ML20118B439
| ML20118B439 | |
| Person / Time | |
|---|---|
| Site: | Hatch, Monticello, Peach Bottom, Salem, Palisades, Saint Lucie, Grand Gulf, Cooper, Pilgrim, Summer, Columbia, Brunswick, Limerick, Turkey Point, Crystal River, Waterford, Robinson, Bellefonte, Shoreham  |
| Issue date: | 09/11/1992 |
| From: | Conrad R, Hinch H, Volkel L ASEA BROWN BOVERI, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-92 NUDOCS 9210020193 | |
| Download: ML20118B439 (5) | |
Text
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A ED ED 9%EBER ASE A DHOWN K1VIHi September 11, 1992 Document Control Desk US Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
ABB Type 27N Undervoltage Relays Environmental Qualification Rating, Radiation Tolerance (10CFR Part 21 Report)
Notification by: ABB Power T&D Company Protective Relay Division 7036 Snowdrift Road Allentown, PA 18106 Richard Conrad Sr. Developement Engineer The type 27N undervoltage relay is a precision electronic protective relay used in electrical switchgear. A typical application would be for detection of a low voltage condition on a bus energized by a diesel generator.
A group of ABB type 27h Undervoltage Relays have been subjected w an irradiation test program by an iedependant engineering company. Degradation was found at levels significantly below the those stated in the IEEE 323 Qualification Report supplied ny ABB.
The test group consisted of three (3) units built with both time delay and harmonic filter options in addition to the basic undervoltage measurement function. The time delay function was found to be the most sensitive 1
circuit. The circuit failed to initiate a delay when an undervoltage condition occurred, which in this relay, causes an instantanenus response.
The most sensitive sample failed at a level between 2.2SE03 and 4.SE03 rads.
The least sensitive sample failed between 1.lE04 and 3.06E04. The hannonic filter option caused the pickup / dropout operating points to shif t high at test levels above those af fecting the time delay, but beiow the testing end point of 6.3E04 This option is only available with the time delay models.
Post-irradiation testing with the hannonic filters removed, showed the basic undervoltage function, which constitutes the instantaneous model, was still nonnal when the testing stopped. Additional testing may be done at a later date to define the upper limit for this circuit function alone.
ABB recommends that all users review applications requiring exposures greater than IE03 rads T.I.D. for type 27N Undervoltage Relays with the time delay function option, and greater than SE04 rads for the instantaneous models.
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' ABB has begun a program to review qualification reports for other products which may also be affe:ted.
The type 27N models affet.ted can'be identified by means of their device catalog numbers as follows:
P Cat #211Txyz5 or 411Txy z5
.Where:
"x" is 0 for instantaneous models "x" is T, 5, 6, or 7 fcr tima delay models "Y" mt, be 1, 2, 3, or 4 for both models "z" may be 5 or 7 for boti' models The catalog number may be followed by various suffix letters, jnculding
-L,
-HF, -DP for special features.
These relays were manufactured during a period when corporate name changes occurred. The nameplate may show one of these names: BBC Brown Boveri Electric Co.,-BBC Brown Boveri, or ASEA BROWN BOVERI.
The ottached pages list the known end users for whom ABB supplied-IEEE 323 Certification RC-5039-A and IEEE 323 Qualification Report RC-5139-A either directly or indirectly. ABB is notifying users concerning the conditions identified in this report.
Prepared by h I w / OAvu
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Richard Conrad
-Sr. Dev. Eng.
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Page 1 - 27N Qualification Reports issued
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Date Time Delay Models of the 27N relay:
Issued South Carolina Electric & Gas Co., V. C. Summer, PO# A5d4414 via ABB Power Distribution, Sanford, FL,.S0 281026 4/27/90 Washington Pubilic Power Supply Systen, Hanford #2 via General Electric Co., NEB 0, P0 205-XP590 7/21/83 W.P.P.S.S WNP-2, P0 94714, 4/21/88-Commonwealth Edison Co., Dresden, PO 330765 1/10/90' Public-Service Electric & Gas, Salem,'P0 P2392142 8/21/91 Carolina Power A Light Co., Brunswick, PO 509258-M-AT 6/4/85 and PO 6G0915AT 7/18/91 Carolina Power A Light Co., H. B. Robinson, P0 6A6512-BJ 8/20/90 Florida Power Corporation, Crystal River, P0 F 9017841D 1/11/85 Florida Power & Light Co., St. Lucie Unit 2 via Ebasco Services Inc., NY, P0 NY-422546, Sup 42 7/21/83 Florida Power & Light Co., St. Lucie Unit 2 via Brown Boveri Electric Chalfont, PA, S0 T75256-04046 10/17/83 Florida Power & Light LCo., Turkey Point 3,4, P0 C9167990247 v'ia ABB Power Distribution Inc., P0 287142 1/30/92 Philadelphia Electric Co., Peach Bottom via_BBC Brown Boveri Electric, Tulsa, OK, SO 06941 6/7/85' Philadelphia Electric Co., Peach Bottom, P0 EE 276320 2/24/87 and P0 ME343185-N0 11/12/88-and P0 NE335804 3/13/89 Philadelphia-Electric Co., Limerick via BBC Brown Boveri Inc., Tulsa, OK, 50 527741 11/17/86 Georgia Power, Hatch Unit 2 via Farwel' A H9ndricks, Inc., PO 6118401-6/13/92 ABB Power T & D Company Inc.
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Tennessee Valley Authority, Bellefonte 2/1/84.
via Brown Boveri Electric, Chalfont, PA, SO T75664-04172 Entergy Operations, Inc., Grand Gulf, P0 GG 10674
/5/86 Entergy Operations, Waterford 3. P0 WPO43183 2/5/92 Consumers Power Co., Pal'sades, P0 2007-7746 9/1L/85 Long Island Lighting Co., Shoreham via BBC Brown Boveri, Tulsa, OK, PO 05421-90 4/21/85 Northern States Power Co., Monticello, P0 D15882 MQ 3/15/84 and P0 PA-9527 10/19/89 Northern States. Power Co., Monticello, P0 PA-6939MQ via ABB Service Co., Mendota Hgts., MN, P0 MP-00177-C 11/6/89 Nebraska Public Power District, Cooper via Farwell & Hendricks, P0 E1225/60139 12/18/86 Boston Edison Co., Pilgrim, P0 NST002656 2/9/88 Certificates issued to extend above reports to -additional orders:
Commonwealth Edison Co.
via Nutherm International Inc., P01131-134-000 5/20/92 and P0 4488-001-002
_9/30/91 and P0 4225-01 (thru Hannan_ Supply CO. P0 DC16229) 12/13/90 Philadelphia Electric Co., Peach Bottom, PO BW-645665N0 10/31/91 and PO BW-633759 2/22/91 and P0_BW-376228 1/3/91 and PO BW-376228 11/17/90 and PO BW-633759
'11/16/90 and PO BW-6103C7 6/16/89 Philadelphia Electric Co., Limerick via Bechtel Construction Inc., #18253-F1-00284 via ASEA BROWN BOVERI, INC., Sanford FL, P0 P130841-3/8/89 and P0 LS-229591-NB, via Bechtel Construction 12/9/87 and P0 18250-F1-00426, via Bechtel Construction 6/30/87, 6/3/87 and PO 5-27814/3709584, via BBC_ Brown Boveri, T.lsa, OK 2/24/87 L
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.1 Page 3 Washington Public Power Supply System, WNP-2, P0 217430 5/18/91 and P0 209383 5/7/90
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and P0 203744 8/16/89 and PO 099610 1/10/89 and PO 94714 4/21/88 Nebraska Public Power District, Cooper, PO 326892 1/8/91 and PO 326892 12/6/90 and PO 298081 4/4/89 Carolina Power & L1ght Co., H. B. Robinson, PO 6C8631BJ 9/27/90 Florida Power Corp., Crystal River 3, via ABB Power Distribution, Sanford, Fl., P0 P650863 9/18/89 and P0 P650863 9/14/89 Entergy Operations, Inc., Grand Gulf, P0 MP-819711 9/20/88 and P0 MP818113 d/24/88 Flor.ida Power & Light Co., St. Lucie, Unit 2 via Ebasco Services Inc., NY, PO NY-422546, Sup 42 6/5/87 Florida Power & Light, St. Lucie, P0 P089802-00 via BBC Brown Boveri, Inc., Sanford, FL 4/14/87 (End user unknown) via Farwell & Hendricks, Inc., P0 F0357/60429 3/29/88 d
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