ML11326A171: Difference between revisions

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| author name = Jevremovic T
| author name = Jevremovic T
| author affiliation = Univ of Utah
| author affiliation = Univ of Utah
| addressee name = Wertz G A
| addressee name = Wertz G
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000407
| docket = 05000407
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=Text=
=Text=
{{#Wiki_filter:150 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 Phone: 801.587.9696 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Utah Docket 50-407 Attention:
{{#Wiki_filter:150                                           S. CentralSalt Campus Dr. MEB 2298 Lake City, UT 84112 Phone: 801.587.9696 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Utah Docket 50-407 Attention: Geoffrey Wertz
Geoffrey Wertz  


==SUBJECT:==
==SUBJECT:==
Request for the Amendment to the University of Utah TRIGA Reactor Technical Specification 3.5, Ventilation System, Specification 1, and to TS 4.4, Confinement, Basis  
Request for the Amendment to the University of Utah TRIGA Reactor Technical Specification 3.5, Ventilation System, Specification 1, and to TS 4.4, Confinement, Basis


==Dear Mr. Wertz:==
==Dear Mr. Wertz:==
The University of Utah TRIGA Reactor (UUTR) reactor staff request a change to the UUTR Technical Specification (TSs). The TSs submitted for license renewal contained two typographical errors. The pressure difference in the specification in TS 3.5, and in the Basis of TS 4.4 was incorrectly stated as 0.1 inches-of-water instead of the correct value of 0.01 inches-of-water.
 
The requested TS changes are described below and the proposed marked-up TSs are attached to this letter.UUTR TS 3.5. Ventilation System, Page 26: Specification 1 currently reads: The pressure difference between the reactor room and outside of the Merrill Engineering Building is larger than 0.1 inches-of-water.
The University of Utah TRIGA Reactor (UUTR) reactor staff request a change to the UUTR Technical Specification (TSs). The TSs submitted for license renewal contained two typographical errors. The pressure difference in the specification in TS 3.5, and in the Basis of TS 4.4 was incorrectly stated as 0.1 inches-of-water instead of the correct value of 0.01 inches-of-water. The requested TS changes are described below and the proposed marked-up TSs are attached to this letter.
Specification I should read: The pressure difference between the reactor room and outside of the Merrill Engineering Building is larger than 0.01 inches-of-water.
UUTR TS 3.5. Ventilation System, Page 26:
UUTR TS 4.4. Confinement.
Specification 1 currently reads:
Basis. Page 42: Currently it reads: The pressure difference between the reactor room and outside of the Merrill Engineering Building should be larger than 0.1 inches-of-water.
The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding is largerthan 0.1 inches-of-water.
This sentence should read: The pressure difference between the reactor room and outside of the Merrill Engineering Building should be larger than 0.01 inches-of-water.
Specification I should read:
APzý1 50 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 THE UNI______
The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding is largerthan 0.01 inches-of-water.
Phone: 801.587.9696 Explanation:
UUTR TS 4.4. Confinement. Basis. Page 42:
-The UUTR TSs in place prior to the license renewal review did not provide a specification for the value of the pressure difference in the reactor room. In the proposed license renewal TSs, we added a numerical value to the specification in order to describe the operation of ventilation system more precisely.
Currently it reads:
Basis-The proposed value of 0.01 inches-of-water is described in SAR Chapter 9.1.4.1 and was also stated correctly in the Basis of UUTR TS 3.5.-Historical readings from the pressure gauge are between 0.03 and 0.05 inches-of-water with the ventilation system in operational mode.-The current TS specification of larger than 0.1 inches-of-water pressure difference is not achievable in the reactor room of the Merrill Engineering Building.
The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding should be largerthan 0.1 inches-of-water.
Thus, the UUTR is currently not able to operate the reactor.The reasons described above explain and justify that the correct TS value for the pressure differential is 0.01 inches-of-water, and not 0.1 inches-of-water.
This sentence should read:
Sincerely, Tatjana evremovic, PhD Chair Professor in Nuclear Engineering and Director UNEP/UNEF The University of Utah Salt Lake City UT 84112 Phone: 801-587-9696 Email: Tatjana.]evremovic(&utah.edu I declare under penalty of perjury that the foregoi g is true and correct.Execu ted on -'/ --- 6[Date /-Date Sign ure 2 i-**50 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 Phone: 801.587.9696 cc: Mayor of Salt Lake City 451 South State Room 306 Salt Lake City, UT 84111 Dr. Thomas Parks Vice president for research 201 S. President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Ms. Karen Langley Director, University of Utah Radiological Health 322 RAB University of Utah Salt Lake City, UT 84112 Dr. Cynthia Furse Associate Vice President for Research 210 President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Dr. Richard Brown Dean, College of Engineering 72 S. Central Campus Dr., 1650 WEB University of Utah Salt Lake City, UT 84112 3}}
The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding should be largerthan 0.01 inches-of-water.
APzý 1
 
50 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 THE UNI______                                               Phone: 801.587.9696 Explanation:
      -   The UUTR TSs in place prior to the license renewal review did not provide a specification for the value of the pressure difference in the reactor room. In the proposed license renewal TSs, we added a numerical value to the specification in order to describe the operation of ventilation system more precisely.
Basis
      -   The proposed value of 0.01 inches-of-water is described in SAR Chapter 9.1.4.1 and was also stated correctly in the Basis of UUTR TS 3.5.
      - Historical readings from the pressure gauge are between 0.03 and 0.05 inches-of-water with the ventilation system in operational mode.
      - The current TS specification of larger than 0.1 inches-of-water pressure difference is not achievable in the reactor room of the Merrill Engineering Building. Thus, the UUTR is currently not able to operate the reactor.
The reasons described above explain and justify that the correct TS value for the pressure differential is 0.01 inches-of-water, and not 0.1 inches-of-water.
Sincerely, Tatjana evremovic, PhD Chair Professor in Nuclear Engineering and Director UNEP/UNEF The University of Utah Salt Lake City UT 84112 Phone: 801-587-9696 Email: Tatjana.]evremovic(&utah.edu I declare under penalty of perjury that the foregoi g is true and correct.
Execu ted on         6[Date
                - '/---                       /-
Date                       Sign ure 2
 
i-*
                *50                       S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 Phone: 801.587.9696 cc:
Mayor of Salt Lake City 451 South State Room 306 Salt Lake City, UT 84111 Dr. Thomas Parks Vice president for research 201 S. President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Ms. Karen Langley Director, University of Utah Radiological Health 322 RAB University of Utah Salt Lake City, UT 84112 Dr. Cynthia Furse Associate Vice President for Research 210 President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Dr. Richard Brown Dean, College of Engineering 72 S. Central Campus Dr., 1650 WEB University of Utah Salt Lake City, UT 84112 3}}

Latest revision as of 12:39, 12 November 2019

Request for Amendment to University of Utah Triga Reactor Technical Specification 3.5, Ventilation System, Specification 1, and to TS 4.4, Confinement, Basis
ML11326A171
Person / Time
Site: University of Utah
Issue date: 11/17/2011
From: Jevremovic T
Univ of Utah
To: Geoffrey Wertz
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML11326A171 (3)
v • d • e


Text

150 S. CentralSalt Campus Dr. MEB 2298 Lake City, UT 84112 Phone: 801.587.9696 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Utah Docket 50-407 Attention: Geoffrey Wertz

SUBJECT:

Request for the Amendment to the University of Utah TRIGA Reactor Technical Specification 3.5, Ventilation System, Specification 1, and to TS 4.4, Confinement, Basis

Dear Mr. Wertz:

The University of Utah TRIGA Reactor (UUTR) reactor staff request a change to the UUTR Technical Specification (TSs). The TSs submitted for license renewal contained two typographical errors. The pressure difference in the specification in TS 3.5, and in the Basis of TS 4.4 was incorrectly stated as 0.1 inches-of-water instead of the correct value of 0.01 inches-of-water. The requested TS changes are described below and the proposed marked-up TSs are attached to this letter.

UUTR TS 3.5. Ventilation System, Page 26:

Specification 1 currently reads:

The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding is largerthan 0.1 inches-of-water.

Specification I should read:

The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding is largerthan 0.01 inches-of-water.

UUTR TS 4.4. Confinement. Basis. Page 42:

Currently it reads:

The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding should be largerthan 0.1 inches-of-water.

This sentence should read:

The pressure difference between the reactorroom and outside of the Merrill EngineeringBuilding should be largerthan 0.01 inches-of-water.

APzý 1

50 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 THE UNI______ Phone: 801.587.9696 Explanation:

- The UUTR TSs in place prior to the license renewal review did not provide a specification for the value of the pressure difference in the reactor room. In the proposed license renewal TSs, we added a numerical value to the specification in order to describe the operation of ventilation system more precisely.

Basis

- The proposed value of 0.01 inches-of-water is described in SAR Chapter 9.1.4.1 and was also stated correctly in the Basis of UUTR TS 3.5.

- Historical readings from the pressure gauge are between 0.03 and 0.05 inches-of-water with the ventilation system in operational mode.

- The current TS specification of larger than 0.1 inches-of-water pressure difference is not achievable in the reactor room of the Merrill Engineering Building. Thus, the UUTR is currently not able to operate the reactor.

The reasons described above explain and justify that the correct TS value for the pressure differential is 0.01 inches-of-water, and not 0.1 inches-of-water.

Sincerely, Tatjana evremovic, PhD Chair Professor in Nuclear Engineering and Director UNEP/UNEF The University of Utah Salt Lake City UT 84112 Phone: 801-587-9696 Email: Tatjana.]evremovic(&utah.edu I declare under penalty of perjury that the foregoi g is true and correct.

Execu ted on 6[Date

- '/--- /-

Date Sign ure 2

i-*

  • 50 S. Central Campus Dr. MEB 2298 Salt Lake City, UT 84112 Phone: 801.587.9696 cc:

Mayor of Salt Lake City 451 South State Room 306 Salt Lake City, UT 84111 Dr. Thomas Parks Vice president for research 201 S. President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Ms. Karen Langley Director, University of Utah Radiological Health 322 RAB University of Utah Salt Lake City, UT 84112 Dr. Cynthia Furse Associate Vice President for Research 210 President Circle, Room 210 University of Utah Salt Lake City, UT 84112 Dr. Richard Brown Dean, College of Engineering 72 S. Central Campus Dr., 1650 WEB University of Utah Salt Lake City, UT 84112 3

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