AECM-84-0257, Forwards Sample Plan for Selection of Pipe Supports to Be Subj to 10-yr Inservice Insp Plan,Per ASME Boiler & Pressure Vessel Code,Section Xi.Plan Does Not Encompass Snubbers. Review by 840601 Requested

Forwards Sample Plan for Selection of Pipe Supports to Be Subj to 10-yr Inservice Insp Plan,Per ASME Boiler & Pressure Vessel Code,Section Xi.Plan Does Not Encompass Snubbers. Review by 840601 Requested

ML20084L724
Person / Time
Site:	Grand Gulf
Issue date:	05/11/1984
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
AECM-84-0257, AECM-84-257, TAC-55522, TAC-55524, TAC-57222, NUDOCS 8405150003
Download: ML20084L724 (11)

Text

,

+

MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B O X 164 0, J AC K S O N, MIS SIS SIP PI 3 9 2 0 5 May 11, 1984 NUCLEAR PRODUCTION DEPARTMENT U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D.C. 20555 Attention: Mr Harold R. Denton, Director

SUBJECT:

Grand Gulf Nuclear Station Units I and 2 Docket Nos. 50-416 and 50-417 License No. NPF-13 File 0260/L-860.0/L-952.0/M-189.0 Inservice Inspection to ASME Section XI AECM-84/0257 This letter transmits the sample plan for the selection of Grand Gulf Nuclear Station (GGNS) Unit 1 pipe supports that shall be subject to the ten year inservice inspection plan to comply with the ASME Boiler and Pressure Vessel Code,Section XI, 1977 Edition with Addenda through and including Summer of 1979.

The attachment delineates the criteria which shall be used for the selection of ASME Section III Class 1, 2 and 3 pipe supports requiring inservice inspection.

This sample plan, however, does not encompass snubbers since the safety related snubbers on ASME Class 1, 2 and 3 piping shall be subject to examination and operability testing in accordance with surveillance requirements described in GGNS Unit 1 Technical Specifications, Section 3/4.7.4.

Please review the attached information by June 1,1984, so that the ten-year inservice inspection plan can be submitted to you by August 1, 1984.

If you have any questions or require further information, please contact this office.

Yours truly,

\( -)

8405150003 840511 PDR ADOCK 05000 go (

Manager of Nuclear Services ,

GS/JGC:1m

Attachment:

Sample Plan for Pipe Supports cc: (See Next Page)

FS1 Member Middle South Utilities System

~

AECM-84/0257 MISSISSI'PPI POWER C1 Ll*2HT CCMPANY Page 2 cc: Mr. J. B. Richard (w/a)

Mr. R. B.' McGehee (w/o)

Mr. G. B. Taylor (w/o)

Mr. Nicholas S. Reynolds, Esq. (w/o)

Bishop, Liberman, Cook, Purcell & Reynolds 1200. Seventeenth Street, N.W., Suite 700 Washington, D.C. 20036 Mr. J. P. O'Reilly, Regional Administrator (w/a) -

U.S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30303 Mr. J. F. Cook (w/a)

EG&G Idaho Co., Inc.

Willow Creek Building Idaho Falls, Idaho 83401 Mr. Martin Hum (w/a)

Materials Engineering Branch U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D.C. 20555 Mr. D. R. Bivins (w/a)

Lead A/I Kemper Insurance Company 1

FS2

i  ;

x  !

amo aaI, Nucrm erIcu  ;

PAGE 1 f UNIT 1 SAMPLE PIAN POR PIPE SUPPORPS l f

1.0 SCOPE [

his doctanent describes the sanple plan that shall be used in selecting pipe supports that shall be subject to ISI. l f

his sanple plan is limited to pipe supports as defined in the Subsection l IWF of the ASME Boiler and Pressure Vessel Code Section XI, 1977 Edition through and including 1979 Summer Addenda. This sanple plan does not i cover snubbers, as all safety related snubbers on ASME Class 1, Class 2, and Class 3 piping are subject to examination and operability testing as per surveillance procedures described in omis Unit 1 Operating License Manual Section 3/4.7.4.

2.0 EXEMPTION CRITERIA

%e sample plan for pipe supports shall exclude following supports:

2.1 Pipe supports on ASME Section III Class 1 piping 1" nps and smaller.

Also, pipe supports on piping 2" nps and smaller inaccessible due to a control red drive penetrations.

I 2.2 Pipe supports on AEME Section III Class 2 and 3 piping 2" nps and smaller.

! 2.3 Pipe supports buried or encased in w ete or within guard pipes.

3.0 PEREDIOSNCE CRITERIA POR ' HIE SAMPLE PIAN The performance criteria for the sampling plan is that it shall provide 95 percent confidence that a support population which contains 10 percent or

- more defective supports will be rejected (i.e. 95/90). This criteria will

- be satisfied over the ten-year interval of this plan

4.0 SUPPORT CATEODRIES i

me pipe supports to be inspected as per this sanple plan shall be grouped by the support types such as spring, anchor or rigid. Where a support is constructed from more than one support type, each type shall be listed sith its respective category. Rigid supports shall be further divided into

, standard couponents and frane type supports, based on their assembly details. Further, all groups shall be subdivided into Class 1, and Class 2 or 3, based on the piping mde class. W e supports on pipe Class 2 and 3 i shall be placed into the same category since their design, fabrication and installation requirements are similar.

5.0 SAMPLING PIAN A single stage sanpling plan shall be selected. The size of the sanple for such a plan depends upon the population size and the maxistuu nunber of rejects permitted in the sanple. The sanple size is based on ic population distribution. For large populations, the sanple

~

GRAtt GULF NUCLEAR STATION .

(251T 1 PAGE 2 SAMPLE PIAN POR PIPE SUPPORTS t f

permit 1 or more defective supports, while for small population (less than  !

wwdmately 50) a zero defective support shall be allowed within the  !

sample selected. A typcial example of such a sanpling plan is shown in Attachment #1.

i 6.0 SE[ ACTION OF SUPPORF SAMPIES

'Ihe selection of supports for each sanple shall be head on a rande [

basis. 'Ihe population in each support category shall be assigned randam indices. Frm each population category, the required nuptier of samples shall be drawn randtsnly. 'Ihis sanple selection shall be perforned using a r subroutine from the International Mathematical and Statistical Ilbrary, j which generates the specified nunber of sanple indices (equal to the sanple  ;

size) fra a given population size. 'these sanple indices shall be then i matched with the indices in the C;-- ding population to arrive at the l supports to be inspec.:wi. -

[

Attachnent #2 is an example of the selection of rande sanple indices and sanple supports.

7.0 EKAMINATION [

f The pipe support sanples selected shall be examined once during the ten  :

year interval. 'Ibe sample size in each support category shall be  !

scheduled over three inspection periods, in accordance with ASPE Section XI J Tables IND-2412-1 and INC-2412-1. 'the results of the examination shall be }

evaluated in accordance with A!BE Section XI. (

i 8.0 ADDITI(21hL EXAMINRfrIONS ,

8.1 In the event that the ramber of unacceptable supports exceeds the i permissible reject Invel, additional examinations shall be made. 'Ihe additional examinations shall be conducted in accordance with a sanpling appropriate for the population size of the original sanple.

8.2 For small populations (less than approximately 100), when the nunber  !

of cumtlative defectives avn==da the acceptance rumber, the entire i population shall be examined.  !

, j 8.3 For large populations, upon gletion of the inspection of the  !

initial sanple and their evaluation, additional sanples shall be t generated for 181. 'the size of these additional samples will be l

l determined haamd on the evaluation of the defects recorded in the {

sanples examined. If the nature and origin of the defect can be  ;

~

i established, all pipe a with similar possible defects shall be f examined. For the case such trend cannot be established, the additional aseples will be determined by the initial acceptance mmber (

! and the total rumber of defective supports recorded in the sangles -

examined. 'the equation that shall be used to generate the additional aanpie sine in provided in Attachnent #3. '!he use of the equation j i witi a typical exanple is also explained. [

i  :

I

! l t

GRAND GULF NUCLEMt STATION LNIT 1 PAGE 3 SAMPLE PIAN FOR PIPE SUPPORTS 9.0 ATTACH 4ENIS 9.1 Attachnent il - Supling Plan for Pipe Supports Subject to ISI

~

9.2 Attachment #2 - Selection Process for Pipe Supports 9.3 Attachment #3'- Equations for Additional Suples t

4

A II N GLP NUCLEAR STAMm UNIT I SAMPLE PINI EOR PIPE SUPPORTS TABLE #1 SAMPLING PLAN FOR PIPE SUPPOlYIS SURTECT 'IO ISI Support Population Sanple No of Defects No. Category Size Size Accept Reject ASME Class 1 1 Spring 69 40 0 or 1 2 2 Rigid (Std. Ccmp) 40 21 0 1 3 Rigid (Free) 85 40 0 or 1 2 A!NE Class 2 & 3 4 Spring 74 40 0 or 1 2 5 Anchor 66 40 0 or 1 2 -

6 Rigid (Std. Canp) 712 100 5 or less 6 7 Rigid (Frame) 638 100 5 or less 6

h. _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ _ . _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ . _ _ . _ . _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ . _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ . _

ATTACHMENT #2 PAGE 1 of 4 I. O*

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C ALctsL ATIcrwn. NC=u1111=84013 REY. D CALCuLaTIQu my SHTAM KuMAR========= VERIFIED BY ===*==============

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. GR AND GULF NUCLE AR ST47 ION =UMIT7

) .

POPULATION DF PAPE SUPPORTS FOR IS!

, iagtr. ga iPRIM M UPPURT31 PIPE =CI;453 !J

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8Mda WAMuun 373 -~HL 0*G.MO. ----- PIPE SUPPORT NO PIPE SIZE PIPE CLASS LIhE NO. STRESS PSUR NEMARES Q IhDICES - INCH--^~ -

~-

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L 2 55 B21 h002=769E453 U1521G006H1018 28 ==4 R NX M air 57misRE F11RN.

3L 3 19 B21 G002=769E453 01b21G006H102n 28 ==4 R M4 MAIN STu=mE FHRN.

L 4 35 621 G002=769E453 G1521G006H101C 28 ==A R N4 MAIN STM RE FHRN.

O - 5 34 eg1 '-- G002-769E453 Glo21G006H102C 24 ==4 -C N4 HAIM STM=RE FHRN.

}W 6 57 b21 G002-769E453 01821G006H1010 28 ==A n M4 n41N S7m nE FilNN.

J 7 1 821 1328J/6 Q1B21G026H04 12 DB4 17 75 8 54721 4328J/6 s1821G026H02 12 084 4r 74

). 9 32 821 1328J/6 01521G026H03 18 084 13 75

s. 10 7 321 1328J/6 Q1821G026Wo1 18 084 13 74 7 11 - 60 821 1077 A=323=C/3-91021G153C02 2 084 19 e nBT COMB M /DIRI V 5HU4

} t ,t 12 38 b21 10774=023=C/3 Q1821A153C03 2 DBA 21 2681 y 68 COMB. W/9NHR.

13 ~u21 1077A=022=C/2 Q1821G152w01 2 nba 19 2n81

% to 69 821 a328J/6 G1921CO26CO2 c4 uS4 13 n CUMB V/SNU4 ij 15 17 e21 1328J/6 Q1521G026C01 24 / OSA 13 74 COMB. N/4NHa

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3 lJ 18 39 633 G002=768E317 Gl#33G006H353A 16 *=4 A N4 RECTReanE FURN.

• g Q 19 26 833 G002-768E317 20 3 & 833 - 6002 768E317 G1833G006H354A 91#33G006M3515 16 ==4

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L 3 B33 G002=768E317 Q1833G006H353R 16 ==4 8 N4 RECTRC=4E FilRN. [

t,J 23 833 -G002=768E 317 918333006H3548 16 **4 R NA R EC TRC=RE Ft'W". i 3p 24 50 033 G002-768E317 Q1833G006H3014 24 25 2 633 G002-768E317

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g l 01033G006H302A 24 A NA RECTRC=cE FHWN, [

t 26 53 n33 M 002=768E317 ste33G006H303A 24 ==4 A NA RECTRC=CE FURM.

3(g 27 20 833 G002*768E317 uta33G006H304A 24 ==4 A N4 RECTRC=RE Fi!RN.

• g 28 16 833 G002-768E317 Q1533G006H3054 24 ==4 A NA RECTRC=RE FHRN.

y-29 5 -h33 -G002 768E317 S1533c006H3064 24 ==4 A ~ ~-

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30 47 833 G002-768E317 Q1b33G006H3554 24 ==4 A 3 i,j Q

ti 31 32 13 24 -t:33 - 6002=769E31s 833 G002=768E317 Q1D33G006H3564 J18330006M3018 24 24

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rT - ~35 56- 0 3 3 -6002-7 68 E 317 918338006H3049 24 ==A 8 M4 RECTRC=cE Ft'RM. ,

36 48 b33 E002-768E317 Q1833G006H305R 24 ==A B N4 RFCTRC=RE FHRN. a g 3 ]) ;,, 37 36 66 833 G002 768E317 W1533G006H306M 24 ==4 8 p. A RECTRC=CE FHHN.

65 - 333 - S002=768E317 s1833000eH355n - 24 ==4 8 na NEC7RC=mE Fttaw. o 39 23 G002 768E317 3 833 Q1833G006H356B 24 ==4 5 N4 RECTRC=GE FijpN. =

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) ' ATTACHMENT #2 PAGE 2 of 4 'j C ALCutCTierNG. nCus1111=84013 RECO [ '

3

, CALCULATION SY 8HTAM uuMAR=========vgeIFIED BY ================== ' ,

b- GR AMD-CULF fJUCLE AR 3T ATION= UNIT 1 y ,

PuPULATION OF PIPE SUPP0 HTS FOR ISI

, IASLE a4 SF#INC 30PPORT3-tP!PE*CUA33 %

, Smu, RAhDOM SYS. HL DMG.NO.

- - 1NDICt3- PIPE SUPPORT NO PIPE SIZE PIPE CLASS LINE NU. STRE95 PROR RFNARKS INCH

', CO 36 1533 10784*028C/l 01533G128C01 2 nsA 40 v34 O! 8 533 t078 A*005C/e: slu33G105 tun c0Ha! W/SNH8AtR C2 z uCA za 134 y, 18 833 10784*088C/4 Q1833G108C01 2 DCA 24 139 COMB N /9NUBAER g C3 28 633 1078A*029=C/1 01u33G129C01 CoMs. W/MNHB9ER 2 CBA 41 139 Cnns W/spRINGeRTGTD g- C4 14 833 13424 01633G024H01 4 DCA 1 13R

) l,, C5 31 C41 1082 013C C6 G1C41G113H01 1.5 DCA 3 2'l48 L 59 C41 1082-019C Q1C41G119H02 1.5 nCA 3 2647 E. C7 T E12 a3487/s w1E12G016H01 C8 49 12 DBA 38 67 E12 1348F/15

)('. C, C9 50 -

37 E12 41 -- E12 1348F/15 Q1E128015H12 Q1E12G015H04 14 14 DBA DBA 28 29 102 101 1348 A/17 91E12G012H1T 20 DBA 54

)L 51 to E12 1348E/20 123 Q1E12G014H01 6 084 32 165 L 52 62 E21 13508/7 Q1E21G002H04 r 53 14 08A 1 56 61 E21 a3505/i sit 218002HO! as DBA

) (, 54 27 E22 13498/7 G1E22G003H04 4 084 1 55 55 5 60

,, 42 E22 13498/7 Q1E22G003H03 4/ OsA ;g; 55 5 61

,, 63 - E51 1347A/10 01E51G004H07 to DBA 24 ,,

229

) ,, 57 53 58 46 E51 1346A/12 Q1E51G001H09 6 DBA 30 14 J

. E51 1346A/12 Q1E51G001H08 6 DBA 30 78 $

t,, SG 51 - E5g 1346A/12 stE51G001M07 6 OSA 20 7R

) 1,, CO 44 E51 13444/12 Q1E51G001H05

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6 DBA 30 y 61 43 G33 1079=005C/1 Q1G33G105H01 2 OBA 12 7A "

g t t- C2 833 1342 A #16 139 ,'

W1633G002H12 noA 3[  !,,

63 CO 29 15 433 G33 1342A/16 1342A/16 Q1G33G002H15 01G33G002H09 4

4 4

DBA nuA 9

9 13a 139

,q N* g 10 134 t5 12 - 633 13424/16 W1G330002H17 4 084 to ,,l g[ 03 07 11 22 G33 1342A/16 Q1G33G002CO3 4 DbA 11 i34 134 COMB; W/sNilB

,',j t,,, G33 13428/5 Q1G33G011H01 6 OsA 49 ,

p C8 40- G33 -1342 A/16 G16334002H14 6 dea 9 134 l; g gL 69 67 134 G33 13424/16 Q1633G002H13 6 OBA 9 138 h  ;; g D0  :

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ATTACHMENT #2

) m PAGE 4 of 4 O f.

C A LCub 4 T10n-*ic. 7tC=u1111 = 84013 REvro

• y , CALCutAT10ft bY SMTAM KUMAR========= VERIFIED BY ==================

tIST CP-3CPPORT3-70 BE~EXAMINCD

', J AOLt as SPRING 3UPPURTS~tPIPE=C1;A33 1) b UMpuM SNU. HL DhG.NO. -- PIPE SUPPORT NO PIPE SIZE PIPE CLASS LINE NO. STREAS PRU9 REMARWS

{j ' 1N01CES -- SYS. -- --~~ INCH

~-~~ ~ ~ ~

~ ~ ~ - - " --

2 25 b33 G002=768E317 W1833G006H302A 24 ==A A NA RFC TRf**CF FilRN, t, 5 29 53s G00Z=768E317 v1533G006H306A d4 ==A A #JA RFCTRCIA(T M M.

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6 17 m33 6002=768E317 Q1833G006H352A 16 ==A A NA RECTRC=4E FlfRN.

, 7 to d21 1328J/6 41021G026H01 18 DBA 13 74

31- u33 G002-768E317--41033G006H356 A 24 ==A - --~~ A- NA N EC T R C e 4 CFliR N.- -

) ,, 14 44 m33 1342A Q1u33G024H01 4 DCA 1 13R p 15 64 b33 1342A/16 Q1G33G002H09 4 Db4 to 134 L 16 28 tt33 G002=768E317 41n33G006H3054 g4 ==A A NA RECTRC;.cCFURM.

yL 19 3 221 G002=769E453 Q1521G006H1028 28 ==4 8 NA MAIN ST==AE FilRH.

L 20 27 833 G002=768E317 etu33G00eH304A 24 ==A A NA 21 -16 HECTRC=nE FilRN.

p, 833-G002=768E317 Q1d33G006H351A 1A ==4 A Na RECTRC&CE FilRM.

yL 22 67 G33 13428/5 Gib33G011H01 6 DBA 89 134 26 19 633 6002=768E317 und33G006H354A 16 ==4 A NA 27 34 HECTRC=RE FilRN.

, E22 1349e/7 v1E22G003H04 as 084 S 60 i;

}L 29 63 G33 1342A/16 GIG 33G002H15 Daa 9 L 32 9 821 1328J/6 01821G026H03 4 #

DBA g3n "

g 18 13 75 Q --- 33 34 833- G002 763E317 -uto33G006H302R 24-==A~ P NA REC TRCacE FURH.-

b 5 B21 G002-769E453 utb21G006H102C 28 ==4

}L 35 4 821 G002-769E453 W1521G006H101C 28 ==4 C

8 NA NA MAIN STw CE FilRM. "

g t, 36 40-- 833 MAIN M7 Pace FilRN. ,

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} t, 38 12 H21 1077A=023*C/3 01521n153C03 14 2 noA 29 21 101 2n81 g

,,t COMB. w/mN188.

40 - - 68 G33 - 13424/16-----016 33G002H14 6 --- D B A ' ---- - 9 134 4

a gC 43 61 G33 1079*005C/1 01G33G105H01 2 084 12 g39 "

g C4 60 E51 1346A/12 41L51G001H05 6 Q 47 OdA 30 7A l

f 30-833 -6002-7 eat 317 81533G006H3554 24 ==A A wA RFC7RC=mE FHRN.

y ,i ca 36 u33 G002=768E317 u1533G006H3058 24 ==A 8 g C9 eb E12 1348F/15 41E126015H12 14 DBA 2A NA 102 RECTRCacE FilNN. m g

,1 51 59 251 1346A/12 --- 91L510 001M07 ' 6 DB A~ 30 s4

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g 52 23 b33 6002-768E317 Q1533G006H3548 16 ==4 R NA ..]

53 26 RFCTRCamE FHRH. -

u33 G002-768E317 55 - ~ 521 -- G002=769E453 - Glo21G006H1018 56 u1833n006H303A 24 28

==A

==4 A

R NA na NFCTRC RE FitRM.

NAIN STw=nE FURN.

,' g g ,, 35 a33 G002 768E317 u18333006H304R 24 ==4 8 NA NECTRC=RE FIIRN. "g 57 6 B21 G002-769E453 ute21G006H1010 28 ==A 0 NA 58 57 MAIN STM=CE FURw.

ESI 13464/12 --01t51G001H09 - - ns a -- -- 3 0 74 ---

7 g[ 59 46 Cat 1082-019C 41C41G119*do2 15 DCA 3 2647 >>

g to 11 m21 1077A*023=C/3 utb21G153C02 7 neA 19 2nst COMB! W/ RICIN, spun, a

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CJ 151 1347 A/10 W1L51G004H07 to De A- 24 729

.q O!' C' C8 6'

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'33 821 1382^'!6 1077A=022=C/2 8 '338082"13 6 "84 9 538 -e

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ATTACINENr #3 GRAND GUIF NUCLEAR SrATION

- UNIT 1

• SAMPLE PIAN MR PIPE SUPPORTS CAICUIATION mR ADDITIONAL SAMPLES SIZES i

'Ihe following equation will be used to detemine the size of the additional '

su ple sizes. i N=S 2 2 (a - c) c+1 where, S = Initial saple size c = Allowable nutber of defective supports a = Total nutber of defective supports in the total saple 5

For c = 5 and S = 100, the first re-se ple size will be

, Ny = 11.11 (a , c)

Further additional sa ple sizes will be determined by the following equation ,

2 2 N2 = (b) (S) c+1 where, b = No of defective supports in the previous re-seple >

N2 = 11.11 (b) l' The process will continue until no additional defective supports are found.

I i

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_ .__ _ . _ _ _ _ . . _ _ ._