Single Failures in Auxiliary Feedwater SystemsML031130543 |
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: |
07/24/1987 |
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From: |
Rossi C Office of Nuclear Reactor Regulation |
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To: |
|
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References |
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IN-87-034, NUDOCS 8707210011 |
Download: ML031130543 (8) |
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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 Contamination2006-07-13013 July 2006 E-mail from M. 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>. |
C.-
SSINS No.: 6835 IN 87-34 UNITED STATES
NUCLEAR REGULATORY COMMISSION
OFFICE OF NUCLEAR REACTOR REGULATION
WASHINGTON, D.C. 20555 July 24, 1987 NRC INFORMATION NOTICE NO. 87-34: SINGLE FAILURES IN AUXILIARY FEEDWATER
SYSTEMS
Addressees
All holders of an operating license or a construction permit for pressurized
water reactor facilities.
Purpose
This information notice is being provided to alert addressees to potential
single failures of auxiliary feedwater pump start and protective pump trip
circuitry that could cause partial or complete loss of capability to supply
auxiliary feedwater (AFW) in conflict with the design basis. It is expected
that recipients will review the information for applicability to their facili- ties and consider actions, if appropriate, to avoid similar problems. However, suggestions contained in this information notice do not constitute NRC require- ments; therefore, no specific action or written response is required.
Description of Circumstances
On April 30, 1987, the licensee for the Indian Point Unit 2 nuclear power plant
identified a potential single failure in a portion of the pump start circuitry
that is common to both motor-driven auxiliary feedwater pumps and that could
prevent both pumps from starting automatically in the event of either low-low
steam generator level or loss of main feedwater. Such a single failure is in
conflict with the design basis for the system.
This problem was discovered in the course of a review of the auxiliary
'feedwater system being conducted by the licensee as followup to a number
of operational events that occurred in the fall of 1986.
The pump start circuitry at Indian Point Unit 2 was designed so that the steam
generator level and loss of feedwater start'signals were routed through con- tacts of the safety injection inhibit relays. The purpose of these relays is
to delay pump starts under safety injection conditions until the safety injec- tion sequencer calls for the pumps to start at the appropriate tine. If the
contacts of either inhibit relay failed in the open position, neither the low
steam generator level nor the loss of feedwater start signals would cause the
7 zA
87710011 )-1 Ic.
/Y~es .S£S
IN 87-34 July 24, 1987 motor-driven pumps to start automatically. Both inhibit relays are normally
deenergized and closed. Therefore, for the contact to fail in the
a failure in which the relay remains energized or in which the relayopen position, sticks open
following actuation would have to occur.
Discussion:
When the potential single failure was identified, the licensee entered a
72-hour action statement, as required by the Technical Specification Limiting
Conditions for Operation. Within the 72-hour period, the licensee completed a
design modification to provide independent inhibit relays for the two
motor-driven auxiliary feedwater pumps, which satisfied the single-failure
criterion.
Subsequent to the design deficiency determination at Unit 2, a review was
conducted at Indian Point Unit 3. The licensee at that unit determined that
although the pump start circuitry at Unit 3 was in fact different from that of
Unit 2, it also failed to satisfy the single-failure criterion. The
motor-driven auxiliary feedwater pump start logic circuitry at Indian Point
Unit 3 incorporates a pump start (delay) relay that responds to either a main
feedwater pump trip or low-low steam generator level signal. Processing of
either signal requires the operability of this relay, which is common
motor-driven auxiliary feedwater pump start logic circuits. Failure ofto this
both
relay could similarly prevent both pumps from starting automatically. Unit 3 is-currently shutdow--fdr refueTing and corrective actlons are still being
planned.
Previous Similar Occurrence
On March 7, 1985, the licensee for the Salem Generating Station Units 1 and 2 reported (LER 50-272/85-01) to the NRC that the auxiliary feedwater pump (AFP)
trip circu itry did not meet the single-failure criterion. The licensee discov- ered this iln an ongoing review of design changes in which the AFP circuitry
modified to provide protection of all three AFPs in the event of a loss of was
water supply resulting from tornado damage to the auxiliary feedwater storage
tank. The licensee's review of this trip circuitry revealed several potential
single failures that could stem from a single test switch circuit, a single
suction pressure instrument, and a single low suction pressure trip output
relay. Failure of any one of these protective features could have resulted in
tripping all three AFPs. The licensee immediately took interim corrective
actions to eliminate the potential single failure vulnerabilities.
the licensee modified the low suction pressure pump trip circuitry toSubsequently, provide
the protective feature without the potential for a single failure causing a
loss of all AFW.
These conditions serve to highlight the potentially generic aspects of single- failure vulnerabilities in the automatic start and pump protection logic
arrangements for auxiliary feedwater pumps.
IN 87-34 July 24, 1987. This information notice requires no specific action or written response. If
you have questions about this matter, please contact the Regional Administrator
of the appropriate NRC regional office or this office.
harles E. Rossi, Dtrecto
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contacts: R. Gallo, RI
(215) 337-5225 Samuel D. MacKay, NRR
(301) 492-8394 Attachment: List of Recently Issued Information Notices
Attachrent 1
"'_IN 87-34 July 24, 1987 LIST OF RECENTLY ISSUED
I. INFORMATION NOTICES 1987 or
unte or
Information Date
Notice No. Subject Issuance Issued to
87-33 Applicability of 10 CFR 7/24/87 All NRClicensees.
Part ?I to Nonlicensees
.87-32 Deficiencies In the Testing 7/10/87 All nuclear power
of Nuclear-Grade Activated reactor facilities
Charcoal; holding an OL or CP.
87-31 Rlocking, Bracing, and 7/10/87 All NRClicensees.
Securing of Radioactive
Materials Packages In
Transportation.
87-30 Cracking of Surge Ring 7/2/87 All nuclear power
Brackets In Large General reactor facilities
Electric Comoany Electric holding ar OL or CrP.
Motors.
87-29 Recent Safety-Related 6/26/87 All NRClicensees
Tncidents at Large authorized to possess
Irradiators. and use sealed sources
in large irradiators.
87-28 Air Systews Problems at 6/22/87 All nuclear power
U.S. Light Water Reactors. reactor facilities
holding an OL or CP.
87-27 Iranian Official Implies 6/10/87 All nuclear power
Vague Threat to U.S. reactor facilities
Resources. holding an OL or CP.
research and nonpower
reactor facilities.
and fuel fabrication
and processing
facilities using or
possessing formula
quantities of special
nuclear material.
87-26 Cracks In Stiffening Rings 6/11/87 All uranium fuel
o- -- ow-484nch Diametwer-Fg- - $ -- _ _ a m .- - __
Cylinders, conversion facilities.
OL
CP
UNITED STATES
NUCLEAR REGULATORY COMMISSION FIRST CLA SS MWAIL
WASHINGTON, D.C. 20555 POSTAGE
USNRC
WASH. O.C.
OFFICIAL BUSINESS PERMITNo. eG
PENALTY FOR PRIVATE USE. U300
J
IN 87-34 July 24, 1987 This information notice requires no specific action or written response. If
you have questions about this matter, please contact the Regional Administrator
of the appropriate NRC regional office or this office.
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contacts: R. Gallo, RI
(215) 337-5225 Samuel D. MacKay, NRR
(301) 492-8394 Attachment: List of Recently Issued Information Notices
- SEE PREVIOUS PAGE FOR CONCURRENCE
- C/OGCB:DOEA:NRR *PPMB:ARM *OGCB:DOEA:NRR
C/Rosssi CHBerlinger TechEd SMacKay
07f2//87 07/10/87 06/11/87 06/17/87
Norrholm Gallo Collins Kane
07/10/87 07/10/87 07/10/87 07/10/87
IN 87-XX
July xx, 1987 This information notice requires no specific action or written response. If
you have questions about this matter, please contact the Regional Administrator
of the appropriate NRC regional office or this office.
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contacts: R. Gallo, RI
(215) 337-5225 Samuel D. MacKay, NRR
(301) 492-8394 Attachment: List of Recently Issued Information Notices
C/OGCB:DOEA:NRR *PPMB:ARM *OGCB:DOEA:NRR
CHBerlinger TechEd SMacKay
07/JO/87 06/11/87 06/g7/87 £
RI 3 g4n; RI y V )4 RI I
Gallo Collis 7 1 Kane
07//0/87 07//10/87 A 07//1/87 Lfix 07//0/87
IN 87-XX
June xx, 1987 No specific action or written response is required by this information notice.
If you have questions about this matter, please contact the Regional Adminis- trator of the appropriate NRC regional office or this office.
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contacts: R. Gallo, RI
(215) 337-5225 Samuel D. MacKay, NRR
(301) 492-8394 Attachment: List of Recently Issued Information Notices
D/DOEA:NRR C/OGCB:DOEA:NRR PPMBB:ARn OGCB:DOEA:NRR
CERossi
06/ /87 CHBerlinger
06/ /87 TechEd
06/11/87
4 SMacKay 153Fj14
06/8 /87 RI SEfv., RI RI RI
Norrholm Gallo Collins Kane
06/oS/87 06/ /87 06/ /87 06/ /87
-Br Ptle
If
IN 87-XX
June xx, 1987 This information notice requires no specific action or written response. If
you have questions about this matter, please contact the Regional Administrator
of the appropriate NRC regional office or this office.
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contacts: R. Gallo, RI
(215) 337-5225 Samuel D. MacKay, NRR
(301) 492-8394 Attachment: List of Recently Issued Information Notices
D/DOEA:NRR C/OGCB:DOEA:NRR PPMB:ARM * 0GCB:DOEA-NRR
CERossi CHBerlinger TechEd SMacKay -57N
06/ /87 06/ /87 06/1,V/87 06//17/87 RI RI RI RI
Norrholm Gallo Collins Kane
06/ /87 06/ /87 06/ /87 06/ /87
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list | - Information Notice 1987-02, Inadequate Seismic Qualification of Diaphragm Valves by Mathematical Modeling and Analysis (13 January 1987, Topic: Boric Acid, Overspeed trip)
- Information Notice 1987-03, Segregation of Hazardous and Low-Level Radioactive Wastes (15 January 1987, Topic: Boric Acid, Overspeed trip)
- Information Notice 1987-04, Diesel Generator Fails Test Because of Degraded Fuel (16 January 1987, Topic: Boric Acid, Coatings)
- Information Notice 1987-05, Miswiring in a Westinghouse Rod Control System (2 February 1987, Topic: Unanalyzed Condition, Boric Acid)
- Information Notice 1987-06, Loss of Suction to Low-Pressure Service Water System Pumps Resulting from Loss of Siphon (30 January 1987, Topic: Boric Acid)
- Information Notice 1987-07, Quality Control of Onsite Dewatering/Solidification Operations by Outside Contractors (3 February 1987, Topic: Boric Acid, Process Control Program)
- Information Notice 1987-08, Degraded Motor Leads in Limitorque DC Motor Operators (4 February 1987, Topic: Boric Acid, Anchor Darling)
- Information Notice 1987-09, Emergency Diesel Generator Room Cooling Design Deficiency (5 February 1987, Topic: Probabilistic Risk Assessment)
- Information Notice 1987-10, Potential for Water Hammer During Restart of Residual Heat Removal Pumps (11 February 1987, Topic: Water hammer)
- Information Notice 1987-11, Enclosure of Vital Equipment within Designated Vital Areas (13 February 1987, Topic: Contraband, Water hammer)
- Information Notice 1987-11, Enclosure of Vital Equipment Within Designated Vital Areas (13 February 1987, Topic: Contraband, Water hammer)
- Information Notice 1987-12, Potential Problems with Metal Clad Circuit Breakers, General Electric Type AKF-2-25 (13 February 1987, Topic: Water hammer)
- Information Notice 1987-13, Potential for High Radiation Fields Following Loss of Water from Fuel Pool (24 February 1987, Topic: Water hammer)
- Information Notice 1987-14, Actuation of Fire Suppression System Causing Inoperability of Safety-Related Ventilation Equipment (23 March 1987, Topic: Water hammer)
- Information Notice 1987-15, Compliance with the Posting Requirements of Subsection 223b of the Atomic Energy Act of 1954, as Amended (25 March 1987)
- Information Notice 1987-15, Compliance with the Posting Requirements of Subsection 223B of the Atomic Energy Act of 1954, As Amended (25 March 1987)
- Information Notice 1987-16, Degradation of Static O Ring Pressure Switches (2 April 1987, Topic: Commercial Grade)
- Information Notice 1987-17, Response Time of Scram Instrument Volume Level Detectors (7 April 1987, Topic: Scram Discharge Volume, Water hammer)
- Information Notice 1987-18, Unauthorized Service on Teletherapy Units by Nonlicensed Maintenance Personnel (8 April 1987, Topic: Water hammer)
- Information Notice 1987-19, Perforation and Cracking of Rod Cluster Control Assemblies (9 April 1987)
- Information Notice 1987-20, Hydrogen Leak in Auxiliary Building (20 April 1987, Topic: Excess Flow Check Valve)
- Information Notice 1987-21, Shutdown Order Issued Because Licensed Operators Asleep While on Duty (11 May 1987, Topic: Inattentive)
- Information Notice 1987-22, Operator Licensing Requalification Examinations at Nonpower Reactors (22 May 1987, Topic: License Renewal)
- Information Notice 1987-23, Loss of Decay Heat Removal During Low Reactor Coolant Level Operation (27 May 1987, Topic: Boric Acid)
- Information Notice 1987-24, Operational Experience Involving Losses of Electrical Inverters (4 June 1987)
- Information Notice 1987-25, Potentially Significant Problems Resulting from Human Error Involving Wrong Unit, Wrong Train, or Wrong Component Events (11 June 1987, Topic: Boric Acid, Fire Watch, Overspeed trip)
- Information Notice 1987-25, Potentially Significant Problems Resulting From Human Error Involving Wrong Unit, Wrong Train, or Wrong Component Events (11 June 1987, Topic: Boric Acid, Fire Watch, Overspeed)
- Information Notice 1987-26, Cracks in Stiffening Rings on 48-Inch-Diameter UF6 Cylinders (11 June 1987, Topic: Boric Acid)
- Information Notice 1987-26, Cracks in Stiffening Rings on 48-Inch-Diameter Uf6 Cylinders (11 June 1987)
- Information Notice 1987-27, Iranian Official Implies Vague Threat to U.S. Resources (10 June 1987, Topic: Boric Acid)
- Information Notice 1987-28, Air Systems Problems at U.S. Light Water Reactors (28 December 1987, Topic: Boric Acid)
- Information Notice 1987-29, Recent Safety-Related Incidents at Large Irradiators (26 June 1987, Topic: Coatings, Temporary Modification, Biofouling, Uranium Hexafluoride)
- Information Notice 1987-30, Cracking of Surge Ring Brackets in Large General Electric Company Electric Motors (2 July 1987)
- Information Notice 1987-31, Blocking Bracing, and Securing of Radioactive Materials Packages in Transportation (10 July 1987, Topic: Uranium Hexafluoride)
- Information Notice 1987-32, Deficiencies in the Testing of Nuclear-Grade Activated Charcoal (10 July 1987)
- Information Notice 1987-33, Applicability of 10 CFR Part 21 to Nonlicensees (24 July 1987, Topic: Commercial Grade)
- Information Notice 1987-34, Single Failures in Auxiliary Feedwater Systems (24 July 1987)
- Information Notice 1987-35, Reactor Trip Breaker, Westinghouse Model DS-416, Failed to Open on Manual Initiation from the Control Room (30 July 1987)
- Information Notice 1987-36, Significant Unexpected Erosion of Feedwater Lines (4 August 1987)
- Information Notice 1987-37, Compliance with the General License Provisions of 10 CFR Part 31 (10 August 1987)
- Information Notice 1987-39, Control of Particle Contamination at Nuclear Power Plants (21 August 1987, Topic: Fuel cladding, Overexposure)
- Information Notice 1987-40, Backseating Valves Routinely to Prevent Packing Leakage (31 August 1987, Topic: Packing leak)
- Information Notice 1987-41, Failures of Certain Brown Boveri Electric Circuit Breakers (31 August 1987)
- Information Notice 1987-42, Diesel Generator Fuse Contacts (4 September 1987)
- Information Notice 1987-43, Gaps in Neutron-Absorbing Material in High-Density Spent Fuel Storage Racks (8 September 1987)
- Information Notice 1987-44, Thimble Tube Thinning in Westinghouse Reactors (16 September 1987)
- Information Notice 1987-45, Recent Safety-Related Violations of NRC Requirements by Industrial Radiography Licensees (25 September 1987, Topic: High Radiation Area, Overexposure)
- Information Notice 1987-46, Undetected Loss of Reactor Coolant (30 September 1987)
- Information Notice 1987-48, Information Concerning the Use of Anaerobic Adhesive/Sealants (9 October 1987, Topic: Loctite)
- Information Notice 1987-49, Deficiencies in Outside Containment Flooding Protection (9 October 1987, Topic: Safe Shutdown)
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