ML20214H583

From kanterella
Jump to navigation Jump to search
Proposed Tech Specs Consisting of Tech Spec Change 87-15, Adding Valves FSV-30-134 & FSV-30-135 to List of Flow Solenoid Valves
ML20214H583
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 05/12/1987
From:
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20214H574 List:
References
TAC-R00117, TAC-R00118, TAC-R117, TAC-R118, NUDOCS 8705270423
Download: ML20214H583 (16)
v • d • e


Text

. . . . . .

ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION CHANGES SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-87-15)

PROPOSED AMENDMENT OF TABLE 3.6-2 0F LIMITING CONDITION FOR OPERATION (LCO) 3.6.3 LIST OF AFFECTED PACES Unit 1 3/4 6-19 3/4 6-20 3/4 6-21 3/4 6-23 Unit 2 3/4 6-19 3/4 6-20 3/4 6-21 3/4 6-23 8

8705270423 DR 870512 ADOCK 05000327 PDR

(y')

^

u

?.{j4 TABLE 3.6-2 CONTAINMENT ISOLATION VALVES 5

x

. VALVE NUMBER FUNCTION MAXIMUM ISOLATION TIME (Seconds) c- '

}

A. PilASE "A" ISOLATION

1. FCV-1-7 SG Blow Dn . 10*
2. FCV-1-14 SG Blow Dn 10*
3. FCV-1-25 SG Blow Dn **

10*

4. FCV-1-32 SG Blow Dn 10* .
5. FCV-1-181 SG Blow Dn 15*

^

6. FCV-1-182 SG Blow Dn 15*
7. FCV-1-183 SG B10w Dn n K FCV-1-184 ,(psy.yo.g y ( d* /mf A/./3 Arnfus base bac 15* 4 8.
4. FCV-31C-222 eJv-Jo -af SG Blow Dn /Z d,4,f B/g Av.u u.us S ,4;,

CW-Inst Room Clrs 15p[4*

10 4 &. FCV-31C-223 CW-Inst Room Clrs 10*

t' -14. FCV-31C-224 CW-Inst Room Cirs 10*

44. FCV-31C-225 CW-Inst Room Clrs 10*

? 4. FCV-31C-229 CW-Inst Room Cirs 10*

O 44. FCV-31C-230 CW-Inst Room Cirs 10*

45. FCV-31C-231 CW-Inst Room Clrs R41 10e
16. FCV-31C-232- CW-Inst Room Clrs 10* ,

+7. FCV-43-22 Sample RC Outlet Ildrs 10*

48. FCV-43-23 Sample RC Outlet lidrs 10*
19. FCV-43-55 SG Blow Dn Sample Line 10*
20. FCV-43-58 SG Blow Dn Sample Line 10*

N. FCV-43-61 SG Blow Dn Sample Line 10*

22. FCV-43-64 SG Blow Dn Sample Line 10*

$" i;' 43. FCV-61-96 Gylcol Inlet to Floor Cooler 30*

@E E4. FCV-61-97 Gylcol Inlet to Floor Cooler 30*

@ El 25. FCV-61-110 Gylcol Outlet to Floor Cooler 30*

@x 26., FCV-61-122 Gylcol Outlet to Floor Cooler 30*

"% 27) FCV-61-191 Ice Condenser - Gylcol In 30*

&- 98 FCV-61-192 Ice Condenser - Gylcol In 30*

  • G 39 FCV-61-193 Ice Condenser - Gylcol Out 30*

$$ -30 FCV-61-194 Ice Condenser - Gylcol Out 30*

SL FCV-62-61 RCP Seals 10 Se,Sfg&OW nWnJk.s QS Nfun/.

TABLE 3.6-2 (Continued) '

m CONTAINMENT ISOLATION VALVES E

8 VALVE NUMBER FUNCTION MAXIMUM ISOLATION TIME (Seconds)

A. PHASE "A" ISOLATION (Cont.)

E a 2. FCV-62-63 RCP Seals 10 g -33.T FCV-62-72 Letdown Line 10*#

44. FCV-62-73 Letdown Line 10*# R41
35. FCV-62-74 Letdown Line 10*#
36. FCV-62-77 Letdown Line -

20

37. FCV-63-23 Accum to Hold Up Tank 10*

-38. FCV-63-64 WDS Ni to Accum 10*

, 39. FCV-63-71 Accum to Hold Up Tank 10*

40. FCV-63-84 Accum to Hold Up Tank 10*
41. FCV-68-305 WDS N 2 to PRT 10*
42. FCV-68-307 PRT to Gas Analyzer 10*

R 4 t. FCV-68-308 PRT to Gas Analyzer 10*

  • 44. FCV-70-85 CCS from Excess Lt Dn Hx 10*

T 45. FCV-70-143 CCS to Excess Lt Dn Hx 60*

g 4&. FCV-77-9 RCDT Pump Disch 10*

4h FCV-77-10 RCDT Pump Disch 10* R41

48. FCV-77-16 RCDT to Gas Analyzer 10*
49. FCV-77-17 RCDT to Gas Analyzer 10*

SG. FCV-77-18 RCDT and PRT to V H 10*

51. FCV-77-19 RCDT and PRT to V 11 10*
52. FCV-77-20 N2 to RCDT 10*

&3 FCV-77-127 Floor' Sump Pump Disch 10*

54. FCV-77-128 . Floor Sump Pump Disch 10*
55. FCV-81-12 Primary Water Makeup 10*
56. FCV-87-7 UHI Test Line 10*
57. FCV-87-8 UHI Test Line 10*

y c., 68. FCV-87-9 UHI Test Line 10*

g$ 59. FCV-87-10 UHI Test Line 10*

g5 j 60. ' FCV-87-11 UHI Test Line 10*

gQ [' FCV-26-240 Fire Protection Isol. 20 e n FCV-26-243 Fire Protection Isol. 20 z *-

Y G /ICve O SHous ess/sp- E'. RV -/-/S </ a,i/ ft },,C,, /de e,,f,y.

Mg w KSV D-/.5y'

't$ $5fg!McCstumJerp g,g py y,fy, . f

l C 0 0 TABLE 3.6-2 (Continued)

@ CONTAINMENT ISOLATION VALVES 5!

VALVE NUMBER gu/M4 Os ga/NF NCTION MAXIMUM ISOLATION TIME (Seconds)

C 25 A. PilAS A" ISOLATION (Cont.) ,

H 3.1 FCV-43-2 Sample Przr Steam Space 10* >" h

FCV-43-3 Sample Przr Steam Space

  • 10* <d /7 h e'dV-1/(- 2/Z
65. FCV-43-11 Sample Przr Liquid , 10* da/ 4< 4~ c'e /"y 4-A FCV-43-J2 Sample _Przr_ Liquid 10* Eev-f/-n l Trl. ~_YCF43'34 Accum Sample 5*

~

4{Ho ve b 8/ lou I 68. FCV-43-35-- Accum Sample 5* f en/ y 4- s: ev- VJ -e5 W. 7 tV W 75

~

~~~ Boron Analyzer 5* as 4<4. n41e,/,y #,-

70. FCV-43-77_ Boron Analyzer 5* f~cv-r5-55

~

I

.B. PilASE "B" ISOLATION 4" #"# ## # #^7 ' #'

R* 1. FCV-32-80 Control Air Supply 10

? 2. FCV-32-102 Control Air Supply 10 y 3. FCV-32-110 Control Air Supply 10

4. FCV-67-83 ERCW - LWR Cmpt Cirs 60*
5. FCV-67-87 ERCW - LWR Cmpt Clrs 60*
6. FCV-67-88 ERCW - LWR Cmpt Cirs 60* *
7. FCV-67-91 ERCW - LWR Cmpt Clrs 60*
8. FCV-67-95 ERCW - LWR Cmpt Clrs 60* R41
9. FCV-67-96 ERCW - LWR Cmpt Cirs 60*
10. FCV-67-99 ERCW - LWR Cmpt Clrs 60*
11. FCV-67-103 ERCW - LWR Cmpt C1rs 60*

y& 12. FCV-67-104 ERCW - LWR Cmpt Cirs 60*

gg 13. FCV-67-107 ERCW - LWR Cmpt Cirs 60*

g 8; 14. FCV-67-111 ERCW - LWR Cmpt Cirs 60*

gx 15. FCV-67-112 ERCW - LWR Cmpt Cirs 60*

"Z 16. FCV-67-130 ERCW - Up Cmpt Clrs 60*

y- 17. FCV-67-131 ERCW - Up Cmpt C1rs 60*

18. FCV-67-133 ERCW - Up Capt Cirs 60*

$gg 19. FCV-67-134 ERCW - Up Cmpt Clrs 60*

20. FCV-67-138 ERCW - Up Capt Clrs 60*

p e w *w.*g

... ~ '

fc i. . u. ,.

TABLE 3.6-2 (Continued) .  !

j g CONTAINMENT ISOLATION VALVES i 2  ;

i Y 1

VALVE NUMBER FUNCTION MAXIMUM ISOLATION TIME (Seconds)

C. PHASE "A" CONTAINMENT VENT ISOLATION (Cont.)

E

! Q 13. .FCV-30-50 -

Upper Compt Purge Air Exh 4* , .

~ 14. FCV3051- - 3o-ra Upper Compt Purge Air Exh 4*

15. FCV3052 - 3o-s2 Upper Compt Purge Air Exh 4* g41
16. FCV3053 - 3o -s 3 Upper Compt Purge Air Exh 4*
17. FCV3956 -3o- sc, Lower Compt Purge Air Exh 4*
18. FCV3957 -so .r
Lower Compt Purge Air Exh 4*

j 19. FCV3050 -so -ss Inst Room Purge Air Exh 4*

l . 20. FCV30'& - s o -s3 Inst Room Purge Air Exh 4*

21. FCV9ble7 - yo - se y Cntet Bldg LWR Compt Air Hon 5* -

! 22. FCV96469 -so-sos Cntat Bldg LWR Compt Air Hon 5*

23. FCV994G9 -so- no, Cntat Bldg LWR Compt Air Mon 5*

i R*

24. FCV99HG -3o .,so Cntet Bldg LWR Compt Air Hon 5*'
25. FCV9044+ -po -: 5*
T 26. FCV9GMB -po-, CntatBldgLWRComptAirMon_gep[g, Cntet Bldg /b & compt Air Mon 5*

i El 27. FCV9644+ -se. 3q Cntet Bldg tWR- Compt Air Mon "4 5* ,

28. FCV99H G -so. 3- Cntet Bldg te Compt Air Hon
  • U P R ,, 5*
29. FCV964% .-3o.:c. Cntet Bldg tWR- Compt Air. Hon 5*
30. FCV994-H- - so -i t , Ontat Bldg ompt Air Hon 5*

D. OTHER ..

1. FCV-30-46 .

Vacuum Relief Isolation Valve 25-

2. FCV-30-47 Vacuum Relief Isolation Valve 25
3. FCV-30-48 Vacuum Relief Isolation Valve 25 B" cm

.E R

  • Provisions of LCO 3.0.4 are not applicable if valve is secured in its isolated position with power removed R"

oA and . leakage limits of Surveillance Requirement 4.6.3.4 are satisfied.

r+

R41 z Z # Provisions of LCO 3.0.4 are not applicable if valve is secured in its isolated position with power removed

~

N* . and either FCV-62-73.or FCV-62-74 is maintained operable.

4 t! ,

i I

v

-TABLE 3.6-2 S CONTAINMENT ISOLATION VALVES N

. VALVE NUMBER C . FUNCTION A. PHASE "A" ISOLATION MAXIMUM ISOLATION TIME (Seconds)

" 1. FCV-1-7

2. FCV-1-14 SG Blow Dn 4
3. SG Blow Dn 10*

FCV-1-25 10*

4. FCV-1-32 SG Blow Dn *
5. SG Blow Dn 10*

FCV-1-181

  • 10*
6. FCV-1-182 SG Blow Dn
7. SG B1ow Dn 15*

FCV-1-183 p 15*

8. FCV-1-184/fr.5y-go-/54 SG Blow D [My ,,,7 g yl p ,,,, pg, f , ,,),4 ,15* +

sy._m .ssy SG B1ow Dhn N.? N'"' ##" I". R29 FCV-31C-222

40. CW-Inst Room Clrs ' 15* [ 4 '

w +1.

FCV-31C-223 CW-Inst Room Cirs 10I .

FCV-31C-224 10*

A -12. FCV-31C-225 CW-Inst Room Clrs m -13. CW-Inst Room Cirs 10*

FCV-31C-229 4

  • 44. FCV-31C-230 CW-Inst Room Cirs 10*

.15. CW-Inst Room Cirs 10*

FCV-31C-231 10*

46. FCV-31C-232 CW-Inst Room Cirs
17. CW-Inst Room Cirs 10*

FCV-43-22 10*

28. FCV-43-23 Sample RC Outlet Hdrs
19. Sample RC Outlet Hdrs 10*

FCV-43-55 10*

20. FCV-43-58 SG Blow Dn Sample'Line -
21. SG Blow Dn Sample Line 10*

FCV-43-61 10*

32. FCV-43-64 SG Blow Dn Sample.Line
43. SG Blow Dn Sample Line 10*

FCV-61-96 10*

F E' M. FCV-61-97 Gylcol Inlet to Floor Cooler

@E 25. Gylcol Inlet to floor Cooler 30*

FCV-61-110 30*

g} M. FCV-61-122 Gylcol Outlet to Floor Cooler W.

Gylcol Outlet to Floor Cooler 30*

FCV-61-191 "W 38. FCV-61-192 Ice Condenser - Gy1 col In 30*

g* 29. FCV-61-193 Ice Condenser - Gylcol In 30*

G 30 Ice Condenser - Gylcol Out 30*

FCV-61-194 30*

M3 .

FCV-62-61 Ice Condenser - Gylcol Out RCP Seals 30*

10 ,

h pf;tcp rH/MhfrJ l 0S fflV/N

~

- ~

m.

- ppy,gpywmom- --

! M _ TABLE 3.6-2 (Continued) i S CONTAINMENT ISOLATION VALVES Y

VALVE NUMBER

  • FUNCTION

$ A. SE "A" ISOLATION (Cont.) MAXIMUM ISOLATION TIME'(Seconds)

-4

2. FCV-62-63 N
33. RCP Seals FCV-62-72 Letdown Line 10
34. FCV-62-73 10*#
35. Letdown Line R29~

q FCV-62-74 Letdown Line 10*#

36. FCV-62-77 10*#
37. Letdown Line FCV-63-23 20
38. Accan to Hold Up Tank FCV-63-64 10*
39. WOS 2N to Accus

' FCV-63-71 Accum to Hold Up Tank 10*

40. FCV-63-84 10*
41. Accun to Hold Up Tank R29 FCV-68-305 WDS N to PRT 10*

w 42. FCV-68-307 10*

-) 43.

PRTt$GasAnalyzer FCV-68-308 PRT to Gas Analyzer 10*

. 44. FCV-70-85 .10*

A 45. FCV-70-143 CCS from Excess Lt Dn Hx 10*

o CCS to Excess Lt Dn Hx

46. -FCV-77-9 60*

RCDT Pump Disch 1 -

47. FCV-77-10 10*
RCDT Pump Disch
48. FCV-77-16 10*
49. RCDT to Gas Analyzer FCV-77-17 RCDT to Gas Analyzer 10*
50. FCV-77-18 '

10*

51. FCV-77-19 RCDT and PRT to V H RCDT and PRT to V H 10*

52 FCV-77-20 10*

53. 'FCV-77-127 N, t'd RCDT I-
  • FToor Sump Pump Disch 10*
54. FCV-77-128 10*

p 55.

56.

FCV-81-12 FCV-87-7 Floor Sump Pump Disch Primary Water Makeup 10*

3 10*

' g *g 57. FCV-87-8 UHI Test Line 10* ..

~

i

[

<+ y

58. FCV-87-9 UHI Test Line UHI Test Line 10*
59. FCV-87-10 10*

g- 60., FCV-87-11 .UHI Test Line 10*

  • g g bl.) FCV-26-240 UHI Test Line 10*

Og L 62/ FCV-26-243 Fire Protection Isol. .2p Fire Protection Isol. 20 i More A &#snus usy & Ry-t-/gst or,/jn/ h4x Me

& fry Ac. E s v .re -/spf

& fe.segane warJw.s xmywh '

T $ &

(& Ni! QOI TABLE 3.6-2 (Continued)

M j CONTAINMENT ISOLATION VALVES .

's x

. VALVE NUMBER FUNCTION PMXIMUM ISOLATION TIME (Seconds) c A.

lISOLATIOg'gy (Cont.)

N W AS Wg//uyd' eg ,,4 gjga egf ja

] 'N

" 10" ~##2 ###

FCV-43-2 Sample Przr Steam Space b3.

64. FCV-43-3 Sample Przr Steam Space 10* b'###-#"dD NEE "V 65. FCV-43-11 Sample Przr Liquid 10*
66. FCV-43-17 Camnle_Prre f 14uirt 10*

F,

/dve f %9,g g 4

67. FCV~43754 Accum Sample 5 ACCum_SampIn 5* ~b 'N 4*d Mit

_6R. FCV-43-15 F ##h7 A #d F-f'5- r.5-69 FCV-43-75 Boron Asalyzer 5 t 70} FCV-43-77 Raron Analyzer 5*

  1. # 8

~

' ### ' 'M M w B. ASE "8" ISOLATION f N

m 1. FCV-32-81 Control Air Supply 10 r's 2. FCV-32-103 Control Air Supply 10

3. FCV-32-111 Control Air Supply 10
4. FCV-67-83 ERCW - LWR Cmpt Clrs 60*
5. FCV-67-87 ERCW - LWR Capt Cirs 60*

60* R29

6. FCV-67-88 ERCW - LWR Cmpt Cirs
7. FCV-67-91 ERCW - LWR Cmpt Clrs 60*
8. FCV-67-95 ERCW - LWR Capt Clrs 60*
9. FCV-67-96 ERCW - LWR Cmpt Clrs 60*
10. FCV-67-99 ERCW - LWR Capt Cirs 60*
11. FCV-67-103 ERCW - LWR Cmpt Clrs 60*

u 60*

I 12. FCV-67-104 ERCW - LWR Cmpt Cirs

@g 13. FCV-67-107 ERCW - LWR Capt Clrs 60*

&g 14. FCV-67-111 ERCW - LWR Capt Clrs 60*

@q 15. FCV-67-112 ERCW - LWR Capt Cirs 60*

"yo 16. FCV-67-130 ERCW - Up Cmpt Clrs 60*

ERCW - Up Cmpt Cirs 60*

I 'g 17. FCV-67-131 60*

e 18. FCV-67-133 ERCW - Up Cmpt Cirs ERCW - Up Cmpt Clrs 60*

OO 19. FCV-67-134 t 60*

20. FCV-67-138 ERCW - Up Capt Clrs

Q h'. h5 T t.f# .

l.

TABLE 3.6-2 (Continued)

  • CONTAINMENT ISOLATION VALVES E

VALVE NUMBER FUNCTION MAXIMUM ISOLATION TIME (Seconds)

C. PHASE "A" CONTAINMENT VENT ISOLATION (Cont. )

C 3 13. FCV-30-50 Upper Compt Purge Air Exh ' 4*

y 14. FCV-30-51 Upper Compt Purge Air Exh

15. FCV-30-52 4*
  • Upper Compt Purge Air Exh 4*
16. FCV-30-53 Upper Compt Purge Air Exh R29
17. FCV-30-56 4*

Lower Compt Purge Air Exh 4*

18. FCV-30-57 Lower Compt Purge Air Exh
19. FCV-30-58 4*

Inst Room Purge Air Exh 4*

20. FCV-30-59 Inst Room Purge Air Exh
21. FCV-90-107 4*

Cntat Bldg LWR Compt Air Mon 5*

22. FCV-90-108 Cntmt Bldg LWR Compt Air Mon
23. FCV-90-109 5*

w Cntet B1dg LWR Compt Air Hon 5*

24. FCV-90-110 Cntet B1dg LWR Compt Air Mon A 25. FCV-90-111 Cntat Bldg LWR Compt Air Mon 5*

5*

9 26. FCV-90-113 Cntet B1dg IWF diispFAIFMon k EP Idee (#1 k 5*

ro

" 27. FCV-90-114 Cntmt Bldg EWR Compt Air Mon

28. FCV-90-115 5*

Cntet B1dg LWR Compt Air Mon uUOR9 '5*

29. FCV-90-116 Cntmt B1dg tWR Compt Air Mon ,
30. FCV-90-117 5*

Cntmt Bldg LW Compt Air Hon , 5*

l D. OTHER

  • s
1. FCV-30-46 2.

Vacuum Relief Isolation Valve 25 FCV-30-47 Vacuum Relief Isolation Valve

3. FCV-30-48 25 Vacuum Relief Isolation Valve 25 NN qg

$(

g5 # Provisions of LCO 3.0.4 are not applicable if valve is secured in its isolated position with power g removed and either FCV-62-73 orj FCV-62-74 is maintained operable. R29 s

ENCLOSURE.2 PROPOSED TECHNICAL SPECIFICATION CHANGES SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-87-15)

DESCRIPTION AND JUSTIFICATION FOR PROPOSED AMENDMENT OF TABLE 3.6-2 OF LIMITING CONDITION FOR OPERATION (LCO) 3.6.3 l

.i i

i

ENCLOSURE 2 Description of change The proposed amendment would affect the following changes to Table 3.6-2,

" Containment Isolation Valves," of limiting condition for operation (LCO) 3.6.3:

1. Add two flow solenoid valves, designated as FSV-30-134 and 135, to Table 3.6-2, Section A. " Phase 'A' Isolation," in both unit 1 and unit 2 technical specifications.
2. Relist in sequential order the listing of the valves in table 3.6-2, section A, so that the valves are presented in sequential order of both system number and valve number in both unit 1 and unit 2 technical specifications.

~

3. For the unit 1 technical specifications only, correct the valve designations of entries 14 through 30 of Table 3.6-2, Section C,

" Containment Vent Isolation," to include a hyphen between the alpha code descriptor and the system number, and between the system number and the valve sequence number.

4. Correct the function description of entries 26 through 30 of table 3.6-2, section C, to read "Cntmt Bldg UPR Compt Air Mon" in both unit 1 and unit 2 technical specifications.

Reason for Change The proposed amendment is advanced for the following reasons:

1. The two flow solenoid valves, designated as FSV-30-134 and 125, are containment isolation valves on the nonengineered safety feature (non-ESF) containment pressure transmitter sense line. Both valves receive a Phase "A" containment isolation 31gnal. As such, the subject valves should be listed in Table 3.6-2, Section A " Phase ' A' Isolation," to ensure that appropriate LCO and surveillance requirements (SRs) for containment isolation valves are satisfied.

The subject valves were inadvertently omitted from the above-named table of both unit 1 and unit 2 technical specifications.

2. Table 3.6-2 generally lists the isolation valves first by the system designation number and then by the valve designation number. Such a systematic listing provides for readily finding an entry in table 3.6-2. Several entries in section A of table 3.6-2, however, are out of the sequence described above. The proposed amendment would reorganize the valve listing in this section so that the sequencing described above is followed throughout table 3.6-2 for both unit 1 and unit 2 technical specifications.
3. For the unit 1 technical specifications only, the valve designations are improperly given for the entries 14 through 30 of Section C,

" phase 'A' Containment Vent Isolation," of table 3.6-2. There are no field separators between the alpha prefix, system numbers, and valve numbers of the valve designations. This can result in confusion or error in attempting to read this portion of table 3.6-2. The proposed amendment would provide for the valve numbers of these entries to be consistent with the form of all other valve numbers given in table 3.6-2 of the unit 1 technical specifications.

4. The function description of entries 26 through 30 of table 3.6-2, section C, of the unit 1 and unit 2 technical specifications improperly lists the valves as "Cntmt Blds LWR Compt Air Mon." The proposed amendment would correctly identify the subject valves as being "Cntmt Blds UpR Compt Air Mon."

lustification for Change The following justification is offered for the various changes affected by the proposed amendment *to the unit 1 and unit 2 technical specifications.

1. The two flow solenoid valves located in the non-ESF containment pressure sense line, designated as FSV-30-134 and 135, are designed, installed, and maintained as containment isolation valves.

The subject valves are leak rate tested to the requirements of survelliance instruction (SI) -158.1, stroke time tested to the requirements of SI-166.1, and receive functional testing to the requirements of SI-166.4. Both valves receive a phase "A" containment isolation signal.

The subject valves have inadvertently been omitted from the li'&.ing given in Table 3.6-2 Section A. " phase 'A' Containment Vent Isolation." The proposed technical specification change would amend the above-named table to include flow solenoid valves FSV-30-134 and 135. Inclusion of the subject valves in the valve listing given in table 3.6-2 would provide for the two valves to be subject to the appropriate LCO (LCO 3.6.3) and SRs (SR-4.6.3.1, -4.6.3.2, -4.6.3.3, and -4.6.3.4). Furthermore, adding the subject valves to table 3.6-2 makes the unit 1 and unit 2 technical specifications consistent with descriptions and analyses presented in the FSAR.

2. Rearranging the listing of the valves given in section A of table 3.6-2 would provide for the valves to be listed sequentially by valve number within the system listings. Such a sequencing allows for entries in the table to be more readily found and minimizes the potential for oversight or misreading of an entry. Thus, the proposed amendment would improve the organization of this section of the unit 1 and unit 2 technical specifications.
3. Because of apparent typographical errors, hyphens between the alpha descriptor, the system number, and the valve number were omitted from the valve designations given for entries 14 through 30 of Section C,

" Phase 'A' Containment Vent Isolation," of table 3.6-2. When attempting to use this portion of the table, this omission induces confusion that could result in an error in reading the entries. The proposed amendment would modify the affected valve designations to include hyphens at the appropriate locations within the designations.

4. Because of apparent typographical errors, the function of the valves identified in entries 26 through 30 of section C of table 3.6-2 is incorrectly given as isolation of containment building lower compartment air monitors (Cntmt Blds LWR Cmpt Air Mon). The subject valves actually isolate containment building upper compartment air monitors (Cntmt Blds UPR Cmpt Air Mon). The proposed amendment would correct the erroneous entries in both the unit 1 and unit 2 technical specifications.

as W.. ~ -. 4 m. .a _ e. m - ._-.- -

i 1

ENCLOSURE 3 PROPOSED TECHNICAL SPECIFICATION CHANGES SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 .

4 DOCKET NOS. 50-327 AND 50-328

(TVA-SQN-TS-87-15) i DETERMINATION OF NO SICNIFICANT HAZARDS EVALUATION FOR THE PROPOSED AMENDMENT OF TABLE 3.6-2 0F

) LIMITING CONDITION FOR OPERATION (LCO) 3.6.3 1

l 4

t I

1 1

9 i

s e

J

J- ENCLOSURE 3 SIGNIFICANT HAZARDS EVALUATION

1. Does the proposed amendment involve a significant increase in the probability or consequences of an accident previously evaluated?

No. The proposed amendment to the technical specifications changes-table 3.6-2 to include flow solenoid valves FSV-30-134 and 135 in the listing of containment vent isolation valves that receive a Phase i "A" containment isolation signal. The omission of the subject valves from table 3.6-2 was an oversight. The subject valves currently undergo testing as containment isolation valves as identified in survelliance instructions SI-158.1 (leak rate testing), SI-166.1

! (stroke time testing), and SI-166.4 (functional testing). The i proposed technical specification change would provide for the two

valves to be subjected to the limiting condition for operation (LCO) for containment isolation valves (LCO 3.6.3) and the corresponding 4

surveillance requirements (SRs) (SR-4.6.3.1, -4.6.3.2, -4.6.3.3, and

-4.6.3.4). Thus, the proposed amendment would provide for increased 1l administrative controls over the subject valves. Also, the other changes are administrative in nature, involving relisting in .

I sequential order the valves listed in table 3.6-2 and the correction of typographical errors. The proposed amendment affects no changes

in equipment, setpoints, limits, or operating procedures. Therefore, the proposed amendment involves no significant increase in either the probability or consequences of an accident previously evaluated.

1

2. Does the proposed amendment create the possibility of a new or j different kind of accident from any accident previously evaluated?

I No. Flow solenoid valves FSV-30-134 and 135 are' designed,

! installed, and maintained as containment isolation valves. Safety '

j analyses reported in chapter 15 of the Sequoyah Final Safety Analysis Report (FSAR) take credit for the isolation function of the subject i valves. As stated above, other changes that would be affected by the proposed amendment are strictly administrative in nature. The

, proposed amendment does provide for the two valves of interest to be i subjected to the appropriate LCO and associated SRs for containment isolation valves. The proposed amendment does not involve either a change in hardware capabilities or a modification in the operation of

the plant. Thus, the proposed amendment does not create the possibility of a new or different kind of accident from any accident

{ previously evaluated.

4 1 i 3. Does the proposed amendment involve a significant reduction in a margin of safety?

]

i No. The proposed amendment would subject flow solenoid valves 1 FSV-30-134 and 135 to the LCO for containment isolation valves 1 ,

j I

i-

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

y -(.

i  : ,s

_2-l (LCO 3.6.3) and the associated four SRs (SR-4.6.3.1, -4.6.3.2,

-4.6.3.3, and -4.6.3.4). This action would provide additional i assurance that the two valves would perform their intended function and provide for remedial action should it be determined that the valves are. inoperable. Again, as stated above, the proposed j~

amendment also provides for correcting typographical errors and '

organizing the entries into a more readily usable format and thereby g j reduces the potential for errors in using the subject table. Thus, the proposed amendment provides for an increase in the margin of safety, i

em

.i h

G J

\

/

4 1 i I .t' 1

4

]

1 l

4 i

4 i

i j i

'f I

i i ._ _ . _ . . _ . _ _ . _ _ . . , . _ _ _ . _ . _ . .__ _ . - _ _ _ _ _ _ _ _ _ _ - . . _ . _ .

Retrieved from "https://kanterella.com/w/index.php?title=ML20214H583&oldid=3091056"