Shift Staffing at Nuclear Power PlantsML031190410 |
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, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant ![Entergy icon.png](/w/images/7/79/Entergy_icon.png) |
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Issue date: |
11/26/1991 |
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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-91-077, NUDOCS 9111200123 |
Download: ML031190410 (5) |
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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, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant |
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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 [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] </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 [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] </code>. |
UNITED STATES
NUCLEAR REGULATORY COMMISSION
OFFICE OF NUCLEAR REACTOR REGULATION
WASHINGTON, D.C. 20555 November 26, 1991 NRC INFORMATION NOTICE 91-77: SHIFT STAFFING AT NUCLEAR POWER PLANTS
Addressees
All holders of operating licenses or construction permits for nuclear power
reactors.
Purpose
The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice
to alert addressees to problems that could result from inadequate controls to
ensure that shift staffing is sufficient to accomplish all necessary functions
required by an event. It is expected that recipients will review the informa- tion for applicability to their facilities and consider actions, as appropri- ate, to avoid similar problems. 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 29, 1991, the Maine Yankee Atomic Power Plant experienced a main
generator hydrogen fire. Although a senior reactor operator (SRO) and
auxiliary operators from another shift were available immediately, the need to
provide personnel for the fire brigade and yet perform the many actions
required by the event caused a heavy workload for the control room staff. This
workload contributed to the licensee's failure to notify some key emergency
response personnel as specified in the licensee's procedure.
On June 15, 1991, at 11:50 p.m., lightning struck the switchyard at the
Yankee-Rowe Nuclear Power Station. The lightning strike caused a fire, a loss
of offsite power, a loss of normal telephone communication, and a reactor trip.
The staff on duty experienced difficulty in its effort to concurrently classify
the event, notify the required people, implement emergency operating procedures, and provide personnel for the fire brigade. The lack of staff contributed to
the licensee's failure to make a timely Notification of Unusual Event to the
State of Vermont and to the Commonwealth of Massachusetts. Two auxiliary
operators, members of the five man fire brigade, did not respond to the fire
because they were needed to start the steam driven emergency boiler feed pump.
After the plant was initially stabilized, the shift supervisor sent the shift
technical advisor to the central alarm station to report the plant's status to
the plant manager via the loss-of-power telephone. This was done because their
first attempts to report by the control room phones were unsuccessful.
9111200123 Zi
jW on ~~~~,9M q5IWI
IN 91-77 November 26, 1991 Discussion
The safe operation of a nuclear power plant and the preservation of the health
and safety of the public depend on the ability of the on duty staff to respond
to an event. The number of staff on each shift is expected to be sufficient
accomplish all necessary actions to ensure a safe shutdown of the reactor to
following an event. Those actions include implementing emergency operating
procedures, performing required notifications, establishing and maintaining
communications with the NRC and plant management, and any additional duties
assigned by the licensee's administrative controls. Many licensees assign
control room staff to be members of the fire brigade. Also, the operations
staff is frequently required to support special security responses such as
plant searches in response to a bomb threat. Section 50.54(m) of Title 10
the Code of Federal Regulations addresses only minimum staffing levels for of
licensed personnel and does not address personnel availability for performing
all of the necessary actions specified in the licensee's administrative con- trols and required by an event. Licensees may wish to carefully review actual
staffing needs to ensure that sufficient personnel are available to adequately
respond to all events. This is especially relevant to the backshift when
staffing levels are usually at a minimum.
Related Generic Communications
1. NUREG-0737, "TMI Action Plan," dated October 30, 1980.
2. NRC Generic Letter 82-16, "NUREG 0737 Technical Specifications," dated
September 20, 1982.
3. NRC Generic Letter 83-02, "NUREG 0737 Technical Specifications," dated
January 10, 1983.
This information notice requires no specific action or written response.
If
you have any questions about the information in this notice, please contact
technical contact listed below or the appropriate Office of Nuclear Reactor the
Regulation (NRR) project manager.
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical contact: Jesse Arildsen, NRR
(301) 492-1026 Attachment: List of Recently Issued NRC Information Notices
Attachment
IN 91-77 November 26, 1991 LIST OF RECENTLY ISSUED
NRC INFORMATION NOTICES
Information -Date of
Notice No. Subject Issuance Issued to
91-76 10 CFR Parts 21 and 11/26/91 All holders of OLs or CPs
50.55(e) Final Rules and vendors for nuclear
power reactors.
91-75 Static Head Corrections 11/25/91 All holders of OLs or CPs
Mistakenly not Included for nuclear power reactors.
in Pressure Transmitter
Calibration Procedures
91-74 Changes in Pressurizer 11/25/91 All holders of OLs or CPs
Safety Valve Setpoints for nuclear power reactors.
Before Installation
91-73 Loss of Shutdown Cooling 11/21/91 All holders of OLs or CPs
During Disassembly of High for nuclear power reactors.
Pressure Safety Injection
System Check Valve
91-72 Issuance of a Revision to 11/19/91 All holders of OLs or CPs
the EPA Manual of Protec- for nuclear power reactors.
tive Action Guides and
Protective Actions for
Nuclear Incidents
91-71 Training and Supervision 11/12/91 All NRC medical licensees.
of Individuals Supervised
by an Authorized User
91-70 Improper Installation of 11/4/91 All holders of OLs or CPs
Instrumentation Modules for nuclear power reactors.
91-69 Errors in Main Steam Line 11/1/91 All holders of OLs or CPs
Break Analyses for Deter- for pressurized-water reactors.
mining Containment Parameters
91-68 Careful Planning Signifi- 10/28/91 All holders of OLs or CPs
cantly Reduces the Potential for nuclear power reactors.
Adverse Impacts of Loss of
Offsite Power Events During
Shutdown
OL = Operating License
CP = Construction Permit
IN 91-77 November 26, 1991 Discussion
The safe operation of a nuclear power plant and the preservation of the health
and safety of the public depend on the ability of the on duty staff to respond
to an event. The number of staff on each shift is expected to be sufficient to
accomplish all necessary actions to ensure a safe shutdown of the reactor
following an event. Those actions include implementing emergency operating
procedures, performing required notifications, establishing and maintaining
communications with the NRC and plant management, and any additional duties
assigned by the licensee's administrative controls. Many licensees assign
control room staff to be members of the fire brigade. Also, the operations
staff is frequently required to support special security responses such as
plant searches in response to a bomb threat. Section 50.54(m) of Title 10 of
the Code of Federal Regulations addresses only minimum staffing levels for
licensed personnel and does not address personnel availability for performing
all of the necessary actions specified in the licensee's administrative con- trols and required by an event. Licensees may wish to carefully review actual
staffing needs to ensure that sufficient personnel are available to adequately
respond to all events. This is especially relevant to the backshift when
staffing levels are usually at a minimum.
Related Generic Communications
1. NUREG-0737, "1TMI Action Plan," dated October 30, 1980.
2. NRC Generic Letter 82-16, "NUREG 0737 Technical Specifications," dated
September 20, 1982.
3. NRC Generic Letter 83-02, "NUREG 0737 Technical Specifications," dated
January 10, 1983.
This information notice requires ino specific action or written response. If
you have any questions about the Information
l in this notice, please contact the
technical contact listed below or the appropriate Office of Nuclear Reactor
Regulation (NRR) project manager. Original Signed by
Charles E.Rossi
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical contact: Jesse Arildsen, NRR
(301) 492-1026 Attachment: List of Recently Issued NRC Information Notices
- SEE PREVIOUS CONCURRENCES
- OGCB:DOEA:NRR*RPB:ADM *LHFB:DLPQ:NRR *LHFB:DLPQ:NRR *C/LHFB:DLPQ:NRR
JBirmingham TechEd JArildsen WSwenson JWermiel
11/05/91 11/01/91 11/05/91 11/05/91 11/05/91
- DD/DLPQ:NRR *D/DLPQ:NRR *C/OGCB:DOEA:NRR D/DOE&k:URRsr1 CThomas JRoe CHBerlinger
11/08/91 11/08/91 11/12/91 DOCUMENT NAME: IN 91-77
- 91-XX
November xx, 1991 Discussion
The safe operation of a nuclear power plant and the preservation of the health
and safety of the public depend on the ability of the on duty staff to respond
to an event. The number of staff on each shift must be sufficient to
accomplish all necessary actions to ensure a safe shutdown of the reactor
following an event. Those actions include implementing emergency operating
procedures, performing required notifications, establishing and maintaining
communications with the NRC and plant management, and any additional duties
assigned by the licensee's administrative controls. Many licensees assign
control room staff to be members of the fire brigade. Also, the operations
staff is frequently required to support special security responses such as
plant searches in response to a bomb threat. Because of the addition of such
duties, minimum staffing levels specified in section 50.54 (m) of Title 10 of
the Code of Federal Regulations and in plant technical specifications may not
ensure that sufficient personnel are available to perform all of the necessary
actions specified in the licensee's administrative controls and required by an
event. Licensees may wish to carefully review actual staffing needs to ensure
that sufficient personnel are available to adequately respond to all
postulated events. This is especially relevant to the backshift when staffing
levels are usually at a minimum.
Related Generic Communications
1. NUREG-0737, "TMI Action Plan," dated October 30, 1980.
2. NRC Generic Letter 82-16, "NUREG 0737 Technical Specifications," dated
September 20, 1982.
3. NRC Generic Letter 83-02, "NUREG 0737 Technical Specifications," dated
January 10, 1983.
This information notice requires no specific action or written response. If
you have any questions about the information in this notice, please contact
the technical contact listed below or the appropriate NRR project manager.
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contact:
Jesse Arildsen, NRR
(301) 492-1026 Attachment: List of Recently Issued NRC Information Notices
Document: SHIFT STAFFING IN
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list | - Information Notice 1991-01, Supplier of Misrepresented Resistors (4 January 1991, Topic: Fitness for Duty)
- Information Notice 1991-02, Brachytherapy Source Management (7 January 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-03, Management of Wastes Contaminated with Radioactive Materials (Red Bag Waste & Ordinary Trash) (7 January 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-04, Reactor Scram Following Control Rod Withdrawal Associated with Low Power Turbine Testing (28 January 1991, Topic: Fitness for Duty)
- Information Notice 1991-05, Intergranular Stress Corrosion Cracking in Pressurized Water Reactor Safety Injection Accumulator Nozzles (30 January 1991, Topic: Fitness for Duty, Hydrostatic, Liquid penetrant)
- Information Notice 1991-06, Lock-up of Emergency Diesel Generator and Load Sequencer Control Circuits Preventing Restart of Tripped Emergency Diesel Generator (31 January 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-07, Maintenance Deficiency Associated with General Electric Horizontal Custom 8000 Induction Motors (4 February 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-08, Medical Examinations for Licensed Operators (5 February 1991, Topic: Brachytherapy)
- Information Notice 1991-09, Counterfeiting of Crane Valves (25 September 2007)
- Information Notice 1991-10, Summary of Semiannual Program Performance Reports on Fithess-For-Duty (FFD) in the Nuclear Industry (12 February 1991)
- Information Notice 1991-12, Potential Loss of Net Positive Suction Head (NPSH) of Standby Liquid Control System Pumps (15 February 1991)
- Information Notice 1991-13, Inadequate Testing of Emergency Diesel Generators (Edgs) (4 March 1991)
- Information Notice 1991-13, Inadequate Testing of Emergency Diesel Generators (EDGs) (4 March 1991)
- Information Notice 1991-14, Recent Safety-Related Incidents at Large Irradiators (5 March 1991, Topic: Fitness for Duty, Coatings, Incorporated by reference, Brachytherapy, Uranium Hexafluoride)
- Information Notice 1991-15, Incorrect Configuration of Breaker Operating Springs in General Electric AK-Series Metal-Clad Circuit Breakers (6 March 1991)
- Information Notice 1991-16, Unmonitored Release Pathways from Slightly Contaminated Recycle and Recirculation Water Systems at a Fuel Facility (6 March 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-17, Fire Safety of Temporary Installation or Services (11 March 1991)
- Information Notice 1991-18, High-Energy Piping Failures Caused by Wall Thinning (18 December 1991)
- Information Notice 1991-19, Steam Generator Feedwater Distribution Piping Damage (12 March 1991)
- Information Notice 1991-20, Electrical Wire Insulation Degradation Caused Failure in a Safety-Related Motor Control Center (19 March 1991)
- Information Notice 1991-21, Inadequate Quality Assurance Program of Vendor Supplying Safety-Related Equipment (19 March 1991)
- Information Notice 1991-22, Four Plant Outage Events Involving Loss of AC Power or Coolant Spills (19 March 1991)
- Information Notice 1991-23, Accidental Radiation Overexposures to Personnel Due to Industrial Radiography Accessory Equipment Malfunctions (26 March 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-24, Recent Operating Experience Involving Reactor Operation Without a Licensed Reactor Operator or Senior Reactor Operator Present in the Control Room (26 March 1991)
- Information Notice 1991-25, Commercial-Grade Structural Framing Components Supplied As Nuclear Safety-Related Equipment (1 April 1991)
- Information Notice 1991-25, Commercial-Grade Structural Framing Components Supplied as Nuclear Safety-Related Equipment (1 April 1991)
- Information Notice 1991-26, Potential Nonconservative Errors in the Working Format Hansen-Roach Cross-Section Set Provided with Keno and Scale Codes (2 April 1991, Topic: Fitness for Duty, Brachytherapy)
- Information Notice 1991-27, Incorrect Rotation of Positive Displacement Pump (10 April 1991)
- Information Notice 1991-28, Cracking in Feedwater System Piping (15 April 1991)
- Information Notice 1991-29, Deficiencies Identifie During Electrical Distribution System Functional Inspections (15 April 1991)
- Information Notice 1991-30, Inadequate Calibration of Thermoluminescent Dosimeters Utilized to Monitor Extremity Dose at Uranium Processing and Fabrication Facilities (23 April 1991, Topic: Brachytherapy, Uranium Hexafluoride)
- Information Notice 1991-31, Nonconforming Magnaflux Magnetic Particle (14AM) Prepared Bath (9 May 1991)
- Information Notice 1991-32, Possible Flaws in Certain Piping Systems Fabricated by Associated Piping and Engineering (15 May 1991, Topic: Hot Short, Liquid penetrant)
- Information Notice 1991-33, Reactor Safety Information for States During Exercises and Emergencies (31 May 1991)
- Information Notice 1991-34, Potential Problems in Identifying Causes of Emergency Diesel Generator Malfunctions (3 June 1991)
- Information Notice 1991-35, Labeling Requirements for Transporting Multi-Hazard Radioactive Materials (7 June 1991)
- Information Notice 1991-36, Nuclear Plant Staff Working Hours (10 June 1991)
- Information Notice 1991-37, Compressed Gas Cylinder Missile Hazards (10 June 1991)
- Information Notice 1991-38, Thermal Stratification in Feedwater System Piping (13 June 1991, Topic: Unanalyzed Condition)
- Information Notice 1991-39, Compliance with 10 CFR Part 21, Reporting of Defects and Noncompliance. (17 June 1991)
- Information Notice 1991-40, Contamination of Nonradioactive System and Resulting Possibility for Unmonitored, Uncontrolled Release to the Environment (19 June 1991)
- Information Notice 1991-41, Potential Problems with the Use of Freeze Seals (27 June 1991)
- Information Notice 1991-42, Plant Outage Events Involving Poor Coordination Between Operations and Maintenance Personnel During Valve Testing and Manipulations (27 June 1991)
- Information Notice 1991-43, Recent Incidents Involving Rapid Increases in Primary-To-Secondary Leak Rate (5 July 1991, Topic: Grab sample)
- Information Notice 1991-45, Possible Malfunction of Westinghouse Ard, Bfd, & Nbfd Relays, & A200 DC & DPC 250 Magnetic Contactors (5 July 1991)
- Information Notice 1991-46, Degradation of Emergency Diesel Generator Fuel Oil Delivery Systems (18 July 1991)
- Information Notice 1991-47, Failure of Thermo-Lag Fire Barrier Material to Pass Fire Endurance Test (6 August 1991, Topic: Safe Shutdown, Fire Barrier)
- Information Notice 1991-48, False Certificates of Conformance Provided by Westinghouse Electric Supply Company for Refurbished Commercial-Grade Circuit Breakers (9 August 1991, Topic: Fire Barrier)
- Information Notice 1991-49, Enforcement of Safety Requirements for Radiographers (15 August 1991, Topic: High Radiation Area, Fire Barrier)
- Information Notice 1991-50, a Review of Water Hammer Events After 1985 (20 August 1991, Topic: Fire Barrier)
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