Text

Forwards Final Draft Progress Rept on Rock Monitoring Instrumentation.W/One Oversize Figure.Aperture Card Is Available in PDR
	ML18037A006
Person / Time
Site:	Nine Mile Point
Issue date:	05/30/1984
From:	Mangan C; NIAGARA MOHAWK POWER CORP.
To:	Schwencer A; Office of Nuclear Reactor Regulation
References
	(NMP21-0069), (NMP21-69), NUDOCS 8406040164
	Download: ML18037A006 (178)
	v • d • e

1 REGULATO INFORMATION DISTRIBUTION TEM (RIDS)

AGcBssioN(NBR;8906000160 Doc ~ DATE: 84/05/30 N0TARIzED:

No oocKET FACIL:50-410 Nine Mile Point Nuclear "Station< Unit 2r Niagara Moha 05000410 "AUTH BYNAME AUTHOR AFFILIATION MANGANgCeiVe Niagara Mohawk Power

Corp, REC IP, NAME RECIPIENT AFF IL'IATION SCHWENCERgA ~

Licensing Branch 2

SUBJECT!

Forwards final draft progress rept on rock monitoring instrumentation.W/one oversize figure. Aperture card is available in PDR, DISTRIBUTION CODE:

B001S COPIES RECEIVED:LTR.L ENCL SIZE'(

TITLE: Licensing Submittal:

PSAR/FSAR Amdts 8 Related Correspondence NOTES!PNL icy FSAR'S 8

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Q 9gQOQ+5fg NIAGARAMOHAWKPOWER CORPORATION/300 ERIE BOULEVARDWEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 May 30, 1984 (NMP2L 0069)

Mr. A. Schwencer, Chief Licensing Branch No.

2 U.

S.

Nuclear Regulatory Commission Washington, D.C.

20555

Dear Mr. Schwencer:

Re:

Nine Mile Point Unit 2 Docket No. 50-410-

~

Enclosed for your review are six (6) copies of the final draft of our progress report on the rock monitoring instrumentation at Nine Mile Point Unit 2.

Very truly yours, Enclosure C.

V. Mangan Vice President Nuclear Engineering 5 Licensing r

8406040164 840530 PDR ADOCK,'05000410

' ~;

PDR r

8~'I

g. ((

pgAg(5

cf, Sect ion 2i 5i 4i 13 of the FSAR presents a description of ?

and data fr om?

the various. types of instrumentation that have been in-stal led in proximity to the excavations for Unit 2i The informa-tion presented in the FSAR?

in turn>

was an update of that pro-v ided in Response Q361 i 5

( NRC Request for Addi t iona 1

Infor ma t ion )

submitted in Februar y 1980'ener al l y, the FSAR pr ovides data and analyses through 1981 i It is the purpose of this repor t to pr ovide infor mation r egarding the status of the instr umentat ion and repor t on the r esul ts ob-tained through Nar ch 1984.

Detai ls of the pur pose for the instru-mentation and methods of instal )ation have been provided previ-ous) y and wi1 l not be repeated her ei Table 1 updates Table 2.5-33 of the FSAR and provides a summary of the instr umentation at Nine Nile Point as we) l as a

) isting of the locations and current status'igur es 1

and 2 i l lustrate the locations of the instru-mentation r elative to the site excavations?

and Fig.

3 depicts the relationship of the inclinometers and extensometers relative to the stratigraphic co) umni Instrumentat ion that is current 1 y being moni tored includes inc) inometers>

extensometers, piezometer s>

and l inear -displacement sensors (gap gauges) i Peadings of a l l other instrumentation r epor ted in the FSAR have been discontinued, In genera)>

the results of all the instrumentation>

taken collec-tively> indicate that the design cr iteria established for rock movement ar e suf ficient and wi I l not be exceeded dur ing the pr o-qected 1 ife of the faci1 ityi The instrumentation is predominant) y af fected by seasonal temper ature changes but some very sma

) )

long-term displacements can be r ecognizedi 4

During the per iod of monitor ing detailed in this repor t>

the most notab) e af feet on instrumentation r eadings (beyond temperature-induced f luctuations) was the rewater ing of the intake shaft and reactor excavation starting in December 1982'he water level in the shaft was allowed to r ise fr om (appr oximately) elevation 125 feet before December 1982 to between elevation 200 and 220 feet after Januar y 1983'he water level in the shaft has been main-tained above elevation 200 feet throughout the period of moni-tor ing descr ibed in this r epor t i The water level in the reactor excavation was allowed to rise from below the bottom of the excavation (elevation 163 feet) to zust below the elevation of the electr ical tunnel benches (elevation 206 feet)i This level was maintained until June 1983 when the pumps were again turned on and the reactor excavation dewateredi This dewatered status of the reactor excavation has been main-tained from mid-June through the end of this monitoring periods I NCLINONETERS Depth-displ acement pr of i les of inc) inometer s that for al 1 of the monitoring period ar e provided for in Nar ch 1984 (Figs, 4-23) i Inc) inometer I-3 has since December 1983; therefor e>

the November 1983 wer e moni tored readings taken been blocked reading is the gg06040164

0 most recent one availablei Incl inometers BI 3>

SI 4t SI 5t 803t and RS-2 wer e abandoned dur ing the moni tor ing period and the r ecords pr esented are the last taken'adwaste Inclinometers (800 Series)

Five inc 1 inometers (805>

806>

810>

820>

and 82i) ar e curr ent 1 y being read to monitor any minor rock adjustments that might be associated wi th the Radwaste thr ust structur ei Almost four years of monitoring of these incl inometers have revealed two distinct types of movement--one is a

sma1 1 but steady long-term displace-ment and the other a more abrupt displacement directly associated with the r cwater ing of the shaft and r eactor excavationsi The long-term displacements ar e evident at about elevation 215 feet in inclinometers 805~

SiO~

and 82i (Figs'4-26)i This movement is ver y sma1 1

(Oi 1-Oi2 mm/yr) and is directed toward the nor thi This zone of movement is above the r ock uni ts that wer e rewateredi Inter estingly>

the other radwaste inclinometers do not show these displacementsi Neither the direction of the movement nor the magnitude will affect the structures at the sitei All other displacements of note in the r adwaste inclinometers seem to be associated with the rewatering of the shaft and reactor excavation at the beg inning of i983i The time-displacement plots of inclinometers 806> 820'nd 82i at elevation 90 feet (Figsi 27-29) i 1 lustrate this reactions In each of these instruments>

displ acements start near the beginning of i983>

take approximatel y four months to reach maximum displacement of about Oi5 mm~

and then remain at that levels All displacements are toward the west't is postulated that these displacements'ay be a buoyancy effect that>

because of the direction of the maximum principal stress and a pronounced fabr ic deve loped by the Radwaste str uctur er resul ts in smal 1

~ irreversible displacements towar d the west'his same phenomenon is recor ded at elevation 175 feet in inc 1 inometer 820 (Fight

30) i The total displacement of this level is Oi8 mm> but movement at this depth is not recorded in any of the other in-clinometersi The most pr onounced zone of displacement in the r adwaste incl in-ometers is recorded in inclinometer 806 at elevation 240-248 feet (Fight 3i)i This zone has shown a steady displacement toward the northeast of appr oximately Oi7 mm/yr for the last two-and-one-half year si It is ver y near the top of the bedr ock and is not r ecor ded in incl inometer 805>

which is onl y about i00 feet to the wes'ti Because the dir ection of displacement in this "one is toward the northeast (away fr om all site structures) and similar movement does not occur in other incl inometers>

there does not appear to be any adver se consequences to the pr esent design cri ter iai

"3-Intake Shaft Inclinometers Like the r adwaste inclinometer s>

the inclinometers around the intake shaft exhibit two distinct types of movement--one is a

long-ter m pr ogressive movement associated with excavation and the other is a resul t of rewateringi The long-ter m pr ogressive move-ment in the displacement plots of SI-8 and SI-9 (Figs'2 and 33) are super imposed on the r cwater ing displ acementi Inc 1 inometers SI-8 and BI-9 ar e located on the east bench of the screenwe 1

1 shaft and the displacement zones cor r espond with the elevation of the shaf t bottom and the east tunnel i The long-ter m displ acements ar e est imated to be between i 2 and i 4 mm/yri The displacements associated with the rewatering of the shaft gener a 1

1 y show movement towar d the sha f't and/or the tunne 1 s.

Inc I inometers west of the shaf t (I-3>

I-2~ SI-6) r ecord displ ace-ments toward the east and northeast while incl inometers on the east bench

<SI-8~ SI-9) move toward the south and southwest'nl incl inometer SI-iO is anomalous in that it shows a one-time dis-pl'acement associated with rewatering that has a nor theast trendi All the r cwater ing displacements range from Oi4 to ii0 mm and then level off'eactor Excavation Incl inometer s None of the r eactor excavat ion inc 1 inometer s (SI-20~ SI-2i SI-22'nd SI -23) have shown any discernable movement except SI -23>

whi ch has shown smal 1 step-1 ine displacements toward the west (away from the excavation) between elevations 76 and iiO feet

<Fight

34) i The overal 1

r ate of movement in this zone is 1 ess than Oi3 mm/yr i EXTENBONETERB Reactor Excavation Extensometers Extensometer EX-20 (Fight

35) is the only extensometer located in close proximity to the r eactor excavations The upper part of the extensometer i

1 lustrates typical temper atur e-related movements and two "ones below elevation 127 feet (127-92 feet and 92-54 feet) have expandedi From the timing of the initiation of the expan-sion>

i t appear s that it may be re 1 ated to the r cwater ing of the reactor excavat ioni However>

both zones were be low the water table before the rewater ing>

and the expansion has continued even af ter the water was drawn down again in June i983i Total expan-sion in these two -ones since i5 December i98i has been Oi Oii inches (elevation 127 to 92 feet) and Oi 026 inches (elevation 92 feet to 54 Feet) i

Intake Shaft Extensometers Extensometers in the area of the intake shaft have been sub<ected to var iations in temper ature because of the pr oximity to the open shaf t as wel 1

as the nor mal exposure fr om the ground sur facei Consequent 1 y~

the extensometer records (Figsi 36-4i )

ar e dominated by temperatur e-related r esponsesi Extensometers EX-I thr ough EX-4 are constructed with steel rods that have a higher coefficient of expansion than the rocki As a r esul t, their reactions to tempera-tur e changes ar e seeming 1 y out-of-phase (Fig i 42) i On the other hand>

EX-5 and EX-6 use invar r ods that pr oduce an in-phase r e-sponse to temper atur e changes (Fig

~ 43) i The plots of total movement of each of the extensometers near the shaft indicate a

steady shrinkage of the upper most "one of r ock (Oswego Sandstone and Transi t ion Zone ) of be twe'en 0 i 0 I -0 i 02 inches/year i This shr inkage may be attr ibuted to the drying out of this r ock unit that~ prior to site activities>

was below the water tablei How-ever>

there are a number of events that have occured in i982 and 1983 that affect the interpretation of the movementsi Construc-tion of buildings around and above the shaft and instruments has changed the degr ee of exposur e to outside air temperature changes>

thus r educing the var iations in seasonal readingsi Also>

these buildings may cause some small. settlement simp)y, because of in-cr eased loadi The raising of the water table in December i982-January i983 caused a change in the effective stress in the rock>

sub<ected more rock units to swe 1

1 ing>

and also tr ansfer r ed the heat of reaction of the curing concrete in the shaft to the rock massi It is very difficul t to isolate the r ock mass r eaction to each of these eventsi However>

the net sum of the events on individual extensometers can be obser vedi Some extensometer s

(EX-1>

EX-2) demonstrate a continuation of the shr inkage of the upper r ock units; however

> it appears that the rate of shr inkage has decreasedi In other extensometers (EX-5>

EX-6) the overal 1

r ate of shrinkage appears unchangedi (In EX-3 and EX-4> it is sti1 1

diff icul t to determine if ther e is a continued shr inkagei

)

In al 1

the inc 1 inometers~

the seasona I f luctuations ar e less pronouncedi In summary~

whi le there ar e many factor~ that may affect interpr e-tation of the r eadings> it is clear that the overal 1 rock mass r eaction is that of minor shr inkage (maximum Oi 02 inches/

year) i Inclined Extensometers Beyond temperatur e effects in the uppermost "ones of HEX-2> there does not appear to be any consistent net expansion or contraction greater than OiOi inches in either of the inclined extensometers'Figs.

44-45)i

GAP GAUGES The progr am for monitoring the str uctura1 gaps between Categor y I structures began in the fal 1 of i98ii A total of 14 gauge loca-tions are being monitor ed>

many with mul tiple instrumentsi The resul ts of the monitoring are presented as Figsi 46-59>

In most of the locations~

the displacement normal to the reactor contain-ment is measured but~

in several instances (G-2A~

G-3S>

G-4S)>

a shear component is also monitored, In general al 1

the gap gauges provide similar resul ts:

a cycl ic var iation of the gap width in phase with seasonal temper atur e var iationsi Notably>

gap gauges G-SA and G-5B provide almost identical r esul ts despi te the fact Chat they are located at opposite ends of the reactor excavations This>

coupled with the fact that the readings ar e pr opor tional ly identical to the 15-day temperature average>

indicates there is no net closure (or opening) in the north-south dir ection (Fight

60) i Movement in the east-west dir ection can best be deduced from examination of the G-i series of gaugesi Gauge G-iB has been moni tored for Che longest period (since November 1981) and~

upon first examination>

the r eadings tend to suggest a net closure of the gap over timei However p at this point~ it is difficul t to deter mine i f this c 1 osur e is actua)1 y a pr ogr essive rock displace-ment or simply a dampening of the seasonal temperatur e variations as a resul t of the enclosure and heating of Che area near the gaugesi At pr esent> it appears that the readings may be fluctu-ating ar ound a

new base value that is somewhat lower than the orig ina 1 zero point estab 1 ished when the ar ea was sub<ected to Che nor mal air temper ature var iationsi Given the new base 1 ine>

the r eadings do not appear to suggest a net closur e of the gapi Figur e 6i is a composi te recor d of a

1 1

the G-i gauges with che A>

Cp and D gauges ad<usted to coincide with the G-iB readings In this figure>

the similar ity of Che var iations with time can be observed--fur ther indicating the af feet of temper atur e r ather than r ock movements which might be expected to di ffer depending on che location and or ientation of the gaugers Figur es 62-64 present shear versus normal displacements with time of the three locations wher e both shear and normal displacements are monitored (G-2>

G-3>

G-4)>

These figures are meant to depict the trace of a point on the r eactor containment with time (facing Che r eactor containment from the outside)i In the case of G-2A versus G-1A~

iC is clear Chat most of Che movement has been normal to the r eactor containment

( i

> e>>

the gap has been opening and closing with seasonal temperature var iations) i Measurements at G-3 indicate both normal and shear movement with almost no net displacement with timei Instal 1 ations of G-4 depict gap closure and shear displacement to Che r ight and show some small net move-menti When the orientation and position of this gauge is con-

sider ed~ it can be determined that the net movement is almost directly west't should be noted>

however~

that the G-4 gauges wer e insta 1 l ed in Feburar y 1983, and it may be too ear 1 y to deter-mine if there real l y is a net movementi In Januar y

1983>

one gap gauge was mounted verticall y on the reactor containment building wi th the r efer ence plate set on the SE electr ical tunnel tie-ini The purpose of this instal l ation was to monitor the effect of the r cwater ing of the r eactor excavations In a sense~

with the gauge mounted on the reactor, the instrument is monitoring the relative position of the base of the excavation (elevation 163 feet) with respect to the electrical tunnel (elevation 214i5 feet) i Whi le it initial l y appear ed that the gauge was recording a

swe I

I ing of the r ock mass between el evations 163 and 214i5 feet> it now appears that>

in fact>

the seasonal temperature changes are..the most dominant effect being recorded.

The first year r ecord shows a net gap closur e (zone expansion) but~

at this time~ it is difficult to determine if this is zust a

temperatur e variation or iF the tr end will continuei PIEZONETERS Table 2 presents an update of the results of the monitor ing of the piezometer s from Januar y 1983 thr ough Nar ch 1984<

This data documents the r ise in water l eve l s at the beg inning of 1983 in the shaft and reactor excavat ion and the subsequent lower ing of the water level in the r eactor excavation near the end of June of the same year i

Table 1

INSTRUHENTATZON Instrument Stresseeters oc-1 oc-2 oc-7 Inclinometers I-2 I-3 I-4 SZ-1 Location (Plant Grid Coord~toates 5610 91S 1896 30W 2599.45S 1877 52E

'57.00N 281 50W 351 92N 295.00w 523 01S 382.77W 226 ~ 17N 392 92W 318. 42N 439 ~ 75W 603.76S 535.77W 332 42N 254.79W Elevation

~ft 198 -

196 159 - 157 141 141

Top, 260

Bottom, 196

Top, 253

Bottom, 200

'Zop, 250

Bottom, 103

Top, 263

Bottom, 183

Top, 220

Bottom, 74 Date of First Read~in Sept.

1977 Sept.

1977 July 1977 July 1977 Har.

1977 Har.

1977 Mar 1977 Dec.

1979 Reading Frequence Monthly Monthly Honthly Monthly Honthly Monthly Monthly Honthly Honthly Status Discontinued July 1982 Discontinued

~ July 1982 Destroyed Dec.

1979 Failed Sept.

1980 Discorrtinued May 1982 Discontinued June 1981 Onqoinq Discontinued May 1982 Destroyed belo~ el 146 in Feb.

1980 SI-2 SI-3 SZ-4 338. 67N 366.83W 334 17N 310 ~ 83W 334 OON 300.00W

Top, 246

Bottom, 93

Top, 232

Bottom, 78 Topg 232

Bottom, 72 Jan.

1980 Jan 1980 Jan.

1980 1 of 5 Honthly Monthly Discontinued March 1983 Discontinued March 1983 Monthly Ongoing

Table 1 (continued)

Instrument Location (Plant Grid Coordin~ates Elevation

~ft Date of First Read~in

Readina, Frejuencnn Status SZ-5 SZ-6 SZ-7 360. 17N 300.00W 395 00N 329.92W 342-5H 265.5w

Top, 232

Bottom, 71

'Iop, 24 6

Bottom, 70 Jan.

1980 Jan.

1980

Top, 220

'an.

1980

Bottom, 71 Yonthly Monthly Discontinued Harch 1983 Ongoing Honthly Blocked at el 158 in Jan 1980 SZ-8 SZ-9 SZ-10 SI-20 SZ-21 SZ-22 SZ-23 803 805 806 810 355.79H 261 82W 355 34H 252.0w 379.8H 252.0w 7.26H 113. 85E 62.0N 138.0E 15 59H 230. OE 59.93S 80.23w 191. 1H

6. BE

55. 7N 318. 7E

73. 1H 468.4E

87. 3S 707. 7E Top, "216

Bottom, 72

. Top, 216

Bottom, 74

Top, 242

Bottom, 76

'Iop, 248

Bottom, 53

Top, 246

Bottom, 56

Top, 250

Bottom, 60

Top, 203

Bottom, 51

Top, 243

Bottom, 117 Topi 24 6

Bottom, 88

Top, 249 Bottom, -37

Top, 247 Bottom, -37 Nov 1981 Nov.

1981 Nov.

1981 Hov 1981 Hov 1981 Nov.

1981 Hay 1980 May 1980 June 1980 Hay 1980 Monthly Ongoing Monthly Ongoing Yonthly Ongoing Honthly Ongoina Monthly Onaoina Honthly Monthly Monthly Ongoing Discontinued June 1983 Onqoir.g Monthly Onqoinq Monthly Onqoina Monthly Ongoinq 2 of 5

Table 1 (continued)

Instrument 820 Location (Plant Grid Co 0 1 dinane s

298N 50E Elevation

~ft

'Iop, 238

Bottom, 52 Date of First Reading Hov.

1981 Reading Freauencv Monthly Status Onaoina 821 263N 106E

'Iop, 240 Bottom 52 Nov.

1981 Monthly Ongoing RS-2 Extensometers 1057. 3S

. 493.7E

Top, 250 June 1980

Bottom, 172 Honthly DiSCOntinued April 1983 HPX-1 HPX-2 EX-1 344 90H 353.54W 166 53N 55 63E 335 OBN 367. 86M

221, 216, 211 201 ~

171 ~

141

245, 235 ~ 225 205 ~

165, 125

247, 227, 213

196, 172 ~

130 97 June 1977 Aug.

1981 Sept.

1977 June 1981 Hov 1979 Honthly Honthly Honthly Discontinued Aua.

1981 Discontinued June 1981 Ongoina EX-2 339.08N 310.58M

232, 213, 196 172 ~

130 r 1 10 72 Dec.

1979 Honthly Discontinued February 1984 EX-3 Ex-4 EX-5 330.42H 229 92W 360.92H 304.08M 346-96N 261. 64W 232 ~ 213, 196

172, 113, 72 232r 213 ~

196 172, 113

220, 213, 196 172 ~

132r 110 72 Dec.

1979 Dec.

1979 Oct.

1981 Honthly Honthly Honthly Discontinued February 1984 Discontinued f1arch 1984 Ongoing EX-6 Ex-20 348. ON 252. 78W

2. 16H 113 94E j

220, 218, 196

172, 132, 110 72

252, 237, 222

202, 177, 156

127, 92, 54 Oct 1981 Oct.

1981 Honthly Ongoing Honthly Ongoina or:

5

Table 1 (continued)

Instrument Location (Plant Grid Coordin~ates Eleva tion

~~ft Date of First Feadina Reading Status HEX-1 54 ~ 2N 88.4E (Horizontal depths) 10 ~ 20, 40 60,

112, 150 Oct.

1981 Monthly Ongoing

'EX-2 Pi ezome ters 240.0N 54.5E 246.0(Gnd Elev) Dec.

1982 I

44,55,70,86 96,129(anchor distances from head) t1onthly Ongoing PI-1 PI-2 PI-3 PI-4 PI-5 PI-20 332.50N 265.50ff 335.25H 372.53ff 332 33N 304.92ff 415. 83N 355.00ff 355.0N 225.0ff 5.53H 117.63E 131 B -

181 A -

160 B -

190 130 B -

181 A-161 B 194 A 123 B - 202 157 Nov.

1979 Monthly Ongoinna Nov 1979 Hov 1979 Monthly Discontinued Harch 1983 Monthly Ongoing Nov.

1981 Monthly

. Ongoing Nov 1981 Monthly Ongoina Nov.

1979 Monthly Ongoino PI-21 4

37N 229.87E 156 Nov.

1981 Monthly Ongoing 4of5

Table 1

inued)

Instrument G1-'A Gl-B G1-C G1-D G2-A G2-B G3 G4 G5-A G5-B G6 GV1 Location (Plant Grid Coordinates 47.5N 73.0E 63.5S 64.5E 56.0S 69.0W 32.0N 82.0W 63.0N 60.0E 72S 49E 115.0S 62.0W 69.0N 54.0W 131N 6E 125S 9W 128S 62W 65.0S 63.0E Elevati on

~n 214. 5 214. 5 214.5 210. 0 214.5 214.5 262.0 207.5 217.75 217.75 214. 5 214.5 214.5 Table 1 (continued)

Date of

~Fi R

di May 1982 Nov.

1981 Dec.

1982 Dec.

1982 Hay 1982 Nov.

1981 Dec.

1982 Feb.

1983 Nov.

1981 Nov.

1981 Jan.

1983 Reading

~Fre uenc Monthly Monthly Monthly Monthly Honthly Monthly Monthly Monthly Monthly Monthly Monthly Monthly Status Ongoing Ongoing Ongo'ing Ongoing Ongoing Ongoing Ongoing Ongoing Ongoing Ongoing Ongoing Ongoing 5of 5

TABLE PIEZOMETER DATA Page 1 of 6

-0 DATE INSTRUMENT 81/86/83 PI-1 81/24/83 PI-1 8 2/8 8/83 P I-1 82/21/83 PI-1 83/8 9/83 PI-1 84/86/83 PI-1 84/29/83 PI-1 86/15/83 PI-1 87/12/83 PI-1 88/15/83 PI-1 89/13/83 PI-1 18/21/83 PI-1 11/1 8/83 PI-1 1 2/27/83 PI-1 81/24/84 PI-1 8 2/1 5/84 PI-1 83/21/84 PI-1 SENSOR A

B A.

B A

B WATER LEVEL (ft. )

177.14 287.36 287.87 288.28 289.61 211.85 211.22 283.67 287.99 216.59 215.84 286.21 218.99 288.98 289.61 285.29 286.84 285.75 218. 99 218.82 218.99 286.44 289.84 289.98 212. 84 216. 82 217. 91 218. 59 218.37 283.21 217. 22 281. 82 215. 61 SENSOR ELEVATION (ft.)

A = 131.8 B = 181.8 Note:

Water level is below sensor level

TABLE Page 2 of 6

DATE INSTRUMENT 81/86/83 PI-2 81/24/83 PI-2 82/88/83 PI-2 8 2/21/83 PI-2 83/8 9/83 PI-2 83/24/83 PI-2 84/86/83 PI-2 84/29/83 PI-2 87/1 2/83 PI-2 88/15/83 PI-2 89/13/83 PI-2 18/21/83 PI-2 11/22/83 PI-2 12/27/83 PI-2 81/24/84 PI-2 8 2/1 5/84 PI-2 SENSOR A

B A

'B A

B A

B WATER LEVEL (ft.)

175.92 285.42 284.99 216.72 287.29 218.11 288.22 219.49 288.91 223.41 288.91 219.95 215. 83 221.88 288.45 219.83 282.91 216. 26 283. 83 219. 83 285.22 217.65 284.29 216.72 286.37 228.88 211. 22 222.26 289.83 228.88 285.45 223.64 SENSOR ELEVATION (ft.)

A = 168.8 B = 189.5 Note:

Water level is below sensor level

TABLE Page 3 of 6

V DATE INSTRUMENT 81/86/83 PI-3 81/24/83 PI-3 82/88/83 PI-3 8 2/21/83 PI-3 83/89/83 PI-3 83/24/83 PI-3 SENSOR A

B A

B WATER LEVEL (ft.)

174.99 285.44 287.76 288.98 218.76 218. 51 212.38 288.44 211.22 284.29 287.76 SENSOR ELEVATION (ft.)

A = 138.8 B = 181.8 81/86/83 PI-4 81/24/83 PI-4 82/88/83 PI-4 82/21/83 PI-4

,83/89/83 PI-4 83/24/83 PI-4 84/86/83 PI-4 84/29/83 PI-4 86/15/83 PI-4 87/12/83 PI-4 88/15/83 PI-4 A

B A

B 192.11 196.31 218.79 289.88 213.33 212.23 214.25 213; 61 217.94 215. 92 213.18 211.87 218. 41 217.76 212. 64 214.38 213.18 211. 99 288.82 289.69 218. 79 214. 76 A = 168.5 B = 194.8 Note: --- Water level is below sensor level

TABLE Page 4 of 6

DATE INSTRUNENT 89/13/83 PI-4 SENSOR A

B WATER SENSOR LEVEL (ft )

ELEVATION (ft

)

212. 18 213. 38 18/21/83 PI-4 1 8/1 8/83 PI-4 82/15/84 PI-4 289. 87 212.69 211. 72 216.15 218.33 221.22 A = 166.5 B = 194.8 81/86/83 PI-5 81/24/83 PI-5 82/88/83 PI-5 82/21/83 PI-5 83/89/83 PI-5 83/24/83 PI-5 84/86/83 PI-5 84/29/83 PI-5 86/15/83 PI-5 87/12/83 PI-5 8 8/1 5/83 PI-5 89/13/83 PI-5 1 8/26/83 PI-5 A

B A

B 177.61 218.31 286.67 214. 92 288.86 216.38 289.44 217. 69 287. 83 217.88 285.98 214. 92 216.36 221.61 287.68 219.87 288.98 217. 69 283.45 216.76 284. 83 219.99 285.29 215. 84 288.91 216.53 A = 122.7 B = 282.8 Note: --- Water level is below sensor level

TABLE 2 Page 5 of 6

DATE INSTRUMENT 11/1 8/83 PI-5 SENSOR A

B WATER SENSOR LEVEL (ft.)

ELEVATION (ft.)

287.37 228.69 1 2/27/83 P I-5 81/24/84 PI-5 82/15/84 PI-5 A

B A

B 213. 68 224.61 289.67 224.38 284.14 225.76 A = 122.7 B = 282.6 81/86/83 PI-28 81/24/83 PI-28 82/88/83 PI-28 82/21/83 PI-28 83/89/83 PI-28 83/24/83 84/86/83 PI-28 PI-28 84/29/83 PI-28 86/15/83 PI-28 87/12/83 PI-28 88/15/83 PI-28 89/13/83 PI-28 18/21/83 PI-28 18/26/83 PI-28 11/18/83 PI-28 81/24/84 PI-28 82/22/84 PI-28 172.98 178.86 177.82 177.59 211.97 218.58 212.28 212. 89 213.35 179.21 179.21 176.98 177.36 173.44 177.36 178.75 176.98 156.6 Note:

Water level is below sensor level

TABLE 2 Page 6 of 6

DATE INSTRUMENT 02/16/83 PI-21 82/21/83 PI-21 04/06/83 PI-21 04/29/83 PI-21 07/12/83 PI-21 08/15/83 PI-21 183.48 212.09 213.01 183.02 182.56 155.8 WATER SENSOR LEVEL (ft.)

ELEVATION (ft.)

183.48 Note: --- Water level is below sensor level

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NIAGARA MOHAWK POWER CORP.

FIGURE 40B

Extensions added EZ EVATZON

070

. 060

.050

~.040

.030

.020

.Ol0 u

0

.Ol0

.020

~ 030

.040

.050

.060

.070 224.0'-73.0'Total) g g

+

e a a cs t

~

> 4 V

va~~j~>>~~~a 4 i 4 i i X i X i i e a

o x o

19 82 v

V 0 d E

1 1

T 4 0 0 j 0 v

X V

e

> t a d

a I 0 i E 4 EXTENSOMETER EX-5 NINE MILE POINT NUCLEAR STATION UNIT"'

NIAGARA MOHAWK POWER CORP.

FIGURE 40C

Instrument damaged and repaired ZLEVATZON

.030

.020

. 020 0

.020 224.0'-224.0' 020 0

-. 020 224. 0 '297. 0

'020 0

.020 297.0'-273.0'020 0

.020 V

.020 0

-.020 273.01 233 0'33.0'-222.0' 020

.020 222.0'-73.0'020

.020

.030 224.0'-73.0'Tota2) x 4

~ <<<<4 0 j <<'.

4 v

I <<<<0 0

0 4 0 V

4 0 4 I << I 4 4 <<4 0 <<4 <<4 <<<<V X r 0 Q

~

> 4 V

<<<<0 4

0

<<<<0 v X <<X 5 4 <<0 4 <<0

<< v

<<v 0<< r 0 f I

4 0 4 4 v 1

h

% <<<<0 <<0 EXTENSOMETER EX-6 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 41

160 140 120 100 80 60 40 20 0

~

0 5

-20 m

x ~ -40 IJJ w

-60 o

-80 N

100 120 140 160 0.3 0.5 1.5 0.7 0.9

1. 1 1.3 (Thousands)

DAYS SINCE JANUARY 1, 1979 EX-3 x

EX-4 o

EX-2 0

EX-1 1.7'.9 TEMP(30 day avg)

TOTAL D IS P LACEMENTS EXTENSOMETERS NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 42

160 140 120 100 80 OO V

40 Z

Q Qv)"

20 Z

gp 0

X I-w

-20 IJj

-40 N

-60

-80

.100

-1 20 0

o EX-5 0.4 0.8 1.2 1.6 (Thousands)

DAYS SINCE JANUARY 1

1979 o

EX6 v

TEMP (30 DAY AVG) 2.0 TOTAL D I SP LACEMENTS EX-5 AND EX-6 ZONE 224'-73'INE MILE POINT NUCLEAR STATION UNIT P.

NIAGARA MOHAWK POWER CORP.

FIGURE 43

ANCHOR DEP2'H

.020 0

.020 0'-20'020 0

.020 20'-20'020 0

CJ

.020 20'-40'020 0

.020 40'-60'.020 0

.020 60t-222'20

.020 222'-250' I <<<<<<

~

g t y <<<<<<0 v

0 <<4 g g g <<1 q q <<<<<<<<<<

<<<<<<<<xi<<4ii'u V

v <<<<< <<y <<v <<0

<<1

~ <<<<0 <<<<

~

I g <<<<<<<<g i e v <<<<<<<<<<<<v

~ s I <<X h <<1 <<

Ie E4 EXTENSOMETER HEX-I SONIC PROBE NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

F I GURE 44

. 040

. 030

.020

.010 0

.010

.020

. 010 0

.010 ELFVATZON 246.0'-232.0'32-0'-230-OI ANCHOR DEPTH O.OI-45.0'5-OI 52 '

.010 0

.010 230.0'-226.0'2.5'-70.5'/)

. 010 0

PJ K "-.010 226.0'-222.0I 70.5'-84.0'010 0

.010 222.0'-220.0'4.0'-91.0'010 0

.010 220.0'-208.0'1.0'-132.0'030

.020

.010 0

-.010 246.0'-208.0'Total) 0.0'-132.0'

% lj 0

4 0

e i x r a g

s' u

~

+

a s s a v u 4 v 1

X 0

1

.I 0 4

0 0

X 0 J

a

+0 x a d

V L

9

'E X

~

4 0 EXTENSOMETER HEX-2 DCDT'S NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 45

. 630 Ql

. 620 PI

.. 590

. 570

.550

.530

.510

.06

.04

.02 0

+. 02

+. 04 Ha 0) 5 PI Pi

'0 c~

s o s s s o r o R v

% u V

v s s r o

O a v u o v I s I i s s s a x a g o o o s t r a t v s u

V s s a

a o

u o v Z s X

o w s s a

o o

x o o o v o r o v

~

I s X

GAP GAGE G IA NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 46

. 720

.690

.08

.670

.06 tq P)

. 650 PI

.630

. 620

.590

.570

.550

.04

.02 0

+.02

+.04

+.06 a

A; Ev V) 0)

U 0

. 530

+. 08

.520

+.20 PI fq 0

I )'

z a

a z )'

a t v i a a a v v z

g a a 7

U a a

a z a a v g g Z q q g a a z a

z a

a a

a z

a C v g v v

1 v a

a a

4 z v X

a i a e a z

a z

av 1 a l z v a a

Z w i v a 19 8~

GAP GAGE G18 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 47

.460 0)

. 440

~u K

. 420 PI

. 400 tq tq

. 380

~ 360

. 340

.06

.04

.02

+.02

+.04 4

V) 0 U

Q 5

fq 0

~

Q o D o 0 g

o o o g o o

Q

~

)

o V

o o

o o o o

o o

~ I o I o o i a o x o

o 1

x y o t V

v

~

a

'4 i

'0 X

h GAP GAGE G I C NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 48

.520

.500 U

PI

'. 480 K

~ 460

. 440 420 a

. 400

.10

.08

-.06

.04

.02 0

+.02 a

Ev V)

O kl V

H Ev O

Fc v g

~ e d

)

g y 0 g s

> 0 U

4 e i <

q q q

u O v 4

~

4 \\

I I

'0 X

~

0 I 4 4 0 19 E3 x s~

e i x i Ot V

~ v ~

~.

e GAP GAGE, G10 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 49

. 490 H

. 470 Ha

. 450 fq g

.430

.02 0

+.02 O

H 44vxv4hv0 V

v 4 0 4 0 0 0 v u II v 1

4 1

< 4 0 4 0 s 4'

4 v 0 J 4 i v' u

V 0

4 0 0 0

u 0 4

1 4 1 4 4 0 4 0

~9 83 4 4 4 v 0 J 4

v v I

v 4 0

'i 1

4 J 4

4 4 4 GAP GAGE G2A NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

F I GURE 50

~ II

. 370

. 350

.06

-.04 INa

. 330

. 320 aH

..290

. 270 a

.250

.02 0

+.02

+.04

+.06 0)

V H

Ev

.230

+.08

.210

+.20 H

0 D

o o g o o o v o v o L v a o

v <

a v

a o O v u o a

o o

19 82 o

o o o v o v o a j g o v I v

a o o o v v

a a I a I o v v o 0 o

o o

0 o

v 1 v )

v 1

x v 0

~.

Z v v S

o GAP GAGE G2B NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 51

.640

.20

.. 620

.28

.600

.26

.580

.14

. 560

.22

. 540 tq

. 520 K

.500 a

g

.480

. 420

.20

-.08

.06

.04

.02 0

+.02 a

0)

Cq V

H O

Ev

.400

. 380

+.04

+.06 H

0

. 360

+. 08

. 340

+.20 a

a v

~

a R \\

g a a

a a i a

~I V

I a 1

GAP GAGE G3 NORMAL NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 52

0)

U

.580 H

.560

.540

.04

.02 0

+. 02 a

Ev 0) 5 0)

CJ c~

5 0

0

+

E I

xU 1

s X

19 8.3 v + +

g

~

a 4 q 1

0 X

1 19 8M GAP GAGE G4 NORMAL NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 54

..640 Qa

. 660 H

. 620

.600

.02 0

+.02

+.04 h~

~Q V) u H

fq H

0 U

a

+

5 0

9 v 4

'I I I 4 I h

~

E 0 4 i 4 ie 83 V

y 4 > I a 4

a v

4 al I 1

~

0 0 GAP GAGE G4. SHEAR NINE MILE NIAGARA POINT NUCLEAR STATION UNIT 2

MOHAWK POWER CORP.

FIGURE 55

.620

.590

. 570 0)

.550 H

. 530 a

.520

\\

.490

. 470

.08

.06

.04

.02 0

+. 02

+.04

+.06 H

oo Cq u

H Q

fq

.450

+.08

. 430

+.20

. 420

+.12 0

a I d u u d v d

D X 0 d

d >

d r d a v )'

v r a r u d d

u 0 v

~

X d X

d V

V d d d

d x

d d d v x r d a v l: u v'

r a v d a d

u o v d

X V V d d d I d V

g d d d

V X r d a

~

1 d

X v i r d

~

GAP GAGE G5A NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 56

.590

.08

.570

.550 lQ

. 530 Cq

.520 H

. 490

.470 a

.450

.06

.04

.02 0

+. 02

+.04

+.06 Ha Ev 0) 5 U

'H Ev 5

0 fq

.430

+.08

. 420

. 390

+.20

+. 12 H

5 0

I d d r d r d d X d d

d s

rd d C

V r

d d

d d d

\\ d d

d d

d d d d 1 r d V

U d

d X d I d d d d d g

d s d

)

d d

a r X t 1

W i i d X d GAP GAGE G5B NINE MILE POINT NUCLEAR UNIT 2

NIAGARA MOHAWK POWER STATION CORP.

FIGURE 57

.420

.400 H

H

. 380

.360 Pg

. 340 a

.320

.04

.02 0

+. 02

+.04 Ha 0) 0)

V D

u g

e e

e I e

A e C

s '

u x

e e

a a

e C

e: v u u o e t g e o o o u o u

~

u

'4 g

u o o o

u o

'e o

e o q Z 1 l I e u '\\ e o

e 0

~ 0 X u I e e

u e 0 e o

u g

e e

e u

g 8 e a

1 u

1 u h u

19 82 19 83 19u GAP GAGE G6 NINE MILE POINT NUCLEAR UNIT 2

NIAGARA MOHAWK POWER STATION CORP.

FIGURE 58

rq

. 480 U

. 460 194

.440

.420

.400

.06

.04

-. 02 0

+. 02 Ha Ev CJ Ev 5

O CI c~

H 0

x 4

+

1 >

1 a d 0

~

1 II V

v +

a

+

0 s a v u 0 X

4 I 0 0 E

1 4

4 0

1 9 J3.3 V

a

~

7 a a t E

1 e I GAP GAGE GV-1 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 59

0.1 2 0.1 1

0.10 0.09 0.08 0.07 z

0.06 0.05 D

0.04 0.03 Q.

0.02 0.01 0.00

-0.01

-0.02 o -0.03

-0.04

-0.05

-0.06

-0.07

-0.08 0

1981 0.2 0

G5A 1982 1983 1984 0.4 0.6 0.8 1.0 1.2 (Thousands)

DAYS SINCE JANUARY 1, 1981 a

G5B A

TEMP (15 DAY AVG) 1.4 60

-30 ~

4J 43 20 z xO 10 KD 0 K 4J 10 20 40 GAP AND TEMPERATURE VS. TlME GAP GAGES G5A 8c GSB NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

F I GURE 60

0.20 0.15 0.10 Z

,h 005 E

0 0.00 z

w 0.05 C3 zO -0.10 0.15

-0.20 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 (Thousands)

DAYS SINCE JANUARY 1, 1981

+

G18 a

Gl C G1D GAP CHANGE VS. TIME G1A G1B G1C G1D NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 61

0.1 0 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0.00 5 -0.01 Oz -0.02

-0.03

-0.04

-0.05

-0.06

-0.07

-0.08

-0.09

-0.1 0-0.10 -0.08 -0.06 -0.04 -0.02 0.00 0.02 0.04 0.06 0.08 0.10 SHEAR (IN)

NORMAL VS SHEAR DISP LACEMENTS GAP GAGES G2A 8c G1 A NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 62

0.30 0.20 0.1 0

-0.20

-0.30

-0.30 0.10 SMEAR (IN) 0.1 0 0.30 NORMAL VS SHEAR DISPLACEMENTS GAP GAGE G3 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 63

0.1 0 0.09 0.08 0.07 0,06 0.05 0.04 0.03 0.02 0.01 0.00

-0.01 Oz 0.02

-0.03

-0.04

-0.05

-0.06

-0.07

-0.08

-0.09

-0.1 0-0.10 -0.08 0.06 -0.04 0.02 0.00 0.02 0.04 0.06 0.08 0.10 SHEAR (IN)

'NO'RMAL VS SHEAR DISPLACEMENTS GAP GAGE G4 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 64

INSET A

Pl 0

ySI 6

I I

I f~

ly I

II sl-5 I

EX 48 I

I I

~l I

Ql I

SI 8 Sl IO

+Sl 9

~ P I-5 ASLANT NONTN SO NOFCCT L A l('E TAXC SHAF (INSFT A)

&TlTI

~ TT PTC sall T4 tlTA OAI 7 A ll'0 NAONASTC STAUCTUllC I

~ OAAINAT(

l STAUCTUAC FL ANT NONTN

~TO TIIT

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~ +Tl T4++ITA

//~

NOIIVAL FAULT

/////

lg I

AF

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2

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PI 2 SI I

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Pl 3EX-3 EX-5Q p EX-6 Pl-I 4

s<

z) gP 0

(

UNIT

~

UNIT t

~TT IICACTOH-

+

CONTAINIICNT

( INSC'T

~ )

Q4.aC TOelA 70 IV TCFCC FOI.O WEST 8ENCH EL. 282 EL. 220 EAST 8ENCH BASICS A F IT2 PAT RICK NUCLEAR POWER PLANT NILE POINT NUCLEAR CENDIATINO STATIOII INSET 8

PLANT NOIITH COOLINS TONCN FAULT OoOel TM ATTN

~It&% TTE aCH S Ta&4AC TsTeCN

~SOS

~stl HCX t HCX I

NAOTTASTC FAULT

~

TT

%0 TOT TTT TTCT EXPLANATION:

0 I NCL I NOMETER LOCATION EXTENSOMETER LOCATION

~

P I EZOMETER LOCATION TRCNCH 4

(INSCT C)

APERTURE;5-CARD Abo Available On Aperture Card I ts I to Pl tO CX to ySI tl

+Sl tt

~ Pl-tl PLOT PLAN OF INSTRUMENTATION

~~/44~/

NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE I,

,I

'I J'l~

f-II

%C l'4e I"

C

'I s

I Extensions a~<ea I

I.

I

~

ELEVATION

.010 0

-.010 261-0'-227.0l

.010 0

.010 227.0'-213.0'010 0

.010 213.0'-196.0'010 0

.010 0)

V PI

.010

.0

.010

.010 0

.010 196.0'-172.0t 172.0'-130.0I 130.0I-97.0'RTVgg" CARD

.010 0

.010 261.0'-97.0'Total)

AlsoAV l bieoll Aperture Ca<<

t 0 4 0 4

0 0 0 4 4 0 0 0 q v 0 4 I 4 4 I 0 0 0

4 g

4 0 0

0 4 0 VDVDL vp'0 4 0 0 4 0 V 0 0 tt 0 DIV 0

~

4 4 0

V 0

V 0 V

I\\

4 0 0 0

4 0 v 4 4 4 4 0 0 0 4

0 0 X

EXTENSOMETER EX-I 193.0 1e 83 I O.83 19.84 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 36

I Sg C

'I k

4 Ca~

OJ L

Extensions added ELEVATZON

~

I SQ

. 020 0

.020

<<=p ~A I

I' I

235. 0 '-213. 0 '

010

-- 020 213.0'-196. 0' 020 0

.020 196.0'-172.

0'020 0

to

.010 Cq u

.020 e

.030

--040

--050 172.0'-23P. p

-020

. 020 0

-- 020

.020

. 010 0

.010 I-P II 0 0 it<<<<0 ks=<<u V

~ v 0 0

V <<<<<<0 0

v <<1 i e q 0 0 0 0 0 teeepeveLV'0 V

ev<<<<<<vuIsv I 0 X

8 9 I 0 0 0 0

P

-CPP0

<<4<<-00 0

130.0'-11g.g'20.0'-73.0l

.}~pc Oi'pel tll<~

EXTENSOMETER EX-2 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 37A

5 ~

p ~

)f4 C%

'a

~t If f-4

~

mgk V

il

. 080

.070

. 060

.050

.040

-030

.020

.010 0

.010

~

> j

-I~

0 V

ELEVATION 235.0'-213.0' 020

.010 0

.020

.020 21 3. 0 I-296. 0

'010 0

.010 296. 0'-172.

0'010 0

.010

.020

.030

.040

'-. 050

.060

.070

.080

.090

.200

120 172.0'-130.0'PKRTURg'ARB 4

0 0 e 0 x 0 x 0 0 e 0 0 0 0 e e x e x 0 0 0 0 0 0 0 19 EQ ee et

~;1t

~

0 0 ee'eee queue

~

0 0

0 0 0 5 e'I

,'gg

)

0 0 0 0 0 0

0 t o-u V

0 0 v X e X 0 e e 0 0 0 0 1 933 V

0 X e

% 0 0 19M EXTENSOMETER EX-3 NIN'E MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

F I GVRE 38A

tt

,,C I

~

Et I'RE.

I I

&It A-'.4 I,

ELEVATION 160

.150

.140

.130

.120

.110

.100

-090

.080

.070

.060

.050

.040 030

.020 V

. 010 0

.010

.020 030

.040

.050

-.. 060

.070

.080

.090

.100

.110

.120 235.0'-72.0'Total)-

De p pe%

~

W u 00 4 0 g

~ 0 g 5 g y 0 t 8

+ 0 V

E H \\

0 0 g i 0 0 0 X 4 X

0 0 4 4 0

'E 0

ie RO g a a c

~

'E E

a~ieti vr 4

'E

> > ~ o 0 R 0 1

> ~

~

Ill?-;

1j p

E 1 5 I 4 t y > y P

v < a <

O 0 s es o v 1 0 0 4 0 V

0 +

8 +

'R D

E

~

~ I S

X i s t o EXTENSONETER EX-3 NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

F I GURE 38C

C

~r i Ho'AI t+w

(;

SSZSCYlD DNEaVZH SSHXZ HOHZ SPINE NE is I O

I 11 s

~ I s

~

Is ~

II:

I!.

I ts:.

~ I 1 ~

CQo I

o I

ss O

I 1

~

o I

+

<<I I I! I 1

ss

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I lit III 1 II IIII I

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'0SST I

hshr Tsshr ATSS

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<,tg APERTUIIg'ARY pgso Available 0+

Aperture Cart!i GAP GAGE 63 SHEAR NINE MILE POINT NUCLEAR STATION UNIT 2

NIAGARA MOHAWK POWER CORP.

FIGURE 53

1 l

4I 4

ical A

+ca (

I

,,<

gh yo> C>~ ~ggo< u u 0s 0 i 1 s s i s 0 s o Xssssoas siss*sob a<os isoao < is u s s s s u s s s o O s X S I s s i s i EXTENSOMETER EX-4 NINE MILE POINT NUCLEAR STATION UNIT 2 NIAGARA MOHAWK POWER CORP. FIGURE 39A c ~ ~ ~, tll 'f~4 ps~ l~ 'la& v4 r.s 4 1 0 1$ ~ i ~ ~ I ~

ML18037A006

Text

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