Text

Amend 18 to License NPF-86,increasing TS Temp Limit for Cooling Tower Basin Water from 67.3 F to 70.0 F
	ML20125B511
Person / Time
Site:	Seabrook
Issue date:	11/27/1992
From:	Butler W; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20125B514	List: ML20125B511; ML20125B518;
References
	NUDOCS 9212100035
	Download: ML20125B511 (10)
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n UNITED STATES 5

.I NUCLEAR REGULATORY COMMISSION l

WASHINGTON. U C. 20066

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NORTH ATLANTIC ENERGY SERVICE CORPORATION. ET AL.*

DOCKET NO.50-44J J

SEABROOK STATION. UNIT N U AMENDMENT TO FACILITY OPERATING LICENSE l

Amendment No.18 License No. NPF-86 1.

The Nuclear Regulatory Commission (the Commission or the NRC) has found j

that:

A.

The application for amendment flied by the North Atlantic Energy Service Corporation (the licensee), acting for itself and as agent and 4

representative of the 11 other utilities listed below and hereafter referred to as licensees, dated September 30, 1992 and supplemented 4

October 14, 1992, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; i

C.

There is reasonable assurance:

(i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in j

compliance with the Commission's regulations set forth in 10 CFR Chapter 1;

D.

The issuance of this amendment will not be inimical to the common i

defense and security or to the health and safety of the public; and i

E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

)

North Atlantic Energy Service Corporation is authorized to act as agent for the i

North Atlantic Energy Corporation, the Canal Electric Company The Connecticut Light and Power Company, EUA Power Corporation, Hudson Light & Power Department, Massachusetts Municipal Wholesale Electric Company,-Montaup Electric Company, New England Power Company, New Hampshire Electric Cooperative, Inc., Taunton Municipal Light Plant, The United Illuminating Company, and Vermont Electric Generation and Transmission Cooperatia, Inc., and has exclusive responsibility and control over the physical construction, operation and maintenance of the f&cility.

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Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. NPF-86 is hereby amended to read as follows:

(2) Technical Soecifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 18, and the Environmental Protection Plan contained in Appendix B are incorporated into Facility Operating License No. NPF-86. NAESCO shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

This license amendment is effective as of its date of issuance and shall be implemented within 30 days.

FOR THE NUCLEAR REGULATORY COMMISSION i{

4 su Walter R. Butler Director i

l Project Directorate I-3 l

Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: November 27, 1992 V

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O ATTACHMENT TO LICENSI. AMENDMENT NO.18 FACILITY OPERATING LICENSE NO. NPF-86 DOCKET NO. 50-11)

Replace the following pages of the Appendix A Technical Specifications with the attached pages.

The revised pagc: are identified by Amendment number and contain vertical lines indicating the area of change.

Overleaf pages have been provided.*

Remove Insert 3/4 7-13*

J/4 7-14 3/4 7-14 3/4 7-15 3/4 7-15 3/4 7-16*

B 3/4 7-3*

B 3/4 7-3 8 3/4 7-4*

B 3/4 7-4*

B 3/4 7-5 B 3/4 7-5 4

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i BANTSYSTEMS 3/4.7.4 SERVICE WATER SYSTEM LIMITING CONDITION FOR OPERATION 3.7.4 At least two independent service water loops shall be OPERABLE, in-ciuding three OPERABLE pumps in each loop.

APPLICABILITY:

H0 DES 1, 2, 3 and 4.

ACTION:

With one service water pump inoperable, restore the required service i

a.

water pumps to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUT 00WN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , b.

With two service water pumps inoperable, restore at least one of the inoperable service water pumps to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , With two service water pumps within one loop inoperable, restore at c.

least one of the inoperable pumps to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD l

SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

d.

With one cooling tower service water pump inoperable, restore the i

required cooling tower service water pump to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in HOT STANOBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE REQUIREMENTS 4.7.4 At least two Station Service Water loops shall be demonstrated OPERABLE:

At least once per 31 days by) verifying that each valve (manual, a.

power-operatdd, or automatic -servicing safety-related equipment that is not locked, sealed, or otherwise secured in position is in its correct position; and b.

At least once per 18 months during shutdown, by verifying that:

1)

Each automatic valve servicing safety-related equipment actuates to its correct position on its associated Engineered Safety Fea-ture actuation test signal, and-2)

Each of the four Station pumps aligned to the ocean ultimate heat sink (UHS) starts automatically upon loss of or failure to start of the redundant pump within the loop and each of the two pumps aligned to the cooling tower UHS starts an a cooling tower actuation (TA) signal.

SEABROOK - UNIT 1 3/4 7-13

j PLANT SYSTEMS 3/4.7.5 ULTIMATE HEAT SINK l

LIMITING CONDITION FOR OPERATION 3.7.5 The ultimate heat sink (UHS) shall be OPERABLE with:

a.

A service water pumphouse water level at or above 5'-0", minus 36'-0" Mean Sea Level, USGS datum, and b.

A mechanical draft cooling tower comprised of one cooling tower cell with one OPERABLE ** fan and a second cell with two OPERABLE ** fans, and l

a contained basin water level of equal to or greater than 42.15* feet at a bulk average water temperature of less than or equal to 70'F, I

and c.

A portable towsr makeup pump system stored to be OPERABLE for 30 days following a Safe Shutdown Earthquake.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTION:

a.

With the service water pumphouse inoperable, restore the service water pumphouse to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , or be in at leact HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and'in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , b.

With the mechanical draft cooling tower inoperable, restore the cooling tower to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

c.

With the portable tower makeup pump system not stored to be OPERABLE, l

restore the portable tower makeup pump system to its required stored l

conditica within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , or declare the portable tower makeup pump system inoperable, d.

With the portable tower makeup pump system inoperable, continue l

operation and notify the NRC within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months in accordance with the l

procedure of 10 CFR 50.72 of actions or contingencies to ensure an adequate supply of makeup water to the mechanical draft cooling I

tower for a minimum of 30 days, i

With the cooling tower in operation with valves aligned for tunnel heat treat-ment, the tower basin level shall be maintained at greater than or equal to 40.55 feet.

- A fan may be considered OPERABLE if it is capable of being manually started from the main control board.

SEABROOK -- UNIT 1 3/4 7-14 Amendment No.18

PLANT SYSTEMS ULTIMATE HEAT SINK SURVEILLANCE REQUIREMENTS 4.7.5 The ultimate heat sink shall be determined OPERABLE:

a.

At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months by:

1)

Verifying the water level in the service water pumphouse to be at or above 5'-0", minus 36'-0" Mean Sea Level, and 2)

Verifying the water in the mechanical draft cooling tower basin to be greater than or equal to a level of 42.15 feet, b.

At least once per week by verifying that the water in the mechanical.

draft cooling tower basin to be at a bulk average temperature of less than or equal to 70'F.

l c.

At least once per 31 days ty:

1)

Starting from the control room each UHS cooling tower fan that is required to be OPERABLE and operating each of those fans for at least 15 minutes, and 2)

Verifying that the portable tower makeup pump system is stored in its design operational readiness state.

d.

At least once per 18 months by:

1)

Verifying that each automatic valve in the flowpath actuates to its correct position on a Tower Actuation test signal, and

2) _

Verifying the portable tower makeup pump develops a flow greater than or equal to 200 gpm on recirculation test flow.

i SEABROOK - UNIT 1 3/4 7-15 Amendment No.18 l

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PLANT SYSTEMS 3/4.7.6 CONTROL ROOM EMERGENCY MAKEUP AIR AND FILTRATION SUBSYSTEM LIMITING CONDITION FOR OPERATION 3.7.6 Two independent Control Room Emergency Makeup Air and filtration Subsystems shall be OPERABLE.

APPLICABILITY:

All MODES ACTION:

MODES 1, 2, 3 and 4:

With one Control Room Emergency Makeup Air and Filtration Subsystem inoperable, restore the inoperable system to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTOOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

MODES 5 and 6:

a.

With one Control Room Emergency Makeup Air and Filtration Subsystem inoperable restore the inoperable system to OPERABLE status within 7daysorInitiateandmaintainoperationoftheremainingOPERABLE Control Room Emergency Makeup Air and Filtration Subsystem in the filtration / recirculation mode.

4 b.

With both Control Room Emergency Makeup Air and Filtration Subsystems inoperable, or with the OPERABLE Control Room Emergency Makeup Air and Filtration Subsystem, required to be in the filtration / recirculation mode by ACTION a., not capable of being powered by an OPERABLE emergency power source, suspend all operations involving CORE ALTERATIONS or positive reactivity changes.

SURVEILLANCE REQUIREMENTS 4.7.6 Each Control Room Emergency Makeup Air and Filtration Subsystem shall be demonstrated OPERABLE:

a.

At least once 3er 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months by verifying that the control room is maintained selow the limiting equipment qualification temperature in the control room area, b.

At least once per 31 days on a STAGGERED TEST BASIS by initiating, from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 continuous w rs with the heaters operating; SEABROOK - UNIT 1 3/4 7-16

PLANT SYSTEMS BASES 3/4.7.2 STEAM GENERATOR PRESSURE / TEMPERATURE ' IMITATION The limitation on steam generator pressure and temperature ensuMs that the pressure-induced stresses in the steam generators do not exceed the maximum allowable fracture toughness stress limits.

The limitations of 70'F and t

200 psig are based on a steam generator RT of 60'F and are sufficient to NOT prevent brittle fracture 3/4.7.3 PRIMARY COMPONENT COOLING WATER SYSTEM The OPERABILITY of the Primary Component Cooling Water System ensures that sufficient cooling capacity is available for continued operation of safety-related equipment during normal and accident conditions.

The redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the safety analyses.

3/4.7.4 SERVICE WATER SYSTEM The Service Water System consists of two independent loops, each of which can operate with either a service water pump train or a cooling tower pump train.

The OPERABILITY of the Service Water System ensures that sufficient cooling capacity is available for continued operation of safety-related equip-l ment during normal and accident conditions.

The redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions l

used in the safety analyses, which also assumes loss of either the cooling tower l

or ocean cooling.

3_/4. 7. 5 ULTIM*.TE HEAT SINK The limitations on service water pumphouse level, and the OPERABILITY requirements for the mechanical draft cooling tower and the portable tower makeup pump system, ensure that sufficient cocling capacity is available to either:

(1) provide normal cooldown of the facility or (2) mitigate the effects of accident conditions within acceptable limits.

This cooling capabil-l ity is provided by the Atlantic Ocean except during loss of ocean tunnel water flow, when the cooling capability is provided by the r+chanical draft cooling tower with tower makeup using portable pumps.

The limitations on minimum water level and the requirements for mechanical draft cooling tower OPERABILITY are based on providing a 30-day cooling water supply to safety-related equipment without exceeding its design basis tempera-ture and is consistent with the recommendations of Regulatory Guide 1.27,

" Ultimate Heat Sink for Nuclear Plants," March 1974.

The Cooling Tower is normally aligned to allow return flow to initally bypass the tower sprays and return to the basin.

In addition, the control switches for the cooling tower fans are normally maintained in the

" pull-to-lock" position.

Upon receipt of a Tower Actuation Signal, the fans and sprays are manually operated as required..This manual operation, which is governed by procedures, ensures that ice does not buildup on the cooling tower tile fill and fans. Manual action is sufficient to maintain the cooling tower basin at a temperature which precludes equipment damage during the postulated design basis event.

l SEABROOK - UNIT 1 B 3/4 7-3 Amerelment No.18 e

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PLANT SYSTEMS BASES i

3/4.7.6 CONTROL ROOM EMERGENCY MAKEUP AIR AND FILTRATION SUBSYSTEM The OPERABILITY of the Control Room Emergency Makeup Air and Filtration Subsystem ensures thtt:

(1) the allowable temperature for continuous-duty rating for the equipment and instrumentation cooled by this system is not exceeded; and (2) the control room will remain habitable for operations personnel during and following credible accident conditions.

Cumulative operation of the system with the heaters on for 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months over a 31-cay period is sufficient to reduce the buildup of moisture on the adsorbers and HEPA filters.

Heaters run continuously to maintain the relative humidity below 70L The OPERABILITY of this system in conjunction with control room design provisions is based on limiting the radiation exposure to personnel occupying the control room to 5 rems or less whole body, or its equivalent.

This limitation is consistent with the requirements of General Design Criterion 19 of Appendix A, 10 CFR Part 50.

ANSI N510-1980 will be used as a procedural guide for surveillance testing.

3/4.7.7 SNVBBERS All snubbers are required OPERABLE to ensure that the structural integrity of the Reactor Coolant System and all other safety-related systems is main-tained during and following a seismic or other event initiating dynamic loads.

Snubbers are classified and grouped by design and manufacturer but not by size.

Forexample,mechanicalsnubbersutilizingthesamedesignfeaturesof the 2-kip,10-kip and 100-kip capacity manufactured by Company A" are of the same type.

The same design mechanical snubbers manufactured by Company "B" for the purposes of this Technical Specification would be of a different type, as would hydraulic snubbers from either manufacturer.

A list of individual snubbers with detailed information of snubber location and size and of system affected shall be available at the plant in M cordance i

with Section 50.71(c) of 10 CFR Part 50.

The accessibility of each snubber shall be determined and approved by the Station Operation Review Committee (SORC).

The determination shall be based upon the existing radiation levels and the expected time to perform a visual inspection in each snubber location as well as other factors associated with accessibility during plant operations l

(e.g., temperature, atmosphere, location, etc.), and the recommendations of Regulatory Guides 8.8 and 8.10.

The addition or deletion of any hydraulic or i

mechanical snubber shall be made in accordance with Section 50.59 of 10 CFR Part 50.

Surveillance to demonstrate OPERABILITY is by performance of the require-l ments of an approved inservice inspection program.

Permanent or other exemptions from the surveillance program for individual snubbers may be granted by the Commission if a justifiable basis for exemption is presented and, if applicable, snubber life destructive testing was performed to qualify the snubbers for the applicable design conditions at either the com-pletion of their fabrication or at a subsequent date.

Snubbers so exempted SEABROOK - UNIT 1 B 3/4 7-4 l

PLANT SYSTEMS BASES 3/4.7.7 SNUBBERS (Continued) shall be listed in the list of individual snuboers indicating the extent of the exemptions.

The service life of a snubber is established via manufacturer input and information through consideration of the snubber service conditions and associated installation and maintenance records (newly installed snubbers, seal replaced, spring replaced, in high radiation area, in high temperature area, etc.).

The requirement to monitor the snubber sorvice life is included to ensure that the snubbers periodically undergo a performance evaluation in view of their age and operating conditions.

These records will provide statistical bases for future consideration of snubber service life.

3/4.7.8 SEALED SOURCE CONTAMINATION The limitations on removable contamination-for sources requiring leak testing, including alpha emitters, is based on 10 CFR 70.39(a)(3) limits for plutonium.

This limitation will ensure that leakage from Byproduct, Source, and Special Nuclear Material sources will not exceed allowable intake values.

Sealed sources are classified into three groups according to their use, with Surveillance Requirements commensurate with the probability of damage to a source in that group.

Those sources which are frequently handled are required to be tested more often than those which are not.

Sealed sources which are continuously enclosed within a shielded mechanism (i.e., sealed sources within radiation monitoring or boron measuring devie.es) are considered to be stored and need not be tested unless they are removed from the shielded mechanism.

3/4.7.9 (This specification number is not used.)

3/4.7.10 AREA TEMPERATURE MONITORING l

i The area teinperature limitations ensure that safety-related equipment will not be subjected to temperatures in excess of their environmental qualification temperatures.

Exposure to excessive temperatures may degrade equipment and can cause a loss of its OPERABILITY, The temperature limits include an allowance for instrument error of i 4.5'F.

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SEABROOK - UNIT 1 B 3/4 7-5

ML20125B511

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