The URL can be used to link to this page

Browse Search

Home My WebLink About851164.tiff SSINS No. : 6835 IN 85-48 UNITED STATES pttp C11rrri' NUCLEAR REGULATORY COMMISSION r-'rr � OFFICE OF INSPECTION AND ENFORCEMENT ` �i� -'.Lk \ WASHINGTON, D.C. 20555 Nig2 i "I9 I June 19, 1985 GREELLY. COLO. IE INFORMATION NOTICE NO. 85-48: RESPIRATOR USERS NOTICE: DEFECTIVE SELF- CONTAINED BREATHING APPARATUS AIR CYLINDERS Addressees: All nuclear power reactor facilities holding an operating license (OL) or a construction permit (CP) , research and test reactor licensees, fuel cycle licensees, and Priority 1 material licensees. Purpose: This information notice is to alert licensees of two recent "Respirator Users Notices" issued by the Department of Health and Human Services (HHS) , concern- ing a serious defect in self-contained breathing apparatus (SCBA) . This updates information previously provided in Information Notice 84-34. It is expected that licensees will review the information for applicability to their facilities and consider actions, if appropriate, to preclude use of a poten- tially defective respirator. However, suggestions contained in this notice do not constitute NRC requirements; therefore, no specific action or response is required. Description of Circumstances: Information Notice 84-34, issued on April 23, 1984, discussed a serious safety defect in SCBA hoop-wrapped aluminum air cylinders rated at 4500 psi and manufactured under the Department of Transportation (DOT) Exemption DOT-E-7235. Appropriate warning notices from DOT, HHS, Scott Aviation and Survivair were included. On November 20, 1984, HHS issued a Respirator Users Notice announcing the recall of a product manufactured by Luxfer USA, Ltd. (Attachment 1) . On May 7, 1985, HHS issued another Respirator Users Notice on the same subject which also described a reported explosion (Attachment 2) . Evidently not all end-users of the affected Luxfer SCBA cylinders have respond- ed to the manufacturer's product recall . The reported catastrophic cylinder failures have demonstrated an extreme personnel hazard. In the interest of safety for workers , licensees may wish to share this information with other potential users , such as local fire departments, along with checking their own cylinders . 8506140636 851164 ljC IN 85-48 June 19, 1985 Page 2 of 2 No specific action or written response is required by this information notice. If you have any questions about this matter, please contact Luxfer USA, Ltd. or the Regional Administrator of the appropriate NRC regional office or this office. IJorEt%sion of Emergency Preparedness and Engineering Response Office of Inspection and Enforcement Technical Contacts: J. E. Wigginton, IE (301) 492-4967 R. L. Pedersen, IE (301) 492-9475 Attachments: 1. Respirator Users Notice (November 20, 1984) 2. Respirator Users Notice (May 7, 1985) 3. List of Recently Issued IE Information Notices Attachment I IN 85-48 1 DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service June 19, 1985 Pagel oft Centers for Disease Control National-Institute for Occupational Safety and Health —ALOSH 944 Chestnut Ridge Road Morgantown,WV 26505-2888 November 20, 1984 RESPIRATOR USERS NOTICE 4500—psi Hoop—wrapped Aluminum Cylinders Manufactured by Luxfer USA Ltd., 1995 Third Street, Riverside, CA 92507 The National Institute for Occupational Safety and Health (NIOSH) issued a Respirator Users Warning on July 21, 1983, and a Respirator Users Notice on February 29, 1984, concerning reported ruptures of certain 4500-psi/DOT-E 7235 hoop-wrapped aluminum cylinders manufactured by Luxfer USA Ltd. Users were advised by NIOSH of a reduction in service pressure to 4000 psi, announced by the Department of Transportation (DOT), to prevent further ruptures. Users were also advised that the reduced pressure necessitated a temporary reduction in service time of Mine Safety and Health Administration (MSHA)/NIOSH-certified breathing apparatus incorporating those cylinders, from 30 minutes to not more than 25 minutes. A recall for examination of all such cylinders manufactured prior to May, 1981, was announced by Luxfer. NIOSH advised manufacturers of breathing apparatus incorporating those cylinders, of the status of corrective action by Luxfer, on April 16, and August 6, 1984. DOT announced in the Federal Register of November 1, 1984, that Luxfer will retrofit each 4500—psi/DOT—E 7235 hoop—wrapped aluminum cylinder, with a steel neck ring, designed to prevent cylinder rupture. DOT has accepted this ring as a corrective action and will permit cylinders fitted with this ring to be pressurized to 4500 psi. Luxfer has advised NIOSH that retrofit facilities have been established which have been identified to DOT and to which users need to return Luxfer 4500-psi/DOT-E 7235 hoop-wrapped aluminum cylinders for addition of the steel neck ring. These facilities will accept cylinders for retrofitting, without charge to the user, until June 1, 1985. After that date, cylinders must be returned to Luxfer USA Ltd., at Riverside, CA, and a charge will be made for retrofitting cylinders with the steel neck ring. Luxfer is contacting cylinder users with scheduling information for the retrofit of their 4500-psi/DOT-E 7235 hoop-wrapped aluminum cylinders. Users who are not contacted by December 31, - 1984, are urged to write or call Luxfer USA Ltd., 1995 Third Street, Riverside, CA 92507 (714-684-5110), and arrange for cylinder retrofitting. Attachment 1 IN 85-48 • June 19, 1985 Page 2 of 2 Page 2—Users Notice Until cylinders are retrofitted, the maximum pressure of 4,000 psi and the temporary rated service time of not more than 25 minutes will remain in effect. After September 1, 1985, only those self—contained breathing apparatus incorporating 4500-psi/DOT-E7235 hoop-wrapped aluminum cylinders, which have such cylinders retrofitted with a steel neck ring by an authorized retrofit facility, will be considered to be certified by MSHA/NIOSH. After cylinder retrofitting, the rated service time for these MSHA/NIOSH-approved self-contained breathing apparatus will return to the original 30 minutes. ikanic÷-4.1c1/4— John B. Moran Director Division of Safety Research Changes and corrections in NAMES AND ADDRESSES OF PERSONS WHO ARE RESPONSIBLE FOR INVESTIGATION OF PROBLEMS WITH MSHA/NIOSH-APPROVED RESPIRATORS Page One: Change Glendale Opeical Co. to Glendale Optical Co. Page Two: Delete Mr. Ben Huey, Rexnord Safety Products, 45 Great Valley Parkway, Malvern, PA 19355. Add Mr. John Moffa, Rexnord, 45 Great Valley Parkway, Malvern, PA 19355. Attachment 2 IN 85-48 June 19, 1985 "`+++ DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service Centers for Disease Control National Institute for Occupational Safety and Health — ALOSH 944 Chestnut Ridge Road Morgantown,WV 26505-2888 May 7, 1985 RESPIRATOR USERS NOTICE Addition of Steel Neck Ring to 4500-psi Hoop-wrapped Aluminum Cylinders Manufactured by Luxfer USA Ltd. The National Institute for Occupational Safety and Health (NIOSH) issued a Respirator Users Notice on November 20, 1984, advising users of self- contained breathing apparatus which incorporate 4500-psi/DOT-E 7235 hoop- wrapped aluminum cylinders, of the need to return those cylinders to Luxfer for installation of a steel neck ring. That ring is designed to prevent the possibility of sudden rupture of the cylinder when it is pressurized to 4500 psi. It is urgent, to prevent such rupture from occurring, that every 4500-psi/ DOT-E 7235 cylinder in use or being stored for future use, be fitted with this ring. Hydrostatic test stations may not accept unfitted cylinders for hydrostatic testing. The cylinder without a neck ring cannot be used as part of an MSHA/NIOSH-approved self-contained breathing apparatus after September 1, 1985. Do not pressurize a 4500-psi/DOT-E 7235 cylinder above 4000 psi until after the neck ring is installed. . If you have, or are aware of, the location of any 4500-psi/DOT-E 7235 hoop wrapped aluminum cylinders, manufactured by Luxfer USA Ltd. , that have not been fitted with a steel neck ring, you should immediately contact Luxfer and obtain information on installation of that ring. Write or call Luxfer USA, Ltd. , 1995 Third Street, Riverside, CA 92507, (714) 684-5110. ohn B. Moran / Director Division of Safety Research May 8, 1985 NI0SH has been advised that a Luxfer 4500-psi DOT-E 7235 cylinder ruptured on May 6, 1935, while being charged to 2 ,000 psi. The cylinder was being charged in a water bath. No one was injured, but . the cylinder head was found 6 blocks away and the cylinder body was found 2 blocks away from the charging station. This cylinder was one of those recalled by Luxfer in July, 19S3 (Serial Nos. -3160 t. WA 50178 and '7.P 20312 to WP 21548) . It was not returned for replacement, nor was it fitted with a steel neck ring. IiI Attachment 3 IN 85-48 June 19, 1985 LIST OF RECENTLY ISSUED IE INFORMATION NOTICES Information Date of Notice No. Subject Issue Issued to 85-47 Potential Effect Of Line- 6/18/85 All power reactor Induced Vibration On Certain facilities holding Target Rock Solenoid-Operated an OL or CP Valves 85-46 Clarification Of Several 6/10/85 All power reactor Aspects Of Removable Radio- facilities holding active Surface Contamination an OL Limits For Transport Packages 85-45 Potential Seismic Interaction 6/6/85 All power reactor Involving The Movable In-Core facilities holding Flux Mapping System Used In an OL or CP Westinghouse Designed Plants 85-44 Emergency Communication 5/30/85 All power reactor System Monthly Test facilities holding an OL 85-43 Radiography Events At Power 5/30/85 All power reactor Reactors facilities holding an OL or CP 85-42 Loose Phosphor In Panasonic 5/29/85 All power reactor 800 Series Badge Thermo- facilities holding luminescent Dosimeter (TLD) an OL or CP Elements 85-41 Scheduling Of Pre-Licensing 5/24/85 All power reactor Emergency Preparedness facilities holding Exercises a CP 85-40 Deficiencies In Equipment 5/22/85 All power reactor Qualification Testing And facilities holding Certification Process an OL or CP 85-39 Auditability of Electrical 5/22/85 All power reactor Equipment Qualification facilities holding Records At Licensees ' an OL or CP Facilities OL = Operating License CP = Constructior Permit SSINS No. : 6835 IN 85-47 UNITED STATES r3 NUCLEAR REGULATORY COMMISSION U ( (L OFFICE OF INSPECTION AND ENFORCEMENT 6 WASHINGTON, D. C. 20555 ! 3UN2 7i.„ N:) ,t ,i June 18, 1985 OREELL f. COLLL IE INFORMATION NOTICE NO. 85-47: POTENTIAL EFFECT OF LINE-INDUCED VIBRATION ON CERTAIN TARGET ROCK SOLENOID-OPERATED VALVES Addressees: All nuclear power reactor facilities holding an operating license (OL) or a construction permit (CP) . Purpose: This information notice is to alert addressees that certain models of target Rock (TR) solenoid-operated valves have failed during environmental qualification testing. The analysis of the test failure suggests that line vibration induced by hydrodynamic force in piping and other forms of mechanical vibration may cause the loosening of the solenoid holddown nut of those TR solenoid valves with design features similar to TR valve models that were tested. Because of the potential safety significance of line-induced and other vibra- tions on TR solenoid operated valves , it is suggested that recipients review this information for applicability to their facilities and consider actions, if appropriate, to preclude a similar problem occurring at their facilities. Suggestions contained in this notice do not constitute NRC requirements; therefore, no specific action or written response is required. Description of Circumstances: On November 14, 1984, Arizona Public Services Company provided the NRC with a final report on a 10 CFR 50.55(e) reportable condition relating to qualification testing of certain TR solenoid-operated valves. Four TR valves , procured by Combustion Engineering (CE) for use at Palo Verde Nuclear Generating Station Unit 3, were tested to the requirements of NUREG-0588, Category I . Test valves included two 1-inch TR valves , model 77L-001 and two 2-inch TR valves, model 77L-003. The qualification test involved irradiation to 50 megarads, thermal aging at 260°F for 635 hours , mechanical cycling, vibrational aging to represent normal service vibration, seismic testing, and finally, testing in a simulated LOCA environment. The licensee reported that during the qualification testing, a number of anomalies were identified, and the test was discontinued when the test valves failed to function for different reasons during the seismic testing. CE and TR appraised the overall safety significance of the observed test anomalies for the licensee. They considered the failure of the valve to open on demand as a result of solenoid lead shorting caused by line-induced vibrational 8506140240 IN 85-47 June 18, 1985 Page 2 of 3 wear to be a common mode of failure that, in a seismic event, could potentially disable several redundant valves at the same time. This failure of the valve to open on demand is the only observed test anomaly considered to have significant generic safety implications and is the subject of this information notice. The root cause of the valve failure to open is attributable to the mechanism used to secure the solenoid to the upper works assembly of the valve. The valves used at Palo Verde have a jam nut and a lock washer that are used together to secure the solenoid. If the upper works assembly is rotated during valve handling or installation, the jam nut can become loose, allowing axial rotation of the coil . As a corrective action, the licensee has stated in its latest report to the NRC that existing TR valves Models 77L-0001 and 77L-003 are being upgraded. The upgrading includes a complete factory refurbishment of the valves with potting of the coil into the solenoid housing. The potting will prevent differential movement between the coil and housing to preclude lead wire abrasion during line-induced vibration. Target Rock Corporation also has reported that the following TR valve models and plants may be affected by line-induced vibration: Valve Models Power Plants 72A-001/002/003/004/005/007 Monticello Nuclear Power Plant 72V-001 Duane Arnold Energy Center 73E-002 Trojan Nuclear Plant 75G-002/003/008/009/013 San Onofre Nuclear Generating Station 75GG-001 Grand Gulf Nuclear Station 75KK-204/207 Susquehanna Steam Electric Station 76B-002/024/039/040/041/042/043/044 Midland TR has made the recommendation to the NRC that the utilities for the above listed power plants consider performing a review of safety-related systems that incorporate the above listed solenoid valves to determine if solenoid locking devices are installed on their valves. TR recommends that locking devices for the listed valves be installed per TR Service Bulletin 8302 (attached) , if they have not already been installed and the potential for line-induced vibration exists. (Note: the locking device of Service Bulletin 8302 is different from the potting mechanism used for the Palo Verde solenoids. ) IN 85-47 June 18, 1985 Page 3 of 3 No specific action or written response is required by this information notice. If you have any questions regarding this matter, please contact the Regional Administrator of the appropriate NRC regional office or this office. 4Lt2rector on of Emergency Preparedness and Engineering Response Office of Inspection and Enforcement Technical Contact: N. B. Le, NRR (301) 492-9686 G. Hubbard, IE (301) 492-9759 Attachments: 1. Target Rock Service Bulletin 8302 2. List of Recently Issued IE Information Notices • Attachment 1 IN 85-47 June 18, 1985. s . s . 8302 e Date : 4-6-83 R IPRODUCT IMPROVEMENT SOLENOID OPERATED VALVES ALL MODELS WITH UNPOTTED SOLENOIDS ADDING SOLENOID ASSEMBLY INSULATING WASHERS B1. GENERAL INFORMATION. A. Description. This Service Bulletin provides a method for checking axial travel of the solenoid assembly and, if ■ found, to obtain the parts necessary to eliminate it. 3. Effectivity. The work called for by this Service Bulletin is applicable to all Solenoid Operated Valves with unpotted Esolenoids. T C. Reason. To eliminate the possibility of axial travel of the solenoid coil inside the solenoid housing on unpotted solenoid ' assemblies. D. Compliance . It is recommended that the work outlined herein be accomplished while the Solenoid Operated Valve is in storage or when the system is off-line as between fuel loadings. E. Material. A modification kit is .needed to perform the requirements of this Service Bulletin. This kit will contain the :arts and instructions necessary to perform this procedure. Contact the Field Service Department, Target Rock, for kit information and detailed instructions. Written by: _`_. 4 Ddte': } - L.. H. c ulman ethnical Writer Approved by: Date: r—/3 - f3 D. M. Pa -arini, Vice Pres. , Encineering TRPUB-0038(3/83) Target Rock --1 Target Rock Corporation. 1966E ®roadhollow Road, East Farmingdale. New York 11735 PREPARED BY TARGET ROCK CORPORATION PAGE 2 OP 2 DATE EAST FARMINGDALE LONG ISLAND, N. Y. REPORT APPROVED BY S.B. 8302 PROJECT .-� DATE Attachment 1 IN 85-47 F. Special Tools. None required. June 18, 1985 References. Engineering investigations and field service recommendations. H. Publications Affected. This Service Bulletin shall become a part of and be filed with the applicable Technical manual(s) . Reference to this Service Bulletin shall be made when ordering spares. 2 . INSTRUCTIONS. A. Inspect the Solenoid Operated Valve for axial travel as follows: (1) Provide an axial lifting force of 50 to 100 bounds to the solenoid housing. Check to see if the solenoid housing moves. Movement of the solenoid housing indicates axial travel of the solenoid coil inside the housing. (2) If axial travel is evident, obtain a modification kit and perform the procedure contained in the instructions included with the kit . B. It is recommended that a modification kit be kept on hand. Additional modification kits can be obtained, as required, from the Target Rock Corporation, Field Service Department. Field service assistance may be obtained from the Target Rock Corporation at current rates. TII[NO 104(3/St) Attachment 2 IN 85-47 June 18, 1985 LIST OF RECENTLY ISSUED IE INFORMATION NOTICES Information Date of Notice No. Subject Issue Issued to 85-46 Clarification Of Several 6/10/85 All power reactor Aspects Of Removable Radio- facilities holding active Surface Contamination an OL Limits For Transport Packages 85-45 Potential Seismic Interaction 6/6/85 All power reactor Involving The Movable In-Core facilities holding Flux Mapping System Used In an OL or CP Westinghouse Designed Plants 85-44 Emergency Communication 5/30/85 All power reactor System Monthly Test facilities holding an OL 85-43 Radiography Events At Power 5/30/85 All power reactor Reactors facilities holding an OL or CP 85-42 Loose Phosphor In Panasonic 5/29/85 All power reactor 800 Series Badge Thermo- facilities holding luminescent Dosimeter (TLD) an OL or CP Elements 85-41 Scheduling Of Pre-Licensing 5/24/85 All power reactor Emergency Preparedness facilities holding Exercises a CP 85-40 Deficiencies In Equipment 5/22/85 All power reactor Qualification Testing And facilities holding Certification Process an OL or CP 85-39 Auditability of Electrical 5/22/85 All power reactor Equipment Qualification facilities holding Records At Licensees ' an OL or CP Facilities 85-38 Loose Parts Obstruct Control 5/21/85 All PWR facilities Rod Drive Mechanism designed by B&W holding an OL or CP OL = Operating License CP = Construction Permit Hello