MANHOLE/HANDHOLE NO. :
CONTRACT NO. :
JOINT BOX NO. :
LINK DESTINATION :
CABLE TYPE/ NO. OF CORES :
CABLE MANUFACTURER :
INSTALLATION YEAR :
D. SUBDUCTS
1. Subducts (or equivalent) on straight run installed in the underground duct-bank shall be rigid and must have 32 mm outside diameter and made from HDPE piping compound, its inner wall must be smooth and its pulling length must not exceed 450 meters. It must comply with industry standard ASTM-F-2160, with TRUE-9 – "1 inch Trade size".
2. Subduct (or equivalent) on handholes and inside the building shall be corrugated, flexible and fire retardant (2 hours UL fire rating) with 25 mm outside diameter. Sub-ducts installation shall be in accordance with TCS-T-111.05. Nylon pull ropes ¼ inch diameter (of different color) shall be provided and installed in all vacant duct and subducts.
3. CONTRACTOR shall submit sample of the 25mm corrugated, flexible and 32mm outside diameter rigid HDPE subducts for COMPANY review and acceptance.
4. HDPE couplers and accessories shall be as per industry standard ASTM-F-2176. E. COMMUNICATION PULL BOX
Communication pull box shall be NEMA standard type-4X with 500 mm (H) x 400 mm (W) x 200 mm (D) minimum (unless otherwise specified) and shall be of stainless steel type 304 sheets with opening type cover and shall be marked “COMMUNICATION PULL BOX” with number at the cover. All communications pull box mounted/installed inside and outside the building shall be grounded with a minimum 70mm2 grounding cable with green/yellow insulation. Grounding wire shall be connected to the
power plant and substation grounding grid. F. COMMUNICATION CABLE TRAY/LADDER
1. CONTRACTOR shall supply and install a 12 inches wide telecommunication cable tray with accessories for Fiber Optic Cable installation and shall be supplied and installed inside communication room/area of the building. Electrical cable trays will not be an acceptable substitute for communication cable tray/ladder.
2. Cable trays and cable ladders shall be primarily constructed of 1.65mm wall rectangular tubing in high strength alloy, with minimum field strength of 50,000 psi and Cross members with minimum width span of 300mm and shall be welded at 300mm (rung) intervals each along the over-all section/length of the cable tray/ladder. Each over-all section/length shall be finished with telephone gray baked enamel.
3. New cable tray/ladder shall be used to route the proposed U/G non-metallic fiber optic cable inside COMPANY approved subduct up to the communication room. CONTRACTOR to install
DRAWN BY: MAL
DATE: CHK’D BY: MAL APPROVED TE&SA DEPT. MAL OPERATING DEPT. CERTIFIED BY: FSM REVISIONS
THIS DRAWING IS NOT TO BE USED FOR CONSTRUCTION OR FOR ORDERING MATERIALS UNTIL CERTIFIED AND DATED
NO. 3 2 1 DE S CRIPT ION CHK’D requires it.
4. CONTRACTOR shall evaluate and determine the exact quantity required for each site, as part of his Base design and Detail engineering for the project.
G. OPTICAL FIBER MANAGEMENT RACK
At sites where Fiber Optic Splice/Termination Panel is specified, the following technical specifications should be met:
The Fiber Optics Cable Management rack shall be designed to utilize a standard EIA (Electronic Industries Association) 19 Inch rack which will be suitable for mounting splice cassette/splice organizer modules, as well as modules which will terminate fiber optics pigtail and fiber optics patch cable. Each standard EIA 19 inch rack shall be of a height which is consistent with the overall equipment installation at the site (either 2.0 meters, or 2.1 meters high, depending on the installation).
As part of the design of the Fiber Optic Cable management Rack, enclosures will be provided for the housing of splice organizer/splice cassette trays, used to splice incoming fiber optics cable (indoor cable, or underground fiber optics cable) with fiber optics pigtail cables. The enclosure used for this purpose may be either a “pull-out” type design (where a technician will pull out the associated tray of the enclosure from the front access, exposing the inner fiber optics joints), or may be a “swing frame” design (with a left-hand hinge, and a handle on the right side) to allow the access for the splice organizer/splice cassette tray, by “swinging out” the enclosure from the right side handle. Splice organizer trays used in this enclosure shall be sized to hold the splice organizer/splice cassette tray shall be designed with sufficient space, and coiling supports to provide storage of a minimum of five (5) meters of excess fiber optics pigtail cable (48 pigtails).
As part of the design of the Fiber Optic Cable Management Rack, enclosures will be provided for the housing of fiber optics termination connections (FC/PC barrel, or bulkhead connectors) used to interconnect fiber optics pigtail cords with Fiber Optic Patch Cable. Depending on the size of the installation, the enclosures used to house fiber optics termination connections will contain 48 FC/PC connections. The enclosure used for this purpose may be either a “pull-out” type design (where a technician will pull out the associated tray of the enclosure from the front access, exposing the connections between the fiber optics pigtail cables with the fiber optics patch cables), or may be a “swing frame” design (with a left-hand hinge, and a handle on the right side) to allow the access to the interconnection between the fiber optics pigtail cable, and fiber optics patch cable, by “swinging out” the enclosure from the right side handle. Also, the enclosure used to hold the splice organizer/splice cassette tray shall be designed with sufficient space, and coiling supports to provide storage of a minimum of five (5) meters of excess fiber optics pigtail cable (for 36 core fiber connection termination enclosure), and a minimum of five meters of excess fiber optics patch cable (for 48 fiber optics patch cables). FC/PC Fiber Optic Barrel, or Bulkhead connectors used shall allow for no greater than a 1.0- dB/per connection loss, when the connection is used, and shall be designed for use with Single Mode Fiber Optics Cable.
Also, as part of the design/construction of the Fiber Optics Cable Management Rack, all accessories required to orderly route incoming underground fiber optic cable, indoor fiber optics cable, as well as fiber optics pigtail cable, and fiber optics patch cable shall be provided. These may include items such as “D” channels, incoming flexible sub-duct, mounting supports (for incoming fiber optics cable), buffer tubes for fiber optics cores (in the enclosure used for splicing), brackets/guides to route fiber optics pigtail/patch cable between portions of the Fiber Optics Cable Management Rack, and other accessories which are required as part of the equipment manufacture’s design/construction of the Fiber Optics Cable Management Rack.
DRAWN BY: MAL
DATE: CHK’D BY: MAL APPROVED TE&SA DEPT. MAL OPERATING DEPT. CERTIFIED BY: FSM REVISIONS
THIS DRAWING IS NOT TO BE USED FOR CONSTRUCTION OR FOR ORDERING MATERIALS UNTIL CERTIFIED AND DATED
NO. 3 2 1
DE
S
CRIPT
ION
CHK’D optics pigtail cable, and fiber optics patch cable, the Fiber Optics Cable Management Rack shall allow
for the termination of a minimum of 108 fibers.
Also the Fiber Optics Cable Management Rack shall be provided with required dust proof covers (to prevent fiber optics splices from dust entry) and identification Tags/Labels to identify all incoming fiber optics cables to the cable Management Rack. Prior to the CONTRACTOR supply of the Fiber Optics Cable Management Rack to the COMPANY, the CONTRACTOR shall provide full colored brochures, and equipment specifications for COMPANY review and approval.
1.02 OTHER WORKS TO BE DONE BY THE CONTRACTOR