ML20211F450
| ML20211F450 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/11/1987 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | Youngblood B NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8702250097 | |
| Download: ML20211F450 (7) | |
Text
.
9
. TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374o1 SN 157B Lookout Place FEB 111987 U.S. Nuclear Regulatory Commission Attn:
Document Control Desk Office of Nuclear Reactor Regulation Washington, D.C.
20555 Attention:
Mr. B. J. Youngblood In the Matter of
)
Docket Nos. 50-327 Tennessee Valley Authority
)
50-328 SEQUOYAH NUCLEAR PLANT - CABLE AMPACITY INFORMATION
Reference:
Letter from R. L. Cridley to B. J. Youngblood dated December 23, 1986 NRC indicated in a telephone call on February 3,1987, that five pages were missing from the copies used for their internal distribution. Enclosed are copies of the missing pages:
Page 1/5 of Enclosure 2 Pages 5 and 10 of Enclosure 5 Page 10 of 12 for Table 1 of Attachment 1 to Enclosure 5 Page 1 of 1 for Attachment 4 to Enclosure 5 The TVA file copy for the referenced letter has been reviewed, and the pages indicated as missing by NRC were found within that document.
I previously indicated that TVA would be implementing an independent check of the letters submitted to NRC to ensure page integrity.
One copy is submitted directly to the project manager.
I suggest that the project manager keep that copy and verify that pages missing from NRC internal copies are not just internal copying errors.
I recognize the problems missing pages cause to the review and have taken measures to control TVA submittals.
Very truly yours, TENNESSEE VALLEY AUTHORITY 22 g h $
7 R. Celdley, D *ector p
Nuclear Safet and Licensing Enclosures ces see page 2
/100I
,i An Equal Opportunity Employer
. U.S. Nuclear Regulatory Commission FEB 111987 cc (Enclosures):
U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. J. J. Holonich Sequoyah Project Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 Mr. G. G. Zech, Director TVA Projects U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37319 t
1
T~
e.ut,x y5-TVA 64125 9 49) (Op WLS.45) t*NITED $TATES GOVERNMENT OV3 N ODMoq MCM10 TdMd MM1 TENNESSEE VALLEY AUTHORI TO
- Those listed PROM W, S. Raughley, Chief Electrical Engineer, W8 C126 C-K DATE
- October 7, 1986
SUBJECT:
ALL NUCLEAR PLANT CABLE AMPACITY
- CORRECTIVE ACTION AND SAMPLING PROGRA This memorandum supersedes the September 8, 1986, memorandum fecm W. S. Raughley to Those listed (B43 860909 902) direction for the handling of defective units, further define V3 levelin ord power cablos, and provide multiplying factors for trays and fire wrap control' materials.
The purpose of this memorandum is to provido direction on the perform corrective action and the establishment of a sampling program to determine adoquacy of electrical cables with respect to their ampacity rating.
mandated by deficiencies in Design Standards E12.1.1 - E12.1.4 which were This is idantified in Problem Identification Report PIRGENEEB8605 standards have been superseded and all inadequacies corrected by the recen These design issuance of D3-E12.6.3 "Ampacity Tables for Auxil k.~,
cad Control Power C bl (0-15,000V)."
a es In addition to the actions specified herein.for confirming the adequacy o cable with respect to ampacity, each project's Equipment Qualification e
must address the impact of the new design standard on its efforts.
necessary if the project has derated the cable's qualified conductorThis is temperature below its insulation temperature rating using such computer programs as "CASCALC" or "CACTAC."
The affected parameters include the covers, and bottems, and fire wrap, and the assum the conductor is doenergi:od.
efforts in this area with the cable annein11st.Each project should discuss end coordin projoct must confirm the adequacy of the following: Prior to 1.
The specific cable number and cable type mark number for all auxiliary control power Class lE cables, and non-Class lE cables routed with Class. ' *g 1E cables must be known.
rating for the installed raceway configuration. 4These must appear in DS-E
[,
n: ; g--
2.
The exact installed routing of the cables identified in item 1 must be known.
,,_-.......t.
i
)
,mT. t-A.1_-" n.T. -.
- ?:
'i#.~.::. ;. h * '
.=
,i~..-T v.'..
~
Q,
'.. ~ '2l*f* Q.".f;i: '.=..
1--
k'E
- -~
t:
~
., a. 2.,a
. *.., -.~.-
- A.t :. d '
$nclm,re {
y GROUP: CABLE TITLE: Ampacity Tables for Auxiliary and Control ELECTRICAL DESIGN Power Cables (0-15,000V)
^
STANDARD DS-E12.6.3 Percent Values Number of of Ampacities Conductors From Tables 4 through 6 80 7 through 9 70 10 through 24*
70 25 through 42*
60 43 and above*
50
- These factors include the effects of 50 percent load diversity.
When sizing a V4-or VS-level cable for conduit installation, the number of conductors which are presently routed in the conduit or which may be added in the future must be addressed.
If the cable being sized " fills" the conduit in which it is being routed negating any future cable installation, or if the conduit is dedicated to a particular device for y
which no future cables will be required, it should be sized based on the actual number of conductors in the conduit.
If the cable is being routed in a conduit in which additional cables may be routed, derating to account for future cable installation should be considered. For V4-level cables, a derating factor of 0.70 is recommended to allow future irstallation up to 24 conductors total; for VS-level cables, a factor of 0.80 is recommended to allow up to 6 conductors in the condult. If the number of conductors of the new cable cAuses the total number of conductors in the conduit to increase to a new dorating factor range (i.e., from 3 to 6 from 6 to 24. from 24 to 42, etc.), the adequacy with respect to ampacity of the previously installed cables must be verified.
The ampacities of V4-and VS-level cables in conduit given in Tables 1 and 3 are based on conduit separation from other conduits by a minimum of one-fourth the diameter of the larger condult.
Conduits for V4-and V5-lovel cables have been assumed to be installed in a worst case grouping of one conduit high and six conduits wide resulting in an additional derating of 0.86.
This dorating shall be applied when the grouping configuration exists for a length exceeding 6 feet. To correct for other installation 1
configurations, see General Note 7 of Attachment 1.
No group dorating factor is required if the conduits are spaced greater than the equivalent of the diameter of the larger condult. Group dorating is not applicable to V3-level conduit applications due to their inherent diversity.
NUMBER OF CONDUITS Horizontal Vortical 1
2 3
4 5
6 1
1.00 0.94 0.91 0.88 0.87 0.86 2
0.92 0.87 0.84 0.81 0.80 0.79 3
0.85 0.81 0.78 0.76 0.75 0.74 4
0.82 0.78 0.74 0.73 0.72 0.72 5
0.80 0.76 0.72 0.71 0.70 0.70 a
6 0.79 0.75 0.71 0.70 0.69 0.68 _ _.-
Endswee [
GROUP: CABLE TITLE: Ampacity Tables for Auxiliary and C,ontrol ELECTRICAL DESIGN Power Cables (0-15,000V)
STANDARD DS-E12.6.3 7.0 ATTACHMENTS includes Tables 1, 2, and 3 and General Notes applicable to cable ampacities. Attachments 2, 3, and 4 include Tables 4, 5, 6, and 7 applicable to derating factors for cable ampacities. Attachment 5 1
includes Table 8 applicable to conductor sizing factors by load types.
7.1 Attachment 1. Ampacity Tables 1, 2, and 3 for Auxiliary and Control Power Cables Electrical Design Standard DS-E12.6.3 7.2 Attachment 2, Cable Ampacity Derating factors for Random Fill Cable Tray Fire Protective Coatings 90oC Conductor Temperature (V4-AND VS-LEVELS ** ONLY) (Table 4) 7.3 Attachmont 3, Cable Anipacity Factors for TSI (Table 5) and 3M (Tablo 6) Fire Wrap Material 7.4, Cablo Ampacity Factors for Tray Covers and/or Bottoms (Table 7) 1 7.5 Attachment 5, Conductor Sizing Factors by Load Types (Table 8)
8.0 REFERENCES
8.1 ICEA Publication No. P-46-426, " Power Cable Ampacities," dated 1962 including cumulative errata of September 1, 1966 8.2 ICEA-NEMA Standards Publication No. P-54-440, "Ampacities Cables in Opon-Top Cablo Trays," Second Edition dated August 1979 8.3 NFPA 70, " National Electrical Codo," dated 1987 l1 8.4 Joslyn Rosearch Contor Tost Report No.77-098 dated September 9, 1977, "Tho Effect of Flamomastic 77 Fire Protective Coating on the Ampacity of a Grouped Powor and Control Cable Assembly" 8.5 Joslyn Rosaarch Contor Test Roport No. 76-167A dated January 21, 1977, "Tho Effoct of Flamemastic 71A Fire Protective Coating on the Ampacity of Grouped Power and Control Cable Assembly" 8.6 Joslyn Corporation Test Roport No.85-033 dated February 24, 1986, "Tho Effect of Flamemastic 73A and Flamemastic 77 Fire Protective Coatings on the Ampacity of a Grouped Power and Control Cable Assembly" 8.7 Factory Mutual Rosaarch Roport No. J.I. OF0Q5.AF d6ted December 19, 1980, " Examination of the Effect of Vimisco Cable Coating No. 2-B on Ampacity in Cable Trays".
i
-D4 b
DS-E12.6.3 Attachmmt 1 Table 1 Page 10 of 12 s
e-.
~
s e
.e see n.,
e
_J >= => t sas >= s a at *==
2*.
LaJ Im L2 C3 W
==
==
- e e-o V3 tr3 ws ert M M Exn cp e-o== M P4 tra V3 try N re O *e e> pq O M gED D3 N We
.C.,3 4 L3 C3 t%
t%
P% F% u O. uO te1 arp o o =aJ
.=n 34 2
==
== o o o go to pq ( 4 pg 39 y1 ey =d3 te a O= tw
-e
=== e=e e-o a-4 6-4 90 to ta to et er W B es's le s as"3 ts t
- E: 2 **
4 4 e-o 3-N aas er --
J >= CC =43 ex.n 9-=
p==
eZ e=*
LaJ
- R LJ 4,1 >=
=d5 tr3 O* N t.rl O r3 P% an an trl erp M Pet t
C.3 4 De C3 F%
- e" 03 fts======= me. 9%
tw =d3 vi tu m ee es- - e-o 4m a
eeoon o-eT eT er er er eT er er er mz J 3: m-rw a rw e o e a N to M er ee *e me o -o o es o a: a: M mxz2 mmE
- E e5 e o a
D=
De -
D'm eE Gr3 we ese e-o ese
- 3:
L3 8aJ
- e.e Las Las tag taa 443
=Z e-= or er 4
4 ef
- T
- T *T eT et eT er of at er et et e-
>=
W e-=
e-sh; 2 C3 Z
E EZ EZ Z &l M Ie He;;
eT e eT
- T
- T C3 eT C3 er C3 *T C3 er C"3
- t Z 2 2C E! M 2.r *T N.
2 m
1 M E* 2M L: 3; a2 M 2 LC 1: E ag Joe =-=
- T 84J sE e.J EA 4 t==
.A
=
==
==
me e-o 448
- at e*
4 as **= A *
&aA LaJ La.d had hJ M4 O :">
F4
- T eT
- T
- 1
- T
- T eT eT
- T
- T et
- T
- T eT
- T eT eT eT et er et er C"3 eT t s
- T f*3 eT C3 eT Q M 32" e--
e e-e--
e-=
- K J
3-D 2
E LA
.=J Zo
- n M lm; M MZ MM M 2T EM am
- *Et M M M ;d".
E; ag E 2 32*,. M 2d*, EE 4 *** #e3 Lad A 9@
C3 e C3 lb
- O JK e
>=
J N %f
&ad eT Le== ta;
- a >= ta,;====*
LE LaJ **
sap 9==
t-4 ee
==
==e
==
t'*
6 E
- E e-o 2 en L"a s=s Las m u M,
Lad LaA he LaJ Rak Lad oJ eg :;;
e~
s2 er er eT
=T er et
- T
- T er eT er
- T eT eT eT er er
- T eT er r3
=T r1 *T r3 eT t 3 *T t3 6 W
e--
>=
6-e-
W
-J C3
- E E
E lm M at: M M 2 LZ M ;e: Lil% M MM 2: 3:!: LE L1 M M In: &2 3C J&1 E* LE: L:3 3E 2; a'.
ca 63 J
2T 2 54 ad et as m&
e.=
==a 1*
m1 L3 e4 sJZ :e=
De og s,sg rd >=
e.r an ga o
g3 g as p wt OO O c9 O O O at"> O sel es O O O O O O oO O e;::n o. o = ses 94 O '
e-o==
e saa
(;J g o
o J
P* s e s. als O.s3 es t e: o *aJ e-o O
tw e o a:s a;.# ca o" o lr" a>C es f sooo o er ootD te es e h e b.
D a= es-esa P.
Po esa er'a o o o ce sta o o g'a g a r 4
.u.e
=
a try ha ope eer e-o 2
3r" 4
e a
e e
e e
e o
e e
=
e o
e e
e o
e e
6 e s*e 5 4 to t e to ten e4 ts e-o e
e-o
==
CO O o
=-e e** OO== e-o e-o== oooO e9 ooO O oooO O Ooo 3 en u8 E 6 el t aJ ea 9 6-e 8
ST I
=J S.
4 trp W1 Ifl V3 W1 trB VS V3 W 3 es1 tf3 as 3 ts 3 esl tf3 F3 isl W1tf3 V3 WB M *P M or M or M 88* M ee' LJ.J C3 had 0 W eE **
Las e.J 0
a a t.a.3 t rl e
tee ed e
=d
- =.B sa a tie L
eE em.
- E L.a.J
.d t==
99 Da=
e rp C
O O O O e"t O O O O. O n O O O O O O O O O O O trB WS V3 trB ers W1 er3 era Art tra
&ed Dan rh.
g re E e.i!. La.e O*
O' 52' U* O*
O+
U* O* Os O (p.
U*
EF + D* D
- O' De Ua O+
EJ
- t* e t e r 8 C0 t' 4 6 4 F4 t '4 p
4 T'eS P.e 8""a"o lE Lee et C3 ee
- "e ** ** ** ** eo eo es o e-o t== sa: 2 L
=
et ei e.
e, e,
= = er et er eT up est us est L2 83 SJ La E A LJ wr og er eg 4 W s o.
3 C3 C3 W p.,
e=s e-,
g3 gas gag C.J C.JJ Q tB L.3 LJ LJ e.d
.J e3 fit 443 "3 art 3 o.J e
g3 g q;;3 Ca.
W U3 se.
O*
"De
.'m
- "m og e=,
e,,3,a,a w
- B P"9 *, P9 e e,
o.s.,
ar"5e tJ"3 er er e")
LaA Lad W LaJ 2mC wM wa eat
==s e=s e9
- "D P3 La4 h e te s h t b e e,n est o
e, o=,
- a. sa. tas tre ut a rt in ta3 EJ"5 er t og sg e., g,,,,
B in 18 D Cao W C3 O C3 C3 CJ CB
- T eT gg et D*
E*
Os
- e
- ** *"* 64 had mA m m m 64. W E6. m 4 A &md 6a ta. (4 64 og gg c3 g g3 g3 M
M Da
!=
63 &AA L3 64J 63 6 J L3 had had L8 8 483 ut ut us un e.a:
LU U3 LC OJ L3 La La L.3== De 3*
th: 84; 441
=
- e;
- e,; 3.
'"5. De Om to 2* Os Co De Omd ** Em D* D* 2 2* an 3 US RJ 3
.= v s e.s 3 t.3 t3 u =* ee==
w La w w w :=g :ed w :== b3 h5 o o o o o o, O to 9"=
RJ %.e t.o,,3,
=%
J.
4
% o t f1 f fs tts ets e.s p g3 to a te & la D ts 3 ts 8 t, e b B ene **
e-o e
O O O O O a;
=o o.o.o 'Oo e, 5
.e e-o e-o eo e-o e-o we e=*
=G
- e 3 meJ =43 41 mae 8'E re ;E *gs (.3 g 3 s"J' 0
t f1 a ft 43 9 45
- E e1 84 %
- La L3 o
3 9 Le 75 t 's Os
. (J. g.3. L3 W (J E=3 SJ. 4 3 % 3
- = ** L3 0.=3
- 8 og e..
% = *
- % =* ** % ' EJ L3 L.4 L3
=e i
as mE 04 og O O O O N
t.,,3. y ga ga be De
>=
- E
.e e.e we ene======='*
- =*==* ** ** me e.*
F'* % % % t'3 gn 3 E!
gh
- 4% L8 8 *#1 Lei
- 1 G 60 E' e 0
f* 4 ;d ;g 3*
y*
E*
B*
E*
B*
B+
3*
B* tJ LJ (f3 LD a =9 tra e rg gn.. **
e-e sus
- e. en 'of an aus M &
s one e&
- E t a e l tJ t8 kJ t9 LJ 8JEJ E M 'E
~E "9
gs!
t8 E. 9.e.
3; 3; 3*
B; El E E E; E 85 *3 e4 L
2!E 7E e f1 gn e gg gg3
'A'E op
.a.
- E
=== mz -=== - -,
e=3 e4 LE pv
- o. ean g=, o gas O O O O O O O er ed* N r-4 3 g 3 O O ut est e-t W e.o. t ai to. tel to. ut A %
og g *E q 6e s E % ta.
2*
t a4 E.*
ta; 14 6 O O.e a;.5
- m *""" l33 **"""'*""*""*4=
ee es.
c g:-
ss L.s s.3 aa W3 to g W3 O O ** - ** me e 3 p.,.
gy, ng,,,
,,gy en sus or ear ts 3 as 3 f*e f4 84 **
'9 8e EER *We en en eum am usus an e 0
On,3 O
(
4 3 g e
L.ad
$ 60 05 89 Laj Laj La M u - - s t se la.d tai t a.a t.a.A La.d s.a.d 443- =.J 6.e 44 LaJ LaJ La8 868 L.a.4 444 LaJ.
s, ta &a& 443 2 6 43 Lee %43 Lak e-e.
e e en r) 813 3R ***
III
&.a#
- o
- e og e-o me we e-o f*4 4 W 8 8 * **
t t
3 e
e g
e e e
La8 t a.
e 4 J
eA F*
F* EL is.
64.
- 64. F1 F1 m'#
- E
- C r"1 0
M i.
- s a.*
LAt esp >=
p.
21
- =9 0"1 *** O*
=*E G3 EI3 SJ 8 3 d'*D L8.!
4*
.i.*a as.gia :n.ss ma:
a :ss' M
.c G3 Sa.,
e
- s*
.J-
- .se ps
- t b L: [rt a;*
4 a.a.
to t a.
th n.
t3 E est e
.m m
La L.e
- a m ;m" 4
- n as a g g3 3 ma m
- m a a a a m 2as a a gi
. e,.a,-.:e.
J.g~.
DS-E12.6.3 Page 1 of 1 TABLE 7 CABLE AMPACITY FACTORS FOR TRAY COVERS AND/OR TRAY BOTTOMS Multiplying Description Factor y
Sheet metal bottom 0.890 Sheet metal top 0.750 Sheet metal top and bottom 0.660 9
9
+
0 0
e 6
h i
._