ML20069K872

Public Version of Revision 6 to Emergency Plan Implementing Procedure HNP-8006, Decontamination

ML20069K872
Person / Time
Site:	Hatch
Issue date:	10/25/1982
From:	Rogers W GEORGIA POWER CO.
To:
Shared Package
ML20069K847	List: ML20069K860 ML20069K872
References
HNP-8006-01, HNP-8006-1, NUDOCS 8211160115
Download: ML20069K872 (13)

Text

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. GEORGIA 3 POWER COMPANY .

4 HATCH NUCLEAR PLANT '

, 4 ./

PROCEDURE '

~ ~~~~ ~~ Deconiismination '

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_ _ - HNP-8.006 .

PROCEDURE NUMBER -

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RESPONSIBLE SECTION

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SAFETY RELATED (J,X ) NON-SAFETY RELATED (' )

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( A' PROVED APPROVED

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REV. DESCRIPTION DEPT.. ~

PLANT . DAiE HEAD MANAGER

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REASON FOR RECtEST o .W,. '

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See Title Page 1 of 10 DECONTAMINATION A. PURPOSE .

To establish a basic technique for decontamination of equipment, floors, and personnel that may become contaminated during operation of a nuclear Facility.

D. REFERENCE Dbserve Radiation Protection Procedures.

C. SAFETY l Radiological Health Handbook.

D. GENERAL ,

During operation of a nuclear facility,-equipment, floors, and

- personnel become contaminated. Decontamination should be done prior to maintenance work or release from a Radiation Cor. trol

. Area. Decontamination may be done at the work location or it way be brought into a decontamination room or area as necessary.

E. EGUIPMENT DECONTAMINATION

1. Equipment decontamination at work location:

a. Place plastic sheeting under the equipment to be decontaminated. This sheeting should be extended enough in each direction to assure that floors are not contaminated.

b. Soak some absorbent cloth with water and squeeze out excess water. (It may also be desirable t'o wet absorbent cloth with a detergent such as Alconox.)

c. Using an individual cloth rub an area approximately 6" X G" and then place the used cloth in a plasti c bag-

. t!OIE

. Soaking wet rags should not be placed.into a radwaste i container. Contact a Health Physics Foreman for proper disposal methods of wet articles.

Always work from the Icast contaminated areas toward i

the most contaminated areas to minimize spreactng.

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d. Ilsing a. dry cloth, wipe up the detergent - water

, residue, and place the cloth in a radwaste container.

e. . Repeat E.1.c and E.1.d in a new area. (Intermittent surveys with an appropriate radiation detecting instrument will show which area the decontamination must be repeated.)

i

2. Equipment decontamination in decontamination areas:

Equipment which is difficult to decontaminate at work location is wrapped or sealed in plastic and carried to the deconiamination room or area for clean-up. See Radiological Health Handbook or Figures 2 through 2d for other decon methods.

F. FLOORfNO AREA DECONTAMINATION ,

NOTE

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See FNP-8005 section E.2.b for floor decontemination limits.

e The techniques used for the decontamination of floors or areas vary with the level and ex-t ent of contamination. For high-Irivel or spotty contamination, the technique described in E.1 above is used to avoid spread of the contamination. For low-level contamination of large areas, a scrubbing machino or mop are used with water and detergent. Masslin cloth used with a sweeping r,1 may also be used for decontaminating large areas. The types of material used for decontamination will vary with the activity and area, therefore Health Physics personnel will determine the materials to be used prior to decontamination.

NOTE When using vacuum cleaner for contamination removal, axercise extreme care when removing the filter from the cleaner fer disposal. . Follow procedure as in Figure 1 to minimize a.rborne activity.

.. REFERENCE GEY ,

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' 4 Gee Ti-t le Pcure 3 of 10 G. PERSCtJgq_,DisCONTAMINATIOU NOTE

. See HNP-8005 section E.2.e for personnel contamination limits. -

1. Decontamination shower (s) are supplied for decontami' notion of personnal. Superficial hand contamination can be washed of f by .the person involved af ter notifying H.P. After washing, the hands and arms must be monitored carefully to assure that the contamination is removed. If the contamination involves parts of the body other than the hands or if the hand contamination cannot be removed by simply soap and water washing, Health Physics personnel must be notified.

2. The following procedure is used for the cleanup of. skin contsmination.

a. If the contamination is spotty, the spots are cleaned up using cotton swabs dipped in a thic!r. mixture of detergent. This mixture is removed using clean cotton

, swabs,

b. If the contamination is general, the sl<in area mus+ be warned with soap and water. (If the contamination is wiouspread the cecontamination shower may be used.)

c. After washing, the' s!<in area is surveyed with an E-1"0 or RM-14 count-rate motor. If detectable contaminat.on is found, the area must be rewashed,

d. After two washings, if the contamination is still present, the skin area should be scrubbed with a brush using a thick solution of detergent, such as Tide).

Use light pressure with heavy lather. (Do not scratch or erode the skin.)

NOTE Only if steps G.1 through G.2.d are unsuccessful are steps G.2.e and G.2.f to be attemped.-

e. After repeated scrubbing, if the contamination is stil) present, a thick paste of titanium dioxide and water is applied to the area and kept uoist. After the paste has stayed on the skin for approximately two minutes,-

it is removed and the skin area washed with soap ano water.

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f. If the titanium dioxide paste does not remove the ccntamination, . the sl<in area is painted with a 4 percent solution of potassium permangant.te. The area is painted three times, allowing each application to dry. The skin discoloration is removed with a 4 percent solution of sodium bisulfite.

g. Decontamination around eyes, in nasal passages or other body obificies, is'done under the supervisian of the Health Physics staff.

i' NOTE Serious-cuts or wounds should not be decontaminated unless done so by a Doctor.

s .

Whenever it is suspected that personnel could have ingested radioactive contamination,.a scan for' internal l

• contamination should be performed using a whole body counter as soon as possible.

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h. Anytime personnel decontamination is performed, the-t Health Physics staff must be notified. The Health a Physics Supervisor or his designated alternate will determine the necessity for documenting the 1

decontamination of Form 1.of HNP-8009.

3. During an emergency situation, personnel decontamination may be required at a location which is not equipped to handle liquid radwaste. In these instances a decontamination hit must be used, and the decontamination effort done without the'use of water. . Prior to-initiating-any decontamination-activity, . plastic or similiar material should be placed on-the ground for the effected person to stand on. Radcon should then be sprayed onto a towel which i s used to clean.

the contaminated area (s). Contaminated towels thould be stored in a yellow bag when decontamination is cornplete. If this method is unsuccessful, or if the contamination-is widespread, the individual should don-a disposable covernll and relocate io the nearest facility which is equipred to i handle liquid radwaste. These facilities are mart <e :

accordingly. e.g. " Emergency De contamina tion Ghower . " .

Aside from the existing facilities in the plant, these 1 shoi"ers will be located in the welding training building and the Environmental building. The procedures described in-

Section G.1 and G.2 should be followed at these f a c i l i t i e .> .

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S of 10 FICURE 1 VACUtJM CLEANFR FILTCP GFMOVAL TECHtq0t_q

1. Placir poly bag liner over top of cleaner as in sketch

. below. Tape io cleaner. -

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y Poly bag liner h

l Tape bag liner opening to vacuum cleaner to seal' q j opening completely -

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2. Invert cleaner and liner to remove filter.

3. With niost of debris in bot tom of liner, tape liner shut as

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Cut here Tape Shut here

4. Carefully cut tape and liner. s

5. Carefully remove remaining half or liner from cleantr and tape open end of poly bag liner shut.

G. Place all' material in proper container for radioactive wat.tc.

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F.I.CI.tRE 2 PFRC. O_ NNFl . ITCONTAM I.N_A.T.I.ON f.......................................................................................................................

, . Method

• Surface Action Technique Advantages Disadvanta

.............ges.....

Soap and water Skin and hands Emulnifies and Wash 2 3 minutes Read!!y available Continued washing i dissolves contae. and monitor. Do and effective for will defat the

! inste. not wash more most radioactive skin. Irdiser! -

than 3-4 times contamination. inate wsshing of a other than af.

fecteu parts may spread contami.

nation.

Ssep End water Hair Sames as above Wash several 1

i times. If con.

tamination is not lowered to accept.

able levels, shave the head and apply skin decontaminat.

lon r.ethods.

Lave soap, soft Skin and hands Emulsifies, dis- Use light pres. Same as above Continued w' ashing brush, and water solves, and sure with heavy will abrade'the

• erodes. lather. Wash for skin.

2 minutes,*3 times. Rinse and

' monitor. use care not to scratch or erode the skin. Apply 1anolin or hand cream to prevent chapping Tids or other Same as above Same as above Mase into a paste. Slightly more Will delat and 1

ditergent (plain) Use with addition. effective than abrade skin and al water with a washing with must be ased wit!

wild scrubbing soap. care action. Use care not to erode the skin.

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• Bigin with the first listed method and then proceed step by step to the more severe methods, as necessary.

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See Title Page 7 of 10 EIGURE 2a P_EPS_ONNEL 2 DECONTAMINATTON - CONTINUED

• Hothod' Surface f Action Technique

• Advantages Disadvantages ilsture of 501 Skin and hands F.mulsifies, dia. Make into a pacte. Sligntly more ef- Will defat and Tida cnd 50% corn. solves, and U.c with addi. fective than a5rade skin and psal erodes. tional water with washing with soap. must be used with a mild scrubbing care.

8 action. Use care not to erode the skin.

5% water colution Game as above. Same as above. Une with water. Same as above. Same as above.

3f a mixture of Hub for a minute 301 Tide, 65% Cal. and rinse.

ann, St Carbose icarboxymethyl

stlulosel k preparation of Same as above. Same as above. Use with addi. Same as above. Same as above.

Bt Carbose, 31 tional water.

Tide, In Versene, Rub for 1 minute and 881 water and wipe off.

homoginized into a Follow with lano.

c r ea.m . lin or hand cream. .

, Titanium dioxide Skin, hands, and Same as above. Work the paste Removes contami. If left on too pa.ite. Prepare extremities. Do into the affected nation lodged long will remove

.ct by mixing nor use near face area for 2 min- under scaly sur- skin.

94ccipitated tita- or other body utes. Rinse and face of skin.

4 tum diazide (a openings. wash with soap Good for heavy may thick slurry, and warm water. surface contami.

ever permitted to Monitor. nation of skin.

s yl with a small

a. mount of lanotin.

It r.ot successful, 13 on to next step.

• Degin with the first'11sted method and then proceed step by step to the more severe methods, as necessary.

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'Hethod* ...............-.............____ ... ........__........... . . . . . . . . . . . . . . . _ _ .

...................J.... Surface Skin, hands, and Diricolves contami- Pour over wet Superior for skin Will remove a J4La c<gual volumes hands, rubbing the contamination. layer of skin if

'of a satJrated So* estremities. Do nant absorbed in surface and using May be used in in contact with Jution of potas- not use near face the epidermis.

the skin for more

,sium permanganate or other body hand brush for not conjunciton with I more than 2 min- titanium oxide. than 2 minutes.

amd 0.2 N sulfuric openings.

utes. Rinse with acid. (Saturated water.

solution of EMnC4 is G.4 grams per .

100 ml of H 20.)

, Continue with next

,s te p.

b- Apply in same man- Same as above.

Apply a freshly Same as above. Removes the per.

prepared 51 solu- manganate stain. ner as above. Ap-ply for not more

,tton of coalum than 2 minutes.

scid sulfite. The above proce-

'fSolution made by

' dis.alving 5 gm of dure may be re-NaHS03 crystals peated. Apply jn 100 ml distilled tanolin or hand w cream when com-pleted.

]ater.) Physical removal Roll back the eye. If used immedi. When using for Flushing Eyes, cars, nose, nose and routh, and. mouth by flushing. lid as far as pos.. ately will remove n

sible, flush with contamination. c7ntamination in-i large amounts of May also be used dividual should

',' water. It iso. for ears, nose, be warned not to tonic treigants and throat. shallow the are availabis, ob. rinses.

tain thm.1 without delay. Apply to eye continually and then flush with large amounts of water.

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• Brgin with the first listed method and then proceed step by step to the more severe methods, as necessary O

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PERSONNFL DFCONTAMINATION CGNTIN11CD MethoJ' Surface Action Technique Advantages Disadvantages

................... ....................L ...................... . . . . . . . . . . . . . . . . . . . .................... .................

T1ushing (cont'd) 11notonic teri-gant (0.9% Nacl colution): 9 I grams Nacl in leaker, fill ot 1000 cc with water.) Can be purchased from drug suppliers, etc.

Further decontami.

natinn should be donc under medical j nupervision.

> Flushing Wounds Physical removal Wash wound with Quick and effi- May spread cont.

by flushing. large amounts of cient if wound . Ination to other water and spread not severe, areas of tody if.

edges to stimulate not done care-bleeding, if not fully.

profuse. If pro-fuse, stop bleed-ing first, clean edges of wound.-

bandage, and if any contamination

{t remains. It may be removed by normal' cleaning methods, as above.

Sweating Skin of hands and Physical removal Place hand or foot Cleansing action If glove or booty feet by sweating. in plastic glove is from inside is not remoecd or booty. Tape out. Hand does shortly af t e pro-shut. Place near not dry out fuse sweating source of heat for starts a d part I ~15 "'"" ' "*'"** "'*" ' ""

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• Degin with the (trat listed method and then proceed prep by step to the more severe methods, as necessary.

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FIGURE 2d.

PERSONNEL.. CI~CONTAMINATIGN'- CONTINUCD

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Msthod' Surface Action ' Technique Advantages. Disadvantages 5 wasting (Cont'd) until hand or' foot and water im::edi- ,

is sweating pro- ately,.contani-fusely. Demove nation may soep qiove and then into the pores.

wash using stand.

ared techniques.

Or gloves can be worn for several hours using only'_

body heat.

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AREA AND MATERIAL DECONTAMINATION f Msthod* Surface f.ction

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Technique Advantages

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Disadvantages-l tcuua cleaning Dry surfaces Removes contami. Use conventional Good on dry, por. i All dust must be 8 natti dust by suc- vacuu:n technique ous surfaces. filtered out of tion. with efficient fliter.

Avoids watet reacations.

exhaust. Machine is conta:tinated, j

. . i dater All* nonporous sur. Dissolves'and For laroe surface All water equip- Drainage r.ust be!

face (metal, erodes. Hose with high- ment may be uti- controlled. Not painted, plastic, pressure water at 11:ed. Allows scitable for po-

. etc.) an optimum dis. operation to be rous materials.

!! tance of 15 to 20- carried out from oiled surfaces feet. Spray ver- a distance. Con- cannot be decon-tical surfaces at tamination may be ta91nated. Not an angle of inci- reduced by 50%. applicable on dry,.

dence of 300 to Water equipment contaminated curi 400s work from may be used for faces-(use vacy.

top to bottom to colutions of other um): not appli-avoid recontamina- decontaminating. cable on porour tion. Work upwind agents. surfaces suca as to avoid spray. wood, concre:e.

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e Brgin with the first listed methdd and then proceed step by step to the more severe methods, as necessary.

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