ML20085J424
| ML20085J424 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 10/04/1983 |
| From: | VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML20085J423 | List: |
| References | |
| NUDOCS 8310130148 | |
| Download: ML20085J424 (49) | |
Text
..
PLANT SYSTEMS SURVEILLANCE REQUIRUtENTS (Continued)
The representative sample selected for functional testing shall include the various configurations, operating environments and the 4
range of size and capacity of snubbers. At least 25% of the snubbers in the representative sample shall include snubbers from the following three categories:
1.
The first snubber away from each reactor vessel nozzle 2.
Snubbers within 5 feet of heavy equipment (valve, pump, turbine, motor, etc.).#
3.
Snubbers within 10 feet of the discharge from a safety relief valve.
Snubbers identified in Tables 3.7-4a and 3.7-4b as "Especially Difficult to Remove" or in "High Radiation Zones During Shutdown" shall also be included in the representative sample.* Tables 3.7-4a and 3.7-4b may be used jointly or separately as the basis for the sampling plan.
In addition to the regular sample, snubbers which failed the previous functional test-shall be retested during the next test period.
If a l
spare snubber has been installed in place of a failed snubber, then both the failed snubber (if it is repaired and installed in another position) and the spare snubber shall be retested. Test results of l
these snubbers may not be included for the re-sampling.
l If any snubber selected for functional testing either fails to lockup or fails to move, i.e., frozen in place, the cause will be evaluated and if caused by manufacturer or design deficiency all snubbers of the same design subject to the same defect shall be l
functionally tested. This testing requirement shall be independent of the requirements stated above for snubbers not meeting the functional test acceptance criteria.
- The requirement to functionally test additional samples of Steam Generator / Reactor Coolant Pump Support snubbers is exempt provided engineering analysis determines that no failures of generic concern occurred in the initial j
sample of this snubber group.
- Permanent or other exemptions from functional testing for individual snubbers in these categorics may be granted by the Commission only if a justifiable basis for exemption is presented and/or snubber life destructive testing was performed to qualify snubber operability for all design conditions at either l
the completion of their fabrication or at a subsequent date.
NORTH ANNA - UNIT 1 3/4 7-29a 8310130148 831004 PDR ADOCK 05000330 l
P PDR
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
E Q
814 CH-251-C I
Yes No 802 CH-262-C I
Yes Yes 815 CH-235-C I
Yes Yes 859 CH-226-10 I
No No 860 CH-222-11 I
Yes No 186 CH-244-12 I
Yes No 4
185 CH-251-12 I
Yes Yes i
842 CH-251-6 I
No No l
189 CH-244-Pent A
No No 190 CH-244-Pent A
No Yes 191 CH-244-Pent A
No No I
110 CH-244-12 I
Yes No 123-3 CH-244-12 I
Yes No i
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
E
- 1 188 CH-244-Pent A
No No 806 CH-251-A I
Yes No 203A QS-338-11 I
No Yes 203B QS-338-11 I
No Yes l
207 QS-26b11h I
No No w2 209A QS-338-2 I
No Yes y
da 209B QS-338-2 I
No Yes 600 QS-256-11 I
Yes Yes 800 QS-274-QSH A
No No 801 QS-274-QSH A
No No 802 QS-272-QSH A
No No No 803 QS-270-QSH A
No 804 QS-270-QSH A
No No
Table 3.7-4a (Continued)
O SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **-
TO REMOVE
'(A or I)
(Yes or No)
(Yes or No) g U
140 RC-245-11 I
Yes No 53-46 RC-249-A I
Yes No 53-46A RC-249-A I
Yes No 217-4 RC-243-B I
Yes Yes l
g 232-4 RC-303-P I
Yes No 0
Table 3.7-4a (Continued)
E SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE 8
(A or I)
(Yes or No)
(Yes or No)
E G
236-3 RC-311-P A
Yes No 236-4 RC-311-P A
Yes No 236-5 RC-309-P A
Yes No 236-6 RC-311-P A
Yes No 236-7 RC-311-P A
Yes No U
237-2 RC-311-P A
Yes No Yg 238-3 RC-311-P A
Yes No a
239-2 RC-311-P A
Yes No 239-8 RC-306-P A
Yes No 239-21 RC-306-P A
No No 239-30 RC-305-P A
No No 240-2 RC-311-P A
Yes No i
Table 3.7-4s (Continuzd)
SAFETY RELATED I!YDRAULIC SNUBBERS
- s
- =
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE h
(A or 1)
(Yes or No)
(Yes or No) 1
~
l
- 1 100A RH-228-8 I
No No 100B RH-228-8 I
No No i
100C RH-228-8 I
No No 100D RH-228-8 I
No No 100E RH-228-8 I
No No R
101A RH-228-5 I
No No y
102A RH-228-5 I
No Yes v.
S 102B RH-228-5 I
No Yes 103A RH-228-3 I
No Yes 103B RH-228-3 I
No Yes 103C RH-228-3 I
No Yes 104A RH-233-4 I
Yes No d
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-ARFA) # INACCESSIBLE ZONE **
TO REMOV3 (A or 1)
(Yes or No)
(Yes or No) i l
105A RH-225-A I
No Yes 106A RH-244-4 I
Yes Yes 107A RH-229-3 I
No Yes 107B RH-229-3 I
No Yes 107C RH-229-3 I
No Yes to D
108A RH-237-2 I
No Yes s
108B RH-237-2 I
Yes Yes 109A RH-245-3 I
Yes Yes 109B RH-245-3 I
Yes Yes 109C RH-245-3 I
Yes Yes 109D RH-245-3 I
Yes Yes
'10A RH-240-5 I
Yes No 110B RH-240-5 I
Yes No
7 ---- _ _ - - - _ - _ - _ - _ - _ - -. - - _ - _. - -. _ -. - -. _ _ - - _ - _. - - - _ - - - _ __ _ - - _ - _ - _ - - _.
Table 3.7-4a (Continued) f SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or 1)
(Yes or No)
(Yes or No)
I E
4 110C RH-240-5<
I Yes No
~
110D RH-240-5<
I Yes No Illa
'RH-227-4 I
Yes Yes lilB RH-227-4 I
Yes Yes 112A RH-224-4 I
Yes Yes u
D 113A RH-224-4 I
Yes Yes ll3B RH-224-4 I
Yes Yes 114A RH-224-4 I
Yes No 115A RH-234-4 I
Yes Yes 116A RH-229-4 I
Yes Yes 117A RH-224-4 I
Yes No 452 RH-234-7 I
Yes Yes 1
1 l
- cg Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
- l 8
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT g
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE y
- (A or I)
(Yes or No)
(Yes or No) 202 RS-267-16 I
No Yes I
204A RS-338-9 I
No Yes 204B RS-338-9 I
No Yes 205A RS-338-10 I
No Yes l
R 205B RS-338-10 I
No Yes Yg 206A RS-338-2 I
No Yes 206B RS-338-2 I
No Yes 208-A RS-338-2 I
No Yes 208-B RS-338-2 I
No Yes 1
136A RS-305-P I
No No 606 RS-259-2 I
No Yes
Table 3.7-4a (Continued) z Oy SAFETY RELATED HYDRAULIC SNUBBERS
- B>
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT I
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
U 113 SGD-298-13 I
Yes No 114 SGD-298-13 I
Yes No ll7C SGD-304-4 I
Yes No 117E SGD-298-4 I
Yes No R
146 SGD-295-5 I
Yes No s~
y 148 SGD-301-5 I
Yes No Se 150B SGD-303-5 I
Yes No 179 SGD-307-6 I
Yes No 180 SCD-307-6 I
Yes No 181 SGD-307-6 I
Yes No 183 SGD-307-6 I
Yes No
Table 3.7-4a (Continued)
.~
5 SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) 8 E
- 1 253 SHP-267-TBb A
No Yes
~
254 SHP-267-TBB A
No Yes 255 SHP-277-TBM A
No Yes 256 SHP-274-TBB A
No Yes 257 SHP-294-TBM A
No Yes ta Y
258 SHP-294-TBM A
No Yes 259 SHP-294-TBM A
No Yes 260A SHP-277-MSH A
No No 260B SHP-277-MSH A
No No 220A SHP-300-SB A
No Yes 220B SHP-300-SB A
No No 221A SHP-300-SB A
No Yes
Table 3.7-4a (Continued)
^
SAFETY RELATED HYDRAULIC SNUBBERS
- z O
G!
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE h>
(A or I)
(Yes or No)
(Y== or No)
E 4
30A SHP-290-MSVH A
No No 30B SHP-290-MSVH A
No No 4
38A SHP-290-MSVH A
No No 38B SHP-290-MSVH A
No No 203 SHP-291-RCA I
Yes Yes 204 SHP-291-RCA I
Yes Yes R.
e 205 SHP-291-RCA I
Yes Yes q
y w
E 206 SHP-291-RCA I
Yes Yes.
207 SHP-291-RCA I
Yes Yes 208 SHP-291-RCA I
Yes Yes 305 SHP-305-MSVI; A
No No 306 SHP-305-MSVH A
No No 307 SHP-305-MSVH A
No No 308 SHP-300-MSVH A
No No 309 SHP-299-MSVH A
No No 310 SHP-300-MSVH A
No No l
1 Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
- 2 O
M SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR llICH RADIATION ESPECIALLY DIFFICULT h
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
I l
E n
400A SI-258-13 I
No Yes 400B SI-258-13 I
No Yes 400C SI-258-13 I
No Yes 400D SI-258-13 I
No Yes l
107A SI-256-SG I
No No 101A SI-256-SG A
No No y
101B SI-256-SC A
No No U
102A SI-256-SG A
No No 102B SI-256-SG A
No No 104A SI-256-SG A
No No j.
h
Table 3.7-4a (Continued) 2 SAFETY RELATED HYDRAULIC SNUBBERS
- o:=
SNUBBER SYSTEM SNUJBER INSTALLED ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT h>
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO' REMOVE 8
(A or I)
(Yes or No)
(Yes or No)
Cz H
s
~'
~
A No
-No 1045 SI-256-SG 10)
' SI-256-SG A
No No w,
~
~
, SI-256-SG A
~
Np.
No' 106
+
.2" -F.
100
',SI-257-B I
.J~
No-Yes
-Yea I
No 101A SI-257-F,
--x,
.R
-Yes'
--,,7 101B SI-257-B I
No 3
- y
.~:-
3
.,101 C SI-257-B T
No,'~
Yes 102C SI-221-B
'I-No, No l
7 es' Yes i
~'
133A SI-238-C-I' 1 ~,..
SI-238--C I
Yes Yes 103B
^
,.e n
a+*
4 103C SI-238-C I
Yes Jes n.
1 104 SI-221-C I
No' No
- I l
V p
4 f.
9 A.
e
~
n s
u
- -- 1#
.g j
s e *
,,r ',
/
p 4
Table 3.7-4a (Continued)
SAFETY RELATED HYLRAULIC SNUBBERS
h NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) l N
n 105A SI-238-A I
No Yes 105B SI-238-A I
No Yes 105C SI-238-A I
No Yes 4
l 106A SI-221-A I
No No 107 SI-256-SG A
No No 108 SI-256-SG A
No No 109 SI-250-A I
Yes No 110 SI-219-A I
No No 18 111 SI-241-1 I
No No 112 SI-256-SG A
No No 113 SI-256-SG A
No No 451 SI-238-9 I
Yes Yes 700 SI-256-SG A
No No 701 SI-256-SG A
No No 702 SI-256-SC A
No No 703 SI-256-SG A
No No 604 SI-261-2 A
No No i
~ '
Table 3.7-4a (Continued) z SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE 8
(A or I)
(Yes or No)
(Yes or No)
E 4
200 WFPD-291-RCA I
No No 201 WFPD-291-RCA I
No No 202 WFPD-291-RCA I
No No 1
203 WFPD-291-RCA I
No No 204 WFPD-291-RCA I
No No M
205 WFPD-291-RCA I
No Yes Y
206 WFPD-291-RCA I
No No 207 WFPD-291-RCA I
No No 208 WFPD-291-RCA I
No No 209 WFPD-291-RCA I
No No 210 WFPD-291-RCA I
No No 211 WFPD-291-RCA I
No No 1
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS *
^
O ie SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA) #
INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No) i E
l 212 WFPD-291-RCA I
No No 216 WFPD-282-MSVH A
No No 217 WFPD-282-MSVH A
No No 218 WFPD-282-MSVH A
No No 222 WFPD-272-MSVH A
No No l
223 WFPD-272-MSVH A
No No 224 WFPD-272-MSVH A
No No l
231A WFPD-291-RCA I
No Yes t
i
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) 8 I
E G
231B WFPD-291-RCA I
No Yes
~
231C WFPD-291-RCA I
No Yes 231D WFPD-291-RCA I
No Yes 4
235 WFPD-291-RCA I
No No 600 WFPD-291-3 I
Yes No M
8 5
Table 3.7-4a (Continued) g O
SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
U 213 WFPD-300-SB A
No No 214 WFPD-300-SB A
No No 215 WFPD-300-SB A
No No 226A WFPD-300-SB A
No No 226B WFPD-300-SB A
No No y
227A WFPD-300-SB A
No No E
227B WFPD-300-SB A
No No 228 WFPD-300-SB A
No No 229 WFPD-300-SB A
No No 230 WFPD-300-SB A
No No
Table 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No) i E
4 c
~
245A WFPD-295-FWH A
No Yes 245B WFPD-295-FWH A
No Yes 246 WFPD-295-FWH A
No Yes 233 SDHV-307-MSVH A
No No R
233A SDHV-307-MSVH A
No No n
y 234 SDHV-307-MSVH A
No No o.
235 SDHV-307-MSVH A
No Yes
~
236 SDHV-297-MSVH A
No No
~
300 SDHV-303-MSVH A
No No t
301 SDHV-303-MSVH A
No No 302 SDHV-303-MSVH A
No No i
303 SDHV-303-MSVH A
No No' 304 SDHV-303-MSVH A
No No e
9
g l.
S Table 3.7-4a (Continued) g SAFETY RELATED HYDRAULIC SNUBBERS
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE y
(A or I)
(Yes or No)
(Yes or No) i
~
u 405 CC-224-Pent A
No Yes 407 CC-224-Pent A
No No 1
571 CC-251-AB A
No No i
453 CC-241-RCA A
Yes No y
411 CC-255-Pent A
No No O
412 CC-252-Pent A
No No 413 CC-256-Pent A
No No 202 FC-249-FBB A
No No 204 FC-249-FBB A
No No i
l
Table 3.7-4a (Continued) 5 SAFETY RELATED HYDRAULIC SNUBBERS
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) 8
- 1 1
WGCB-246-A I
Yes Yes
~
2 WGCB-246-C I
Yes Yes IA WGCB-244-Pent A
Yes No 2A WGCB-244-Pent A
Yes No 103 WGCB-279-TBM A
No Yes
<a2 104 WGCB-279-TBM A
No Yes Y?
E Table 3.7-4a (Continued) h SAFETY RELATED llYDRAULIC SNUBBERS
- i c
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT d
NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) e--
237 SAE-307-MSVH A
No No 238 SAE-307-MSVH A
No No i
239 SAE-307-MSVH A
No No 240 SHP-307-MSVH A
No No 241 SHP-307-MSVH A
No No y
e 242 SilP-307-MSVII A
No No 243 SAE-297-MSVH A
No No 244 SAE-297-MSVH A
No No 245 SAE-297-MSVH A
No No f
TABLE 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS
- 5 E
HICH RADIATION SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REMOVE i
' h (A or I)
(Yes or No)
(Yes or No) i E
- 1 1-RC-Q-SIA RC-291-A I
Yes Yes 1-RC-Q-S2A RC-291-A I
Yes Yes 1-RC-Q-S3A RC-291-A I
Yes Yes 1-RC-Q-S4A RC-291-A I
Yes Yes i
1-RC-Q-SSA RC-260-A I
Yes Yes 1-RC-Q-S6A RC-260-A I
Yes Yes 1-RC-Q-S7A RC-255-A I
Yes Yes Y
l-RC-Q-S8A RC-255-A I
Yea Yes
]
l-RC-Q-S9A RC-260-A I
Yes Yes l
l-RC-Q-SIDA RC-260-A I
Yes Yes 1-RC-Q-S11A Rs:-252-A I
Yes Yes l-RC-Q-S12A RC-252-A I
Yes Yes l
v.
TABLE 3.7-4a (Continu:d)
SAFETY RELATED HYDRAULIC SNUBBERS
- E h.
HIGH RADIATION SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REMOVE h>
(A or I)
(Yes or No)
(Yes or No) i E
ti 1-RC-Q-SIB RC-291-B I
Yes Yes 4
1-RC-Q-S2B RC-291-B I
Yes Yes l-RC-Q-S3B RC-291-B I
Yes Yes 1-RC-Q-S4B RC-291-B I
Yes Yes 1-RC-Q-SSB RC-260-B I
Yes Yes t
1-RC-Q-S6B RC-260-B I
Yes Yes y
1-RC-Q-S7B RC-255-B I
Yes Yes c6 1-RC-Q-S8B RC-255-B I
Yea Yes i
1-RC-Q-S9B RC-260-B I
Yes Yes 1-RC-Q-S10B RC-260-B I
Yes Yes 1-RC-Q-SilB RC-252-B I
Yes Yes 1-RC-Q-S12B RC-252-B I
Yes Yes 4
k
TABLE 3.7-4a (Continu:d) i SAFETY-RELATED HYDRAULIC SNUBBERS
- E
- =
HIGH RADIATION E!
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT g
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REMOVE d
NO.
(A or I)
(Yes or No)
(Yes or No)
E G
1-RC-Q-SIC RC-291-C I
Yes Yes 1-RC-Q-S2C RC-291-C I
Yes Yes 2
1-RC-Q-S3C RC-291-C I
Yes Yes j
1-RC-Q-S4C RC-291-C I
Yes Yes 1-RC-Q-S5C RC-260-C I
Yes Yes
{'
1-RC-Q-S6C RC-260-C I
Yes Yes
{
1-RC-Q-S7C RC-255-C 1
Yes Yes 1-RC-Q-S8C RC-255-C I
Yea Yes l
1-RC-Q-S9C RC-260-C I
Yes Yes 1-RC-Q-S10C RC-260-C I
Yes Yes i
1-RC-Q-S11C RC-252-C I
Yes Yes
)
1-RC-Q-S12C RC-252-C I
Yes Yes
?
Table 3.7-4b (Continued) l SAFETY RELATED MECHANICAL SNUBBERS
- O M
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR llIGli RADIATION ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA) # INACCESSIBLE ZONE **
TO REMOVE h>
(A or I)
(Yes or No)
(Yes or No)
I c
i
[o 118 CFPD-304-3 I
Yes No 119 CFPD-304-3 I
Yes No 221 CFPD-304-13 I
Yes No 224 CFPD-304-13 I
Yes No Y.
S m
t
TABLES 3.7-42 AND 3.7-4b (Continuzd)
TABLE NOTATIONS iLOCATION ABBREVIATIONS Abbreviations Area A
Cubicle A B
Cubicle B C
Cubicle C Pent.
Penetration Area Aux. Bldg.
P Pressurizer Cubicle RCA Reactor Containment Annulus MSVH Main Steam Valve House MSH Main Steam Header - Turb. Bldg.
TBM Turbine Bldg. Mezzanine TBB Turbine Bldg. Basement SB Service Bldg.
SG Safeguards Bldg.
FWH Feedwater Header - Turb. Bldg.
ABB Auxiliary Bldg. Basement FBB Fuel Bldg. Basement AFW Auxiliary Feedwater Pump House NOTE: Numbers indicate radial locations in reactor containment.
NORTH ANNA - UNIT 1 3/4 7-66 l
l f
TABLES 3.7-4n rnd 3.7-4b (C:ntinusd)
TABLE NOTATIONS SYSTEM ABBREVIATIONS Abbreviations System CC Component Cooling CH Charging FC Fuel Pit Cooling QS Quench Spray RC Reactor Coolant RH Residual Heat Removal RE Recirculation Spray SAE High Pressure Steam Atmospheric Discharge SDHV Decay Heat Release SGD Steam Generator Drain 4
SHP Main Steam SI Safety Injection WFPD Feedwater Pump Discharge WGCB Steam Generator Blowdown WS Service Water l
I
- Snubbers may be added to safety related systems without prior License Amendment to Tables 3.7-4a and 3.7-4b provided that a revision to Tables 3.7-4a and 3.7-4b is included with the next License Amendment request.
j
- Modifications to this table due to changes in high radiation areas may be made without prior License Amendment provided that a revision to Tables 3.7-4a 3.7-4b is included with the next License Amendment request.
l l
l l
l NORTH ANNA - UNIT 1 3/4 7-66a
p.
e e
f ATTACIMENT 2
PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
The representative sample selacted for functional testing shall include the various configurations, operating environments and the range of size and capacity of snubbers. At least 25% of the snubbers in the representative sample shall include snubbers from the following three categories:
1.
The first snubber away from each reactor vessel nozzle 2.
Snubbers within 5 feet of heavy equipment (valve, pump, turbine, motor, etc.).f 3.
Snubbers within 10 feet of the discharge from a safety relief valve.
l Snubbers identified in Trbles 3.7-4a and 3.7-4b as "Especially Difficult to Remove" or in "High Radiation Zones During Shutdown" shall also be included in the representative sample.* Tables 3.7-4a and 3.7-4b may be used jointly or separately as the basis for the sampling plan.
In addition to the regular sample, snubbers which failed the previous functional test shall be retested during the next test period.
If a spare snubber has been installed in place of a failed snubber, then both the failed snubber (if it is repaired and installed in another position) and the spare snubber shall be retested. Test results of these snubbers may not be included for the re-sampling.
If any snubber selected for functional testing either fails to lockup or fails to move, i.e.,
frozen in place, the cause will be evaluated and if caused by manufacturer or design deficiency all snubbers of the same design subject to the same defect shall be functionally tested. This testing requirement shall be independent of the requirements stated above for snubbers not meeting the functional test acceptance criteria.
- The requirement to functionally iest additional samples of Steam Generator / Reactor Coolant Pump Support snubbers is exempt provided engineering analysis determines that no failures of generic concern occurred in the initial i
sample of this snubber group.
- Permanent or other exemptions from functional testing for individual snubbers in these categories may be granted by the Commission only if a justifiable basis for exemption is presented and/or snubber life destructive testing was performed to qualify snubber operability for all design conditions at either the completion of their fabrication or at a subsequent date.
NORTH ANNA - UNIT 2 3/4 7-26b
TABLE 3.7-4m SAFETY RELATED HYDRAULIC SNUBBERSS HIGH RADIATION 5
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No)
E g
556-8 CC-269-C I
Yes No U
556-10 CC-263-C I
Yes No 605-10 CC-269-C I
Yes No 548-8 CC-267-A I
Yes No 400 CC-244-ABB A
No Yes 414 CC-252-PENT.
A No No 415 CC-252-PENT.
A No No 599-21 CC-273-B I
Yes Yes l
to 416 CC-256-ABB A
No No 726-1 CC-234-RCB I
Yes Yes
[]
d>
406 CC-244-PENT.
A No Yes j
%J 408 CC-244-PENT.
A No No 507 CH-247-RCA I
No Yes 401-3 CH-222-RCB I
No No 401-4 CH-220-RCB I
No No 401-5 CH-221-RCB I
No Yes 401-8 CH -221-RCB I
No Yes 401-9 CH-225-RCB I
No Yes l
803 CH-245-ABB A
No No v,
P
~
TABLE 3.7-4m (Continu:d)
SAFETY RELATED HYDRAULIC SNUBBERS *
- s O
E!
HIGH RADIATION g
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT g
NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No) i E
.U 800-6 CH-243-A I
Yes No 801-15 CH-238-A I
Yes Yes 801-20 CH-243-A I
Yes No 801-22 CH-243-A I
Yes Yes 466-1 CH-224-RCB I
No Yes 482-2 CH-226-RCB I
No Yes 483-2 CH-226-RCB I
No Yes g>
633-1A CH-236-RCB I
No Yes 633-1B CH-236-RCB I
No Yes
((
h) 633-4 CH-236-RCB I
No Yes 801-25 CH-237-RCB I
No Yes 801-26 CH-237-RCB I
No Yes 492-42A CH-255-C I
Yes Yes 492-42-B CH-255-C I
Yes Yes 304 QS-255-RCA I
No Yes 301 QS-255-RCA I
No Yes 706 QS-267-QS A
No No 303A RS-260-RCA I
No Yes 303 RS-260-RCA I
No Yes 300 RS-333-RCA I
No Yes 622A RS-336-RCA I
No Yes 622B RS-336-RCA I
No Yes
TABLE 3.7-4a (Continurd)
SAFETY RELATED HYDRAULIC SNUBBERS
- h HICH RADIATION g
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No) l Eti 515-1 RC-257-B I
Yes Yes g
516-2 RC-258-B I
Yes Yes 516-3 RC-257-B I
Yes Yes 516-5 RC-253-B I
Yes Yes 410-0 RC-264-P I
No No I
547-2 RC-257-C I
Yes Yes 547-3 RC-253-C I
Yes Yes.
)h 553-2 RC-259-C I
Yes Yes y
529-1 RC-257-A I
Yes Yes U
531-2 RC-258-A I
Yes Yes 531-3 RC-257-A I
Yes Yes 531-5 RC-253-A I
Yes Yes 531-6 RC-255-A I
Yes Yes 619-2 RC-243-C I
Yes Yes 619-4 RC-243-C I
Yes Yes 411-4 RC-264-A I
Yes Yes 411-5 RC-264-A I
Yes Yes 413-8 RC-264-C I
Yen Yes 637-2 RC-303-P I
Yes No 637-6 RC-297-P I
Yes No 638-1 RC-297-P I
Yes No 639-1 RC-297-P I
Yes No
TABLE 3.7-4a (Continu d)
SAFETY RELATED HYDRAULIC SNUBBERS
- HIGH RADIATION hg SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No)
I E
G 230B SHP-298-SB A
No Yes 239 SHP-307-MSVH A
No No 226 SHP-300-SB A
No Yes 209A SHP-329-RCA I
No Yes 209B SHP-329-RCA I
No Yes 242 SHP-307-MSVH A
No No 227A SHP-300-SB A
No Yes 230A SHP-302-SB A
No Yes hh 228 SHP-300-SB A
No Yes y
O 227B SHP-300-SB A
No Yes 231 SHP-300-SB A
No Yes 257 SHP-267-TBB A
No Yes 224 SHP-329-RCA I
No Yes 202A SHP-329-RCA I
No Yes 202B SHP-329-RCA I
No Yes e
TABLE 3.7-4a (Continurd)
SAFETY RELATED HYDRAULIC SNUB 3ERS*
te HIGH RADIATION Qg SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
I En'
.203 SHP-321-RCA I
No Yes y
204 SHP-321-RCA I
No Yes 240 SHP-307-MSVil A
No No 4
241 SHP-307-MSVH A
No No 546-1 SHP-309-MSVH A
No Yes 546-3 SHP-306-MSVH A
No No 248 SHP-279-TBM A
No Yes l
249 SHP-268-TBB A
No Yes y
250 SHP-273-TBB A
No Yes O
251A SHP-291-TBM A
No Yes 251B SHP-291-TBM A
No Yes 253 SHP-291-TBM A
No Yes 600 SHP-329-RCA I
No Yes l
f
[
l 1
TABLE 3.7-4a (Continutd)
SAFETY RELATED HYDRAULIC SNUBBERS
- HIGH RADIATION SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT h
gj NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
I Ey 106A SI-221-RCB I
No No N
505 SI-239-RCA I
No Yes 502 SI-247-RCA I
No No 503 SI-247-RCA I
No No 501 SI-247-RCA I
No No 500 SI-247-RCA I
No No 105B SI-242-A I
Y's No 416-4 SI-253-C I
Yes Yes u,
SE 504 SI-239-RCA I
Yes Yes 103A SI-243-C I
Yes No 101B SI-244-B I
Yes No 100 SI-256-SG A
No No 101 SI-262-SG A
No No 419-2 SI-251-B I
Yes Yes 532-4 SI-257-C I
Yes Yes 421-2 SI-251-A I
Yes No 421-3 SI-253-A I
Yes No 533-5 SI-257-B I
Yes Yes 511 SI-230-RCB I
No Yes 107 SI-237-RCB I
Yes No 619 SI-245-RCP I
Yes No l
TABLE 3.7-4a (Continued)
SAFETY RELATED HYDRAULIC SNUBBERS *
~
HIGH RADIATION hy SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OF DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)#
INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No) t E
227A WFPD-294-SB A
No No g
218 WFPD-294-MSVH A
No Yes 230 WFPD-295-SB A
No Yes 228 WFPD-295-SB A
No Yes 204 WFPD-302-RCA I
No Yes 205 WFPD-302-RCA I
No Yes 210 WFPD-302-RCA I
No Yes h
211 WFPD-302-RCA I
No Yes ya 229A WFP3-295-SB A
No Yes S
229B WFPD-295-SB A
No Yes j
628 WFPD-283-MSVH A
No No 629 WFPD-296-SB A
No No 630 WFPD-282-MSVH A
No No 631 WFPD-303-RCA I
No Yes 632 WFPD-303-RCA I
No Yes 3A WGCB-246-PENT.
A No No 3B WGCB-246-PENT.
A No No 701A WS-264-QS A
No No 701B WS-264-QS A
No No
TABLE 3.7-4a (Continu:d)
SAFETY RELATED HYDRAULIC SNUBBERS
- E HICH RADIATION h
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REF0VE h
(A or I)
(Yes or No)
(Yes or No) i E
- 1 2-RC-Q-SIA RC-291-A I
Yes Yes y
2-RC-Q-S2A RC-291-A I
Yes Yes 2-RC-Q-S3A RC-291-A I
Yes Yes 2-RC-Q-S4A RC-291-A I
Yes Yes 2-RC-Q-SSA RC-260-A I
Yes Yes 2-RC-Q-S6A RC-260-A I
Yes Yes d
y 2-RC-Q-S7A RC-255-A I
Yes Yes u
2-RC-Q-S8A RC-255-A I
Yea Yes 2-RC-Q-S9A RC-260-A I
Yes Yes 2-RC-Q-S10A RC-260-A I
Yes Yes 2-RC-Q-SilA RC-252-A I
Yes Yes 2-RC-Q-S12A RC-252-A I
Yes Yes
TABLE 3.7-4a (Continutd)
SAFETY RELATED HYDRAULIC SNUBBERS
- E h
HIGH RADIATION SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT h
NO.
ON, LOCATION (ELEVATIO!;-AREA)# INACCESSIBLE ZONE **
TO REMOVE (A or I)
(Yes or No)
(Yes or No)
E 4
2-RC-Q-SIB RC-291-B I
Yes Yes y
2-RC-Q-S2B RC-291-B I
Yes Yes 2-RC-Q-S3B RC-291-B I
Yes Yes 2-RC-Q-S4B RC-291-B I
Yes Yes 2-RC-Q-SSB RC-260-B I
Yes Yes 2-RC-Q-S6B RC-260-B I
Yes Yes 3
y 2-RC-Q-S7B RC-255-B I
Yes Yes
$o' 2-RC-Q-S8B RC-255-B I
Yes Yes 2-RC-Q-S9B RC-260-B I
Yes Yes 2-RC-Q-S10B RC-252-B I
Yes Yes 2-RC-Q-S11B RC-252-B I
Yes Yes 2-RC-Q-S12B RC-252-B I
Yes Yes t
1
TABLE 3.7-4a (Centinutd)
SAFETY RELATED HYDRAULIC SNUBBERS
- x j;
HIGH RADIATION y
SNUBBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT NO.
ON, LOCATION (ELEVATION-AREA)# INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No)
I Ey 2-RC-Q-SIC RC-291-C I
Yes Yes u
2-RC-Q-S2C RC-291-C I
Yes Yes 2-RC-Q-S3C RC-291-C I
Yes Yes 2-RC-Q-S4C RC-291-C I
Yes Yes
{
2-RC-Q-SSC RC-260-C I
Yes Yes i
2-RC-Q-S6C RC-260-C I
Yes Yes U
2-RC-Q-S7C RC-255-C I
Yes Yes 2-RC-Q-S8C RC-255-C I
Yea Yes 2-RC-Q-S9C RC-260-C I
Yes Yes 2-RC-Q-S10C RC-260-C I
Yes Yes 2-RC-Q-S11C RC-252-C I
Yes Yes 2-RC-Q-S12C RC-252-C I
Yes Yes e
t v
4
TABLE 3.7-4b SAFETY RELATED MECHANICAL SNUBBERS
- 5
- =
HIGH RADIATION y
SNUBBER SYSTEM SNUBBER INSTALLED ACCESSIBLE OR DURING SHUTDOWN ESPECIALLY DIFFICULT' NO.
ON, LOCATION ELEVATION INACCESSIBLE ZONE **
TO REMOVE h
(A or I)
(Yes or No)
(Yes or No) i 4
~
~
3 a
.s 7
g a
9 5
i
TABLES 3.7-4a AND 3.7-4b (Continued)
TABLE NOTATIONS
- LOCATION ABBREVIATIONS
- Abbreviations Area A
Cubicle A B
Cubicle B C
Cubicle C Pent.
Penetration Area Aux. Bldg.
P Pressurizer Cubicle RCA Reactor Containment Annulus RCB Reactor Containment Basement RCP Reactor Containment Penetration Area MSVH Main Steam Valve House AFPH Aux. Feedwater Pump House MSH Main Steam Header - Turb. Bldg.
TBM Turbine Bldg. !!ezzanine TBB Turbine Bldg. Basement SB Service Bldg.
SG Safeguards Bldg.
QS Quench Spray Area FWH Feedwater Header - Turb. Bldg.
ABB Auxiliary Bldg. Basement FBB Fuel Bldg. Basement RHR Residual Heat Removal Mezzanine NOTE: Numbers indicate radial location in reactor containment.
I NORTH ANNA - UNIT 2 3/4 7-49
TABLES 3.7-4a and 3.7-4b (Continued)
TABLE NOTATIONS SYSTEM ABBREVIATIONS Abbreviations System CC Component Cooling CH Charging QS Quench Spray RC Reactor Coolant RH Residual Heat Removal RS Recirculation Spray SAE High Pressure Steam Atmospheric Discharge SDHV Decay Heat Release SGD Steam Generator Drain SHP Main Steam SI Safety Injection WCPD Condensate Pump Discharge WDRD Drain Discharge WFPD Feedwater Pump Discharge WGCB Steam Generator Blowdown WS Service Water l
l l
- Snubbers may be added to safety related systems without prior License l
Amendment to Tables 3.7-4a and 3.7-4b provided that a revision to Tables 3.7-4a and 3.7-4b is included with the next License Amendment request.
- Modifications to this table due to changes in high radiation areas may be made without prior License Amendment provided that a revision to Tables 3.7-4a l
l and 3.7-4b is included with the next License Amendment request.
t l
NORTH ANNA - UNIT 2 3/4 7-493
'Q A
,k o
e e
e o
e t
I i
l i
l ATTACINENT 3 1
i l
I l
I l
1 1
1
_ SAFETY EVALUATION The proposed change to Technical Specification surveillance requirement 4.7.10c will add an exemption from functionally testing additional samples of steam generator / reactor coolant pump support snubbers.
If a
steam generator / reactor coolant pump support snubber fails, an evaluation will be performed to determine if generic deficiencies exist. When the evaluation of the snubber failure is performed, and the integrity of other snubbers is suspected, additional samples will be functionally tested.
This additional surveillance will increase the plant level of safety.
The proposed changes to Technical Specification 3/4.7.10, Tables 3.7-4a and 3.7-4b reflect the current plant configurations due to design changes for North Anna Units I and 2.
Tables 3.7-4a reflect the addition, deletion and typographical corrections to safety related hydraulic snubbers and Tables 3.7-4b reflect the hydraulic snubber system abbreviations.
A description of the proposed changes is broken down as follows:
Thirtysix hydraulic snubbers are being added to the Steam Generator / Reactor Coolant Pump Supports for North Anna Unit Nos. I and 2 (RC-Q-SIA through RC-Q-S12A, RC-Q-SIB through RC-Q-S12B and RC-Q-Slc through RC-Q-S12C).
Eleven hydraulic snubbers are being added to the Steam Generator Wet Layup System (1-SGD-HSS-113, 1-SGD-HSS-114, 1-SGD-HSS-117C, 1-SGD-HSS-4-117E, 1-SGD-HSS-146, 1-SGD-HSS-148, 1-SGD-HSS-150B, 1-SGD-HSS-179, 1-SGD-HSS-180, 1-SGD-HSS-6-181 and 1-SGD-HSS-183) due to Design Change 79-S47 for North Anna Unit 1.
The Stcam Generator Wet Layup System adds forced circulation capabilities to each of the three steam generators. The installation of a new piping line from each of three steam generator upper shells to a containment penetration required the addition of the eleven hydraulic snubbers.
Design Change 79-S74 added three hydraulic snubbers (1-SI-HSS-107A, 1-CH-HSS-110 and 1-CH-HSS-123-3) for North Anna Unit 1 in order to comply with l
IE Pulletin 79-14.
IE Bulletin 79-14 requested that. as-built configurations of safety-related piping systems adequately conform to the design criteria and documents which were used as input for seismic analysis.
i Design Change 79-S69A added twelve hydraulic snubbers (1-RC-HSS-236-3, l
1-RC-HSS-236-4, 1-RC-HSS-236-5, 1-RC-HSS-236-6, 1-RC-HSS-236-7, 1-RC-HSS-237-2, 1-RC-HSS-238-3, 1-RC-HSS-239-2, 1-RC-HSS-239-8, 1-RC-HSS-239-21, 1-RC-HSS-239-30 and 1-RC-HSS-240-2), for North Anna Unit 1, I
due to the Reactor Vessel Head and Pressurizer Vent System (NUREG-0737 Item l
II.B.1).
1 l
Design Change 80-S07 added eleven hydraulic anubbers (1-SDHV-HSS-300, 1-SDHV-HSS-301, 1-SDHV-HSS-302, 1-SDHV-HSS-303, 1-SDHV-HSS-304, 1-SDHV-HSS-305, 1-SDHV-HSS-306, 1-SDHV-HSS-307, 1-SDHV-HSS-308, 1-SDHV-HSS-309 and 1-SDHV-HSS-310), for North Anna Unit 1,
due to a reanalysis of the Amplified Response Spectra Curves.
I
Design Change 78-01 added two hydraulic snubbers (1-SI-HSS-604 and 1-RS-HSS-606) for North Anna Unit 1 due to a new four inch cross-over line These between the Safety Injection System and the Recirculation Spray System.
hydraulic snubbers are designed to be compatable with new stress calculations for the new cross-over line.
79-S72 added one hydraulic snubber (1-CC-HSS-571), for North Design Change 1, on the Component Cooling System due to a reanalysis of Amplified Anna Unit
- Response Spectra Curves.
Design Change 80-S46 added one hydraulic snubber (1-CC-HSS-453) for North Anna Unit I
and thirteen hydraulic snubbers (2-CC-HSS-414, 2-CC-HSS-415, 2-CC-HSS-416, 2-CH-HSS-803, 2-RS-HSS-622A, 2-RS-HSS-622B, 2-SEP-HSS-600, 2-SI-HSS-619, 2-WFPD-HSS-628, 2-WFPD-HSS-629, 2-WFPD-HSS-630, 2-WFPD-HSS-631 rnd 2-WFPD-HSS-632) for North Anna Unit 2 due to a reanalysis of Amplified Response Spectra Curves.
Design Change 79-S69B added four hydraulic snubbers (2-RC-HSS-637-2, 2-RC-HSS-637-6, 2-RC-HSS-638-1 and 2-RC-HSS-639-1) for North Anna Unit 2, due to the Reactor Vessel Head and Pressurizer Vent System (NUREG-0737, Item II.B.1).
Two hydraulic snubbers (1-RH-HSS-118 and 1-RH-HSS-119) are to be deleted from the North Anna Unit 1 Technical Specifications. A Piping Flexibility Analysis Summary performed prior to initial criticality did not require these two hydraulic snubbers so they were removed by Engineering and Design Coordination Report P-2010-D-1.
Hydraulic snubbers 2-SHP-HSS-223A and 2-SHP-HSS-223B appear twice in the North Anna Unit 2 Technical Specifications (Pages 3/4 7-40 and 3/4 7-41).
These hydraulic snubbers are to be deleted from Page 3/4 7-41.
Eighteen hydraulic snubbers (1-SI-HSS-101, 1-SI-HSS-101D, 1-SAE-HSS-240, 1-SAE-HSS-241, 1-SAE-HSS-242, 1-FW-HSS-213, 1-FW-HSS-214, 1-FW-HSS-215, 1-FW-HSS-226A, 1-FW-HSS-226B, 1-W-HSS-227 A,
1-W-HS S-227 B.
1-FW-HSS-228, 1-FW-HSS-229, 1-FW-HSS-230, 1-FW-HSS-245A, 1-FW-HSS-245B and 1-FW-HSS-246) have typographical errors.
These hydraulic snubbers should be labelled 1-SI-HSS-101A, 1-SI-HSS-101B, 1-SHP-HSS-240, 1-SHP-HSS-241, 1-SHP-HSS-242, 1-WFPD-HSS-213, 1-WFPD-HSS-214, 1-WFPD-HSS-715, 1-WFPD-HSS-226A.
1-WFPD-HSS-226B, 1-WFPD-HSS-227A, 1-WFPD-HSS-227B, 1-WFPD-HSS-228, 1-WFPD-HSS-229, 1-WFPD-HSS-230, 1-WFPD-HSS-245A, 1-WFPD-HSS-245B and l
1-WFPD-HSS-246, respectively.
i snubbers have had their accessible / inaccessible designations Fif ty two Unit changed to reflect current plant configurations.
The possibility of occurrence or the consequences of a malfunction of safety and previously evaluated in the UFSAR is not important to equipment The deletion increased by the addition of safety related hydraulic snubbers.
of the two North Anna Unit I hydraulic snubbers will not increase the consequences of a malfunction of equipment possibility of occurrence or the The because these hydraulic snubbers were analyzed as to not being required.
addition of the exemption to surveillance requirement 4.7.10c increases the surveillance requirements for steam generator / reactor coolant pump support snubbers and therefore increases safety.
The possibility of a different type of accident or malfunction than was previously evaluated in the UFSAR has not been created by the addition and deletion of safety related hydraulic snubbers.
Each snubber that has been added or deleted was either required for system structural integrity or no longer required for system structural integrity.
The addition of the exemption to surveillance requirement 4.7.10c affects snubber surveillance only.
of the The margin of safety as described in the BASES section of any part Technical Specifications is not reduced because of the addition and deletion i
All snubbers ensure that the structural intejrity of of hydraulic snubbers.
the reactor coolant system and all other safety related systems are maintained during and following a seismic event.
The addition of the exemption to 4.7.10c will allow an engineering evaluation to be surveillance requirement performed if c failure occurs on a Steam Generator / Reactor Coolant Pump If the integrity Support Snubber to determine if generic deficiencies exist.
of. other snubbers is suspected, additional samples will be functionally tested.
I i
I I
l
-