ML20008D782
| ML20008D782 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 01/13/1969 |
| From: | CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | |
| References | |
| NUDOCS 8007300686 | |
| Download: ML20008D782 (20) | |
Text
1 APPENDIX SA SEPARATION CRITERIA AND ADMINISTRATIVE PROCEDURE FOR INSTALLATION OF s_,/ 32 CLASS lE EQUIPMENT AND CIRCUITS 1.0 GENERAL SEPARATION CRITERIA 1.1 Required Separation Separation is provided to maintain the independence of suf-ficient numbers of circuits and equipment se that the protec-tive functions required during and following any design basis
, event is accomplished. The degree of separation req' tired varies with the potential hazards in a particular area.
1.2 Equipment and Circuits Requiring Separation Equipt.snt and circuits requiring separation have been determined and delineated in the plant design and are identified on documents and drawings through circuit designations and 32 drawing notes and details.
1.3 Methods of Separation The separation of circuits and equipment is achieved by safety 7g class structures, distance, or barriers, or combinations g
'/
) thereof. In general, locating redundant circuits and equip-ment in separate safety class structures affords a greater degree of assurance that a single event will not affect re-dundant syste=s. Therefore, this method of separation is used whenever practicable and its use does not conflict with other safety objectives.
1.4 Co=patibility with Mechanical Systems The separation of Class lE circuits and equipment is such that the required independence will not be compromised by the failure of =echanical systems served by the Class lE systems.
For exa=ple, Class 1E circuits are routed or protected such that failure of related mechanical equipment of one redundant system cannot disable Class lE circuits or equip =ent essential to the operation of the other redundant system. Protection of electrical sysce=s has been included in ongoing high energy 3; pipe break studies.
1.5 Associated Circuits Associated circuits co= ply with one of the following:
- a. They are uniquely identified as such or as Class 1E and
,, are color-coded the same as, and remain with, or are 32 (x/ ) p O
4007300' f (lF 8A-1 O()^o5'p.c7 Amendment No. 3, 3/77
l
,-s separated the same as, those Class lE circuits with which
( they are associated. They are subj ect to all requirements N
placed on Class 1E circuits such as cable derating, environmental qualification, flame retardance, splicing restrictions, and raceway fill.
- b. They are in accordance with 1.5a from the Class lE equipment up to and including an isolation device.
Beyond the isolation device a circuit is not subject to the requirements of this document provided it does not again become associated with a Class lE system.
(An isolation device is defined as a device in a circuit which prevents malfunctions in one section of a circuit from causing unacceptable influences in other sections of the circuit or other circuits. Examples of isolation devices are power circuit breakers actuated by accident signals, operation amplifiers, and relays.)
- c. They will be analyzed to demonstrate that Class 1E circuits are not degraded below an acceptable level. Circuits within the NSSS scope of supply are also tested in conjunction with the analysis to demonstrate that Class lE circuits are not degraded below an acceptable level.
Illustration fN- Balance of Plant - Where non-Class ~1E circuits internal to control panels and other electric equipment enclosures (i.e., switchgear, motor control centers, etc) are not physically separated from Class lE circuits by a minimum of 6 inches or a barrier and 32 analysis demonstrates the adequacy of this lesser
-separation, these circuits which would become associated by definition are treated and identified as non-Class lE. Typical circuits include alarm and computer inputs that originate at a Class 1E device where electrical isolation is provided (i.e. , separate contacts of a switch, relay, etc); but where, a minimum 6 inch physical separation is unattainable
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or the device structural characteristics preclude installation of a barrier.
Nuclear Steam Supply System - See Section 2.8 NOTE: Preferred power supply circuits-from the transmission network, and'those similar power supply circuits from the unit generator which become associated circuits solely by their connection to the Class lE distribution system input terminals,
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C /- 003/i(3
-SA-2 Amendment No. 32 3/77
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are exempt from the requirements cf Section 1.5. This exception O is limited and does not extend to other requirements such as those of General Design Criterion 17.
1.6 Non-Class lE Circuits 1.6.1 The non-Class lE circuits are separated from Class lE circuits by the mini =um separation requirements specified in Section 2.1.3, 2.1.4, or 2.6.2, or they become associated circuits and comply with Section 1.5.
1.6.2 The non-Class lE circuits are separated from associated circuits by the minimum separation requirements specified in Section 2.1.3, 2.1.4, or 2.6.2 or the effects of lesser separation between the non-Class lE circuits and the associated circuits are analyzed to demonstrate that the Class lE circuits are not degraded below an acceptable level or they become associated circuits and comply with Section 1.5.
Circuits within the NSSS scope of supply are also tested in conjunction with the analysis to demonstrate that Class 1E circuits are not degraded below an acceptable lev.11.
1.7 Documentation of Analyses 4
Analyses and tests performed in accordance with 1.Sc and 1.6.2 32 7(% /'~'y will be submitted as part of the Final Safety Analysis Report and will identify those circuits installed in accordance with these sections. Refer to Figures BA-1 through 8A-3 and Tables SA-1 through 8A-3 for examples showing typical types of balance of plant circuits involved and the basic method of analysis. For circuits within the NSSS scope of supply, refer to Section 2.8 for a discussion of analyses and tests.
2.0 SPECIFIC SEPARATION CRITERIA 2.1 Cables and Raceways 2.1.1 General s
2.1.1.1 The routing of Class lE circuits and location of equipment served by these Class lE circuits are reviewed for exposure to potential hazards such as high-pressure piping, missiles, flammable material, 'and flooding. All wiring is flame retardant.
Where exposure to high-pressure piping 32 or missiles exists, a minimum separation i
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.,1 - 00M7 BA-3 Amendment No. 32 3/77'
N of 20 feet or the equivalent of a 6 inch
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(,, thick reinforced concrete wall is provided 32 such that the independence of redundant Class 1E systems is maintained at an acceptable level. The separation of Class 1E circuits and equipment makes effective use of features inherent in the plant design such as using different rooms or opposite sides of rooms or areas of safety class structures except where opposite sidea of rooms or areas are confined or otherwise incapable of dissipating 32 the heat generated from a fire.
2.1.1.2 In those areas where the damage potential is limited to failures or faults internal to the electrical equipment or circuits, separation is achieved by separate rooms 32 of safety class structures, distance, or barriers, or a combination thereof.
2.1.1.3 The minimum separation distances specified in 2.1.3 and 2.1.4 are based on open ventilated trays of either the ladder or trough type as defined in NEMA vel-1971, Cable Tray Systems. Where these distances
,(h are used to provide. adequate physical
<() separation:
- a. Cable splices in raceways are prohibited.
- b. Cables and raceways involved are 32 flame retardant.
- c. Cable trays are not filled above the ,
side rails. Raceway fill criteria are given in Section 3.3.
- d. Hazards are limited to failures or faults internal to the electric equipment or cables.
2.1.2 Identification Exposed Class lE raceways are marked in a distinct permanent manner at intervals not to exceed 15 feet and at points of entry to and exit from enclosed i areas. Embedded conduit and duct banks are marked at points of entry and exit only. Class 1E raceways are marked prior to the installation of their cables.
32 i To facilitate initial verification that the instal-lation is in conformance with the separation criteria, O,
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00:qs 8A-4 Ame dment No. 32 3/77
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cables installed in these raceways are =arked in a manner of sufficient durability and, except for cables touted in conduit and duct banks, at intervals ,,
not to exceed 15 feet throughout the exposed cable J-length and at points of entry to and frc= enclosed areas (i.e. , fire barriers , floors , walls , etc) .
Cables routed exclusively in conduit and duct banks are =arked at points of entry and exit only. These cable markings are applied prior to or during installation.
Class lE cables are identified by a per=anent marker at each end in accordance with the design drawings or circuit schedule. The method of identification precludes the need to consult any reference material 32 to distinguish between Class lE and non-Class lE circuits, between non-Class lE circuits associated with different redundant Class lE syste=s, and between redundant Class lE systa=s. Identification details are described in Section 3.2.
2.1.3 Cable Spreading Area and Main Control Room The cable spreading areas are the spaces adjacent to the control roo= where instrumentation and control fr x cables converge prior to antering the control,
'T' ~ ' ,) termination, or instrunent panels .. Redundant cable spreading areas are utilized. The cable spreading 32 areas and main control room do not contain high energy equipment such as switchgear, transformers ,
rotating equipment, or potential sources of =issiles or pipe whip and are not used for storing fla==able materials. Circuits in the cable spreading areas and main control room are limited to control functions ,
instrument functions, and those power supply circuits and facilities serving the control room and instrument systems. Power supply feeders to instrenent and control room distribution panels are installed in enclosed raceways that qualify as barriers.
Where the conditions of 2.1.1.3 are met, the =inimum separation distance between redundant Class lE cable trays is 1 foot between trays separated hori entally and 3 feet between trays separated vertically.
32 Note: 'doricontal separation is measured from the side rail of one tray to the side rail of the adjactat tray. Vertical separation is measured from the botto= of the top tray to the top of the side rail of the bottom
,s tray (see also Section 2.1.4) .
i (v) 00349 8A-5 Amendment No. 32 3/77
Where ter=ination arrange =ents preclude =rintaining
). .he mini =u= separation distance, the redundant circuits are run in enclosed raceways that qualify as barriers or other barriers are provided between redundant circuits. The =inimum distance between these redundant enclosed raccways and between barriers and raceways is 1 inch. Where barriers are utill:ed for horizontal separation, they extend at least 1 f oot above the top of the tray (or to the ceiling) and where utilized for vertical separation, they extend at least 6 inches from both sides of the tray (or to a wall) .
When trays cross each other, mini =u= vertical separation between redundant cable trays is 3 feet. In areas !
where 3 foot separation is unattainable, one of the I following is implemented.
- a. Installation of a suitable barrier. The mini- 32 mu= separation between the barrier and the top tray is 1 inch. The barrier extends 1 foot minimum from each side of the top tray and 1 i f oot minimum from each side of the bottom tray.
- b. Use of enclosed raceways that qualify as barriers.
The minimum separation between the enclosed
, s raceway and the top tray is 1 inch. The raceway i
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is enclosed for a sini=um of 1 foot from each side of the top tray. 1 2.1.4 General Plant Areas In plant areas from which potential hazards such as !
missiles, external fires and pipe whip are excluded I and the conditions of 2.1.1.3 are met, the minimum separation distance between redundant cable trays is 3 feet between trays separated horizontally and 5 feet between trays separated vertically. If, in addition, high energy electric equipment such as switchgear, transformers and rotating equipment is excluded and power cables are installed in enclosed raceways that qualify as barriers, or there are no power cables, the =ini=um separation distance is as specified in 2.1.3.
Where plant arrangements preclude maintaining the mini =u= separation distance, the redundant circuits are run in solid enclosed raceways which qualify as barriers or other barriers are provided between redundant circuits. The minimum distance between
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8A-6 Amendment No. 32 3/77
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these redundant enclosed raceways and between barriers .
'IN/s) and raceways is 1 inch. Where barriers are utilized for horizontal separation, they extend at least 1 f oot above the top of the tray (or to the ceiling) l and where utilized for vertical separation, they ,
1 extend at least 6 inches fro = both sides of the tray (or to the wall if it exists). i When trays cross each other, =inimum vertical separa-tion between redundant cable trays is 5 feet. In areas where 5 foot separation is unattainable, one 3'
of the following is irplemented.
- a. Installation of a suitable barrier. The mini-mus separation between the barrier and the top tray is 1 inch. The barrier extends 1 foot minimum from each side of the top tray and 3 feet mini =um from each side of the bottom tray. l b.
l; Use of enclosed raceways that qualify as barriers.
The minimu= separation between the enclosed l raceway and the top tray in 1 inch. The raceway is enclosed for a minimu= of 1 foot fro = each side of the top tray.
2.2 Standby Power Supply t'Q
\(,,/ 2.2.1 Standby Generating Units Redundant Class lE standby generating units are located in separate rooms of the Seismic Categor7 32 I diesel generator building. Each room is served by an independent air supply.
2.2.2 Auxiliaries and Local Controls The auxiliaries and local controls for redundant standby generating units are located in the ;
same room as the unit they service. i 32 1
2.3 DC System 2.3.1 Batteries Redundant Class .:E batteries are placed in separate rooms of the Seismic Category I auxiliary building. Each room is served by an independent ventilation system. 32
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8A-7 Amendment No. 32 3/77
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2.3.2 Battery Chargers v Battery chargers for redundant Class lE batteries are placed in separate rooms of the Seismic Category I auxiliary building. These rooms are separate from those housing the Class lE batteries.
2.4 Distribution System 2.4.1 Switchgear, Load Centers, and Motor Control Centers Redundant Class lE switchgear, load. centers , and motor control centers are placed in separate rocms of the Seismic Category I auxiliary building . Separate ventilation systems, supplied from the corresponding redundant load group, are provided for each room.
2.4.2 Distribution Panels 32 Redundant Class lE distribution panels are physically separated by distance, harriers, or placement in separate roo=s of safety class structures, or a combination thereof.
2.5 Containment Electrical Penetrations
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(("~I N- Two~ separate penetration areas are provided to facilitate all cables passing through the containment wall. One area is solely dedicated for cables of separation groups A, C, and N and the other for cables of separation groups B, D, cnd N. Separation groups are defined in Section 3.2.1.
Each penetration assembly contains only cables of the same separation group. Penetration assemblies facilitating redundant Class lE cables meet the minimum physical separation requirements for cables and raceways given in Section 2.1.4 2.6 Main Control Boards 2.6.1 Location and Arranement The main control boards are located in a control room within the Seismic Category I auxiliary ,
building. The control room protects from and contains no high energy equipment such as switchgear, transformers, rotating equipment, or potential sources of missiles or pipe whip.
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2.6.2 Internal Separation The minimum separation distance between redundant Class lE equipnent and circuits internal to the control board is 6 inches. In the event the above separation distances are not =aintained, barriers are installed between redundant Class 1E equipment and wiring.
2.6.3 Internal Wiring Identification Within control boards where more than one separation group is present, wiring is identi-fied by separation group designation, or, if enclosed by conduit the conduit is identified by separation group designation. The =ethod of identification is by color coding and is perfor=ed 32 at a sufficient number of points such that .
distinguishing between redundant Class lE syste=s and between Class lE and non-Class lE systems is readily accomplished. Identifi-cation details are described in Section 3.2.
Within a control board which is associated and identified with only a single separation group, f(N the internal wiring is exclusively associated
\_,/ with the same separation group and, therefore, reqrires no further identification.
2.6.4 Common Terminations Termination of redundant Class lE circuits on a ccanon device is avoided wherever practicable. ,
Where ter=inating at a common device is unavoid-able, the requirements of Section 2.6.2 apply.
2.6.5 Non-Class lE Wiring Non-Class lE wiring not separated from Class lE wiring by the minimum separation distance (deter =ined in Section 2.6.2) or by a barrier is treated as associated circuits in accordance with the requirements of Section 1.5.
2.6.6 Cable Entr: nee Redundant Class lE cables entering the control board enclosure are installed in accordance with the requirements of See 1on 2.1.3.
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001:~7'1 8A-9 Amendment No. 32 3/77 i
m 7g 2.7 Instrument Cabinets (Balance of Plant)
'V The separation requirements of Section 2.6 apply to instrumentation cabinets. In addition, redundant Class lE instruments are located in separate cabinets or compartments of a cabinet.
Where redundant Class lE instruments are located in separate compartments of a single cabinet, the separation requirements of Section 2.1.3 may be unattainable. In these cases where different separation groups approach the same instrument cabinet with less than 1 foot hori-zontal or 3 foot vertical separation, isolation is maintained by installing cables of all but one of the separation groups in conduit, or by installing suitable barriers between separation groups. The barriers installed in lieu of horizontal separation extend from 1 foot below the bottom of the tray to 1 foot above the top of the tray (or to the ceiling). The barrier installed in lieu 3 ',
of vertical separation extends 1 foot beyond each side of the tray system (or to the wall).
Class 1E instrument cabinets, are located in designated areas within Seismic Category I structures. The selection of these areas and the locating of instrument cabinets in r these areas is such that the effects of design basis rf-"3 events will not compromise redundant Class 1E systems.
' ~ ('-) 2.8 Instrument Cabinets (Nuclear Steam Supply System)
LATER 2.9 Sensors and Sensor to Process Connections Redundant Class lE sensors and their corrections to the process system are sufficiently separated such that the functional capability of the protection system is maintained despite any single design basis event or-result therefrom.
Consideration is given to secondary effects of design basis events such as pipe whip, steam release, radiation, missiles, and flooding.
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.8A-10 00"7 5a" Amendment No. 32 3/77
m Large components such as the reactor vessel are considered a suitable barrier if the sensor to process connecting
, ["'s lines are brought out at widely divergent points and
\ ,) routed so as to keep the component between redundant lines. Redundant pressure taps located on opposite sides of large pipe may be considered to be separated by the pipe, but the lines leaving the caps are protected against damage from a credible co= mon cause unless other redundant or diverse instru=entation is provided.
In so=c cases , redundant sensors may share co= mon sensor-to-process connections. In such cases, the sensing lines are separated af ter leaving the sensor-to-process connection 32 and are protected against damage that could result frem a credible common cause.
2.10 Actuated Equioment Locations of Class lE actuated equipment, such as pu=p drive motors and valve operating motors are nor= ally dictated by the location of the driven equipment. The resultant locations of this equipment are reviewed to ensure that separation of redundant Class lE actuated equipment is acceptable.
3.0 SPECIFIC DETAILS f ,- ~s 3.1 Cable Travs il )
In addition to complying with the foregoing criteria, the -
cable trays, where possible, are arranged from top to bottom in the following order:
8kV power SkV power 600V power (load centers) 600V power (MCCs), control cables and digital signal cable Instrumentation and seleccel signal cable 32 3.2 Identification The following method of identification is used to meet the requirements of Section 2.1.2 concerning redundant Class lE syste=s and non-Class LE systems:
Each cable and raceway is given a unique alphanumeric identification and is color. coded to indicate its separation group. This identification provides a =eans of distin-32 guishing a cable or raceway associated with a particular unit, load group, or protection channel. Separation group identification is provided by the following alpha characters:
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8A-ll 32 00,,)a. . dAmendment 3f77 No.
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3.2.1 Seoaration Grouc
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Separation Group A - (Red) A Class lE instru=en-tation, control or power cable / raceway associated with load group 1 or protection system channel A.
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Separation Group 3 - (Green) A Class lE instru-sentation, control, or power cable / raceway associated with load group 2 or protection system channel B.
Separation Group C - (Orange) A Class lE 3' instru:entation or control cable / raceway associated with protection channel C.
Separation Group D - (Blue) A Class lE instru- 3:
. mentation or control cable / raceway associated with protection channel D.
Separation Group E - (Yellow) A Class lE instru=entation control, or power cable / raceway associated with Class lE "cwing" loads (Class lE loads that can be connected either to load 32 group 1 or load group 2 but not both) and Class f(T lE " maintenance spare" loads (Class lE load that
(_,) can be ' connected only to the load group of the load being replaced) . -
Separation Group N - (Black) A non-Class lE instrumentation, control or, power cable / raceway and associated equipment.
Class lE raceways are permanently identified with the separation group color. Within the 32 containment, raceway identifications are stenciled with ink.
There is per=anent color identification on all Class lE cables. Each separation group has its 3; distinguishing color as listed above.
Associated circuits are color coded the same color as the separation group with which they are associated. Identification of associated _,
circuits is provided on design docunents. #-
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8A-12 Amendment No. 32 3/77
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(g 3.3 Cable deratin2 and cable trav fill
<V Current rating and group derating factors of cables are in accordance with the manufacturer's standards which co= ply as a =ini=u=, with IPCEA P-46-426 f or cables in conduit 3:
or ducts, and IPCEA P-54-440 for cables in tray. Cables are installed in trays in confor=ance with their voltage ratings and as described in Section 2.1. Tray fill for power cable is generally li=ited so that the su==ation of the cross-sectional areas of cable does not exceed 307.
of the usable cross-section of a 3 inch deep tray, except where a single layer of cable is to be installed.
Should the fill exceed 30%, review is =ade for each case to ensure the adequacy of the design for both physical fill and derating.
i Conduit fill is in ec=pliance with the provision of i Chapter 9 of the National Electrical Code,1971 edition.
3.4 Isolation Devices l ,
Isolation of Class lE power circuits is provided by a l i
single circuit interrupting device (Class lE circuit breaker) actuated (tripped) under design basis accident conditions by an accident signal (derived fro = the engineered .
safety features actuation systa=) . The accident tripping ' 3:
, f'- s}
, signal is in addition- to any tripping signal. that =ay be derived from fault current or its effects. .
Restoration of power to the load served by the isolation device once disconnected by the accident signal is per=itted by remote-manual-operator action initiated under ad=in-istrative control.
Electrical isolation between non-Class lE and Class lE control and instru=ent circuits is achieved through the use of isolation devices such as relays and operational a=plifiers. Isolation devices are Class lE and are located within Seis=ic Category I structures or areas.
4.0 ADMINISTRATIVE RESPONSIBILITIES AND CONTROLS 4.1 The cable and raceway separation group designation facili-tate and ensure the maintenance of separation in the routing of cables and the connection of control boards and panels. At the time of the cable routing in the design office, the routing engineer checks to ensure that the separation group designation (see Section 3.2) on the cable to be routed is compatible with the raceways it is routed through. Extensive use of co=puter f acilities L.J 8A-13 003!W Amendment No. 32 3/77
s assist.s in ensuring separation. A sorting is provided 1 j for each raceway, which includes each cable in the co=puter progra= and the identification includes the applicable separation group designation. A visual check of these docu=ents is =ade to ensure that only cables of the correct separation group are routed through the appropriate raceway. This is also checked and confir=ed visually by QC personnel. All cables and raceway are installed in accordance with the design drawings and schedules. Color identificiation of raceway and cables assists field personnel in this effort. (See Section 3.2) 4 1
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8A-14 00158 3= ndment so. 32 3/77
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Q CLASS IE ANALOG CIRCUIT TO NON CLASS 1E EQUIPllENT t'
Component Malfunction Effect Remarks
- N* Current Short Circuit Loss of Ammeter & Computer Current XDCR Ratings:
M XDCR Output Open Circuit No Effect on Class lE ckt. Output 0-1 mA r
g .y Terminals Ground Fault No Effect on Class IE ckt. Output Load m y No Effect on Class IE ckt. 0-10k ohms continuous m overload 10 amps
@ Y _..
e--
p Ammeter Short Circuit Loss of Ammeter Input One second overload 250 amps
" No Effect on Class 1E ekt. Surge withstand capability m
g Open Circuit No Effect on Class IE ckt. 2500 Vrms M Ground Fault No Effect on Class 1E ckt.
g
$ 0 g e _ _ _ _ . __ ._..._. . . _ _ _ _ _ . _ _
S Y 0 m n $ y Computer Short Circuit Loss of Computer Input Voltage XDCR Ratings:
i y * $, No Effect on Class 1E ckt. Output 0-1 mA
[ Q p " Open Circuit No Effeet on Class IE ckt. Continuous overload 200Vrms y ,8 Ground Fault Na Effect on Class IE ckt. Surge withstand capability g 1500 Vrms o
@ Cable between Short Circuit No Effect on Class IE ckt. Cable Ratings:
M Control Panel Open Circuit No Effect on Class 1E ckt. Size #16 b & Switchgear Ground Fault No.Effect on Class 1E ekt. Voltage test 3.5 kVac and h
m 10.5 kVdc for 5 minutes without insulation breakdown. Insult y , _ __ _
600V Flame Retardant C M m o QH Cabic between Short Circuit No Effect on Class I'EI ekt. All cables are routed in instrument
".) Control panel Open Circuit No Effect on Class IE ekt. tray L.4 'h & Computer Cround Fault No Effect on Class IE ckt. Maximum voltages that could be C $ impressed on circuits in instrument tray:
h 125Vdc g, 120Vac w0 tR "2*
e
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M g LOW ENERGY DIGITAL CLASS 1E CIRCUIT TO NON CLASS lE EQUIPMENT w Component Malfunction Effect g .
. - Remarks La (D M m Wiring at Control Short Circuit . Initiate Alarm at Low Energy Circuits.
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g Panel Annunciator & Computer Contact Ratings (Inductive):
n Ground rault No Effect on Class 1E ekt. Control Switch - 4 amp G @ 125 Vde; 24 amp G 120 Vac I),
Field Contacts (Relays,
/3 Ekr Aux Contacts, etc.)
Q % Cable between Short Circuit Initiate Alarm at 7 amp 9 125 Vdc Q P, Control Panel & Annunciator & Computer 30 amp @ 120 Vac e a Annunciator 'Cround Fault No Effect on Class IE ckt.' C H
D Panel Open Circuit No Effect on Class IE ckt) able SizeRatings:
- 16
$ ~
i Voltage Test 3.5 kVac 6
$ C$b1e between 'Short Circuit No Effect on Class 1E cktj 10.5 kVdc for 5 minutes e n Annunciator panci . (Computer alarm) without insulation
$- $ & Computer panel tGround Fault No Effect on Class 1E ckt. breakdown. Insulation y en a O I (Computer alarm) 600 V Flame Retardant h $
e o>
- t'8 i
'Open Circuit i
No Effect on Class IE ckt. Cablesare routed in instrument
" tray O Annunciator 'Short Circuit Blown Fuse, Loss of Maximum voltages that could be h Annunciator & Computer impressed on circuits in Instrument s
H . Ground Fault No Effect on Class IE ckt. tray:
Open Circuit No Effect on Class 1E ektJ 125 Vdc d .
I 120 Vac z
o Annunciator output contact z' '
is isolated from input Computer Short Circuit No Effect on Class 1E ekt.
Ground Fault No Effect on Class 1E ekt.
C $ ,0 pen Circuit No Effect on Class IE ckt.
O ~
U M '
@ E Field Contact Short Circuit ! No Effect on Class 1E ckt.
V $ Cround Fault No Effect on Class IE ckt.
$ ] 'Open Circuit No Effect on Class IE ckt.
Cable bet'veen- Short Ciacuit s No Effect'on Class LE ekt<
Z Fleid contact & ' Ground Fault No Effect on Class 1E ekt.
Control panel !O No Effect on Class 1E ckt.
w tJ j' - l pen Circuit
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G/
5 H
t',1 ANALOG CIRCUITS FR0tt CLASS 1E EOUIPflENT TO NON CLASS 1E EQUIPttENT H
m ,
m Component Ifalfunction Effect Remarks -
m to o N Thermocouple Short Circuit Loss of Computer Input Low Energy Circuit m Cable Ground Fault No Effect on Class IE ckt . Cable Ratings:
. E Open Circuit No Effect on Class IE ckt . Size #20
, Voltage test 3.5 kVac and o 2,- 10.5 kVdc for 5 minutes n w without insulation H
- o m breakdown. Insulation 0 0 600V Flame Retardaitt N a Cables routed in instrument y . tray, o n }!aximum voltages that could x >
e be impressed on circuits in fp m o-n n
instrument tray:
" 125 Vdc
@ m 0 120 Vac b
$ o> $
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F2 5 7 Y Rr n U
M E
c Y
W [5 W A um "zP ;
I w I w
A
y CLASS 1E BUS
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OVERCURRENT RELAYS
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CLASS 1E SYSTEM CT -
CT -
'M, C >- CLASS 1E
, TEST SW SW GR AMP (SEE CETAILA)
XDCR 4C 3C 2C 1C i NON-CLASS 1 E /
AMP 7 CLASS LE NoN-CLASS 1E 7
t ; --
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C 6ETAIL A N RourED IN FLEX 04 Tit. (/' TGK I SEPARXnow cAN SE l
NA1NED BETWEEN CNELS MAIN
> CONTROL PANEL L
AMM /
NON. CLASS 1E C )
'TGK COMPUTER ,
COMPUTER l
l NOTE: See Tabl.e 8A-1 for Analysis t
l
. (N. Figure 8A-1
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TYPICAL CLASS lE ANALOG CIRCUIT TO NON-CLASS lE EQUIPMENT l 0000 l
I Amendment No. 32 1 ' ' ' '
l CLASS 1E CONTACTS ARE ELECTRICALLY q '
CONTROL SW. ,- 3 ISOLATED TO PREVENT ARCING O RELAY OR AUX. SW.
NON-CLASS 1 E CLASS 1E WHICH IS AN INHERENT DESIGN FEATURE OF THE DEVICE
\ OE"e.it A '
RUN IN FLEX AS RUN IN FLEX CONDUIT UNTIL CLOSE AS FOSSIBLE
' ~ 6" SEPARATION CAN BE TO TERMINALS MAINTAINED BETWEEN CLASS 1E & ,
NON-CLASS 1E WIRING
- FIELD CLASS 1E CONTACT I ' SWITCH s
---~~
> )
CONTROLSW. _
CLASS 1E (SEE PANEL j -- DETAIL A)
' ' ^
NCN-CLASS 1E )
CLRtutTS
~
TSR 8 (SEE. l < NON-CLASS 15 OETAit g) TERMINAL BLOCK' OR CLASS LE wtTH s ACCEPTABLE
, -- SEPAR ATioN OR
% > SARRIER ANNUNCIATOR NONOSS'N '
(NON-CLASS 1 E)
CIRCUITS O O DETAIL 6
/
T9K
'- )
CLASS iE l NOTE.
cKT '
I ALL. CIRCutTS ARE * " 9" l g g FlcW. s Gi SEPARATiotJ 3 j ROUTED IN CLASS *E AC.cEPTABLE BAu1EF-INSTRUMENT TRAY C o m P VTER., C OR ELEX 0040GT TC Nc4 CLASS 1E C47 l
lC BARRIER og, r" o
l SEPARATIo t4 t5 NOT PRovt3ED l : RUM PLEX UNTit G" SE7ARATL%j
! NOTE: See Table 8A-2 for Analysis ' CAN EE MANmgED EETvedEW CHAWNEt.5
- Figure 8A-2 l
'('v';
! TYPICAL LOW ENERGY DIGITAL CLASS lE CIRCUIT TO NON-CLASS lE EQUIPMENT l
00f>03 Amendment No. 32 3/77
MOTOR S CARING TEMPE.R ATURE -
, " THERMOCOUPLE OR ,
_ ANALOG DEVICE g i
a TERMINAL BOX ON N (' CLASS 1E MdTOR i
)
NON-CLASS TE ROUTEDIN ,_ _
l CONDUIT TO w 3 '
INSTRUMENT TRAY y a COMPUTER (NON-CLASS 1E)
O i
NOTE: See Table 8A-3 for Analysis Figure 8A-3
- l. -TYPICAL ANALOG CIRCUIT FROM CLASS lE EQUIPMENT TO NON-CLASS lE SYSTEM i
J .
00t)C4 Amendment No. 32 3/77
-. .