlet of the cables)

3.1.8. Plan for special timing desirability from the customer / other installation activity

3.1.9. Plan for equipment delivery

• Equipment stock
• Control of received equipment
• Delivery plan
• Delivery control
• Storage on site
• Special tools needed
• Need to use a tool that demands know-how
• Special conditions to be taken care of (fire, gas, electrical interference) 

4.0. NUMBERING AND LABELLING

Provide guidelines for cable administration within a campus

4.1.1. The cabling plan needs a numbering and labeling scheme that does not change over time and is independent of the devices that attach to it (essential for the administration of the network cable plant over a long period).

4.1.2. Cables shall be labeled at each end to indicate the destination termination point. Termination points are the telecommunication outlets (TO). The numbering of TOs is based on floor and work area numbers.

4.1.3. Floor and TO numbers are the basic numbers for these horizontal cables, both fiber and Twisted

4.1.4. Pair. A unique number is assigned at each cable and recorded on each cable label.

4.1.5. At a minimum, appropriate labels shall be put on cables at each end of a cable run and each termination point.

4.1.6. The following records shall be maintained:

• A cable schedule for each distributor [Campus Distributor (CD), Building Distributor (BD), Floor Distributor (FD)] indicating the cable number, its source and destination, its type, and the current use. This schedule shall be classified both by cable number and by destination.
• A master cable schedule meeting the same requirements as listed above.
• A full set of complete building (as-built) cabling plans.
• A running list of work orders with all details on moves and changes.
•  A complete patch list for all cross-connections on the campus.

All products in the concept are marked for easy localization and identification. The marking system is based on the numbering of floors and outlets marked on the floor plan (not dependent on the office numbers).

5.0. LOCATION of CABINETS and DISTRIBUTION BOXES

5.1.1. Cabinets should be arranged to provide safe and clear access to all working faces.

5.1.2. Cabinets or Distribution Boxes should not be installed in the neighborhood of high-power electrical installations (transformers, generators, elevators, photocopiers, air-conditioners, heaters, coffee machines...).

5.1.3. Cabinets should be centrally located in the area they will serve. The telecommunications closets shall be situated as close to the vertical access (building backbone cabling) as possible.

5.1.4. Respect the maximum drive distances between the equipment racks and the outlets.

5.1.5. When installing wall-mounted Cabinets or Distribution Boxes, make sure there are no electrical, water, or gas conduits behind or in the wall.

5.1.6. Cabinets should be in a room that is environmentally suitable and that can be secured. All cabinets should have locks or intrusion detection to safeguard the network infrastructure.

6.0. INDOOR CABLING

6.1.1. Make a site survey and analyze the available documentation (as-built plans, floor plans, cabling lists, cable management software) to determine the best cable routes.

6.1.2. From the cabling system design phase, prepare the lists with the numbering scheme for cables, distribution frames, and patch panels. Prepare the marking tags for the cables.

6.1.3. Review all the possible cable routes, checking for problem areas such as bends, sharp corners, and cutting edges that might damage the cables. Properly protect these areas. If possible, avoid UTP cable areas where high electromagnetic noise may be created. If impossible, use Screened Twisted Pair (TP) cables or Optical Fiber cabling or suitable screened and earthed containment for these areas.

6.1.4. Review all the possible routes, checking for vertical cable stretches where the cables cannot be tied to a support. Install adequate support structures with provision for tying the cables.

6.1.5. Make a schedule for pulling the cables:

• If infrastructure works are necessary, schedule these well ahead of time so that all cable laying may be performed by the installation team in the same period. Schedule the installation of cabinets and distribution boxes/frames so that they will be ready before the cable pulling begins. First, pull the horizontal Twisted Pair (TP), then the Optical Fiber cables, and finally the pre-connected Optical Fiber cables.
• Start with the longest cables; do not try to pull too long lengths in one haul, the cable may be overstressed because friction builds up with length.
• Cable one floor after the other with all the horizontal cables. Then start with the vertical and outdoor cabling.

6.1.6. Before pulling, mark all the cables according to the lists prepared in advance.

6.1.7. When pulling cables:

• Respect bending radius and pulling forces for the horizontal Optical Fiber and Twisted Pair cables
• Be aware that in a cold environment, the cable jackets are stiffer and more sensitive to bending and pulling. The range of recommended installation temperatures of cables is much smaller than the operating temperature range.
• Respect the rules for avoiding “interference” areas
• Cables must be free of tension at both ends as well as over the lengths of the run. In cases where the cable bears some stress (e.g. a vertical stretch), supports and ties must be used to relieve this strain over a longer length of the cable.
• Bundle and fix cables properly in channels and raceways
• Cables to the same drop point may be bundled together
• To minimize potentially harmful effects from powered devices in the run area, cables should enter and exit this area at 90-degree angles.
• Cables that require service loops or spare additional length should be coiled with the largest possible bending radius, at least larger than the minimum specified. The cable coil should be tied to nearby support, at least at the base and sides of the coil; tying only at the top of the coil may lead to knicking of the cable.

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