ML20117N915
| ML20117N915 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 05/10/1985 |
| From: | Poindexter C BALTIMORE GAS & ELECTRIC CO. |
| To: | John Miller Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8505200256 | |
| Download: ML20117N915 (5) | |
Text
(
E BALTIM ORE GAS AND ELECTRIC CHARLES CENTER P.O. BOX 1475 BALTidORE, MARYLAND 21203 CHRis H. POINDEXTER May 10,1985 a
vice eac ocN, ENGINecRING AND CONSTRUCTION i
U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C. 20555 ATTENTION:
Mr. James R. Miller, Chief Operating Reactors Branch #3 Division of Licensing
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.' I & 2; Docket Nos. 50-317 & 50-318 Inservice Inspection Program Request For Relief from ASME Code Section XI Requirements Determined to be Impractical
-Gentlemen:
In accordance with 10 CFR 50.55 a(gX6XI), we are requesting an exemption from ASME Code Section XI requirements that have been determined to be impractical.
In accordance with the NRC Staff Guidance letter dated November 2ts, 1976, the information concerning the exemption request is presented herein.
Subsequent to the modification of 3" diameter, Class 1, stainless steel piping for the relocation of pressurizer spray valves, number 1-CV-100E and 1-CV-100F, four welds were inaccessible for proper radiographic examination per Code requirements.
An acceptable radiographic examination of the four pipe-to-pipe welds is impossible due to the angle and distance of the radiographic beam required to clear interferences around the pipe. The Commission is requested to exempt the requirements for performing a radiographic examination in this particular case.
The attached Isometric sketches provide a detailed description of the location of the four welds.
8505200256 050510
$g[Y PDR ADOCK 05000317 G
PDR l
t t
e Mr. James R. Miller May 10,1985 Page 2 A tabulation of the information required for this request is presented below:
I.
COMPONENT FOR WHICH RELIEF IS REOUESTED A.
Name and Number Piping line numbers 3"-CC-Il-1001 and 3"-CC-II-1002 are the inlet piping lines to 1-CV-100E and 1-CV-100F respectively, from the Reactor Coolant System (RCS) cold legs.
These lines are shown as 3"-CC-II-1001 and 3"-CC-11-1002 in Figure 4-1 (E-8) of the Updated Final Safety Analysis Report. The subject welds are identified in the Inservice Inspection Program as numbers 100lM-21,1002M-25,1001-15A, and 1002M-19A (see Attachments)
B.
Function The primary function of these lines is to provide relatively cool reactor coolant water to the pressurizer spray header to control pressurizer pressure under normal operations. The modification that resulted in the inaccessible welds relocated the spray valves 1-CV-100E and 1-CV-100F to the roof of the pressurizer enclosure.
This modification will allow Operations and Maintenance personnel to adjust actuators, inspect and work on these valves outside of the pressurizer enclosure environment.
C.
Code Class Regulatory Guide 1.26: Class 1 OrigJna! Design: B.31.7 Class 1 II.
CODE REQUIREMENT FROM WHICH RELIEF IS REQUESTED The modification was performed in accordance with ASME Code Section XI 1974 Edition with Addenda through Summer 1975. As required by ASME Code Section XI IWA-4100(c), the modification was performed in accordance with the Code applicable to the construction of the system. USA Standard B31.7-1969 with 1970 Addenda has been adhered to with the exception of a radiographic examination meeting Code sensitivity requirements on the four welds,100lM-21,1002M-25, 1001M-15A, and 1002M-19A, for which relief is requested.
III.
SUPPORTING INFORMATION An acceptable radiographic examination of the four welds is impossible due to the angle and distance of radiographic beam required to clear Interferences such as other pipes and supports in the vicinity.
r Mr. James R. Miller May 10,1985 Page 3 IV.-
IN LIEU OF TESTING The following non-destructive examinations will be performed in lieu of the radiograph:
A.
Ultrasonic Examination B.
Liquid Penetrant Examination C.
Radiographic Examination of Root Pass (Non-code Requirement)
D.
Best Possible Radiographic Examination of Final Pass E.
Hydrostatic Pressure Testing in accordance with ASME Code Section XI We have determined that this request constitutes an amendment for Calvert Cliffs Unit No.1, pursuant to 10 CFR 170.21. Accordingly, Baltimore Gas & Electric will forward a check under separate cover in the amount of $150.00.
Should you have further questions regarding this matter, please do not hesitate to contact us.
Very truly yours, f
AEL/MSK/BCR/MTF/sjb Attachments cc:
D. A. Brune, Esquire G. F. Trowbridge, Esquire D. H. Jaffe, NRC T. Foley, NRC T. Magette, DNR
E 5=
29 0
g 28BC s 4-PS-1003M $
3-PS-lOOI-23 g
s co I-CV-lOOE 28 g
4 3-PS-1001-22,
z i
1
=
5 e
7 25BC s E
i
~
26 d
2 o 3 25 s
e m
=
=
24 23 y
j s g
$ s b o B 22 T;L al 3=
PZR HOUSING 2
19 17 18 ol6 g;q#'
3-PS-100lM
- Ig AfyerAP j#3-3-PS-1001 t
15 fo3 15<>
14 PR l 2,3 14o 12 10 il 8 Pt. 5 8 9
SPLl-4 SP3 l-4 88CI"4 apg.2 8PR-1 8
7 os h
2 i
S.
5 3
3PR I
I 4 ?
5 5
2 P
"s
~
~
~
~
- i s4Pe cud
/
M 30"10 PRIM AR Y LQQP llA
.a O d PUMP TO RPV 3" NOZZLE
.$.$ Q Y
. u s
O p-e w$
3 a s i s J 8 E E 5
A-21
(
g z
5 e_
c:
4-PS-LOO 3M 32 5
28 o
1 27BC "29
[-
m9 o
s 5
i
?
3-PS-LOO 2-27
.,30 y
m-27 3I U
0
~
1-CV-LOOF e
y n
y 3 E E a
t e e a g 3-PS-LOO 2-26 26 g g g g 8 m
A TQ25BC 2 $-
PZR HOUSING 2
i.
I 8
23 21 8
5 e8J'n3 22 20 I
3-PS-LOO 2M (A)*I4 ngym?"on f,
3-PS-LOO 2 (O
>l9 4
E g
w f $ $ !
018 u
.J m
gg m
=
E m 2 2 Q J gg
[ @ $ $ 2 6 14 PR-l& 2 s
14 PL 5-8 14 i 4 PL i-4 ol2 10PR 1,2,3e4 10 10PS l-2 x
9PR **
- >S 5
4 o
3 T
SAFE END 6
2
'I,A p'
3" NOIILE 30" 10 PRIM ARY LOOPllB PUMP TO RPV A-22
- - - - ---