ML19262A361

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Responds to General Tech Spec Activity Limits on Primary & Secondary Coolant for TMI-1 Forwarded to Jg Herbein on 740505.Forwards Related Questions & Comments to Be Reviewed Prior to Issuance of General Tech Specs in Final Form
ML19262A361
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 08/09/1974
From: Lawyer L
METROPOLITAN EDISON CO.
To: Bernero R
US ATOMIC ENERGY COMMISSION (AEC)
References
GQL-0224, GQL-224, NUDOCS 7910260682
Download: ML19262A361 (6)


Text

AEC DIS ~'I?.t" ICN 70 ? ATT 50 OcGET m'- 'I_AL (TDiPORARY 70F.M) CONTROL NO: 8359 FILE:

FRm: . . DATE OF ECC DATE REC'D LTR TWX RP"' C'"HER Metropolitan Edison Co Reading, PA g,3, ,,, ,. 3-9-74 3-13-74 X TO: , ORIG CC OTHER SENT AEC PD?- XXX Robert Bernero 1 sizned CLASS L3 CLASS PROP I:20 INPUT NO CYS REC'D DOCKET 50:

vvy 1 50.299 DESC?.IPTION: ENCLOSU~',ES :

Ltr re gen'l Tech Specs activity limits on primary & secondary coolant......

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Mr. Robert Bernero 'r ' -4 ? I *' D Directorate of Licensing  % j.5\ [ i U.S. Atomic Energy Ccc: mission ,,[ /(/ p Washingten, D.C. 205h5 N' ter c

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Dear Mr. Bernero:

This letter is in respense to the general Technical Specification-activity limits on the primary and secondary ecolant for Three

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Mile Island, Unit 1, which were sent to Mr. J. G. Herbein, TMI Station Superintendent, on May 5, 197h. A review of these 'x -

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activity limits by our Radiation Safety and Environmental Engineering Section resulted in the enclosed list of questions and ccmments, which we trust will receive your attention before the general Technical Specifications are issued in their final form.

Please reccgnize that any of the recccmended changes to the standardized Technical Specificaticns listed en the enclosure with this letter should not be considered proposed changes to the Technical Specifications for 2ree Mile Island, Unit 1, nor should they be considered proposed changes to the standard-iced Technical Specifications ence they have been feraclly issued to Met-Ed.

Sincerely, REGULATORY DOCKET FILE COPY'ana'g'e'""7'" M r-Operaticnal Quality Assurance LLL:JF/:pa

Enclosure:

Technical Questicna File: 7.7.h.3.6.1 20.1.1 835b 1485 204

Technical 0,uestions

1. Is it the intent of this specificaticn to replace the existing technical specificatien section 3.1.h, Reactor Coolant System Activity, and section 3.13, Secondary Syste= Activity? If this is the case, why was the basis for acciient analysis changed frc= section 3.1.h. which utilized the whole body dose as limiting-versus-thyroid dese?
2. P.1 Maximum Reacter Ccolant Activity Specification Line 1; Ucte 1. The licensee requests clarificatio .. the tern " dose equivalent I-131." Please provide the for=ula for calculating dose equivalent I-131 in terms of actual quantity and isotopic mixture present.
3. Same paragraph as #2.

There is not sufficient information present in the prcposed specificaticn and basis to permit calculation and/or derivatien of the propcsed limits. Please provide additional information and assumptiens used in the derivation of the pre-posed limits. It should be noted that this infernation may also be required by the licensee at sc=e ti=e to determine if an unrevieved safety questien exists and to revise the FSAR acccrdingly.

h. Sa=e paragraph as #2.

Lines 5 and 7. The licensee requests clarificaticn of the terms "equilibriu= limit" and " equilibrium value".

5 Sa=e paragraph as #2.

Line 11. Licensee requests clarification of the factors contributing to the dete=nination of the value of 36/E pei/g= cther than the change in X/Q.

6. Specification Second paragraph; Second sentence. The licensee requests clarificaticn of the requirement to lower the equilibrium iodine activity limit by an a cunt prorcrtienn c 0c the macunt by which the Lo-hcur limit was exceeded. Licensee furthec requests clarification of the term "=aximum value" in the fifth line Of this paragraph.

1485 205

9

7. Figure 1.

Licensee requests more information concerning the basis for the curve in Figure 1.

8. Page 2, Sa=eline Frequency.

Licensee notes that table 4.2.1 as referenced in the first sentence concerns Inservice Inspection Requirements. The licensee believes that the sampling requirements of Table h.1-3 and Table 1 of Appendix B for primary and secondary analyses are sufficient to maintain safe operations, considering the probability of the simultanecus occurrence of a hypothetical break and loss of off-site pcuer and censidering the requirements for daily reactor coolant leakage evaluations.

9 Page 2, Sampling Fre'uency.

Item (c). The specification for Maximus Reactor Ccolant Activity (p.1) does not discuss an equilibrium limit fc secondary activity.

10. Page 2, Reecrtine Recuirements.

Licencee requests clarification as to where the "above information" shall be included in the semi-annual report.

11. Page 2, Recortine Beauirements.

Second sentence. Licensee requests clarification of the ter: " limits of the specificaticn." '4 hat type of report must be submitted to the Directorate of Licensing within 30 days?

12. Page 2, Samuline Frequency and Table h.2.2.

The licensee considers the sampling frequency requirements to be unduly excessive and unjustified fer the following reacons:

a. There is no need to sample iodine upon ec=plete deprescurizaticn of the reacter coolant system since the accident conditicns en which the subject limits apply cannot occur.

1485 206

Below 1600 yai the reactor must be shut down and the accident b.

ecnsequences are significantly reduced.

c. Table h.1-3 and Table 1 of Appendix 3 presently require the reactor coolant system to be sanpled 5 times a week when Tavg is greater than 200cF, the secondary coolant system to be sa=ul d weekly, and primary coolant to be sa= pled for I-131 and -133 weekly.

In addition, Table 4.1-2 requires Reactor Coolant Leakaae to be evaluated daily when the reactor coolant system temperature is greater than 525 F. The above sampling is considered sufficient to determine if unusual fuel failures er steam generator leakage has cecurred and equilibriu= limits vill be exceeded. If such conditiens are not present, it is unnecessary to sa=ple following a change in power exceeding 15 percent of rated pcver as proposed or every b hours.

13. Page 3, Basis.

Second paragraph; Line h. Licensee requests clarificatien of the ter: " adverse =eteorological conditiens".

lb. Page 3, Basis.

Fourth paragraph. Licensee requests basis for changing X/Q value cf 2x10- sec/= , as in present technical specifications, to 9x10-4 sec/=3,

15. Page 3, Secondarv Syste: Activity.

Specifications. Licensee requests clarification of the value of 0.1 uci/g= and wishes to kncv vhy it differs frc= the present technical specificatien value of 1.0 pei/cc.

16. Same paragraph as #15.

Licensee requests clarifications of the limit of 500 F. It appears that what is desired is fcr the plant to go to hot shutdevn, which is defined as a o

reactor ecolant temperature less than 525 F.

1485 207

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17. Page 3, Secondary Systen Activity.

Similar cc=sent to item #1h with respect to X/Q value.

18. Table 4.1-2 Licensee requests clarification of gross activity requirements in speci-fication 3.1.D. as mentioned in notes (1) and (2). The rationale for this is that there is no existing specification 3.1.D.

19 Table h.1-2.

Licensca requests clarification of the frequency for isotopic analysis.

Is it to be bi-veekly or semi-annually?

20. Table h.1-2.

Licensee requests clarification of the check for radiochemical analysis for E determination and its frequency.

1485 208