ML20059H919
| ML20059H919 | |
| Person / Time | |
|---|---|
| Site: | Washington State University |
| Issue date: | 01/20/1994 |
| From: | WASHINGTON STATE UNIV., PULLMAN, WA |
| To: | |
| Shared Package | |
| ML20059H917 | List: |
| References | |
| NUDOCS 9401310235 | |
| Download: ML20059H919 (1) | |
Text
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, Soecifications: The reactor shall not be operated unless the facility ventilation system is )
operable, except for periods of time not to exceed 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> to permit repair or testing of the ventilation system. In the event of a substantial release of airborne radioactivity within the facility, the ventilation system will be secured or operated in the dilution mode to prevent the release of a significant quantity of airbome radioactivity from the facility.
Basis During nonnal operation of the reactor and the ventilation system, the concentration of 41 Ar and other airborne radionuclides discharged from the facility is below the applicable maximum air effluent concentration (AEC) values. In the event of a substantial release of l airbome radioactivity within the facility, the ventilation system will be secured or operated I in a dilution mode as appropriate. This action will permit minimizing the concentration of airbome radioactive materials discharged to the environment untilit is within the appropri-ate AEC value. In addition, operation of the reactor with the ventilation system shut down l for short periods of time to make system repairs or tests does not compromise the control over the release of airbome radioactive materials. Moreover, radiation monitors within the building, independent of the ventilation system, will give waming of high levels of radiation that might occur during operation with the ventilation system secured. ,
3.10 Limitations on Exneriments Aeolicability: This specification applies to experiments installed in the reactor and its l experimental facilities (defined in Section 1.2).
Obiective: The objective is to prevent damage to the reactor or excessive release of radioactive materials in the event of an experiment failure.
1 Soecifications: The reacto shall not be operated unless the following conditions governing i experiments exist.
(1) Nonsecured experiments shall have reactivity worths less than 1.00$.
(2) The reactivity worth of any single experiment shall not exceed 2.00$.
(3) Total worth of all experiments will not exceed 5.00$.
(4) Explosive materials, such as gunpowder, TNT, nitroglycerin, or PETN, in !
quantities greater than 25 mg shall not be irradiated in the reactor or experimental ;
facilities. Explosive materials in quantities less than 25 mg may be irradiated in the reactor or experimental facilities, provided the pressure produced upon detonation of the explosive has been calculated and/or experimentally demonstrated to be less than the design pressure of the container.
(5) Experiment materials, except fuel materials, which could off-gas, sublime, volatilize, or produce aerosols under (a) normal operating conditions of the i experiment or reactor, (b) credible accident conditions in the reactor, or (c) possible accident conditions in the experiment, shall be limited in activity so that if 100% of the gaseous activity or radioactive aerosols produced escaped to the reactor room or the atmosphere, the airborne concentration of radioactivity averaged over a year
! would not exceed the applicable limits of Appendix B of 10 CFR 20.
In calculations pursuant to item 5 above, the following assumptions shall be used: l 9401310235 940120 7 14 Amendment No.14 l PDR ADOCK 05000027 F PDR d