ML20041D123
| ML20041D123 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 02/13/1982 |
| From: | GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20041D101 | List: |
| References | |
| HNP-4830-01, HNP-4830-1, NUDOCS 8203040310 | |
| Download: ML20041D123 (5) | |
Text
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- j GEORGIA PCWER CGb1PANY HATCH N'JCLEAR PL ANT
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PRnCFO!II?E Charcoal and Particulate Sampling
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O_f _G_a e.c o.o n PROCEDURE TITLE H N 9
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PROCECURE NUMOER e
Lab RESPONSIPLE SECTION SAFETY RELATED ( X )
NON-SAFETY RELATED (
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APPROVED APPROVED REV.
DESCRIPTION DEFT.
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.x CHARCOAL AND PARTTCUtATF P..PLTNG CF GASFDUS_ EFFt.t4 NTG UNOPR Er'ERGFt CY CONDTTIONS j
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A.
EUEBOEE To provide a detailed procedure for sampling gaseous effluent for Iodine and Particulater, during a Site or General Emergency.
B.
S_P_ECIAL FCUIPMFNT 1.
Sample shields previously placed at sample points.
2.
Special lowering device to lower samples'from top of Reactor Bldg. and from the stack sample station.
3.
Hoods in lab with shielding which to unl~oad sample behind.
4.
Special counting shield for charcoal and particulate.
5.
Cart or truck to bring sample from Stack to Lab.
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High range' dosimeter, TLD's, Finger Rings, Pc's, Polybags, and air packs for H.P.
purposes.
7.
Remote tools to open sample holders.
C.
PRECAUTTONS 1.
Due to the high dose rates and contamination levels which are to be expected with this kind of an accident, dry runs of sampling techniques should be performed before doing actual sampling.
' 2.
Laboratory supervision shall be consulted on all activities associated with r,ampling and counting any material obtainer' for post-accident analysis.
3.
All attempts to get r.amples will be followad with the most restrictive H.P.
practices.
Constant H.P. monitoring will l
be provided and adhore<J to.
A minimum of two persons will be required while getting the sample.
4.
These samplo points are high and hard to get locations.
De aware of the danger of falling.
e (b) 5.
Be aware of time it would take to retreat and which is the best and faste.,t way down.
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SAMPlINC_REACTnP CUILOTNG vet] S 1.
Load a space charcoal and particulate holder with a Cesco Charcoal Cartridge and a 5 micron millipore filter.
If available substitute a Silver Zeolite Cartridge for the charcoal.
Obtain a plastic bag 1.rge en'ough to hold holder.
2.
Notify Health Physics you are ready and you need a person to survey for you.
Put on the protective clothing required for the R.W.P.
3.
One technician proceeds to Unit I Reactor Building by using Reactor Building elevator or stairs and ladders from the Turbine Bldg. roof, taking radiation surveys as you go. If dose rate is above SR/hr retreat.
The second technician goes to the area where the sample is to be lowered with cart and swaits the lowering of the sample.
4.
'One technician proceeds to the appropriate Unit I or Unit II vent.
5.
Assure that the previously placed shielded sample carrier p
d, and apparatus to lower sample is available.
Place plastic bag into shield.
6.
Survey current sample line and holder.
Assume 1 minute to remove holder and replace holder.
If dose will be above 1 1/4 Rem to whole body at 7 1/2 Rem to extremities do not remove holder.
7.
Very quickly and with constant monitoring, disconnect tha present sample holder and place in shield.
Connect spare holder in place.
Note time sample was removed.
S.
Lower shield over side of Reactor Building to ground.
3.
The other technician removes the sample from the shield and places it in the lead pig on the cart and brings the cart io the lab for counting.
E.
SAMPLING MAIN STACK 1.
Load spare sample holder as per D.1 of this procedure.
2.
Notify Hcalth Physics you are ready and need a prerson to survey for you.
Put on the protective clothing required on the R.W.P.
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2.
One technician procoeds to r. min viark'and up the outcide i
ntairc to the camp in room taking rads.ation surveys au he goes.
If doce r-lo it above 9 R/hr. r e t r e c. t.
The second technicion *. nits wiih c.u,ple cart at 11a c e of main stack fer the sample to be lowared.
4.
,% s u r e i h m t p revi on :ly placed shielded sa'mp l e carrier and
,t apparatur to lew r comple sc avaslabic.
Place plastic b e. g f
into chield.
5.
With a teletector, survey current u,:t.ple line and holder.
i l
Astume 4 minutet to remove holder and replace holder.
If 4
f dose will be above 1 1/4 Rem to whole body or 7 1/2 Rem te i
extrenitles do not remove holder.
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Very quickly climb to platform whern samp19 is located.
With cone tant H.P. monitoring disconnect the present samp]e ho} der and place in shield.
rJo t e time sample was removed.
~Connec' spare sample holder in pJace.
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7.
Lower bucket to ficor and then to ground, where waiting I
i technician is ready to place cample in shielded cart and l
proceed to Lab for counting.
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i 1.
Take sample from shield and place behind shield in hood.
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l 2.
Unscrcw two halves and take out particulate and charcoal l
filters.
3.
Place particulate in a petri dish and wrap <;ish with plastic.
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t 4.
If sample is too hot to count on Get.1, place compla in special Ehield and countinj ncider.
The holder ie half a 1ead brtch With an indention te hn?d the potri dish.
Thr Irich wil.1 have a 1/2 inch hole thru iT at the cenTor of it '
brick.
Tho top of the holder is another half briek.
5.
Count particulate filer and calculate particulatr-release:
using proceouro HrP-7C.CO and 7129.
EmImm0 purgin<M E.,
Place the charcoal from F.2 in special holder for Diou air v+ry sinwly thru Filter.
Try to gat all gases gi releaced to go up hood and not cut into Lab.
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If Cilver Toolito i c-used, the purgo ic not necercary.
4 ImImJ 7.
Whon done rate on fsiter quits droping, stop the air pur hAMSl 8
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N-483U E. I. HATCH NUCLE R PLANT Gee Title Page
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Titie Pc 8.
Wrap charcoal in plastic.
If sample.is tao hot to count, place sample in s'pecini shield and counting holder.
The holder is similar to one in F.4.
9.
Count charcoal (ilter and calculat7 release as per HJP-7129 and 7600.
10.
If counting room is not habitable, mobile labs should be on site.
I 11.
'If'no Lab is available send sample to outside vendor specified by Lab Supervisor for analysis.
c.
glgegget 69IE Keep samples in the fume hood behind lead bricks until proper disposal methods are arranged.
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REFEREfKE ONI.Y
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