ML20006E081
| ML20006E081 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 01/19/1990 |
| From: | Jocelyn Craig Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20006E075 | List: |
| References | |
| NUDOCS 9002160205 | |
| Download: ML20006E081 (5) | |
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I 7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION l
ILLINOIS POWER COMPANY. ET AL.
l DOCKET NO. 50-461 ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT i
l The U.S. Nuclear Regulatory Commission (the Comission) is considering issuanceofanamendmenttotheIllinoisPowerCompany(IP),andSoyland
)
1 Power Cooperative, Inc. (the licensees) for Clinton Power Station, Unit 1, located in DeWitt County, Illinois, i
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action:
In general, the proposed license amendment would revise the Technical i
Specifications (TS)relatedtoaccidentmonitoringinstrumentationand time-limit values specified for timers.
Specifically, the licensees requested the proposed changes to Technical Specification Table 3.3.7.5-1 in order to insert exceptions to Specification 3.0.4 into the ACTION statements and to correct a typographical error; these L
- proposed changes have been approved.
Five additional proposed chenges have been found to be unacceptable on the. basis that they are not in conformance with the Standard Technical Specifications and the licensee has not submitted l
l sufficient technical justification to show that these changes are acceptable.
Three of these changes concern the time-limit values specified for timers in
- able 3.3.P-2, one change concerns an inconsistency existing between ACTION 81 T
associated with Table 3.3.7.5-1 and the general ACTION and Limiting Condition l-for Operation specified under Specification 3.3.7.5, and one change concerns 4
9002160205 900130 PDR-ADOCK 05000461 P'
i i
-the deletion of the safety / relief valve acoustic monitors from the Accident f
Monitoring Instrumentation.
This revision to the Clinton Power Station license would be made in response to the licensees' application for amendment dated October 30, 1987.
The Need for the Proposed Action:
Pursuant to 10 CFR 50.90, the licensees have proposed an amendment to j
Facility Operating License No. NPF-62 which consists of seven changes to the TS concerning accident monitoring instrumentation and time-limit values speci.
fied for timers.
The first approved change consists of revisions to Table 3.3.7.5-1 in order to insert exceptions to Specification 3.0.4 into associated ACTION statements. These exceptions would permit entry into OPERATIONAL CONDITIONS 1, 2 and 3 with an accident monitoring instrumentation channel (s) inoperable, as provided in the individual ACTION statements.
Although the instrumentation is required to be OPERABLE in OPERATIONAL CONDITIONS 1, 2 and 3, the instrumen-tation is designed and intended to be used to " assess plant and environs conditions during and following an accident" (Ref. Regulatory Guide 1.97).
Thus, entry into Conditions 1, 2 and 3 does not necessarily correspond to entry into the conditions for which the accident monitoring instrumentation will be needed Conditions 1, 2 and 3 do correspond to the OPERATIONAL CONDITIONS in which a design basis accident is most likely to be initiated. Thus, entry into CONDITIONS 1, 2 and 3 should be permitted with the number of OPERABLE channels less than the REQUIRED NUMBER OF CHANNELS requirement, but not with the number of OPERABLE channels less than the MINIMUM CHANNELS OPERABLE requirement
i
'o i,.
l (exceptwhentheACTIONprovidescompensatorymeasures). Exceptions to Speci-fication 3.0.4 would therefore be inserted into ACTIONS 80, 81 and 82.
The second approved change consists of a revision to Table 3.3.7.5-1 in order to correct a typographical error. The "," note for the suppression pool water temperature sensors refers to Specification 3.5.3.1 instead of 3.6.3.1 where requirements for the other suppression pool temperature sensors are specified.
Environmental impacts of the Proposed Action:
The proposed changes to Technical Specification Table 3.3.7.5-1 would add notations to remove the applicability of the provisions of Technical Specifi-cation 3.0.4 for accident monitoring instrumentation. This change would permit entry into Operational Conditions 1, 2, or 3 with inoperable channels and while in, appropriate action statements. This change is consistent with staff's policy for instrumentation which does not initiate automatic mitigation functions and with current standard technical specifications.
The proposed change to note "." under TABLE NOTATIONS for Technical Specification Table 3.3.7.5-1 would revise the reference to Technical Specifi-l cation 3.6.3.1 rather than 3.5.3.1.
This change is editorial to correct a typographical error and is acceptable, l
j.-
The Commission has determined that the proposed changes have no adverse
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effect on the probability of any accident. The proposed changes would net result in any increase in the potential radiological releases during normal operations, transients, and for accidents. No changes are being made l
l in the types or amounts of any radiological effluents that may be released offsite and there is no significant increase in the allowable individual or cumulative occupational radiation exposure. With regard to non-radiological l.
l l
-4 impacts, the proposed amendment involves systems located entirely within the restricted area as defined in 10 CFR Part 20. They do not affect non-radiological plant effluents and have no other environmental impact.
Therefore, the staff also concludes that there are no significant non-radiological environmental impacts associated with the proposed amendment.
Accordingly, the Commission findings in the ' Final Environmental Statement related to the operation of Clinton Power Station, Unit No. 1" dated May 1982 i
regarding radiological environmental impacts from the plant during normal operation or after accident conditions, are not adversely altered by this action.
Alternative to the proposed Actions:
The principal alternative would be to deny the requested emendment. This alternative, in effect, would be the same as a "no action" alternative.
Since the Commission has concluded that there are no significant environmental effects that would result from the proposed action, any alternative with equal or greater environmental impact need not be evaluated.
t Alterna.tive Use of Resources:
This action does not involve the use of resources not previously considered in the Ituelear Regulatory Commission's Final Environmental Statement for the Clinton Power Station, Unit 1, dated May 1982.
Agencies and Persons Consulted:
The NRC staff reviewed the licensees' request of October 30, 1987 and did not consult other agencies or persons.
F1 tid 111G Of 110 SIGt11FICAliT 1MPACT:
The Commission has determined not to prepare an environmental impact l
l
statement of the proposed license amendment.
Based upon this environmental assessment, the Comission concludes that the proposed action will not have a significant effect on the quality of the
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human environment.
t The Notice of Consideration of Issuance of Amendment and Opportunity for Hearing in connection with this action was published in the Federal Register on February 16,1988 (53 FR 4475) and February 18,1988(53FR4919). No request for hearing or petition for leave to intervene was filed following this notice.
For further details with respect to this action, see the request for amendment dated October 30, 1987, and the Final Environmental Statement for the C11titon Power Station dated May 1982, which are available for public inspection at the Commission Public Document Room, 2120 L Street, N.W.,
Washington, D.C. 20555 and et the Vespasian Warner Public Library,120 West Johnson Street, Clinton, Illinois 61727.
Dated at Rockville, Maryland this 19th day of January 1990.
i FOR HE NUCLEAR REGULATORY COMMISSION I
Q W. Craig, Director Project Directorate III-2 Division of Reactor Projects - !!!,
IV, Y and Special Projects l