ML20136B674

Submits TMI Daily Rept Re Reactor & Plant Status,Radwaste & Health Physics & Environ Measurements

ML20136B674
Person / Time
Site:	Crane
Issue date:	05/30/1979
From:	Jay Collins Office of Nuclear Reactor Regulation
To:	Stello V, Vollmer R Office of Nuclear Reactor Regulation
References
NUDOCS 7909100248
Download: ML20136B674 (7)

Text

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• [V UNITEo STATE'S 4,

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NUCLEAR REGULATORY COMMISSION

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MEMD RAfDUM FOR:

Victor Steilc Richard Vollmer F D0M.:

J. T. Collins S'J5)E;T:

TM! DAILY REPORT A.

arte-znd F'a-: States 1.

Plant is continuine to coe-ate solid on the pressurice.

Pressure as of 133C was 353 psi.

2.

The RB sump level measurement recorded a: 0005 on 5/30 was 288.E7.

The licensee has not completed revising the procedure for recalibration of the Heise gauge.

Fopefully this wif7 be completed today.

3 Leak testine was completed on the remaining two coils with ne dirce able leaks.

L.

Camples from the pressurizer and the primary system scheduled

'or today were delayed do to problems in the sanping line.

Hope to work this out today.

Tne Technical Support prou'p has rec'om$ened that the pH cf

~

J 5

the primary system be raised f rom 7.6 :o E.D to reduce solubili ty problems.

(see copy of letter attached)

~

6.

A sample of the contalnnent c mosdhere was collected on 5/30 which showed an iodine - 131 concent ration of 1.69 X 10 a uti/cc.

(copy of the analysis is attached)

~

~

7.

The IIst of critical equipment in the RB that may be effected,

by increase water level has not been compiered.

Draft now s'cheduled to be available by 5/31.

8.

Radiation survey in the decay heat vaults was conpleted on 5/29.

A copy of the survey is attached for your review.

9 B OTSG Cooling - Licensee working with BLR opta ize the suction pressu're~ Ton 'the pump for the demineralizers.

Still working on a procedure for cutting into B CTSO.

Repair of leeks should ' start tomorrow.

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e

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VI::o Stello P.ichard Vollmer

.a.

10.

Management nee:ing normally held daily has been :ut ba:k to mee:Ing twl:e a week, Tuesdays and Fridays a: 10:00 A..

M C.

Radsaste and HP 1.

F.eviewed and approved design c;Iteria for WG-21, Interim Sclid Was:e Storage Area.

2.

Licensee has brought in a consultan: tc assist ir the calibration o' the flow neasu-ing devices for the auxiliary and fuel handling buildings and to balance the aie flowr to allow corree: fan line up.

3 Tank Farm the two new eductors #or the lower two tanks should be Installed today and water transfer from these tanks to upper tanks should start tonight.

4 EPICOR-Il - Flow testing of the vendor equipment is scheduled to begin today.

5.

Continue to work on the Environmental Assessrer.: 'or the EPICOR-11 system.

6.

Plans are being finalized for' the. meeting here on Friday 6/1 with "the Congressional S'ubcommittee'on l'atural F.esources and the Environmental and for the reeting at the Elizabethtown College on Saturday 6/2.

R. Vollmer and J. Collins to partici-page in this meeting.

t Ground surveys made between 1200, 5/29/79 and 1200, 5/30/79 of f-site show no levels over the background levels of 0.02 mR/hr.

An ARM.S aerial survey made at 1916, 5/2S/73 detected oniv background levels.

All air, milk and gas samples analyzed on 5/27/79 showed no detectable I-131.

f de.,

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' J. T. Collins cc:

D. Eisen5ut

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J. Collins.

B. Grimes D. Crutchfield J. Kopeck -

Chief, Resident Officer,' IE Daily Report File s

U ( Pr'# '

intor-Offica Memorandum c

W' D r.e >

2:ay 25,1979

-[El 2 Service 4

S.ne:: pH Reactor Coolant System D. E, Eetrick Tc G

r 6, Location Ihree Mile Island

Reference:

B&W Letter GER/031 dated May 22, 1979 i

GPUSC Technical Support has review'ed the above referenced B&W 1etter and is in concurrence with the B&W recom:tendation to raise the pH of 7.6 as analyzed from the May 18, 1979, sample to 8.0.

The method for accomplishing this should be as follows:

Addition 643 lbs. of sodium hydroxide, or 1102.5 liters of 20 ut.%

solution. To prevent locally high (20%) concentration in the RCS, the caustic should be added in small increments over s,everal days..These increments should be 100 liters or '1 css per addition.

Tne 20% solu-tion is less than that recom:nended by B&W to reduce solubility problems.

Tne pH data for the RCS has been bouncing around somewhat and no extra-polation to pH 7.0 can be predicted.

Thus, we recoz=nend that the caustic addition be initiated as soon as practicable.

It is recom:nended that.the additions be made through the borated water mix tank and addition pu=p in the chemical addition-system into the raakeup tank.

Fill of the borated water mix tank should be via the truck connection presently being utilized for addition of boron solution to the plant.

y F D oore, Jr. &

JPM/JWL/a1 cc:

B. Rusche W:=575131iipt (NRC)

~

GPU Service Corporation is a subsid:ary of General Pubic U:ilmes Corporation

Babcock &Wilcox go,,,cen,.a1;,n c,,,,

P.O. Box 1260, L)nchburg. Va. 24505 May 22, 1979 Telephone: (804) 3B4 5111 er: M m

VA.

N/'

GEK/031 f,'tc wrnz GPU Service Corporation Post Office Box 480 Middletown, PA 17057

Subject:

RC solution pH

Dear Mr. Moore:

7 The most recent reactor boolant sample ~ taken 5/18/79 was analyzed as having a pH of 7.6.

B&W' bas. recommended that the pH be maintained at > 7.5.

We recommend that the pH be increased to 8.0 at this time to prevent further reduction.

This will require the additi(

643 lbs. of sodium hydroxide, or 630 liters of 35 wt.% solution.

To prevent locally high (35%) concentration in the RCS, the caustic should be added in small. increments over several days.

These increments should be 100 liters or less per addition.

The solubility limit of 35 wt.: NaOH is about 60F, so precautions should be taken to-maintain th~e solution above this temperature.

The pH data for the RCS has been bouncing around somewhat

-and no extrapulation to pH 7.0 can be predicted.

Thus, we recommend that the caustic addition be initiated as soon as practicable.

We further suggest that they make the additions by using the lithium hydroxide mix tank and addition pump in the chemical addition sy s t e m.-

If you have any further q ue s ti ons, please do not hesitate to contact me.

Very truly yours,

~

G.

E. Iulynych Pr,ogram' Manager, TMI-2 Recovery Program GEK/JDP/lbs

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Rogers G.

Schaedel G.

Skillman

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P.. Boucher R.

Wilson

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The Babcock & Wilcor Company / Established 1857

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