ML20237A934

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Proposed Tech Specs,Deleting SR 4.8.1.1.2i.2 for Pressure Test of DG Fuel Oil Sys
ML20237A934
Person / Time
Site: Catawba  Duke Energy icon.png
Issue date: 08/06/1998
From:
DUKE POWER CO.
To:
Shared Package
ML20237A933 List:
References
NUDOCS 9808170245
Download: ML20237A934 (21)
v • d • e


Text

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ATTACHMENT la REVISED CURRENT /ECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 1 1

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j ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

1. At least once per 10 years by:
1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution or its equivalent, and
2) Performi a pressure te t of those p tions of the iesel fuel oil sys m designed to ection III, bsection ND o the ASME gg, Code at a test pressur equal to 11 Qress e.

of the syste design

3) Performing tank wall thickness measurements. The resulting data shall be evaluated and any abnormal degradation will be justified or corrected. Any abnormal degradation will be documented in a report to the Commission.

l 4.8.1.1.3 Reports - (Not Used) 4.8.1.1.4 Diesel Generator Batteries - Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

l a. At least once per 7 days by verifying that:

1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 volts on float charge, and
3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*

l b. At least once per 92 days and within 7 days after a battery discharge  ;

with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that
1) There is no visible corrosion at either terminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60*F.

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  • Two different cells shall be tested each month.

CATAWBA - UNIT 1 3/4 8-9 Amendment No.

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ATTACHMENT lb REVISED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 2

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L ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

1. At least once per 10 years by:
1) Draining each fuel oil storage tank, removing the accumulated l

sediment and cleaning the tank using a sodium hypochlorite l

solution or its equivalent, and

2) Performin a pressure test of th e portion of the didel fuel oil syst designed o Section I, subsec on ND of le ASME

() Code at a test pre ure equal 110% of e system esign hched . (press 1.

3) Performing tank wall thickness measurements. The resulting data shall be evaluated and any abnormal degradation will be justified or corrected. Any abnormal degradation will be documented in a report to the Commission.

4.8.1.1.5 Reports - (Not Used) 4.8.1.1.4 Diesel Generator Batteries - Each diesel generator 125-volt battery

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bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:
1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 volts on float charge, and
3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*
b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:
1) There is no visible corrosion at either terminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60*F.
  • Two different cells shall be tested each month.

CATAWBA - UNIT 2 3/4 8-9 Amendment No.

ATTACHMENT 2a REPRINTED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 1 l

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

1. . At least once per 10 years by:
1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution or its equivalent, and
2) Deleted. l
3) Performing tank wall thickness measurements. The resulting data shall be evaluated and any abnormal degradation will be justified or corrected. Any abnormal degradation will be documented in a report to the Connission.

4.8.1.1.3 Reoorts - (Not Used) 4.8.1.1.4 Diesel Generator Batteries - Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:
1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 volts on float charge, and
3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*
b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:
1) There is no visible corrosion at either terminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60*F.
  • Two different cells shall be tested each month.

CATAWBA - UNIT 1 3/48-9 Amendment No.

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ATTACHMENT 2b REPRINTED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 2 l

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l ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

i. At least once per 10 years by:
1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution or its equivalent, and
2) Deleted. [
3) Performing tank wall thickness measurements. The resulting data shall be evaluated and any abnormal degradation will be justified or corrected. Any abnormal degradation will be documented in a report to the Commission.

4.8.1.1.3 Reoorts - (Not Used) 4.8.1.1.4 Diesel Generator Batteries - L , h diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:
1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 volts on float charge, and
3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*
b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:
1) There is no visible corrosion at either terminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60 F.
  • Two different cells shall be tested each month.

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CATAWBA - UNIT 2 3/48-9 Amendment No.

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l ATTACHMENT 3a REVISED IMPROVED TECHNICAL SPECIFICATIONS SUBMITTAL DOCUMENTATION FOR CATAWBA UNIT 1 l

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SP'OEdh 3.8.I ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

AddnsatMy R. At least once per 10 years by:

/ 1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution or its equivalent, and --

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3) Performin ank wall thickness mea ements. The resulti OL,A.l( data sh be evaluated and any normal degradation wi be justi ed or corrected. Any a mal degradation wil e L_ doc nted in a report to th ommission. J (4.8.f.1.3foorts-DidtUs% _

4.8.1.1.4 Diesel Generator Batteries - Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:
1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 volts on float charge, and
3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*

g)y,3J ty g b. At least once per 92 days and within 7 days after a battery discharge

> with battery terminal voltage below 110 volts, or battery overcharge

" I' D / with battery terminal voltage above 150 volts, by verifying that:

1) There is no visible corrosion at either teminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60*F.

Q Two different cells shal1 be tested each month.

l CATAWBA - UNIT 1 3/48-9 Amendment No.

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Discussian of Changss l

.' SIcticn 3.8 - Electrical Power Systems TECHNICAL CHANGES - REMOVAL 0F DETAILS LA.10 Not used.

LA.11 CTS SR 1.8.1.1.2.1.2 and 4.8.1.1.2.i.3 requires tect: or l measurements on the diesel fuel oil system tanks. These requirements have been moved from the TS to the Selected Licensee Commitments (SLC)(UFSAR Chapter 16) consistent with NUREG-1431.

This level of detail is not necessary for inclusion within the TS.

Changes to the SLC are reviewed and controlled in accordance with the requirements of 10 CFR 50.59. These controls are adequate to assure any change is properly reviewed.

- LA.12 CTS 3.8.1.1 Action c requires an evaluation of the steam driven

! auxiliary feedwater pump to determine OPERABILITY when the plant is in Modes 1, 2, or 3 with steam pressure greater than 600 psig.

ITS 3.8.1 actions require a verification that redundant required l features are operable. The steam driven pump is a redundant l required feature, therefore, the CTS detail has been moved from the TS to the Bases of ITS 3.8.1. This level of detail is not necessary for inclusion within the TS and more appropriate to the Bases. This is consistent with NUREG-1431. Changes to the Bases are reviewed and controlled in accordance with the requirements of 10 CFR 50.59 and the Bases control program as defined in Chapter 5, " Administrative Controls" of the ITS. These controls are adequate to assure any change is properly reviewed.

l LA.13/LA.14 Not used.

LA.15 CTS 3.8.1.2 Action provides detailed instructions for operations of loads over fuel storage pool. These requirements have been moved from the TS to the Selected Licensee Commitments (SLC) l (UFSAR Chapter 16) consistent with NUREG-1431. This level of l detail is not necessary for inclusion within the TS. Changes to i the SLC are reviewed and controlled in accordance with the 1 I l I

I Catawba Units 1 and 2 Page LA - 3 Supplement 7S/6/98l

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l ATTACHMENT 3b REVISED IMPROVED TECHNICAL SPECIFICATIONS SUBMITTAL DOCUMENTATION FOR CATAWBA UNIT 2 i

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) gg G. At least once per 10 years by:

IT%c.s 1 I. 1) Draining each fuel oil storage tank, removing the accumulated I sediment and cleaning the ank using a sodium hypochlorite solution or its equivalent, and ,

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3) Performing tank wall thickness measurements. Theresultind data shall be evaluated and any abnormal degradation will be OO'Ig justified or corrected. Any abnormal degradation will be documented in a report to the Coninission.

Q.8.171.L 4ecort u (N# Used 4.8.1.1.4 Diesel Generator Batteries - Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:
1) The electrolyte level of each battery is at or above the low mark and at or below the high mark,
2) The overall battery voltage is greater than or equal to 125 MA f) volts on float charge, and intra 3.19 /

/ 3) The individual cell voltage is greater than or equal to 1.36 volts on float charge.*

b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:
1) There is no visible corrosion at either terminals or connectors, and
2) The average electrolyte temperature of six connected cells is above 60'F.

(*Twodifferentcellsshallbetestedeachmonth.

CATAWBA - UNIT 2 3/48-9 Amendment No.

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l ATTACHnENT 4 DESCRIPTION OF PROPOSED CHANGES AND TECHNICAL JUSTIFICATION l

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Description of Proposed Changes TS SR 4.8.1.1.2i.2 states, i "Each diesel generator shall be demonstrated OPERABLE at '

least once per 10 years by performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code at a test pressure equal to 110% of the system design pressure." )

Catawba is requesting deletion of SR 4.8.1.1.2i.2 because pressure testing of the diesel generator fuel oil system per l this SR cannot be accomplished for all portions of the system. Testing of this system is presently conducted in ,

accordance with alternatives allowed by ASME Code Case N-498-1. This code case was approved by NRC for use at Catawba in a letter dated February 13, 1995 in response to a relief request submitted by Duke Energy.

Technical Justification I The diesel generator fuel oil system provides for the storage of a seven-day supply of fuel oil for each diesel i generator engine and supplies the fuel oil to the engine, as necessary, to drive the emergency generator. As such, the systcm is classified to the requirements of ASME Section III, Subsection ND. A separate and complete fuel oil storage and transfer system is provided for each diesel generator engine. Major components in the fuel oil system include the fuel oil storage tanks, the fuel oil day tank, pumps, valves, filters, strainers, and piping.

In a letter dated June 22, 1994, Duke Energy submitted a request for relief to propose an alternative examination to the requirements of the ASME Boiler and Pressure Vessel Code,Section XI. Duke Energy requested approval to ,

implement the alternative rules of ASME Section XI Code Case l N-498-1, dated May 11, 1994, " Alternative Rules for 10-Year System Hydrostatic Testing for Class 1, 2, and 3 Systems" pursuant to 10 CFR 50.55a(a) (3) for 10-year hydrostatic testing on Class 3 systems. This code case permits the use of a system pressure test on Class 3 systems in lieu of a hydrostatic test. The NRC subsequently approved Duke Energy's use of this code case in a letter dated February 13, 1995.

There are no safety consequences associated with this proposed amendment. Catawba is already testing the diesel generator fuel oil system in accordance with the alternatives authorized by ASME Code Case N-498-1. Testing

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. a of the fuel oil system according to the provisions of this code case demonstrates the integrity of the system. Catawba maintains that it is unnecessary to include SR 4.8.1.1.21.2 in the TS. Appropriate testing of this system is already required by the ASME Code (as modified by approved relief requests). In addition, SR 4.0.5 manaates that inservice inspection and testing of ASME Code Class 1, 2, and 3 components shall be conducted in accordance with Section XI of the ASME Boiler and Pressure Vessel Code, except where specific written relief has been granted by the NRC. In addition, the diesel generator fuel oil system is fully capable of meeting all technical requirements for operability and is capable of performing all design functions.

The Catawba ITS, as submitted on May 27, 1997, does not contain a surveillance comparable to SR 4.8.1.1.2i.2. The  !

ITS submittal relocates this SR to the Catawba Selected l Licensee Commitments Manual, which is Chapter 16 of the Catawba UFSAR. This level of detail was determined to not be necessary for inclusion in the ITS.

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ATTACHMENT 5 i

NO SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION 1

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No Significant Hazards Consideration Determination The following discussion is a summary of the evaluation of the changes contained in this proposed amendment against the 10 CFR 50.92(c) requirements to demonstrate that all three standards are satisfied. A no significant hazards consideration is indicated if operation of the facility in accordance with the proposed amendment would not:

1. Involve a significant increase in the probability or consequences of an accident previously evaluated, or
2. Create the possibility of a new or different kind of accident from any accident previously evaluated, or
3. Involve a significant reduction in a margin of safety.

First Standard Implementation of this amendment would not involve a significant increase in the probability or consequences of an accident previously evaluated. Approval of this amendment will have no significant effect on accident probabilities or consequences. The diesel generator fuel oil system is not an accident initiating system; therefore, there will be no impact on any accident probabilities by the approval of this amendment. Each unit's diesel generator fuel oil system is currently fully capable of meeting its design basis accident mitigating function. Therefore, there will be no impact on any accident consequences.

Second Standard Implementation of this amendment would not create the possi'ility of a new or different kind of accident from any accident previously evaluated. No new accident causal mechanisms are created as a result of NRC approval of this amendment request. No changes are being made to the plant which will introduce any new accident causal mechanisms.

This amendment request does not impact any plant systems that are accident initiators, since the diesel generator j fuel oil system is an accident mitigating system.

Third Standard Implementation of this amendment would not involve a significant reduction in a margin of safety. Margin of l safety is related to the confidence in the ability of the L fission product barriers to perform their design ! unctions during and following an accident situation. These barriers

include the fuel cladding, the reactor coolant system, and j the containment system. The performance of these fission product barriers will not be impacted by implementation of this proposed amendment. The diesel generator fuel oil system for each unit is already capable of performing as designed. No safety margins will be impacted.

Based upon the preceding analysis, Duke Energy has concluded that the proposed amendment does not involve a significant hazards consideration.

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e ATTACHMENT 6 ENVIRONMENTAL ANALYSIS i

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e-Environmental Analysis Pursuant to 10 CFR 51.22(b), an e" luation of this license amendment request'has been performed to determine whether or not it meets the criteria for categorical exclusion set forth in 10 CFR 51.22 (c) (9) of the regulations.

This amendment to the Catawba Unit 1 and 2 TS deletes SR 4.8.1.1.2i.2 concerning pressure testing of the diesel generator fuel oil system. Pressure testing of this system is already governed by ASME Code requirements.

Implementation of this amendment will have no adverse impact upon the Catawba units; neither will it contribute to any additional quantity or type of effluent bcing available for adverse environmental impact or personnel exposure.

It has been determined there is:

1. No significant hazards consideration,
2. No significant change in the types, or significant increase in the amounts, of any effluents that may be released offsite, and
3. No significant increase in individual or cumulative occupational radietion exposures involved.

Therefore, this amendment to the Catawba TS meets the criteria of 10 CFR 51.22 (c) (9) for categorical exclusion from an environmental impact statement.

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