ML22301A140
| ML22301A140 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/28/2022 |
| From: | Kenneth Kolaczyk, Jure Kutlesa NRC/RGN-III/DRSS/SEPIR, NRC/NRR/DRO/IRAB |
| To: | |
| References | |
| Download: ML22301A140 (37) | |
Text
February 7, 1993 Vehicle Intrusion at Three Mile Island (TMI) 31 October 2022 1
Disclaimer
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31 October 2022 3
Designation
- Discussion: Non Designated
- Powerpoint: Non Designated We will not discuss Safeguards Information or Security Related Information.
31 October 2022 4
2 Takeaways
- 1. NRC updated Security Design Basis Threat (DBT - 10 CFR 73.1(a))
- 2. NRC required Vehicle Barrier Systems
31 October 2022 5
Definitions Significant Operational Event (MD 8.3 NRC Incident Investigation Program)
- Any radiological, safeguards, or other safety-related operational event that poses an actual or a potential hazard to public health and safety, property, or the environment.
IIT - Incident Investigation Team (MD 8.3 NRC Incident Investigation Program)
- Investigatory response for a significant event is defined by its risk significance, complexity, and generic safety or security implications.
- IIT must consider whether licensee and NRC activities preceding and during the event were timely and adequate.
Definitions OCA - Owner Controlled Area
- Licensees property
- Outside Protected Area
- Not considered part of physical protection PA - Protected Area
- Encompassed by physical barriers
- Identification and search of all vehicles, individuals and packages VA - Vital Area
- Contains vital equipment that, if fail, may endanger the public by exposure to radiation
- Requires access through 2 physical barriers 31 October 2022 6
31 October 2022 7
Owner Controlled Area Nuclear Plant Security Zones Nuclear Plant Security Zones Protected Area Vital Area Protected Area Double Fence Checkpoints
31 October 2022 8
TMI Location
31 October 2022 9
TMI Location Three Mile Island
31 October 2022 10 Three Mile Island
31 October 2022 11 Timeline: February 7, 1993
- 6:53 am-Intruder drives into the OCA via North entrance at 35-40mph
- Drives through 2 stop signs
- Passes PA processing center
The Intruder - Pierce Nye
- 31-year-old Caucasian male
- Lived 56 miles northwest of TMI
- No history of violence or arrests
- Had been admitted to hospitals for depression:
Most recent hospitalization - involuntary admission on January 18, 1993
- Released on January 22, 1993
- Event occurred on February 7, 1993 31 October 2022 12
31 October 2022 13 Intruders Route
31 October 2022 14 Route North Gate
31 October 2022 15 Route Time - 68 sec
31 October 2022 16 Turbine 1 Door
31 October 2022 17 Turbine 1 Door
31 October 2022 18 Timeline: February 7, 1993
- Intruder goes through PA fence (causes alarm)
- Through aluminum door into Unit 1 Turbine Building
31 October 2022 19 PA Gate #1
31 October 2022 20 PA Gate #1
31 October 2022 21 Turbine Building Door
31 October 2022 22 Turbine Building Door
31 October 2022 23 Timeline: February 7, 1993
- 7:05 am - TMI declares Site Area Emergency
- 10:57 am - Intruder apprehended by TMI Security (Randy Patterson-RII)
31 October 2022 24 Turbine Floor Plan
31 October 2022 25 Turbine Building
31 October 2022 26
31 October 2022 27 Intruders Location
31 October 2022 28
Regulatory Requirements 10 CFR § 73 - Physical Protection of Plants and Materials
- 73.1 (a) Purpose. This part prescribes requirements for the establishment and maintenance of a physical protection system which will have capabilities for the protection of special nuclear material at fixed sites and in transit and of plants in which special nuclear material is used. The following design basis threats, where referenced in ensuing sections of this part, shall be used to design safeguards systems to protect against acts of radiological sabotage and to prevent the theft or diversion of special nuclear material.
31 October 2022 29
31 October 2022 30 Safety Significance
- Performance objectives of 10 CFR § 73 did not effectively address the use of a vehicle for entering the protected area in a manner similar to the TMI event
- Method of entry into the protected area significantly affected the security program response strategy toward protecting the vital areas and protecting against radiological sabotage
- NRC had not effectively defined and communicated its expectations for the licensee's security program performance in response to vehicle intrusions
Additional Incident 31 October 2022 31
- February 26, 1993:
Bomb exploded in the World Trade Center parking garage.
1988 vs 1994 Security Design Basis Threat (DBT) 31 October 2022 32
31 October 2022 33 Results
- NRC modified the design basis threat for radiological sabotage to include:
- (1) use of a land vehicle by adversaries for transporting personnel and their hand equipment to the proximity of vital areas
- (2) use of a land vehicle bomb
- NRC required licensees to install vehicle barrier systems (94 Barrier)
RG 5.68 (August 1994) 31 October 2022 34
31 October 2022 35 Questions?
Contacts
- Jure Kutlesa, RIII Security/EP Inspector jure.kutlesa@nrc.gov
- Randy Patterson, RII Security Inspector randy.patterson@nrc.gov 31 October 2022 36
31 October 2022 37 References
- NUREG-1485 (IIT Report) - Unauthorized forced entry into the protected area at Three Mile Island Unit 1 on February 7, 1993
- NUREG-1485 (SGI) - NS101328
- NRC Information Notice 93-94 (Public Site)
- NUREG-0933 - ISSUE 177: Vehicle Intrusion at TMI (Public Site)
- MD 8.3 - NRC Incident Investigation Program