ML082400522
| ML082400522 | |
| Person / Time | |
|---|---|
| Site: | Washington State University |
| Issue date: | 08/25/2008 |
| From: | Wall D Washington State Univ |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML082400522 (3) | |
Text
WASHINGTON STATE
,,UNIVERSITY Nuclear Radiation Center August 25, 2008 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Re: Docket# 50-27 Facility License # R-76 Enclosed please find two additional pages of the WSU NRC Technical Specifications which were inadvertently left out of the package sent on Friday, August 22.
I declare under penalty of perjury that the foregoing is true to the best of my knowledge.
Respectfully Submitted, 7t D 6V\\ 4fd' w9aij Donald Wall, Director P.O. Box641300, Pullman, WA 99164-1 300 509-335-8641
- Fax: 509-335-4433
- www.wsu.edu/nrc 40c2-c)
A maximum uranium content of 9 wt% for the standard TRIGA elements is about 6% greater than the design value of 8.5 wt%. Such an increase in loading would result in an increase in power density of 6% and reduces the safety margin by at most 10%. The maximum hydrogen-to-zirconium ratio of 1.8 could result in a maximum stress under accident conditions in the fuel element clad about a factor of 2 greater than the value resulting from a hydrogen-to-zirconium 30A Proposed Amendment No. 19
normal operation of the ventilation system are located external to the control and pool rooms.
Proper handling of airborne radioactive materials (in emergency situations) can be effected with a minimum of exposure to operating personnel.
5.7 Reactor Pool Water Systems Applicability: This specification applies to the pool containing the reactor and to the cooling of the core by the pool water.
Obiective: The objective is to ensure that coolant water shall be available to provide adequate cooling of the reactor core and adequate radiation shielding.
Specifications:
(1)
The reactor core shall be cooled by natural convection water flow.
(2)
All piping extending more than 5 ft below the surface of the pool shall have ade-quate provisions to prevent inadvertent siphoning of the pool.
(3)
A pool level alarm shall be provided to indicate a loss of coolant if the pool level drops more than 2 ft below the normal level.
(4)
The reactor shall not be operated with less than 15 ft of water above the top of the core.
Basis:. This specification is based on thermal and hydraulic calculations which show that the TRIGA-30/20 LEU core can operate in a safe manner at power levels up to 2000 kW with natural convection flow of the coolant water. A comparison between operation of the TRIGA-30/20 LEU and standard TRIGA MARK III has shown them to be safe for the above power level.
Thermal and hydraulic characteristics of mixed cores are essentially the same as those for TRIGA-30/20 LEU and standard cores.
In the event of accidental siphoning of pool water through system pipes, the pool water level will drop no more than 5 ft from the top of the pool.
Loss of coolant alarm after 2 ft of loss requires corrective action. This alarm is observed in the reactor control room, at the office, and at the campus police station.
5.8 Physical Security The Licensee shall maintain in effect and fully implement all provisions of the NRC staff-approved physical security plan, including amendments and changes made pursuant to the authority of 10 CFR 50.54(p). The approved security plan consists of documents withheld from public disclosure pursuant to 10 CFR 2.70, collectively titled, "Washington State University, Pullman, Washington TRIGA Reactor Security Plan."
34 Proposed Amendment No. 19