Text

Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. DC Electrical Re-write
	ML16321A497
Person / Time
Site:	Hatch
Issue date:	11/16/2016
From:	Pierce C; Southern Nuclear Operating Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	NL-16-2109
	Download: ML16321A497 (27)
	v • d • e

~ Southern Nuclear Charles R. Pierce Regulatory Affairs Director 40 Inverness Center Parkway Post Office Box 1295 Birmingham, AL 35242 205 992 7872 tel 205 992 7601 fax crpierce@ southernco.com November 16, 2016 Docket Nos.: 50-321 NL-16-2109 50-366 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Edwin I. Hatch Nuclear Plant Units 1 and 2 Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. "DC Electrical Re-write" Ladies and Gentlemen:

By letter dated August 11, 2015, Southern Nuclear Operating Company (SNC) submitted a license amendment request (LAR) to revise the Technical Specifications (TS) to adopt TSTF-500, "Direct Current (DC) Electrical Re-write", for the Edwin I. Hatch Nuclear Plant (HNP) Units 1 and 2.

There have been several correspondences between SNC and the Nuclear Regulatory Commission staff (NRC) since the original SNC submittal, including an electronic request for additional information (RAI) from NRC on July 13, 2016. SNC responded to that RAI on August 12,2016.

SNC received a subsequent RAI from NRC on October 17, 2016 requesting clarification on some of the SNC responses from the August 12, 2016 letter. Enclosure 1 to this letter provides those responses.

Additionally, some revised TS pages, which resulted from the August 12, 2016 RAI, were provided to NRC via a separate letter on September 20, 2016. The NRC has since requested an adjustment to those pages via an electronic correspondence on September 27, 2016.

Accordingly, Enclosure 2 to this letter provides those marked-up and clean-typed TS pages.

This letter contains no new NRC commitments, if you have any questions, please contact Ken McElroy at 205.992.7369.

U.S. Nuclear Regulatory Commission NL-16-2109 Page-2 Mr. C. R. Pierce states he is Regulatory Affairs Director of Southern Nuclear Operating Company, is authorized to execute this oath on behalf of Southern Nuclear Operating Company and, to the best of his knowledge and belief, the facts set forth in this letter are true.

Respectfully submitted, c.-n~

C. R. Pierce Regulatory Affairs Director CRP/OCV/

,,_11-to and subscr,' ed before me this .J..JL- day of ,Yeo\,) &ee.~ ,2016.

My commission expires: /{)- f- Z.o I 1

Enclosures:

1. Response to Request for Additional Information

2. Marked- Up and Clean Typed Technical Specifications Pages cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Best, Executive Vice President & Chief Nuclear Officer Mr. D. R. Vineyard, Vice President- Hatch Mr. M. D. Meier, Vice President- Regulatory Affairs Mr. D. R. Madison, Vice President- Fleet Operations Mr. B. J. Adams, Vice President- Engineering Mr. G. L. Johnson, Regulatory Affairs Manager- Hatch RType: CHA02.004 U. S. Nuclear Regulatory Commission Ms. C. Haney, Regional Administrator Mr. M. D. Orenak, NRR Project Manager- Hatch Mr. D. H. Hardage, Senior Resident Inspector- Hatch State of Georgia Mr. J. H. Turner, Director- Environmental Protection Division

Edwin I. Hatch Nuclear Plant Units 1 and 2 Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500 Enclosure 1 Responses to Request for Additional Information to NL-16-2109 Response to Request for Additional Information NRC Question #1 On page E-2 of the August 12, 2016, supplemental letter, the licensee provided calculations for the return-to-service (RTS) current (or float current) values for the station service and diesel generator (DG) batteries. The RTS (float) currents (20 amps for the station service batteries and 5 amps for the DG batteries) were calculated using the maximum current limit of the battery chargers as the net charging amps. The NRC staff notes that the licensee did not consider the battery chargers' connected DC loads (steady loads) in the calculation of the RTS current.

In the LAR, the licensee stated that the battery chargers are normally in the float-charge mode. Float charge is the condition in which the chargers are supplying their connected loads while providing adequate current (float current) to maintain their associated batteries to fully charged state.

Since the 20-amp and 5-amp battery float currents were calculated without taking into consideration the loads connected to the battery chargers, please provide data (actual or calculated) that show that the station service batteries and DG batteries are 95% charged with their respective float currents at 20-amp and 5-amp while being supplied by their associated battery chargers operating in the float charge mode.

SNC Response The Return-to-Service (RTS) current values were determined using the process described in the Technical Specification Task Force's (TSTF) response to an NRC Request for Additional Information (RAI) dated August 18, 2008, issued during the TSTF-500 review process. (ADAMs accession number ML082310334). Additionally, this process for determining the RTS limits is supported by NRC commissioned confirmatory testing published as NUREG/CR-7148 (ADAMs accession number ML12313A413).

A bounding analysis approach was used to capture when the maximum amount of charge is contained under the exponential curve. The effect of connected loads is addressed in another part of the calculations. A sample calculation considering the effect of the connected loads for one of the HNP station service batteries is described below. A tabulation of similar data for the remaining safety related HNP batteries follows the example.

Station Service Battery 1A is used for this example. Net charging amps including consideration of the connected loads totaling 269 amps results in a reduced net charging current of 171 amps versus the full current limit rating of 440 amps.

(440- 269) amps= 171 amps. The upper limit of the exponential curve time constant is 3.0 hours0 days 0 hours 0 weeks 0 months based on actual test data. The product of the net charging current and the time constant (171

3) gives the calculated re-charge amp-hours of 513 Ah under the exponential decay curve. The Total Re-charge amp-hours is assumed to be the nominal8-hour rating of the battery (2030 Ah). The percentage of the charge under the exponential curve versus total charge is calculated as (1 00 * (513/2030)) = 25%. The percentage of charge under the E1-1 to NL-16-2109 Response to Request for Additional Information curve at the RTS amps value is (1 00*20/171) = 11.7% which is in the preferred surveillance range of 2 (13.5%) and 3 (5%) time constants of the exponential curve. Considering the percentage of total charge of the battery of 25% from above, the percentage of charge remaining at the RTS amp-hour limit of 20 amps

=

is determined to be (0.25*11.7%) 3%. Therefore, the battery is 97% recharged (100- 3%) at this point thus confirming the battery is at least 95% recharged including the effects of the connected loads.

Pertinent data and results for the other HNP LCO 3.8.4 batteries are tabulated below. Note: The final row of data in the table was extracted from the previously mentioned NUREG report, Table A-2, page A-7 for comparison purposes.

DC Total Re- Net Exp. Exponential %Total %Recharge System charge Charge Time Ah Charge Ah atRTS (Ah) Amps Con st. under (h) Exp.

SS1A 2030 171 3 513 25% 97%

SS1B 2147 272 3 816 38% 97%

SS2A 1800 180 3 540 30% 97%

SS2B 2147 252 3 756 35% 97%

DG1A 410 65 3 195 48% 96%

DG1B 495 58 3 174 35% 97%

DG1C 410 81 3 243 59% 96%

DG2A 410 69 3 207 50% 96%

DG2C 410 84 3 252 61% 96%

BNL 2050* 180* 3.03 545 27% 97%

Test Note: *Actual Test Value for LCR-33 battery, charger set at 180 amps on tests and a RTS of 20 amps was assumed for this battery. Dedicated design margin for each battery is 5%.

In conclusion. all the station service and DG batteries are shown to be at least 95% charged with their respective float charging currents at 20-amps and 5-amps while supplied by their associated chargers operating in float-charge mode with their connected loads being supplied by the chargers.

NRC Question #2 On page E-6 of the August 12, 2016 supplemental letter, the licensee states, in part:

" ... pilot cells will be selected using voltage and specific gravity to determine those cells that best approximate the condition of the entire battery.

1. Please explain, with an example, how the voltage and specific gravity of cells will be used to determine those cells that best approximate the condition of the entire battery.

2. In the LAR, the licensee proposed a new TS 5.5.15, "Battery Monitoring and Maintenance." The proposed TS 5.5.15.a.3 states:

E1-2 to NL-16-2109 Response to Request for Additional Information In lieu of RG 1.129, Regulatory Position 2, Subsection 5.2 "Inspections",

the following shall be used: 'Where reference is made to the pilot cell, pilot cell selection shall be based on the lowest voltage cell in the battery.

The licensee's proposed method of selection of battery pilot cell proposed on page E-6 of the August 12, 2016, supplemental letter (i.e., by using voltage and specific gravity), is not in alignment with the method of selection of pilot cell required by the proposed TS 5.5.15.a.3 (i.e., by using the lowest voltage cell).

Please clarify the above discrepancy, and provide a corrected proposed TS 5.5.15.a.3, if necessary.

SNC Response SNC HNP's method of pilot cell selection will be in concert with TSTF-500, as well as with the provisions of the Battery Maintenance and Monitoring Program as written in proposed Section 5.5.15 of the SNC HNP TSTF-500 submittal.

The HNP Station Service 250 VDC battery is actually two 125 VDC batteries, connected in series. The cell selected as the pilot cell for each battery will be the connected cell with the lowest voltage. Since the HNP station service batteries do not exhibit a temperature difference of more than 5 degrees F across the entire battery, temperature will not be a criterion in the selection of the pilot cell.

The Diesel Generator battery, for each DG, consists of one 125 VDC battery.

The pilot cell for these batteries will likewise be the one exhibiting the lowest cell voltage.

Under the TSTF-500 implemented TS, SR 3.8.6.5 (connected cell voltage verification) will have a frequency of once per 92 days, as provided in the Surveillance Frequency Control Program. At each performance of this surveillance, HNP will verify that the pilot cell at that time is still the lowest voltage cell. If not, the pilot cell will be adjusted accordingly.

If at any other time during, for example, routine maintenance on the DG or station service batteries, it is found that the pilot cell is no longer exhibiting the lowest cell voltage on the battery, the pilot cell will be changed accordingly.

Should the HNP battery engineers desire a pilot cell for specific gravity, then a cell will be selected which is sufficiently representative of the specific gravity of all the batteries' cells. This will likely necessitate two pilot cells, one for voltage and one for specific gravity, unless the cell representative of the specific gravity also happens to be the lowest voltage cell.

In any case, for the purposes of proposed Technical Specifications Surveillance Requirement 3.8.6.2 (pilot cell voltage verification) the pilot cell for cell voltage will always represent the lowest voltage cell of the battery.

Accordingly, there is no need for a change to proposed paragraph 5.5.15.a.3.

E1-3 to NL-16-2109 Response to Request for Additional Information NRC Question #3 NRC Question 6 on page E-9 of the August 12, 2016, supplemental letter requested the licensee to justify the deviation from TSTF-500, Revision 2, in regard to the required action and completion time for proposed TS 3.8.4 Condition F (Initially Condition G in the August 11, 2015 submittal). The proposed TS 3.8.4 Condition F relates to an inoperable DG DC battery charger.

However, the licensee's response to NRC Question 6 focuses primarily on inoperable DG DC batteries.

Please provide a response that addresses an inoperable DG DC battery charger explicitly.

SNC Response:

The proposed LCO 3.8.4 Condition F relates to an inoperable DG DC battery or battery charger. The response to NRC Question #6 in the August 12, 2016 letter focused on the DG DC system components, i.e., battery chargers and batteries.

The answer provided in the August 12 response is repeated below with more emphasis on the battery chargers:

The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Completion Time (CT) for one DG DC electrical power subsystem inoperable (current TS 3.8.4 Condition B) is consistent with the CT for one required off-site circuit inoperable concurrent with one required DG inoperable (current HNP TS 3.8.1, Condition E). Similarly, the default Condition Required Actions (RA) for the CT of current TS 3.8.4 Condition B not being met are the same as the default Condition RAs for the CT of current TS 3.8.1 Condition E not being met (MODE 3 in 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , MODE 4 in 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months ). This is significant because the DG batteries provide control and instrumentation power for emergency bus breakers as well as for the DGs. Therefore, the TS Condition of a DG DC system component, such as a DG DC battery charger, being out of service is similar to the Condition of a DG out of service together with an offsite circuit being out of service.

The default Condition for the NUREG-1433 TS marked-up for TSTF-500 requires the associated DG to be declared inoperable if the CT for one DG subsystem battery charger is not met. The HNP TS is therefore more conservative than TSTF-500 for the case of an inoperable DG battery charger. The TSTF would require declaring the associated diesel generator inoperable at the end of the CT, which would provide at least another 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months of operation.

On the other hand, at the end of the CT for Condition B in the TSTF-500 markup (inoperable DG DC battery charger), an immediate shutdown is required.

Furthermore, the requirement to declare the DG inoperable upon failure to meet the Required Actions and Completion Time of an inoperable DG DC battery charger is not a change resulting from TSTF-500; that requirement was in the Standard prior to TSTF-500.

HNP therefore prefers to keep its current licensing basis and enter an immediate shutdown condition rather than declaring the DG inoperable upon failure to meet the CT for an inoperable DG DC battery charger, or battery for that matter.

E1-4 to NL-16-2109 Response to Request for Additional Information These differences do not affect the applicability of the TSTF-500 model SE for HNP.

NRC Question #4 In the LAR, the licensee proposed TS 3.8.4 Condition D and TS 3.8.5 Condition 8 that apply when one or more (two) required station service DC battery charger(s) in one unit become inoperable. The required Actions D.1 and 8.1 associated with TS 3.8.4 Condition D and TS 3.8.5 Condition 8, respectively, require restoring battery terminal voltage to greater than or equal to the minimum established float voltage within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months . According to TSTF-500, required actions D.1 and 8.1 imply that either an alternate means (spare battery charger(s)) is used to restore battery terminal voltage or the inoperable charger(s) is (are) restored to operable status within the 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months time frame.

The licensee stated that station service direct current (DC) system for each HNP unit is made up of two separate subsystems. Each station service DC subsystem includes two 125-volt (V) batteries connected in series and three battery chargers. Two of the three battery chargers are normally in service and one is in standby (spare). A station service subsystem is considered operable per TS Limiting Condition for Operation (LCO) 3.8.4 and LCO 3.8.5 when the two 125-V batteries and two of the three battery chargers are Operable.

a) Since a HNP station service DC subsystem includes only one spare battery charger, please explain how HNP will restore the terminal voltages of both 125-V DC batteries to greater than or equal to the minimum established float voltage (required actions D.1 and 8.1) when two battery chargers are inoperable.

Inoperable station service /diesel generator battery chargers are required to be restored to operable status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . The 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months completion time is a bracketed value in TSTF-500.

b) Please provide the basis for the 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months completion time.

SNC Response a) It is true that the HNP station service DC system includes only one installed spare battery charger per subsystem. However, HNP has previously installed station service battery chargers available on site that could be used for increasing the charge on the battery. Currently, HNP has one available spare charger for the station service system and one available spare charger for the DG DC system.

In a situation where one of the three station service battery chargers was to become inoperable, then a spare charger could be staged nearby the battery room, ready to be connected to the batteries should a second battery charger become inoperable. If the second charger E1-5 to NL-16-2109 Response to Request for Additional Information did become inoperable, that would require entry into the battery charger inoperable Condition (proposed Condition D).

The same is true of the diesel generator (DG) DC system. As described in the August 11, 2015 submittal, there are five subsystems (one for each DG). Each subsystem consists of one 125 VDC battery and two 100% capacity battery chargers. For a DG subsystem to be considered Operable, the battery and one of the two battery chargers must be Operable. If one of the two chargers becomes inoperable, the spare charger could be staged near the diesel battery room, ready to be connected should the second charger become inoperable.

In any case, if terminal voltage cannot be restored to the minimum established float voltage within the 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months Completion Time, default Condition F would be entered. The Unit would be then placed in Mode 3 within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months of entry into Condition F, unless the minimum established float voltage were to be restored within those 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

Also, should the station service or DG battery chargers become inoperable due to an administrative reason, for example, it is discovered that they do not meet a required pedigree, e.g., an IEEE Standard, it may become necessary to declare all the chargers inoperable. In such a case, the chargers, although inoperable, remain available. Therefore, terminal battery voltage could be maintained at the minimum established float voltage, allowing use of the 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months Completion Time to recover Operability.

b) One of the differences between TSTF-360 and TSTF-500 was the Completion Time for inoperable required battery chargers. TSTF-360 had a 7 day CT, TSTF-500 has a 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months CT. However, TSTF-500 provides an allowance for use of a 7 day Completion Time for inoperable required battery chargers, provided a Reg Guide 1.177 and RG 1.174 evaluation, which justifies the extended CT, is performed.

TSTF-500 states:

As stated in a Reviewer's Note in the Bases, a licensee wishing to adopt a Completion Time longer than 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months will need to demonstrate that the Completion Time is appropriate for the plant in accordance with the guidance in RG 1.177 and RG 1.174.

Alternatively, the 7 day Completion Time can be justified by an acceptable method, such as a regulatory commitment that an alternate means to charge the batteries will be available that is capable of being supplied power from a power source that is independent of the offsite power supply. Otherwise, the 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months Completion Time must be adopted.

E1-6 to NL-16-2109 Response to Request for Additional Information SNC chose not to perform the appropriate RG analyses and thus adopted the 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months CT, as is required by the TSTF.

Furthermore, SNC believes that the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months will allow, in many cases, a sufficient period of time to correct a charger problem. The 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months CT is also commensurate with the importance of maintaining the DC system's capability to adequately respond to a design basis event.

NRC Question #5 In the LAR, the licensee proposed relocating the requirements of existing TS Table 3.8.6-1, "Battery Cell Parameters Requirements," to the new Battery Monitoring and Maintenance Program in TS 5.5.15. Existing Table 3.8.6-1 includes Category A, B, and C limits for the battery cell parameters (i.e.,

electrolyte level, float voltage, specific gravity).

Please confirm that the above-mentioned battery cell parameters will continue to be controlled at their current Category A, B, and C levels in the new Battery Monitoring and Maintenance Program, and that action to restore deficient values will be implemented in accordance with the licensee's corrective action program.

SNC Response Section 2.2, item 6 on page A 1-5 of the August 11, 2015 submittal indicates that the above battery parameters will be relocated to the Battery Monitoring and Maintenance Program.

Additionally, SNC confirms that the Category A and B parameters in existing Table 3.8.6-1 of the current Unit 1 and 2 HNP Technical Specifications will be relocated and maintained in the Battery Monitoring and Maintenance Program at their current levels. The Category C limits for specific gravity will no longer have an applicable LCO Condition, however, it also will be relocated to the Battery Maintenance and Monitoring Program. The Category C limits for electrolyte level and float voltage will continue to be monitored and maintained per the requirements of the Technical Specifications.

Actions to restore deficient values of any of the above Category A, B, and C limits will be tracked and implemented in accordance with the SNC corrective action program.

E1-7

Edwin I. Hatch Nuclear Plant Units 1 and 2 Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500 Enclosure 2 Marked-Up and Clean Typed Technical Specifications Pages

DC Sources - Shutdown 3.8.5 3.8 ELECTRICAL POWER SYSTEMS 3.8.5 DC Sources - Shutdown LCO 3.8.5 The following DC electrical power subsystems shall be OPERABLE:

a. The Unit 1 DC electrical power subsystems needed to support the DC electrical power distribution subsystem(s) required by LCO 3.8.8, "Distribution Systems - Shutdown"; and

b. The Unit 2 DG DC electrical power subsystems needed to support the equipment required to be OPERABLE by LCO 3.6.4.3, "Standby Gas Treatment (SGT) System"; and LCO 3.8.2, "AC Sources- Shutdown."

APPLICABILITY: MODES 4 and 5, During movement of irradiated fuel assemblies in the secondary containment.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One reguired batter~ A.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months charger on one or more voltage to greater than reguired DG DC or egual to the minimum subs~stems inoperable. established float voltage.

AND AND The redundant reguired DG A.2 Verif~ battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months DC subs~stem battery and current s; 5 amps.

reguired charger OPERABLE. AND A.3 Restore battery 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

B. One or more reguired B.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months battery chargers on one voltage to greater than reguired station service DC or egual to the minimum subs~stem inoperable. established float voltage.

AND AND The redundant reguired B.2 Verifv batterv float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months HATCH UNIT 1 3.8-31 Amendment No. 227 I

DC Sources - Shutdown 3.8.5 CONDITION REQUIRED ACTION COMPLETION TIME station service DC current < 20 am12s.

subsystem batter:y and required chargers AND OPERABLE.

B.3 Restore batterv 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

AC. One or more required DG AC.1 Declare affected Immediately DC electrical power required feature(s) subsystems inoperable for inoperable.

reasons other than Condition A. OR OR AC.2.1 Suspend CORE Immediately ALTERATIONS.

Required Actions and associated Com12letion AND Times of Condition A not met AC.2.2 Suspend movement of Immediately irradiated fuel assemblies in the secondary containment.

AND (continued)

HATCH UNIT 1 3.8-32 Amendment No. 227 I

DC Sources - Shutdown 3.8.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME AC. (continued) AQ.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND AC.2.4 Initiate action to restore Immediately required DG DC electrical power subsystems to OPERABLE status.

D. One or more reguired D.1 Declare affected Immediate!~

station service DC electrical reguired feature(s) gower subs~stems inogerable.

inogerable for reasons other than Condition B. OR OR D.2.1 Susgend CORE Immediate!~

ALTERATIONS.

Reguired Actions and associated Comgletion AND Times of Condition B not met D.2.2 Susgend movement of Immediate!~

irradiated fuel assemblies in the secondarv containment.

AND D.2.3 Initiate action to Immediate!~

susgend ogerations with a gotential for draining the reactor vessel.

AND D.2.4 Initiate action to restore Immediate!~

reguired station service DC electrical gower subs~stems to OPERABLE status.

HATCH UNIT 1 3.8-33 Amendment No. 227 I

DC Sources - Shutdown 3.8.5 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SA 3.8.5.1 -------------------------------N()TE----------------------------

The following SRs are not required to be performed: SA 3.8.4.7-g_and SA 3.8.4.Q8.

For required Unit 1 DC sources, the following SRs In accordance with are applicable: applicable SRs SA 3.8.4.1 SR 3.8.4.4 SR 3.8.4.7 SA 3.8.4.2 SR 3.8.4.5 SR 3.8.4.8.

SA 3.8.4.3 SR 3.8.4.6 SA 3.8.5.2 For required Unit 2 DC sources, SR 3.8.5.1 of In accordance with Unit 2 Specification 3.8.5 is applicable. Unit 2 SA 3.8.5.1 HATCH UNIT 1 3.8-34 Amendment No. 227 I

DC Sources- Shutdown 3.8.5 3.8 ELECTRICAL POWER SYSTEMS 3.8.5 DC Sources - Shutdown LCO 3.8.5 The following DC electrical power subsystems shall be OPERABLE:

a. The Unit 2 DC electrical power subsystems needed to support the DC electrical power distribution subsystem(s) required by LCO 3.8.8, "Distribution Systems- Shutdown"; and

b. The Unit 1 DG DC electrical power subsystems needed to support the equipment required to be OPERABLE by LCO 3.6.4.3, "Standby Gas Treatment (SGT) System"; and LCO 3.7.4, "Main Control Room Environmental Control (MCREC) System";

LCO 3.7.5, "Control Room Air Conditioning (AC) System"; and LCO 3.8.2, "AC Sources- Shutdown."

APPLICABILITY: MODES 4 and 5, During movement of irradiated fuel assemblies in the secondary containment.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One reguired battery A.1 Restore batte!Y terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months charger on one or more voltage to greater than reguired DG DC or egual to the minimum subsystems inoperable. established float voltage.

AND AND The redundant reguired DG A.2 Verify battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months DC subsystem batte!Y and current s 5 amps.

reguired charger OPERABLE. AND A.3 Restore batte!Y 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

B. One or more reguired B.1 Restore batte!Y terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months batte!Y chargers on one voltage to greater than reguired station service DC or egual to the minimum subsystem inoperable. established float voltage.

AND AND HATCH UNIT2 3.8-31 Amendment No. +&9 I

DC Sources - Shutdown 3.8.5 CONDITION REQUIRED ACTION COMPLETION TIME The redundant reguired B.2 Verif~ batterY float Once Qer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months station service DC currents 20 amQS.

subs~stem batterY and reguired chargers AND OPERABLE.

8.3 Restore batterv 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

AC. One or more required DG AC.1 Declare affected Immediately DC electrical power required feature(s) subsystems inoperable for inoperable.

reasons other than Condition A. OR OR AC.2.1 Suspend CORE Immediately ALTERATIONS.

Reguired Actions and associated ComQietion AND Times of Condition A not met AC.2.2 Suspend movement of Immediately irradiated fuel assemblies in the secondary containment.

AND (continued)

HATCH UNIT2 3.8-32 Amendment No. +69 I

DC Sources - Shutdown 3.8.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME AQ. {continued) AC.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND AC.2.4 Initiate action to restore Immediately required DG DC electrical power subsystems to OPERABLE status.

D. One or more reguired D.1 Declare affected Immediate!~

station service DC electrical reguired feature(s}

gower subs~stems inogerable.

inogerable for reasons other than Condition B. OR OR D.2.1 Susgend CORE Immediate!~

ALTERATIONS.

Reguired Actions and associated Comgletion AND Times of Condition B not met D.2.2 Susgend movement of Immediate!~

irradiated fuel assemblies in the secondary containment.

AND D.2.3 Initiate action to Immed i ate!~

susgend ogerations with a gotential for draining the reactor vessel.

AND D.2.4 Initiate action to restore Immediate!~

reguired station service DC electrical gower subs~stems to OPERABLE status.

HATCH UNIT2 3.8-33 Amendment No. ~ I

DC Sources - Shutdown 3.8.5 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SA 3.8.5.1 -------------------------------NC>TE----------------------------

The following SRs are not required to be performed: SA 3.8.4.7-£_and SA 3.8.4.~.

For required Unit 2 DC sources, the following SRs In accordance with are applicable: applicable SRs SA 3.8.4.1 SR 3.8.4.4 SR 3.8.4.7 SA 3.8.4.2 SR 3.8.4.5 SR 3.8.4.8.

SA 3.8.4.3 SR 3.8.4.6 SA 3.8.5.2 For required Unit 1 DC sources, SA 3.8.5.1 of In accordance with Unit 1 Specification 3.8.5 is applicable. Unit 1 SA 3.8.5.1 HATCH UNIT2 3.8-34 Amendment No. +69 I

DC Sources - Shutdown 3.8.5 3.8 ELECTRICAL POWER SYSTEMS 3.8.5 DC Sources - Shutdown LCO 3.8.5 The following DC electrical power subsystems shall be OPERABLE:

a. The Unit 1 DC electrical power subsystems needed to support the DC electrical power distribution subsystem(s) required by LCO 3.8.8, "Distribution Systems - Shutdown"; and

b. The Unit 2 DG DC electrical power subsystems needed to support the equipment required to be OPERABLE by LCO 3.6.4.3, "Standby Gas Treatment (SGT) System"; and LCO 3.8.2, "AC Sources - Shutdown."

APPLICABILITY: MODES 4 and 5, During movement of irradiated fuel assemblies in the secondary containment.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A One required battery A.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months charger on one or more voltage to greater than required DG DC or equal to the minimum subsystems inoperable. established float voltage.

AND AND The redundant required DG A.2 Verify battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months DC subsystem battery and current s 5 amps.

required charger OPERABLE. AND A.3 Restore battery 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

(continued)

HATCH UNIT 1 3.8-31 Amendment No.

DC Sources - Shutdown 3.8.5 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One or more required B.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months battery chargers on one voltage to greater than required station service DC or equal to the minimum subsystem inoperable. established float voltage.

AND AND The redundant required B.2 Verify battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months station service DC current s 20 amps.

subsystem battery and required chargers AND OPERABLE.

B.3 Restore battery 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

c. One or more required DG C.1 Declare affected Immediately DC electrical power required feature(s) subsystems inoperable for inoperable.

reasons other than Condition A. OR OR C.2.1 Suspend CORE Immediately ALTERATIONS.

Required Actions and associated Completion AND Times of Condition A not met. C.2.2 Suspend movement of Immediately irradiated fuel assemblies in the secondary containment.

AND (continued)

HATCH UNIT 1 3.8-32 Amendment No.

DC Sources - Shutdown 3.8.5 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME C. (continued) C.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND C.2.4 Initiate action to restore Immediately required DG DC electrical power subsystems to OPERABLE status.

D. One or more required D.1 Declare affected Immediately station service DC required feature(s) electrical power inoperable.

subsystems inoperable for reasons other than OR Condition B.

D.2.1 Suspend CORE Immediately OR ALTERATIONS.

Required Actions and AND associated Completion Times of Condition B not D.2.2 Suspend movement of Immediately met. irradiated fuel assemblies in the secondary containment.

AND D.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND D.2.4 Initiate action to restore Immediately required station service DC electrical power subsystems to OPERABLE status.

HATCH UNIT 1 3.8-33 Amendment No.

DC Sources - Shutdown 3.8.5 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.5.1 ---------NOTE The following SRs are not required to be performed: SR 3.8.4.2 and SR 3.8.4.3.

For required Unit 1 DC sources, the following SRs In accordance with are applicable: applicable SRs SR 3.8.4.1 SR 3.8.4.2 SR 3.8.4.3 SR 3.8.5.2 For required Unit 2 DC sources, SR 3.8.5.1 of In accordance with Unit 2 Specification 3.8.5 is applicable. Unit 2 SR 3.8.5.1 HATCH UNIT 1 3.8-34 Amendment No.

DC Sources - Shutdown 3.8.5 3.8 ELECTRICAL POWER SYSTEMS 3.8.5 DC Sources - Shutdown LCO 3.8.5 The following DC electrical power subsystems shall be OPERABLE:

a. The Unit 2 DC electrical power subsystems needed to support the DC electrical power distribution subsystem(s) required by LCO 3.8.8, "Distribution Systems - Shutdown"; and

b. The Unit 1 DG DC electrical power subsystems needed to support the equipment required to be OPERABLE by LCO 3.6.4.3, "Standby Gas Treatment (SGT) System"; and LCO 3.7.4, "Main Control Room Environmental Control (MCREC) System";

LCO 3.7.5, "Control Room Air Conditioning (AC) System"; and LCO 3.8.2, "AC Sources- Shutdown."

APPLICABILITY: MODES 4 and 5, During movement of irradiated fuel assemblies in the secondary containment.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One required battery A.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months charger on one or more voltage to greater than required DG DC or equal to the minimum subsystems inoperable. established float voltage.

AND AND The redundant required DG A.2 Verify battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months DC subsystem battery and current :s; 5 amps.

required charger OPERABLE. AND A.3 Restore battery 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

(continued)

HATCH UNIT2 3.8-31 Amendment No.

DC Sources - Shutdown 3.8.5 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One or more required B.1 Restore battery terminal 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months battery chargers on one voltage to greater than required station service DC or equal to the minimum subsystem inoperable. established float voltage.

AND AND The redundant required B.2 Verify battery float Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months station service DC current s 20 amps.

subsystem battery and required chargers AND OPERABLE.

B.3 Restore battery 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months charger(s) to OPERABLE status.

c. One or more required DG C.1 Declare affected Immediately DC electrical power required feature(s) subsystems inoperable for inoperable.

reasons other than Condition A. OR OR C.2.1 Suspend CORE Immediately ALTERATIONS.

Required Actions and associated Completion AND Times of Condition A not met. C.2.2 Suspend movement of Immediately irradiated fuel assemblies in the secondary containment.

AND (continued)

HATCH UNIT 2 3.8-32 Amendment No.

DC Sources - Shutdown 3.8.5 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME

c. (continued) C.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND C.2.4 Initiate action to restore Immediately required DG DC electrical power subsystems to OPERABLE status.

D. One or more required D.1 Declare affected Immediately station service DC required feature(s) electrical power inoperable.

subsystems inoperable for reasons other than OR Condition B.

D.2.1 Suspend CORE Immediately OR ALTERATIONS.

Required Actions and AND associated Completion Times of Condition B not D.2.2 Suspend movement of Immediately met. irradiated fuel assemblies in the secondary containment.

AND D.2.3 Initiate action to Immediately suspend operations with a potential for draining the reactor vessel.

AND D.2.4 Initiate action to restore Immediately required station service DC electrical power subsystems to OPERABLE status.

HATCH UNIT2 3.8-33 Amendment No.

DC Sources - Shutdown 3.8.5 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.5.1 - - -*-NOTE The following SRs are not required to be performed: SR 3.8.4.2 and SR 3.8.4.3.

For required Unit 2 DC sources, the following SRs In accordance with are applicable: applicable SRs SR 3.8.4.1 SR 3.8.4.2 SR 3.8.4.3 SR 3.8.5.2 For required Unit 1 DC sources, SR 3.8.5.1 of In accordance with Unit 1 Specification 3.8.5 is applicable. Unit 1 SR 3.8.5.1 HATCH UNIT 2 3.8-34 Amendment No.

NL-16-2109, Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. DC Electrical Re-write

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NL-16-2109, Response to Request for Additional Information on Technical Specifications Revision Request to Implement TSTF-500. DC Electrical Re-write

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