NRC Generic Letter 1980-31
| ML031350358 | |
| Person / Time | |
|---|---|
| Issue date: | 04/17/1980 |
| From: | Grier B NRC Region 1 |
| To: | |
| References | |
| BL-80-009 GL-80-031, NUDOCS 8005080028 | |
| Download: ML031350358 (5) | |
Gs> RCt2s UNITED STATES
NUCLEAR REGULATORY COMMISSION
0 REGION I 80@00800;0j
631 PARK AVENUE
KING OF PRUSSIA, PENNSYLVANIA 19406 April 17, 1980
Docket Nos. 50-03
50-247 Consolidated Edison Company of New York, Inc.
ATTN: Mr. W. J. Cahill, Jr.
Vice President
4 Irving Place New York, New York 10003 Gentlemen:
The enclosed IE Bulletin No. 80-09, "Hydramotor Actuator Deficiencies," is forwarded to you for action. A written response is required. If you desire additional information regarding this matter, please contact the Office of Inspection and Enforcement, Washington, D.C.
Sincerely, Boyce H. Grier Director Enclosures:
1. IE Bulletin No. 80-09 with Attachment
2. List of Recently Issued IE Bulletins
CONTACT
- W. Laudan
(301-492-7551)
cc w/encls:
L. 0. Brooks, Project Manager, IP Nuclear W. Monti, Manager - Nuclear Power Generation Department M. Shatkouski, Plant Manager J. M. Makepeace, Director, Technical Engineering W. D. Hamlin, Assistant to Resident Manager J. 0. Block, Esquire, Executive Vice President - Administration Joyce P. Davis, Esquire
ENCLOSURE 1 SSINS No. 6820
UNITED STATES Accession No.:
NUCLEAR REGULATORY COMMISSION 8002280659 OFFICE OF INSPECTION AND ENFORCEMENT
WASHINGTON, D.C. 20555 IE Bulletin No. 80-09 Date: April 17, 1980 HYDRAMOTOR ACTUATOR DEFICIENCIES
ITT General Controls (ITT-GC) reported to the NRC two (2) problem areas pertain- ing to their Models AH-90 and NH-90 Series Hydramotor Actuators. The NH-90
designators depicts nuclear class 1E design. Either of the problems reported could affect the operation of safety-related equipment installed in nuclear power facilities:
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 Attach- ment No. 1. Since some of the Original Equipment Manufacturers (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:
Enclosure 1 IE Bulletin No: 80-09 Date: April 17, 1980 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.
Attachment
Attachment to IE Bulletin 80-09 Attachment No. 1 Customers Quantities ACDC Inc, Cincinnati, OH 27 American Warming & Ventilating Co., Inc.
Maumee, OH 145 Copes Vulcan, Inc.
Lake City, PA 2 Fisher Controls Co., Inc.
Marshalltown, IA 38 Fisher Controls Co., Inc.
Corapolis, PA 4 General Signal Corporation West Warwick, RI 2 ITT Hammel-Dahl Warwick, RI 4 Joy Manufacturing New Philadelphia, OH 18 Masoneilan International, Inc.
Norwood, MA 10
Pacific Air Products Santa Ana, CA 16 Posi Seal International, Inc.
No. Stonington, CT 14 Powers Regulator Co.
Portland, OR 1 Powers Regulator Co.
Skokie, IL 74 Ruskin Manufacturing Co.
Grandview, MO 4 Valtek, Inc.
Springville, UT 9 TOTAL 368
e.
ENCLOSURE 2 IE Bulletin No. 80-09 Date: April 17, 1980 RECENTLY ISSUED IE BULLETINS
Bulletin Subject Date Issued Issued To No.
80-02 Inadequate Quality 1/21/80 All BWRs with an Assurance for Nuclear Operating License Supplied Equipment (OL) or Construction Permit (CP)
80-03 Loss of Charcoal From I
2/6/80 All Power Reactor Standard Type II, 2 Inch, Facilities with an Tray Adsorber Cells OL or CP
80-04 Analysis of a PWR Main 2/8/80 All Power Reactor Steam Line Break with Facilities with an Continued Feedwater Ad- OL or CP
dition
79-01B Environmental Quali- 2/29/80 All Power Reactors fication of Class IE with an OL except Equipment SEP Plants
80-05 Vacuum Conditions 3/10/80 All PWR Power Reactor Resulting in Damage to Facilities with an Chemical Volume Control OL or CP
System (CVCS) Holdup Tanks
80-06 Engineered Safety 3/13/80 All Power Reactor Feature (ESF) Reset Facilities with an Controls OL (For Action)
All Power Reactor Facilities with a CP
(For Information)79-03A Longitudinal Weld 4/4/80 All Power Reactor Defects in ASME Facilities with an SA-312, Type 304 OL or CP
Stainless Steel Pipe
80-07 BWR Jet Pump Assembly 4/4/80 BWR 3 & 4's with OL
Failure (For Action)
BWR's with CP (For Information)
80-08 Examination of Con- 4/7/80 All Power Reactor tainment Liner Facilities with an Penetration Welds OL or CP