ML20136E344

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Informs That No Further Action Planned on Part 21 Rept Re Calibr Difficulties w/TMI-upgrade Radioactive Effluent Gas Monitors Mfg by Kaman.Vendor Notified Customers & Design Upgrade Proposed
ML20136E344
Person / Time
Issue date: 10/13/1982
From: Wigginton J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To: Joyner J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20136E348 List:
References
FOIA-85-680 NUDOCS 8301060390
Download: ML20136E344 (1)
v • d • e


Text

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UNITED STATES NUCLEAR REGULATORY COMMtsslON

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00T 131982 H. Joyner, Chief, TIB, Region I MEMORANDUM FOR:

A. F. Gibson, Chief, TIB, Region II J. G. Miller, Chief, TIB, Region III G. D. Brown, Chief. TIB, Region IV H. E. Book, RSB, Region V i

i and

. J. Cunningham, Section Chief, Section B, Eng neer ng THRU:

A Technical Support Branch, DEQA, IE

'5 J. E. Wigginton, Section B, Engineering and Technical FROM:

Support Branch, DEQA, IE.

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SUBJECT:

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m. m,. m u r. e Northeast Nuclear Energy Company filed a 10 CFR 21 Discussions with Kaman Instrumentation, Inc. (copy of Part 21 report enclosed).

Kaman representatives revealed that all customers hav 19, 1982

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Also enclosed for your information is the August have been proposed.

Kaman letter to me with its three attachments.

ETSB/NRR is aware of this problem and is studying Kaman's position that the monitor's original design adequately meets the requirements for TMI upgrade.

Since the vendor reports that all customers have been notified and has If you proposed a design fix, IE plans no further action on this matter.

have any questions concerning this matter, please call me.

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c<ds' mes E. Wigginton

,Section B Engineering and Technical Support Branch Division of Engineering and Quality Assurance Office of Inspection and Enforcement

Enclosures:

As stated P. Stoddart, NRR cc:

W. Fisher. IE W. Gamill, NRR R. Baer, IE R. Bores, RI

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r B. Grimes, IE J. Stohr, RII W. Mills, IE C. Paperiello, RIII t.. Cunni

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n H,ay 13, 1982 Docket Nos. 50-245 l

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50-336 I

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1 Mr. Richard C. DeYoung, Director 3

Office of Inspection and Enforcement i

. U. S. Nuclear Regulatory Co= mission Washington, D.C.

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References:

(1)

W. C. Counsil letter to B. R. Denton, dated Decembe'r 31, 1979.

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W. G. Counsil letter to D. G. Eisenhut, dated e j ; '"

April 16, 1982.

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Millstone Nuclear Power Station, Units 1 and 2 Report of Substantial Safety Razard

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In conformance with applicable provisions and requirements of 10CTR21, Northeast Nuclear Energy Company hereby provides notification of a Substantial Safety Hazard (SSH) for Millstone Units 1 and 2.

l At approximately 11:35 a.m., May 10,1982, the Region 1 Office was j

notified by telephone' of the unacceptability of the two radioactive l

gas monitors procured and installed as required in Sections II.F.1.1 j

and II.T.1.2 of NUREC-0737, ' Clarification of TMI Action Plan Requirements.

l These monitors are to provide radioactive Ufluent gas monitoring during

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Post-accident conditions.

j It has been determined by NNECO personnel that' tbe count rates o

indicated by the monitors, as they were received from the supplier, V are extremely sensitive to gamma energy. Therefore, they cannot l

be calibrated over the range of gaussa energies expected from the j

mixture of radioactive gases released during post-accident conditions.

This will preclude the determination of specific activities of such i

radioactive gases. Therefore, the monitors are not in conformance l

with their intended purpose.

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The monitor count rate in response to a high-energy gamma (Kr 88) is l

j several orders of magnitude greater than that observed from a low-energy ga=ma (Xe-133), for equal specific activities (see attached response curves).,The use of these monitors would provide grossly

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l inflated gaseous affluent measurements. Therefore, they would not provide quantification, nor even reasonable estimates, of effluents.

Use of the measured data could result in public evacuations, with the attendant hazards of unnecessary e'vacuations.

The following information applicable to this Substantial Safety Hazard is provided as required by 10CTR21.21(3), i through viii.

(i)

Name and Address of Individual Inforcing the Ce==ission

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William C. Counsil, Senior Vice President, Nuclear Engineering j

and Operations, Northeast Utilities Service Company, P. O.

Box 270, Hartford, Connecticut 06101.

(ii)

Identification of the Basic Component. and (iii)

Identdffration of the Firm Supplying the Basic Co=ponent Kaman Instrumentation, P. O. Box 7463, Colorado Springs, i

Colorado. 80933-7463; is the supplier of the KMG-HRH High Range Gas Monitor.

(iv)

Nature of the Tailure to Comply l

(See discussion above).

(v)

Date on Which the Information of such Tailure to Comply l

Was Obtained Northeast Utilities Service Company (as agent for NNECO)

I received the Einal. Calibration Report.from_the. supplier..

dated April 16, 1982. A study of the report subsequently revealed the inability of the monitors to conform to the requirements of NUREG-0737, leading to the initiation of a substantial Safety Hazard Evaluation.

(vi)

The Number and Location of All Such Monitors in Use. Supplied.

or Being Supplied Tuo monitors have been delivered a,nd installed, but not yet put into service; one at Millstone Unit 1 and one at Millstone i

Unit 2.

Two additional monitors have been ordered, but not yet del

  • sered or accepted, for installation into Millstone Unit 3.

Northeast Nuclear Energy Company has no information regarding the use of this monitor by other licensees.

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Corrective Action. Organization Responsible, and Time to Complete Action The supplier intends to design a modification that would

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bring the monitors into compliance with NUREG-0737.

The failure e.o successfully bring the monitor into co=pliance may require a redesign of the existing monitors. Northeast Nuclear Energy Coepany is unable at this time to provide dates for completion of the modifications or for the in-stallation of conforming monitors. Northeast Nuclear Energy Co=pany vill inform the Co==ission by August 1,1982 of the status of these efforts and of appropriate schedules.

(viff)

Advice Related to the Tailure to Ce= ply Being Given to the Licensee Not applicable.

Refers to supplier.

The existing procedures for monitoring and quantifying high-level radioactive gaseous releases, as docketed in References (1) and (2),

will re: min in effect until these or alternate monitors are declared operational.

Vith the docketing of this information, NNECO hereby a= ends the schedule

  • for cc:pletion of Items II.T.1.1 and II.F.1.2 of NUREG-0737 as previously provided in Reference (2).

We trust this infor=ation is co=plete as required under 10CFR21. Please

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contact Mr. Richard T. Laudenat, Manager, Generation Facilities Licensing, j

of my st'aff, if you need additional information.

Very truly yours.

NORTHEAST NUCLEAR ENERGY COMPANY

/74M/Lo W. C. Counsil Senior Vice President I

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