ML17321A885
| ML17321A885 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 08/26/1985 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17321A884 | List: |
| References | |
| NUDOCS 8509060284 | |
| Download: ML17321A885 (9) | |
Text
~ 4 I Prs t
UNITEDSTATES t
NUCLEAR REGULATORY COMIVIISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.
90 TO FACILITY OPERATING LICENSE NO.
DPR-58 AND AMENDMENT NO.
75 TO FACILITY OPERATING LICENSE NO. DPR-74 INDIANA AND MICHIGAN ELECTRIC COMPANY DONALD C.
COOK NUCLEAR PLANT UNIT NOS.
1 AND 2 DOCKET NOS.
50-315 AND 50-316 Introduction By letter dated March 29, 1985, Indiana and Michigan Electric Company (the licensee) requested changes to the Reactor Trip System (RTS) Instrumentation and Engineered Safety Feature Actuation Instrumentation (ESFAS) sections of the Technical Specifications (TS) for D.
C.
Cook Units 1 and 2.
The changes fall into three general categories:
1.
Changes to establish conformance between the Unit 1 TS, the Unit 2 TS, and the Westinghouse Standard Technical Specifications, NUREG-0452, Revision 4, (STS).
2.
Clarifying editorial changes.
.3.
Changes which would extend the period of the time that one channel of the RTS can be bypassed for surveillance testing.
The proposed changes affect Unit 1 TS pages 3/4 3-1, 3/4 3-10, 3/4 3-14, 3/4 3-15, 3/4 3-16, 3/4 3-17, 3/4 3-18, 3/4 3-20, 3/4 3-21, 3/4 3-22, and 3/4 3-23 and Unit 2 TS pages 3/4 3-5, 3/4 3-6, and 3/4 3-21.
This safety evaluation is a review of the requested changes and their impact on the operation and administration of plant activities.
Summar of Evaluation The changes proposed by the licensee, discussed in detail below, establish conformance with STS requirements, establish consistency between Unit 1 and Unit 2 TS, or clarify existing requirements through editorial change.
As
- such, the changes do not adversely affect the safety of the plant nor the general public.
The staff agrees with the changes as described in the proposed amendments and finds them acceptable.
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'val ~Jation Pro osed Chan e to TS 4.3
~ 1.1.1 for Unit 1 Descri tion of Chan e
This TS currently reads as follows:
"Each reactor trip system instrumenta-tion channel shall be demonstrated OPERABLE by the performance of the CHANNEL
- CHECK, CHANNEL CALIBRATION and CHANNEL FUNCTIONAL TEST operations during the modes and at the frequencies shown in Table 4.3-1."
The licensee has proposed to change the phrase "during the modes" to "for the lllodes' Evaluation'his editorial change clarifies Reactor Trip System (RTS) surveillance requirements in that the proposed change more clearly reflects the necessity for completing specified tests prior to entering the mode in which the related functions are required to be operable.
The change also establishes conformance with the Unit 2 TS.
As such, it has previously been evaluated and found acceptable for Unit 2.
The staff finds the proposed change acceptable.
Pro osed Chan e to TS Table 3.3-2 for Unit 1 Descri tion of Chan e
The footnote at the end of TS Table 3.3-2 currently states, "Neutron detectors are exempt from response time testing.
Response
time shall be measured from detector output or input of the first electronic component in channel."
The proposed change would revise the second sentence of this footnote to read as follows:
"Response time of the neutron flux signal portion of the channel shall be measured from detector output or input of the first electronic component in channel."
Evaluation The proposed change clarifies which portions of the RTS neutron flux monitoring instrumentation are subject to time response testing.
The wording of the proposed revision is identical to that contained in both the Unit 2 TS and the STS.
As such, it has been previously reviewed and found acceptable.
The staff finds the proposed change acceptable.
Pro osed Chan e to TS Table 4.3-1 for Unit 1 Description of Change The proposed change adds a requirement to adjust the power range neutron flux instrumentation if it indicates a power level greater than 2X different than that obtained by heat balance above 15K power.
Evaluation The proposed change adds an adjustment criterion which was not previously contained in the Unit 1 TS.
The 2X.value is consistent with that contained in the Unit 2 TS and the STS.
As such, it has been previously evaluated and found acceptable.
The staff finds the proposed change acceptable.
Pro osed Chan e to TS 4.3.2. 1.1 for Unit 1 Descri tion of Chan e
The existing specification states:
"Each ESFAS instrumentation channel shall be demonstrated OPERABLE by the performance of the CHANNEL CHECK, CHANNEL CALIBRATION AND CHANNEL FUNCTIONAL TEST operations during the modes and at the frequencies shown in Table 4.3-2."
The proposed change reads as follows:
"Each ESFAS instrumentation channel shall be demonstrated OPERABLE by the performance of the CHANNEL CHECK, CHANNEL CALIBRATION and CHANNEL FUNCTIONAL TEST operations for the MODES and at the fre'quencies shown in Table 4.3-2."
Evaluation This editorial change clarifies ESF Actuation System (ESFAS) surveillance requirements in that the proposed change more clearly reflects the necessity for completing specified tests prior to entering the mode in which the related functions are required to be operable.
The change also establishes conformance with the Unit 2 TS.
As such, it has been previously evaluated and found acceptable for Unit 2'.
The staff finds the proposed change acceptable.
'roposed Chan es to TS Table 3.3-3 for Unit 1 Descri tion of Chan es The following changes are proposed:
a ~
The ACTION requirements are changed for the following ESFAS functions to indicate that the provisions of TS 3.0.4 are not APPLICABLE:
1.
Safety Injection, Turbine Trip, Feedwater Isolation, and Motor Driven Auxiliary Feedwater Pump actuation on:
(a)
Containment Pressure - High (b)
Pressurizer Pressure
- Low (c)
Steam Line Differential Pressure High with Four Loops Operating (d)
High Steam Flow in Two Lines with Four Loops Operating (e)
High Steam Flow in Two Lines Coincident with Low-Low T
with Four Loops Operating (f)
Higk 9team Flow in Two Lines Coincident with Low Steam Line Pressure with Four Loops Operating 2.
Steam Line Isolation on:
b.
(a)
High Steam Flow in Two Lines with Four Loops Operating (b)
High Steam Flow in Two Lines Coi'ncident with Low-Low T with Four Loops Operating (c)
High Steam Flow in Two Lines Coincident with Low Steam Line Pressure with Four Loops Operating 3.
Turbine Trip and Feedwater Isolation on:
(a)
High-High Steam Generator Mater Level The wording of ACTION 13 is changed to allow the bypassing of one channel of those ESFAS channels subject to ACTION 13 for two hours for surveil-lance testing pursuant to TS 4.3.2. 11 instead of one hour as presently allowed.
C.
d.
The wording of ACTION 14 is changed to delete reference to ESF Interlocks P-ll and P-12 and to authorize continued operation with an inoperable channel in the tripped condition with the next required CHANNEL FUNCTIONAL TEST provided that the inoperable channel is tripped within one hour, and the number of OPERABLE channels does not decrease to more than one below the total number specified.
The wording of ACTION 16 is changed to delete reference to ESF interlocks P-11 and P-12, and to authorize continued operation with the number of OPERABLE channels one less than the total number of channels provided the minimum number of OPERABLE-channels requirement is met and the inoperable channel is bypassed in one hour.
Additional allowance is granted to place another channel in an inoperable status for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for TS 4.3.2.1.1 surveillance.
C
/
Evaluation The proposed changes were reviewed against the requirements contained in the STS and the current Unit 2 TS, both of which have been previously reviewed and found acceptable with the following results:
2.
The changes described in a.
above are consistent with the requirements in STS and are acceptable to the staff.
The change described in b. above, allowing increased time for surveil-lance testing, is consistent with STS requirements and is acceptable to the staff.
3.
Pro The change described in c.
above, is consistent with the current wording of the Unit 2 TS and STS.
ACTION 14 applies to the same ESFAS instrumen-tation in both Unit 1 and Unit 2.
As such, the proposed change is acceptable to the staff.
The change described in d.
above is consistent with Unit 2 TS and STS.
ACTION 16 applies to the same ESFAS instrumentation in both Unit 1 and Unit 2.
As such, the proposed change is acceptable to the staff.
osed Chan es to TS Table 3.3-1 for Unit 2 Descri tion of Chan es The following changes are proposed:
3 ~
ACTION 1 is revised to allow the bypassing of one channel for two hours for surveillance testing instead of one hour.
ACTIONS 2b and Gb are revised to allow the inoperable channel to be bypassed for up to two hours to support surveillance testing instead of allowing an additional channel to be bypassed for surveillance testing.
ACTION 2c is revised to specify that the allowance to monitor gUANDRANT POWER TILT RATIO once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> be performed in accordance with Specification 4.2.4.c.
The existing ACTION 2c does not specify how to monitor the QUADRANT POWER TILT RATIO.
r Evaluation The the 2.
proposed changes have been reviewed and found acceptable to the staff for following reasons:
The change described in l. above establishes consistency with existing wording in the Unit 1 TS.
As such, the wording has been previously reviewed and found acceptable.
The changes described in 2.
above establish consistency with existing wording in the Unit 1 TS.
As such, the wording has been previously reviewed and found acceptable.
Addition of the reference to TS 4.2.4.c adds a previously lacking degree of specifics to ACTION 2c.
-TS 4.2.4.c specifies use of the movable incore detectors to confirm power level and indicated QUADRANT POWER TILT RATIO consistency.
As such, this TS requires physical measurements of incore conditions.
This is a direct and valid method to monitor
~
QUADRANT POWER TILT RATIO.
Pro osed Chan es to TS Table 3.3-3 for Unit 2 Descri tion of Chan es The licensee has proposed the following changes to TS Table 3.3-2:
l.
ACTION 13 is revised to allow one channel to be bypassed for surveillance testing per Specification 4.3.2.1.1 for two hours instead of one hour.
2.
ACTION 16 is revised to allow continued operation with an inoperable channel provided the inoperable channel is bypassed and the minimum channels OPERABLE requirement is met.
Evaluation The staff finds the proposed changes acceptable for the following reasons:
/
1.
The change described in l. above, allowing increased time for surveil-lance testing, is consistent with STS requirements.
2.
The change described in 2.
above establishes consistency between the Unit 2 TS and the corresponding STS ACTION requirement.
Environmental Consideration These amendments involve changes in the installation or use of a facility com-ponent located within the restricted areas as defined in 10 CFR Part 20 and changes to the surveillance requirements.
The staff has determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that these amendments involve no significant hazards consideration and there has been no public comment on such finding.
Accordingly, these amendments meet the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.
'onclusion The staff has further concluded, based on the considerations discussed
- above, that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed
- manner, and (2) such activities will be conducted in compliance with the Commission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the health and safety of the public.
Acknowled ement This evaluation was prepared by M.
G.
Guldemond.
Dated:
August 26; 1985