ML20128P409

From kanterella
Jump to navigation Jump to search
Forwards Rev 5 to ASME Section XI Relief Request I-00010 Re Inservice Exam of Pressure Retaining Welds.Four Welds Determined to Be Partially Inaccessible Due to Geometric or Access Restrictions
ML20128P409
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 02/18/1993
From: Cottle W
ENTERGY OPERATIONS, INC.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GNRO-93-00021, GNRO-93-21, NUDOCS 9302240284
Download: ML20128P409 (14)
v • d • e


Text

T.

1 h*

-:-=~ ENTERGY i

m t.cout.

1ebruary 18, 1993 U.S. Nuclent l&gulatory Commission fin il Sint ion Pl-137 Washington, D.C.

2fl % 5 Attention:

!)ocu me ti t Cotit r ol liesk

Subject:

Urntel Guli Nuclear St at ion Unit 1 ilocket No. 50-416 I.iconse No. N I'l - 29 ASMI'.Section XI Relief Requent Number 1-00010 Revision 5 GNRD-9 3/ 000 2 )

Gent lemen:

This submit t a l re' pies t n relief from the r equirement s of ASME Sect ion XI, in accordance with 10 CIR 50. % a (g) ($) (iv) nnd 10 C PR 50. 5 5 a ( g ) (6) (J).

A revision of the previously approved relief request is attached.

Four welds have been det ermined to be part inlly innccensible due to geometric or access restrictions.

Therefore, the welds requirnreljeffrom 100'. volumet ric exa m ituit ion.

These velds have been added to Table 1 nn items 74, 75, 76, and 77.

Keller is request ed t o petailt pa r t. f o l exnminntion of t heno volds Addit ionally, Sect ion Vil of the Relie f Kerpiest ; Alt ernat ive Test ing, has been reviserl to preclude examinat. lon of welds cont ained in Table 1 twice during t he ten yent insportton int erval. 1hn redntelant exnminntion tequirement imposes undue hardsh ip wi thout a tennsensuinto increnne in snfety and is lin ens ist ent wit h A1.AKA pr inciples.b 22010de

~

r G9302111/SNI.!CFLK - 1 l

9302240204 930210 l

i PDR ADOCK 05000416

-u PDR i

P

4

- February 18, 1993

_l GNRO-93/00021 Page 2 of 3 Your review and approval of those rnquesta la requested prior to September 1,1993 in order to allow for plantif ug of the upcoming refueling 6

outage, which is scheduled for October 1993.

If you requirn any additional inforsation concerning this matter, please contact 11111 Brico at (601) 437-6556, Yours truly, MYW WTC/WBD/ams attachment: Relief Requnst Number 1-00010 Rnvision 5 cc:

Mr. R. II.11ernhard (w/a)

Mr. D. C. Illntz (w/a)

Mr. R. B. McGehco (w/a)

Mr. N. S. Reynolds (w/a)

Hr. ii.

I., Thomas (w/o)

Mr. Stewart D. F. bunter (w/a)

Regional Administrator

+

U.S. Nuclear Regulatory. Commission.

Region 11 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30323 t

Mr. P. W. O'Connor, Project Manager (w/2) '

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission

-Mail - Stop 13113 Washington, D.C.

20555

+

5 s

l G9302111/SNLICFl.R - 2 4

. = - -

d

GRAND Gutr NUCLEAR STATION IOcorvico Incp0stica C quirenO3to INSERVICE INSPECTION sostica 4

~

Relief Request TEN YEAn PnoonAM GRAND GULF NUCLEAR STATION UNIT 1 l

RELIEF REQUEST I-00010, REVISION 5 l

PAGE'1 OF 4 INSERVICE EXAMINATION DE EBESSURE RETAINING __ WELDS l

I.

Component:

Inaccessible portions of ASME Section III, Class 1

and 2

pressure retaining and integral attachment piping welds listed in table 1 (see attached).

II.

Code These portions of the _ pressure. retaining and integral attachment-piping welds were designed and - fabricated to' ASME Section

III, Class 1 and _ Class 2 requirements..

Applicable inservice inspections 'are to be performed in accordance with the ASME Section XI,_ 1977 Edition,.through and including the Summer 1979 Addenda.

III.

Code Requirements:

Class 1 and Class 2 pressure retaining piping welds are required-to be volumetrically and surface

examined, essentially 100% of the weld, once every ten year interval in accordance with ASME Section XI,. Table IWB-2500-1,- Category B-J, Table IWC-2500-1, Categoly C-F.-

The

-Class 1 integral attachment welds depicted

'in. Table 1 are required to be surface.

examined once each ten. year-interval-in

=r accordance with ASME Section XI, Table IWB-2500-1, Category B-K-1.

IV.

Information to Portions of welds.that. were _ preservice support _the examined have physical obstructions due to-determination'that design._

~ Due, to

.this limited the code accessibility,-

it is impractical to requirements are perform. the-surface and volumetric' impractical examination for 100%

of-the-required examination volume as indicated for the welds listed in Table l.

V.

Specific Relief Permission is requested to perform the Requested:

Code. required examinations to the maximum 1

practical extent as described.in'. Table 1.

t H:\\ MECH \\ HUNTER \\ RELIEFS \\RR10R4TX.010-l

-. =

= -

- ~. ~ -.

GRAND GuLr NUCLEAR STATION Incorvico Incp0ctica acquirOccato INSERVICE INSPECTION SOctica 4-Relief moquest TEN YEAn PaoonAM GRAND GULF NUCLEAR-STATION UNIT 1 RELIEF REQUEST I-00010, REVISION 5-

-PAGE 2 OP 4 IFSERVICE EXAMINATION i

QE PRESSURE RETAINING WELDS l

VI.

Reasons why relief Request for permission to limit'the code should be granted required examination to' the accessible areas should be granted for the following reasonst 1.

The inaccessible. portions - of - listed pressure retaining welds

_ were examined by radiography, _ passed _ in accordance with ASME Section -III, class 1-and 2 requirements.

2.

The -inaccessible portions _ of the pressure retaining and integral.

attachment welds were surface examined (magnetic particle or liquid-penetrant), passed in accordance with ASME III and/or XI, Class 1 and Class 2 requirements.

3.

The inaccessible portions of listed piping welds ~ will be subject.to a system leakage test after each refueling outage for _ Class 1,

and each inspection period for Class. 2 in accordance with ASME Section XI requirements.

4.

The inaccessible portions of listed piping welds will be subject to a system- _ hydrostatic-test each inspection interval in 'accordance with ASME Section XI, Class 1.and 2 requirements.-

5.-

_ Accessible portions of listed welds

.will _be volumetrically and surface examined:each-inspection interval 41n accordance -with -ASME-Sectioni XI.

Should-indications.be

found,

-an engineering evaluation willL be made to determine if the-inaccessible portions of the listed w e l d s _- h a v e been.affected.

M:\\ MECH \\ HUNTER \\REllEFS\\RR10R4TX_.010

GRAND GULF NucLEAn STATroN Inocryico Incpostion R0guircOOnto 8

MCn INSERVICE INSPECTION

.,,1g g,equest TEN YEAR PROGRAM GRAND GULF NUCLEAR STATION UNIT 1 j

RELIEF REQUEST I-00010, REVISION 5-i PAGE 3 OF 4 INSERVICE EXAMINATIQ11 DI PRESSURE RETAINING WELQS VI.

Reasons why relief 6.

Leak detection is provided, by way of should be granted the leakage detection system with (continued):

continuous monitoring, for the RHR,

RCIC, MS,
RWCU, RECIRC and FW systems.

7.

The failure of any one of these pressure retaining piping welds would have no adverse effect or reduction in the margin of plant-safety since there is isolation capability and/or shut down capability as part of the plant design.

The design analysis bounds the limiting-fault conditions

-for line breaks in ' and - outside of containment.

8.

The calculated.

maximum piping stresses and -usage _ factor at~ the integral attachments on the piping, including consideration'of the local' pipe wall

. stresses, have-been determined in the Class 1

Stress Report ~

and are equal' to the following:

a)

Primary plus secondary (equation

10) ; 32,775 psi (1.72 S ),-

b) usage. factor is 0.04'2.

4 Circumferential and longitudinal welds in piping ' with - stress - levels-below 2.4 S, and usage factors below-

-0.4 are excluded

-.from'

ISI examinations,

.in _ accordance' 'with Table IWB-2500-1 Category B-J.-

J 9.

Examinations-at GGNS of~ category B-J, B-K-1 and C-F welds have ' not identified any flaws or evidence of l

service _inouced degradation.

M:\\ MECH \\ HUNTER \\ RELIEFS \\RR10R4TX.010i u.~c~......

l GRAND GULF NUCLEAR STATION InCOrvic3 ICCpOctiC3 Requirem 2to 805tica 4

. INSERVICE INSPECTION Relief Request TEN YEAR PROGRAM GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST I-00010, REVISION 5 PAGE 4 OF 4 INSERVICE EXAMINATIOl{

0.E PRESSURE RETAINING WELDS VII.

Alternate testing:

The applicable welds will be examined to the maximum extent practical as determined by the extent of the specific limitation.

Each weld wil!

be subjected to a

volumetric or surface examination as required by Tables IWB and IWC 2500-1 VIII.

NRC discussion "The staff has reviewed the information statement submitted which supports the licensee's (revision 4) :

conclusion that the Section XI ASME Code requirements are impractical for the piping welds identified in Table 1 due to inaccessibility of portions of the welds.

Compliance to the Code requirements would require the redesign and refabrication of the piping system to eliminate physical obstructions due to pipe supports, pipe

fittings, and components.

The proposed alternative limited volumetric examinations along with the Section XI ASME Code surface examinations and the hydrostatic tests, ensure an acceptable level of inservice structural integrity.

The licensee concludes, and the staff agrees, that relief should be granted as requested in Relief Request No. I-00010, Revision 4.

i 1

I l

H:\\ MECH \\ HUNTER \\REllEFS\\RR10R4TX.010

w Inservice Inspection Requirements GRAND GULF NUCf. EAR STATION i

Section 4 INSERVICE INSP' CTION Relief Request TEN. EAR PROGRAM g

GRAND GULF NUCLEAR STATION UNIT 1 REL1EF REQUEST NO.

00010 REVISION 5 TABLE 1 EXAM!MABLE EXAMINABLE ITEM No SYSTEM VELD 150 PIPE VOLUMETPIC TYPE SURFACE VELD REASOM FOR NO NO M0 SIZE CnMPONENT AREA SCAN AREA CLASS TYPE LIMITATIONS 1

E12 6014-FV-44 RH-3-8 6"

VALVE TO ELBOV 55%

T 100%

1 CIRC ELBOW RADIUS 2

B21 63-Cl-B-L/B MS-11-8 28" ElPOW SEAM 38%

T 38%

1 LONG PIPE RESTRAINT 3*

E51 6004-8-8-1 RI-9-2 6"

ELBOW TO ELBOW 70%

T 100*>

2 CIRC

'LBOW RADIUS 4

B21 Gil-DI-B-L/B MS-11-11 28" itBOW SEAM 38%

T 39%

1 LONG PIPE RESTRAINT S _ b B21 G8-Al-B-L/B MS-11-2 28" ELBCJ SEAM 38%

1 38%

1 LONG PIPE RESTRAINT 6

l B21 6030-FW-23 FW-8-2 24" VALVE 3 81PE 93%

T 100%

1 CIRC SDCK-0-tET 7

B?1 6030-FV-35 FW-B-4 24" VALVE TO PIPE 93%

T 100%

1 CIRC SOCK-0-LET 8

B21 6026-FV-17 FV-11-7 24*

PIPE TO TEE 93%

T 100%

1 CIRC SOCK-0-LET 9

B21 6001-W4 MS-11-3 2B"

/ALVE TO PIPE 82%

T 100".

1 CIRC PIPE RESTRAINT 10 B?)

G001-W4 MS-11-9 28" VALVE TG ELBOW 82Y T

100%

1 CIRC PIPE RESTRAINT 11 B21 G9-Cl-B-L/A -

MS-Il-8 28" ELBOV SEAM 38%

T 38%

1 LONG PIPE RESTRAINT DELETED l

  • Under the rules of IWC-5210(a), this weld is not subject to system hydrostatic testir.g, item 4 under "Reasor.s why relief should be granted" does not apply to this weld.

a'

'4

.-r 4

n,.

. i
GRAND'GifLF NUCLEAR STATroN:

Inservic Inspection m.quirentents Section 4

. INSERVICE' INSPECTION

TEN' YEAR PaocnAM' GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 4

EXAM!iiABLE

- EXAMINABLE j

ITEM NO SYSTEM '

WELD 150

' PIPE VOLLMETRIC-TYPE SLRFACE WELD REASON FOR fe0

- NO NO.

SIZE.

COMP 0 MENT AREA SCAN AREA-CLASS' TYPE LIMITATIONS ~

?

13*

E51 '

6004-7-8-4 RI-8-1 10" REDUCER TO iEE' 71%-

T 100%

2 CIRC-

' TEE' j

'i 14*

E51 GD04-7-8-9 R1-8-1

' 10~

REDUCER 10 TEE 71%

-T

.00%

2 CIRC TEE 15*

ESI G004-7-8-8 RI-8 ' 10" REDUCFR 70 TEE 71%

T 100%

2 i' CIRC

-TEE '

7 16' B33 G024-W2 RR 11-13 4*

ELBOW TO TEE 62%

1 100%

1 CIRC-TEE i

17 G33 G002-V179 CU-8-7 4"

ELBOV TO FITT.

63%

T EA 1-C!RC ELBOW RADIUS' 15 B21 611-01-B-L/A' MS-11-11 28' ELBOW SEAM 18%

T 38%

1 LONG-PIPE RESTRAINT 19 '

B21 C001-V9 MS-11-12 28' -

VALVE TO PIPE 82%

T 1000 1

CIRC PIPE RESTRAINT

[

20 B11-

'G8-Al-B-l/A MS-11-2

'28'

' ELBOW SEAM 38%

T 18%

-1 LONG-P!PE RESTRAINT 21' E51 6001-VI RI-8-12 6"

VALVE TO ELBOW 73%

T 100% -

2 CIRC' ELBOW RADIUS 1-22 ESI

' 6001-W40

- RI-11-4

' 6" valve TO ELBOW 73%

T 100%

1 CIRC

= ELBOW RADIUS -

1-833 6001-V5 RR-11-2

-24" ELBOW TO PUMP 73% see rete 1 T

100%

1 CIRC PtMP -

23 l

CIPC Pumr '24-633 -

G001-V6

- RR-11 24"'-

PIPE TO PUMP 58% see note 1 T

100%

1

'Under the rules of IWC-5210(a).: this weld Xs not subject to systen hydrostatic testing. Item 4 under " Reasons why reitef should be granted

  • does not apply to l

this weldJ

. a P

e m'

t

__-,,4

',3 w

g,,

"p-d T "

?

wy y ye y

vy-wI-g y k

y y

q p.

y u.,

-.,7-g y.

y-9 m

s_

- g

l

.GRANo'Gutr NUCLEAR STATION Inservice Inspection Requirements Section 4 INSERVICE INSPECTION TEN YEAR PROGRAM GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 ElaMINABLE EXAMINABLE ITEM NO SYSTEM WELD 150 PIPE VOLIJMETRIC AREA TYPE SURFACE VELD REASON FOR NO NO NO SIZE COMPONENT SCAN AREA CLASS TYPE LIMITATICMS 25 833 G001-V8 RR-11-3 24" VALVE TO PIPE 50% see note 2 T

100%

1 CIRC VALVE 26 B33 6001-W28 RR-1;-9 24" ELBOW TO PUMP 62% see note 1 T

100%

1 CIRC PtNP 27 833 Gr11-V29' RR-11-9 24" P W TO PIPE 61% see note 1 T

100%

1 ClY PtMP 28 B33 G001-W31 RR-II-10 24" VALVE TO PIPE-50% see note 1&2 T

100%

1 CIRC VALVE

[.

a 29 B33 G5-B1-8 RR-11-9 4"/24" SFEP TO PIPE 59% see note 1 T

I 100%

1 BRANCH SWEEP-0-LET 30 B33 GS-BI-E RR-11-9 4"/24" SWEEP TO PIPE 63% see note 1 T

100%

1

' BRANCH SEP-0-L ET 31 B33 G023-W37 RR-11-15 20" TEE TO PIPE 65% scs note 1 T

100%

1 CIRC TEE 32 B33 G024-We RR-11-16 4"

PIPE TO SWEEP 50% see note 2 T

100%

1

' CIRC SWEEP-0-LET 33 633

' G024-W27 RR-11-17 4"

PIPE TO SWEEP 50% see note 2 T

100%

1 CIRC S1EEP-0-LET 34 B33 G10-B1-L RR-11-11 12"/16" SWEEP TO PIPE 50% see note 3 P

100%

1

' BRANCH SVEEP-0-LET 35 B33 G10-B1-K RR-11-11 12"/16" SVEEP TO PIPE 50% see note 3 P

100%

1 BRANCH SVEEP-0-LET 36 B33 GIO-BI-J -

RR-11-11 12"/16"

$ WEEP TO PIPE 1 50% see not? 3 P

l 100%

t 1

BRANCH SWEEP-0-LET

.. l.-

.j Inservice Inspection Requirements GRAND GULF NUCLEAR STATION Section 4 INSERVICE INSPECTION TEN YEAR PROGRAM I

GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 i

l TABLE 1 EXAMINABLE EAAMINABLE ITtM NO SYSTEM VELD 150 PIPE VOLUMETRIC TTPE SURFACE VELD REASON FOR NO NO NO SIZE COMPONENT ARIA SCAN AREA CLASS TTPE LIMITATIONS 37 B33 GIO-BI-H RR-11-il 12"/16" SVEEP TO PIPE 50% see note 3 P

100%

I BRANCH SWEEP-0-tET 38 B33 GIO-B1-G RR-II-Il 12"/16" SVEEP TO PIPE 50% see note 3 P

1007 1

BRANCH SWEEP-0-LET 39 B33 G10-B1-F RR-11-11 12"/16" SWEEP TO PIPE SO% see note 3 P

100%

1 BEANCH SVEEP-0-LET 40 B33 6001-V34 RR-11-11 24" PIPE TO CROSS 50% see note 3 P

100%

1 CIRC CROSS I

41 l

833 G10-B1-A RR-11-11 16" PIPE TO CROSS S0% see note 3 P

100%

1 CIRC CROSS

~

l 42 B33 G10-BI-B RR-II-11 16" PIPE TO CROSS 50% see no+e 3 P

100%

1 CIRC CROSS 43 B21 G8-Al-C MS-II-2 8'/28" SWEEP TO PIPE

'100%

T 98%

1 BRANCH PIPE SUPPORT 44 821 u026-V36 FV-11-!

24" PIPE TO VALVE 95%

T 100%

1 CIRC PIPE SUPPORT 4S-B21 G8-Al-L.M,N,P MS-11-2 28" LUGS TO PIPE N/A N/A 49%

1 INT ATT PIPE RESTRA73T 46 B21 G10-B1-L M,N,P MS-11-5 28" LOGS TO PIPE N/A N/A 49%

1 INT Ari PIPE RESTRAINT I

47 B21 G3-Cl-L.M N,P MS-11-8 28" LUGS TO PIPE N/A N/A 49%

1 INT ATT PIPE RESDAINT 48 B21 Gil-DI-L,M,,N P Mi-II-11 28" LUGS TO PlPE h/A N/A 49%

I INT ATT PJPE RESTRAINT N

l

ay

. i%

i

.~

GRAND GULF NUCLEAR STATION Inservice Inspection Requirements Section'4 INSERVICEilNSPECTION TEN ~ YEAR PROGRAM GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 i

_ i g

EXAMINABLE EAAMINABLE ITEM NO SYSTEM WELD 150 PIPE VOLLs4ETRIC TYPE SURFACE VELD REASON FOR._

NO

-h0 NO '

SIZE C9MPONENT-AREA ^

SCAN AREA CLASS TYPE LIMITA1 IONS l

49 B33 '

G00lW27

- RR-11-9 24" PIPE TO WALVE 50% see mte 1 T

100%

1 CIGC '

VALVE' I

50 633 '

G00!V33 RR-11-10 24" VALVE TO PIPE-50% see note 1 T

100%

1 CIRC

' VALVE 51 B33 G10-Al-A RR-11-4 16" CROSS TO PIPE SC% see note 3 P

10J%

1 CIRC CROSS-52 B33 G10-Al-B RR-il-4 16" CNOSS TO PIPE 50% see note 3 P

100%

1 CIRC CROSS

' 53 B33 G6-Bi-C '

RR-11-9 4"/24" PIPE TO SVEEP 50% see note 1 T

100%

1 BRANCH' SWEP 54 B33 G10-Al-F RR-11-4 16"/12" P1PE TO SVEEP 50% see note 3 P

100%

1

~ BRANCH ~

SWEEP -

55 B33 GID-Al-G' RR-11-4 16"/12" PIPE TO SWEEP 50% sae note 3 P

100%

1 BRANCH SWEEP

-56 833 G10- Al-H -

RR-11-4 16"/12"'

PIPE TO SVEEP 50% see note 3 P

' 100%.

1 BRAKCH

' SWEEP' 57 C33 G10-Al-J RR-11-4 16"/12" PIPE TO SWEEP 50% see note 3 P

100%

1 BRANCH SWEEP 58' 633 E10-Al at

' RR-It-4 16"/12"~

PIPC TG SWEEP 50% see note 3 P

100%

1 BRANCH SWEEP 53 '

- B33 G!O-Al-L RR-11-4 16*fl5" PIPE TO SVEEP' 50% see rete 3 P

1001 1

BRANCH SWEEP i

- 60 '

833' G001W4 PR'-i t-2 ~ l 24" VALVE TO PIPE 50% see note 1 T

1001 1

CIRC VALVE

+

4 ens y

4 g y

'T

- mi'(

p ie-e W

e-a*-

e

< = -

iei-

v GRAND GULF NUCLEAR STATION Inservice Inspection Requirestents Section 4 j

INSERVICE' INSPECTION l

~ TEN YEAR PROGRAM GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 EXAMINAS'E EXAMINABLE l

ITEM NO SYSTEM WELO 150 PIPE VOLUMETRIC TYPE SURFACE WELD REASON FOR j

NO NO NO SIZE COMP 06ENT AREA SCAN AREA CLASS TYPE t.1MITATIONS 61 233 G001W9 RR-II-3 24" PIPE TO VALVE 50% see note 1 T

10C7 1

CIRC VAtVE 62 ~

B33 600lW10 RR-11-3 24" VALVE TO PIPE 50% see note 1 T

100%

1 CIRC VALVE

~

63 B33 G6-Al-C RR-ll-2 4"/24" PIPE TO SWEEP 50% see note 1 T

100%

1 BRANCH SWEEP 64 B33 GS-Al-E

-RR-11-2 4"/24" P!PE TO SVEEP 50% see note 1 T

100%

1 MANCH SWEEP 65 B33 GS-Al-B RR-11-2 4"/24" PIPE TO SWEEP 50% see note 1 T

100%

1 BRANCH SVEEP 66 821 Gil-DI-C MS-11-11 26"/!C" PIPE TO SVEEP

$7%

T 97%

-1 BRANCH HANGER 67 Bil G10.81-C MS-11-5 28"/10" P!PE TO SWEEP 71%

T 100%

1 BRANCH

-HANGER i

68 B21 Glo-B1-E MS-II-5 28"/10"

' PIPE TO SVEEP 71%

T 85%

1 BRANCH' HANGEP 69 B21 G10-PI-F MS-11-5 28"/10" PIPE TO SWEEP 78%

T 100%

1 EAAMCH HANGER 70 E21 G10-31-H MS-11-5 28"/10" PIPE TO %TEP 78%

T 100%

-1 BRANCH HANGER 71 821 GIO-RI-G MS-11-5 28"/10" PIPE TO SWEEP 78%

T 100%

1 BCANCH HANGER

'72*

Est G004W18 RI-8-21 6"

VALVE 70 PIPE 83.18%-

T 100%

l 2

CIRC PIPE RESTRAINT i'

'Under the rules of IWC-5210(a), this weld is r.ot subject to system hydrostatic testing. Iters 4 under " Reasons why relief should be granted" does not apply to this weld.

l I

l l

I GDAND GULF NUCLEAR STATION l

Inserv!ce Inspection Requirements Bection 4 INSERVICE INSPECTION

'j Tete YEAR PROGRAM Relief Request r-GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 i

EXAMINABLE EXAMINABLE ITEM

$YSTEM WELD 150 PIPE VOLtMETRIC TYPE SURFACE AREA VELD AIA%N FOR NO NO NO NO SIZE COMPONEkT AREA SCAN CLASS TYPE LIPITATIONS 73 G33 G012V54 C 13 6"

YALVE TO ELBOW 85.53%

T 100%

I CIRC ELBOW RADIUS -

74 821 GOO 1V5 MS-11-9 28' VALVE TO PIPE 62.8%

T 100%

1 CIRC VALVE 75 B21 G001V10 MS-11-12 28" VALVE TO PIPE 80.8%

T 100%

1 CIRC VALVE 76 B33 G001W3 RR-11-1 24" ELBOW TO VALVE 30.0%

T 100%

1 CIRC VALVE 77 633 G001V26 RR-11-8 24" ELB0V TO VALVE 50.0%

T 100%

1 CIRC VALVE l

l M : \\TCN \\t EWI S \\M489-1 \\R R 10R 4 T 8. 010

_m GRAND GULF NUCLEAR STATION Inservice Inspection Requirements Section 4 INSERVICE INSPECTION TEN YEAR PROGRAM i

GRAND GULF NUCLEAR STATION UNIT 1 RELIEF REQUEST NO. I-00010 REVISION 5 TABLE 1 LEGEND:

P = SCAN PARALLEL TO THE WELD T = SCAN TANGENT (PERPENDICULAR) TO THE VELD NOTES 1.

In addition to the "T" scan limitation, these welds cre augmented by the requirements of fiUREG 6313 and therefore are examined =1th a parallel scan that is not required by ASME Section XI. The parallel scan is limited to one side of the weld (50%) due to *he fittlags being joined by the weld.

2.

100% coverage was obtained in one direction only, using refracted kngitudir.al wave.

3.

The "P" scan is perfonned for compliance with NUREG 0313, 100% of ASME Section XI coverage is obta.ned without limitation.

9 I

..M:\\ MECH \\ LEWIS \\M489-1\\RR10R4TB.010

..u-.

+

Retrieved from "https://kanterella.com/w/index.php?title=ML20128P409&oldid=4255058"