ML20137M281

Rev 0 to Separation Requirements for Circuits Connected to Class 1E Sources Which Are Deenergized on Accident Signal

ML20137M281
Person / Time
Site:	Clinton
Issue date:	02/01/1985
From:	SARGENT & LUNDY, INC.
To:
Shared Package
ML20137M160	List: ML20137M163 ML20137M167 ML20137M175 ML20137M185 ML20137M193 ML20137M197 ML20137M206 ML20137M215 ML20137M239 ML20137M267 ML20137M281 ML20137M287 ML20137M300 U-600412, Forwards Calculations Providing Design Basis for FSAR Discussion on Electrical Separation,Including Rev 0 to 19BD-2,19BD-8,19BD-11,19BD-12,19BD-13,19BD-15,19BD-16 & 19BD-17 & Rev 1 to 19BD-5,19BD-7 & 19BD-10
References
19-BD-15, 19-BD-15-R, 19-BD-15-R00, NUDOCS 8601280231
Download: ML20137M281 (2)

Text

caics For Secaration Recuirements for Circ:its c,ie No. / 9 - f_d - @

SA!! GENT h LUNDY connecta$ to Class lE Sources,which are _

o Date 3 _ 1 _ g-c a.awr se N

. %:%-4 -M M M Amida'-t Sir-1 e, ev

.- % O-C^OO y f Lfetv-Related N on-Lf ety-R elated Page 1 of 2 Cf eat Illi-oie pcwer cc rany Pre :ared hv _.*E-[ fd.,,,[~[ Oste,.*- -

Prote:t cli- to - pcwer Station - Unit 1 Rev'ewed by l / / I'~;' [_, [ Oate f-/ /' ~

Foi No. .:534 n0 E wg No. Approved by hMi[/ V. ~h'M Date 2 - f -St~

RE:SPCts!B'E DIVISICti: EFED FILE 20. : 1923 V PURPOSE:

The purpose of this analysis is to demonstrate that:

1. A cable which is connected to a Class lE power supply,~ feeds Non-Class 1E load (s). and is tripped on an accident signal, does not recuire separation from Class lE and associated or Non-Class lE cables of the same division (e.g. Seg. Code lE, lA, 13) when ph;sical separation is not practical.

2. The regregation of the Non-Class lE cables may be designated non-safety related, associated or safety-related.

Non-Class lE loads which are connected to Class lE power supplies that are not tripped on an accident signal are not addressed in this analysis.

UEONir w -

c ogg URE: (E m PLE)

C x S tE ses UNCONTRC! 'r D COfb': -

C O1 -

~

Breaker Trips on Accident Signal

. C o) e i

~

3

. Class lE Cable m cr--Segregation Code: Safety-Related,

' !b M.ini.= Secaration Ncn-Safety Related er Asscciated 3

• Distance or Pirrier P@ed Divisicn (Also, !b Mini:m:n separation if rot Practical Distance or Barrier P @ ed knong These Cables Khich Can Be Segregated

< = Safety-Pelated, Non-Safety Pelated or

_ _ _. Associated and are Tripped on an Accident Signal). .

C: ASS lE LCAD >

ICN-C ASS lE ICAD

, I

l I q .. _

T l

1" ("I 19 $T

%) u f,7

.1 J.Iu_iJ . 2. I ;-

9601280231 PDR ADOCK h hPDR61 ~~

A

~

Celes. For Seoaration Re:uire ents for Circuits C. c. No. / 9 - N -/8 SARGENT k LUNDY Connecu to a. ass s sources wmen ara

+ -

,,,,, ..... m.~ -s e- -m- e g-m am n em 2-1-e s c .- c *oo X Lf ety-R efered Non-hf ety-R eisted ,Sge 2 of 2 C:ent Illinois Pcwer Company Prepared by Date Proiect Clinton Pcwer Station - Unit 1 Reviewed by - lcm Proi. No. 4536-00 Eame No. Aporeved by

!Oate JUSTIFICATICN:

IEEE-384-1974, Section 4.6 defines separation. requirements of Non-Class lE circuits to Class lE and associated circuits. Sections 1

4.6.2 and 5.1.1.2 dictate that separation distances can be established by a'nalysis. Regulatory Guide 1.'75, Revision 2 Regulatory. Position C.1 requires that breakers which are used as isolation devices be tripped on the receipt of an accident signal.

All circuits for Non-Class lE loads on the Clinton Project which are tripped on an accident signal become isolated from their respective __

power sources during accident conditions. When these circuits are isolated, the conductors cannot become energized and therefore, they cannot pose a threat to the essential sources in accordance with

, Regulatory Guide 1.75, Revision 2 requirements.

Based on the, preceding, cables which are connected to Class lE power .

l sources, feed Non-Class lE loads and are tripped on an accident '

l signal, do not require separation from Ciass lE, Associated Circuits

,___,or ,Non , Class _ lE Circuits of the same division when physical separation, ,

is not practical. The segregation of. these cabl.es may be Class lE, c

i i Non-Class lE or Associated.

i g .

REVIEW METHOD: .

o -

t .,.

~- *

• - ..L....s . . . ..

d Detailed review of entire analysis.

L L _.._ .. .._ .. ... _ .1. ..

i I

I_

g _ - . . _ . ._ . . ._..e I

. . _ , _ . , _ . . . - . . - ~ . _

i i g . . _ . _ . . _ .

b/

p- .

i ' '

i i

_ _ . = ,

! , I

__ . . . . . . . _ . . . . . -_ . . . _ . . . _ _ _ . . . - . -- _ ._ _ _ _1 L. . .

{._.2._____. -

t l .

• • • • • • • • • • .e.y .........e,e..e. ....a r* . _ee. e s. Je.-ee. e. ....eg. -

g k