ML20211B831

From kanterella
Jump to navigation Jump to search
Forwards Request for Relief 8 Re Limited Exams Associated with Unit 1 Third ten-year Interval Inservice Insp Program. Licensee Requests Relief Due to Impractibility of Obtaining 100% Exam Coverage for Affected Items
ML20211B831
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 08/19/1999
From: Sorensen J
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9908250103
Download: ML20211B831 (22)
v • d • e


Text

' '

1 l Northern States Power Company l 1 l Prairie Island Nuclear Generating Plant  ;

l 1717 Wakonade Dr. East Welch, Minnesota 55089 l

August 19,1999 10 CFR Part 50 Section 50.55a U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 I

PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos.50-282 License Nos. DPR-42 50-306 DPR-60 j Request for Relief No. 8 for the Unit 13rd 10-year interval inservice inspection Program On August 5,1994 we submitted for review our third 10-year Inservice Inspection Examination Plan for Unit 1 and, on March 28,1995, a response to a request for additionalinformation to that plan. The NRC issued its evaluation of the 3rd 10-year Interval Program Plan on February 22,1996 The purpose of this letter is to submit a relief request for " limited examinations" associated with that plan. Attached is Unit 1 Relief Request No. 8, Revision 0 which addresses those limited examinations. We are requesting relief pursuant to 10 CFR Part 50, Section 50.55a(g)(5)(iii) due to the impracticality of obtaining "100%"

examination coverage for the affected items.

In this letter we have made no new Nuclear Regulatory Commission commitments.

Please contact Jack Leveille (651-388-1121, Ext. 4142) if you have any questions l

related to this letter. '

- W Joel P. Sorensen l Site General Manager x .)

Prairie Island Nuclear Generating Plant ,

ND g

\

c: (see next page) 7 gg 9908250103 990819 PDR ADOCK 05000282 G PDR i

l

. 4 USNRC NORTHERN GTATES POWER COMPANY l August 19,1999 Page 2 - l l

l c: Regionai Administrator- Region 111, NRC Senior Resident Inspector, NRC NRR Project Manager, NRC J E Silbarg

Attachment:

ISI Relief Request No. 8 (Rev. 0) l l

I U2RP8RO. DOC l

NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN ISI Relief Request No. 8 (Rev. 0)

Limited Examination SYSTEM: Various Class: 1 and 2 Category: Various item: Various impractical Examination Reauirements:

ASME Section XI (1989 no addenda) Code requires full examination of inservice inspection (ISI) components per Table IWB-2500-1, and lWC-2500-1. Reg. Guide 1.147 endorses Code Case N-460,"Altemative Examination Coverage for Class 1 and Class 2 Welds." This code case allows greater than 90% coverage of a weld to meet the " essentially 100%" requirement.

NRC Information Notice 98-42 " Implementation of 10 CFR 50.55a(g) Inservice inspection requirements" Dec.1,1998, states "The NRC has adopted and further refined the definition of "" essentially 100 percent"" to mean greater than 90 percent " in 10 CFR 50.55a(g)(6)(ii)(A)(2) for required examination coverage of reactor pressure vessel welds. This standard has been applied to all examination of welds or other areas required by ASME Section XI.

The Prairie Island construction permit was issued in 1967. This facility was designed and constructed with limited accessibility due to component configurations and/or physical barriers for which 100% coverage is not achievable on some ISI components examined for the Third Ten Year Interval.

Basis for Relief: l The following 10 CFR 50.55a paragraphs apply to the inservice inspection of components in accordance with the ASME Section XI code:

50.55a(g)(1): For a boiling or pressurized water-cooled nuclear power facility whose construction permit was issued prior to January 1,1971, components (including supports) must meet the requirements of paragraphs (g) (4) and (5) of this section to the extent practical.

50.55a(g)(4): Throughout the service life of a boiling or pressurized water-cooled nuclear power facility, components (including supports) which are classified as ASME Code Class 1, Class 2, and Class 3 must meet the requirements, except design and access provisions and pre-service examination requirements, set forth in Section XI of editions of the ASME Boiler and Pressure Vessel Code . . to the extent practical l within the limitations of design, geometry and materials of construction of the components.

50.55a(g)(5)(iv): Where an examination requirement by the code or addenda is determined to be impractical by the licensee and is not included in the revised inservice inspection program as permitted by 4 paragraph (g)(4) of this section, the basis for this determination must be demonstrated to the satisfaction i of the Commission ... j l

Page 1 of 20 L .

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Prairie Island was designed and constructed prior to development of ASME XI ,

therefore design for accessibility and inspection coverage is not in many cases, sufficient to permit satisfying the current Code requirements. Limitations to inspections are primarily due to obstructions and interference.

Summary of the limited examinations are described below and also included in Table 1.

1 Part A: Category B-J, " Pressure Retaining Welds in Piping" For 12" Accumulator Discharge, the UT coverage for Valve to Elbow Weld W-1 is l 75.00%. additional volumetric coverage can not be obtained due to valve I configuration which prevents examination from upstream side of valve.(See Figure 1.)

For PLO-Cap "B", the UT coverage for Nozzle to Pipe Weld W-2 is 78.55%,

additional volumetric coverage can not be obtained due to nozzle configuration contour.

(See Figure 2.)

For Reactor Coolant Loop "A" , the UT coverage for Reducer 40 Elbow to Nozzle Weld W-5 is 48.00%, additional volumetric coverage can not be obtained due to Joint configuration limits access on downstream side of weld.

(See Figure 3.)

For Reactor Coolant Loop "B", The UT coverage for Nozzle to 40 Elbow W-1 is 60.0%, additional volumetric coverage can to be obtained due to nozzle configuration.

(See Figure 4)

For SIS High Head "A", the UT coverage for Elbow to Nozzle Weld W-10 is 84.1%, additional volumetric coverage can not be obtained due to nozzle configuration.

(See Figure 5.)

For SIS High Head "A", the UT coverage for Nozzle to Pipe Weld W-11 is 74.5%,

additional volumetric coverage can not be obtained downstream due to joint configuration. (See Figure 6.) ,

Part B: Category F-A, " Supports" & Category C-C " Integral attachments for Vessels, Piping, Pumps and Valves" Page 2 of 20

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN For Main Steam "A", the surface examination coverage for the Bearing Brake Assembly Restraint H-7 is limited to 84.6%, additional coverage can not be obtained because examination is restricted at six locations due to tack welded cover plate. (See Figure 7.)

For Main Steam B", the surface examination coverage for the seismic restraint H-2 is limited to 70.54%, additional coverage can not be obtained due to restraint configuration. (See Figure 8.)

For Main Steam "B", tho surface examination coverage for the seismic restraint H-1 is limited to 85.11% , additional coverage can not be obtained due to restraint configuration. (See Figure 9.)

For Main Steam "B", the surface examination coverage for the seismic restraint H-3 is limited to 85.11% , additional coverage can not be obtained due to restraint configuration. (See Figure 10.)

For Safety injection Pump 12, The surface examination coverage for support A is limited to 84.00% due to configuration of support.(See Figure 11.)

For Safety injection Pump 12, The surface examination coverage for support B is limited to 84.00% due to configuration of support.(See Figure 12.)

For Safety injection Pump 12, The surface examination coverage for support C is limited to 84.00% due to configuration of support.(See Figure 13.)

For Safety injection Pump 12, The surface examination coverage for support D is limited to 84.00% due to configuration of support.(See Figure 14.)

Additional Means of Establishina Intearity:

In addition, System pressure tests are performed during regular inspection intervals to ensure the piping system is capable of maintaining pressure integrity. System integrity is monitored continuously during normal operation by many direct and indirect methods, e.g., containment radiation monitoring, containment air monitoring, containment sump monitoring, containment temperature monitoring, system walk downs, etc.

Attemate Examination:

The limitations have been noted on the ISI examination reports and are included in the

- ISI Outage Summary Report. NSP will continue to document the limitations.

Page 3 of 20

NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN All in-service inspection at Prairie Island Unit 1 have been done to the greatest extent practical. When limitation to required inspections are encountered M&SP procedure ISI-LTS-1 is applied which requires alternative examination techniques be considered, or applied to gain the maximum obtainable inspection coverage practical. In all of the above items identified this procedure was used and the maximum inspection coverage was achieved.

Limitations are due to design, geometry, and materials of construction of the components or ALARA concems. NSP will continue to utilize the most current techniques available for future examinations.

Page 4 of 20

e o o C m) o d s t t d

e 4 3 sr n f o1 er t

e n u

i si t s it m e u n.

e u

6 d ta le 6

3 .qr a

e .n di o d d n.

i o nu m m )3 o oSa o d

l d w

- i n aer e n o )4 l t t

iog t

at ii ea mi t a mio ek . d 5di t a ).

aF lz ur )2 iorsg u ar) aer6a) mtata7 l

t r ie t it c e ). e1 e r un(

igi e zge t

t ar r u eu5 t 5wu8g ope r imf oi a i r g r u e r nF ug tsf ir e i l t

r sgr ie r f

md n f

nu uw( gi nnu nf u i

l nt liolaf D nai ox s o ciF cem es a mlz vie t nog a

x z e(

igo f

n dd o

c ow ne l

iF f (

n o

ca es n

c o

wog de(

nz az l

ci F do wng nn t

oi cF(

i t

is oeeg adoF n

mn uvi r u n s to nog t

o et ihf ci a coo c( nis n t u

(F eo l

aitsbr t ns osf lz c o ao i im q.he ue O

6 Vh op r

p u N o

n i J

o ec c N z

o s n o

cj s

o Ea aio xt c E aScd x i n

0 a N N lo 0 45 2 6 5 3 5 1 0 M 4 0

0-33 22 00 - -

1 0

'0-4 0

0-4 1

0-4 1

0-4 3

0-4 3

0-M 9 9

99 99 '9 9

9 9

9 9

9 9

9 9

9 9

N e

g 0 5 0 0 4 _

O I t a 0 5

5 0 0

1 4

5 4

6 4

5 8

N 8 0 TN u 7 7 4 6 8 7 8 7 C O E A L g P

S P n I ic ic ic ic ic ic NN r r i

r l t t r r r e e I O e e e t

e t

e t

e t

e c a

c a

u m m m m m m EI T M

f f f u u u u u u r u

r u

C I A e lo lo lo lo lo lo S S VN R I V V V V V V RI M 9 w e '0 "0 0 E 9 o ip 4 o o o lyt t S A g n cn 2 9 b P- r t

le 4- w t le t n ebi X

i N

I E 1 l

E- e ewz co z lezl bo wz o z lee zip ik r mar imar a a et st f

o e

M l

- v z ubo lo N o zP r s s is ee 5 l

a z

o dl N zE eE o E N o BeBs e S R e 1

V N R N AR g it a n P U

d NF W 1 2-W W 5-W 1

0 1

W 1

1 W

H 7- 2-H n

la O d 7 7 A A A A IS 1 4- 2 3 9- 9- 1 8 L

A ie r M

E I

S I

1 5

1 I

S 1

I 1

I S

I I

S I

I S

I S

I 5-I I S

I 6-V ia r R T T E P- @Y d C H N A

N A

A A

A B" T s 5 SD L D D " "

N B" L" n I OA O" A A M M RD I

o M M P O" OB C"P E E A A i

t 5 A CP H H E E ER a i C

U C- R O RO H H T S

T S

W3 n O OO G G O1 im d*

2 C

A L P

OO T L TL C

I H

I H

N I

N I

PT SI N a

x Y "2 1 A

E R

A E

S I

S S

I S

A M

A M

E T U E

d n R AD e TN it 1 1 1 1 1 1

&02 &02 SA m 1 1 1 1 1 3 A- 3 A- 3 h

9 9 9 9 9 9 N SL i L B B B B B B FC FC RI E

HI E 1 TR I e

RA b J- J- J- J- J- J- C- C-OR a B B B B B NP T E B C C

3 o . f f t

qa o f f

.a s o s o s o 8 s e 1

qre n. dSe e r n. it bs it e it e it e

. t oSa o it 5a 1 o i a bs i a bs i a bs i a de15di it 2wu9 ler) t a lm2ldi i

f t

e ra )0 ho b rt pa

)

1 ho b r t pat r 21

) ho b rt

)

3 ho b rt

)

4 g aowu1 t 1 pa t 1 pa t 1 imfolafie e r sl ig e nld r

oe r r nur aetaf ndoe nldoe ndoe nr oepr l l

u oepr oepr l oepr n s t

o et ci F o og n ho ct og it a wpuuig it a wpu ug iwpu t

a uig iwpu t

a uig ihf o nf ci F r u gsF r gsF i

r gsF r t

a coo ( it ioo(

gi n u

gi n u

gi n u gsF igin

(

nisn a .

t t

( ( (

nqs in in ini n m See' f

im q.hu ee f

f f i

n i ni n ni aScd a3cd hu om om om om x n x8n Cax Cax Cax Cax E i E1 i

e e e e 9 8 6 7 8 9 3 3 8 6 6 6 3 3 3 3 3 3 0- 0- 0- 0- 0- 0-9 9 9 9 9 9 9 9 9 9 9 9 N 1 1 0 0 0 0 O

I 1

5 1

5 0 0 0 0 4 4 4 4 T

CN 8 8 8 8 8 8 A

E L P P S

NN e c e e e e e c c c c c I O f a f a a a a a EI T u r r u

f r

u f

r u

f r

u f

r C A u I

S' S S S S S VN RIM 0 E A cn t t A B C D 2 S X i icni t t N imast r mar r o

r o

tr o

t r

o f

o I E is is st p p p p ee ee p u

p u

p u

p 6 SR SR S S S S u

e g

a P

1 3- 1 2- 3- 4-H H H H H H A A D D D D 8 8 3 3 3 3 6- 6- 8- 8- 8- 8-I I I I L S S S S S I

S I

A I I I I I I V

R E "

B B" T *

  • 2 2 2 2 N

I M M 1 1 1 1 A A P P P P RD E E M M M M ER T S

T S U U U U W3 , N N P P P P O1 I A

I A S 1 I S

t S tS PT M M SI N E U T

AD TN &02 &02 &02 &02 &02 &02 SA A 3 A- 3 A 3 A- 3 A- 3 A- 3 N SL FC FC FC FC FC FC _

RI _

EHI E __

TR I RA C- C- C C- C C-OR C C C C C C

NP

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 1 I

Q3P MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION Limitation Data Sheet Initial Exam Report No: 99-0040 Procedure No. IS! UT-16 (Rev.12)

ISO No. ISI-17 (Rev.03) Item No. W 1 Description of Limitation:

Valve configuration prohibits examination from upstream side. obtained maximum coverage using 1-1/2 Vee exam.

Sketch of Limitation:

W-I Tm D ,.., ,

I l l Atve I

.f...

EL9ow

'm '

f/Dw SCA LE I:2 limitation removalrequirements:

None.

Page 7 of 20

NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 2

[@ MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION Limitation Data Sheet Initial Exam Report No: 99-0234 Procedure No. ISI-UT 16 (Rev.12)

I 0235 (60deg Supl) Temp Procedure: 99-UT16-1 ISO No. ISI-47 Item No. W-2 1

Description of Limitation:

~-

No examination from nozzle due to nozzle configuration.1 1/2 Vee Cal and 60deg supi. exam used to maximize coverage.

Sketch of Limitation:

Sud 2.

45, ,50 6ds450  ;

,, \ NOZZ.

4 CAP

--- fIDW

,. . . 7 . . .

., t Scale 1:1 Limitation removalrequirements:

None.

Page 8 of 20 i

NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 3

~

QHP MATERIALS & SPECIAL PROCESSES .

INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION Limitation Data Sheet initial Exam Report No: 99-0152 Procedure No, ISI-UT-11 A (Rev. 3)

ISO No. ISI-12A (Rev.2) Item No. W-5 Description of Limitation:

No scan 2 and limited scans 3 & 4 due to nozzle configuration. Limited scan 1 due to OD counterbore.

Sketch of Umitation:

EL6cv N' t

( ,

' (,uE,n z.

j

\

RE DocGD \ l SCA LE \ I s

I

  • T!?"N s k.ul m+w l

Urnitation removal requirements: 1 None.

Page 9 of 20

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 4 GEiP MATERIALS & SPECIAL PROCESSES ,

INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION 1999 PRAIRIE ISLAND UNIT 1 OUTAGE Limitation Data Sheet

\

\

Initial Exam Report No: 99-0041 Procedure No. ISI-UT-11A (Rev. 3) i ISO No. 1S1-13B ltem No. W-1 j l

Description of Limitation:

No scan 1 due to nozzle configuration.

Sketch of Limitation:

StML

  • i M l

~

/ s

, I

\ #

\ '

\ /

\

sl v

Limitation removalrequirements:

None.

Page 10 of 20

. l

, NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN

)

Figure 5 bEP MATERIALS & SPECIAL PROCESSES INSERVlCE INSPECTION - NONDESTRUCTIVE EXAMIN/. TION j

. 1999 PRAIRIE ISLAND UNIT 10UTAGE Limitation Data Sheet initial Exam Report No: 99-0146 Procedure No. ISI-UT 16 (Rev.12) l J

ISO No. ISI 9 Item No. W 10

)

Deccription of Limitation: l No scan 2 and limited scans 3 & 4 due to nozzle configuration.

Sketch of Limitation:

,2 l

y/-lo I / OZZ.

flow 1-.L '

ELB. , \'t y I Limitation removal requirements:

None.

Page 11 of 20 l

~

NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 6 UEP MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION '

1999 PRAIRIEISLAND UNIT 1 OUTAGE Limitation Data Sheet initial Exam Report No: 99-0145 Procedure No. ISI-UT-16 (Rev.12)

ISO No. ISI 9 Item No. W 11 Description of Limitation:

No scan 2 and limited scans 3 & 4 due to joint configuration.

Sketch of Limitation:

SCAD I , ,

, W-Il ,

l n /

\ ',

4

, i 1 i

, . . a., .. -_ _ _ ,

8*

nozz ', l_ _ _ a ._

scale I:2 Limitation removalrequirements:

3 None.

Page 12 of 20 j

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN 4

Figure 7 l

69P MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION-1999 PRAIRIEISLAND UNIT 1 OUTAGE Limitation Data Sheet Initial Exam Report No: 99-0343 Procedure No. ISI-MT 1 (Rev. 9)

ISO No. ISI-51A Item No. H-7 Description of Limitation:

Limitation #1) No access to 8 sq. inch of exam area (6 places) due to cover plate.

Limitation #2) No exam on 16 sq. inch of exam area due to configuration of cover plate (6 places).

Sketch of Limitation:

1

. fit ou W "~ % sr#

l 1 Leof V covta d A

\,

i W ,

i l Limitation removalrequirements:

No removal is possible. Cover plate is welded to component.

Page 13 of 20

  • NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 8 EP MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION . NONDESTRUCTIVE EXAMINATION-1999 PRAIRIE ISLAND UNIT 1 OUTAGE Limitation Data Sheet Initial Exam Report No: 99-0340 Procedure No. ISl-MT-1 (Rev. 9) 1'D No. ISI-68A Item No. H-2 Description of Limitation.-

Exam limited to 364 sq.in. of 516 sq.in. of total weld area.

Sketch of Limitation:

a n, IZZ, 3 3.. .. ~ _ 2 3 D \D I

      • $ \ a-a >\ \

k L__. j L.A i t

~

Limitation removalrequirements:

None.

1 Page 14 of 20 l I

l

1

. NORTHERN STATES POWER INSERVICE INSPECTION j PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 9

[ nip MATERIALS & SPECIAL PROCESSES <

INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION-1999 PRAIRIE ISLAND UNIT 1 OUTAGE ,

I Limitation Data Sheet '

initial Exam Report No: 99-0339 Procedure No. ISI-MT 1 (Rev. 9)

ISO No. ISI-68A Item No. H 1 Description of Limitation:

Exam limited to 183 sq.in. of 215 sq.in. of total weld area.

Sketch of Limitation:

Hl _

! 1 f 27,2,l J

%)

?\ \

\

J . \

Limhation removal requirements:

None. 1 Page 15 of 20

, NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN l

Figure 10 62ip MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION-1999 PRAIRIEISLAND UNIT 1 OUTAGE Limitation Data Sheet Initial Exam Report No: 99-0338 Procedure No. ISI-MT 1 (Rev. 9)

ISO No. ISI-68A Item No. H 3 Description of Limitation:

Exam limited to 183 sq.in. of 215 sq.in. of total weld area.

Sketch of Limitation:

a3

.f  !

J;m

\b i i

[,

I Limitation removal requirements:

None.

Page 16 of 20

, NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 11 4

USiP MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTIVE EXAMINATION-1999 PRAIRIEISLAND UNIT 1 OUTAGE Limitation Data Sheet .

InitialExam Report No: 99-0366 Procedure No. ISI-MT-1 (Rev.9)

ISO No. ISI 83D ltem No. H 1

~

Description of Limitation:

Configuration prohibits examining weld at base of support.

Sketch of Limitation:

Y; -

7B '

t 1 ;

O ri t ;  ?

jT. e fuMP U k Nl- 1 W i L

.y 6L t ,,

i rn i

( s sno .-

l wAGESj/Bl4 lW

  • AREA AkT QN.!E ,

Limitation removal requirements: ,

None.

Page 17 of 20

, NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 12

[iSiP MATERIALS & SPECIAL PROCESSES INSERVICE INSPECTION - NONDESTRUCTlVE EXAMINATION" 1999 PRAIRIEISLAND UNIT 1 OUTAGE Limitation Data Sheet .

InitialExam Report No: 99-0367 Procedure No. ISI-MT-1 (Rev. 9)

ISO No. ISI-83D ltem No. H-2 Description of Limitation:

Configuration prohibits examining weld at base of support.

Sketch of Limitation:

YC

? -

O ri t !  !!

.@:. . PUMP U I M iI ;I-- M b i

t il e 1 4----....- i

/ s-suo .-

. lw4aES$U)l4 lW AREA n r 10 sc4 %

Limitation removal requiremenfs:

None.

Page 18 of 20

a

=

p .

, NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 13 SEP MATERIALS & SPECIAL PROCESSES INSERVICEINSPECTION NONDESTRUCTIVE EXAMINAT10N' 1999 PRAIRIE ISLAND UNIT 1 OUTAGE Limitation Data Sheet Initial Exam Report No: 99 0368 Procedure No. ISI-MT-1 (Rev. 9)

ISO No. ISI-83D ltem No. H-3 Description of Limitation:

Configuration prohibits examining weld at base of support.

Sketch of Limitation:

v .

iB

> a O n  ? : t j

.LT. .> Pump E L L:!= L-l. W:  ;

A (I F t

\

tc-......:  :: ...---.;

SRD VIEJ wauls)IBl4 YW #

MfA

/Joi 1*0_ SCAD i

Limitation removalrequiremenfs:

)

None.

Page 19 of 20

I 4

' NORTHERN STATES POWER INSERVICE INSPECTION PRAIRIE ISLAND UNIT 1,3RD INTERVAL EXAMINATION PLAN Figure 14 SEP MATERIALS & SPECIAL PROCESSES INSERVICEINSPECTION NONDESTRUCTIVE EXAMINATION-1999 PRAIRIE ISLAND UNIT 1 OUTAGE i

Limitation Data Sheet initial Exam Report No: 99-0369 Procedure No. ISl-MT 1 (Rev.9)

ISO No. ISI-83D ltem No. H-4 Description of Limitation:

Configuration prohibits examining weld at base of support.

Sketch of Limitation:

?

@i .

o , s .

O n  ? :  ?  :

!T.1. Pump E L Mi- l- W  ;

B II & k is....... i gap f ,

V/Ed

. IDAulS$lBig fW l gr to scMt Limitation removalrequirements:

None.

Page 20 of 20

Retrieved from "https://kanterella.com/w/index.php?title=ML20211B831&oldid=3304234"