ML20071N092

Revised Procedure to Electrical Separation Test

ML20071N092
Person / Time
Site:	LaSalle
Issue date:	09/22/1982
From:	SARGENT & LUNDY, INC.
To:
Shared Package
ML20071N084	List: ML20071N083 ML20071N092
References
PROC-820922, NUDOCS 8209270327
Download: ML20071N092 (3)

Text

, SARGENT & LUNDY A EN GIN E E R S CHlCAGO 9-22-82 ELECTRICAL SEPARATION TEST PUNCHLIST ITEM 3.52

(

REFERENCE:

SER SECTION 8. 4. 6.1)

1. PURPOSE To justify the conclusion that fire or tailure resulting from electrical faults induced in non-Class lE cables will not cause electrical failure.of Class lE cables directly above.

2. TEST CONFIGURATIONS

u. All cables tested will be obtained from La Salle stock and be qualified to IEEE 383-1974'.-

b. Cable failures will be induced by electrical faults only.

c. Only power cable configurations will be tested.

(Instrumentation and contro7 ss have insufficient potential energy to induce damage. )

d. Failed cables will be installed in each of three locations (top, bottom and side) in the cable tray representing the non-Class lE installation. (Figure 1)

e. Cable failures will be induced by two methods in each of the three locations, one by high current representing a fault and one by a lower current value representing an overloaded circuit.

f. Cable trays will be solid bottom 10 foot lengths of 30-inch wide tray from La Salle stock. Cable tray's will be filled to a design index of 1.25.

g. Cable trays representing Class 1E configurations will be

, installed 1 foot above the top of the lower "non-Class lE"

. tray. Centerlines of both trays will be parallel to each other.

0209270327 820923 PDR ADocK 05000373 ,

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, , " 9-22-82 PUNCilLIST ITEM 3.52 -

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h. Conduit will be rigid steel, lis" dismeter, - ~,

10 foo t , -

lengths and liquid-tight galvanized-steel (sealtite) 5 foot lengths from La Salle stock. -

i i 1. Conduits representing Class.1E iiistallations shall be installed within two-inches, of the "non-lE" tray.

centerlines of conduit will be perpendicular to the center-1 line of the cable tray.

j. Class lE cable tr,ays and rigid steel conduit will be' supported with seismic hangers (Unistrut),-at maximuk 9 foot intervals. '

i Sealtite will be supported just beyond its coupling to a length of^ rigid steel conduit. -

k. Power cable test configuration is shown in Figure 1.

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