ML19340A889
| ML19340A889 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 12/31/1969 |
| From: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Van Nort P COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009050617 | |
| Download: ML19340A889 (5) | |
Text
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W. Dooly, DR R. Engelken, CO (2)
H. K. Shapar, OGC W. Dube, DRL (5) n q,
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J. R. Buchanan, ORNL
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HQ PDR C Docket File 39 DRL Reading DR Reading Docket No. 50-10 Branch Reading i.
ACRS (3) l F. Schroeder Commonwealth Edison Company D. J. Skovholt P. O. Box 767 D. Thnmpson S.McManusj' Chicago, Illinois 60690 R. DeYoung R. Diggs D. Ziemann Attention:
Mr. Peter S. Van Nort Change No. 20 License No. DPR-2 Gentlemen:
Your Proposed Change No. 20 dated November 20, 1969, ascsupplemented by letter dated November 26, 1969, to the Technical Specifications of i-A.tcense No. DPR-2 has been reviewed pursuant to Section 50.59 of 10 CFR
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t Part 50.
The proposed change would:
i 1.
establish airborne effluent limits for Dresden 1 based on combined f
discharges from Units 1 and 2, and
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2.
establish minimt= shif t and control rooci staffing requirements for operation of multiple units.
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I The calculation of off-site doses resulting from airborne effluents is complicated by multiple nuclear units operating on the same site with different discharge stack chart:teristics. The airborne discharge limits necessary to assure acceptable doses must be expressed in equations which relate the limits for each discharge stack. We have evaluated the equations proposed by the Cocunonwealth Edison Company for establishing
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the effluent limits for noble gases, iodines, and airborne particulates t
from Dresden Units 1 and 2 and find them acceptabic.
Operation of the Dresden Units 1 and 2 compicx from a common control room requires more operating personnel than were required for Unit 1 l
operation; however, some personnel will perfort duties in both unit.s.
He have reviewed the proposed shift staffing for normal operation and cinimum control room staffing requirements and have concluded that thecc staffing requirements provide reasonable assurance that the operatica will be performed in a safe manner.
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Coccionwealth Edison Company 2-Based on tae preceding considerations, we have concluded that operation of Dresden Unit I as proposed does not present significant hazards con-siderations not described or implicit in the Dresden 1 Hazards %=ary Report (Safety Analysis Report) and that there is reasonable assurance that the health and safety of the public will not be endangered by opera-tion of the reactor in the manner proposed.
Accordingly, the Technical Specifications of Facility License No. DPR-2 are hereby changed as set forth in Attachment A to this letter.
Sincerely, ongmal sed b'/
pea. ;..I n ns Peter A. Morris, Director Division of Reactor Licensing
Enclosure:
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i ATIACHMENT A CHANGES TO THE TECHNICAL SPECIFICATIU:
FACILITY LICENSE NO. DPR-2
_COGOL'EALTH EDISON C0t2/Ja*
DOCKET No. 50-10 l
CHANGE NO. 20 1.
Delete the[last sentence of paragraph B.S.c (Airborne kh insert in its place the following:
'Ihe stack discharge rates shall be controlled within the limits:
(Due to the existence of Dresden Unit 1 and r.a Unit 2/3 stacks in close vicinity, a set of equations c.rc to express the airborne effluent limits. The sycbols in tions stand for the following:
Qi y release rate from Unit I chimney 2,3
= release rate from Units 2 and 3 chimacy with oni:
Q operating QRS
= release rate from Units 2 and 3 reactor buildin;;
i stack with only Unit 2 operating.)
(1) The activity of noble gases released to the environs r exceed:
(a) Average Annual Rate (Q in curic/sec):
A + 22 3 + 9RS
-< 1.0 0./
1.0 0.02 (b) Any 2 days per 7 consecutive days (Q in curic /n t
1 + 39_3 + One
< l.0 0.7 1.4 0.02 i
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i (c) Any one fif teen minute period per hour (Q in curies /sec):
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< 1.0 (2) The activity of iodine a released to the environs as part of the airborne effluents shall not exceed an Annual Average Rate of (Q in microcurie /sec):
01 + Q2,3 + _331 < 1 2
3 0.1 (3) The activity of particulates released to the environs es part of i
airborne effluents shall not exceed an Annual Average Rate of (Q in microcurie /sec):
l' El _ + _% 1 +. 9RS_
[_ < 1 O.7 1
0.03 (4) If the limits of (1), (2) and (3) above are not met fc11oving a routine surveillance check, normal orderly shutdown shall r
be initiated within one hour and the reactor shall be in the hot shutdown condition within ten hours.
2.
Delete paragraph C.b (Operating Principics) and insert in its place j
the following.
1
'Tne shif t manning and minimum control room staffing for the station shall be as shown in Table III."
i 3.
Add the attached Table III at the end of the Technical Specifications.
t i
1
TABLE III SIIIFT !!ANNING CIIART SIIIFT STAFFING FOR NORMAL OPERATION
_ License No. of No. of Operating Staff Positions Type _
_ Units Units 0
1 2
Shift Engineer (SE)(
Shift Foreman (SF)
SRO 2
1 1
2 Nuclear Station Operator (NS0) (2)
RO 2
1 2
3 Equipment Operator or 2
3 4
Equiprnent Attendant Radiation Protection Tech.
1 1
1 MINIt!UM CONTROL ROOM STAFFING
_No. of Shutdown Units Staff PositionF_
0 1
2 SE, SF or USO (3) 1 1
NSO(2) 2 1
Notes:
(1) A Licensed Senior Reactor Operator will be on site at all times, (2) If an individual is not licensed on both units, he will only operate the unit for which he is licensed.
(3) USO licensed on both units.
.. -. _. _.