ML20095A602
| ML20095A602 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 08/09/1984 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20095A580 | List: |
| References | |
| NUDOCS 8408210520 | |
| Download: ML20095A602 (46) | |
Text
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CALCULATION SHEET PH LADELPHI A CLI.CTRIC CO. NAME . 65-' __ L.OCATION / / /'I FN /I/i D A T E .s. If'h )'. S H E E T N O. l.:ig"1.L_ SUDJECT JOD/C A NO. l ~ f n .a.\ < 'O ,u. te- r file.; & .ce , . l e.f { << l.c.r e
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Attachment 4 Raceway Separation Test Program - Discussion of Assumed Failure Modes, Procedure, and Test Results I. Reason For Test Program Limerick has committed to meet the requirements of Regulatory Guide 1.75 as stated in Section 8.1.6.1.14 of the Limerick FSAR. The Regulatory Guide endorses IEEE Standard 384-1974 which allows the use of testing and analysis to justify separation distances less than the standard distances given in the IEEE standard. The Limerick raceway design, which was completed in 1974, was based on the standard separation distances contained in IEEE 384-74. Where lesser separation was required due to physical constraints, tray covers were to be installed. Subsequent additions to the initial raceway design were required to support plant enhancements and Regulatory requirements. Due to physical constraints, some of these additions resulted in lesser separation distances than the standard separation distances contained in IEEE 384-1974. The majority of the cases where the standard raceway separation distances could not be maintained involved separation between enclosed raceway (conduit or gutter) and cable tray. In cases where the standard separation distances between cable trays could not be maintained, the majority of these involved separation between Class 1E cable tray and non-Class lE cable tray. In order to provide justification for these lorser separation distances, Philadelphia Electric Co., in accordance with Section 5.1.1.2 of IEEE 384-1974, completed a raceway separation test program. The test program methodology and results are documented in Wyle Test Report No. 46960-3. II. Description of the Limerick Raceway System The Limerick raceway system design has the following salient features:
- 1. The raceway system consists of:
a) cable tray - open ladder design b) enclosed raceway - conduit and gutter
- 2. Redundant Class lE cables are routed in redundant Class lE raceway. Non-Class lE cables are routed in Non-Class lE raceway. Non-Class lE cables are not routed within Class lE raceway. Limerick does not have associated circuits either by electrical connection or by proximity.
f 4
- 3. The power sources for cables routed in cable trays or gutters are as follows; a) 480 Vac from load centers to motor control centers b) 480 Vac from motor control centers to 480 Vac loads c) 125/250 Vdc from distribution busses to loads d) Control and instrumentation (120 Vac and lower) -
- 4. The power sources for cables routed in Conduit are as follows; a) 13kV power b) 4.16kV power c) 2.3kV power d) All power sources shown for cable trays and gutter
- 5. There are very few cases where cables larger, than #4/0 AWG are routed in cable tray. The power sources for cables larger than #4/0 AWG routed in cable tray fall into categories 3a and 3c above. Because cables larger than
#4/0 AWG can be subjected to up to 3500A based upon the failure mode assumptions, their failure is expected to have much more severe consequences than the failure of the~ vast
-majority of cables which are #4/0 AWG or smaller and which have power sources in categories 3b and 3d. For this reason, the Limerick raceway separation test program did not test cables larger than #4/0 AWG in cable trays. For those cases in the plant where cables larger than #4/0 AWG are routed in cable tray, the standard separation distances given in IEEE Standard 384-1981 are met or cable tray covers are installed.
III. Identification of Failure Modes In order to perform a test program to verify the adequacy of the raceway separation criteria, it was necessary to define the worst case electrical failure that could be postulated to occur internal to a raceway. Previous testing conducted by Philadelphia Electric Company for internal panel control wiring separation (Report No. 48503) showed that the heating. effects of sustained overcurrent en a wire had the greatest impact on adjacent wires. A review of the raceway separation test programs conducted by the industry which postulated high magnitude, short time duration fault currents showed that this type of failure mode had little effect on adjacent cables. The short time duration of this type of failure caused little, or no heating effects on adjacent - cables. We have concluded that the sustained overcurrent condition on a cable has much more impact on cables in adjacent raceway, and a much higher probability of initiating a raceway fire than the high magnitude, short time duration current condition.
To verify that a cable fault within a tray does not present as limiting a case as the sustained overcurrent failure, we also reviewed our experience with communicating cable faults; that is, the effects of a fault on those cables which are in proximity to the cable failure. Our experience which includes an industry survey shows that for voltages of 13kV and below, cable failures in manholes which cause a failure of adjacent cables are rare. Much of our experience is with distribution voltages of 4kV and 13kV. These voltage levels and their associated high fault currents have a much higher energy capacity to damage adjacent cables than the 480 volt cables contained in the Limerick cable tray system. There have also been several instances at Limerick in which 480V faults have occurred within Motor Control Center Compartments. In all cases, the adjacent control wiring, which was within 9" inches of the fault, was discolored but remained functional. Based on the above experience, we have concluded that cable failures within a cable tray will have less impact on cables in adjacent cable trays than the sustained overcurrent condition which is the basis for our test program. IV. Test Program Assumptions The Limerick raceway separation test program was based on the following failure mode assumptions;
- 1. The cable or equipment in the circuit develops a fault that is not cleared due to the postulated failure of the primary overcurrent protective device.
- 2. The fault current level is just below the long-term trip setpoint of the next higher level overcurrent device so that the fault is not cleared.
- 3. The impedance of the fault adjusts itself automatically to maintain the fault current magnitude at a constant level as the resistance of the wire increases due to heating, thereby maximizing heat output from the fault i
cable.
- 4. There are no other loads on the same circuit which would cause the next higher level overcurrent device to trip.
V. Selection of Test Current Level and Cable Size The fault current magnitude of 660A used in the test program was based on the failure mode assumptions discussed above. This assumes that an overcurrent condition occurs on a cable between a 480Vac motor control center and a 480Vac load. The primary overcurrent protective device which is the molded case breaker at the motor control center is assumed to fail to trip.
i The next higher level overcurrent device is the load center breaker. The fault current is assumed to be just below the
; long-term trip setpoint of the load center breaker which is !
600A. Since the load center breakers have solid state overcurrent trip devices which have a tolerance of 10%, the j 660A fault current value was selected. This current value t was used for all tests involving cables in cable tray or gutter and was also used for tests involving cables of size
#4/0 AWG or smaller in conduit.
In order to select the size cable to be used for tests involving cables routed in tray or gutter, tests were performed to determine which size cable when energized with 660A would deliver the most intense temperature rise for the longest duration to adjacent cables. The Configuration #1 tests of the Test Program showed that the 3/c #2/0 AWG cable was the worst case cable. The Limerick Motor control Centers contain Westinghouse molded case breakers which provide both overload and short circuit protection. The Limerick Load Centers contain I-T-E K600S breakers with
! solid state trip devices. The solid state trip devices provide increased accuracy and repeatability over conventional trip devices. The load center breakers provide both long and short time overcurrent and instantences short circuit protection. All Load Center and Class IE Motor Control Center breakers are tested on a periodic basis. These breakers are tested and maintained at least once every 60 . months, thereby assuring that the probability of two over-current devices in series failing coincidently is extremely small.
! For cables larger than #4/0'AWG in conduit, the fault current magnitude was selected as 3500A. Thic fault current magnitude is based on an overcurrent condition occurring on a 480 volt feed from a load center to a motor control center given the failure of the load center breaker to operate. Three 1/C 750 Kemil cables were chosen as the fault cables
- for those tests involving cables routed within conduit and energized with 3500A. This is the largest size cable used inside areas of the plant containing equipment important to l- safety' and based on the magnitude of the fault current'
{ applied, will generate the most heat. The failure conditions which resulted from the cable sizes and fault currents selected above encompass the conditions i- which can result from failures in categories 4a, b, and c
- . because of the high speed relaying on these systems and the high fault current availability. These features will cause either backup relaying operation or rapid cable failure, thereby preventing long term heat generation. ,
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__ . __ . .. ._ _ _ . m_ f . . e VI. Description of Test Procedure The raceway separation test program included testing of the i following raceway configurations: , 1) Horizontal cable tray to horizontal cable tray
- (vertically stacked)
- 2) Horizontal cable tray to vertical cable tray (riser)
- 3) Cable tray to gutter
- 4) Cable tray to conduit
- 5) Gutter to conduit
- 6) Conduit to conduit
- 7) Dropout cable (cable routed in free air) to cable tray
- 8) Dropout cable to gutter
- 9) Dropout cable to conduit The procedure used in conducting the tests was as follows;
- 1) The fault cable was installed in the raceway in the location that would transfer the most heat to an adjacent raceway.
- 2) The target cables were installed in the adjacent raceway in the worst case position with respect to the fault cable.
- 3) Pre-test Insulation Resistance and High Potential Tests were performed on the target cables.
- 4) Target cables were energized with 100 % rated current at 480Vac for the duration of the test.
- 5) The fault cable was energized with the pre-determined fault current of 660A or 3500A, depending on test
- i. configuration.
- 6) The fault cable remained energized with fault current until either the fault cable open-circuited or until the temperature on the adjacent target cables stabilized or decreased.
- 7) Post-Test Insulation Resistage tests with an 4 acceptance criteria of 1.6x10.n. at 500Vdc and 2200Vac f
High Potential Tests, each conducted for one minute,
; were performed to determine the functionality of the target cables.
.. ./
- 8) During the tests, selected temperature readings were recorded on the target cables, fault cable, and raceway.
- 9) The target cable voltages and currents and the fault cable current were monitored continuously during the test.
VII. Test Results i The salient test results with regard to establishing the Limerick raceway separation criteria are as follows:
- 1) Cables size #4/0 AWG and smaller when energized with 660A and routed in open cable tray did not ignite.
Cables were tested in both horizontal and vertical tray configurations and did not ignite in any case. Because the faulted cables did not ignite, configurations with 1" vertical separation between cable trays and zero separation between cable tray and enclosed raceway were tested successfully. These test results provided the bases for the cable tray separation criteria contained in Section 2.0 of Drawing 8031-E-1406. (Attachment 2).
- 2) The test results showed that no separation was required between an enclosed raceway and another enclosed raceway or cable tray when the enclosed raceway contains cables which are #4/0 or smaller.
- 3) The test results showed that 1" separation between an enclosed raceway and another enclosed raceway or cable tray is required when the enclosed raceway contains cables larger than #4/0 AWG.
The results discussed in 2. and 3. provide the bases for the enclosed raceway separation criteria contained in Section 2.0 of Drawing 8031-E-1406. (Attachment 2).
- 4) The test results showed that faulted cables routed within conduit will ignite. This result is the basis for the requirement in Section 2.0 of Drawing 8031-E-1406 for sealing conduits which contain power cables.
Wyle Test Report #46960-3 completely describes the Raceway Separation Test Program and the results. The Design Analysis transmitted as Attachment 3 provides the analysis and justification for the raceway separation criteria contained in Section 2.0 of 8031-E-1406. '
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. ktTAc4WEAT M No N4E.
LGS FSAR g % og ,
- e. Type Tests I
LGS penetration assembly prototype tests conform to IEEE 317-1972. IEEE 317-1976 as amended by the Guide contains the following requirements, which were not considered for LGS penetration Gssembly prototype tests:
- 1. Specified sequence of required tests
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2. Impulse withstand test on medium-voltage power conductors
, ; ._ 3.. Partial-discharge.(corona) test -
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- 4. ..
Cycling and aging test as related to shipping, storage, welding, and thermal cycling 5. Seismic tests in accordance with IEEE 344-1975 8.1.6.1.13 Regulatory Guide 1.73, " Qualification Tests of Electric Valve Operators Installed Inside the Containment of Nuclear Power Plants" (1/74) Selection of electric valve operators for use inside the containment is in compliance with Regulatory Guide 1.73. The electric valve operators for service inside the containment are tested in Regulatory accordance Guide 1.73. with IEEE 382-1972, as modified by The tests consist of aging, seismic, and accident or other special environmental requirements. Test parameters are discussed in Section 3.11.2. 8.1.6.1.14 Regulatory Guide 1.75, " Physical Independence of Electric System" (9/78) The requirements of Regulatory Guide 1.75 are met, except as l discussed and clarified below. The Regulatory Guide endorses the IEEE 384-1974, "IEEE Trial-Use Standard Criteria for Separation
'of Class 1E Equipment and Circuits,". subject to the additions and l clarifications delineated in Section C of the guide.
- a. General Separation Criteria
- 1. Required Separation Electrical equipment and wiring for the engineered safeguard system and the reactor protection system (RPS) are segregated into separated channels / divisions as shown in Tables 7.1-4, 7.1-5, 7.1-6 and 8.1-1, so that no single credible event
( Rev. 15, 12/82 8.1-14
No cuaAAE.. LGS FSAR
- is capable of disabling sufficient equipment to prevent reactor shutdown, removal of decay heat i
from the core, containment if there is an accident.or isolation The of the primary engineered safeguard system and RPS are separated _- from each.other, and each is.further separated into 4 four; channelsr/ divisions; r, Separation requirements capply to. control _and instrument: power and m o ti ve power for all systems concerned. The degree of hazards in a particular area. separation required varies with the poten
,-Arrangement v m. - c no : locally] rand /or2 prot.ectiverbarriers ensure that
- system redundant and/orportions RPS. of.the engineered safeguardgenerated forc The arrangement of wiring is designed to eliminate, insofar as is practicable, all potential for fire danage to cables and to separate the engineered safeguard or RPS channels / divisions so that fire in one division does not propagate to another division.
( , Equipmenf and circuits requiring separation are identified on docume distinctive manner. nts and drawings in a
- 2. M'ethods of Separation The separation of circuits and equipment is achieved by separate safety class structures, distance, or barriers, or combination thereof.
3. Compatibility with Mechanical Systems The separation of Class 1E circuits and equipment ensures that the required independence is not compromised by the failure of mechanical systems served by the Class IE systems. For example, Class lE circuits are routed and/or protected so that the failure of related mechanical equipment of one redundant system cannot disable Class IE circuits the otherorredundant equipment systemessential (s). to the operation of 4. Associated Circuits Associated circuits are not uniquely identified as such. g .These circuits, with -the exception of item
.(c),below',are treated and identified as Class lE up to.an. isolation. device and are isolated on a 8.1-15
i t . , NO OMW .
. LGS FSAR IA M OQOf .
LOCA signal, with the following clarifications and I exceptions: (a) When relays and other devices are used as isolation devices between Class 1E and non-
- .e . ' , - Class 1E circuits, the 6-inch separation
-requirement atuthe devic ~eiterminals is not maintained-in Sections 4,6.1.accordance"with'IEEE~384-1974
- ~
(b) All non-Class 1E 4 kV motor loads that are fed from Class IE buses are treated and identified
..as Class 1Eveven beyond-the-isolation device.
Howeverr- these' l'oads. arentripped in the event
, of racewayt. a-IDCA , and' are Touted in dedicated Class IE They do not become associated with any othec Class IE division.
(c) The public address and fire alarm panel that feeds non-Class Class IE bus. This~1E loads is fed from a panel is not tripped on LOCA, because intentional disconnection of the fire alarm system is a violation of the National Fire Code and is considered unacceptable for plant safety. The' distribution transformer and panel are qualified and seismically supported to i Class 1E criteria. from this panel are run in conduits thatAll circuits originating contain only PA~and fire alarm system wiring. All circuits originating from this panel are protected in the panel. by thermal magnetic circuit breakers In addition, the 440V feed to the transformer is protected by a molded case circuitofbreaker Each in the breakers these circuit motor control center. is qualified and purchased as Class 1E; therefore, two Class IE isolation devices exist between the non-Class IE public address and fire alarm circuits and the Class IE 440V bus. (d) Several non-Class 1E drywell cooler fan motors located inside the drywell are fed from a Class Class 1E. IE bus, and the cabling is routed as are fed fromThe non-Class a Class IE deIEbus, RPS/UPS and theinverters cabling is routed non-Class IE. Two Class 1E circuit breakers are provided for redundant overcurrent circuits. protection on each of these These breakers provide isolation between bus and thewill non-Class IE loadtested be periodically and the in Class 1E i Rev. 32, 05/84 8.1-16
1 FS-G1s _ ,S. DRAET accordance with Technical Specification requirements. These loads are not
>^automatically isolated on a LOCA signal.
- 5. Non-Class 1E Circuits Non-Class IE circuits are separated from Class IE circuits by the separation requirements specified in Section 8.1.6.1.14.b. Non-Class IE 440 volt loads that centers useare fed from a shunt tripClass deviceIEonmotor control the motor control LOCA center signal.- breaker to isolate the circuit on a These circuits are treated.as ~
non-Class 1E from'~the load and control devicesmotor control or they center to are routed asthe Class 1E only in the division with which they are associated,
- b. Specific Separation Criteria
- 1. Cables and Raceways The minimum separation distances for raceways are given in paragraphs 4 and 5 below. The following general criteria apply to all cable installations:
9 S u se. n c+sss, tes @ v M T CWS \G oJELcDeceAT DEAllC.E5 ASLE. FA.o J toe.o Ia SE.4E5 ER WMTlN 8ETd6EA C- W \E Pbh So0Let.$ Mp pSog-k h 11F-N9TttAM FA TMeoA . 8.1-16a Rev. 32, 05/84
No %E c LGS FSAR Id50 OMGf, (a) Cable splices Cable splices are in raceways onl are prohibited. or suitable fittings.y made in manholes, Splices in cablesboxes passing through the containment penetration assemblies next are made in terminal boxes located to the assemblies. lb) Cables and raceways are flame retardant. (c) l The design basis is that the cable trays are notcontrol for filled above the side rails. Tray fill
, w._
T- --
' cable s traysg.. cable trays and instr.umentationis-5 the --
cerossisectional area of;the cable ~ in ~the tray ~ will not exceed 50 percent of the available cross sectional area of the tray, and 40 percent power maximum cables. for cable trays containing If tray fill exceeds the above-stated justified ~and documented. maximum fill, tray fill is 2. Identification of Non-PGCC Cables and Raceways Exposed Class 1E-raceways are identified in a ( distinct exceed 15 andfeet. permanent manner at intervals not to In addition also and/or floors. identified where they pa,ss through wallsthese raceways are before the installation of their cables. Class 1E raceways l are Cables installed.in cable trays are identified at intervals not exceeding 5 feet, to facilitate to the separation criteria. initial verification that the installat These cable identifications are applied before or during their installation. Class 1E cables are identified by a permanent drawings or cable schedule. marker at each end in accordance Color coding is used to meet the above requirements and to distinguish between Class 1E systems and between Class 1E and non-Class 1E systems. The coding precludes the need to consult any reference and between Class IE and non-Class IE systems'. m diagram identity at each point of termination. Pane ( s 8.1-17 Rev. 22, 07/83
f5-6h 1 ' i
- LGS FSAR DRAFT 3.
Identification of PGCC Cables and Raceways Refer to Item 6 below. 4.
. Cable Spreading Room / Control Complex The control com spreading: room,and plexauxiliary consists of contfoi room, cable
~ equipment-room. The auxiliary equipment room mainly consists of relay panels and terminal cabinets integrated-with g
3 module-type floor sections, with lateral and longitudinal ducts that are used as~ raceways and O bar r iera m Thi si mod u l e-type . a ss embl9";%h i cit is the PGCC, d is? covered separately ~ iniparagraph 6. {
- The control complex does not contain high-energ equipment (such as switchgear and transformers)yor M
o potential sources of missiles or pipe whip and is 7 not used for storing flammable materials. Circuits in the cable spreading room and control ! } room are limited to control functions, instrument functions, and those power supply circuits and
/g facilities serving the control room. : Power supply 4 j, feeders to distribution panels are installed in
&2 g enclosed raceways that qualify.as barriers. The ,
circuits passing through the cable spreading room ( vj d, are limited to 120/208 Y ac and 250 V de, except jg for lighting feeder circuits in the cable spreading area. p The lighting feeder circuits are 277 V ac, g but are lighting. routed in conduits used explicitly for The minimum separation distance between the f redundant Class 1E cable trays is 1 foot horizontally and 3 feet vertically. g horizontal separation is not possible,Where lesser a 1-foot l y separation is justified by test and analysis or one 9 y of the following barrier arrangements is used: a flame retardant barrier is placed between the 3 redundant cable trays and extends 1 foot above the g trays or to the ceiling; or cables ;f ;.;t. ch:: : Udici:icr are installed in totally enclosed l raceways up to a point where thei! f;;t
- ;2irrz::: 1: ;;;e4wt
- . Where cable" trays of redundant channel / divisions must be stacked one above the other with less than 3 feet vertical spacing, lesser separation is justified by test and analysis or one of the following barrier arrangements is used:.a flame retardant barrier is placed between i
the trays and extended to 6 inches <beyond each side of the tray system or to the wall; or the cables ef- ( Rev. 22, 07/83 8.1-18
Wtc% DRAET (AE DE f tcE.0 By LGS FS M14iM0M 464LTicA<. SEpa,g wa ~ om):25 ::f t:2::t ch: WsTssSco gy rgg7 g s- gg
.1,'fi . ici .. are installed in
-2 f;;t ;;; tic 1 ::;;;;ti;r ::ict;. totally enclosed Where a raceways to a a g o i 4 crossover of one tray over another carrying a j u redundant channel / division is made, and minimum
[ G.4
% fire:barriersrare? installed between theStraysvert.ica
%y extending:a minimum of 1+ foot beyond4the. crossing
; 9 [s travN Separation requirements between" Class 1E and T1%
r-6 L{p non-Class.1E circuits are the same as for f 6. separation 40$T4Figeof, redundant Sy.. TESL MD. channel Ar4 4/divisionspexcspy-
%5--- WHESE a ( g0 y.
0
.:e LIn1 general)AaysinimumJseparation ofOfainch is u l
Tsaint'ainsd between redundant.enclosedrraceways and yg,,>gi g g between aceways Class 1E and non-Class 1E enclosed ' f 4}o 2 eh i; 3__{33;,,}{gg l_(( { _ q gg:gj{ g ((_g g r. J sMEIse:FI:~:::EI::EiseerWW6sfuss mec ([ bWop$ [k 4ssse. p g # 1 uxno3 is aostienso sv Test Ano Msv-vs .s. The separation provided between a totally enclosed qg 2 i raceway and a cable tray is the same as that gW-- provided between redundant cable trays except 4 hah.
"h:2 the tet:11; :::1:2:2 :::::::y :::tci :
012 : 12 ::iler, ::17
- inch ::; :: tic ~i: ::q ir:2 ..
f::: th: Clrt: !! tr:7 LMER.E _ J0STiFIEP ey TEST AWp @N.ysts,LE.55ER. SmPAEA-reed is (f 5. " General Plant Areas ggy In plant areas where potential hazards such as missiles and pipe whip are excluded, the separation L h distance between redundant Class 1E cable trays is 3 feet between trays separated horizontally, physical barrier exists between trays. If a if no horizontal separation of less than 3 feet exists, alternate methods as stated in paragraph 4 above are required. Vertical stacking of trays is avoided wherever possible; however, where cable trays of redundant channel / divisions are stacked, a vertical separation distance of 5 feet is required, or alternate methods as stated in paragraph 4 above are required. Where a crossover of one tray over another carrying a redundant channel / division is made, and the minimum vertical separation distance %)::: g g 9- as determined by test and analysis cannot be M maintained, Afire barriers are installed between the trays extending a minimum of 3 feet beyond the { y crossing tray /cK. CAST.45 ACS l@STM.A.Ep @ E0C.L,oSEO 2 "
' ?cewy EycpE4p 94 A Midlu M c5 Separation requirements between Class 1E and non-3 FEET BEY Class 1E circuits are the same as for separation of
( ) redundant channel / divisions) eg.w.r( dHE.pt -JoStiftEO b fTf.ST W AN ArVfSI5 8.1-19 Rev. 22, 07/83
,. _ ~ - -- -
7;_ _q S D s A !:'r eJ $ P tpSEtri Q y S.I-if ~ 9 Tae st0tuoq seas #aica itta.aise, sarassa espa w i ct+s55 I E. N eooT CABLES og. SErQEM C L A65 IE. l Ae4> Mo e-C4-As.s IE. DR.orocT CA6LES LS 1 Foor l Hoe. tao 4 tad Ar49 3 f: oaf \/EET(CAL & CEPT led T+yose. cases W4E/E. LESSEA. SiEPA F AT M M5 66EM l JOSTt v:t Ep By TEsf MD A0%Ys#5 , DieoPouf CAcuiEs Ar-E DEF:4Ep /h5 My CA5LE. LG,.%TM Act 1%ctsp G i Tw As W Ay . La cases Qaer-e. tee N t a t u.o g Serv.-eriM c.9.sE6 Jos-r rseo sy TEs7 A* M4ys;3 mor St Mscr, DemeoOy cN5tss hF-t. MhffEp dYrH- h Ft2lER.4M5 .5L EEdlAh To
~f'HE. PoicT WHEF.e. TrW_ NidlMori Sepag_x T, M (E rreg4A
\5 AW-4tE4Ep .
'IME. Te3T (% sot.1's % AMA4.,ysis M A, Msg h WYLE. LABE*xtbF ntcg 4Ea TEST @EportT ND -
'-{ 69 (.o -3 AF-E. ~4e. SAstr Fee._ THE. Less E.st f.p e e d & g A 'w; pg.deouT CAST.e_ SeFAF-ATid
%E.pe_e.setep wsP% e_#em 4 Mo 9.THE EEPAR.A<tted CgerEE.4A DERJVEp F9o% -rats.
AeWLysis Aft _ Co A TA. 4Ep e 4 C# Map _4.tt. W1,r34 6 o3 ( ( Mob j SEcried A O .
FS- 6'? t LGS FSAR 3
.w The separation requirements between totally '
T enclosed raceways and between a totally enclosed lrbEEtT_, raceway and Paragraph 4 above, a cable tray are the same as stated in
" d ): J
.~
Eeutron.:monitoringisystem3 7 cables located.in the
- ; i
- pile room undtri thesRPV:.~areJex ceptions! t3 EHi'ese" .sub - -
- + ~.and3separationrouted.41r eg&teriai cThesercables. arer.sesiar' ated wherever poss. flexible ~ conduit in this room"'-
ible, but they may touch wherever necessary due-to spatial limitation. different NMS divisions in this room are. flexible notCables of
,conduiti bundled togetbege.whererthey'
= . h " r :'- --
are: not zin - 6. Power Generation Control Complex (PGCC) Detailed design basis, description, and safety evaluation aspects for the PGCC system are documented its amendments. and presented in GE Topical Repo The separation criteria used for the internal panel wiring of the PGCC are given in Section 8.1. 6 : 1.- 14. b. 9.
- 7. Power Supply
( (a) Standby Diesel-Generators Standby diesel-generators are housed in Categorycompartments separate I structure. within a seismic The auxiliaries and local controls same compartment of each as theunit unitare housed they serve.in the (b) DC System I Redundant Class 1E batteries and their associated chargers are located in separate compartments within a seismic Category I structure. an individual ventilation duct to a commonEach batte exhaust plenum. Two redundant Class lE axial flow exhaust fans service the common exhaust ductwork. Also, the battery chargers of redundant load groups are physically separated in accordance with 1.75. the requirements of Regulatory Guide ( Rev. 29, 02/84 8.1-20
r-S-61 DRAET Iasser @, eg. a.t - r= h x,Aiuas seesw,4 s o , ,_., 3M R-End AeMT class t6 0ftorouT C A B LE s ota_ M GLASS lE. ps4p Ao A - c1 Ass- lE PFLcPo0T IS CA.BLE.3
.3 Feet. Pes-taoPTA' MD 5 F-EET V'earv.At_ &cepy i c -Teose case.s thse.e_ Lesseg s@MA'Ted MS S e s c 4 0 s- r i F i s! a By 755T Ado MALYsts . 'EU case;.s @ c e.e. T n si % o n S eg e -t o n c o -r m A J o s' Tiff E p By Test A4 Wysis CArJ4cT BE.
Meg ig_ep0T Castes AF-E 18-APNP @ Tid A R Be.g.q z-*,ss 5tsevic g, ro T m Pb, a use "T@E. M t 4 ,s.Q M 5 EFAW_wno d Cf_ifECIA. is Aca4Edeo. l l 1 l
FS -eH LGS FSAR , DBAFT, -m (c) AC Distribution System All redundant Class 1E switchgear, motor control centers and distribution panels are physically separ,ated in accordance with Regulatory Guide 1.75.
..~ _
- 8. _ Penetrations
~
~
Redundant Class 1E containment electrical penetrations.are dispersed around the circumference of the containment and are physically separated in 1* ., ~ , O accordance_with:the requirements of. Sect. ion 5.5 of
~
IEEE '384 1'974"J'In general, non-Cl~ ass. -1E circuits are not r(outed in ' penetrations containing Class 1E circuits. I are routed in Where the same Class penetration, 1E and non-Class 1E circuits separation is ~ l , l FtS6E 4 Lass -fir;yr;;f sleeving up to the penetrationmaintained by routi feedthrough. i not routed through common feedthroughs. Class 1E and non-Cla The feedthrough A4V steel casing forms the separation barrier between Class IE and non-Class.1E feedthroughs. . Two' divisions of Class 1E ( thermocouple wiring are also routed through the suppression maintain separation. pool penetration in this manner to 9. Control Room and Auxiliary Equipment Room Panels The main control panels are located in a control room within a seismic Category I structure. The control room is protected from, and does not contain, high-energy equipment such as switchgear, transformers, rotating equipment, or potential sources of missiles or pipe whip. No single control panel includes wiring essential to the protective function of two systems that are following: to each other, except as allowed by the redundant (a) Floor-to-panel fireproof barriers are provided between adjacent panels of different channels / divisions. (b) Penetration of separation barriers within a l subdivided panel is permitted, provided that such penetrations are sealed or otherwise treated so that an electrical fire could not reasonably be expected to propagate from one 8.1-21 Rev. 22, 07/83 i
- . No CRAt%E. .
iWo ot4LY, LGS FSAR l { section to the other and destroy the protective function. (c) When locating manual control switches of redundant divisions on separate panels is considered prohibitively (or unduly) restrictive to manual operation of equipment, the switches are located on the same' panel, provided that no credible single event in the panel can disable both sets of redundant manual or automatic controls. Wherever wirini"ofutwo divisions' exists in a single as follows:panel section, separation is maintained (1) A minimum of 6 inches spatial separation is maintained between Class 1E wiring of different divisions. (2) A minimum of 6 inches spatial separation is maintained Class between Class 1E and non-1E wiring. (3) Where the above spatial separation cannot be maintained, one or a combination of g the following shall be provided: x o One of the divisions of wiring is enclosed to the pointinwhere flexible thesteel aboveconduit separation is achieved. o Hygrade Thermoflex 1200 fiberglass sleeving is installed on control and instrumentation wiring to the point where the above separation is achieved. o One-inch spatial separation is maintained between Class 1E and non-Class 1E wiring where the non-Class 1E wiring is secured with stainless steel cable ties, and between redundant Class 1E wiring where both the divisions of wiring ar6 secured with stainless steel cable ties. Rev. 22, 07/83 8.1-22
.=.
No C.R1Po3/,4., InSpo eh1LY, LGS FSAR (4) The following exceptions to the above separation criteria are allowed: o Relays Used as Isolation Devices: Non-Class 1E wires terminating on contacts.of. isolation relays are not
~ " ' ~ ~
~
separated:from other wires in the same panel,. regardless of safety _ status or division. They are not bundled with Class 1E. wires.
~~ ,
3.,1 e
,-h'on.a josuhn.isolationfrelay;are -
not separated ~from each othe'r at the relay terminals. They are routed away from the relay to achieve the distance. separation within a minimum required o Where Class 1E wiring is located above 410 AWG or smaller non-Class 1Eprovided. be wiring, one-inch separation will o ( In the main stop steam isolation valve and turbine valve terminal boxes, separation is not maintained within these boxes as any postulated failure in the box will not prevent the reactor protection system from performing function. its intended safety o Other exceptions to the above criteria may be allowed. These exceptior.3 will be analyzed to consider the magnitude and duration of a credible high impedance faulted l condition and will be documented. I (5) Class 1E components of different divisions, but which are not redundant, installed on a common panel are separated by one inch or a flame retardant barrier.
- Non-Class 1E components are separated by one from inch Classor 1Eacomponents.
flame retardant barrier Class 1E components that serve redundant systems are separated by 6 inche retardant barrier, e.g.,,s core or a spray flameA ( from core spray B. Suitable flame retardant barriers include panel steel, 8.1-23 Rev. 22, 07/83
LGS FSAR DR[FY " Hygrade Thermoflex 1200 fiberglass and/or ' the device metal casing. Exceptions to these component separation criteria are allowed in cases where it has been shown that a sustained overcurrent through the device-will not cause the ignition of
~ that*tfeVi'ce. Indicating lampsyesd
'i~solstion" relays are_ specific examples of this: e~rc~e~ption. Mm p.geyggg, w remd (d) Redundant Class IE cables entering the cont #
-~
panel enclosure meet the requirements describedXIn 3 tem -(c) above. - 7:ppwp - (e) Panel internal' Class IE wiring is not color
~
coded. Wires are marked with their respective connection diagram identity at each point of termination. The connection diagram denotes the separation division for each cable. Cables run inten banded every' thefeet. floor sections are color
- 10. Instrument Racks and Panels:
j Redundant Class IE instruments and instrument racks are separated so that any design basis event will ( ! not cause the failure of more than one division of ~ instrumentation needed to mitigate the effects of that event. Physical separation of redundant circuits and devices is provided within each instrument panel as I discussed in paragraph 9 above. 11. Sensors and Sensor-to-Process Connections Redundant Class 1E sensors and their connections to the process system have been sufficiently separated so that the functional capability of the protection system is maintained despite any single design basis event or result therefrom, including the secondary effects of design basis events, such as pipe whip, steam release, radiation, missiles, or flooding. Where practicable, redundant Class 1E sensors and process connecting lines are brought out at widely divergent points, using large components, such as pressure vessels or pipes, as protective barriers. Where necessary, additional barriers are provided to protect.against damage from a credible common cause. ( Rev. 22, 07/83 8.1-24
ll77AC.HP1EA>T R) 2.0 Raceway and Dropout Cable Separt. tion l 2.1 Raceway Separation 2 .1 General Criteria 1 red a. this section defines racew Safeguard Systen (ESS), hactor Protection Systern f non-ESS raceways. A raceway is defined as con & i ical cable tray. Dese separation criteria apply only riteria
- v. e.
failures within the raceways. For mechanical haza Fbr fire MM $7 of the separation review prograun apply (fpec. 8031-G-13). hazards, the results of the safe shutdcwn analysis in the FPER apply. Bus ducts shall be considered as non-ESS raceways, and as such, the same separation criteria shall apply. H e separation criteria for junction boxes shall be the sarne as applicable to the associated condJits for ESS, RPS, or non-Class lE. For purposes of this section, Class lE raceway is defined as ESS & RPS raceways. Ibn-Class lE I Enclosed raceways raceway is defined as non-ESS and non-RPS raceways. are cond. tits, gutters, junction boxes and cable trays with ucp and bottan covers,
- b. De raceways have been designed to meet the separation require-ments for Class lE raceways. All expmed Class lE raceways shall be installed as shcun on the drawings except as allowed by Specification 8031-G-17, General Project Requirerrents for Field Change ?btices, and Paragraph 1.le of this document.
- c. Separate raceways are provided for the Class lE cables by channels,
- d. Class lE raceways shall be run in Class I seisnic structures except when ifrpractical.
- e. De criteria in paragraph 2.1 and 2.2 also apply between Unit 1 & 2 raceways. However, if the thit 1 & 2 raceways are of the sane channel (e.g. lA, 2A,1B & 2B,1C & 2C, ID & 2D,1W & 2W,1X & 2X, 1Y & 2Y,12 & 22) and the raceway terminates at a ccrrunon device or equipncnt, separation between Unit 1 & 2 raceways may not be required.
Any such cases shall be submitted to Project Engineering for review l and approval via FCR. f. For ease of cable installation in the cable spreading roan, control f ' roon & auxiliary equiprent rocin, it is desirable to treintain a minimum vertical separation of l'-3" between botton of top tray and top of lower tray for non-ESS trays or ESS trays of the same channel when trore than one level of tray is required. 4 .,. 4. re . t [(5. 's.
$[$9 b $0QW u, a n
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pousa uusaieu esmonates ovation units i a e CONDUff & CAtLE ftAY NOff5. E-1406 g Div. SYM9C45 4 DETAll5 Sheet 2.l
! ^ ^ "./
3 g. For ease of cable installation in the general plant area, it is desirable to unintain a mininun vertical separation of 2'-6" g between bottm of tcp tray and top of lower tray for non-ESS trays or ESS trays of the sane channel when nore
~a level of tray is required.
e N hchh. Cable tray vertical separation is measured frm t . ((Df the tcp tray to the top of the siderail of the bot y g g -Y Fbr horizontal separation of cable trays, see s .. w -4.,g & 2.2.9. 1 Wh,M . Seperation shall be naintained between vendor raceways and betwee vendor and Bechtel raceways. shall be per E-1406, paragraph 2.3.C.1 to 2.3.C.5. Separation between cha Wndor docurents shall be reviewed to determine separation between raceways,
- j. If separation of raceways described in Sections 2.1.2.3 and 2.1.2.4 cannotofbethe bottm met, solid alminun covers shall be installed at tcp and trays. mere minimum separation cannot be met, covers shall extend a minimum of 1 ft, beyond on both sides of an intersec-tion in the cable spreading rom and the auxiliary equipTent rom and 3 f t. in the general plant area. n e installation of the covers on each tray shall be docunented via FCR for incorporation onto the layout drawings. Cable trays which are fire proofed with 'Ihermo-Lag per E-1406, paragraph 8, do not require covers or any separation.
Details of tray cover installation are shown on sheets
- k. For definition of power cables see E-1412. Pax l.22, 2.2.9&2.29 2.1.2 Raceway Separation Distances 2.1. 2.1 Ibceway Separation Criteria:
h e design basis or criteria for the preparation of electrical layout drawings and installation of Class lE raceways are as follows: a) In the cable spreading rocrn, control rom, and auxiliary equignent rocm, the minimum separation requirenents betseen Class lE cable trays cf different channels or between Class 1E and non-Class lE cable trays shall be one foot horizontally and three feet verti-cally. A minimum separation of 1 inch shall be maintained between Class 1E enclosed raceways of different channels and between Class lE and non-Class lE enclosed raceways. 'Ihe separation criteria between totally enclosed raceway and cable tray is the sane as the separation criteria between cable trays, except the separatico criteria between non-Class IE enclosed raceway and Class lE cable tray is 1 inch. Q-;s , i 4 '- 7* m l f , ,W f,f ~
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CONDuff a CAtLE 7tAY NOTES. SYutC45 4 DETA45 Sheet 2.1 g
s b) In the general plant area, the minimm separation requirments between Class lE cable tray of different channels or between Class5 1Efeetand non-Class lE cable trays shall be 3 feet horizontally i.
" and vertically. 'Ihe separation requir ts between encicsed raceways and between enclosed raceway , tray are the same as stated in paragraph 2.1.2.la.
VlN,,, .,s .
+
3& A e c) If the separation criteria stated in Sections .
.it fd 2.1.2.lb cannot be met, the separation critier M,in 'ES . . .A and
{ en-e
-[ sections 2.1.2.2,- 2.1.2.3 and 2.1.2.4 have been justified by test and shall be applied.
2.1.2.2 Enclosed Raceways: Enclmed raceways separation shall be installed in accordance with the following requirenents:
- a. Between Class lE Raceways of Different Channels:
Raceway Configuration Mininun Separation Cable Size Batween Raceways
*l) Class lE Raceways f 44/0 in both None Ibquired of Different Channels
- 2) Class lE Raceways > #4/0 in either 1 in.
of Different Channels
- Exception: GE-furnished RPS SI'IS cables, which are enclosed in flexible netallic condait, are routed in ESS raceways. 'Ihis is allmed because.
a) RPS SI'IS cables are in enclosed raceways. b) It has been determined that none of the RPS SITS cables is redundant to any of the ESS cables located in the same raceway,
- b. Between Class IE and ibn< lass lE Raceways:
Raceway Configuration Mininun Separation Cable Size Between Raceways
- 1) Class lE & non-Class Class IE (any size) None Required lE Raceways Non-Class lE (f#4/0)
- 2) Class IE & non-Class Class IE (any size) 1 in.
lE Raceways p[p-.{.f, W .i .{, Non-Class IE (> #4/0) n hkM ^ h..jfl n.. A %th4 XMcArr. PCArIof 4 Afst?mo GK 4:- W A*M Af mA sus sp o so Mew /s m e ra r Avangp .-
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If 1 inch Separr. tion Criteria cannot be maintained between flexible con &its, or beteen flexible con &its and rigid steel or Drr, as required, one of the follcwing alternates shall be used at the engineer's discretion:
%;f
~
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- 1. Conduit Hangers, Crouse Hinds Cat. # P#O t M ir equal;
~ bolted together with nuts, bolts and washers ,.. separation
.m '
Vg4 2. . -. M Pipe clamps, Unistrut Cat #P1112 through P1124, ftir legaal; or 7J
'-* concbit hangers, Crcuse Hinds Cat. 8MWO thru MIf9 d 'aqual,
/
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- attached to either side or both sides of back-to-back unistrut P3301, length as required for Isrgest concbit.
l 3. ~ l t t
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- LovtsYnllT-P3500 CR P1000 - 6" MAX, P3000
- / MUM h i l
FLEX I I CONDUlT MAWGER CRouSE N/NDS CATd l MWD THRU MW3 p - NO CONNECTI Of EQUAL L BETWEEN FLEX TRUT)
'e
-_. PLAN OR ELEVATION (ALTERNATE 3) l l
- 4. Unistrut P3301, length as required, attached to cable tray siderail Flex concbit may run in either direction. Flex conduit not to be attached to P3301, 2.1.2.3 Enclosed Raceways and Cable Trays:
The separation criteria between enclosed raceways and cable trays shall be as follows: l a. I f;j. ;;'.' ~
f. Between Class lE Enclosed Raceway and Class IE Cable Tray of Different Channel:
- i. ~
> E' '
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. ~ . ,
l! Minimtun Separation Raceway Configuraticn Cable Size Between Raceways
- 1) Class IE Ehc1csed Raceway (f 44/0) :
Raceway & Tray of Tray 11:7Rt Different mannel ($ #4/0) ide 1 in. 37.'G.'~Jf. , p enclosed y."#[U jU*r ?dn any Kf,;, Y. c fi'the tray. Mininun Separation Raceway Configuration Cable Size Between Raceways
- 2) Class lE Ehclosed Raceway (> #4/0) 1 in. ; provide 1 in.
l Raceway & Tray of Tray (3 #4/0) min. air gao between Dif ferent Channel the encloced raceway and any cable in the tray.
- 3) Class lE Ehclosed Raceway (any size) 5 f t. vertical and Raceway & Tray of Tray (> #4/0) 3 ft. horizontal Different Gannel
- b. Between Class lE Enclosed Raceway and Non-Class lE Cable Tray:
t Minimum Separation Raceway Configuratico Cable Size Between Raceways
- 1) Class lE Ehclosed Raceway (any size) None Required; Raceway & non- Tray (f #4/0) however provide Class lE Cable Tray 1 in. min. air gap between the enclosed raceway and any cable in the tray
- 2) Class lE Ehclosed Raceway (any size) 5 f t. vertical and Raceway & non-Class Tray (> #4/0) 3 f t. horizontal lE Cable Tray c) Between Non-Class lE Enclosed Raceway and Class lE Cable Tray:
- ip -
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- DIV. CONDUIT & CAtlE ftAY NOTES, E-1406 g SYMeots & DETAILS Sheer 2. 2. 3 M 9A A /A
_ . _ , _ _ . . - . . ~ _ _ _ . , , . _ _ _ _ . , . . _ . . . _ . - - _ _ _ _ . - . , _ _ _ _ _ _ . , - _ . . . _ _ _ _ _ _ _ _ _ _ _ _ _ . ~ _ . . _ _ _ . _ _ _ _ _ _ _ _
1 Minimtzn Separation
- Raceway Configuration Cable Size Between Raceway
- ,t .
Raceway (< 64/0) ;
- 1) Non-Class lE Ehclosed Raceway and Class lE Tray (any size) ide gg ~
g:,.,..-- Cable Tray .
. air gap
[fy k_e enclosed brid any
;;;c L@ cable in the tray.
Q 4 y,
- 2) Non-Class lE Enclosed Raceway (> 64/0) 1 in.; provide 1 Raceway and Class lE Tray (any size) in. min. air gap Cable tray between the enclosed raceway and any cable
! in the tray.
- d. Between the Open Ends of Conduits & Cable Tray The minimtzn Separation between the open end of a conduit which contains cable that originate fran the power bus of switchgear, load centers, motor control centers, AC and DC Distribution Panels, and a Class lE Cable Tray shall be as follows:
'Ihe open end of the conduit shall be separated fran the Clas lE tray (or redundant Class lE tray in the case of a Class lE conduit) be at least 5 f t. vertically & 3 f t horizontally when the open end of the conduit is beneath the tray. If the open end of the conduit is above the tray, 5' ft. vertical and 1 ft. horizontal separation is required. If this separation cannot be met, the end of the conduit must be sealed with a minimun of 1 inch of Kaowool and 1" of PR615 coated with a flane-retardant mastic coating (VIMISCO or OUELPYRE) or 2 inches of silicone foam.
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* **'" *** ** 8031 PMILADSLPMIA ELECTRIC COMPANY POWER utsSR60st estienAftGBS STATIOGI UselTS 1 & 3 DIV. CoHDUIT 4 CA8LETRAY v4oTES. E-1406 j P-125/9 ST M6oLS ( Df. TAIL 5 SMET 2.2.4
i I { 2.1.2.4 Cable Trays:
'Ihe following separation criteria between cable trays shall apply:
7-IK a. Between Class 1E Cable Trays of Different Channe ,, g g J,g. Cable Size Mininzn Separation ays
?2 '
- 1) < 44/0 (in both)
~
3 in. vertical and tal e N. (See detail below fo lel trays) l , ,. m m . >.
- 2) > 44/0(in either or both) 5 f t. vertical and 3 f t. horizontal
- b. Between Class 1E and ibn-Class lE Cable 'IYays:
Cable Size Minimtzn Separation Between Raceways
- 1) Any size (Class 1E) 3 in. vertical and none horizontal
< #4/0 (non-Class 1E) (See detai1 belcw for parallel trays)
- 2) Any size (Class lE) 5 f t. vert cal and 3 f t. horizontal
> #4/0 (non-Class lE)
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Sheet 2.2.5 SYM90LS 4 DETAll$ 0-904 /d
2.2 tropout Cable separation: A dropout cable as defined herein is any cable length not in a di raceway. The maxinun allowable unsupported length of any dropout cable is 36 inches n minal. The maxim m allowable W equal g.; ..s..
. to the minimtrn bending radius of the cable. Any @le
;pl 7' which does not meet the above criteria nust be or y j gk to applying the following separation criteria. 'lb
)gj separation distances shown, the field nust take in WWImunt
- W.* . maximtun cable movanents.
w m. s. 2.2.1 Separation Between Dropout Cables
- a. Ebr dropout cables frm tray and/or gutter, if all cables involved are sizes < # 4/0 AW, provide 6 inches separation between Class lE c51es of different divisions or between Class lE and non-Class lE cables.
If any of the dropout cables is > #4/0 AW , then the following criteria apply: Dropout Cable > #4/0 Separation Required Class lE 5 ft, vertical frm redundant 3 ft. horizontal Class 1E cable Class lE 5 ft. vertical 3 f t. horizontal)(IEFrm CableNon-Class ># 4/0 Class lE 6 inches - frm Non-Class lE Cable < # 4/0 Non-Class lE 5 ft. vertical frm all class 3 ft. horizontal IE cables
- b. Fbr dropout cables frm conduits the following criteria apply:
- 1) Fbr those dropout cables, frm conduits, which do not originate at the power buses of switchgear, load centers, MCC's, AC Prd DC Distribution Panels, the sarne criteria as stated in 2.2.1.a apply.
- 2) Ebr those dropout cables, frm conduits, which do originate at the power buses of swgr, load centers, e
MCC's, AC and DC Distribution panels, do either of the fly following: e.. v. .. u.~ ..
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PMILADELPMIA ELECTRIC COMPANY '**** 8031 POWER _.
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g,sesSt,40E GS808AAfitBS STAfleet USHTS 1 & 3 ******"' l '"- COUOUnT4 cAeLE TRAY MOTES E. t406 P-125/9 M t. S ( D E L5 l S heet 2 2 (o
a) Seal the end of the conduit with g minimtsn of 1 inch of Kaowool and 1" of PR615fcoat with a flane-retardant mastic coating (VIMI YRE) or 2" of Silicone foam. 'Ihe criteria shall then be applied. IF t% _ _ ~ .:' i ~ N-mM@k E y*,6
' b) Treat the conduit dropout cable as if it were >
# 4/0 and provide separation as per the criteria of 2.2.1.a.
2.2.2 Separation between Dropout Cables & Omn Cable Tray
'Ihe following separation Criteria apply between dropout cables and open cable trays:
- a. Ebr dropout cables fran another tray and/or gutter, if the dropout cables & the cables in the tray are all
< #4/0; no separation is required ftun the dropout to the tray side rails, but provide (6) six inches of separation between Class lE cables of different divisions or between Class lE and non-Class IE cables. If the dropout cable is > #4/0 AW3 or if the cable tray contains a cable > #4/0, then the following criteria apply:
Dropout Cables) #4/0 Separation Required l Class 1E 5 f t. vertical ( fran redundant 3 f t horizontalf Class IE Tray Class lE 6 inches (0" siderail distance fran non-lE cable l tray) Non-Class lE 5 ft. vertical ) fran class ( 3 ft. horizontal) lE tr#9 Cable Tray Cable Separation Required
> #4/0 Class 1E Tray 5 f t. vertical ( fran redundant
.c 3 f t. horizontalT channel dropout Ik ::
- c. .;.
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*""" EE POWER PMILADELPMIA ELECTRIC COMPANY "*"* E utsamecet esiegaAtlege 8?Afleet U0087814 3 '"**'**"*
DIV. COMPUIT 4.CASLE TRAY MOTES 2 -3 E- M06 S YM8of S g D6 TAILS sheet 2.2.7 / l P-125/9
dCcrit'd), l Cdbleattayr Cable > #4/0 ' separation asquired Class lE Tray 6 inches (0" siderailAistance frm
$ -43 < #4/0 w W.] Non-Class lE Tray ,.y k.[pYh[ 5 ft. vertical ? *1ama lE p* < w....
. 3 f t. horizonta1I -- -(A "
) b. Ebr Dropout Cables frm Cbnduits the following criteria apply:
- 1) Ebr those dropout Cables, fromconduits, which do not originate at the power buses of swgr, load centers, MCC's, AC & DC distribution panels, the same criteria as stated in2 2.2.a apply.
- 2) Ebr those dropout cables, frm conduits, which do originate at the power buses of Swgr, load centers, MCC's, AC and DC Distribution Panels, do either of the followirg:
a) Seal the end of the conduit with a mininun of 1" of Kaowool & 1" PR615 coat with a flame-retardant Mastic (VIMISCO or QUELPYRE) or 2" silicone foam. 'Ihe criteria of2.2.2.a shall be applied. or b) Treat the conduit dropout cable as if it were > #4/0 and provide separation as per the criteria of2,2.2.a. 2.2.3 Separation Between Dropout cables and Enclosed Raceway:
'Ihe following separation criteria apply between dropout cables and enclosed raceway:
- a. Ebr Dropout cables frm tray &/or gutter, if all cables involved are < #4/0, no separation is required between the dropout cable and the enclosed raceway. If the dropout cable is > #4/0 or if the enclosed raceway contains a cable > #4/0, then the following criteria shall apply:
N.. f,. ; - 4%' g ,, . . . 9%y 2 . A A I A 4}tils4 135UED roe CN/STR.IAK0ERFCRE/0.0066 fr . I see. seTe MUEBeBS GK Jhs SV %L esas seemmes et ages M" E'at a gD am
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- 9031 POWER DIV-utssetes esssenAftese eTAvices usette e a a ****'**"* ! ""
34 coNDulT 4 CABl.E TRAY wOTES E-l406 P-125/8 SYPlooLS & DETAl'S SHEET 2.2.7.1 0
Dropout cabl9 > 44/0 l separation Required Class IE 5 ft. vertical fran redundant w 3 f t. horizontal)(Class lE enclosed raom er y.,
, Class IE 4%a w 2 Separation from Q ';1E
) . .r~. . enclosed raceway W(r --
1 q h[ 1 Non-Class IE :f;' P: 5 f t. vertical ( f d t'1kss IE 3 ft. horizontalT enclosed raceway. Enclosed Raceway Cable >#4/0 Separatim required Class IE Enclosed Ra way 1 inch )(dropout cablefrom redundant Clas
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Class IE Ehclosed Ib Separation fra Non-Class IE Raceway Dropout Cable ' Non-Class lE Enclosed Raceway 1 inch i from Class IE dropout i i
; cable b.
Fbr dropout cables fra conduits the following criteria apply: 1) Pbr dropout cables, fromconduits, which do not originate at power buses of swgr, load centers, MCC's, AC & DC j distribution apply. panels, the sane criteria as stated in 2.2.3.a
- 2) !
! Ebr dropout cables, frm conduits, which do originate at : I the power buses of swgr, load centers, MCC's, AC & DC j i distribution panels, do either of the following , 5 a. e l Seal the end of the conduit with a minimun of 1" Kaowool & 1" of PR615 coat with a flame-retardant mastic coating (VIMISCO or 00EU)YRE) or 2" of silicone be foam. 'Ihe criteria of 2.2.3.a shall then applied. or i
- b. Treat the conduit dropout cable as if it were > l i
94/0 and provide separation as per the criteria ' of Section 2.2.3.a. , y ~ j s A l A )4 Ak %1}@ IS$U@ FOR CONSTR. /MCOMFCE [/O.0056 es,e GK , TA" 4WI-
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1 *== == f:&f POWER PMILADELPMIA ELECTRIC COMPANY #**** UI usesA60s SSNSAAftNG STAflow Uml?S t & 3 ****'** ** "* 2 -C 32y, CONDuli & CABLE TRAT NOTES $ E.1406
$YuSOLS 4 DETAILS g SHEET 2. 2. 7.2 I
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2.2.41nmstances where the mininun separation above cannot be achieved, wrap the dropout cables per the following: he Dropout Configuraticn Cable to be Wrapped Sepap Af+==ptierLRequired
~:MW b*h A. lE cable < #10 h:
to either cable
;,. lE cable < #10
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- "W B. lE cable > #10 to lE cable > #10 1" lE cable 1 #10 C. lE cable > #10 to both cables lE cable > #10 1"
D. tbn-lE cable 1 #10 to either cable lE cable (any size) 0" E. Non-lE cable > 410 to Non-lE cable lE cable (any size) 1" These wrapping criteria also apply when achieving the required separation between dropout cables and raceways. 2.2.5 Wrapping Instructions a. Wrap the dropout cables frcm the point where they begin to bend prior to existing the raceway to the point where the mininun separation criteria can be achieved. Apply Thermo-flex 1200 fiberglass tape in a single layer of a 50% over-lap. Cover the fiberglass tape with a single layer of 3M No. 69 glass tape with a 50% overlap. Apply a stainless steel tyrap over each end of the glass tape to secure tape to cable. l
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I , Ak 'h7lb4 _ es,e ISSUED FOR COUSTE /MCORPFCe E/O.0056 G K. - fe GF 14g/ ase.sme e, en s yg;7 ene a ,% ***= s""" I- - PHILADSLPMIA ELECTRIC COMPANY "'"* E POWER O DIV utsament SteestAtme sfattet UGHTS 1 & 3 ******* ! "* ( P-125/8 COMPUIT4 CABLE TRAY MOTES E-14 06 SYM BOLS ( DE.TAJLS S HEET 2.2.7,3 0
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,e ,* P TRAY COVER /NSTALLATION CRITERIA
.MACCWA Y CONFIGUP.ATION MACEWAY -
prs / GNAT /o#
&TfNf g0TES 8
2 F7(3 FT. /N THE 1, IF l T
- l. ) ^ m~ E &g GE*.ERAL PLANT) REVIE NED AFTER
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, ,D gg,,,,jg gy. REYOND THE ME RAPHS 2.l.2.)
AND l E
'B df Otther e( orn M TRAY M B0 ARE T TRAY COVERS l
3 3S?> 1: . < Y, SIDE RNL.3
/8 "##~N .m 7
/N7E (OR LY THE TRAY LE (N). C7D# Y$) WHICH CONTAIN y n 4/O CABLE SHALL BE g 3 g (3 g ,y 7pg COVERED. WHEN THESE TRAYS A
- N <,
*CC'OOf , QEMERAL PLANT) COVERED THEY SHALL COMPLY n
Ol g^M- AE70ND TNE EDGE WITH THE SEPARATION CRITERIA
~ m N j$ mon'- Of TRAY ON BOTH
] * . _. D2, _ Class .rE. S/oES or TNE TRAY FOR ENCLOSED RACEWAYS AS STATED IN PARAGRAPHS 2.l.2.2 wrERSECT/0N. AND 2.1.2.3.
x EXCEPTION:IF BOTH CLASS IE J~1
~h r
pi AND NON -CLASS lE (N) TRAYS HAVE CABLES > "4/0, INSTALL
- o. ,
y O'1 l SAME AS @ TOP AND BOTTOM TRAY COVERS [- ,f ON THE NON-CLASS IE TRAY a f7 1[
- " ONLY. THIS EXCEPTION DOES NOT APPLY TO CONFIG.[41,f31&fE1 O S ARE 2 n (3 n /N TNE
' Q~ h 'E REOLIM9AMT CHAMMELS,0 R.
GENEML PLANT) MD THE EDGES ' 7 , BT 4 , EITHER(OR 6 siogg coww/T V a ru or 7pg SEE NOTE 1 ' IS 840M-CLASS cowouiThest 1E(M'). .ture4.5afroN . 4 ,. 5 3 d*'E A S E SEE NOTE I
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l O Ch b ARE L c
& n REDLlHDAMT CHAdMElS, 1 FT.(3 FT IN THE GENERAL PLANT)
BEmMD TNE EDGLS u4 g lS, y o N SEE NOTE 1 oc T#E C0wou/TS t L. f[" h CL.hsS iE. av Bory sioEs of THE TRAY 4CONDil/W s%
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- TRAY COVER /NSTALLATA)Al CRITERIA AACKWA Y EXTEND covFcuRArrow MAcEWAY WM NOTES DesGNATIOV l 2 \
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M 8 ^RE Ji- l 1 r"';n . , . q"w '. q' REDdWIWJT . C i - f Cggg HAWWELS, ggg. SAME AS 3 MW - l, 3VvN 6
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