ML20116M013

Safety Evaluation Supporting Amend 101 to License NPF-42

ML20116M013
Person / Time
Site:	Wolf Creek
Issue date:	08/09/1996
From:	NRC (Affiliation Not Assigned)
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ML20116M009	List: ML20116M005 ML20116M013
References
NUDOCS 9608190249
Download: ML20116M013 (19)

Text

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UNITED STATES g

g NUCLEAR REGULATORY COMMISSION

's WASHINGTON, D.C. 20565 4 001

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l SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.101 TO FACILITY OPERATING LICENSE N0. NPF-42 l

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION DOCKET NO. 50-482

1.0 INTRODUCTION

By letter dated July 29, 1994, as superseded by letter dated September 15, 1995, and subsequently supplemented by letters dated March 8, 1996, April 18, 1996, June 14, 1996, r.ad July 12, 1996, Wolf Creek Nuclear Operating Corporation (the licensee) requested changes to the Technical Specifications (Appendix A to Facility Operating License No. NPF-42) (TS) for the Wolf Creek Generating Station. The proposed changes would revise TS 3/4.8.1 and its associated Bases to improve overall emergency diesel generator reliability and availability.

Specifically, the proposed changes would incorporate recommendations and suggestions from Generic Letter (GL) 93-05, "Line-Item Technical Specifications Improvements to Reduce Surveillance Requirements for Testing During Power Operation;" the Improved Standard Technical Specifications, NUREG-1431, " Standard Technical Specifications - Westinghouse Plants" (STS); Regulatory Guide (RG) 1.9, Revision 3, " Selection, Design, Qualification, and Testing of Emergency Diesel Generator Units Used as Class lE Onsite Electric Power Systems at Nuclear Power Plants;" and GL 94-01,

" Removal of Accelerated Testing and Special Reporting Requirements for Emergency Diesel Generators from Plant Technical Specifications."

In addition, the sampling and testing program for the diesel fuel oil has been revised. Surveillance requirements are now patterned after the surveillance requirements of STS, and later standards for the required sampling and testing.

The June 14, 1996, and July 12, 1996, supplemental letters provided correct Bases pages and did not change the original no significant hazards consideration determination published in the Federal Reaister on May 22, 1996 (61 FR 25716).

2.0 BACKGROUND

Section 182a of the Atomic Energy Act (the "Act") requires applicants for nuclear power plant operating licenses to state TS to be included as part of the license. The Commission's regulatory requirements related to the content of TS are set forth in 10 CFR 50.36. That regulation requires that the TS include items in five specific categories, including (1) safety limits, 9608190249 960809 PDR ADOCK 05000482 P

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limiting safety system settings and limiting control settings; (2) limiting conditions for operation; (3) surveillance requirements; (4) design features; and (5) administrative controls. However, the regulation does not specify the particular requirements to be included in a plant's TS.

The Commission has provided guidance for the contents of TS in its " Final Policy Statement on Technical Specifications Improvements for Nuclear Power Reactors" (" Final Policy Statement"), 58 FR 39132 (July 22,1993), in which the Commission indicated that compliance with the Final Policy Statement satisfies fl82a of the Act.

In particular, the Commission indicated that certain items could be relocated from the TS to licensee-controlled documents, consistent with the standard enunciated in Portland General Electric Co.

(Trojan Nuclear Plant), ALAB-531, 9 NRC 263, 273 (1979).

In that case, the Atomic Safety and Licensing Appeal Board indicated that " technical specifica61ons are to be reserved for those matters as to which the imposition of rigid conditions or limitations u90n reactor operation ic deemed necessary to obviate the possibility of an abnormal situation or evt.o giving rise to an i

immediate threat to the public health and safety."

Consistent with this approach, the Final Policy Statement identified four criteria to be used in determining whether a particular matter is required to be included in the TS, as follows:

(1) installed instrumentation that is used to detect, and indicate in the control room, a significant abnormal degradation of the reactor coolant pressure boundary; (2) a process variable, design feature, or operating restriction that is an initial condition of a design basis accident or transient analysis that either assumes the failure of or presents a challenge to the integrity of a fission product barrier; (3) a structure, system, or component that is part of the primary success path and which functions or actuates to mitigate a design basis accident or transient that either assumes the failure of or presents a challenge to the integrity of a fission product barrier; and (4) a structure, system, or component which operating experience or probabilistic safety assessment has shown to be significant to public health and safety. As a result, existing TS requirements which fall within or satisfy any of the criteria in the Final Policy Statement must be retained in the TS, while those TS requirements which i

do not fall within or satisfy these criteria may be relocated to other licensee-controlled documents.

Fuel Oil Test Proaram: The licensing basis for the plant, as described in the TS, requires testing of the quality of diesel fuel oil stored on-site. The tests are required to be performed before new oil is introduced into the storage tanks and periodically on the stored oil. The purpose of these tests is to verify that the quality of the oil meets the standards needed to ensure proper operation of the emergency diesel generators. The specifications for diesel fuel oil, and the surveillance tests required to verify its compliance with these specifications, are included in the current TS.

However, the licensee requested that these surveillance requirements be revised and included as a part of the administrative program.

In accordance with 10 CFR 50.59, this will permit the licensee to change them without prior approval by the NRC, provided the proposed changes do not include unreviewed safety

O 3..

questions. With a few exceptions, the proposed TS modifications conform to the requirements of the STS.

l 3.0 EVALUATION j

3.1 TS Section 3.8.1.1 4

[

Action Stata-ant a: The licensee proposes to delete the following sentence from the action statement:

"If either diesel generator of the above required i

A.C. electrical power sources has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate OPERABILITY by performing Specification 4.8.1.1.2a.4*

l separately for that diesel generator within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />." The licensee also i

proposes to delete the following footnote:

"*The automatic start and sequence i

loading of a diesel generator satisfies the testing requirements of l

Specification 4.8.1.1.2a.4 for this Action Statement."

l These proposed changes are in accordance with the recommendations provided in Generic Letter (GL) 93-05. Also, these changes are in conformance with Action A of TS 3.8.1 of the STS. The recommendations contained in these documents j

allow the deletion of requirements for alternate testing that require testing of emergency diesel generators (EDGs) and other unrelated systems not 1

associated with an inoperable train or subsystem. The footnote can be deleted since an EDG is no longer required to be tested as part of this action statement. Therefore, these changes are acceptable.

{

Action Statement b: The proposed Action Statement b adds "..., unless the l'

absence of any potential common mode failure for the remaining diesel i

generator is demonstrated, or if the diesel generator became inoperable due to any cause other than an inoperable support system, an independently testable component, preplanned preventative maintenance or testing, or maintenance to j

correct a condition which, if left uncorrected,'would not affect the OPERABILITY of the diesel generator;" to the phrase " Demonstrate the i

OPERABILITY of the remaining OPERABLE diesel generator by performing i

Specification 4.8.1.1.2a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> **." The proposed statement also j

deletes the following footnote:

"**This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABLE l

status unless the diesel was declared inoperable to do preplanned preventative l

maintenance, testing, or maintenance to correct a condition which, if left uncorrected, would not affect the operability of the diesel generator."

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The proposed changes are consistent with the recommendations contained in GL 93-05.

Also, these changes are in conformance with Action B of TS 3.8.1 of the STS.

The GL suggests that when an EDG is inoperable (not including a support system or independently testable component), the other EDG should be tested only once, unless the absence of any potential common mode failure can be demonstrated.

Information provided in the STS indicates that 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is a reasonable time frame to confirm that the operable EDG is not affected by the same problem as the inoperable EDG. The licensee reports that 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is 1

compatible with plant operating experience. Thus, the proposed changes are acceptable.

,Q l

_4-Action Statement c:

Proposed Action Statement c adds ", unless the absence of any potential common mode failure for the remaining diesel generator is demonstrated, or if the diesel generator became inoperable due to any cause other than an inoperable support system, an independently testable component, preplanned preventive maintenance or testing, or maintenance to correct a condition which, if left uncorrected, would not affect the OPERA 81LITY of the diesel generator" to an existing phrase. This phrase is "With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining offsite A.C. source by performing Specification 4.8.1.1.1 within I hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter and Specification 4.8.1.1.2a.4* within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> on the redundant diesel generator." The proposed statement also deletes the same

"**" footnote that is provided above for Action Statement b.

In addition, the licensee proposes to delete reference to Action Statement a.

The proposed changes are in accordance with recommendations provided in GL 93-05 which suggest that for such a condition with an inoperable EDG (not including a support system or independently testable component), the other EDG should be tested only once and within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> unless the absence of any potential common mode failure can be demonstrated. The deletion of the reference to Action Statement a is appropriate since the proposed Action Statement a no longer requires testing of an EDG. Therefore, these changes are acceptable.

Action Statement e: The licensee proposes to delete she phrase " demonstrate the OPERA 8ILITY of two diesel generators by sequentially performing Specification 4.8.1.1.2a.4 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> unless the diesel generators are already operating;" from the current action statement. The licensee also proposes to delete the sentence "A successful test of diesel generator OPERABILITY performed in accordance with Specification 4.8.1.1.2a.4* under this ACTION for the OPERA 8LE diesel generators, satisfies the subsequent testing requirement of Specification 3.8.1.1 ACTION a."

In addition, the proposed action statement deletes the same "*" footnote that is provided above for Action Statement a.

Deletion of the phrase and sentence is consistent with the recommendations in GL 93-05. These recommendations allow the deletion of requirements for alternate testing that require testing of EDGs and other unrelated systems not associated with an inoperable train or subsystem (other than an inoperable EDG). These two deletions are also consistent with Action C of TS 3.8.1 of the STS. Deletion of the "*" footnote is appropriate since an EDG is no longer to be tested as part of this action statement. Therefore, these proposed changes are acceptable.

Action Stata= ant a: The licensee proposes to add to the TS an action statement that will require rutoring the properties of stored diesel fuel oil to the prescribed limits, within 30 days, following the addition of new fuel oil to the storage tanks. This new requirement will ensure high quality of fuel oil for emergency diesel generators. The 30-day time limit for restoring stored fuel oil properties is acceptable because fuel oil properties at issue

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do not have an immediate impact on diesel generator operation.

This time

limit is also in conformance with the time limit specified in TS 3.8.3.D of the STS.

Based on the above discussion, the staff finds this change acceptable.

A "*" footnote associated with Action Statement g is being added to specify that new oil is to be tested in accoradance with the Diesel Fuel Oil Testing Program before the addition of the new fuel oil to the Diesel Fuel Oil Storage Tanks. This footnote highlights that new fuel oil is to be tested and found acceptable before addition to the storage tanks.

The staff finds this acceptable.

Action Statement h: The licensee proposes to add to the TS an action statement that will require restoring the particulate concentration of stored diesel fuel oil to the prescribad limit (10 mg/ liter) within 7 days. This requirement will prevent fouling of filters and fuel injection equipment, which could cause engine failure.

The 7-day time limit is acceptable because 10 mg/ liter is a conservative value and is unlikely to cause diesel generator failure.

The risk associated with this time limit is less than the risk associated with shutdown transient. Also, this request is consistent with TS 3.8.3.C of the STS.

Based on the above discussion, the staff finds this

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change acceptable.

3.2 TS Section 4.8.1.1.2 TS 4.8.1.1.2.a:

The licensee proposes to delete the words "In accordance with the frequency specified in Table 4.8.1" and add the words "At least once per 31 days."

Table 4.8.1 specifies the frequency of testing based on the number of failures during the last 20 valid tests of each EDG. The proposed changes for TS 4.8.1.1.2.a. are consistent with suggestions in GL 94-01.

This GL was developed based upon Option 4 in SECY-93-044, " Resolution of Generic Safety Issue B-56, ' Diesel Generator Reliability'." This option recommends that licensees adopt the accelerated testing provisions of the improved standard TS with an option to relocate accelerated tes'.ing and special reporting requirements for the EDGs from the TS to the maintenance program when the maintenance rule goes into effect in 1996.

i l

After further consideration, the staff concluded that licensees need not await the effective date of the maintenance rule and issued GL 94-01, which indicates that licensees may immediately request the removal of the TS provisions for accelerated testing and special reporting requirements for j

EDGs. However, in revising the TS accordingly, licensees must commit to i

implement within 90 days a maintenance program for monitoring and maintaining EDGs performance consistent with the provisions of 10 CFR 50.65, " Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants," and the guidance of Regulatory Guide (RG) 1.160, " Monitoring the Effectiveness of Maintenance at Nuclear Power Plants." The licensee has documented that the Wolf Creek Nuclear Operating Corporation will implement this maintenance program under the control of the Emergency Diesel Generator Reliability Program (EDGRP).

In addition, the licensee has documented that the EDGRP will capture the provisions of the maintenance rule as it applies to EDGs and will

j be consistent with the provisions of 10 CFR 50.65 and the guidance of RG 1.160.

Further, the licensee has documented that the EDGRP will be fully implemented within 90 days of formal approval of this proposed revision to the TS.

On the basis of the above, the proposed changes for TS 4.8.1.1.2.a are acceptable.

TS 4.8.1.1.2.a.4):

The licensee proposes to delete the current TS 4.8.1.1.2.a.4) in its entirety:

" Verifying the diesel starts and accelerates to at least 514 rpm in less than or equal to 12 seconds.** The generator voltage and frequency shall be 4160 + 160 - 420 volts and 60 1.2 Hz within 12 seconds ** after the start signal.

The diesel generator shall be started for this test by using one of the following signals:

a) Manual, or b)

Simulated loss of offsite power by itself, or c) Safety injection test signal." This would be replaced by the following:

" Verifying the diesel starts ** and obtains a voltage of 4160 + 160 - 420 volts, and a frequency of 60 1.2 Hz. The diesel generator can be slow started and allowed to reach i

rated speed at a rate that is selected to minimize stress and wear."

The proposed changes result in a surveillance requirement that is consistent with the " Start Test" as described in RG 1.9, Revision 3.

The start test is l

performed to demonstrate proper startup from standby conditions and to verify that the required design voltage and frequency are attained.

For these tests, j

RG 1.9, Revision 3, recommends that the EDGs be slow started and allowed to reach rated speed on a prescribed schedule th::t is selected to minimize stress and wear. Thus, the removal of the 12 second time requirement is appropriate in order to reduce undue stress and wear on the EDGs. The proposal to delete the requirement to obtain 514 RPM is consistent with the recommendations of RG 1.9, Revision 3 and TS 3.8.1.2 of the STS. The 514 RPM verification is redundant to the frequency verification since the frequency of the generator can be converted directly into engine RPM.

Therefore, the proposed changes are acceptable.

TS 4.8.1.1.2.a.5):

The licensee proposes to replace the current "6000 to 6201 kW***" with "5580 to 6201 kW***."

The licensee also proposes to add "until temperature equilibrium is attained. The rate of loading and unloading of the generator during this test should be gradual, based upon minimizing stress and wear on the diesel generator, and...."

In addition, the word " excess" currently provided in the "***" footnote is being deleted and the word "outside" added to the footnote.

The proposed changes result in a surveillance requirement that is in accordance with the " Load-Run Test" as described in RG 1.9, Revision 3.

This test is to demonstrate 90 to 100 percent of the continuous rating of the EDG for an interval of not less than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and until temperature equilibrium has been attained. As indicated in RG 1.9, Revision 3, the test may be accomplished by synchronizing the generator with offsite power, and the loading and unloading of an EDG should be gradual and based on a prescribed schedule that is selected to minimize stress and wear on the EDG. The proposed changes are also in accordance with TS 3.8.1.3 of the STS.

Based on this information, the staff finds these changes acceptable.

[

]

I TS 4.8.1.1.2.b:

The current specification requires checking for and removing accumulated water in the day tanks at least once every 31 days and after every operation of the diesel engine for one hour or longer. The licensee proposes to eliminate the requirement to check for accumulated water after diesel operation for one hour or longer. Control of accumulated water in the day tanks is needed to prevent microbiological growth which could produce filter fouling. The presence of water in the fuel oil could also affect performance of the diesel engine. However, present experience has indicated that removal of the accumulated water once every 31 days provides sufficient protection for the diesel engine. This is reflected in TS 3.8.1.5 of the STS which requires testing for accumulated water once every 31 days, but does not require testing after diesel operation.

Based on the above discussion, the staff finds this change acceptable.

TS 4.8.1.1.2.d:

The current specification describes the tests to be performed l

on new diesel fuel oil prior to its addition to the storage tanks.

The i

licensee proposes to move this requirement to the Administrative Controls Section of the TS and to include in Section 4.8.1.1.2.d only a statement that the properties of new oil should be verified and maintained in accordance with the Diesel Fuel Oil Testing Program. The surveillance requirements, ASTM testing standards and acceptance criteria for this program will be included in the Bases Section of the TS as well as in the plant procedures. This proposed change conforms to the Final Policy Statement on TS for relocation to other licensee controlled documents. This change is also consistent with the format of the STS. Based on the above discussion, the staff finds this change acceptable.

TS 4.8.1.1.2.e:

The current specification describes the requirements for testing of the stored diesel fuel oil. Similar to the change for TS 4.8.1.1.2.d, the licensee proposes to relocate the testing of stored diesel fuel oil to the Administrative Controls Section of the TS and have the Diesel Fuel Oil Testing Program included in the Bases Section of the TS and in the plant procedures. This proposed change conforms to the Final Policy Statement on TS for relocation to other licensee controlled documents.

This change is also consistent with the STS.

Based on the above, the staff finds this change acceptable.

TS 4.8.1.1.2.f:

The licensee proposes to delete the current TS:

"At least once per 184 days the diesel generator shall be started

• from ambient conditions (using the keep warm system) using one of the signals specified in 4.8.1.1.2a.4 and accelerated to at least 514 rpm in less than or equal to 12 seconds. The generator voltage and frequency shall be 4160 + 160 - 420 volts and 60 1.2 Hz within 12 seconds after the start signal.

Subsequently verify

-the generator is loaded to an indicated 6000 to 6201 kW** in less than or equal to 60 seconds and operates at a load of 6000 to 6201 kW** for at least 60 minutes." This would be replaced by the following:

"At least once per 184 days verify each diesel generator starts from standby conditions

• and achieves in less than or equal to 12 seconds, a voltage of 4160 + 160 - 420 volts, and a frequency of 60 1.2 Hz using one of the following signals:

1) Manual, or

2) Simulated loss-of-offsite power by itself, or 3) Safety Injection test signal." as the proposed TS.

1

i e

The proposed TS is consistent with recommendations contained in RG 1.9, Revision 3, for the " Fast-Start Test." As described in RG 1.9, Revision 3, this test demonstrates that each EDG starts from standby conditions. This RG i

also suggests verifying that the EDG reaches required voltage and frequency within acceptable limits and time.

Further, the requirement to load the EDG to an indicated 6000 to 6201 kilowatts in less than or equal to 60 seconds can be deleted since the RG no longer recommends that an EDG be fast loaded due to the adverse affect on its reliability. The requirement to accelerate the EDG to at least 514 rps in less than or equal to 12 seconds can be deleted since it is redundant to the requirement to obtain the specified frequency in less

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than or equal to 12 seconds. The proposed changes are also in accordance with TS 3.8.1.7 of the STS. On the basis of this information, the staff finds these changes acceptable.

TS 4.8.1.1.2.a.11:

The licensee proposes to delete from the current TS the surveillance requirement:

" Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's l

recommendations for this class of standby service." The licensee also proposes that this surveillance requirement be relocated to the EDGRP.

This proposed change in EDG inspection is in accordance with RG 1.9, Revision 3, and with the STS; both documents no longer suggest that EDGs be inspected every 18 months. The EDGRP would still require the inspection in conjunction with the manufacturer's recommendations and the incorporation of specific plant experience; however, the inspection would no longer be a TS requirement. Based on this information, the proposed changes are acceptable.

TS 4.8.1.1.2.a.2):

The licensee proposes to delete the following:

" Verifying the diesel generator capability to reject the ESW pump motor load (the largest single emergency load) while maintaining voltage at 4160 + 160 - 420 volts and frequency at 60 5.4 Hz."

The staff expressed concern regarding this deletion since eliminating the EDG single load rejection test is not in accordance with recommendations in RG 1.9, Revision 3, and the STS.

In response to this concern, the licensee provided documentation indicating that the analysis of previous surveillance tests conducted at Wolf Creek Generating Station shows that the frequency and voltage transient from the single-load rejection test is not as severe as the transient from the full-load rejection test.

Previous surveillance test results have shown that the maximum transient values are well within the 4160

+ 160 - 420 volts and 60 5.4 hertz acceptance criteria and are within the steady state criteria of 4160 + 160 - 420 volts and 60 1.2 hertz provided for in the LOCA/SIAS surveillance test.

The proposed addition of a tighter frequency criterion of <65.4 hertz for the full-load rejection test and the requirement that the EDG performance tests results provide steady state operation within 4160 + 160 - 420 volts and 60 i 1.2 hertz is to assure the continued required performance of the EDGs in lieu of performing the single-load rejection test.

For over-frequency conditions, the 65.4 hertz limit being applied to the full-load rejection test is to provide adequate performance for limiting motor overspeed and is equivalent to the previous limit for the single-load rejection test.

O

h. !.

Operation within the steady state criteria provides assurance of adequate I

voltages and frequencies for the continuous operation of the connected loads and specifically for the induction motors.

In addition, licensee provided documentation indicates that the magnitude of the load changes seen by an EDG during load sequencing is greater than two times that of the single-load rejection test.

Further, the sequencing of the largest load occurs late in the load sequencing and is approximately equivalent to the single-load rejection test. The load rejection of the essential service water (ESW) pump motor on an isochronous operating diesel generator results in an acceleration of the shaft and a corresponding increase in frequency. However, the system inertia acts to resist the increase in i

I frequency. Due to the large system inertia which is mostly the emergency l

diesel and generator, the speed change is small and is less than that seen during the load sequencing. The starting of the ESW pump motor has a greater I

affect on the EDG because the torque being added to the system is a load and accelerating torque. The licensee also yrsvided EDG single-load rejection test history results, as shown in the attached Table 1 [ Attachment 1(a)]. The information in Table 1 indicates that for EDG single largest load rejection testing, the voltage and frequency changes are well within the acceptance criteria and that there were no significant differences in EDG voltage and frequency changes for any of the 16 tests performed.

To supplement the above information, the licensee provided three strip chart recordings that were obtained during past testing. These recordings indicate EDG voltage and frequency transient responses during a full-load rejection l

test, during a single-load rejection test, and during loading of an ESW pump motor.

The recordings clearly indicate that the voltage and frequency swings (transient responses) that occur during loading of the ESW pump motor (single largest load) are much greater than the swings during the rejection tests and indicate that the connected load can handle the transient resulting from the single-load rejection test.

In addition, the recordings clearly indicate that the voltage and frequency swings for a single-load rejection test are within the steady-state acceptance criteria values at all times during the transient.

The licensee also revised the TS Bases Section to include the following.

Through a plant procedure, the ESW pump starting transient during the LOCA sequencing test, Technical Specification 4.8.1.1.2.g.4.d, will be demonstrated to be within a minimum voltage of 3120 Vac and recover to 3680 Vac within 3 seconds and to be within a maximum voltage of 4784 and recover to 4320 Vac within 2 seconds. This acceptance criteria is based on RG 1.9, Revision 3, Section 1.4 and past trending of ESW pump motor starting transient performance.

Since, in part, the single-load rejection test is to verify satisfactory response of the EDG voltage regulator and governor when removing EDG electrical loading, this added commitment provides further assurance that this response is maintained.

I Based on the above information, the staff concludes that the proposed TS change is acceptable.

I

D.

TS 4.8.1.1.2.o.3) (Renumbered TS 4.8.1.1.2.o.11):

The licensee proposes to delete the current TS:

" Verifying the diesel generator capability to reject a

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load of 6201 kW without tripping. The generator voltage shall not exceed 4784 volts during and following the load rejection." This would be replaced with the following:

" Verifying each diesel generator operating at a power factor between 0.8 and 0.9 does not trip on overspeed and voltage does not exceed 4784 volts and frequency does not exceed 65.4 Hz following a load rejection of 5580 to 6201 kW**."

The following footnote would also be added: "**This surveillance shall not be performed in Modes 1 or 2 and credit may be taken for unplanned events that satisfy this requirement."

The proposed changes result in a TS that is in accordance with recommendations contained in RG 1.9, Revision 3, for the " Full-Load Rejection Test." As described in this RG, this test is to demonstrate an EDG's capability to reject a load equal to 90 to 100 percent of its continuous rating (5580-6201 kilowatts) while operating at a power factor between 0.8 and 0.9 t

and verifying that the voltage requirements are met and that the EDG does not trip on overspeed.

The proposed addition of the footnote that does not allow this surveillance requirement to be performed in Modes 1 or 2 is based on the recognition that the performance of this surveillance requirement during operation with the reactor critical could cause perturbations in the electrical distribution systems that could challenge continued steady-state operation and, as a result, unit safety systems. Based on the above discussion, the staff finds the proposed changes are acceptable.

)

TS 4.8.1.1.2.o.4) (Renn=hered TS 4.8.1.1.2.o.2)):

The following would be deleted:

" Simulating a loss of offsite power by itself, and a) Verifying deenergization of the emergency busses and load shedding from the emergency busses, and b) Verifying the diesel starts *** on the auto start signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto connected shutdown loads through the shutdown i

sequencer and operates for greater than or equal to 5 minutes while its l

generator is loaded with the shutdown loads.

After energization, the steady l

state voltage and frequency of the emergency busses shall be maintained at l

4160 + 160 - 420 volts and 60 1.2 Hz during the test." The following would be added:

" Verifying on an actual or simulated loss-of-offsite power signal l

(LOOP)**:

a) De-energization of emergency busses; b) Load shedding of l

emergency busses; c) The diesel generator auto-starts from standby conditions *** and:

1) energizes permanently connected loads within l

12 seconds, 2) energizes the auto-connected shutdown loads through the l

shutdown sequencer, 3) maintains steady state voltage at 4160 + 160 - 420 l

volts, 4) maintains steady state frequency at 60 1.2 Hz, and 5) operates for l

greater than or equal to 5 minutes while the generator is loaded with the shutdown loads."

The licensee would also add the same "**" footnote identified and addressed above for Renumbered TS 4.8.1.1.2.g.1).

The proposed changes maintain the current surveillance requirement in its entirety.

However, these changes revise the wording for the resulting surveillance requirement to be in accordance with recommendations for the

" Loss-of-Offsite Power Test" as described in RG 1.9, Revision 3.

Also, these changes are consistent with Surveillance Requirement 3.8.1.11 of the STS.

Based on the above discussion, the staff finds these changes acceptable.

_ 11 _

TS 4.8.1.1.2.a.5) (Rennaered TS 4.8.1.1.2.a.3)):

The licensee proposes to delete the current TS:

" Verify that on a Safety Injection test signal without loss of offsite power, the diesel generator starts

• on the auto start signal i

and operates on standby for greater than or equal to 5 minutes; and the i

offsite power source energizes the auto connected emergency (accident) load through the LOCA sequencer. The generator voltage and frequency shall be 4160 + 160 - 420 volts and 60 1.2 Hz within 12 seconds after the auto start signal; the generator steady state generator voltage and frequency shall be maintained within these limits during this test;...."

This would be replaced with the following:

" Verifying on an actual or simulated Safety Injection Actuation Signal (SIAS)** that each diesel generator auto-starts from the i

standby condition

• and:

a) achieves a voltage of 4160 + 160 - 420 volts in less than or equal to 12 seconds after the auto-start signal; b) achieves a i

frequency of 60 1.2 Hz in less than or equal to 12 seconds after the l

auto-start signal; c) operates on standby for greater than or equal to 5 minutes; d) the offsite power source energizes the auto-connected (accident) i loads through the LOCA sequencer." The same "**" footnote provided for j

l Renumbered TS 4.8.1.1.2.g.1) would be added to the replacement TS.

l The proposed changes maintain the current surveillance requirement in its entirety. The wording for the added surveillance requirement is also consistent with that in the STS. The changes also result in a surveillance requirement, that is in accordance with the recommendations provided in RG 1.9, Revision 3, for the "SIAS Test." The justification for adding the "**"

footnote is the same as provided above for Renumbered TS 4.8.1.1.2.g.1).

On this basis, the proposed changes are acceptable.

TS 4.8.1.1.2.a.6) (Renneered TS 4.8.1.1.2.a.4)):

The licensee proposes to delete the current TS:

" Simulating a loss of offsite power in conjunction with a Safety Injection test signal, and:

a) Verifying deenergization of the emergency busses and load shedding from the emergency busses; b) Verifying the diesel starts

• on the auto start signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto-connected emergency (accident) loads through the LOCA sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 + 160 - 420 volts and 60 1.2 Hz 4

during this test; and c) Verifying that all automatic diesel generator trips, except high Jacket coolant temperature, engine overspeed, low lube oil pressure, high crankcase pressure, start failure relay, and generator differential, are automatically bypassed upon loss of voltage on the emergency bus concurrent with a Safety Injection Actuation signal." This would be replaced with the following:

" Verifying on a simulated loss-of-offsite power in conjunction with a simulated Safety Injection Actuation Signal (SIAS)**

that each diesel generator auto-starts from the standby condition

• and:

a) achieves a voltage of 4160 + 160 - 420 volts in less than or equal to 12 seconds after the auto-start signal; b) achieves a frequency of 60 1.2 Hz in less than or equal to 12 seconds after the auto-start signal; c) de-i energization of the emergency busses and load shedding from the emergency busses; d) energizes the emergency busses with permanently connected loads j

within 12 seconds, energizes the auto-connected emergency (accident) loads through the LOCA sequencer; e) operates for greater than or equal to 5 minutes w

e

while its generator is loaded with emergency loads." The licensee also proposes to add in the replacement TS the same "**" footnote as provided above for Renumbered TS 4.8.1.1.2.g.1).

The proposed changes result in a surveillance requirement that is in accordance with recommendations for the " Combined SIAS and LOOP Tests" as described in RG 1.9, Revision 3.

The resulting surveillance requirement retains the current TS in its entirety, excluding verifying that all automatic diesel generator trips (except the identified ones) are automatically bypassed upon loss of voltage on the emergency bus concurrent with a SIAS.

The exclusion is relocated to Renumbered TS 4.8.1.1.2.g.5) and is addressed below.

The justification for the addition of the "**" footnote is the same as provided above for Renumbered TS 4.8.1.1.2.g.1).

On this basis, the proposed changes are acceptable.

Renumbered TS 4.8.1.1.2.a.5):

The licensee proposes to add the following as the renumbered TS.

" Verifying each diesel generator's automatic trips are bypassed upon the simulated SIAS and LOOP combined test ** except:

a) High

)

jacket coolant temperature; b) Engine overspeed; c) Low lube oil pressure; d) High crankcase pressure; e) Start failure relay; f) Generator differential current." The licensee also proposes to add the same "**" footnote as provided above for Renumbered TS 4.8.1.1.2.g.1).

As proposed, this surveillance requirement is in accordance with the recommendations for the " Protective Trip Bypass Test" as described in RG 1.9, Revision 3.

The proposed surveillance requirement is also consistent with SR 3.8.1.13 in the STS. The justification for adding the "**" is as previously provided above for Renumbered TS 4.8.1.1.2.g.1).

Thus, the proposed TS is acceptable.

TS 4.8.1.1.2.a.7) (Renumbered TS 4.8.1.1.2.a.6)):

The licensee proposes to delete the current TS:

" Verifying the diesel generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall be loaded to an indicated 6600 to 61121 kW** and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to an indicated 6000 to 6201 kW.**

The generator voltage and frequency shall be 4160 + 160 -

420 volts and 60 + 1.2 Hz, - 3 Hz within 12 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within 4160 + 160 - 420 volts and 60 1.2 Hz during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, perform Specification 4.8.1.1.2.g.6b*;"

This would be replaced by the following:

" Verifying full-load carrying capability of the diesel generator at a power factor between 0.8 and 0.9 for an interval of not less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at 5580 to 6201 kW (indicated)**.

The generator voltage and frequency shall be maintained within 4160 + 160 - 420 volts and 60 1.2 Hz during this test;...."

The added TS would have the following footnote:

"**This surveillance shall not be performed in Modes 1, or 2 and credit may be taken for unplanned events that satisfy this requirement."

The proposed changes result in a surveillance requirement that is in part consistent with the suggestions for the " Endurance and Margin Test" as described in RG 1.9, Revision 3.

However, the requirement to operate each EDG

1.

o l

for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at 105 to 110 percent of the continuous rated load as is suggested j

in RG 1.9, Revision 3, and currently required is not being proposed.

The j

staff expressed concern regarding this exception.

In response to this concern, the licensee documents that the EDGs at the Wolf Creek Generating i

Station utilize Colt-Pielstick PC 2.5V 14 cylinder engines.

The generator ratings are 6201 kilowatts continuous, 6635 kilowatts for 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, 3

6821 kilowatts for 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br />, and 7441 kilowatts for 30 minutes. All of these J

ratings are at a power factor of 0.8.

In addition, the licensee documents that the worst-case accident bus loading occurs during a station blackout, e

j cold shutdown conditions, with engineered and non-engineered safety features loads connected.

The bus loading under these conditions is 5822 kilowatts; j

without non-engineered safety features loads connected, the bus loading is 4556 kilowatts. Under LOCA conditions, during the recirculation phase, the maximum load is 5440 kilowatte and with only engineered safety features loads connected, the total bus load is 52s8 kilowatts.

Further, the licensee documents that at the continuous rated load of an EDG, the normal fuel rack position is 47 to 49 millimeters. At the 110 percent power level, the fuel rack position is 51 to 52 millimeters. A total of 75 millimeters of fuel rack movement is available; however, a mechanical stop prevents movement in excess of 55 millimeters.

The ability of the governor actuator and fuel rack mechanism to move rapidly to the maximum fuel position is demonstrated each time a successful fast start of the EDG is performed. This indicates that the engine can produce the horsepower necessary for the 110 percent power level.

l In addition, the relationship between high loads and wear has been established for typical piston engine applications, and engine manufacturers have indicated that aging and wear significantly increase after 95 percent of the j

3 i

continuous load rating is achieved. As a result of the staff's concern, the j

licensee also added the following to the proposed TS:

" Verify the diesel l

generator operates for 1 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded to an indicated 6600 to 6821 kW if auto connected loads increase above 6201 kW."

In addition, the following

"****" footnote was also added to the proposed TS:

"**** This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring or momentary variations i

due to changing bus loads shall not invalidate this test." The above exception to RG 1.9, Revision 3, is acceptsble on the bases of the Wolf Creek i

Generating Station emergency bus loading, the rated EDG capacity, the I

potential for increase EDG aging and wearing, and the added TS requirement of verifying the diesel generator operates for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> loaded to an indicated i

105 to 110 percent of continuous rated load if auto connected loads increase i

above 6201 kW.

i Justification for adding the "**" footnote is the same as provided above for Renumbered TS 4.8.1.1.2.g.1).

The "****" footnote is added to provide guidance to avoid routine overloading of the engine. The proposal also deletes the hot restart test from the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> endurance and margin test and adds this test as Renumbered TS 4.8.1.1.2.g.7).

Justification for this l

deletion and addition is provided below in Renumbered TS 4.8.1.1.2.g.7).

)

On the bases of the above information, the proposed changes are acceptable.

4

m _.._ _._ _ _. _

t Reni=hered TS 4.8.1.1.2.a.7):

The licensee proposes to add the following:

" Verifying the diesel generator's hot restart capability by operating the diesel generator for greater than or equal to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at an indicated load of 5580 to 6201 kW, shutting down the diesel generator and restarting it within 5 minutes.

On restart, the diesel generator voltage and frequency shall be i

4160 + 160 - 420 volts and 60 1.2 Hz within 12 seconds after the start signal;...."

As proposed by the licensee, the hot restart test is being decoupled from the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> endurance and margin test. As suggested in RG 1.9, Revision 3, the

" Hot Restart Test" demonstrates the hot restart functional capability at full-load temperature conditions by verifying that an EDG starts on a manual or autostart signal, attains the required voltage and frequency within acceptable limits and time, and operates for longer than 5 minutes.

RG 1.9 does not specifically indicate that the test should be performed after the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> endurance test although it does indicate that the test may be performed at that time.

In addition, the STS allows the " Hot Restart Test" to be performed within 5 minutes of shutting down the EDG anytime after it has l

operated for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at full load conditions. The 2-hour minimum operating time at full load conditions is based on EDG manufacturers' recommendations as discussed in the Bases section for Surveillance Requirement 3.8.1.15 of the STS. Therefore, this proposed change is in accordance with recommendations contained in RG 1.9, Revision 3, and the STS. Therefore, the staff finds this change acceptable.

TS 4.8.1.1.2.a.8):

The licensee proposes to delete the following:

" Verifying that the auto-connected loads to each diesel generator do not exceed 6201 kW;...."

The proposed deletion of this TS is consistent with information provided in RG 1.9, Revision 3, and the STS in that these documents do not contain reconunendations addressing such a surveillance requirement.

In addition, the bus loading calculations for the Wolf Creek Generating Station indicate that the worst scenario emergency bus loading would be 5822 kilowatts which is approximately 94 percent of the rated continuous load for each EDG.

Furthermore, the auto-connected bus loadings are to be monitored and trended by the EDGRP with the electrical bus load growth being controlled by an Electrical Load Growth Program.

j 1

Based on the above, the proposed change is acceptable.

i TS 4.8.1.1.2.c.9) (Reni=hered TS 4.8.1.1.2.a.8):

The licensee proposes to add the following "***" footnote to this TS:

"***This surveillance shall not be performed in Modes 1, 2, 3, or 4 and credit may be taken for unplanned events that satisfy this requirement."

The addition of this note results in this surveillance requirement being j

consistent with Surveillance Requirement 3.6.1.16 of the STS. This surveillance requirement is not performed in Modes 1, 2, 3, or 4 because it removes a required offsite circuit from service, perturbs the electrical l

distribution system, and challenges safety systems. Thus, this proposed addition is acceptable.

8-,

j' l

TS 4.8.1.1.2.h:

The licensee proposes to delete the current TS:

"At least once per 10 years or after any modifications which could affect diesel i

generator interdependence by starting ** both diesel generators simultaneously, i

during shutdown, and verifying that both diesel generators accelerate to at l

least 514 rps in less than or equal to 12 seconds; and".

It would be replaced i

with the following:

"At least once per 10 years verify that when started i

simultaneously from standby conditions,** each diesel generator achieves in less than or equal to 12 seconds, a voltage of 4160 + 160 - 420 volts and a frequency of 60 1.2 Hz."

i For these proposed changes, the licensee provided documentation that indicated i

that the elimination of the requirement to perform this surveillance after any modifications that could affect the EDG interdependence is justified based on the ability of the Wolf Creek Generating Station modification process to detect concerns related to interdependence of the EDGs. The staff expressed l

concern regarding eliminating this TS after any modification that could affect EDG interdependence and, as such, requested the licensee to provide a discussion of how the modification process detects and tracks EDG l

interdependence concerns.

In response to this staff concern, the licensee modified this proposed change and added "or after any modification which could affect diesel generator interdependence" to the replacement TS.

The replacement of the requirement to accelerate the EDG to at least 514 RPM

{

in less than or equal to 12 seconds with voltage and frequency requirements is justified since the RPM requirement is redundant to the frequency requirement.

l Based on the above, the proposed changes for this TS are acceptable.

l TS 4.8.1.1.2.1:

The surveillance requirement in the current TS specifies that i

at least once every 10 years the diesel fuel oil storage tank should be l

drained to remove accumulated sediments and cleaned using a sodium j

hypochlorite solution or equivalent. The licensee proposes to revise this j

surveillance requirement by eliminating the requirement to clean the tank j

using a sodium hypochlorite or equivalent. The reason for this change is that i

currently there exist better cleaning methods and the surveillance l

specification should allow their use. In addition, sodium hypochlorite is no j

longer a viable cleaning agent since it has been classified as a hazardous l

waste.

It is discussed in the Bases as a possible option. The staff finds i

the proposed change acceptable. However, the licensee should refrain from

{

using soap or surfactants as cleaning agents.

I j

3.3 TS Section 4.8.1.1.3 i

The licensee proposes to delete the following:

"Recorts - All diesel generator failures, valid or nonvalid, shall be reported in a Special Report 1

to the Commission pursuant to Specification 6.9.2 within 30 days.

Reports of 1

diesel generator failures shall include the information recommended in j

Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures in the last 100 valid tests (on a per nuclear unit basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of 1

Regulatory Guide 1.108, Revision 1, August 1977."

a

r t.

\\,,

The elimination of this TS requirement is in accordance with the recommendations contained in GL 94-01 as addressed above for TS 4.8.1.1.2a.

In addition, 10 CFR 50.72 and 50.73 provide criteria requiring the notification of the Commission of significant EDG failures.

Therefore, the deletion of this TS requirement is acceptable.

l 3.4 TS Table 4.8.1 Table 4.8.1 would be deleted. This deletion is consistent with proposed changes addressed above for TS 4.8.1.1.2.a and is therefore acceptable.

l 3.5 TS Section 4.8.1.2 For this TS, the licensee proposes to delete "and 4.8.1.1.3" and add the word j

"and."

The proposed deletion of the reference to TS 4.8.1.1.3 (Reports) is necessary to be consistent with the proposal to delete TS 4.8.1.1.3.

The addition.of the word "and" is viewed solely as an editorial change.

Thus, these proposed changes are acceptable.

l 3.6 Bases Section 3/4.8 i

l The licensee proposes to introduce in the current Bases a section describing in greater detail certain surveillance requirements, which were previously i

included in Surveillance Requirements Sections 4.8.1.1.2.d and 4.8.1.1.2.e and l

now are relocated to the Administrative Controls Section and to the plant l

procedures. The Bases will also include a description of the Diesel Fuel l

Testing Program. The requirements of the program included in the Bases deviate in the following instances from the specifications in the current plant's TS and in the STS:

Instead of using " Clear and Bright Pass / Fail Procedures" (ASTM D4176-82) for determining free water and particulate contamination in diesel fuel oil, a centrifuge method is specified (ASTM D1796-83) with the requirement that water and sediment contents should be less than 0.05 percent. The reason for this change is that currently diesel fuel oil may contain a dye which makes the Clear and Bright Test impractical.

In addition to the tests required by the current TS and described in ASTM D1552-79 and D2622-82, analysis for sulfur in diesel fuel oil can be performed by a test based on a non-dispersive X-ray fluorescence spectrometry (ASTM D4294-90). This is a more up-to-date method and would be helpful in monitoring sulfur content in diesel fuel oil. The method could yield results of a comparable accuracy to the other two methods.

In addition, if the sulfur analysis is performed using ASTM D129, as specified by ASTM D975-81, the licensee has requested the use of ion chromatography as an alternative to the gravimetric analysis. This method will also yield acceptable results.

l l

e lt. H i

e In Method A of the ASTM 2276-83 standard for determining total particulate concentration in the stored diesel fuel oil, the licensee proposes to use filter size of 3.0 micron nominal for collecting particles instead of 0.8 micron, specified in the The 0.8 micron size was intended for fuel oils used for i

standard.

For diesel fuel meeting the other applications than diesel.

i criterion of particle concentration of 10 mg/ liter or less, when tested using 3.0 micron filter, is adequate.

All the surveillance requirements and the Diesel Fuel Testing Program described in the Bases, including the specific deviations discussed above, are acceptable because they provide an adequate level of safety and conform to the Final Policy Statement on TS for relocation of TS requirements to other licensee controlled documents. Therefore, the staff finds these changes acceptable.

3.7 TS Section 6.8.4.a The licensee proposes to include in the Administrative Controls Section of the TS a brief description of the Diesel Fuel Test Program, which in the current TS is specified in Surveillance Requirements Sections 4.8.1.1 i

will require both new and stored fuel oils to meet the acceptance criteria 4.8.1.1.2.e.

The when sampled and tested in accordance with the applicable ASTM Standards.

l particulate concentration of the stored fuel oil will be required to be below j

The 10 mg/ liter when tested every 31 days based on ASTM Standard 2276.

I details of the program will be described in Bases Section 3/4.8 of the revised This would allow for the licensee in the TS and in the plant procedures.

future to change the program under 10 CFR 50.59, provided no unreviewed safety The description of the Diesel Fuel Test Program is questions are involved.

The adequate to ensure ccceptable fuel is available for EDG ope with the Final Policy Statement on TS. Therefore, the staff finds thse l

l changes acceptable.

4.0 STATE CONSULTATION

In accordance with the Commission's regulations, the Kansas State Official was The State official had no l

notified of the proposed issuance of the amendment.

comments.

5.0 ENYJRONMENTAL CONSIDERATION The amendment changes a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFRThe Part 20 and changes surveillance requirements.

that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released 1

offsite, and that there is no significant increase in individual or cumulative i

The Commission has previously issued a j

occupational radiation exposure.

I l

!- Q proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (61 FR 25716). Accordingly, the amendment meets 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 the amendment.

6.0 CONCLUSION

The Commission has 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, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.

Attachment:

Table Principal Contributors:

F. Ashe K. Parczewski Date:

August 9, 1996 l

i TABLE I EMERGENCY DIESEL SENERATOR ' SINGLE-LOAD REJECTION TEST" HISTORY Equipment Date steady State Voltage Max.

Voltage Min.

Steady State Hertz Hertz Max.

Number Performed Voltage After Trip After Trip Prior to Trip After Trip KKJ01A 12/17/87 4160 4252 4200 60.1 60.9 KKJ01A 11/26/88 4150 4305 4160 60.4 61 KKJ01A 3/11/90 4160 4305 4242 60.01 60.4 KKJ01A 4/23/90 4200 4095 4042 60 60.4 KKJ01A 11/10/91 4160 4200 4150 60.25 60.6 KKJ01A 11/14/91 4150 4230 4180 60.3 60.6 KKJ01A 5/3/93 4190 4200 4147 60.2 60.4 KKJ01A 10/15/94 4200 4200 4095 60.2 60.4 KKJ01B 12/20/87 4180 4252.5 4200 60.05 60.3 KKJ01B 11/28/88 4160 4252 4200 60.2 60.6 KKJ01B 3/10/90 4150 4305 4253 60 60.4 KKJ01B 5/1/90 4100 4253 4180 60 60.4 KKJ01B 11/11/91 4080 4200 4150 60 60.6 g

M KKJ01B 11/13/91 4080 4042 3990 60 60.2 i

KKJ018 5/4/93 4100 4147 4068 60 60.4 KKJ01B 10/17/94 4100 4042.5 3990 60 60.5

.