ML18139A188
| ML18139A188 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 04/17/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Ferguson J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8005070196 | |
| Download: ML18139A188 (6) | |
Text
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In Reply Refer To: RII:JPO 50-338, 50-339 50-404,* 50-405 ~-2§ 50-ijD UNITED STATES NUCLEAR REGULATORY COMMISSION . R-EGION II 101 MARIETTA ST., N.W., SUITE 3100 ATLANTA, GEORGIA 30303 APR 1 7 1980 Virginia Electric and Power Company Attn: J. H. Ferguson Executive Vice President-Power P. O. Box 26666 Richmond, VA 23261 Gentlemen: ~~- e'P 800&0'10 /(}~ The enclosed Bulletin 80-09 is forwarded to you for action. A written response is required. If you require additional information regarding this, matter, please contact this office.
Enclosures:
- 1.
IE Bulletin No. 80-09
- 2.
List of IE Bulletins Recently Issued Sincerely, Director
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e Virginia Electric and _Power Company cc w/encl: W.R. Cartwright, Station Manager Post Office Box 402 Mineral, Virginia 23117 P. G. Perry Senior Resident Engineer Post Office Box 38 Mineral, Virginia 23117 W. L. Stewart, Manager Post Office Box 315 Surry, Virginia 23883 APR 1 7.1980 _,_.. ...... J:
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J UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C. 20555 April 17, 1980 SSINS No. 6820 Accession No.: 80,02280659 IE Bulletin No. 80-09 \\HYDRAMOTOR ACTUATOR DEFICIENCIES ITT General Controls (ITT-GC) reported to the NRC two (2) problem areas pertaining to their Models AH-90 and NH-90 Series Hydramotor Actuators. The NH-90 designators depicts nuclear class lE design. Either of the problems reported could affect the operation of safety related equipment installed in nuclear power facilitie~: A. On December 7, 1979, ITT-GC reported the use of springs having incorrect material installed in Models AH-90 and NH-90 Series Hydramotor Actuators. Instead of 5160 steel, type 1060-1070 steel was used for the No. 1 springs in the actuators. The incorrect spring material does not meet the design strength and upon actuation of greater than 3 inches stroke, a permanent set occurs resulting in a decreased force output of up to 160 lbs, depending on spring combinations used and specific adjustments made to the actuators. About 368 defective springs were used between September 1975 and January 1978. B. On February 5, 1980, ITT-GC reported that the ITT-GC "Selection Nomograph" for AH-90 and NH-90 series hydramotor actuators represent the actual spring or hydraulic forces only and do not include the effects of friction or residual hydraulic forces. It has been determined that the actuators can have about 100 lbs. of friction and an additional 40 lbs. of residual hydraulic pressure. Use of these nomographs may result in selection of actuators undersized for the use intended. C. Action to be taken by licensees and construction permit holders
- 1.
Each licensee and each holder of a construction permit should determine whether any safety-related system or component in the facility uses an AH-90 or NH-90 series Hydramotor Actuator,manu-factured by ITT General Controls.. -{Note: To assist in this deter-mination a listing of customers that have purchased said actuators and the number of actuators purchased is appended hereto as Attachment No. 1. Since some of the Original Equipment Manufac-
- turers (OEM's) may delete the identity of components used in their product, it may be necessary to consult with the OEM to make the required determination.)
- 2.
Operating~facilities using said actuators in safety-related systems should: )? * 1~1/
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- a.
Review system functional testing to determining that equipment using the subject actuators are periodically tested.
- b.
Examine test records to determine whether the functional test results conform to system requirements;
- c.
Verify that ample margin exists with respect to thrust delivered to the load for long term operation considering improper spring material and methods used to select the actuator for a particular application.
- d.
Take any corrective actions required by the results of items a.
- b. and c., above.
- 3.
Facilities with construction permits using said actuators in safety-related systems should:
- a.
Reevaluate actuator size selection in light of the possibility of using actuators with defective springs or.which were sized by the "Selection Nomograph" without accounting for internal friction and hydraulic resistance. Said reevaluation should assure that the actuators will perform their intended function.
- b.
Modify equipment qualification, preoperational and startup test programs, as necessary, to demonstrate the functional adequacy of the Hydramotor Actuator in light of the aforementioned concerns. Particular attention should be given to the possi-bility of defective springs taking a permanent set. Note: ITT General Controls is presently performing actuator testing on units supplied by one of their customers (American Warming & Ventilating Co. Inc.) and revising the methods used to select actuator application. Each licensee or holder of a construction permit should report to the NRC within 60 days of the results of actions taken, any corrective actions required, and the *date when corrective actions were or will be completed. The report should be addressed to: U. S. Nuclear Regulatory Commission Director of Reactor Construction Inspection,*O.I.E. Washington, D.C. 20555 with a copy to the Regional Office. Approved by GAO, B180225 (R0072); clearance expires 7/31/80. Approval was given under a blanket clearance specifically for identified generic problems. J:*- 4 it, 1~*:
I. ...........,-. ---***----*-**'"****-~-~-------------~-~--~~-c-- .. -~-*-*--*--**-****-**------_-... -__ -_.. -._- __ -------_-_ - "---=--*--,--~,.-,*,c*-*...,,_ **- --"****** Customers ACDC Inc, Cincinnati, OH e Attachment No. 1 American Warming & Ventilating Co., Inc. Maumee, OH Copes Vulcan, Inc. Lake City, PA Fisher Controls Co., Inc. Marshalltown, IA Fisher Controls Co., Inc. Corapolis, PA General Signal Corporation West Warwick, RI ITT Hammel-Dahl Warwick, RI Joy Manufacturing New Philadelphia, OH Masoneilan International, Inc. Norwood, MA Pacific Air Products Santa Ana, CA Posi Seal International, Inc. No. Stonington, CT Powers Regulator Co. Portland, OR Powers Regulator Co. Skokie, IL Ruskin Manufacturing Co. Grandview, MO Valtek, Inc. Springville, UT Quantities 27 145 2 38 4 2 4 18 10 16 14 1 74 4 9 TOTAL 368
.... - -*-:_--_--_* --_* -, ~-:-::. ~. - : **0..- :. -~--'...- ~--"l ~*=--- =--' _______.i---~--- -..... e IE Bulletin No. 80-09 April 17, 1980 Bulletin No. 80-09 80-08 80-07 80-06 80-05 80-04 80-03 80-02 80-01 79-0lB 79-28 RECENTLY ISSUED IE BULLETINS Subject Date Issued Hydramotor Actuator 4/17/80 Deficiencies Examination of Containment 4/7/80 Liner Penetration Welds BWR Jet Pump Assembly 4/4/80 Failure Engineered Safety Feature 3/13/80 (ESF) Reset Controls Vacuum Condition Resulting 3/10/80 In Damage To Chemical Volume Control System (CVCS) Holdup Tanks Analysis of a PWR Main 2/8/80 Steam Line Break With Continued Feedwater Addition Loss of Charcoal From 2/6/80 Standard Type II, 2 Inch, Tray Adsorber Cells Inadequate Quality 1/21/80 Assurance for Nuclear Supplied Equipment Operability of ADS Valve , 1/11/80 Pneumatic Supply Environmental Qualification - 1/14/80 of Class IE Equipment Possible Malfunction of Namco Model EA 180 Limit Switches at Elevated Temperatures -12/7 /79 Enclosure Issued To All power reactors with a CP or OL All power reactors with a CP and/or 01 no later than 4/7/80 All GE BWR-3 and BWR-4 facilities with an OL All power reactor facilities with an OL All PWR power reactor facilities holding OLs and to those with a CP All PWR reactor facilities holding OLs and -to those
- nearing licensing All holders of Power Reactor OLs and CPs All BWR licenses with a CP or 01 All BWR power reactor facilities with and 01 All power reactor facilities with an OL All power reactor facilities with an 01 or a CP..
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