EXHIBIT “B”
PROGRESS ENERGY FLORIDA, INC.
PIPELINE COLLOCATION GUIDELINES
July 28, 2003
1. OBJECTIVE
The purpose of these guidelines is to identify minimum safety requirements for potential collocation of pipeline facilities within Progress Energy Florida, Inc.'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 Florida, Inc. 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 Florida, Inc.’s Transmission Right of Way Use Program.
A. APPLICANT shall hereinafter be referred to as Pipeline Company.
B. PROGRESS ENERGY FLORIDA, INC. shall hereinafter be referred to as PEF.
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 PEF if proper support of the structures is maintained through use of sheet piling or other appropriate support methods. PEF requires that the Canadian Electrical Code be met in all cases including the requirement for ten (10) meters separation between pipeline structures. Exceptions are possible with prior written approval, if an appropriate mitigation study has been performed and submitted to PEF 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 directly under the conductors is prohibited. A minimum of twenty feet (20’) of separation must be maintained from the pipeline to the nearest conductor.
C. On transmission rights-of-way where there are two (2) or more circuits, no pipelines shall be permitted to be located between the transmission lines (circuits) and structures.
D. Pipelines shall not conflict with PEF’s future expansion plans on the right-of-way.
E. No above ground appurtenances, including manholes, are permitted within fifty feet (50’) of PEF’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 PEF.
G. The centerline of the pipeline must be installed five feet (5’) from the outer edge of the right-of-way. Exceptions are possible with prior review and written approval by PEF.
H. Venting valves and blow off valves shall placed outside the easement area and be vented away from any potential ignition sources.
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 PEF’s trucks and heavy equipment. PEF’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 PEF.
3. DESIGN GUIDELINES
Pipeline Company shall furnish PEF 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 fifteen volts (15V).
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 fifteen volts (15V) 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 one to two (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 feet.
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 ten percent (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. PEF’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 PEF’s right-of-way.
H. An EMF study shall be required to assure the proposed pipeline does not diminish PEF’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 PEF’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 PEF Encroachment Agent before any work is commenced on the project or on any involved spread. PEF shall not be required to process any requests in less than fourteen (14) 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 PEF 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 fifteen volts (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 PEF 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 “PEF transmission rights of way contain high voltage power lines. Extreme caution must be used when working in the right of way.”
F. If fifteen volts (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 PEF’s right-of-way.
L. Ground elevation must not be changed more than two feet (2') 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 PEF Construction Inspector will be assigned to verify the terms of the agreement and to coordinate requirements by PEF 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 PEF's Construction Inspector are to be paid by the Pipeline Company. PEF's Construction Inspector shall be notified fourteen (14) days prior to the commencement of construction within PEF'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 PEF's Construction Inspector regarding any damages to PEF'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 PEF 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 PEF with a certificate on PEF Form 908-404(s) or equivalent acceptable to PEF, 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 PEF.
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 PEF 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 PEF or the public is injured in the course of work being performed under the provisions of this Agreement, the Pipeline Company shall first notify PEF’s Transmission Area Maintenance Engineer at (800) 700-8744 and if unable to reach, contact PEF’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. PEF’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 PEF's Transmission Maintenance Engineer regarding any damages to PEF'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 PEF’s right-of-way, provided that the Pipeline Company gives PEF written notice a minimum of thirty (30) days in advance of the planned removal. PEF shall not be obligated to refund any amounts received from Pipeline Company. Should it be necessary, in the sole judgment of PEF, for the pipeline to be relocated or removed, PEF shall notify the Pipeline Company of the changes which PEF deems necessary, and the Pipeline Company agrees to make such changes, at the Pipeline Company's sole expense. PEF 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 PEF, 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 PEF 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 PEF, 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 PEF 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 PEF’s Encroachment Agent. Future pipelines shall require a minimum of a twenty-five foot (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 PEF’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 PEF three (3) complete sets of As-Built Drawings, sealed by a registered surveyor, noting the location of the Pipeline Company’s facilities and PEF’s nearest structures.
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