ML20002B603
| ML20002B603 | |
| Person / Time | |
|---|---|
| Site: | 05000142 |
| Issue date: | 11/04/1980 |
| From: | Hirsch D COMMITTEE TO BRIDGE THE GAP |
| To: | Ahearne J NRC COMMISSION (OCM) |
| Shared Package | |
| ML20002B602 | List: |
| References | |
| DD-80-30, NUDOCS 8012120655 | |
| Download: ML20002B603 (1) | |
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COMMITTEE TO BRIDGE THE GAP 1637 BUTL.R AVENUE s203 LOS ANG:' 54. CAUFORNIA 90025 (213) 478 4S29 (408) 336-53E1
!cventer 4, 1980
-T. o cn ahearne T
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7{ I Acting Chairpersen T
0 D
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'*uelear Regulaterv Cennission 1717 H Street IT b)
Washingten. D.C. 20555 Dear Dr. Ahearnes Ve have recently received a ecpy of a Directer's Lecision (30-30) which relies upon a statistic we believe to be inec: rect; we wish to alert you to facts which centradict it.
0- Octeter 3, 1979, we filed a request for a tenpera / shutdown of the UCM research reacter pending resolution of certain safety questiens related to its enissions of Argen-kl.
On Septenber 24, 1930, nearly a year later, the Cirector of the Cffice of !!uclear Reacter Regulation issueti a decision ruling arainst the repsst for a ; ecautienary shutdcun.
Still pending is deterninatica tv the Con-issien whether it wishes to review that Director's Lecision.
> cerire to its cerclusier, the Eiree'er's "Acisie* relied user an estirate cf radiatier er:csure that is 6< tires lower thar the actual adiation readines cited 1. the Licensee for the sa e lecation a-d conditions.
The estirates enplcyed in the Cecisien were reached through calculations without reference to a single actual radiatien reading.
~ ne actual readings centradict the calculational esti ates upon which the Directer's Decision is lased.
Specifically, page cf Appendix A cf that Oecision estinates radiatie.
expcsu e te be 1.h r?en nar at the roof cf the Fath Sciences 3uilding, near the air intake '-
'h e building, given 100C occupancy cf the roef and naxinun pernitted cperating level fer the reacter.
Hewever, the actual TLJ readings at' that location indicate that fer the same conditiens assuned in the Directer's Cecision, the actual neasurenents 1-dicate "expcsures en the crier of c0 r?e-/v." above tackground, according to 70'.A's February 28, 1990 erphasis added).
Applicatien for License Renewal (pg. V/3-11; S.is des ite the assertien in the Directer's Decision that its estinate of 1.h nRen/ year'is probably 10-1000 tines too high, and the a:inissien in the
- ?CM docunent nentiene:i above that their readings of 90 nRer/ year were achieved only after throwing cut a nunber of I reatiings that were twice as high.
Other actual reasurenents further centradict the calculate:i estirate upon which the Directe 's Oecision is insed; we would be pleased to provide any further inferration desired.
Ct:r intention here is nerely to alert you to in'cr ation which suggests that the central nunter upon which the Decision relies-1.4 mRen/yr.--appears to be in errer.
Sir erely,
/~
80 12]20 65T Laniel nirsch Cc issioners 1radford, Oiliasky, a.d Hen:frie cct
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