EXHIBIT "B"
PROGRESS ENERGY
PIPELINE COLLOCATION GUIDELINES
November 19, 2001
1. OBJECTIVE
The purpose of these guidelines is to identify minimum
safety requirements for potential collocation of pipeline facilities
within Progress Energy's right-of-way. The National Standard of Canada
CAN/CSA-C22.3 No. 6-M91 (under part III of the Canadian Electrical Code)
principles and practices of electrical coordination between pipelines
and electric supply lines, September, 1991 has been adopted by Progress
Energy Corporation as the governing reference for the collocation of
pipeline facilities and electrical transmission facilities. NACE Standard
RP0177-95 has been adopted as a complementary reference. All design
and construction approval must be secured through Progress Energy's
Licensed Encroachment process.
A. APPLICANT shall hereinafter be referred to as Pipeline
Company.
B. Progress Energy corporation shall hereinafter be
referred to as Progress Energy.
2. LOCATION GUIDELINES
A. No excavation is allowed within fifty (50) feet
of transmission structures or foundations including all guy wires, anchors
and other attachments. Exceptions are possible with prior written approval
from Progress Energy, if proper support of the structures is maintained through use
of sheet piling or other appropriate support methods. Progress Energy requires that
the Canadian Electrical Code be met in all cases including the requirement
for 10 meters separation between pipeline structures. Exceptions are
possible with prior written approval, if an appropriate mitigation study
has been performed and submitted to Progress Energy for review and approval. Chapter
3 of the Canadian Electrical Association report entitled "Powerline
Ground Fault Effects on Pipelines", Report No. 239 T 817, dated
December 1994, provides graphs and tables indicating distances over
which power arcs can be sustained as a function of tower/pole GPR during
fault conditions for sample soils. Minimum clearances of pipeline structures
from electric transmission structures shall not be less than the distances
indicated in this report for the worst case soil types studied.
B. Parallel installation of pipelines under the conductors
is prohibited. A minimum of twenty (20') feet must be maintained from
the pipeline to the nearest conductor.
C. No pipelines shall be permitted to be located between
any transmission lines (circuits) and structures.
D. Pipelines shall not conflict with Progress Energy's future expansion
plans on the right-of-way.
E. No above ground appurtenances are permitted within
fifty (50') feet of Progress Energy's structures without prior written approval.
Peak induced voltages are likely to occur at transmission line phase
transposition locations, at transmission line or pipeline deviation
locations, at power line/pipeline crossings, and at taps or loops to
substations. Accordingly, above ground appurtenances should be located
as far away as practical from these locations.
F. Transitions of the pipeline within the right-of-way
from one side to the other are prohibited without prior review and written
approval by Progress Energy.
G. The centerline of the pipeline must be installed
five (5') feet from the outer edge of the right-of-way. Exceptions are
possible with prior review and written approval by Progress Energy.
H. Venting valves and blow off valves shall be vented
away from any potential ignition sources. The above ground height of
all venting and blow off valves shall be no greater than ten (10') feet.
I. Pipeline Company shall furnish and install permanent
markers showing the location of the underground pipeline(s). Any and
all piping installed by Pipeline Company shall have sufficient earth
cover to prevent breakage due to Progress Energy's trucks and heavy equipment. Progress Energy's
trucks and heavy equipment commonly exceed gross vehicle weights of
200,000 pounds or 100 tons.
J. Pipeline Company shall provide a clear, level and
easily passable thirty-foot (30') wide maintenance road along the entire
length of the Pipeline Utilization Area. Fences within the Pipeline
Utilization Area are prohibited without prior written approval by Progress Energy.
3. DESIGN GUIDELINES
Pipeline Company shall furnish Progress Energy studies showing that
they meet certain criteria prior to construction. These studies must
account for existing facilities as well as future facilities. Future
facilities will be studied per today's' design criteria and must be
re-studied when the system design is finalized.
A. Cathodic protection and interference mitigation
system designs must account for all facilities in the right-of-way.
In general, it is desirable to avoid over design of the mitigation system,
as this results in greater line losses (due to the flow of magnetically
induced currents) and higher DC stray currents from the pipeline's Cathodic
Protection System (and therefore, corrosion of electric supply line
structure foundations), particularly if it is an impressed current system.
On the other hand, under design of the mitigation system results in
safety concerns with respect to electric shocks, an increased risk of
damage to the pipeline (or even failure), and therefore a possible increase
in maintenance activity in the right-of-way with an accompanying increased
risk of accidents.
1. The study shall include stray DC current analysis
of all existing and future structures, foundations and anchors on right-of-way
(including pipelines and powerline structure foundations and guy wire
anchors, etc.). Sacrificial anodes are the preferred means of cathodic
protection to minimize stray currents.
2. The study shall include AC corrosion analysis of
the pipe.
B. Above ground appurtenances such as valves, pig launchers,
receivers, etc., shall have appropriate gradient control grids designed
for each site.
1. Dead front construction of test stations will be
required.
2. Measurements must be made at every exposed pipeline
appurtenances at regular intervals.
3. At above ground appurtenances during worst case
fault conditions, touch and step voltages shall not exceed the safety
limits determined in accordance with ANSI/IEEE Standard 80-2000. The
safety calculations shall be based on a 50-kg body weight and on the
backup fault clearing time. The decrement factor specified in Section
15.10 of ANSI/IEEE Standard 80-2000 shall be used to account for the
asymmetrical component of the fault current. Where a layer of crushed
rock is applied to increase the applicable touch and step voltage limits,
the derating factor, Cs, specified in Section 7.4 of ANSI/IEEE Standard
80-2000 shall be applied, to account for the effect of the soil beneath
the crushed rock.
4. The NESC 5 M.A. rule will not be exceeded.
5. All above ground appurtenances will be fenced and
the fence appropriately bonded to the gradient control system (if any)
to ensure that excessive touch and step voltages do not occur along
the fence.
6. Under worst case emergency load conditions, including
consideration of future growth, load unbalance, and superposition of
the effects multiple circuits running along the pipeline, touch and
step voltages are not to exceed 15 volts.
7. In designing gradient control grids, the effect
on touch and step voltages of connections of the appurtenance to any
electric distribution feeder neutral or other remotely grounded conductor
entering the site shall be taken into account.
C. Under worst case emergency load conditions, including
consideration of future growth, load unbalance, superposition of the
effects multiple circuits running along the pipeline, and voltage peaks
occurring near phase transpositions, pipeline/electric supply line deviations,
and crossings, and pipeline insulating flanges/joints, touch and step
voltages are not to exceed 15 volts anywhere along the pipeline. This
clause applies to both above ground appurtenances and buried pipeline
sections.
D. Consider combined conductive and inductive voltages
during the worst-case fault conditions. Mitigation on the pipeline needs
to be such that during the worst case fault conditions, the resulting
stress voltages will not exceed values that damage the coating, pipeline
wall, insulating flanges/joints, wires and wire connections (such as
connections to mitigation wires or to anodes), anodes, rectifiers and
test stations. The design should account for conduction of protective
devices across insulating joints or flanges, which can result in the
transfer of potentials from one pipeline section to the next.
E. In calculating conductive and inductive voltages,
the following parameters must be accounted for:
1. Current division between the overhead grounds and
tower ground.
2. The effect of the overhead ground in the cancellation
of a portion of the magnetic field.
3. Soil resistivity measurements shall be made at each
above ground appurtenance site, at locations where the pipeline is particularly
close to transmission line structures, at transmission line phase transposition
locations, at transmission line or pipeline deviation locations, at
power line/pipeline crossings, at taps or loops to substations and other
such locations where the highest AC interference levels are expected.
Furthermore, measurements should be made at regular intervals throughout
the collocation corridor, in order to obtain a representative set of
data for the whole corridor. Measurements made at intervals on the order
of 1-2 miles are considered a minimum. If great variations are found
from one site to the next, additional measurements should be considered.
Special precautions should be taken to avoid measurement error from
induced voltages from overhead conductors or from the proximity of buried
metallic objects. At each measurement site, measurements should be made
using the Wenner or Schlumberger 4-pin methods, throughout a range of
pin spacings (between adjacent current and potential pins) beginning
at about 0.5 ft and increasing logarithmically to a largest pin spacing
no less than, where possible, the larger of: i) 3 times the maximum
dimension of the site (i.e. diagonal of the perimeter fence), when an
above ground appurtenance site is nearby: ii) 300 ft.
4. Electric supply line design considerations minimizing
interference levels in nearby pipelines. Note, however, that the standards
recommendation to install or increase the number of buried counterpoises
should not be taken to hold unconditionally: Counterpoises can both
improve and worsen conductive interference effects, depending primarily
on the soil structure, the extent of the exposure zone and the disposition
of the counterpoises.
5. In calculating touch and step voltages and pipeline
coating stress voltages at a given location along the pipeline, note
that a fault at the nearest transmission line structure is typically,
but not always, the worst case.
6. All calculations of conductive interference levels
or of mitigation performance are to be made based on layered soil models
which reproduce the vertical resistivity variations exhibited by the
measurements at each measurement site.
7. Calculations must be made for single-phase-to-ground
faults occurring at representative locations throughout the collocation
corridor: i.e., at locations nearest above ground appurtenances, at
locations where the pipeline is particularly close to transmission line
structures, and at intervals of at least 10% of each uninterrupted exposure
to each transmission line circuit. Furthermore, for each fault scenario,
the contributions of all circuits affected by the fault are to be included
in the calculation.
F. Progress Energy's right-of-way shall not be used to satisfy wetland mitigation
requirements.
G. An electric load loss study shall be required to
determine if there are power losses due to the parallelism of the proposed
pipeline with Progress Energy's right-of-way.
H. An EMF study shall be required to assure the proposed
pipeline does not diminish Progress Energy's use of the right-of-way by increasing
EMF at the outer edge of the right-of-way.
4. CONSTRUCTION GUIDELINES
A. All of Pipeline Company's operations, activities
and equipment used within the right-of-way beneath or in proximity to
any of Progress Energy's facilities shall at all times be in strict compliance with
the applicable provisions of the following:
National Electrical Safety Code - NESC
National Association of Corrosion Engineers - NACE - Standard RP-01-77
Occupational Safety and Health Administration - OSHA
Federal State and Local Requirements
US D.O.T. Pipeline Safety Regulations - Part 192 or 195 as applicable.
B. All requirements to de-energize, reroute, cover
or mark any power line must be submitted in writing to the Progress Energy Encroachment
Agent before any work is commenced on the project or on any involved
spread. Progress Energy shall not be required to process any requests in less than
5 days, excluding weekends. If a request is pending, no work shall proceed
until the request is processed and approved. All costs associated with
the request shall be borne by the Pipeline Company. The Encroachment
Agent shall have sole jurisdiction to receive and grant such requests.
It is specifically acknowledged that Progress Energy employees from other departments
are not authorized to receive and determine such requests.
C. At above ground appurtenances during normal operating
conditions step and touch voltages should not exceed 15V. The Pipeline
Company must notify all personnel working on right-of-way that under
fault conditions this voltage will be greatly exceeded.
D. Pipeline Company shall secure all necessary permits
or licenses from Federal, State or Local Government and must provide
copies to Progress Energy prior to construction.
E. A Pipeline Company electrical safety inspector is
required on each spread until installation is complete. The Pipeline
Company shall institute a safety program to inform and train its workers
on how to work near electrical facilities. Clearly visible hazard notification
warning signs shall be posted within the Pipeline Utilization Area which
state "Progress Energy transmission rights of way contain high voltage power
lines. Extreme caution must be used when working in the right of way."
F. If 15V are exceeded during construction, then adequate
protection or procedures must be utilized by Pipeline Company including,
but not limited to, temporary gradient control mats or grids that extend
beyond the work area.
G. Any existing stray, buried and above ground metallic
materials located or excavated between an electric supply line and a
pipeline will need to be removed to prevent excessive pipeline coating
stress voltages or arcing from supply line supporting structures to
the pipeline during a fault on the supply line.
H. All metallic structures must be grounded and rubber
tire vehicles will be grounded by straps and by rod, if stationary.
No refueling operations shall take place within the right-of-way.
I. Work must cease during high winds, storms and pre-arranged
switching. Rubber protection shall be worn where required and gradient
control wires/mats installed as needed. Bonding is required across pipe
sections.
J. No equipment shall ever be operated in proximity
to power lines where the equipment, including any boom or extension
thereof, shall have the capability of violating any clearance distance
set forth in any applicable codes, including the NESC, NEC, or OSHA.
Lift equipment shall comply with NESC clearances.
K. Pipeline Company shall not use, store, dispose,
treat or generate any hazardous substances in Progress Energy's right-of-way.
L. Ground elevation must not be changed more than two
(2') feet from existing grade. Pipeline Company is responsible for restoration
of the utilization area to equal or better condition that existed prior
to construction.
M. A Progress Energy Construction Inspector will be assigned to
verify the terms of the agreement and to coordinate requirements by
Progress Energy to adjust and modify facilities to allow construction of the pipeline.
The construction inspector shall be present and on site at all times
during construction. All costs of Progress Energy's Construction Inspector are to
be paid by the Pipeline Company. Progress Energy's Construction Inspector shall be
notified fourteen (14) days prior to the commencement of construction
within Progress Energy's right-of-way and within five (5) days when any pipeline
is charged or pressure tested during construction. The Pipeline Company's
Construction Manager (or designated representative) will make reports
to Progress Energy's Construction Inspector regarding any damages to Progress Energy's property,
private property or other public facilities. Pipeline Company agrees
to pay all expenses incurred in connection with the repair of such damages.
N. As a safeguard in respect of the above, the Pipeline
Company shall carry Workers' Compensation Insurance in the minimum amounts
required by statute and shall carry policies of insurance acceptable
to Progress Energy with respect to (a) General Liability not less than $5,000,000
combined single limit and (b) Pollution Liability not less than $5,000,000
combined single limit and (c) Automobile Liability not less than $1,000,000
combined single limit. The Pipeline Company shall have the insurance
policies mentioned in (a), (b) and (c) above, respectively, endorsed
by its insurance carrier to provide blanket contractual coverage, expressly
with respect to this section, to the full limits of and for the liabilities
insured under said policies; and prior to the commencement of any construction
of its Facilities hereunder, the Pipeline Company shall furnish Progress Energy with
a certificate on Progress Energy Form 908-404(s) or equivalent acceptable to Progress Energy,
completed by the Pipeline Company's insurance carrier showing it carries
the requisite insurance and that the specified policies insure the liability
assumed by the Pipeline Company under this section. Effective on initial
construction activities, and in five (5) year increments thereafter,
the aforementioned insurance coverage shall be adjusted by adding to
the coverage amounts of the previous five (5) year period, the increase
(if any) of the CPI - All Urban Consumers as reported by the Bureau
of Labor Statistics for the previous five (5) year period (or in the
event the Index is discontinued, an equivalent cost of living index
of some other appropriate governmental agency elected by Progress Energy.
O. Pipeline Company is hereby advised that the generation,
transmission and/or distribution of electrical energy involves the handling
of a natural force which, when uncontrolled, is inherently hazardous
to life and property. Pipeline Company is further hereby advised that,
due to the nature of the work to be performed pursuant to these guidelines,
other hazardous or dangerous conditions (not necessarily related to
the inherent danger of electricity) may also be involved in the work.
Accordingly, prior to the commencement of any work, the pipeline company
shall inspect the job site specifically to ascertain the actual and
potential existence and extent of any hazardous or dangerous conditions,
and instruct its employees and contractors with respect to said conditions
and the safety measures to be taken in connection therewith; and, during
the course of the work, pipeline company shall take all such measures
as may be deemed necessary or advisable to protect and safeguard the
person and property of the pipeline company and the general public against
all hazardous or dangerous conditions as the same arise.
5. OPERATION/POST CONSTRUCTION
A. In addition to the foregoing requirements, the Pipeline
Company shall comply with the requirements of "Subpart B - Reporting
Accidents and Safety-Related Conditions" of the United States Department
of Transportation Pipeline Safety Regulations Part 192/195 (Transportation
of Hazardous Liquids by Pipeline, 49 CFR), as appropriate and shall
promptly provide to Progress Energy a duplicate copy of all correspondence or other
notification made to the US DOT pursuant to incidents as they may occur
on lands utilized by this agreement.
B. The Pipeline Company further hereby agrees that
if any member of the public, or any employee of the Pipeline Company
or the Pipeline Company's agents, contractors, representatives or other
persons engaging in the Pipeline Company's activities upon the right-of-way,
or if any property including Progress Energy or the public is injured
in the course of work being performed under the provisions of this Agreement,
the Pipeline Company shall first notify Progress Energy's Transmission
Area Maintenance Engineer at (800) 700-8744 and if unable to reach,
contact Progress Energy's Claims Department at (727) 826-4373 during
regular business hours from 8 a.m. to 5 p.m., Monday through Friday,
or (727) 826-4001 at night, weekends or holidays. Such notification
shall be made immediately upon knowledge, in person or by telephone
and promptly confirmed in writing within twenty-four (24) hours and
shall include all pertinent data such as name of injured party, location
of accident, description of accident, nature of injuries, names of witnesses,
disposition of injured or deceased person.
C. Progress Energy's Transmission Area Maintenance
Engineer (800) 700-8744 shall be notified within five (5) days when
any pipeline is to be charged or pressure tested during maintenance
of the pipeline and/or or post-construction activities. The Pipeline
Company's Construction Manager (or his designated representative) will
make reports to Progress Energy's Transmission Maintenance Engineer
regarding any damages to Progress Energy's property, private property
or other public facilities which occurs during any maintenance or post-construction
activities. Pipeline Company agrees to pay all expenses incurred in
connection with the repair of such damages.
D. The Pipeline Company may at any time remove any
or all of its Pipeline from Progress Energy's right-of-way, provided that the Pipeline
Company gives Progress Energy written notice a minimum of thirty (30) days in advance
of the planned removal. Progress Energy shall not be obligated to refund any amounts
received from Pipeline Company. Should it be necessary, in the sole
judgment of Progress Energy, for the pipeline to be relocated or removed, Progress Energy shall
notify the Pipeline Company of the changes which Progress Energy deems necessary,
and the Pipeline Company agrees to make such changes, at the Pipeline
Company's sole expense. Progress Energy shall exercise its best efforts to identify
alternative space on the right-of-way for the equipment and facilities
of the Pipeline Company that will comply with clearance and separation
standards and satisfy safety requirements of applicable codes and government
regulations, and that will reasonably accommodate the Pipeline Company's
purposes under this Agreement. The Pipeline Company agrees to complete
any partial relocation of any of its pipeline(s) within thirty (30)
days of notification from Progress Energy, unless the Pipeline Company determines
that such partial relocation cannot reasonably be accomplished within
the said thirty (30) days, in which case the Pipeline Company shall
provide to Progress Energy for review and approval a schedule for the timely accomplishment
of such partial relocation, consistent with any necessary permitting,
right-of-way acquisition and/or mobilization of resources to make such
partial relocation The Pipeline Company further agrees to complete any
major relocation or removal of the pipeline or portions thereof within
ninety (90) days of notification from Progress Energy, unless the Pipeline Company
determines that such major relocation cannot reasonably be accomplished
within ninety (90) days, in which case the Pipeline Company shall provide
to Progress Energy for review and approval a schedule for the timely accomplishment
of such major relocation, consistent with any necessary permitting,
right of way acquisition and/or mobilization of resources to make such
major relocation, In the event it should be necessary for the Pipeline
Company to remove or relocate any portion of the pipeline from the right-of-way
as required pursuant to this paragraph, the parties agree to exercise
their best efforts to resolve the conflict in a timely manner, provided,
however; that such removal or relocation does not exceed one-hundred
and eighty (180) days.
E. Requests for modifications of existing or proposed
facilities or for the placement of future pipelines within in the right-of-way
shall be submitted in writing to Progress Energy's Encroachment Agent.
Future pipelines shall require a minimum of a twenty-five (25') foot
separation. Exceptions may be permitted with prior written approval
by the Encroachment Agent.
F. Notification of completion of construction on the
designated utilization area must be made to Progress Energy's Encroachment
Agent (800) 700-8744 within thirty (30) days of completion. Within one
hundred eighty (180) days of completion, Pipeline Company shall provide
to Progress Energy three (3) complete sets of As-Built Drawings, sealed
by a registered surveyor, noting the location of the Pipeline Company's
facilities and Progress Energy's nearest structures.