ML19224B013

Chronological Radiological Data for 790328-0401

ML19224B013
Person / Time
Site:	Crane
Issue date:	04/01/1979
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
OLE-790401, NUDOCS 7906130426
Download: ML19224B013 (46)

Text

$

3 50-320 Chronological Radiological Data 3/28/79 - 4/1/79 from IE files

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7006130YM l

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• checked at hospital

_28 March 41 x 10 10 pCi/cc 0FFSITE T_ime

_ Location mr/hr fpCi/cc Direct d 0900 Iodine Town of Goldsboro, South

• l.2 x 10-9 0940 Town of Goldsboro, North 1.2 x 10-8 a 1111 Observation Facility, East of site across river 3

-8

-9 t' 1130 10 -10 Rt. 283 Near Harrisburg (State) 0.1-0.3

? 1130 Rt. 230 By River (State) 0.8

' *1300 Grass Sample (State - RAT) g1403 Middletown Bkg Middletown Square 1-5

_g 3.5 x 10 Middletown Swim Club

-8

<1 1.2 x 10.g 1.4 x 10 1500 Harrisburg (NRC)

Bkg

, 1500 Middletown (NRC)

<1 1500 Arms in air 1630 Arms reports plume N and NE of plant at distance of N16 miles primarily Xe-133 m (instrument saturates at

[.

s2 mi. N of site 0.1 mr/hr Wind 8 mph from 170

'1815 Rte. 441 and RR tracks s 1/2 mile NE I

of site i

Rte. 441 and south Union St. Middletow,

<1 mr/hr s2-1/2 mile north of site

<1 mr/hr

< min. det 1720 1 mile north of site j

Roylton - 2 miles north 2.3 x 10'9 9

9.6 x 10-s1800

{

milk sample s 1 mile from site (State) - RAT no det. Iodine 1830 (Rte. 441 Boat Club - 2 miles north 1835 (Rte. 230 s3 miles north

<.05 mr/hr

<1 mr/hr 181 107 W

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(

28 March On and Near Site Gross Direct on

_ Cartridge (MDA 1010)

L 0750 W corner island

< 1 mr/hr 3 0842 site perimeter (GE-9)

< 1 mr/hr

, 0905 W corner island C1DA

' < 1000 N parking lot 3 mr/hr 4 1000 base of containment 50 mr/hr

" 1029 North gate (GE-2) 1 mr/hr

<MDA

~ 1057 East island (GE-4) 7 mr/hr TMDA f) 1100 NE Unit 1 1.75 x 10-9

1104 SE (GE-5, perimeter) 2 mr/hr 7.8 E-9

,1147 SE (GE-5)

1200 7.8 x 10-8 East Island (GE-4)

~9 3 x 10

'1200 North gate 5.9 x 10'9

'1332 Cooling tower (400 ft.

10 mr/hr above)

^ 1332 Warehouse 3 mr/hr

- 1333 East island (GE-4) 1 mr/hr 1.71 x 10-9

1333 South island 0.1 mr/hr

,-1350 North parking lot 15 mr/hr I

1355 North Gate 3 mr/hr 1420 North Gate

-7 6.8 x 10 41400 Helicopter (300' above 20 mr/hr i

contain.)

0 1400 Unit 1 control room

-7 1.7 x 10 particulate 1432 Unit 1 control room

-8 6 x 10 gross iodine d 1434 North Gate 34 mr/hr 181 108 V & inph 190'

f

. 28 March On and Near Site Gross Direct Time Location on Cartridge (MDA _1010)

M 1630 North gate

~

2 x 10 gross fodine Center of door

)V1715 Door edge 2 R/hr 300 mr/hr

{ 1830 North gate (13 mr/hr)

(26 mr/hr)

NRC vv,ml/2 mile NNE (0.5 mr/hr)

(0.05 mr/hr) i wind 8-10 mph from SSE 1917 NW Boundary 10 mr/hr 1920 NW Boundcry 12 mr/hr 1923 NW Boundary 20 mr/hr 3 mr/hr 1923 Switching tower (1 mr/hr j

North gate area I

(1 mr/hr 1930 Aux. Bldg Access

0. 4

}

corridor i

Aux. Bldg exhaust vent (0.1 area RX. Bldg Booster pump 600 area Personnel Access Hatch 20 RX. Bldg Dome 4

2 x 10 R/hr (unchanged) 1930 Contractor 81dg.

8 corridor

{

Fuel handling exhaust 500 2010 N of plant at warehouse i

varied over few minutes 2-16 mr/hr

\\0\\

a Time Location Direct Cartridge (MDA 10-10) 2015 Licensee estimates 5-8 people may have received 0.5 - 1 Rem dose - laying plastic sheet in auxiliary bldg.

W O2045 Auxiliary Bldg - 305' near puddles 8 Rem /hr no puddles 1 Rem /hr AB Waste Disposal area 2 Rem /hr Cocling water for containment fans 4 Rem /hr Spent fuel pool area 10 Rem /hr Containment Dome 20,000 Rem /hr Aux Bldg 281'near elevator 7-10 Rem /hr Aux Bldg 305' no H O 1 Rem /hr 2

-2 uCi/cc RX coolant letdown H O I-135 2 x 10 2

2140 Center Door )*See data at 1715 1.6 R/hr Door Edge

)for comparison 2200 Air sample (Brookhaven) Rt. I-283 No iodine Detected 2330 Warehouse area 50 mrem &

365 mrem /B 1

2340 GE-10 PM of warehouse (NRC)

MDA Van (1 x 10 1) 29 March

[0011 Northgate MDA Van (1 x 10~9 )

I

-7 fN0030 Unit 1 data Aux Bldg Vent Monitor 3 x 10 uCi/cc fj/EE j0000 Questionable particulate 1 x 10 t

Noble gas 2 x 10 (stopped flow 84,000 cfm water to auxiliary building) k 0050 North gate 3.5 mr/hr Observation Center

{0.1 mr/hr Control room 5 mr/hr Unit #1 machine shop 40 Rem /hr 0330 Restart Aux bldg vent 0355 GE-9 just W of Rec. Bldg 20mr/hr

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a

' Time Location Direct 0410 Cartridge (MDA_10 10) 50 0530 1000 0400 GE-100 river bank on island 1

0405 25 0530 2

0410 GE-8 W boundary of island 28 0420 26 0425 North gate 27 0430 GE-7 Southern boundary of island 26 0600 Goldsboro - 1 mile due west 20 (20 )

(30 B) 0650 Control Room 1 mr/hr 0710 Containment dome deck monitor failed and logged 3000 R/hr out of service 0710 Personnel hatch 10 mr/hr 0745 Unit 2 control room f.6 e mr/hr 0830 I

Observation center (0.1 0925 Based on plant instrumentation Fuel Handling BuildinD Particulate 1.47 x 10 7 k8bie* gas d:N N i

\\

g Aux Bldg Unit 1 Particulate 1.37 x 10-6 Iodine 1.15 x 10-Noble gas 2.78 x 10 5 t

Unit 1 Plant Vent Particulate 5.94 x 10 0 Iodine 8.46 x 10 7 Noble gas 3.1 x 10 5 1014 GE-10 Wedge of Island GE-4 Edge of Island 2.5m/ rad 6377 10m/radC37(

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. Cartridge (MDA 10 IU Time Location Direct 1038 GE-6 Strip of Island 1.5 m/ rad 4{} [

1140 Unit 1 Control Room 0.1 mr/hr Unit 2 Cor,t ol Room all area monitors decreasing 1215 Aux bldg pumped out; 400 mr/hr putting p?astic sheating on floor 1410 Unit 1 Control Room 0.1 mr/hr Unit 2 Control Room all area monitors decreasing p

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1410 13' above Unit 2 stack 400 1420 North End of Island 4 fl-4 wtG 1425 O side of Island 1

1450 SW side of Island 1

1630 SW side of Island 4

1650 North Parking Lot (1

1730-1930 15 readings on site 0.1-1.8 most at 'gp a 0. 6 f

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i , Time Location Direct Iodine 1915 Rt. 441 Boat Dock (tri city) <.05 mr/hr 1930 Harrisburg Airport (2 mi NNW) 12 mr/hr 2010 Harrisburg Airport 2 mr/hr 2045 Arms reported plume NNW of plant measured out to Harrisburg over Harrisburgy plume s3000 ft. wider at top than bottom s4-5 miles wide at Harrisburg PIC-6 measurements

• 2300 North of Hughspire (6 miles NNW) 1 mile north of Hughspire - Kunkel School

?< 3 mr/hr Omstead Plaza (3 miles NNW) 13 mr/hr Harrisburg Airport s2 miles NNW 5 mr/hr 12 mr/hr "s2000 3 milk samples of Dauphine Co. (State-Ret) 4 milk samples, York Co. < min. det. others o.k. Sample 4 mil N of site MDA 14 pCi 21 pCi 29 March ds0030 Flour sample from truck NY from Harrisburg (State) } 0010 no activity Harrisburg airport (NRC) MDA is 1 x 10 ~9 MDA 40000 Stopped dumping water to aux. bldg. Winds from ESE 8 mph 0130 5 miles N (Honda dealer on Rt. 230) 1 mile outside Middletown <0.1 mr/hr Steelten (7 mi.) < 0.1 <0_1 '0600 0600 Goldsboro - 1 mi. due west W. Side of river 20 nr/hr (20A) (30A,s) 7.47 x 10-8 ,0715 West side of river i 1 mr/hr ,0721 2 0728 3 181 121

i . Time Location 0735 Direct West edge of island Iodine 0745 3.5 s4 mi N of site 0815 1 wind from 150 to 1200 0 6-8 mph 0845 Arms in air 0930 Capitol City Airport 1000 0.15 mr/hr Observation center 1045 <0.1 mr/hr Arms reported plume from camp Hill line s10 mi out from plantto Hunnelstown - 0.2 mr/hr at Cent s 0.5 mr/hr max; plume cons, tant at 1 mi 500-1000 ft; a gamma spectrum taken near the ground showed no iodine peaks; approached plant from upwind side to within 100 yards of cooling towers - levels seem much lower than yesterday 1145 Report from Met Fd nelicopter using (RO-2) ion chamber w/no window at time flight udth of plume 290 -320 0940 - Over stack 500 mrad /hr beta gamma 120 mr/hr gamma 1015 - 2 miles at 700 ft 5 mrad /hr beta gamma 3 mrad /hr gamra 1030 - 4 miles at 750 ft 8 mrad /hr beta gamma 1145 5 mrad /hr gamma Capitol City Weather altitude surface from 150 @ 3 mph t' 3000 ft from 210 @ 25 mph F cani> W W her i at 1::: #t X h M s ts" LWn -- ?.L' -74144c E4m c 15 North Parking tot 2 mr/hr 0 Unit 1 Cooling Tower 1 mr/hr \\Si 122

i Time Location Direct Iodine 1435 Weather Station (North End) 0.7 mr/hr a 1 0 (Helicopter) Royaltron p 2 miles NNE 6 1450 Weather Station (North End) 0.1 mr/hr 1450 North End of Island fallowing <0.1 mr/hr the plume 1500 Capitol Weather at 1500 ft. W to E at 8 knots Middletown at 300 ft W to E at 10 knots 1530 (Helicopter) Golf :ourse el-1/2 mile NNE Bkg ~ 1530-1540 (Helicopter) Royalton area v2 miles NNE O.1 1630 Results of 7-morning 0600 milk samplee h % dowsptM-n and York negative,.4 area water samples taken he H 1600-1630 (Helicopter) York Haven area r2 miles 5 <.1 .1 1700 120 mil sample of Primary Coolant 1000 R/hr 1700 ARMS - Two Plumes N/ 1. Residual Plume N to NW pr/hr between Hershey and Mechanicsburg, Pa. Verticle Heights .t Top - 3200 ft activity greatest Bottom - 500 ft in middle No indication of plume N to NW at l 3-4 miles from plant. 2. New Plume - S of plant Measure-ments witAG. M. Survey - Window closed - Fenceline - south of plant 10 mr/hr -1/2 mile south of fenceline 0.5 mr/hr 181 123

g Time Location Direct Iodine 1720 Observation Center $1/2 mile East Bkg Middletown ~2-1/2 miles North Bkg Goldsboro s 1 mile West Bkg 2015 ARMS - Circled site in an 8 mile radius 25-50 pr/hr and detected only residual pockets meas-uring 25-50 pr/hr. No plume detected 2230 ARMS - Plume touching down detected. 2230 ARMS - Plume touching down about 2 mile from plant at Hill Island - Plume splits at Hill Island 2230 ARMS - Width of Plume about equal to width of river. Plume touches down about 1 mile from plant at Hill Island. Plume splits: - at East Shore line 4 mr/hr - at 1 mile N of Hill Island near Olmstead Air Force Base 1 mr/hr - at 5 miles from plant pr/hr 30 March 0115 Status re State Sampling river water - 4 samples downstream (before 2:30 pm) negative rain water - overnight from H'bupg (MDA 0.06 nano Ci/m ) no I-131 flour sample - Camp Hill (Bay St. Milling) negative milk samples - (see above 1630 hrs) i s0800 results of soil samples i sampled 0330 hrs 3/30 Elmford Shopping Plaza, NW of Middletot%/, 3.5 mi NE of No I-131 No other det. site j sampled 1445 hrs 3/29 base of weather station, N end of Island No I-131 No other det. 0730 rt 441 3 mi from site in Middletown area 2 mr/hr 18l 124

_ RADIOLOGICAL DATA CODES Informatie>> Type l. Ground survey Information Source A NRC 2. Helicopter survey B 3. In plant survey Licensee (Metropolitan Edison) C In plant Area monitor Commonwealth of Pennsylvania 4. 0 00E 5. Air samp' E FDA - HEW 6. Milk sampie F 7. Water sample Other (identify by name) 8. Soil sample 9. Vegetation sample 10. Thermoluminescence dosimeter (TLD) 11. Radioassay data 12. Information only M L7 7 'w+p wo.-

PGuinn 4/6/79 '. MILE 7 Job AA CilRON0 LOGY OF RADIOLOGICAL DATA Date: March 28, 1979 Information Information Type Source Time (see code table) (See code table) Location Results and/or Description 0730 6 C Junction PA-441 and I-283 Minimum detectable limit (MDA) 0750 1 B W. Corner of Island < 1 mR/hr 0842 1 B Site perimeter (GE-9) < 1 mR/hr 0900 5 8 Goldsboro, PA - South 1.2x10f0u Ci/cc (recheck - 1 x 10-u Ci/cc 5 B W. Corner Island < MDA 0905 -8 1 0940 5 B Goldsboro, PA - North 1.2 x 10 uCi/cc 1000 1 B N Parking lot 3 mR/hr 1000 1 8 Base of Containment 50 mR/hr 1029 1, '5 8 North Gate (GE-2) 1 mR/hr, < MDA 1057 1, 5 B East Island (GE-4) 7 mR/hr, <gMDA 1100 5 B NE Unit 1 1.75 x 10 uCi/cc-9 1104 1, 5 B SE (GE-5, Perimeter) 2 mR/hr, 7.8 x 10,gCi/cc 8 1111 1, 5 8 Observation facility, east 3 mR/hr,10 to 10 uCi/cc of site across river 1130 1 C Rt. 283 near llarrisburg 0.1 - 0.3 mR/hr 1130 1 C Rt. 230 by river 0.8 mR/tr8 1147 5 B SE (GE-5) 7.8xlg uCi/cc 1200 5 B East Island (GE-4) 3 x 10 _gCi/cc 1200 5 B North Gate 5.9 x 10 uCi/cc 1300 9 C Unknown

Background

1332 2 8 400 feet above cooling tower 10 mR/hr 1332 1 8 Warehouse 3 mR/hr -9 1333 1, 5 B East Island (GE-4) 1 mR/hr, 1.71 x 10 uCi/cc 1333 1 B South Island 0.1 mR/hr 1350 1 8 North Parking lot 15 mR/hr m 1355 1 B North Gate 3 mR/hr -7 1400 5 B Unit 1 control room 1.7 x 10 uCi/cc particulate 1400 2 B 300 feet above containment 20 mR/hr N Os t swvt*t t 9 e*f P V

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CHRONOLOGY OF RADIOLOGICAL DATA (Continued) Date: March 28, 1979 Information Information Type Source Time _(see code table) (See code table) location Results and/or Description 1403 1 B 1403 5 Middletown ~9 Middletown Square 1-1.5mR/gr3.5x10 uCi/cc 8 1403 1, 5 B 1.2 x 10 uCi/cc 1420 5 Middletown Swim Club 1432 5 North Gate < 1 mr/hr 1.4 x 10~9 B uCi/cc 1434 1 Unit 1 contrel room 6.8 x 10_7 uCi/cc B 1500 1 North Gate 6.8 x 10 uCi/cc gross iodine B 1500 1 Harrisburg 34 mR/hr wind (8 mph from i70 ) A 1500 11 Middletown

Background

A 1630 2 < 1 mR/hr D N and NE of plant at ARMS in air (Helicopter) D 16 miles 0.1 mR/hr Xe 133M primarily. (instrument saturates at $2 1630 5 1715 3 North Gate miles N f plant) B 7 3 Center of door 2 x 10 uCi/cc B B 2 R/hr 1720 5 Door Edge 5 1 mile N of site 300 mR/hr B B 2.3 x 10 uCi/cc 1800 6 Roylton - 2 miles North 1815 1 1 mile from site 9.6 x 10 uCi/cc C Rte 441 and RR tracks No detectable iodine B ( l mR/hr sl/2 mile NE of site 1, 5 B Rte 441 and South Union St. Middletown 1/2 Miles < mR/hr, MDA 1830 1 N of site B ~~^ 1830 1 Rte 441 Boat Club - 2 miles N ((! A North Gate < 0.05 mR/hr 13 mR/hr 26 mR/hr wind 8'to 10 mph from SSE North Gate, 1/2 mile NE 0.5 mR/hr rsJl 330 1 0.05 mR/hr' N A Rte 441 Boat Club 2 miles N 0.05 mR/hr ,y-._.. J h

_ CHRONOLOGY OF RADIOLOGICAL DATA (Continued) Date: March 28, 1979 Information In formation Type Source Time Isee code table) .(See code table) location 1835 Results and/or Description l 1915 B l Rte 230 ~3 miles North 1917 B Rte 441 Boat dock (Tri City) < 1 mR/hr 1 1920 B NW Boundry < 0.05 mR/hr 1 1923 B 1 NW Boundry 10 mR/hr B NW Boundry 12 mR/hr 1923 1 20 mR/hr B 1 Switching tower 3 mR/hr 1930 B 1 North Gate area <1 mr/hr 1930 B Harrisburg Airport (2 miles NW) <1 mr/hr 3 8 Auxiliary Bldg. access corridor 12 mr/hr 3 8 Auxiliary Bldg exhaust vent area 0.4 mr/hr 3 8 Reactor Bldg Booster Pump Area <0.1 mr/hr 3 B 600 mr/hr 3 Personnel Access hatch 8 Reactor Bldg dome (unchanged) 20 mr/hr 3 B 3 Contractor Bldg. corridor 20,000 R/h'r s2000 8 5 Fuel handling exhaust 8 mr/hr C Dauphine County - 3 samples 500 mr/hr 2010 1 York County - 4 samples 1 sample 4 miles north of plant B 1 Harrisburg Airport 21 pci others MDA 14 pci B N of plant at warehouse 2 mr/hr 2015 2-16 mr/hr varied over period 1 8 Auxiliary Bldg of few minutes Licensee reported 5 to 8 people 2045 may have received 0.5 to 1 rem dose while laying plastic sheet 2 0 NNW of plant to Harrisburg in Auxiliary 81dg Over Harrisburg plume is at $3000 feet. Wider at top than bpttom. 4 to 5 feet wide at Harrisburg. M , { *? Nt** *v t' s CO e m =n+,y..,4,,,- e _g-. y.

CHRONOLOGY OF RADIOLOGICAL DATA (Continued) Date: March 28, 1979 Informati6n Information Type Source Time (see code table) (See code table) location Results and/or Description ~2045 3 8 Auxiliary Cldg at 305' level near puddles 8 Rem /hr no puddles 1 Rem /hr Auxiliary Bldg. disposal area 2 Rem /hr Cooling water for containment fans 4 Rem /hr Spent fuel pool area 10 Rem /'.- Contain.nent dome 20,000 Reni/hr Auxiliary Bldg. 281' level near elevator 7-10 Rem /hr Auxiliary Bldg. at 305' level - no water 1 Rem /hr Reactor Coolant letdown reactor I-135(?) 2 x 10 pCi/cc -2 2140 3 B Center door 1.6 R/hr (' ee 1715 data for s door cdge 2200 5 B(?) Rte I-283 (Brookhaven) No iodine detected comparison) 2300 1 A(?) N of Hughspire - 6 miles NNW <3 Mr/hr 1 r.ile N of Hughspire - Kunkel School 13 mr/hr Omstead Plaza - 3 miles NNW 5 mr/hr Harrisburg Airport w2 miles NNW 12 mr/hr 2330 3 8 Warehouse area 50 mrem gamma 2340 6 A 365 mrem beta gamma NW of warehouse (GE-10_ Van-M0g' iodine) (1 x 10 4 .... ~ - -,,.. .g.

e _~ l b t a o 8 n o d f i a e o g t m g d s m g 1 l e a o B u g l e q ) a d g ( e a x t e n ) P u e e l i e b i n A t d n o as o i a r f i o l a i d h t t ug p c yI t / r-o i r ie t n R o r e tl A iA e m tb c t rb D vD V i. s a ao M iM 3 0 no', e w pN ( t( D c g c m g cc c ac d ,c r n cc c c ai ) / e (. l o i // / e/ B m mC o'j / p)i i i li d mmCC C bC mp d' a C n uf pp p ap r x a dc rrru p t E( t rh r hhhA { s d06 _4 n 9 c9 h/ h /// r rr rer1 rm? 0 e ~ e /R r/ RRRth rhh h vh rhnt t e000 0 t0R mh m mmmr/h// /i/xh/i/ l p 0,1 1 1 e1 n u / e p aR/RR RtR /R aR d 1R r 111t mR mm mam7Rmt C s o4 xx x x5 m e t8 s m g 4.m o 0 0 R S(12 1 N13<54 000e0 87 6 e0 n 0o0 < <<R2122 2 n2711C2 AT A g D d dd t 1 L n n 8nn f A o w s aa o e C o rl l W r t I oss y G e e tII r e O t pl l c a u oa d anf d d L rm r h e d) eoo n O oo e Sd i s R u e I pr t n D rf Me k y o l i o n ea A i l f nr b i e h i e nd ei oaa mv c R AYh C t n d m bd n i F a Ng mh o i n r 1 rma i t h r noc s7 Wru e oh c ueeooa(H 0 gk o )t( r eoeh f o n l cbttiRM 0u t vbtt oorl w 9 W uusaat N3 on si aud) r e o b riGGal 1 2 o u r..Gon? oel n t O st r vo e et J W S a(bdon e rhhrr# L i l ell 0 h l rmatt ettiti e 918t7 s dst s d w siro roHrrsnimRme l g ar - - - rI oob on t EEE oE o.oe l nr d M HF NNOCU5 1S GGGNG GWCP M M w i m ) e e l n b o a i eT t c are mud roo A oS c AC AAAAAA AAAAAAAA CAAB8BE f n e I es ( 9 7 9 ) 1 e e n l l o b p m 9 i a 2 t T a ae S h mpe r c ryd u r oT o o a f c 2 M n l 1 5F 511331 I e 11211111 6153326 e 1 s 1 ( -e e 0 00 C0 0 t m 0 a 13 35 050050 0000005 i 0 00 00 350123 0005111 3 D T 0 00 00 0 1 334444 5666777 000000 0000000 ._ x} D _ c C

CliRON0 LOGY OF RADIOLOGICAL. DATA Page2ofd Date: March 29, 1979 i Information Information Type Source Time (see code Table) (see code Table) Location Results and/or Description 0715 1 A W. Side of River 1 mR/hr 0721 1 A W. Side of River 2 mR/hr 0728 1 A W. Side of River 3 aR/hr 0735 1 A W. edge of Island 3.5 mR/hr (?) 6 E Middletown 3.1 PCi/E iodine 0745 1 A

• 4 miles N. of site 1 mR/hr 0745 3

B Unit 2 Control room 1.5 mR/hr 0815 12 A Wind from 150 to 120 6-8 moh i 0830 1 A Observation Center <0.1 mR/hr 0845 12 A ARMS helicopter in air 0925 5 B Fuel Handling building 1.47 x 10.7 pCi/cc particulate 1.23 x 10_6 pCi/cc Iodine 2.73 x 10 5 ~ pCi/cc Noble gas Aux. Bldg. Unit 1 1.37 x 10 7 pCi/cc Particulate 1.15 x 10_6 pCi/cc Iodine 2.78 x 10 5 pCi/cc Noble gas ~ 1 Unit 1 plant Vent. 5.94 x 10_8 pCi/cc Particulate 8.46 x 10 7 pCi/cc Iodine 3.1 x 10 s pCi/cc Noble gas 0930 1 A Capital City Airport 0.15 mR/hr 0940 2 B Over stack 500 mR/hr beta gamma, 120 mR/hr gamma 1000 1 A Observation Center <0.1 mR/hr i 1014 1 A GE-10 wedge of Island 2.5 mR/hr beta gamma 1015 2 8 2 miles at 700' 5 mR/hr beta gamma, 3 mR/hr gamma l 1 A GE-4 edge of Island 10 mR/hr beta gamma 1030 2 B 4 miles at 750' 8 mR/hr beta gamma, 5 mR/hr gamma 1038 1 A GE-6 strip of Island 1-5 mR/hr beta gamma 1045 2 D Helicopter reading Plume from Camp Hill to Hunnelstown-l 0.2 mR/hr at Centerline

• 10 miles from

-^ W plant. At 1 mile

• 0.5 mR/hr max. and plume constant 500 - 1000 feet.,A gamma 1

--~ i

i CHRONOLOGY OF RADIOLOGICAL DATA Page 3 of 8

• Date:

March 29, 1979 Information Information Type Source Time (see code Table) (see code Table) Location Results and/or Description spectrum taken near ground showed no iodine peaks. Approached plant to within 100 yards of cooling towers. 1140 3 B Unit 1 Control room 0.1 mR/hr 3 8 Unit 2 Conteci.coom all area monitors decreasing 1215 12 B Auxiliary bldg. pumped out plastic sheets being placed on floor. 1315 1 A N. Parking Lot 2 mR/hr 1400 1(?) A Unit 1 Cooling tower 1 mR/hr 1410 2 B 13' above Unit 2 stack 400 mR/hr (?) 1410 3 8 Unit 1 Control room 0.1 mR/hr Unit 2 Control room All area monitors decreasing 1425 1 A W. side of Island 1 mR/hr 1435 1 A Weather Station-N end. 0.7 mR/hr 1440 2 0 Roylton s 2 miles NNE 6 mR/hr 1450 1 A SW Side of Island 1 mR/hr 1450 2 0 N. end of Island following plume 0.1 mR/hr 1530 2 D Golf Course s 1-1/2 mile NNE background 1530 to 1540 2 0 Royalton area s 2 mile NNE 0.1 mR/hr s1600 11 F-Bettis See below See below Lia N t:

CHRONOLOGY OF RADIOLOGICAL DATA Page4ofd Date: March 29, 1979 Information Information Type Source Time (see code Table) (see code Table) Location Results and/or Description Sampling of primary coolant water collected 3/29/79 s 1600 and analyzed by Bettis on 3/31/79 revealed: Coolant Conc. Coolant Core-(pCi/cc) Inventory Inventory Fraction (Ci) (Ci) (%) I-131 2.3 x 104 4.3 x 106 6.2 x 107 6.9 I-133 6.5 x 103 2.1 x 106 3.5 x 107 6 Sr87/90 5.3 x 10 1.7 x 103 2 x 107 .009 Cs-134 6.3 x 101 2 x 104 1.3 x 106 s2 Cs-136 1.3 x 102 5.4 x 104 3 x 106 2 Cs-137 2.8 x 102 9.2 x 104 8 x 105

• 10 (?)

Ba-140 2.0 x 102 6.6 x 104 1.1 x 104 0.06 Bettis Concludes: Gap to core activity ratios of Ba and Sr indicate no fuel releases but I and Cs. ratios indicate releases from the fuel. ~1600 12 B Plant I 3.1 rem and 3.5 rem exposures received by. 2 employees during God *</" i sampie 'I? m "1 C<*h~/ f ' VA-l 3 B auxiliary bldg. 300 to 800 mr/hr and up to 100R/hr on hot spots 1600-1630 2 0 York Haven Area N <0.1 to 0.1 mR/hr 2 miles South 1630 1 A SW side of Island 4 mR/hr }$1650 1 A N Parking Lot <1 mR/hr __.1700 2 0 Residual plume N to NW between Hershey and Mechanicsburgh: Top of plume,3200' bottom 500' in middle no plume N to NW Le4 at 3-4 miles from plant. Lea

CHRON0 LOGY OF RADIOLOGICAL DATA Page 5 of 8.' Date: March 29, 1979 Information Information Type Source Time (See code Table) (see code Table) location Results and/or Description New plume 5 of plant read 10 mR/hr (Fenceline) and 0.5 mR/hr at 1/2 mile. 1700 6 8

---

?--------

<0.2 PCi/E iodine (sample suspect) 1700 6 B 1.2 mile N on 441 1.4 PCi/E iodine 1720 1 A Observation Center background 1/2 mile east 1 A Middletown 2-1/2 mile N background Goldsboro s 1 mile N

Background

I r1730 1800 6 C 5 miles NW 21 PCi/E iodine i ' 17 3c - 1930 1 A Onsite Ranged from 0.1 to 1.8 mR/hr i 2015 2 0 8 mile radius of site 25 to 50 pR/hr - no plume detected 2230 2 D Plume touching down 2 miles from plant at Hill Island. Piume splits at Hill Islano. 2230 2 D Plur.;e width about same as river width and touches dcan 1 mile from plant at Hill Is plume splits at: i East shore line 4 mR/hr 1 mile N of Hill Island Near Olmstead AF Base - 1 mR/hr 5 miles from plant per/hr --?--- 5 B N Weather Station 22.6 PCi/M3 5 B 2.8 Miles SSE 20.1 PCi/M3 5 8 0.4 Miles E 20.3 PCi/M3 !33 observation center ( 5 B 15 miles NW l.83 PCi/M3 5 B 9 miles SE 0.27 PCi/M3 j 1.6 Mile SWS HU "> 28.9 PCi/M3 i __m 5 B 5 B 13 Miles S 0.14 PCi/M3 f ysa .4 i .. - ~. .y 3

~' '8 fo 6 n t o e i g t a p P ircse D r m r r r r r r r r r r r r r o 5 m m m m m m m m m m m m / d 0 8 6 6 3 7 7 8 7 5 7 9 2 na 2 1 1 1 2 s t l use R t se n n W o o h r i i t e t t A e u l a a t T o 1 i t t n A d S m s s e D c m n b b l d 1 u u ~ a L r n S S E d W E W aW N N S n a l A n sN dN dN C oE FE e a IW aE nN sS o ws rs s l S n k i S 1 c l I n t e s 4 n s se R e l e e o tl Yl o a I r oe oe ae G o O al rs 2 e IW yl i vi ee F S ei li Ii ei s l l sl yl b ei L t il rm rl e h l i bi O a e gi t t t e l r r M eM M m h m mm I M d d t u l c s4 m u s ul e4 u5 h4 e1 o D o b r i l l d6 r4 l 5 A l o e oi h a o R o0 D9 R W SM S0 L0 K0 S1 i o o h G M2 N1 C1 F O ) Y e G l O b L na O ot N i O t e R ad H mo B B B B B B B 8 B B B B B C rC o ~ f e ~ ne ~ IS ( ) c i n b e o a w i T t e ape 0 0 0 0 0 0 0 0 0 0 0 0 0 myd 1 1 v ri o 1 1 1 1 1 1 1 1 1 1 1 o C fn e I e S( m 99 p 77 9/ 3 1 9 2 ro9 h/ tt7 e c3 q / m r 99 ao t72 i T_ Mt s9/ 1 1 3 3x-c-

GICAL DATA ~ ~ ~ ~ Page 7 of 8 Information Type Time _(See Code Table) Information 3/2979 _(See code table)_ _ Location 3/31/79 B _Results and/or Description 10 Total time North Bridge 36-48 hrs 0.7 Miles NNE 37 mr 10 B North Weather Station on the Island - 0.4 Miles N 10 81 mr (on site meas.) 8 Falmouth 2 miles SSE 10 12 mr B Shelley Island Center 0.41 Mile W 7 mr 10 B Sta. 152 - 0.4 miles N 0.394 mr/hr (rate 10 B Sta. 252 - 10 0.642 mr/hr (rate) B Sta. 452 0.3 mile ENE 2.4 mr/hr (rate) 10 B Sta. 553 0.2 mile E 0.962 mr/hr (rate) 10 B Sta. 8C1 - 2.3 miles SSE 0.221 mr/hr (rate) 10 C Sta. 952 - 0.4 mile $ 0.507 mr/hr (rate) 10 B Sta. 1151 - 0.1 Mile SW 2.18 mr/hr (rate) 10 B Sta. 1651 - 0.2 mile NNE 1.72 mr/hr (rate) t m M f 7C-M-%W e4 Pye*+tt**9e*y*.e**+4y W y ,m,, 7.-_-.. 1;

CHRONOLOGY OF RADIOLOGICAL DATA Page8of8) Information Type Information Tine (See Code Table) (See code table) Location Results and/or Description 3/29/79 3/31/79 10 B Sta. 1452 - 0.895 mr/hr (rate) Total time 0.4 mile WNW 36-38 hrs 10 B Sta. 4Al - 0.653 mr/hr (rate) 0.5 mile ENE 10 B Sta. 5Al 0.163 mr/hr (rate) 0.4 mile E 10 B Sta. 6Al - 0.803 mr/hr (rate) 0.4 mile NNW 10 B Sta. 1081 - 0.286 mr/hr (rate) 1.1 mile SSW 10 B Sta 1281 - 0.183 mr/hr (rate) 1.6 mile WSW 10 0 Sta. l<1 - 0.069 mr/hr (rate) 2.6 miles N 10 B Sta. 7FI - 0.028 mr/hr (rate) 9 miles ENE 10 B Sta. 4G1 - 0.031 mr/hr (rate) 10 miles ENE 10 B Sta. 9G1 - 0.04 mr/hr (rate) 13 miles NW 10 B Sta. 15G1 0.05 mr/hr (rate) 15 miles NW c73 10 B Sta. 7G1 - 0.04 mr/hr (rate) 15 miles SE w N

) 8 am 0 m r r 0 ag e e r w w h ( n o o / o 1 t t R m i t t g g p i n n 1 n i i i ) 5 U l l n 4 0 0 r r 1 1 1 o o a c h s / 0 0 0 0 3 1 4 m o o 0 h e R o c c 6 t D m r f n n s ( r e e s e e e o / i) w w l e d mr t t n n e e e s i a kw b b g d ( o () () n o t k k i i s ) r rc rc d t a l m h g h a h a a r u m /n /t /t e o s a Ri R s R s r f 4 e g ml m m 1 R o d d l A a 0o 5 n 0n l D 0 t 2 c 1 a 5 a A M e b ( a a '0 z c0 a o4 l l 1 P AT ed ge A vn nt D oa ii E b ps S L a' p S C '0 '0 '0 0 of A '0 '0 f5 h o 0 0 0 0 5 '0 '0 o6 S '0 0 0 0 '0 '0 0 7 7 6 I G O 0 9 8 9 0 0 9 5 E 0 L n 9 9 8 E E E 6 tt dN 6 O o W W E E N N N ha o 1 I i S S N N E E N E E E E g oi D t i s wm A a d d d d d d d d d d d l n e 5 R c i i, i i i i i i i i i f o g5 o r r r r r r r r r r r ei d E F L G G G G G G G G G G G Rt E3 G O Y G ) O e L l O n b N o a O ie t R tc H ar e C mu d B B B B B B B B B B B B C B ro o oS c fn e I e s ( ) e n l o b i a t t ae mp e ryd 2 2 2 2 2 2 2 2 2 2 2 2 8 1 oT o f c n I ees ( 0 0 3 5 3 2 0 e 0 m 3 7 8 0 0 5 e i 0 1 t T 4 4 4 5 5 0 3 4 4 D 3] 0_wC a 2 2 2 2 2 3 0 D 0 0 0 0 0 0 C

CHRON0 LOGY OF RADIOLOGICAL DATA (continued) ~ Date: Information In formation Time Type Source Location Results and/or Description (see code table) (see code table) (beta-ganma) (mR/hr) (ganna) 0435 1 B GE-8, 875' SW 0.3 0.01 0437 1 B GE-7, 2150' S 2.0 0.5 0441 1 B GE-6, 2250' SSE 0.7 0.2 0450 1 B GE-3,1375' NE 0.6 0.04 0458 1 B GE-9, 650' WSW < 0.01 < 0.01 0500 1 B GE-10, 625' WNW 0.01 < 0.01 0502 1 B GE-1, 1375' N 0.03 < 0.01 0504 1 B GE-2, 1750' NNE 0.01 < 0.01 0615 4 3 Station Vent - HPR-219 30,000 cpm 4 B Control Room Air Intake - HPR-220 200 cpm 4 B Fuel Handling Building Exhaust (upstream of filters) - HPR-221 A 30,000 cpm 4 B Fuel Handling Building Exha'ist (downsteam of fil ters) - HPR-221B 17,000 cpm CO t M

t )am m t ag e y ( no i tp i ) 0 f r r 0 c h 0 0 s / 0 5 l 0 e R 0 0 D m 6 5 s ( ro / dna s ) t a m m m m m m l n p p p p p p u m c c c c c c s a e g 0 0 0 0 0 6 A R 0 0 0 0 0 0 D 1 M 0, 0, 0, 0, 3 a te 0 0 0 0 b 0 5 0 4 ( 4 2 ) a d e 2 B e r 2 2 u e e A e 2 2 n g g o g 7 i r r pl r R R r2 t u u ae u P P i2 n P P vn P gH gH A - 2 E a n n R c g4 g5 a P g6 i - i - gP ( n2 n2 e t. n2 d d nH o i2 lA l B i N i2 i 2 r l A d - d - A a o d - i i d - T l R l R l r lR ut ut l m A iP iP k ot iP Bc Bc i e o D uH uH n on uH u u un o B B a C o B yD yD Bi R L n T C r r L A o r r r r at at r l n C i oH oA p on oB i s i s oe o w I t t t u t o t l u l u tl r o G a ct ct e ci ct ia i a cp t e n O c ac ac k at ac xh xh am n m k L o eu eu a ea eu ux ux ea o o n O L RD RD M R r RD AE AE RS C D U I D A R ) e F l O n b o a Y i e t G t c O ar e L mu d B B B B B B B B B B C O ro o N oS c O f R n e H I e C s ( )e n l o b i a t t ae m pe r y_d 4 4 4 4 4 4 4 4 4 4 5 oT o f c n I ees ( n e wo m

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2 2 g 0 0 n ) 2 1 2 0 i a 1 1 d m m 2 0 0 0 0 0 4 9 6 ae a 1 r 1 g [ 0 0 t n~ ) o~ s l e i~ e h I t v g p e i i ) l h r r c h d s / n 0 e R u 0 D m o 6 ( r r g t o ( a / d r n h a /R s ) m t a m 0 l u r 3 5 5 e 0 5 8 0 s a 4 m e g A R - D 4 0 0 0 0 7 5 3 0 u 2 1 0 ol a M 2 tp t 1 e pn b Ui ( ) deun i t n n i g o d c '0 ( i E E E E l m S W S S W N W B 0 A S W S S S S N N S W 3 T 3 S W W W S ro t A '0 '0 D - n '0 '0 0 0 0 7 5 '0 t a 0 5 5 c w 0 5 L n 1 o 6 7 5 6 6 5 3 7 5 7 a W A o n 4t 1 8 6 1 1 6 1 1 6 8 e S R '0 w 4 e C i I t o l 0 G a n .d 5 8 9 5 5 9 1 2 9 8 r6 i O c k ed e m L o n ti E E E E E E E E E E vt O L U RM G G G G G G G G G G Oa S I D AR )e F l O n b o a Y ie t G tc O ar e L mu d C C B B B B B B B B B B B A O ro o N oS c O f R n e H I e C s ( )e n l o b i a t t ae mp e ry d 7 1 1 1 1 1 1 1 1 i 1 1 2 2 oT o f c n I ees ( n e w m o

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CHRONOLOGY OF RADIOLOGICAL DATA (continued) Date: Information Information Time Type Source Location Results and/or Description (see code table) (see code table) (beta-gamma) (mR/hr) (gamma) 1030 2 A S mi. ESE at 300' 2 mR/hr 1045-1145 2 A \\ mi. radius at 300' 20-30 mR/hr (peak in W quadrant) 2 A 5 mi. radius at 500' 8 mR/hr (peak in W quadrant) 2 A S mi. radius at 500' 1 mR/hr (peak in SSW quadrant) 2 A 1 mi. radius at 500' O.5-1.0 mR/hr (peak in SW to NNE) 2 A 1 mi. radius at 1500' 0.1 - 0.15 2 A 3 mi. radius at 600' O.5 - 1.0 mR/hr (peak in SE) 1058 2 B Over Island at 500' 130 1100 2 B E of Island at 700' 0.8 2 B North Bridge at 700' 0.7 1102 1 B GE-1, 650' WSW 6 4 1110 2 B NW side of Island at 700' 0.7 1117 1 B GE-9, 650' WSW 5 1.5 1 B GE-8, 875' SW 8 3.5 1130 1 B GE-9, 650' WSW 15 5 CX3 1135 2 B SW Quadrant of Plant t at 600' 80-90 mR/hr (ground level 1.3 mR/hr) -^ N

)a f mm ag ( no i tp i ) 5 2 r r 5 5 7 c h s / 2 1 3 0 1 1 1 0 1 1 eR D m ( ro / dna s ) t an l i u n 7 5 s a 5 7 1 eg R 2 8 9 2 5 6 2 4 5 3 4 5 1 1 0 a 1 1 te b ( ) 0 0 d 5 0 e 4 5 '0 '0 un r 0 5 t t i t e 5 1 a a n w o o t t e e c T a a s s u u ( g t t o o A n o o H H T i l l n n A l C o e e g g e e o t t n n e e L n C a a i i r r A o G G k k c c r r S S C i 1 I t 0 h h a a G a 1 1 t t 3 1 t 1 3 3 P P r r O c i r r e e v v L o E E n o E E o E E E O L G G U N G G N G G G N N O O I D A R )e F l O n b o a Y ie t G tc O ar e L mu d B B A A B B A B B B A A A A O ro o N oS c O f R n e H I e C s ( )e n l o a i a t t ae mp e ryd 1 1 1 1 1 1 1 1 1 1 2 2 2 2 oT o f c n I ees ( em e i 8 9 3 4 8 9 0 3 4 9 3 7 0 t T 3 5 0 0 0 0 1 1 1 1 2 2 3 a 1 1 2 2 2 2 2 2 2 2 2 2 2 D 1 1 1 1 1 1 1 1 1 1 1 1 1 4 - - a M &C r A

)a mm ag ( no i tp i ) 8 5 5 5 r r c h r s / h 5 2 5 0 3 0 e R / D m R ( m ro / dna s ) t a m lu n s a 5 5 0 5 e g 7 7 R 0 3 0 0 7 5 8 4 8 1 a 2 5 3 1 0 0 1 1 t 4 5 e b ( '0 '0 '0 ) de 5 5 0 u t 4 4 5 n a t t t i t d a a a n n o a e e g c l s s d ( s u u l I o o B A H H T y r A e n n 0 o D l e e 5 t l e e 4 c L n e r r a A o h c c t e C i S S S a R I t G a r' 9 r r 9 T r 7 8 9 8 7 O c e0 e e D e L o v5 E v v E C v E E E E E O l O5 G O O G M O G G G G G I D A R ) e F l O n b o a Y ie t G t c O ar e L mu d A B A A B A A B B B B B O ro o N oS c O f R n e H I e C s ( ) e n l o b i a t t ae mp e ryd 2 1 2 2 1 2 2 1 1 1 1 1 oT o f c n I ees ( em e i 0 1 2 3 4 6 1 3 5 9 t T 3 3 3 3 3 3 4 4 4 4 a 2 2 2 2 2 2 2 2 2 2 D 1 1 1 1 1 1 1 1 1 1 4

A 7 U n r 7 M o e h 1 i t / o t a r s t p G M o e C i r r t t / ) r h r e h a i e a 5 r n ) C / i 2 c t e w / e s r v o r r c 1, h e s i n f a 1 o o l M h n / e r p C n N / a o r r u r s a o D_ 0 y g r t t M c o e e 0 p y 1 r e n M r s h v l 3 l o v r i 1 i 1 0 o p 7 s e / m o h l 5 d 2 2 0 t m m 3 n o 3 r o a o n g d o b / o o m t 3 h l s r d e a n r a r o t 0 r t f M c a s o i 1 / f n P P a_ y n o e d g r n ( r g k a t u t l r n f U M n l d s d 5 t e r c c a i e i i e 1 k g h 1 e d n u w d d r s 1 k m g 3 r lu n / r a w n r a a e u r n 1 o i e o o e e v o 0 a 3 a y S a r o c R M t D P d 2 F r R o H p 2 r I ( R d e n c t a n n i t o a n o i t U e l ev t t r s ._ o a a i f r u g m b c d t o e o n r a o n v h i a l 0 r a d o k ) f s A '0 0 a l n n r 0 n T 0 e e p e e a 0 s o A n 7 t l d e p 5 u i D o i R c f h n r o t s u o t a c r 0 '0 1_ j i a L t n r l s e 5 r c A a 0 n 2 W o s v 4 a o C g 6 o V 2 N N I 2 o ( V l I e G ~ l O L 0 01 )e l Y b G a O net L oc O i r e B D D B E N t ud O aoo R mS c H r C o e f e n s I ( )e l ba n T o 2 2 2 2 i ee 6 9t pd 7 ayo 9 mT c 1 r o e ,f e 2 n s I ( l ir 0 5 5 p 0 1 4 A 4 6 4 0 0 1 o o o n t t t w e e m o 7 6 0 0 8 n t i 1 4 0 0 4 k a T 3 3 3 6 1 n D 0 0 0 0 1 U , z g

t 5 o y 0 t B e 0 r A h R r I h D o / d M h t d 2 M t r n / e n M u 1 r t e n u f r s o o o n d 3 o ) r d 9 ) e r 8 o a 0 g n 1 n e r g 2 i e t r n 0 u o 1 2 s b e p h o t 3 n / o g J o m c t r m 0 e R t a r s n o a l g R o c P c l r r e d uk M r t i 0 n s a f f b, e sc f a l 0 w e g ea 3 0, o r a d o n rb 1 d 9 y d D_ e b 0 a n e t a t M g g h sy 0 g E 4 o n n y c ul n G s g l y a a n ol m a ( g m d d e r r 1 u i a o r ) n o l o h vi r n i r b s e s 0 s et f s Y i d f a_ r A n y g g ri g 6 a r e D n n d n pr d n n e d o s i r i n i e e i 1 r e t t H M a h d a d mr g d g c j a a or n a d a 3 n a lu e E r e Y e re a e n n 7 a e n C M r B R f( R r a a 1 r r S o A g c r P_ u b s i r r r n e n e r i v o v a e e H s r s s r k t n t s r d n f o n f s 0 n o n a i o i i o n 1 o Y a i o t o o i A n o s a p s i E t n e c e t C a TA n a a a k d o k d a c D o i t y c i l e c i c n o i b t l e s t e s o t l L t m e s h 0 i h l A a u i n c h 2 s c h 1 e C c l r n t t C t I o o a e 5 o t n 5 o R F i G l C M P 1 b a o 1 b N C s O n L O o I D A R F l O e l_ Y b G a O net E A B L oc A A B O re i _ N t ud _ O aoo R mS c H r C o e f e n s I ( ) e l ba n T 0 o 7 1 1 1 1 1 1 ee i 9t pd 7 aye 9 mTc 1 r o e ,f e 2 n s I ( l ir 5 5 3 0 1 p 3 r 1 1 A 3 2 u 0 9 09 M 1 o _7 7 n P 1 on o / o/ w 2 t - t 3 t3 e e m o o t / / n t 3 9 a 5 4 94 t i k 3 t 1 1 a T n M 6 M 1 u 1 n 1 n U A 1 P 2L 0 o 0o D ,) - - s 2 x r_ 7 c __ C

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E' o [hlN g g e s w T n M g y- , j)a ARRIVAL OF NRC PERSONNEL AT THREE MILE ISLAND SITE Vednesday, March 28, 1979 8:45 am Five inspectors, including health physicists with radiation monitoring equipent leave Region I for site -- arrived site 10:05 am 0900 Investigator plus one inspector leave Region I -- arrived site 11:00 am 0900 Region I veriffes that Brookhaven Radiological Assistance Team has been alerted -- 2 teams organized and standing by -- later dispatched arriving Capitol City Airport 2:30 pm, begins sampling 10:00 (approx.) ARM's aircraft requested by NRC - arrived 2:15 pm and begins tracking flights 7:15 pm NRC mobile lab arrives at site -- total Region I personnel on site at this time is 11 Thursday, March 29, 1979 12:00 am (approx.) NRR team, Vollmer plus 7 arrive at site 12:00 am -2:30 pm Additional Region I personnel arrive -- total NRC on site by 3:30 pm is 29 (21 I&E and 8 NRR) Friday, March 30, 1979 2:00 pm Denton plus 12 arrived by helicopter at site Throughout day Additional NRC HQ and Region I personnel. arrive at site As of Friday evening, March 30, 83 NRC personnel are on site and in vicinity (51 I&E, 4 State Programs, 3 Public Affairs, and 25 NRR) I A', of April 9, total NRC personnel at site was 101 I i j 181 150

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