View source for Information Notice 1990-18, Potential Problems With Crosby Safety Relief Valves Used on Diesel Generator Air Start Receiver Tanks

{{Adams
| number = ML031140248
| issue date = 03/09/1990
| title = Potential Problems With Crosby Safety Relief Valves Used on Diesel Generator Air Start Receiver Tanks
| author name = Rossi C E
| author affiliation = NRC/NRR
| addressee name = 
| addressee affiliation = 
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| license number = 
| contact person = 
| document report number = IN-90-018, NUDOCS 9003050043
| document type = NRC Information Notice
| page count = 5
| revision = 0
}}
{{#Wiki_filter:UNITED STATESNUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR REACTOR REGULATIONWASHINGTON, D.C. 20555March 9. 1990NRC INFORMATION NOTICE NO. 90-18: POTENTIAL PROBLEMS WITH CROSBY SAFETYRELIEF VALVES USED ON DIESEL GENERATORAIR START RECEIVER TANKS

==Addressees==
:All holders of operating licenses or construction permits for nuclear powerreactors.

==Purpose==
:This information notice is intended to alert addressees to potential problemswith Crosby safety relief valves that could result in a loss of starting'altto the emergency diesel generators (EDGs). It is expected that'recipientswill review the information for applicability to their facilities and consideractions, as appropriate, to avoid similar problems. However, suggestionscontained in this Information notice do not constitute NRC requirements'therefore, no specific action or written response is required.

==Description of Circumstances==
:On March 13, 1989, Cooper Industries was made aware of circumstances at PerryUnit 1 that led to the Division I EDG being declared inoperable. A Crosbysafety relief valve on'one of the two EDG starting air receiving tanks wasinadvertently hit during maintenance activities. The force of the impactcaused the valve to open and blow down both air receiving tanks. The safetyrelief valve did not reseat until approximately 30 psig below the EDG automaticstart lockout signal. On January 12, 1990, Cooper Industries learned that asimilar event had occurred at Comanche Peak. On January 17, 1990, CooperIndustries'submitted a 10 CFR Part 21 report on the affected safety reliefvalves (Crosby style JMBU and JRU safety relief valves).Discussion of Safety Significance:Although Crosby-style JMBU and JRU safety relief valves were designed to meetthe requirements of Section VIII of the ASME Boiler and Pressure Vessel Code,they were not seismically qualified. In addition, the blowdown characteristicsof the valves were not consistent with the functional requirements of thesystem in which they were installed. Cooper Industries has recommended re-placing these valves with seismically-qualified valves that have the properblowdown reseat characteristics.9003043 Z. A IN 90-18
* i,.March 9, 1990 All licensees with Transamerica Delaval Inc. (TDI) diesel generators werenotified of this problem by Cooper Industries via the Part 21 notification.However, Crosby safety relief valves (style JMBU, JRU, and possibly non-codestyle JMB) may be installed on EDGs manufactured by other vendors. Licenseesmay wish to verify that the relief valves installed in their EDG air startsystems have appropriate qualifications and characteristics.This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contact thetechnical contact listed below or the appropriate NRR project manager.'ar es E. Rossi, a ectorDivision of Operational Events AssessmentOffice of Nuclear Reactor Regulation

===Technical Contact:===
John Thompson, NRR(301) 492-1175

===Attachment:===

===List of Recently Issued NRC Information Notices ===
.1 .AttachmentIN 90-18March 9, 1990 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICESInformation Date otNotice No. Subject Issuance Issued to90-1789-59,Supp. 290-1690-1590-14_90-1390-1290-1190-1090-09Weight and Center ofGravity Discrepanciesfor Copes-Vulcan ValvesSuppliers of PotentiallyMisrepresented FastenersCompliance with NewDecommissioning RuleReciprocity: Notificationof Agreement State RadiationControl Directors BeforeBeginning Work in AgreementStatesAccidental Disposal ofRadioactive MaterialsImportance of Review andAnalysis of SafeguardsEvent LogsMonitoring or Interruptionof Plant CommunicationsMaintenance DeficiencyAssociated with Solenoid-Operated Valves3/8/903/7/903/7/903/7/903L61903/5/902/28/902/28/90All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All materials licensees.All holders of NRCmaterials licenseswhich authorize useof radioactivematerial at temporaryjob sites.All U.S. NRC byproductmaterial licensees.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for PWRs.All holders of NRCmaterials licenses.Primary Water Stress 2/23/90Corrosion Cracking (PWSCC)of Inconel 600Extended Interim Storage ofLow-Level Radioactive Wasteby Fuel Cycle and MaterialsLicensees2/5/90OL = Operating LicenseCP = Construction Permit IN 90-18March 9, 1990 All licensees with Transamerica Delaval Inc. (TD) diesel generators werenotified of this problem by Cooper Industries via the Part 21 notification.However, Crosby safety relief valves (style JMBU, JRU, and possibly non-codestyle JMB) may be installed on EDGs manufactured by other vendors. Licenseesmay wish to verify that the relief valves installed in their EDG air startsystems have appropriate qualifications and characteristics.This Information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contact thetechnical contact listed below or the appropriate NRR project manager.Charles E. Rossi, DirectorDivision of Operational Events AssessmentOffice of Nuclear Reactor Regulation

===Technical Contact:===
John Thompson, NRR(301) 492-1175

===Attachment:===
List of Recently Issued NRC Information NoticesDocument Name: NRC INFORMATION NOTICE*SEE PREVIOUS PAGE FOR CONCURRENCEWg' kOJD /90*C/OGCB:DOEA:NRRCBerlinger03/02/90*EAB:DOEA:NRRJThompson:fh02/28/90*SC/EAB:DOEA:NRRDFischer02/28/90*AC/OEAB:DOEA:NRR*RPB:ADMPBaranowsky TechEd02/28/90 02/28/90 IN 90-XXMarch xx, 1990 All licensees with Transamerica Delaval Inc. (TDI) diesel generators werenotified of this problem by Cooper Industries via the Part 21 notification.However, Crosby safety relief valves (style JMBU, JRU, and possibly non-codestyle JMB) may be installed on EDMs manufactured by other vendors. Licenseesmay wish to verify that the relief valves installed in their EDG air startsystems have appropriate qualifications and characteristics.This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contact thetechnical contact listed below or the appropriate NRR project manager.Charles E. Rossi, DirectorDivision of Operational Events AssessmentOffice of Nuclear Reactor Regulation

===Technical Contact:===
John Thompson, NRR(301) 492-1175

===Attachment:===
List of Recently Issued NRC Information NoticesDocument Name:NRC INFORMATION NOTICEEABW :NRRJTh Aj3son:fh02r/2/90XAB:DOEA:NRRDFischer02/R2 /90AC/OEAB:DOEA:NRRPBaranowsky02/2X /90D/DOEA:NRRCERossi02/ /90C/OGCB:DOE :NRiCBerling03p0290}}

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