ML20137X389

Part 21 Rept Re Possible Defect in Model KMG-HRH Noble Gas Radiation Monitor W/Enhanced Detector Model KDGM-HR. Initially Reported on 860222.Vendor Will Request Utils for Listed Plants to Determine If Monitors Defective

ML20137X389
Person / Time
Site:	Millstone, Hatch, Palo Verde, Perry, Cooper, Surry, North Anna, 05000000, Shoreham
Issue date:	02/27/1986
From:	Colton A KAMAN INSTRUMENTATION CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
REF-PT21-86, REF-PT21-86-107-000 KI-GEN-86-001, KI-GEN-86-1, PT21-86-107, PT21-86-107-000, NUDOCS 8603060210
Download: ML20137X389 (3)

Text

o )

Komen instrumentation Corporetton 1500 Garden of the (sods Road P.o. Box 7463 Colorado Springs, CO 80933 (303)599-1500 KAMAN February 27,1986 KI-GEN-86-001 US NRC Director, Office of Inspection and Enforcement Washington, D.C. 20555 Gentismen:

In conformance with applicable requirements and provisions of 10CFR21, Kaman Instrumentation Corporation (KI) hereby provides notification of a possible defect in the operation of a noble gas radiation monitor supplied to our clients which may relate to a potential safety hazard.

The suspect monitor is a Kaman model KMG-HRH with detector enhancement model KDGM-HR, part no. 952397-003. The monitor is designed to measure fresh equilibrium noble gas fission product mixtures to 1x10+5 micro Curies /cc as specified in REGULATORY GUIDE 1.97 Revision 3.

On 02/21/86, 09:30 am MST, a Mr. Rod Berquist of North Anna Power Station -Mineral, Virginia, notified Kaman Instrumentation of a defect in their model KMG-HRH radiation monitors. The North Anna monitors indicated a saturated detector condition at approximately 3x10+3 micro Curies /cc.

Investigation indicated a possible defect might exist in like monitors supplied to other clients and that all would be notified by phone to be followed by written notification.

On 02/22/86, 09:40 am MST, Mr. Bill Jones of the US NRC Emergency Response Center in Washington D.C. was notified of the possible defect in the KMG-HRH radiation monitor. An explanation of the possible defect was given and a list of stations having these monitors was provided. Stations having these monitors were also notified on 02/22/86.

The following information relating to this potential safety hazard is provided as required in 10CFR21.21(3), parts i through viii, to the extent known:

8603060210 PDR ADOCK h PDR h 45 Page 1

$h'f/ I O

)k

o *.

February 27,1986

.KI-GEN-86-001 (1) Name and address of individual informina the Commission Mr. Allan M. Colton, President Kaman Instrumentation Corporation 1500 Garden of the Gods Road

. Colorado Springs, Co. 80907 (ii) Identification of the basic component supplied.

Radiation monitor model KMG-HRH with enhanced detector model KDGM-HR, part no. 952397-003.

(iii) Identification of firm supplying the basic component.

Kaman Instrumentation Corporation Address same as in (i)

(iv) Nature of failure to comply.

( As explained in preceding text. )

(v) Date the informatio.n of defect was obtained.

02/21/86 at 09:30 am MST, by Mr. Rod Berquist of North Anna Power Station - Mineral, Virginia.

(vi) Number and location of basic components in use or supplied.

• North Anna Power Station (3 monitors)

Mineral, Virginia

• Surry Power Station (2 monitors)

Surry, Virginia

• Cooper Power Station (4 monitors)

Brownville, Nebraska

• Shoreham Power Station (2 monitors)

Wading River, New York

• Plant Hatch (3 monitors)

Baxley, Georgia

• Perry Power Station (3 monitors)

Perry, Ohio Page 2

l jo. .

February 27, 1986 KI-GEN-86-001

• Millstone Unit 1 (1 monitor)

Waterford, Connecticut

• Millstone Unit 2 (1 monitor)

Waterford, Connecticut

• Millstone Unit 3 (2 monitors)

Waterford, Connecticut

• Palo Verde Unit 1 (3 monitors)

Wintersburg, Arizona

• Palo Verde Unit 2 (3 monitors)

Wintersburg, Arizona

• Palo Verde Unit 3 (3 monitors)

Wintersburg, Arizona (v11) Corrective action, responsible oraanization, and time to complete the action.

Kaman Instrumentation will request in writing that each power station conduct tests to determine if a possible defect exists with their model KMG-HRH monitors. Upon notification of a defect, Kaman Instrumentation will provide the modification to properly indicate detector saturation above the required 1x10+5 micro Curles/cc.

The estimated time to correct a reported defect for a given plant is 4 weeks after notification of the defect.

(viii) Advice relating to defect beina alven to purchasers.

Readings obtained during DBE conditions may be invalid.

If detector saturation is indicated, steps should be taken to obtain samples of the monitored effluent for analysis by other means.

We believe this information to be complete as required under 10CFR21 part 21. Please contact Mr. Frank Bergamo, Customer Service Manager - Radiation Monitoring, if additional information is required. Mr. Bergamo may be reached at ph. (303) 599-1659.

Sincerely, Allan .Colton President Kaman Instrumentation c.c. Roger Patterson M5505 EW-W enclosures: 2 copies copy to each power station Page 3 i