Traceability and Material Control of Material and Equipment, Particularly FastenersML031220652 |
Person / Time |
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Site: |
Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, 05000000, Zimmer, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant, Skagit, Marble Hill |
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Issue date: |
04/11/1986 |
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From: |
Jordan E NRC/IE |
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To: |
|
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References |
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IN-86-025, NUDOCS 8604090451 |
Download: ML031220652 (6) |
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Similar Documents at Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, 05000000, Zimmer, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant, Skagit, Marble Hill |
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Category:NRC Information Notice
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Mclaughlin on NRC, Regarding NRC Information Notice 2006-13: Groundwater Contamination 2020-09-03 The following query condition could not be considered due to this wiki's restrictions on query size or depth: <code> [[:Beaver Valley]] OR [[:Millstone]] OR [[:Hatch]] OR [[:Monticello]] OR [[:Calvert Cliffs]] OR [[:Dresden]] OR [[:Davis Besse]] OR [[:Peach Bottom]] OR [[:Browns Ferry]] OR [[:Salem]] OR [[:Oconee]] OR [[:Mcguire]] OR [[:Nine Mile Point]] OR [[:Palisades]] OR [[:Palo Verde]] OR [[:Perry]] OR [[:Indian Point]] OR [[:Fermi]] OR [[:Kewaunee]] OR [[:Catawba]] OR [[:Harris]] OR [[:Wolf Creek]] OR [[:Saint Lucie]] OR [[:Point Beach]] OR [[:Oyster Creek]] OR [[:Watts Bar]] OR [[:Hope Creek]] OR [[:Grand Gulf]] OR [[:Cooper]] OR [[:Sequoyah]] OR [[:Byron]] OR [[:Pilgrim]] OR [[:Arkansas Nuclear]] OR [[:Three Mile Island]] OR [[:Braidwood]] OR [[:Susquehanna]] OR [[:Summer]] OR [[:Prairie Island]] OR [[:Columbia]] OR [[:Seabrook]] OR [[:Brunswick]] OR [[:Surry]] OR [[:Limerick]] OR [[:North Anna]] OR [[:Turkey Point]] OR [[:River Bend]] OR [[:Vermont Yankee]] OR [[:Crystal River]] OR [[:Haddam Neck]] OR [[:Ginna]] OR [[:Diablo Canyon]] OR [[:Callaway]] OR [[:Vogtle]] OR [[:Waterford]] OR [[:Duane Arnold]] OR [[:Farley]] OR [[:Robinson]] OR [[:Clinton]] OR [[:South Texas]] OR [[:San Onofre]] OR [[:Cook]] OR [[:Comanche Peak]] OR [[:Yankee Rowe]] OR [[:Maine Yankee]] OR [[:Quad Cities]] OR [[:Humboldt Bay]] OR [[:La Crosse]] OR [[:Big Rock Point]] OR [[:Rancho Seco]] OR [[:Zion]] OR [[:Midland]] OR [[:Bellefonte]] OR [[:Fort Calhoun]] OR [[:FitzPatrick]] OR [[:McGuire]] OR [[:LaSalle]] OR [[:05000000]] OR [[:Zimmer]] OR [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] OR [[:Skagit]] OR [[:Marble Hill]] </code>.
[Table view]The following query condition could not be considered due to this wiki's restrictions on query size or depth: <code> [[:Beaver Valley]] OR [[:Millstone]] OR [[:Hatch]] OR [[:Monticello]] OR [[:Calvert Cliffs]] OR [[:Dresden]] OR [[:Davis Besse]] OR [[:Peach Bottom]] OR [[:Browns Ferry]] OR [[:Salem]] OR [[:Oconee]] OR [[:Mcguire]] OR [[:Nine Mile Point]] OR [[:Palisades]] OR [[:Palo Verde]] OR [[:Perry]] OR [[:Indian Point]] OR [[:Fermi]] OR [[:Kewaunee]] OR [[:Catawba]] OR [[:Harris]] OR [[:Wolf Creek]] OR [[:Saint Lucie]] OR [[:Point Beach]] OR [[:Oyster Creek]] OR [[:Watts Bar]] OR [[:Hope Creek]] OR [[:Grand Gulf]] OR [[:Cooper]] OR [[:Sequoyah]] OR [[:Byron]] OR [[:Pilgrim]] OR [[:Arkansas Nuclear]] OR [[:Three Mile Island]] OR [[:Braidwood]] OR [[:Susquehanna]] OR [[:Summer]] OR [[:Prairie Island]] OR [[:Columbia]] OR [[:Seabrook]] OR [[:Brunswick]] OR [[:Surry]] OR [[:Limerick]] OR [[:North Anna]] OR [[:Turkey Point]] OR [[:River Bend]] OR [[:Vermont Yankee]] OR [[:Crystal River]] OR [[:Haddam Neck]] OR [[:Ginna]] OR [[:Diablo Canyon]] OR [[:Callaway]] OR [[:Vogtle]] OR [[:Waterford]] OR [[:Duane Arnold]] OR [[:Farley]] OR [[:Robinson]] OR [[:Clinton]] OR [[:South Texas]] OR [[:San Onofre]] OR [[:Cook]] OR [[:Comanche Peak]] OR [[:Yankee Rowe]] OR [[:Maine Yankee]] OR [[:Quad Cities]] OR [[:Humboldt Bay]] OR [[:La Crosse]] OR [[:Big Rock Point]] OR [[:Rancho Seco]] OR [[:Zion]] OR [[:Midland]] OR [[:Bellefonte]] OR [[:Fort Calhoun]] OR [[:FitzPatrick]] OR [[:McGuire]] OR [[:LaSalle]] OR [[:05000000]] OR [[:Zimmer]] OR [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] OR [[:Skagit]] OR [[:Marble Hill]] </code>. |
US melkal SSINS No.:
IN 86-25
6835 UNITED STATES
NUCLEAR REGULATORY COMMISSION
OFFICE OF INSPECTION AND ENFORCEMENT
WASHINGTON, D.C. 20555 April 11, 1986 IE INFORMATION NOTICE NO. 86-25: TRACEABILITY AND MATERIAL CONTROL OF MATERIAL
AND EQUIPMENT, PARTICULARLY FASTENERS
Addressees
All nuclear power reactor facilities holding a construction permit (CP) or an
operating license (OL).
Purpose
This notice is provided to alert recipients of potentially significant problems
identified during NRC Construction Appraisal Team (CAT) inspections of licensee
programs for the inspection of material and equipment, particularly fasteners, to prevent the use of incorrect or defective materials, parts and components.
4It is expected that the recipients will review the information for applicability
to their facilities and consider actions, if appropriate,-to preclude similar
problems from occurring at their facilities. However, suggestions contained
in this notice do not constitute NRC requirements; therefore, no specific
action or written response is required. -
Description of Circumstances
During NRC CAT inspections conducted since 1982,.deficiencies in material
traceability and control of fasteners were identified at 11 sites. This raised
questions regarding the adequacy of controls to prevent the use of incorrect or
defective fastener materials. A brief summary of findings for each site is
attached. See Attachment 1.
Discussion
The deficiencies in material traceability and control of fasteners identified
at 11 sites mentioned above were attributed to ineffective site inspection
programs and vendor surveillance activities by the licensees. Deficiencies were
found in fasteners for large vendor-supplied mechanical and electrical equipment
(e.g., pump-motor assemblies mounted-on skids) and in bolting for battery racks
and electrical equipment cabinets at many sites. These and other deficiencies
are described in Attachment 1.
Because fastener deficiencies, if uncorrected, could adversely affect opera- tional safety and/or safety in case of seismic events, recipients of this
notice should review the information presented to avoid similar deficiencies
at their facilities.
8604090451
-' IN 86-25 April 11, 1986 It is important that particular attention be given to licensee programs for "-
ensuring the traceability of material and equipment and to prevent the use of
incorrect or defective materials, parts and components. It is important that
the licensee be aware of 10 CFR 50, Appendix B, Criterion VIII - Identification
and Control of Materials, Parts and Components and applicable codes and speci- fications and that measures have been established and implemented for identifi- cation and control of materials, parts and components and for traceability both
to the approved design basis and to the source. It is important that required
identification of the item is maintained by heat number, part number, serial
number, or other appropriate means, either on the item or on records traceable
to the item as required, and that required markings are on the item.
The licensee has the responsibility to use qualified individuals to examine
markings on material and equipment and verify that the markings represent
material and equipment as specified by the design drawings and specifications.
In the case of fasteners, compliance with the applicable material specification
(e.g., ASTM or ASME material and grade) is verified by required markings on
bolts and nuts and certified material test reports or certificates of con- formance as required by the applicable procurement drawings and specifications
and/or by the applicable codes and specifications. In the case of vendor- supplied equipment assemblies containing fasteners, it is important to verify
compliance with approved vendor drawings and specifications and other
information such as materials used for equipment qualification tests and/or
analyses. It is important that caution be exercised to ensure that the
required markings on material and equipment, including fasteners, not only
exist but that the markings indicate the correct material and grade as
specified.
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.
4w 4 Jordan, Director
Divisio of Emergency Preparedness
and Engineering-Response
Office of Inspection and Enforcement
Technical Contact:
Henry Phillips, IE
(301) 492-4531 Attachments:
1. Summary of Deficiencies Found During
NRC CAT Inspections at Various Sites
2. List of Recently Issued IE Information Notices
Attachment 1 IN 86-25 April 11, 1986 SUMMARY OF DEFICIENCIES FOUND DURING
NRC CAT INSPECTIONS AT VARIOUS SITES
South Texas Project Units 1 and 2
During the NRC CAT inspection conducted at the South Texas Project in October
and November 1985, lack of traceability was found for fastener materials for
certain vendor-supplied large mechanical equipment assemblies mounted on skids
and for certain electrical equipment. It also was found that engineering had
deleted the requirement of the specified national standard for manufacturers
marking of fasteners intended for electrical cable tray and conduit supports, which contributed to the resulting uncertainty of fastener control and trace- ability during and after installation. For details refer to Construction
Appraisal Team Inspection Report 50-498/85-21 and 50-499/85-19.
Byron Unit 2 Station
During the NRC CAT inspection conducted at the Byron Unit 2 Station in August
and September 1985, significant lack of traceability was found for fastener
materials, including assembly and mounting bolts for large vendor-supplied
pumps/motors; bolts for battery racks, electrical switchgear and other equipment;
and bolts attaching heating, ventilation, and air conditioning (HVAC) duct
sections. For details refer to Construction Appraisal Team Inspection
Report 50-455/85-27.
Clinton Power Station
During the NRC CAT inspection conducted at the Clinton Power Station in May
and June 1985, lack of traceability was found for some vendor-supplied fastener
materials, including bolts for large pump-motor and skid-mounted pump-turbine
assemblies, and mounting bolts for HVAC control cabinets. For details refer
to Construction Appraisal Team Inspection Report 50-461/85-30.
Millstone Unit 3
During the NRC CAT inspection conducted at the Millstone Unit 3 site in
February and Mdrch 1985, significant lack of traceability was found for vendor- supplied fastener materials, including bolts for mounting large pump motors, bolts for battery racks, and bolts for interconnecting adjacent motor control
center cabinets. For details refer to Construction Appraisal Team Inspection
Report 50-423/85-04.
Attachment 1 IN 86-25 April 11, 1986 Shearon Harris Unit 1 During the NRC CAT inspection conducted at the Shearon Harris Unit 1 site in
October and November 1984, problems were identified regarding traceability of
fastener materials, including large embedded anchor bolts and equipment mounting
bolts and nuts. It was noted that both the applicant and the NRC Region II
had previously identified such deficiencies and corrective actions were in
progress by the applicant. For details refer to Construction Appraisal Team
Inspection Report 50-400/84-41.
River Bend Unit 1 During the NRC CAT inspection conducted at the River Send Unit 1 site in July
and August 1984, deficiencies were found in material traceability and control
of some safety-related fasteners, piping flange components, and environmental
control of weld filler material storage ovens. Also, work or rework of some
flange joints was being accomplished without QC or engineering knowledge or
concurrence, which also resulted in a loss of material control. For details
refer to Construction Appraisal Team Inspection Report 50-458/84-23.
Seabrook Station
During the NRC CAT inspection conducted at the Seabrook Station in April and
May 1984, problems were identified regarding traceability of embedded anchor
bolt/nut assemblies, equipment mounting bolts and nuts, flange fasteners and
the use of indeterminate fastening materials in seismic bolting applications.
For details refer to Construction Appraisal Team Inspection Report 50-443/84-07.
Waterford Steam Electric Station Unit 3
During the NRC CAT inspection conducted at the Waterford Steam Electric Station
Unit 3 in February and March 1984, traceability deficiencies were found for
such fastener items as embedded anchor bolts; equipment mounting bolts/studs, nuts and washers; and flange joint studs and nuts. For details refer to
Construction Appraisal Team Inspection Report 50-382/84-07.
Nine Mile Point Station Unit 2
During the NRC CAT inspection conducted at the Nine Mile Point Station Unit 2 in November and December 1983, material traceability deficiencies were found
for ASME III Class 1 linear NF hanger parts for the reactor coolant recircula- tion system, and a number of examples of deficiencies in material control for
safety-related fasteners and unused weld material were found in the plant.
For details refer to Construction Appraisal Team Inspection Report 50-410/83-18.
Attachment 1 IN 86-25 April 11, 1986 Perry Nuclear Power Plant Units 1 and 2 During the NRC CAT inspection conducted at the Perry Nuclear Power Plant
Units 1 and 2 in August and September 1983, deficiencies were found in
traceability and material control for fasteners and small components. For
details refer to Construction Appraisal Team Inspection Report 50-440/83-31,
50-441/83-30.
Washington Nuclear Plant Number 2 (WNP-2)
During the NRC CAT inspection conducted at WNP-2 in May and June 1983, problems
were identified in the area of fastener traceability. Specifically, improper
or uncontrolled material substitutions were noted with respect to fastener
quality on pipe flanges, valve bonnets, mechanical connections, and pump couplings.
For details refer to Construction Appraisal Inspection Report 50-397/83-29.
Attachment 2 IN 86-24 April 11, 1986 LIST OF RECENTLY ISSUED
IE INFORMATION NOTICES
Information Date of
Notice No. Subject Issue Issued to
86-24 Respirator Users Notice: 4/11/86 All power reactor
Increased Inspection Frequency facilities holding
For Certain Self-Contained an OL or CP; research
Breathing Apparatus Air and test reactor
Cylinders facilities; fuel
cycle licensees and
Priority 1 material
licensees
86-23 Excessive Skin Exposures Due 4/9/86 All power reactor
To Contamination With Hot facilities holding
Particles an OL or CP
86-22 Underresponse Of Radition 3/31/86 All power reactor
Survey Instrument To High facilities holding
Radiation Fields an OL or CP and
research and test
reactors
86-?1 Recognition Of American 3/31/86 All power reactor
Society Of Mechanical facilities holding
Engineers Accreditation an OL or CP and all
Program For N Stamp Holders recipients of NUREG-
0040 (white book)
86-20 Low-Level Radioactive Waste 3/28/86 All power reactor
Scaling Factors, 10 CFR facilities holding
Part 61 an OL or CP
86-19 Peactor Coolant Pump Shaft 3/21/86 All power reactor
Failure At Crystal River facilities holding
an OL or CP
86-18 NRC On-Scene Response During 3/26/86 All power reactor
A Major Emergency facilities holding
an OL or CP
86-17 Update Of Failure Of Auto- 3/24/86 All power reactor
matic Sprinkler System Valves facilities holding
To Operate an OL or CP
OL = Operating License
CP = Construction Permit
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list | - Information Notice 1986-01, Failure of Main Feedwater Check Valves Causes Loss of Feedwater System Integrity and Water-Hammer Damage (6 January 1986)
- Information Notice 1986-02, Failure of Valve Operator Motor During Environmental Qualification Testing (6 January 1986)
- Information Notice 1986-03, Potential Deficiencies in Enviromental Qualification of Limitorque Motor Valve Operator Wiring (14 January 1986)
- Information Notice 1986-04, Transient Due to Loss of Power to Intergrated Control System at a Pressurized Water Reactor Designed by Babcock & Wilcox (31 January 1986)
- Information Notice 1986-05, Main Steam Safety Valve Test Failures and Ring Setting Adjustments (31 January 1986)
- Information Notice 1986-06, Failure of Lifting Rig Attachment, While Lifting Upper Guide Structure at St. Lucie Unit 1 (3 February 1986, Topic: Control of Heavy Loads)
- Information Notice 1986-06, Failure of Lifting Rig Attachment, while Lifting Upper Guide Structure at St. Lucie Unit 1 (3 February 1986)
- Information Notice 1986-07, Lack of Detailed Instruction & Inadequate Observance of Precautions During Maintenance & Testing of Diesel Generator Woodward Governors (3 February 1986)
- Information Notice 1986-08, Licensee Event Report (LER) Format Modification (3 February 1986)
- Information Notice 1986-09, Failure of Check & Stop Check Valves Subjected to Low Flow Conditions (3 February 1986)
- Information Notice 1986-10, Degradation of Reactor Coolant System Pressure Boundary Resulting From Boric Acid Corrosion. (5 January 1995, Topic: Boric Acid)
- Information Notice 1986-10, Feedwater Line Break (10 November 1988, Topic: Coatings, Anchor Darling)
- Information Notice 1986-10, Degradation of Reactor Coolant System Pressure Boundary Resulting from Boric Acid Corrosion. (5 January 1995, Topic: Boric Acid)
- Information Notice 1986-11, Anomalous Behavior of Recirculation Loop Flow in Jet Pump BWR Plants (31 December 1986)
- Information Notice 1986-13, Standby Liquid Control System Squib Valves Failure to Fire (21 February 1986, Topic: Squib)
- Information Notice 1986-13, Standby Liquid Control Squib Valves Failure to Fire (5 August 1986, Topic: Squib)
- Information Notice 1986-14, Overspeed Trips of AFW, HPCI & RCIC Turbines (26 August 1991, Topic: Fire Barrier)
- Information Notice 1986-14, Overspeed Trips of Afw, HPCI & RCIC Turbines (26 August 1991)
- Information Notice 1986-15, Loss of Offsite Power Caused by Problems in Fiber Optics Systems (10 March 1986, Topic: Squib)
- Information Notice 1986-16, Failures to Identify Containment Leakage Due to Inadequate Local Testing of BWR Vacuum Relief System Valves (11 March 1986, Topic: Squib)
- Information Notice 1986-17, Update of Failure of Automatic Sprinkler System Valves to Operate (24 March 1986, Topic: Squib)
- Information Notice 1986-18, NRC On-Scene Response During a Major Emergency (26 March 1986, Topic: Squib, Backfit)
- Information Notice 1986-19, Reactor Coolant Pump Shaft Failure at Crystal River (21 March 1986, Topic: Squib)
- Information Notice 1986-20, Low-Level Radioactive Waste Scaling Factors, 10 CFR Part 61 (28 March 1986, Topic: Squib)
- Information Notice 1986-21, Recognition of American Society of Mechanical Engineers Accreditation Program for N Stamp Holders (31 March 1986, Topic: Squib)
- Information Notice 1986-22, Underresponse of Radiation Survey Instrument to High Radiation Fields (31 March 1986, Topic: High Radiation Area, Squib)
- Information Notice 1986-23, Excessive Skin Exposures Due to Contamination with Hot Particles (9 April 1986)
- Information Notice 1986-23, Excessive Skin Exposures due to Contamination with Hot Particles (9 April 1986)
- Information Notice 1986-24, Respirator Users Notice: Increased Inspection Frequency for Certain Self-Contained Breathing Apparatus Air Cylinders (11 April 1986, Topic: Hydrostatic)
- Information Notice 1986-25, Traceability and Material Control of Material and Equipment, Particularly Fasteners (11 April 1986)
- Information Notice 1986-26, Potential Problems in Generators Manufactured by Electrical Products Incorporated (17 April 1986)
- Information Notice 1986-27, Access Control at Nuclear Facilities (21 April 1986, Topic: Contraband)
- Information Notice 1986-28, Telephone Numbers to the NRC Operations Center and Regional Offices (24 April 1986)
- Information Notice 1986-29, Effects of Changing Valve Moter-Operator Switch Settings (25 April 1986)
- Information Notice 1986-30, Design Limitations of Gaseous Effluent Monitoring Systems (29 April 1986)
- Information Notice 1986-31, Unauthorized Transfer and Loss of Control of Industrial Nuclear Gauges (14 July 1986)
- Information Notice 1986-32, Request for Collection of Licensee Radioactivity Measurements Attributed to Chernobyl Nuclear Plant Accident (2 May 1986, Topic: Chernobyl)
- Information Notice 1986-33, Information for Licensee Regarding the Chernobyl Nuclear Plant Accident (6 May 1986, Topic: Chernobyl)
- Information Notice 1986-34, Improper Assembly, Material Selection, & Test of Valves & Their Actuators (13 May 1986)
- Information Notice 1986-34, Improper Assembly, Material Selection, & Test of Valves & their Actuators (13 May 1986)
- Information Notice 1986-35, Fire in Compressible Material at Dresden Unit 3 (15 May 1986, Topic: Chernobyl)
- Information Notice 1986-36, Change in NRC Practice Regarding Issuance of Confirming Letters to Principal Contractors (16 May 1986, Topic: Chernobyl)
- Information Notice 1986-37, Degradation of Station Batteries (16 May 1986, Topic: Chernobyl)
- Information Notice 1986-38, Deficient Operator Actions Following Dual Function Valve Failures (20 May 1986, Topic: Chernobyl)
- Information Notice 1986-39, Failures of RHR Pump Motors and Pump Internals (20 May 1986, Topic: Chernobyl)
- Information Notice 1986-40, Degraded Ability to Isolate the Reactor Coolant System from Low-Pressure Coolant Systems in Bwrs (5 June 1986, Topic: Chernobyl)
- Information Notice 1986-40, Degraded Ability to Isolate the Reactor Coolant System from Low-Pressure Coolant Systems in BWRs (5 June 1986, Topic: Chernobyl)
- Information Notice 1986-41, Evaluation of Questionable Exposure Readings of Licensee Personnel Dosimeters (9 June 1986, Topic: Chernobyl)
- Information Notice 1986-42, Improper Maintenance of Radiation Monitoring Systems (9 June 1986, Topic: Temporary Modification, Chernobyl)
- Information Notice 1986-43, Problems with Silver Zeolite Sampling of Airborne Radioiodine (10 June 1986, Topic: Chernobyl)
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