Information Notice 2001-10, Failure of Central Sprinkler Company'S Model Gb Series Fire Sprinkler Heads: Difference between revisions

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{{#Wiki_filter:UNITED STATESNUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR REACTOR REGULATIONWashington, D.C. 20555-0001June 28, 2001NRC INFORMATION NOTICE 2001-10:FAILURE OF CENTRAL SPRINKLER COMPANYMODEL GB SERIES FIRE SPRINKLER HEADS
[[Issue date::June 28, 2001]]
 
NRC INFORMATION NOTICE 2001-10:FAILURE OF CENTRAL SPRINKLER COMPANYMODEL GB SERIES FIRE SPRINKLER HEADS


==Addressees==
==Addressees==
Line 23: Line 20:


==Purpose==
==Purpose==
The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to warnaddressees that certain Model GB series sprinkler heads manufactured by Central Sprinkler Co. of Lansdale, Pennsylvania, have a potential for failur It is expected that recipients will review the information for applicability and consider actions, as appropriate, to ensure safety at their facilitie However, suggestions contained in this information notice are not NRC requirements; therefore, no specific action or written response is required.
The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to warnaddressees that certain Model GB series sprinkler heads manufactured by Central Sprinkler
 
Co. of Lansdale, Pennsylvania, have a potential for failure.  It is expected that recipients will
 
review the information for applicability and consider actions, as appropriate, to ensure safety at
 
their facilities.  However, suggestions contained in this information notice are not NRC
 
requirements; therefore, no specific action or written response is required.


==Description of Circumstances==
==Description of Circumstances==
On April 24, 2001, Underwriters Laboratories Inc. (UL) issued a news release on the failures of field samples of certain Model GB series sprinkler heads during operational testin UL tested over 1800 GB series heads from over 100 different locations and found that 26 percent of the sprinkler heads needed higher water pressure than the 5 psi required for UL listin Seven percent needed over 40 psi to operate and some did not operate at 60 ps This is of great concern because the sprinkler systems are relied upon to protect structures, systems, or components important to safety against fire.The sprinkler heads have O-ring water seals and were introduced in 198 The followingmodels are of concern: GB, GB-ALPHA, GB-J, GB-QR, GB-EC, GB-RS, GB-20, GB-20QR, GBR, GB-R1, GB-R2, GBR-LF, GB4, GB4-EC, GB4-FR, GB4-QREC, BB1, BB2, BB3, SD1, SD2, SD3, HIP, ROC, LF, and W Because of design changes, some of these models may have "O-ring" water seals and some may have disc spring water seal Only the sprinkler head models with the "O" ring seal are of concern, not the models with the disc spring water seals.
On April 24, 2001, Underwriters Laboratories Inc. (UL) issued a news release on the failures of field samples of certain Model GB series sprinkler heads during operational testing.  UL
 
tested over 1800 GB series heads from over 100 different locations and found that 26 percent
 
of the sprinkler heads needed higher water pressure than the 5 psi required for UL listing.
 
Seven percent needed over 40 psi to operate and some did not operate at 60 psi.  This is of
 
great concern because the sprinkler systems are relied upon to protect structures, systems, or
 
components important to safety against fire.The sprinkler heads have O-ring water seals and were introduced in 1988.  The followingmodels are of concern: GB, GB-ALPHA, GB-J, GB-QR, GB-EC, GB-RS, GB-20, GB-20QR,
GBR, GB-R1, GB-R2, GBR-LF, GB4, GB4-EC, GB4-FR, GB4-QREC, BB1, BB2, BB3, SD1, SD2, SD3, HIP, ROC, LF, and WS.  Because of design changes, some of these models may
 
have "O-ring" water seals and some may have disc spring water seals.  Only the sprinkler head
 
models with the "O" ring seal are of concern, not the models with the disc spring water seals.
 
UL's Web site at: www.ul.com/about/newsrel/nr042401.html has pictures and descriptions ofthe water seals of different models.Licensees who have GB series sprinkler heads installed in their facility may consider havingsome of the heads tested.  UL will test heads submitted at no additional cost beyond the
 
expense of removal, packaging, handling, and postage.  Instructions for selecting, removing, and packaging the heads can be obtained from Central Sprinkling Co. at 1-800-523-6512. Related Generic Communications!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22,1997This information notice requires no specific action or written response.  If you have anyquestions about the information in this notice, please contact one of the technical contacts
 
listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear
 
Material and Safeguards (NMSS) project manager./RA/J. Tappert for/RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch
 
and Non-Power Reactors BranchDivision of Fuel Cycle Safety
 
Division of Regulatory Improvement Programs  and Safeguards
 
Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety  and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB
 
(301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.govAttachments:1.List of Recently Issued NRC Information Notices
 
2.List of Recently Issued NMSS Information Notices Related Generic Communication!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22, 1997This information notice requires no specific action or written response.  If you have anyquestions about the information in this notice, please contact one of the technical contacts
 
listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear
 
Material and Safeguards (NMSS) project manager./RA/J. Tappert for  /RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch
 
and Non-Power Reactors BranchDivision of Fuel Cycle Safety
 
Division of Regulatory Improvement Programs  and Safeguards
 
Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety  and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB
 
(301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.govAttachments:1.List of Recently Issued NRC Information Notices
 
2.List of Recently Issued NMSS Information NoticesDistribution:IN Reading FilePUBLICADAMS ACCESSION NUMBER:ML011790352OFFICEREXB:Tech EditorDSSA:NMSSNMSSNMSSNAMECPetrone*PKleene*PLainEWeissPLeeLRocheDATE06/07/200106/13/2001    6/25/2001    6/28/2001    6/272001    6/272001NMSSREXBC:REXBMLeachJTappertLMarsh    6/28/2001    6/282001    6/28/2001OFFICIAL RECORD COPY
 
______________________________________________________________________________________OL = Operating License
 
CP = Construction PermitAttachment 1 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICES_____________________________________________________________________________________InformationDate of
 
Notice No.        SubjectIssuanceIssued to______________________________________________________________________________________2001-09Main Feedwater SystemDegradation in Safety-Related
 
===ASME Code Class 2 Piping===
Inside the Containment of a
 
Pressurized Water Reactor06/12/01All holders of operating licensesfor pressurized water nuclear
 
power reactors, except those who
 
have permanently ceased
 
operations and have certified that
 
fuel has been permanently
 
removed from the reactor vessel2001-08Supplement 1Update on the Investigation ofPatient Deaths in Panama,
 
===Following Radiation Therapy===
Overexposures06/06/01All Medical Licensees2001-08Treatment Planning SystemErrors Result in Deaths of
 
===Overseas Radiation Therapy===
Patients06/01/01All medical licensees2001-07Unescorted Access GrantedBased on Incomplete and/or
 
Inaccurate Information05/11/01All holders of nuclear reactoroperating licenses who are
 
subject to Section 73.56 of Title
 
10, of the Code of Federal
 
Regulations (10 CFR 73.56),
"Personnel Access Authorization
 
===Requirements of Nuclear Power===
Plants."2001-06Centrifugal Charging PumpThrust Bearing Damage not
 
===Detected Due to Inadequate===
Assessment of Oil Analysis
 
===Results and Selection of Pump===
Surveillance Points05/11/01All holders of operating licensesfor nuclear power reactors, except those who have
 
permanently ceased operations
 
and have certified that fuel has
 
been permanently removed from
 
the reactor vessel2001-05Through-Wall CircumferentialCracking of Reactor Pressure
 
===Vessel Head Control Rod Drive===
Mechanism Penetration


UL's Web site at: www.ul.com/about/newsrel/nr042401.html has pictures and descriptions ofthe water seals of different models.Licensees who have GB series sprinkler heads installed in their facility may consider havingsome of the heads teste UL will test heads submitted at no additional cost beyond the expense of removal, packaging, handling, and postag Instructions for selecting, removing, and packaging the heads can be obtained from Central Sprinkling Co. at 1-800-523-6512. Related Generic Communications!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22,1997This information notice requires no specific action or written respons If you have anyquestions about the information in this notice, please contact one of the technical contacts listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear Material and Safeguards (NMSS) project manager./RA/J. Tappert for/RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch and Non-Power Reactors BranchDivision of Fuel Cycle Safety Division of Regulatory Improvement Programs and Safeguards Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB (301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.gov
===Nozzles at Oconee Nuclear===
Station, Unit 304/30/01All holders of operating licensesfor pressurized water nuclear


===Attachments:===
power reactors except those who
1.List of Recently Issued NRC Information Notices 2.List of Recently Issued NMSS Information Notices Related Generic Communication!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22, 1997This information notice requires no specific action or written respons If you have anyquestions about the information in this notice, please contact one of the technical contacts listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear Material and Safeguards (NMSS) project manager./RA/J. Tappert for /RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch and Non-Power Reactors BranchDivision of Fuel Cycle Safety Division of Regulatory Improvement Programs and Safeguards Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB (301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.gov


===Attachments:===
have ceased operations and have
1.List of Recently Issued NRC Information Notices 2.List of Recently Issued NMSS Information NoticesDistribution:IN Reading FilePUBLICADAMS ACCESSION NUMBER:ML011790352OFFICEREXB:Tech EditorDSSA:NMSSNMSSNMSSNAMECPetrone*PKleene*PLainEWeissPLeeLRocheDATE06/07/200106/13/2001 6/25/2001 6/28/2001 6/272001 6/272001NMSSREXBC:REXBMLeachJTappertLMarsh 6/28/2001 6/282001 6/28/2001OFFICIAL RECORD COPY


______________________________________________________________________________________OL = Operating License CP = Construction PermitAttachment 1 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICES_____________________________________________________________________________________InformationDate of Notice N SubjectIssuanceIssued to______________________________________________________________________________________2001-09Main Feedwater SystemDegradation in Safety-Related ASME Code Class 2 Piping Inside the Containment of a Pressurized Water Reactor06/12/01All holders of operating licensesfor pressurized water nuclear power reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel2001-08Supplement 1Update on the Investigation ofPatient Deaths in Panama, Following Radiation Therapy Overexposures06/06/01All Medical Licensees2001-08Treatment Planning SystemErrors Result in Deaths of Overseas Radiation Therapy Patients06/01/01All medical licensees2001-07Unescorted Access GrantedBased on Incomplete and/or Inaccurate Information05/11/01All holders of nuclear reactoroperating licenses who are subject to Section 73.56 of Title 10, of the Code of Federal Regulations (10 CFR 73.56),
certified that fuel has been
"Personnel Access Authorization Requirements of Nuclear Power Plants."2001-06Centrifugal Charging PumpThrust Bearing Damage not Detected Due to Inadequate Assessment of Oil Analysis Results and Selection of Pump Surveillance Points05/11/01All holders of operating licensesfor nuclear power reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel2001-05Through-Wall CircumferentialCracking of Reactor Pressure Vessel Head Control Rod Drive Mechanism Penetration Nozzles at Oconee Nuclear Station, Unit 304/30/01All holders of operating licensesfor pressurized water nuclear power reactors except those who have ceased operations and have certified that fuel has been permanently removed from the reactor vessel Attachment 2 LIST OF RECENTLY ISSUEDNMSS INFORMATION NOTICES_____________________________________________________________________________________InformationDate of Notice N SubjectIssuanceIssued to


_____________________________________________________________________________________2001-08, Supplement 1Update on the Investigation ofPatient Deaths in Panama, Following Radiation Therapy Overexposures06/06/01All medical licensees.2001-08Treatment Planning SystemErrors Result in Deaths of Overseas Radiation Therapy Patients06/01/01All medical licensees.2001-03Incident ReportingRequirements for Radiography Licensees04/06/01All industrial radiographylicensees.2001-01The Importance of AccurateInventory Controls to Prevent the Unauthorized Possession of Radioactive Material03/26/01All material licensees.2000-22Medical MisadministrationsCaused by Human Errors Involving Gamma Stereotactic Radiosurgery (GAMMA KNIFE)12/18/00All medical use licenseesauthorized to conduct gamma stereotactic radiosurgery treatments.2000-19Implementation of Human UseResearch Protocols Involving U.S. Nuclear Regulatory Commission Regulated Materials12/05/2000All medical use licensees.2000-18Substandard Material Suppliedby Chicago Bullet Proof Systems11/29/2000All 10 CFR Part 50 licensees andapplicants.
permanently removed from the
 
reactor vessel
 
Attachment 2 LIST OF RECENTLY ISSUEDNMSS INFORMATION NOTICES_____________________________________________________________________________________InformationDate of
 
===Notice No.        SubjectIssuanceIssued to===
_____________________________________________________________________________________2001-08, Supplement 1Update on the Investigation ofPatient Deaths in Panama,
 
===Following Radiation Therapy===
Overexposures06/06/01All medical licensees.2001-08Treatment Planning SystemErrors Result in Deaths of
 
===Overseas Radiation Therapy===
Patients06/01/01All medical licensees.2001-03Incident ReportingRequirements for Radiography
 
Licensees04/06/01All industrial radiographylicensees.2001-01The Importance of AccurateInventory Controls to Prevent
 
the Unauthorized Possession
 
of Radioactive Material03/26/01All material licensees.2000-22Medical MisadministrationsCaused by Human Errors
 
===Involving Gamma Stereotactic===
Radiosurgery (GAMMA KNIFE)12/18/00All medical use licenseesauthorized to conduct gamma
 
stereotactic radiosurgery
 
treatments.2000-19Implementation of Human UseResearch Protocols Involving
 
===U.S. Nuclear Regulatory===
Commission Regulated
 
Materials12/05/2000All medical use licensees.2000-18Substandard Material Suppliedby Chicago Bullet Proof
 
Systems11/29/2000All 10 CFR Part 50 licensees andapplicants.


All category 1 fuel facilities.
All category 1 fuel facilities.


All 10 CFR Part 72 licensees and applicants.2000-16Potential Hazards Due toVolatilization of Radionuclides10/5/2000All licensees that processunsealed byproduct material.2000-15Recent Events Resulting inWhole Body Exposures Exceeding Regulatory Limits9/29/2000All radiography licensees.}}
===All 10 CFR Part 72 licensees and===
applicants.2000-16Potential Hazards Due toVolatilization of Radionuclides10/5/2000All licensees that processunsealed byproduct material.2000-15Recent Events Resulting inWhole Body Exposures
 
Exceeding Regulatory Limits9/29/2000All radiography licensees.
 
}}


{{Information notice-Nav}}
{{Information notice-Nav}}

Revision as of 19:39, 6 April 2018

Failure of Central Sprinkler Company'S Model Gb Series Fire Sprinkler Heads
ML011790352
Person / Time
Issue date: 06/28/2001
From: Leach M N, Marsh L B
NRC/NMSS/FCSS/FCLB, Division of Regulatory Improvement Programs
To:
References
IN-01-010
Download: ML011790352 (7)
v • d • e


UNITED STATESNUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR REACTOR REGULATIONWashington, D.C. 20555-0001June 28, 2001NRC INFORMATION NOTICE 2001-10:FAILURE OF CENTRAL SPRINKLER COMPANYMODEL GB SERIES FIRE SPRINKLER HEADS

Addressees

All holders of licenses for nuclear power, research, and test reactors and fuel cycle facilities.

Purpose

The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to warnaddressees that certain Model GB series sprinkler heads manufactured by Central Sprinkler

Co. of Lansdale, Pennsylvania, have a potential for failure. It is expected that recipients will

review the information for applicability and consider actions, as appropriate, to ensure safety at

their facilities. However, suggestions contained in this information notice are not NRC

requirements; therefore, no specific action or written response is required.

Description of Circumstances

On April 24, 2001, Underwriters Laboratories Inc. (UL) issued a news release on the failures of field samples of certain Model GB series sprinkler heads during operational testing. UL

tested over 1800 GB series heads from over 100 different locations and found that 26 percent

of the sprinkler heads needed higher water pressure than the 5 psi required for UL listing.

Seven percent needed over 40 psi to operate and some did not operate at 60 psi. This is of

great concern because the sprinkler systems are relied upon to protect structures, systems, or

components important to safety against fire.The sprinkler heads have O-ring water seals and were introduced in 1988. The followingmodels are of concern: GB, GB-ALPHA, GB-J, GB-QR, GB-EC, GB-RS, GB-20, GB-20QR,

GBR, GB-R1, GB-R2, GBR-LF, GB4, GB4-EC, GB4-FR, GB4-QREC, BB1, BB2, BB3, SD1, SD2, SD3, HIP, ROC, LF, and WS. Because of design changes, some of these models may

have "O-ring" water seals and some may have disc spring water seals. Only the sprinkler head

models with the "O" ring seal are of concern, not the models with the disc spring water seals.

UL's Web site at: www.ul.com/about/newsrel/nr042401.html has pictures and descriptions ofthe water seals of different models.Licensees who have GB series sprinkler heads installed in their facility may consider havingsome of the heads tested. UL will test heads submitted at no additional cost beyond the

expense of removal, packaging, handling, and postage. Instructions for selecting, removing, and packaging the heads can be obtained from Central Sprinkling Co. at 1-800-523-6512. Related Generic Communications!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22,1997This information notice requires no specific action or written response. If you have anyquestions about the information in this notice, please contact one of the technical contacts

listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear

Material and Safeguards (NMSS) project manager./RA/J. Tappert for/RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch

and Non-Power Reactors BranchDivision of Fuel Cycle Safety

Division of Regulatory Improvement Programs and Safeguards

Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB

(301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.govAttachments:1.List of Recently Issued NRC Information Notices

2.List of Recently Issued NMSS Information Notices Related Generic Communication!IN 99-28, "Recall of Star Brand Fire Protection Sprinkler Heads," September 30, 1999!IN 97-72, "Potential for Failure of the Omega Series Sprinkler Heads," September 22, 1997This information notice requires no specific action or written response. If you have anyquestions about the information in this notice, please contact one of the technical contacts

listed below or the appropriate Office of Nuclear Reactor Regulation (NRR) or Office of Nuclear

Material and Safeguards (NMSS) project manager./RA/J. Tappert for /RA/L. Roche forLedyard B. Marsh, ChiefMelvyn N. Leach, Acting ChiefEvents Assessment, Generic CommunicationsFuel Cycle Licensing Branch

and Non-Power Reactors BranchDivision of Fuel Cycle Safety

Division of Regulatory Improvement Programs and Safeguards

Office of Nuclear Reactor RegulationOffice of Nuclear Material Safety and SafeguardsTechnical Contacts:Paul LainPeter LeeNRR/DSSA/SPLBNMSS/FCSS/FCLB

(301) 415-2346(301) 415-8111 E-Mail: pwl@nrc.govE-mail: psl1@nrc.govAttachments:1.List of Recently Issued NRC Information Notices

2.List of Recently Issued NMSS Information NoticesDistribution:IN Reading FilePUBLICADAMS ACCESSION NUMBER:ML011790352OFFICEREXB:Tech EditorDSSA:NMSSNMSSNMSSNAMECPetrone*PKleene*PLainEWeissPLeeLRocheDATE06/07/200106/13/2001 6/25/2001 6/28/2001 6/272001 6/272001NMSSREXBC:REXBMLeachJTappertLMarsh 6/28/2001 6/282001 6/28/2001OFFICIAL RECORD COPY

______________________________________________________________________________________OL = Operating License

CP = Construction PermitAttachment 1 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICES_____________________________________________________________________________________InformationDate of

Notice No. SubjectIssuanceIssued to______________________________________________________________________________________2001-09Main Feedwater SystemDegradation in Safety-Related

ASME Code Class 2 Piping

Inside the Containment of a

Pressurized Water Reactor06/12/01All holders of operating licensesfor pressurized water nuclear

power reactors, except those who

have permanently ceased

operations and have certified that

fuel has been permanently

removed from the reactor vessel2001-08Supplement 1Update on the Investigation ofPatient Deaths in Panama,

Following Radiation Therapy

Overexposures06/06/01All Medical Licensees2001-08Treatment Planning SystemErrors Result in Deaths of

Overseas Radiation Therapy

Patients06/01/01All medical licensees2001-07Unescorted Access GrantedBased on Incomplete and/or

Inaccurate Information05/11/01All holders of nuclear reactoroperating licenses who are

subject to Section 73.56 of Title

10, of the Code of Federal

Regulations (10 CFR 73.56),

"Personnel Access Authorization

Requirements of Nuclear Power

Plants."2001-06Centrifugal Charging PumpThrust Bearing Damage not

Detected Due to Inadequate

Assessment of Oil Analysis

Results and Selection of Pump

Surveillance Points05/11/01All holders of operating licensesfor nuclear power reactors, except those who have

permanently ceased operations

and have certified that fuel has

been permanently removed from

the reactor vessel2001-05Through-Wall CircumferentialCracking of Reactor Pressure

Vessel Head Control Rod Drive

Mechanism Penetration

Nozzles at Oconee Nuclear

Station, Unit 304/30/01All holders of operating licensesfor pressurized water nuclear

power reactors except those who

have ceased operations and have

certified that fuel has been

permanently removed from the

reactor vessel

Attachment 2 LIST OF RECENTLY ISSUEDNMSS INFORMATION NOTICES_____________________________________________________________________________________InformationDate of

Notice No. SubjectIssuanceIssued to

_____________________________________________________________________________________2001-08, Supplement 1Update on the Investigation ofPatient Deaths in Panama,

Following Radiation Therapy

Overexposures06/06/01All medical licensees.2001-08Treatment Planning SystemErrors Result in Deaths of

Overseas Radiation Therapy

Patients06/01/01All medical licensees.2001-03Incident ReportingRequirements for Radiography

Licensees04/06/01All industrial radiographylicensees.2001-01The Importance of AccurateInventory Controls to Prevent

the Unauthorized Possession

of Radioactive Material03/26/01All material licensees.2000-22Medical MisadministrationsCaused by Human Errors

Involving Gamma Stereotactic

Radiosurgery (GAMMA KNIFE)12/18/00All medical use licenseesauthorized to conduct gamma

stereotactic radiosurgery

treatments.2000-19Implementation of Human UseResearch Protocols Involving

U.S. Nuclear Regulatory

Commission Regulated

Materials12/05/2000All medical use licensees.2000-18Substandard Material Suppliedby Chicago Bullet Proof

Systems11/29/2000All 10 CFR Part 50 licensees andapplicants.

All category 1 fuel facilities.

All 10 CFR Part 72 licensees and

applicants.2000-16Potential Hazards Due toVolatilization of Radionuclides10/5/2000All licensees that processunsealed byproduct material.2000-15Recent Events Resulting inWhole Body Exposures

Exceeding Regulatory Limits9/29/2000All radiography licensees.


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