Text

Advises That Radiological Survey of Mesa,Completed on 840208,indicates Max Potential Exposure from Released Matl Substantially Less than Regulatory Limits,Per NRC 840207 & Util s
	ML13310B321
Person / Time
Site:	San Onofre
Issue date:	03/29/1984
From:	Haynes J; Southern California Edison Co
To:	Wenslawski F; NRC/IE, NRC/RGN-V
References
	NUDOCS 8404130244
	Download: ML13310B321 (9)
	v • d • e

Southern California Edison Company SAN ONOFRE NUCLEAR GENERATING STATION P.O. BOX 128 SAN CLEMENTE, CALIFORNIA 92672 J. G. HAYNES TELEPHONE STATION MANAGER (714) 492-7700 March 29, 1984 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention:

Mr. F. A. Wenslawski, Chief Radiological Safety Branch

Dear Sir:

Subject:

Notification of Completion and Final Results of Survey Efforts to Locate Contaminated Material at the Mesa

References:

1) Letter, F. A. Wenslawski (NRC) to C. B. McCarthy (SCE),

dated February 7, 1984, Acknowledgment of Report Received

2) Letter, H. B. Ray (SCE) to.J. B. Martin (NRC), dated January 16, 1984, Response to request for follow-up information Reference 1 acknowledged receipt of our letter (reference 2) which transmitted information regarding our follow-up efforts to locate contaminated material at the Mesa. The letter also requested that SCE forward the final results of survey efforts when they were completed.

The radiological survey of the Mesa was completed on February 8, 1984.

Forty-three (43) additional items with measurable radioactive contamination were identified and transferred to the Unit 1 restricted area after December 31, 1983.

The enclosure is an updated Appendix 1 to reference 2.

We have determined the radiological impact, presented by each of the forty-three items, in the same manner as presented in Appendices 3-6 of the enclosure to reference *2. None of the recently recovered items posed a radiological impact greater than the impact posed by the items in the enclosure to reference 2.

As concluded in reference 2, the maximum potential exposure from the released material was substantially less than any regulatory limits. There was no effect on the health and safety of plant personnel or the public.

8404130244 802 PDR ADOCK 05000206 PDR

'1 ic-

Mr. F.

March 29, 1984 If you require any additional information, please so advise.

Sincerely, Enclosure cc:

Harold B. Ray w/enclosure A. J. D'Angelo (USNRC Resident Inspector, Unit 1)

A. E. Chaffee (USNRC Resident Inspector, Units 1, 2 and 3)

APPENDIX 1 PAGE 1 OF 7 APPENDIX 1

SUMMARY

OF CONTAMINATED ITEMS I

I ACT l\\I TY DETECTED I ACTIVITY WHEN RELEASED I

I I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

I REMOVAB3LE I

I I

DATE I

(cpm)

I (com)

I I

I II. AWS WAREHOUSE I

I I

I These tools and materials were I

I I

I I discovered in the AWS Warehouse I

PERSONNEL LOCKERS:

I I

I I during October 1981.

Since I

I I

I I documentation of radiological I

1. Strapping Tool I 5-1-81 I

300 I

I 390 1

I surveys at that time was less I

2. Wrench (7/16")

1 5-1-81 I

400 I

I 520 1

I rigorous than now, the information I

3.

Wrench (1-15/16")

1 5-1-81 I

500 I

I 650 I

I Is Incomplete In most cases.

A I

4.

Snap Ring Pliers 1 5-1-81 I

200 I

I 260 1

I dash Indicates Incomplete data.

I

5.

Channel Locks I 5-1-81 I 1,400 I

I 1,820 I

I I

6.

Channel Locks I 5-1-81 I

300 I

I 390 1

I 1

7.

Wrench (7/8")

I 5-1-81 I

600 I

I 780 I

I I

8. Wrench (3/4")

I 5-1-81 I

300 I

I 390 I

I

9.

Screwdriver I 5-1-81 I

200 I

I 260 I

I 10. Screwdriver I 5-1-81 I

400 I

I 520 I

I I 11. Crescent Wrench (10")[ 5-1-81 I

I 1,500 I

I 1,950 I Removable contamination was I 12. Crescent Wrench (12")1 5-1-81 I

I 10,000 1

I 13,000 1 evaluated by obtaining a gross I 13. Crescent Wrench (6") 1 5-1-81 I

I 3,000 I

I 3,900 I smear on masslIn and determining I 14. Nylon Slings I 5-1-81 I

200 I

I 260 1

I the count rate with a frisker.

I 15. Scaffold Wrench I 5-1-81 I

I 600 I

I 780 1

I 16. Steel Wedge 1 5-1-81 I

200 I

I 260 I

I 17. Pipe Wrench (14")

I 5-1-81 I

700 I

I 910 I

I 18. Magnetic Base I 5-1-81 I

300 I

I 390 I

I 19. Crescent Wrench I 5-1-81 I 1,500 I

I 1,950 1

I I

I I

I II I

Tool Crib:

I I

I I 20. Special Tool I 5-1-81 1

200 I

I 260 I

I 21. Air Driven Grinder I 5-1-81 I

800 I

I 1,040 1

I 22. Crescent Wrench I 5-1-81 I 5,000 I

I 6,500 I

I 23. Wrench I 5-1-81 I

500 1

I 650 I

I 24. Wrench I 5-1-81 I

500 1

I 650 I

I Items 32 through 36 were placed in I 25. Slug Wrench I 5-1-81 I

I 800 I

I 1,040 1 the Maintenance Shop crypt in I 26. I Bolt I 5-1-81 I 1,000 I

I 1,300 1

I January 1981.

The material I 27. Misc. Parts I 5-1-81 1

500 1

I 650 I

I remained Isolated until the crypt I 28. Grinder Parts I 5-1-81 I

500 1

I 650 I

I was opened for radiological survey I 29. Crescent Wrench (10")I 5-1-81 I 1,500 I

1 1,950 I

I in October 1981.

The items were 1

30. Chicago Fitting I 5-1-81 I 2,000 1

I 2,600 I

I returned to the Restricted Area 1

31. Tin Snips I 5-1-81 I

I 1,200 I

I 1,560 I after survey and were never I

I I

I accessible to a member of theI I

Machine Shop Crypt:

I I

I I general public.

I I

I II I 32. Stud Tension Tester I 1-1-81 I

I I

3,900 I

I Beta corrected measurements of I 33.

RCS Seal Dummy I 1-1-81 I

I I

1,300 1

I 20 mrad/hr at 1/2" and 0.1 mRad/hr I 34. I Beam I 1-1-81 I

I I 650,000 1

I at 12" were reported on item No. 35.

I 35.

Steel O-Ring I 1-1-81 1

I I See Commentl I Dose rates when released are I 36. RCS Seal Dummy I 1-1-81 1

I I

650 I

I calculated to have been 25% higher.

The "Fixed Plus Removable" activities contained in Appendix 1 were recorded in units of counts per minute (cpm).

The typical instrument used to make those measurements was the Eberline RM-14 count rate meter with an HP-260 GM Probe.

Nominal efficiency for these instruments is 10%.

APPENDIX 1 PAGE 2 OF 7i

SUMMARY

OF CONTAMINATrE ITEMS I

I ACTIVITY p

[IcI_

D I ACTivijvLJjjI w

flASm I I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE I

21 I

DATE I

Ic"m)

IlipifI00crim) I (cpqi)

I(doilI0ciIp I I

I I

I I II. MESA GRIP FACILITY I

I I

I

1. Pipe Elbow (1")

1 5-1-81 1 >50,000 (onl LLD I 66,000 1

LLD I Item No. I was found in October I

I one small I

I I

I 1981.

The reported maximum I

I spot)

I I

I I reading was 10 mRad/hr (Beta I

I I

I corrected).

I I

II I

2. Wood Plank I 5-1-81 I

600 I

LLD I

1,000 1

LLD I Item No. 2 was discovered in I

I I

I March 1982.

I

3. Gang Box I 5-1-81 1300(general)l I

400 I

1 I

I 1>50,000 (on I I

I I

lone small I

<1,000 I >50,000 I <1,000 I Item No. 3 was found in July, 1983.0 I

Ispot inside I I

I I No radiation above background on I

I lbox)

I I

I I exterior of box.

I I

I II I

I I

II I

1.

II III

2.

I

1. Forklift Battery 1 5-1-81 I See 1

4,000 I See 1

5,200 1 These items were found in October III Comment I

I Comment I

I and Decemiber, 1981.

Reported'dose I

2. Pre-Filters 1 5-1-81 1

1 3,000 I

I 3,900 I rates, in excess of natural back I

II I

I ground were:

Item No. 1, 25 uR/hr; 1

3. Lead Blankets 1 5-1-81 I

I Item No. 2, 40 uR/hr; and I

(6 Pallets)

I Item No. 3, 2 uR/hr.

Dose rates I

II II when released are estimated to I.I III have been 25% higher.

SI I

I I 5-

- 1 I See I

I I

1. Heliarc Welding Standl 5-1-81 I

200 1

LLD I

340 I

LLD I These items, released a minimum I

2.

Roto Hammer I 5-1-81 I

1,000 1 <1,000 1

1,700 I 1,100 I of 2 to 3 years ago, were surveyed I

3. Cable Choker 1 5-1-81 I

200 I

LLD I

340 I

LLD I in July 1983.

1

4. Core Drill 1 5-1-81 1

200 1

LLD I

340 I

LLD I

I

5. Ta p I 5-1-81 I

100 I

LLD 1

170 1

LLD I

I

6. Wrench I 5-1-81 I

100 I

LLD 1

170 I

LLD I

I

7. Dynameter 1 5-1-81 I

400 1

LLD I

680 I

LLD I

I I

I I Ill. AMERON LAYDOW AREA I

I I

I I II I

I 1.

1.5 Meter Dia. Metal 1 3-1-77 1

800 I

LLD 1

9,100 1

LLD I These items, released from Unit I I

Rings I

I (max.)

I I

I I before 1980, were surveyed inj S2.

Metal Support Rack 1 3-1-77 I

3,000 1

LLD I 34,000 LLD I August and September 1983.

I

3. Steel Shaft (4"x50")

1 3-1-77 I

10,000 I

LLD I 114,000 I

LLD I

I

4. Split Pressure flask I 3-1-77 I

300 I

LLD 1

3,400 1

LLD I

I

5. Cylindrical Metal I 3-1-77 I

3,000 I

LLD 1 34,000 I

LLD I

PcII IP D

B w Le LI I

I I

III IIrondwee:Itm o.1,25uRhr LLI whBelowlLower LimitsofmDetection

APPENDIX 1 PAGE 3 OF 7 A P

_FNI

SUMMARY

OF CONTAMINATED ITEMS I

I I

ACTIVITY DETECTED I ACTIVITY WHEN RELEASED I I

I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE I

21 I

I DATE I

(com)

IidpmfIl00cm)

I (cpm)

I(dom/lOOcm I II I

I I

I 6.-11. Pressure I 3-1-77 I 600 (max.) I LLD I

6,800 I

LLD I

Desurgers (6)

I I

I 12. Pump Case I 3-1-77 I

75 I

LLD I

850 I

LLD I

I 13. 10 cm Shackle I 3-1-77 I

300 I

LLD I

3,1000 I

LLD I

I 14. 7.5 cm Shackle I 3-1-77 I

75 I

LLD I

850 I

LLD I

I 15. Clamp I 3-1-77 I

75 I

LLD I

850 1

LLD I

I 16. Drain Cap I 3-1-77 I

2,000 I

LLD I

23,000 I

LLD I

I 17. Hand Lift I 3-1-77 I

150 I

LLD I

1,700 I

LLD I

I 18.&19. Clamps (2)

I 3-1-77 I 350 (max.) I LLD I

4,000 1

LLD I

I 20. Cruciform Pipe I 3-1-77 I

5,000 I

LLD I

57,000 I

LLD I

I 21. 30 cm. Dia. Handwheel I 3-1-77 I

1,000 I

LLD I

11,400 I

LLD I

I 22. Valve Stem I 3-1-77 I

2,000 I

LLD I

23,000 I

LLD I

I 23. 3-Inch Gate Valve I 3-1-77 I

600 1

LLD I

6,800 I

LLD I

I 24.&25. Shackles (2)

I 3-1-77 I

100 1

LLD I

1,100 1

LLD I

I 26.-28. Aluminium Pipes I 3-1-77 I

2,000 I <1,000 I

23,000 1

5,700 I

I (3) 1 I

I (External) I I (External)I I

I I

I 1,100 1

I 12,500 I

I I

I I (Internal) I I (Internal)l I 29. Lead Blanket I 3-1-77 I

1,000 I

LLD I

11,100 1

LLD I

I 30. Metal Brace I 3-1-77 I

700 I

LLD I

8,000 I

LLD I

I 31. 3" Thick Metal Plate I 3-1-77 I

2,600 I

LLD I

30,000 I

LLD I

I 32.

22-inch Pipe I 3-1-77 I

500 I

LLD I

5,700 I

LLD I

I 33. Tube I 3-1-77 I

1,200 1

LLD I

14,000 I

LLD I

I I

I I IV. EDISON SALVAGE YARD -

I I

I ALHAMBRA I

I I

I NO ITEMS FOUND I

I I

I

I I

I I

I V. DIVISION MAINTENANCE I

I I

FACILITY AT ALAMITOS I

I I

I STATION I

I I

I NO ITEMS FOUND I

I I

IIIIII I

I I

I I These items were surveyed in I VI. BECHTEL WAREHOUSE IN I

I I

I September 1983 I

LA MIRADA I

I I

I I Items 1 through 4 were released I

1. Drill Press I 5-1-81 I

2,000 I

LLD I

5,600 1

LLD I from Mesa Fabrication Shop during I

2. 50', 1/2-inch Dia.

I 5-1-81 I

75 I <1,000 I

210 I

I August 1983 I

Hose I

I I

3. 24', 2-inch Dia.

I 5-1-81 I

1,500 I

LLD I

4,200 I

LLD I Removable contamination on item 3 I

Vacuum Hose I

I (External) I (External) I (External) I (External)I was confined to a 3 inch long I

I I 10,000 I 1,120 I

28,000 1

3,100 1 metal fitting on one end of the I

I (Internal)

I (Internal) I (Internal)I hose.

L -

l I

I I

I LLD-Below Lower Limit of Detection

APPENDIX 1 PAGE 4 Of 7 ALPEINDIXi

SUMMARY

OF CONTAMINATED ITEMS I

I ACTIVITY DETECTED I ACTIVITY WHEN RELEASED I I

I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE I

21 I

I DATE I

icom)

Il(dpm/10Qcm) I (cpm) lidpm/lOcm I I

I I

I 4.

100', 1 inch Dia.

I 5-1-81 I

100 I

<1,000 I

280 I

1,300 1 I

Hose I

I I

I I 5. Air Powered Grinder I 5-1-81 I

4,000 I

LLD I

11,200 1

LLD I Items 5 through 9 were released I 6. 6', 1 Inch Dia. Hose I 5-1-81 I

4,000 I

LLD I

11,200 1

LLD I from Unit 1 a minimum of 2-3 years I

I I (External) I (External) I (External) I (External)l ago.

II I 16,000 I

<1,000 I

4,800 I

1,100 I

I I

I (Internal) I (Internal)

I (Internal) I (Internal)l I 7.

6', 1 inch Dia. Hose I 5-1-81 I

1,000 I

LLD I

2,800 I

LLD I

I 8. Impact Wrench I 5-1-81 I

1,200 I

<1,000 I

3,400 I

<1,000 I

1

9.

Impact Wrench I 5-1-81 145,000 (one I 2,200 I

61,200 1

3,000 I An Isotopic analysis of Item No. 9 I

I

[hot spot)

I (External) I I

I revealed essentially only Cobait-60.

I I

115mR/hr by 135,100

,40 1 20mR/hr I 47,800 1

I ITLD I (Internal) I I

I I 10. Welding Connector I 3-1-77 I

75 I

LLD I

880 I

LLD I Items 10 through 24 released from I 11.-16. Welding Connectorsl 3-1-77 I

100 I

LLD I 1,170 I

LLD I Unit 1 a minimum of 5-6 years ago.

(5)I III I 17. Welding Connector I 3-1-77 I

100 I <1,000 I 1,170 I 2,800 I

I 18. Welding Connector I 3-1-77 I

800 I

LLD I 9,400 I

LLD I

I 19. Welding Connector I 3-1-77 I

800 I <1,000 1 9,400 I 3,500 I

I 20. Welding Connector I 3-1-77 I

800 I 1,500 I 9,400 I 17,500 I

I 21. Welding Connector I 3-1-77 I

2,000 I <1,000 I 23,400 I 3,300 I

I 22. Welding Connector I 3-1-77 I

2,200 I <1,000 I 25,800 I 10,700 I

I 23. Gate Valve I 3-1-77 I

700 I <1,000 I 8,200 I

LLD I

I I

I (External) I (Internal I (External) I (External)l II I

800 1

arid I 9,400 1

7,500 I

I I

I (Internal) I External) I (Internal) I (Internal)l I 24. Gate Valve I 3-1-77 I

1,000 I

LLD I 11,700 I

LLD I

I I

I (External) I (External) I (External) I (External)l I

I 6,000 I <1,000 I 70,000 I

7,400 I

I I (Internal) I (Internal) I (Internal) I (Internal)l I

I I

III I

I I

IIII I VII. MESA FENCED AREA I

I I

WEST OF AMERON I

I I

I 1.-2. Head Set I 5-1-81 I

1,800 1 <1,000 I 5,400 I <3,000 I The material found, November '83, I

3.

Ratchet Wrench I 5-1-81 1

90 I <1,000 I

270 1

<3,000 I In this area had been received from I

4.

Staple Gun I 5-1-81 I

100 1 <1,000 I

300 I <3,000 I thu GRIP Facility before the I 0

I

5.

Ratchet Head I 5-1-81 I

100 I <1,000 1

300 I <3,000 1 Hadwaste Group established control I

6.

Slug Wrench I 5-1-81 I

90 I <1,000 I

270 I <3,000 I over the movement of materials I

7.

Air Powered Nail Gun I 5-1-81 1

75 I <1,000 I

225 I <3,000 I between areas at the Mesa.

I

8.

C Clamp 1 5-1-81 1

240 I <1,000 I

720 I <3,000 I

I

9.

Pipe Stand I 5-1-81 1

270 I <1,000 I

800 I <3,000 I

I 10. Pipe Stand I 5-1-81 I

390 1 <1,000 I 1,170 I <3,000 I

D BI I

I I

II I

I I

II I

I II I

II LLD -

Below Lower Limit of Detection

APPENDIX 1 PAGE 5 OF 7

SUMMARY

OF CONTAMINATED ITEMS I

I ACTIVITY DETECTED I ACTIVITY WHEN RELEASED I I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE I

21 I

DATE I

(com )

I(dpm/100cm)

I (cpm)

I(dop/100cm I I

I I

I 11. C Clamp I 5-1-81 I

300 I

<1,000 1

900 I

<3,000 I I 12. Pipe Stand I 5-1-81 I

125 I

<1,000 I

375 I

<3,000 I I 13. Strap I 5-1-81 1

200 1

<1,000 I

600 I

<3,000 I I 14. Vise Grips I 5-1-81 I

3,000 I

1,650 1

9,000 I

5,000 I I 15. Vise Grips I 5-1-81 I

90 I

<1,000 I

270 I

<3,000 I I 16. Vise Grips 1 5-1-81 I

6,500 1

5,800 I 19,500 I

17,400 I I 17. Vise Grips I 5-1-81 I

3,200 I

3,880 I

9,600 I

11,600 I I 18. Vise Grips I 5-1-81 I

75 I

<1,000 I

225 I

<3,000 I I 19. and 20. Fitting I 5-1-81 I

125 I

<1,000 I

375 I

<3,000 I I 21. Fitting I 5-1-81 1

150 1

<1,000 I

450 I

<3,000 I Thu vicegrips, Item 16, were I 22. and 23. Fitting I 5-1-81 I

100 I

<1,000 I

300 I

<3,000 I modified for remote operation.

I 24. Fitting I 5-1-81 1

1,590 I

<1,000 I

4,800 I

<3,000 I Use as a standard hand tool was I 25. Fitting I 5-1-81 I

1,000 I

1,190 I

3,000 I

3,600 I not possible.

I 26. Valve I 5-1-81 I

1,000 1

<1,000 I

3,000 1

<3,000 I I 27. Box I 5-1-81 I

200 I

1,070 I

600 1

3,200 I I 28. Vacuum Tool I 5-1-81 1

250 I

<1,000 I

750 I

<3,000 I I 29. Regulator I 5-1-81 I

100 I

<1,000 1

300 I

<3,000 I I 30. Socket Drive I 5-1-81 1

250 I

<1,000 I

750 I

<3,000 I I 31. Winch I 5-1-81 1

200 I

<1,000 I

600 I

<3,000 I I 32. Bucket I 5-1-81 I

75 I

<1,000 1

225 I

<3,000 I I 33.

T. V. Camera I 5-1-81 I

300 1

<1,000 I

900 I

<3,000 I I 34. Head Set I 5-1-81 1

200 I

<1,000 1

600 I

<3,000 I I 35. Head Set I 5-1-81 I

250 I

<1,000 I

750 I

<3,000 1 I 36. Metal Disk I 5-1-81 I

400 I

<1,000 I

1,200 I

<3,000 I I 37. Allen Wrench I 5-1-81 I

250 I

<1,000 I

750 I

<3,000 I I 38. Pipe Bender I 5-1-81 I

500 I

<1,000 I

1,500 1

<3,000 I I 39. Pump and Valves I 5-1-81 I

100 I

<1,000 I

300 I

<3,000 I I 40. Socket Breaker Bar I 5-1-81 1

100 I

<1,000 I

300 I

<3,000 I I 41. Pipe I 5-1-81 I

300 I

<1,000 1 900 I

<3,000 I I 42. Gas Bottle I 5-1-81 1

400 1

<1,000 I

1,200 I

<3,000 I I 43. Scaffolding Knuckle 1 5-1-81 I

2,500 I

<1,000 I

7,500 1

<3,000 I I 44. Scaffolding Knuckle I 5-1-81 I 18,000 I

4,200 I 54,000 I

12,600 I I 45. Casters I 5-1-81 I

1,000 I

<1,000 I

3,000 1

<3,000 I I 46. Barrel 1 5-1-81 I

200 1

<1,000 I

600 I

<3,000 I I 47. Glove I 5-1-81 I

200 I

LLD I

600 I

LLD I I

I I

I II IVIII. Mesa Training CeDAM III 1

1 I

I I

I I This Item, found in December 1983, I

1. Survey Instrument I 5-27-82 1

20,000 I

LLD I 25,000 I

LLO I was released from the Unit 1 I

I I

I Restricted Area in May, 1982.I It I

I I

I was then transferred from the I

I I

I Protected Area in May, 1983, to I

I I

I the Training Center for use as a I

I I

I training aid.

I I

I I IX. San Diego State I

I I

University I

I I

No items found I

I LLD -Below lower limit of detection

APIILNUIX I PAGE 6 OF 7 APPENDIX 1

SUMMARY

OF CONTAMINATED ITEMS I

I I

ACTIVjY DETECTED I ACTIV[ITY WHEN RELEASED I

I I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE I

21 I

I DATE I

(com)

I(dpm/1Q0cm) I (com) li(dpm/lQcm)I I

I I

I X. Trans America/

I I

I Deleval Corporation I

I I

I These Items were inadvertently I

Connecticut I

I I

I shipped to the manufacturer for I

I I

I I ropair.

Tho combined fixed plus I

1.-3.

Three level I 5-2-82 I

300 I 1150 (max.)l 350.

I 1,300 I removable activity (primarily; I

detectors.

I I

I I Co-60 and Cs-137) was estimated I

I I

I at 0.1 uCi.

The items were I

I I

I surveyed and decontaminated by I

I I

I a licensed contractor before I

I I

I repairs were made.

I I

I I

I II I

I I

I XI. MESA 2/3 LAYDOWN I

I I

I Items 1-39 were surveyed in I

AREA I

I I

I November and December 1983.

I I

I 1.

Tube Lock I 3-1-77 I

1,000 I

<1,000 1

12,000 I

<12,000 I Item 1 was removed from Unit I 1, 2.-7. Scaffold Knuckle I 5-1-81 I

100 1

<1,000 1 300 I

<3,000 I before 1980.

I 8.-9. Scaffold Knuckle I 5-1-81 I

200 I

<1,000 I

600 I

<3,000 I I 10.-11. Scaffold Knuckle I 5-1-81 I

400 I

<1,000 I

1,200 I

<3.000 1 I 12.-15. Scaffold Knuckle 1 5-1-81 1

150 1

<1.000 I

450 I

<3,000 I I 16.-26. Scaffold Knuckle I 5-1-81 I

75 1

<1.000 I

225 I

<3,000 I I 27. Scaffold Knuckle I 5-1-81 1

350 I

<1,000 I

1,050 I

<3,000 1 I 28. Scaffold Knuckle I 5-1-81 I

80 I

<1,000 I

240 I

<3,000 I I 29. Scaffold Knuckle I 5-1-81 1

500 1

<1,000 I

1,500 1

<3.000 I I 30. Scaffold Knuckle I 5-1-81 I

250 I

<1.000 I

750 I

<3,000 I I 31. Scaffold Knuckle 1 5-1-81 I

160 I

<1.000 I

480 I

<3,000 I I 32. Scaffold Knuckle I 5-1-81 1

10,000 I

<1.000 I 30,000 I

<3,000 I I 33.

Scaffold Knuckle I 5-1-81 I

350 1

<1.000 I 10,500 I

<3,000 I I 34. Engineers Box I 5-1-81 I

200 I

<1,000 I

600 1

<3,000 I I 35. Tape I 5-1-81 1

300 I

<1,000 1

900 1

<3,000 I I 36. Tile I 5-1-81 1

600 I

<1,000 I

1,800 I

<3.000 I I 37. Box Wrench I 5-1-81 I

80 1

<1.000 I

240 I

<3,000 I I 38. Brass Fittings I 5-1-81 I

800 I

<1.000 I

2,400 I

<3,000 I I 39. Hydrolazer I 5-1-81 I

2,000 1

3,700 I

6,000 1

11,000 I I - - - - -

I-- -

II I

I I

I 40. Wrench (1 13/16")

1 5-1-81 I

650 I

<1,000 1

1,950 I

<3,000 I All remaining items were discovered 1 41. Wrench (1 3/8")

1 5-1-81 I

300 I

<1,000 I

900 I

<3,000 1 after December 31, 1983.

I 42. Wrench (1")

1 5-1-81 I

400 I

<1,000 I

1,200 I

<3,000 I I 43. Pump Unit I 5-1-81 I

500 I

<1,000 I

1,500 I

<3.000 I I 44. Tripod I 5-1-81 I

160 1

<1.000 I

480 I

<3,000 I I 45. Ratchet Wrench I 5-1-81 I

350 I

<1.000 I

1,050 I

<3,000 I I 46. Hand Press I 5-1-81 I

200 I

<1,000 I

600 I

<3,000 I I 47. Steel Rule I 5-1-81 I

4,000 I

<1,000 I

12,000 I

<3,000 I I 48. C-Clamp (8")

1 5-1-81 I

300 I

<1,000 I

900 1

<3.000 I I 49. C-Clamp (11')

1 5-1-81 I

120 I

<1.000 1

360 1

<3,000 1 I 50. C-Clamp (6")

I 5-1-81 I

210 I

<1.000 I

630 1

<3,000 I I 51. Pipe Die I 5-1-81 I

200 1

<1.000 I

600 I

<3,000 I I 52. Pipe Bender I 5-1-81 I

900 I

<1.000 1

2,700 1

<3,000 I I 53.

Breaker Bar (18")

I 5-1-81 I

2,200 I

<1,000 I

6,600 o

i

<3,000 I I 54. Pipe Threader I 5-1-81 I

1,000 I

<1,000 1

3,000 I

<3,000 I I 55. Tripod I 5-1-81 I

300 I

<1,000 I

900 I

<3,000 I I 56. Gas Regulator I 5-1-81 I

500 I

<1,000 I

1,500 I

<3,000 I I 57. Grinder Catch Pot I 5-1-81 I

200 I

1,500 I

600 I

4,500 I I 58. Pipe Vise I 5-1-81 I

120 1

<1,000 I

360 I

11,000 I I 59.

Shaft I 5-1-81 I

90 I

<1,000 I

180 I

11,000 I

APPINI)IX 1 PAGE 7 OF 7 APPENDIX 1

SUMMARY

OF CONTAMINATED ITEMS I I I

ACTIVITY DETECTED I ACTIVITY WHEN RELEASED I I

I ESTIMATED I FIXED PLUS I REMOVABLE I FIXED PLUS I REMOVABLE I COMMENTS I LOCATION/ITEM DESCRIPTION I RELEASE I REMOVABLE I

21 REMOVABLE 1 21 I

I DATE I

(com)

I(dpm/1OOcm) I (cpm) i(dom/1Q0cml!

I I

I I 60. Pipe Vise I 5-1-81 I

350 I

<1,000 I

1,050 I

<3,000 I I 61. Wood (2" x 4" x 18")

I 5-1-81 1

300 I

<1,000 I

900 I

<3,000 I I 62. Tool Box I 5-1-81 1 (Internal) I

<1,000 1

30,000 I

<3,000 I External radiation at contact I

I I 10,000 I

I I

I < 0.1 mR/hr when found.

I I

I (External) I

<1,000 I

600 I

<3,000 I I

I I

200 I

I I

I I 63. Grinder Wheel I 5-1-81 I

140 I

<1,000 1 420 I

<3,000 I I 64. Bucket Lid I 5-1-81 I

200 i

1,500 I

600 I

4,500 I I 65. Table 1 5-1-81 I

200 I

<1,000 I

600 I

11,000 I I 66. Resistor I 5-1-81 I

150 I

<1,000 I

450 I

11,000 I I 67. Resistor I 5-1-81 I

120 I

<1,000 I

360 I

11,000 I I

I I

I IIIIII I Ameron. Lot 12 I

I I

I II I

I I

II I

1. Eye Bolt I 5-1-81 1

14,000 I

<1,000 I 42,000 I

<3,000 I Items 1, 2 and 3 contaminated I 2. Eye Bolt I 5-1-81 I

500 I

<1,000 I

1,500 I

<3,000 I on threads.

I 3.

Eye Bolt I 5-1-81 I 10,000 I

<1,000 I 30,000 I

<3,000 I Potential whole body and skin doses I 4. Air Conditioner I 5-1-81 I

1,200 1

<1,000 1

3,600 I

<3,000 I posed by item I are bounded by' I

I I

I I the evaluations contained in i

I Warehouse B I

I I

I Appendices 3 and 4.

I I

I

1.

Fan 1 5-1-81 I

1,500 I

<1,000 I

4,500 1

<3,000 1 I

I I

I I Paint/Sandblast Yard I

I I

I II II I

I I

1. Nylon Sling (8')

I 5-1-81 1

200 I

<1,000 I

600 I

<3,000 I I 2. Gate Valve I 5-1-81 I

180 I

<1,000 I

540 I

<3,000 I I 3.

Gate Valve (1")

1 5-1-81 I

600 I

<1,000 I

1,800 I

<3,000 1 I

I I

I Edison Warehouse I

I I

I (Internal)

I I

1. Tripod Jack I 5-1-81 I

1,800 I

3,000 1

5,400 I

9,000 I The contamination on Item 3 flaked I

I I

I (External) I I

I off, leaving the tool clean.

I I

<1,000 1 I

<3,000 I Appendices 5 and 6 bound the 1

2.

Pipe Bender I 5-1-81 I

4,000 I

<1,000 I 12,000 I

<3,000 I potential dose from either inhaling I 3. Hilti Roto Hammer I 5-1-81 I

1,500 I

15,000 1 4,500 I

45,000 I or ingesting the entire amountiof I 4. Electrical Plug I 5-1-81 I

6,000 I

<1,000 1 18,000 I

<3,000 I contamination.

I 5.

Fire Extinguisher I 5-1-81 I

1,400 I

<1,000 I

4,200 1

<3,000 I Contamination on item 5 was 1 6.

Fire Extinguisher I 5-1-81 I

200 I

<1,000 1 600 I

<3,000 I confined to base of the cylinder.

I

7. Welding Box I 5-1-81 I

300 I

<1,000 I

900 I

<3,000 I 2I I

I I

II I

I I

II I

I I

II II I

I I

I l

I

.0929K

ML13310B321

Contents

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SUMMARY

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ML13310B321

Text

Dear Sir:

Subject:

References:

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

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