BICSI BREAKFAST CLUB
Honolulu, Hawaii 2008
OUTSIDE PLANT
INFRASTRUCTURE
OUTSIDE PLANT
Presented by:
John C. Adams
RCDD/OSP Specialist
BICSI Master Instructor
Owner- Adams Telecomm
AGENDA
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ANSI Standards (OSP related)
Bonding and Grounding Terms
ANSI Outside Plant Standard
Key Areas of Outside Plant (OSP)
Safety Issues (OSHA)
National Codes
ANSI Standards
ANSI
American National Standards Institute
TIA
Telecommunications Industry Association
EIA
Electronic Industries Alliance
ANSI Standards
• ANSI/TIA/EIA- 568-B.1
Commercial Building Telecommunications Cabling
Standard
• Specifies minimum requirements for telecommunications
cabling within a commercial building up to and including
the telecommunications outlet/connector, and between
buildings in a campus
• Specifies component requirements, cabling distances,
telecommunications outlet and connector configurations
and recommended topologies
ANSI Standards
ANSI/TIA-569-B covers:
• Inter-building Backbone Cables
• Telecommunications Rooms (TR)
• Equipment Rooms (ER)
• Entrance Facilities (EF)
• Clearances
• Firestopping
ANSI Standards
ANSI/TIA- 569-B OSP Sections
• Pathways include aerial, direct buried,
underground, and tunnels
• Cable trays and conduit
• Appendix A Firestopping
ANSI Standards
ANSI/TIA/EIA-606-A
• Administrative Standard for Commercial
Telecommunications Infrastructure
ANSI Standards
ANSI/TIA/EIA-606-A
• In a nutshell, everything has to have a
“unique identifier” that should last the
lifetime of what you’ve labeled.
ANSI Standards
ANSI-J-STD-607-A
Grounding (Earthing) and Bonding
Requirements for Telecommunications
Bonding and Grounding Terms
TMGB
(Telecommunications Main Grounding Busbar)
• Serves as the dedicated extension of the
building grounding electrode system for
the telecommunications system
• Must be accessible to telecomm personnel
• Extensions of the TMGB will be identified
as TGBs
Bonding and Grounding Terms
TMGB
• Locate the TMGB as close as possible to
the primary protection for incoming cables
• A minimum of #6 AWG shall be used for
connections to the TMGB with
consideration up to 3/0 for extended
lengths of bonding conductors
Bonding and Grounding Terms
TGB
(Telecommunications Grounding Busbar)
• Common central point of connection for
telecommunications systems and
equipment in the location served by that
telecommunications closet or equipment
room
Bonding and Grounding Terms
TBB
(Telecommunications Bonding Backbone)
• Serves to interconnect all TGBs to the
TMGB
• Shall be an insulated copper conductor
• Minimum size shall be a #6 AWG with
consideration up to a 3/0 AWG
ANSI Standards
ANSI/TIA-758-A
Customer Owned Outside Plant
Telecommunications Infrastructure Standard
ANSI/TIA- 758-A
• Telecommunications in this standard
refers to all forms of information, for
example:
Voice, Data, Video, Alarm, Environmental
Controls, Security, and Audio
ANSI/TIA-758-A
Maintenance Holes
Shall be equipped with:
• Corrosion resistant pulling irons
• Corrosion resistant cable racks
• Sump for drainage
AND SHALL NOT BE SHARED WITH
ELECTRICAL INSTALLATIONS
ANSI/TIA-758-A
Handholes
• Shall not be used in place of a MH
• Shall not be used for splicing
• Shall not be shared with electrical
• Shall not exceed 4’ x 4’ x 4’
• Should not be used in runs of more then (3)
trade size 4 conduits
• Conduits should be aligned on opposite sides
and at the same elevation
ANSI/TIA- 758-A
Fiber Optic Cable
• Bend radius shall be no less then 20 times
the cable diameter during installation and
15 times after installation
• Accurate OTDR tests require a minimum
of 100 meters or 328 feet
What’s the purpose of standards?
• To establish a basis to quantify, compare,
measure or judge:
capacity, quantity, content, extent, value,
and quality
• To promote interoperability of components
and systems by multiple manufacturers.
Why do we have to know them?
• To resolve potential disputes
• Produce the results expected
• Know when and where they apply
Key Areas of OSP
Planning and Installation
Existing Buried Utilities
• Staking / flagging / painting within 24” shall
be considered a good mark
• The potholing method will be used to
determine the EXACT location of the utility
before proceeding with construction
• Potholing in road surfaces shall be no
greater then 12” x 12”
Key Areas of OSP
Backfilling the trenches
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Can we use native soil?
Compaction?
Concrete encasement / capping
Flow-able Fill (Slurry)
Reseeding or Sodding
Key Areas of OSP
Road or Parking Lot Excavation
• Paved roads will be restored to original
thickness or a minimum of ? thick
• Areas that are excavated must be restored
within ? hours
• What method? Cut and restore, bore,
casing, etc
Key Areas of OSP
Handholes
• Are used to aid in the placement of cables
• Will not be used in place of a MH nor
placed in a main conduit system
• Will not be shared with electrical
OSP
Handholes
• Minimum size is a 4’ x 4’ x 4’ and larger
sizes are acceptable (ANSI accepted?)
• Will be equipped with lid, pull irons, cable
racks, and hooks.
Key Areas of OSP
Ducts
• Duct shall be made of PVC
• Shall be Schedule , EB, DB, RNC 40 or 60
RMC, HDPE, or IMC
• Use 40 or DB if the duct is to be concrete
encased or direct buried. (EB can be used only
for concrete encased runs)
• Use spacers every 5’ on all 20’ lengths of
conduit (concrete blocks ?)
Key Areas of OSP
• No more then two (2) 90 degree bends or
a total of 180 degrees of bends between
any two pulling points
• Back to back bends should be avoided
Key Areas of OSP
Rod and Mandrel
• Existing vacant ducts, without pull strings,
that are to be used for new cable
installation shall be cleaned and tested
with a mandrel.
• Mandrel must be no more then ½” less
then the ID of the duct. Mandrel must be
non-flexible and be approx. 12 inches long
Key Areas of OSP
Grounding (coming into buildings)
• Ground wire must be a minimum #6 AWG
• Must be done without sharp bends
• Must be placed as short as possible
• Must be 25 ohms or less (per NEC)
Key Areas of OSP
Quality Assurance
• Who does the OSP inspections at your
institute?
• Are they qualified or were they the one
person that knew the most about OSP?
Safety Procedures
All work performed will comply with:
OSHA
Occupational Safety and Health Administration
OSHA
The main areas of OSHA for OSP are:
29 CFR 1910.268
Telecommunications
29 CFR 1910.146
Permit Required Confined Spaces (PRCS)
OSHA 1910.268 (e)
Personal Protective Equipment (PPE)
• Gloves, (insulated or rubber if required)
• Hardhats/Helmets (Class B type)
• Eye Protection (side shields if required)
OSHA 1910.268 (o) (2)
Entering a MH or unvented vault
• The internal atmosphere must be tested
for combustible gas and, except where
continuous forced ventilation is provided,
the atmosphere must be tested for oxygen
deficiency (less then 19.5%)
OSHA 1910.268 (o) (2) (i) (B)
• When unsafe conditions are detected by
testing or other means, the work area shall
be ventilated and otherwise made safe
before entry
OSHA 1910.268 (o)(2)(ii)(B)
A continuous supply of air shall be provided
while work is being performed in MHs under
these conditions:
• Combustible or explosive gas was initially
detected
• Organic solvents are being used
• Using open flame
OSHA 1910.146
Confined Spaces (definition)
• Is large enough and so configured so that
an employee can bodily enter and perform
assigned work
• Has limited or restrictive means for entry
and exit
• Is not designed for continuous employee
occupancy
OSHA 1910.146
Permit Required Confined Space (PRCS)
(definition)
• Any space (open trench, maintenance
hole etc.) that has the potential to contain
a hazardous atmosphere, material that
has the potential for engulfing, or contains
any recognized safety or health hazard
requires a permit to enter.
PRCS Entry
• What happens next when a conventional
confined space becomes a PRCS?
• Is the procedure for entering this space
any different then any other confined
space?
YES !!
CODES
Code
• A rule intended to ensure safety
• Typically enforced by government
• Addresses the safety of persons, property,
and the environment
CODES
The Main codes for OSP:
• NESC (2007 Edition)
National Electrical Safety Code
• NEC (2008)
National Electrical Code
• OSHA Code of Federal Regulations (CFR)
NESC
• Published by the IEEE
Institute of Electrical and Electronic Engineers
• Minimum safety requirements
• Is mainly OSP oriented (95%)
• Used as the basis for R/W permits
• Revised every three years
• Contains “should” and “shall”
• “Practical and “Possible”
Important NESC Sections
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Section 1 Rule 012 General Rules
Section 1 Rule 013 Application
Section 2 Definition of Terms
Section 9 Grounding Methods
Part 2 Safety for Overhead Lines
Part 3 Safety for Underground Lines
Storm Loading Calculations
NEC
• Published by the National Fire Protection
Association (NFPA)
• Also called the NFPA-70
• Revised every three years
• Minimum safety requirements
• Contains “shall” and “should”
• Used extensively by the AHJ
Important NEC Sections
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Section 90-2 Scope
Article 100- Part A- Definitions
Article 250- Grounding and Bonding
Article 300- Wiring Methods
Article 770- Fiber Optics
Article 800- Communications
Article 820- CATV
Article 830- Network Broadband
MAHALO
FOR YOUR
TIME AND ATTENTION