ML19224B168

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Health Physics Procedure 1776,Revision 2:sampling of Unmonitored Potential Radioactive Release Paths
ML19224B168
Person / Time
Site: Crane 
Issue date: 02/16/1978
From:
Metropolitan Edison Co
To: Mullinix W
NRC/IE
References
1776, TM-0144, TM-144, NUDOCS 7906140149
Download: ML19224B168 (7)
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Text

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  • - t TMI DOCUMENTS DOCUMENT NO:

COPY MADE ON OF DOCUMENT PROVIDED BY

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METROPOLITAN EDISON COMPANY.

Wilda R. Mullinix, NRC 78062a023 189 333 6

1776 Revision 2 02/16/78 MASTEIR COi Y 3

THREE MILE ISLAND NUCLEAR STATION hh[ Q%Q STATICN HEALTH PHYSICS PROCEDURE 1776 SAMPLIriG OF UtW.0tlITORED POTE!iTIAL RADI0 ACTIVE RELEASE PATHS CONTROLLED COPY Table of Effective Pages Pace Date R evision Pace Date Revision Pace Date R evision 1.0 02/16/78 2

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1776 Revision 2 02/16/78 THRLE MILE ISLAND NUCLEAR STATION STATION HEALTH PHYSICS PROCEDURE 1776 SAMPLING 0F UNMONITORED POTENTIAL RADI0 ACTIVE RELEASE PATHS 1.0 PURPOSE This procedure identifies the unmonitored liquid releases from Three Mile Island and outlines the sampling program (mployed to ensure that nc radioactivity is discharge via these routes.

2.0 DISCUSSION 2.1 Liquids discharged to the Susquehanna River which are likely to contain icw levels of radioactivity are monitored by either RM-L7 or RM-L8 and WDL-R-1311.

There are other liquid releases to the river which are not monitored by any of these moniteres because the likelihood of radioactive contamination in these liquid discharges is highly remote.

Nevertheless, these releases are sampled once a month for gross beta activity.

These liquid releases are as follows:

1.

Emergency River Water Dump to the Middle Channel (if conditions require) 2.

Yard Drains Discharge to East Channel 3.

Station Sewage 1.0 m

er 189 335

'1776 Revision 2 02/16/78 3.0 REFERENC'_5 40 EQUIPMENT 4.1 Liter Polyethylene Bottles 4.2 Bechman Wide Seta II 5.0 OPERATING INSTRUCTION 5.1 Unmonitored liquid release paths as indicated on Form #1776-1 will be sampled monthly.

5.2 Each sample will be analyzed for gross Beta activity as per PCP 1950.

5.3 When the correctcd counts exceed the background count by the minimum detectable count rate (MDCR) a gamma isotopic analysis will be l

performed to determine th. source of the radioactivity as per PCP 1958.

5.4 MDCR is defined as:

MDCR = 3 Bac' round counts oer minute Count Time 5.5 Sampling Unmonitored Liquid Releases 5.5.1 Industrial Waste System 5.5.1.1 Collect a one (1) liter sample.

5.5.1.2 Take sample to the laboratory for analysis as per PCP 1950.

5.b.l.3 Record data on Form 1776-1.

5.5.2 Powdex evstem (Unit #1) 5.5.2.1 Collect ine liter sample from the sump under the Powdex System.

5.5.2.2 Take the sample to the laboratory for analysis as per PCP

.e 1950.

5.5.2.3 Record data on 'orm 1776-1.

2.0 189 336

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1776 Revision 2 02/16/78

5. 5. '3 Sewage System 5.5.3.1 At the sewage treatment plant, collect a one liter sample (liquid) from either the airation tanks or holding tank.

5.5.3.2 Take the sample to the laboratory for analysis as per PCP 1950.

5.5.3.3 Record data on Form 1776-1.

5.5.4 Yard Drains to East Channel 5.5.4.1 Collect a one liter sample at the yard drains discharge point to the Susquehanna River located due east of Unit 2 cooling tower "A".

5.5.4.2 Take sample to the laboratory for analysis as per PCP 1950.

5.5.4.3 Record data on Form 1776-1.

5.5.5 Emergency Discharge to East Channel 5.5.5.1 In the event that the 48" river water dump pipe becomcs blocked, pres.ure will ecunt forcing the water through a 10 foot loop leading to the emergency dump to the east channel of the Susquehanna River.

5.5.5.2 Discharge location to the east channel is between cooling towers "lB" and "2A".

5.5.5.3 If such conditions should exist, the water discharged to the east channel will be sampled daily.

5.5.5.4 Collect a one liter sanple at the location mentioned in step 5.1.5.2.

5.5.5.5 Take sample to the laboratory for analysis as per PCP 1950.

5.5.5.6 Record data on Form 1776-1.

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1776 Revision 2

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07/'6/78 5.5.6 Turbine Building Air Sample (Unit #1) 5.5.6.1 Once per month a continuous air sample for a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period will be taken in the Turbine Building elevation 330'.

5.5.6.2 Take the sample to the laboratory for analysis as per HPP 1605 l

and 1606.

5.5.6.3 Record data on Form 1776-1.

5.5.7 Turbine Building Air Sample (Unit 2) 5.5.7.1 Once per month a continuous air sample for a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period will be taken in the Turbine b ilding elevation 330' 5.5.7.2 Take the sample to the laboratory for analysis as per HPP 1605 and 1606.

5.5.7.3 Record data on Form 1776-1.

4.0 189 338

1776 Revision 2 02/16/78 SAMPLING OF UNMONITORED POTENTIAL RADIATION PATHS (UNIT #1 & #2)

Month / Year:

l Samole location Activity (uCi/cc)

Remarks Industrial I

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! Powdex System Sewage System l Yard Drains l Emergency Disch.

! To East Dike 1

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l Airborne Unit #1 Turbine Bldg.

Airborne Unit #2 Form 1776-1

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