CNL-16-034, TMI Task Action I.D.1 Commitment Closure Regarding Control Room Design Review Special Program

From kanterella
Jump to navigation Jump to search

TMI Task Action I.D.1 Commitment Closure Regarding Control Room Design Review Special Program
ML16069A304
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 02/19/2016
From: James Shea
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-16-034 WBN0-175
Download: ML16069A304 (9)
v • d • e


Text

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381 CNL-1 6-034 February 19, 2016 10 CER 50.4(b)(6) 10 CFR 50.34(b) 10 CFR 2.390 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Watts Bar Nuclear Plant Unit 2 Facility Operating License No. NPF-96 NRC Docket No. 50-391

Subject:

TMI Task Action I.D.1 Commitment Closure Regarding Control Room Design Review Special Program

References:

1. TIVA Letter to NRC, dated July 27, 1983 (ML073530375)
2. NUREG-0847 Supplement 15 "Safety Evaluation Report - Related to the Operation of Watts Bar Nuclear Plant, Units land 2," dated June 1995 In Reference 1, the Tennessee Valley Authority (TIVA) committed to provide the Nuclear Regulatory Commission (NRC) with the following information for the Watts Bar Nuclear Plants (WBN) related to the closure of the Action l.D.1 in NUREG-0660, "NRC Action Plan Developed as a Result of the TMI-2 Accident," regarding the control room design review (CRDR) program:
  • TIVA will submit the results of the additional noise measurements 120 days after fuel loading. As noted in Table 18.1 of Reference 2, "The NRC will review the results of the sound/noise survey, discussed below, which will be completed by TVA 120 days after fuel load, in relation to NUREG-0700 Guideline 6.1.5.5, 'Auditory Environment'."

TVA will take a complete set of color photographs of all panels located in the main control rooms and auxiliary control rooms after the respective units are operational for submittal to NRC 120 days after fuel loading.

Security Sensitive Information -Withhold This page is decontrolled when separated from Enclosure2 Under 10 CFR 2.390 A1?P,,'

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 U.S. Nuclear Regulatory Commission CNL-1 6-034 Page 2 February 19, 2016 provides the results of the WBN Unit 2 main control room noise survey that was performed in accordance with NUREG-0700 Guideline 6.1.5.5, "Auditory Environment,"

requirements. Enclosure 1, Table 3, 'Hazard Assessment Results/Summaries," lists the five WBN Unit 2 main control room locations and the corresponding noise measurement at each location. Page E1-6 depicts the five main control room locations where the noise measurements were taken. Main control room positions 1 and 2 are located behind the horseshoe where normal communications are not performed. Normal control room communications are performed in positions 3, 4, and, 5 and are no more than 7 feet apart. Per NUREG-0700, these background noise levels are within the range where verbal communication should be intelligible using normal to raised voice levels. provides a compact disk (CD) containing the color photographs of the main control room and auxiliary control room panels. The information provided in Enclosure 2 contains security sensitive information in accordance with 10 CFR 73.21(a)(1)(i). Because of the sensitive nature of this submittal, TVA request that this information be withheld from public disclosure in accordance with 10 CFR 2.390.

There are no new regulatory commitments in this letter. If you have any questions, please contact Gordon Arent, Director of Watts Bar Site Licensing, at (423) 365-2004.

Respectfully, J. W. Shea Vice President, Nuclear Licensing

Enclosures:

1. Watts Bar Nuclear Plant, Unit 2 Main Control Room Noise Survey
2. Watts Bar Nuclear Plant, Unit 2 Main Control Room and Auxiliary Control Room Panel Photographs cc (w/o Enclosures):

NRC Regional Administrator - Region II NRC Senior Resident Inspector, Unit 1 NRC Senior Resident Inspector, Unit 2 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 ENCLOSURE 1 Tennessee Valley Authority Watts Bar Nuclear Plant, Unit 2 Main Control Room Noise Survey CNL-1 6-034 El-i of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

SALLIANT Streamlined Assesment Report WBN0-175 Date of Report:

(MM/DD/YY) Date(s) of Assessment: Report No.: ICustomer:

ILocation: Customer Customer

Contact:

Point of [Customer Work Authorization:

021/611/6WBN0-175 TVA Spring City, TN Chad lsaacs 1411167 A. Scope of Assessment:

Alliant Corporation (Alliant) was tasked with conducting an area noise survey of the Unit 2 side of the Main Control Room at Watts Bar Nuclear Plant located in Spring City, TN. The survey was performed to assess where background noise levels met to the requirements of NUREG-0700 paragraph 12.1.2.5-3, which state "Backgroundnoise levels should not exceed 65 dB(A). Additional/Information: Operatorseight feet apart will have to speak loudly to be heard in the presence of a 65 diB(A) backgroundnoise. Therefore, if workstations, display panels, or control interfaces are widely separated in the control room, the background noise limit should be reduced." Alliant placed noise dosimeters in the five locations on the Unit 2 side that are described in Table 3 of this report.

Hazard ifCAS No.,

applicable Assessment Method OELUIM)

(Include Shift-Length Adjusted OEL (Include UIM) Source of OEL Noise NA NA NA NA NA Table 2. Hazard Controls (Check all that apply.)

Engineering PersonalProtective Equipment

[] None [] None El General ventilation El Eye protection; Type:___

El Enclosure of hazards; Type: - El Face protection; Type:

El Barriers to exposure; Type: __ [ Respiratory Protection; Type:.

El Local exhaust ventilation; Type: [El Head protection; Type:___

El Other; Type: __ [ Foot protection; Type:

Administrative El Electrical protective devices; Type:

[] None El Hand Protection; Type:__

El Lengthened rest breaks El Hearing protection; Type:___

El Additional relief workers El Other; Type:

El Exercise breaks to vary body motions Hazard Control Comments:

El Rotating workers El Hazard-specific training; Type: ____

El Other; Type:

B. Findings and Observations

1. During thiswould survey, the A-weighted the sameequivalent noise level (LAeq) was measured at the five locations depicted on the attached layout. LAeq is the noise level that represent amount of noise energy as in the actual noise, effectively giving an average level over the measurement period.
2. The A-weighting filter covers the full audio range - 20 Hz to 20 kHz, and it is used because it most closely represents the response of the human ear at the lower frequency levels.
3. Since area monitoring was performed, not personal monitoring, time-weighted averages are not applicable. The noise levels reported in Table 3 do not represent personal exposures and should not be interpreted as such.
4. Sample positions 3, 4 and 5 are located within the main operating area of the Unit 2 control room, and are no further than seven (7) feet apart from one another. Based upon Figure 12.3, Voice/leve/ as a function of distance and ambient noise level in NUREG-0700, these background noise levels are well within the range where verbal communication should be intelligible using normal or raised voice levels.

E. Report Preparation __________________

____________Report Prepared By ,eReport Approved By Signature __ _ __ _ __ _ __ _

Name Carson Vick ierece A. Douglas, CiH, (SP Date 2119/16 2/19/16 F. Disclaimer This report is for the sole use of Customer and Alliant Corporation. Use of this report by any other parties will be at such party's sole risk, and Alliant Corporation disclaims liability for any such use or reliance by third parties. The results presented in this report are indicative of conditions at the time of the survey. This study does not purport to include every health hazard at this location, and only those areas and exposures specifically mentioned were evaluated.

CNL-1 6-034 E1-2 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

SALLIANT Streamlined Assesment Report WBN0-175 Sample DaeArea Sample LengthMesrdLq No. Dae(Minutes)MesrdLq 1 1114116 Corner of Control Counter of Unit 2 246 66.6 2 1/t4116 Corner of Control Counter of Unit 2 245 66.2 3 1/14/16 North Center of Unit 2 Section of Control Room 244 63.6 4 1/14/16 -Center of Unit 2 Section of Control Room 244 64.3 5 1/'14/16 -Shift Managers Desk - West Side of Unit 2 Section of Control Room 243 63.2 rhis information contained in this report is subject to protection under the Privacy Act of 1974.

ND -Not Detected TWA -Time Weighted Average P -Personal Sample NRR - Noise Reduction Rating NA -Not Applicable PEL -Permissible Exposure Limit dBA - decibel A-weighted filter HCP - Hearing Conservation Program

< -Less Than AL -Action Limit LAeq - A-weighted equivalent noise level CNL-1 6-034 E1-3 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

ii +

I-

<C~TF~9QI '4~L~~ ~c - i'l

~iA FO SNoise SampleMonitori Locationng i

1 I

\

/

7, CNL-1 6- E1-4 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

12 WORKPLACE DESIGN 12.1 Control Room 12.1.2 Control Room Environment 12.1.2.5 Auditory Environment 12.1.2.5-1 General The acoustic design of the control room should ensure that verbal communications among personnel are not impaired; auditory signals are readily detected; and auditory distraction, irritation, and fatigue are minimized.0 700 12.1.2.5-2 Background Noise Background noise should not impair verbal communication between any two points in the main operating area.

Additional Information: Verbal communications should be intelligible using normal or slightly raised voice levels. Figure 12.3 shows the voice levels needed for spoken communication over specified distances in the presence of different levels of background noise. Intelligibility of speech in noise is affected by the frequency spectra of the noise and of the speakers' voices and by the speakers' hearing sensitivity.OOso 16 32 00 16 LU w-. I-.

LU C',.-

~w 8 ozU LU C,

'-'C wS~ ~ z'C I.-

'C 00 w 5 2

0.5 1

0.25 30 40 50 60 70 80 90 100 110 AMBIENT NOISE LEVEL, dB (A)

Figure 12.3 Voice level as a function of distance and ambient noise level 12.1.2.5-3 Background Noise Level Background noise levels should not exceed 65 dB(A).

Additional Information: Operators eight feet apart will have to speak loudly to be heard in the presence of a 65 dB(A) background noise. Therefore, if workstations, display panels, or control interfaces are widely separated in the control room, the background noise limit should be reduced. 070 0 CNL-1 6-034 E1-5 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 480

12 WORKPLACE DESIGN 12.1 Control Room 12.1.2 Control Room Environment 12.1.2.5 Auditory Environment 12.1.2.5-4 Further Reductions Where communications between the main operating area and other control room locations are necessary, and voice transmission systems are not provided, further reductions in background noise should be implemented.°0 °° 12.1.2.5-5 Noise Distractions Noise distractions generated either inside or outside the control room should be minimized.°70 0 12.1.2.5-6 Reverberation Time and Sound Absorption The acoustical treatment of the control room should limit reverberation time to 1 second or less.0 7"0' 590 CNL-1 6-034 E1-6of 6 Security Sensitive Information -W\ithhold Under 10 CER 2.390 This page is decontrolled when separated from Enclosure 2 481

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 ENCLOSURE 2 Tennessee Valley Authority Watts Bar Nuclear Plant, Unit 2 Main Control Room and Auxiliary Control Room Panel Photographs (see attached CD)

CNL-1 6-034 E2-1 of 1 Security Sensitive Information This page is decontrolled when- Withhold separatedUnder from 10 CFR 2.390 Enclosure 2

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381 CNL-1 6-034 February 19, 2016 10 CER 50.4(b)(6) 10 CFR 50.34(b) 10 CFR 2.390 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Watts Bar Nuclear Plant Unit 2 Facility Operating License No. NPF-96 NRC Docket No. 50-391

Subject:

TMI Task Action I.D.1 Commitment Closure Regarding Control Room Design Review Special Program

References:

1. TIVA Letter to NRC, dated July 27, 1983 (ML073530375)
2. NUREG-0847 Supplement 15 "Safety Evaluation Report - Related to the Operation of Watts Bar Nuclear Plant, Units land 2," dated June 1995 In Reference 1, the Tennessee Valley Authority (TIVA) committed to provide the Nuclear Regulatory Commission (NRC) with the following information for the Watts Bar Nuclear Plants (WBN) related to the closure of the Action l.D.1 in NUREG-0660, "NRC Action Plan Developed as a Result of the TMI-2 Accident," regarding the control room design review (CRDR) program:
  • TIVA will submit the results of the additional noise measurements 120 days after fuel loading. As noted in Table 18.1 of Reference 2, "The NRC will review the results of the sound/noise survey, discussed below, which will be completed by TVA 120 days after fuel load, in relation to NUREG-0700 Guideline 6.1.5.5, 'Auditory Environment'."

TVA will take a complete set of color photographs of all panels located in the main control rooms and auxiliary control rooms after the respective units are operational for submittal to NRC 120 days after fuel loading.

Security Sensitive Information -Withhold This page is decontrolled when separated from Enclosure2 Under 10 CFR 2.390 A1?P,,'

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 U.S. Nuclear Regulatory Commission CNL-1 6-034 Page 2 February 19, 2016 provides the results of the WBN Unit 2 main control room noise survey that was performed in accordance with NUREG-0700 Guideline 6.1.5.5, "Auditory Environment,"

requirements. Enclosure 1, Table 3, 'Hazard Assessment Results/Summaries," lists the five WBN Unit 2 main control room locations and the corresponding noise measurement at each location. Page E1-6 depicts the five main control room locations where the noise measurements were taken. Main control room positions 1 and 2 are located behind the horseshoe where normal communications are not performed. Normal control room communications are performed in positions 3, 4, and, 5 and are no more than 7 feet apart. Per NUREG-0700, these background noise levels are within the range where verbal communication should be intelligible using normal to raised voice levels. provides a compact disk (CD) containing the color photographs of the main control room and auxiliary control room panels. The information provided in Enclosure 2 contains security sensitive information in accordance with 10 CFR 73.21(a)(1)(i). Because of the sensitive nature of this submittal, TVA request that this information be withheld from public disclosure in accordance with 10 CFR 2.390.

There are no new regulatory commitments in this letter. If you have any questions, please contact Gordon Arent, Director of Watts Bar Site Licensing, at (423) 365-2004.

Respectfully, J. W. Shea Vice President, Nuclear Licensing

Enclosures:

1. Watts Bar Nuclear Plant, Unit 2 Main Control Room Noise Survey
2. Watts Bar Nuclear Plant, Unit 2 Main Control Room and Auxiliary Control Room Panel Photographs cc (w/o Enclosures):

NRC Regional Administrator - Region II NRC Senior Resident Inspector, Unit 1 NRC Senior Resident Inspector, Unit 2 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 ENCLOSURE 1 Tennessee Valley Authority Watts Bar Nuclear Plant, Unit 2 Main Control Room Noise Survey CNL-1 6-034 El-i of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

SALLIANT Streamlined Assesment Report WBN0-175 Date of Report:

(MM/DD/YY) Date(s) of Assessment: Report No.: ICustomer:

ILocation: Customer Customer

Contact:

Point of [Customer Work Authorization:

021/611/6WBN0-175 TVA Spring City, TN Chad lsaacs 1411167 A. Scope of Assessment:

Alliant Corporation (Alliant) was tasked with conducting an area noise survey of the Unit 2 side of the Main Control Room at Watts Bar Nuclear Plant located in Spring City, TN. The survey was performed to assess where background noise levels met to the requirements of NUREG-0700 paragraph 12.1.2.5-3, which state "Backgroundnoise levels should not exceed 65 dB(A). Additional/Information: Operatorseight feet apart will have to speak loudly to be heard in the presence of a 65 diB(A) backgroundnoise. Therefore, if workstations, display panels, or control interfaces are widely separated in the control room, the background noise limit should be reduced." Alliant placed noise dosimeters in the five locations on the Unit 2 side that are described in Table 3 of this report.

Hazard ifCAS No.,

applicable Assessment Method OELUIM)

(Include Shift-Length Adjusted OEL (Include UIM) Source of OEL Noise NA NA NA NA NA Table 2. Hazard Controls (Check all that apply.)

Engineering PersonalProtective Equipment

[] None [] None El General ventilation El Eye protection; Type:___

El Enclosure of hazards; Type: - El Face protection; Type:

El Barriers to exposure; Type: __ [ Respiratory Protection; Type:.

El Local exhaust ventilation; Type: [El Head protection; Type:___

El Other; Type: __ [ Foot protection; Type:

Administrative El Electrical protective devices; Type:

[] None El Hand Protection; Type:__

El Lengthened rest breaks El Hearing protection; Type:___

El Additional relief workers El Other; Type:

El Exercise breaks to vary body motions Hazard Control Comments:

El Rotating workers El Hazard-specific training; Type: ____

El Other; Type:

B. Findings and Observations

1. During thiswould survey, the A-weighted the sameequivalent noise level (LAeq) was measured at the five locations depicted on the attached layout. LAeq is the noise level that represent amount of noise energy as in the actual noise, effectively giving an average level over the measurement period.
2. The A-weighting filter covers the full audio range - 20 Hz to 20 kHz, and it is used because it most closely represents the response of the human ear at the lower frequency levels.
3. Since area monitoring was performed, not personal monitoring, time-weighted averages are not applicable. The noise levels reported in Table 3 do not represent personal exposures and should not be interpreted as such.
4. Sample positions 3, 4 and 5 are located within the main operating area of the Unit 2 control room, and are no further than seven (7) feet apart from one another. Based upon Figure 12.3, Voice/leve/ as a function of distance and ambient noise level in NUREG-0700, these background noise levels are well within the range where verbal communication should be intelligible using normal or raised voice levels.

E. Report Preparation __________________

____________Report Prepared By ,eReport Approved By Signature __ _ __ _ __ _ __ _

Name Carson Vick ierece A. Douglas, CiH, (SP Date 2119/16 2/19/16 F. Disclaimer This report is for the sole use of Customer and Alliant Corporation. Use of this report by any other parties will be at such party's sole risk, and Alliant Corporation disclaims liability for any such use or reliance by third parties. The results presented in this report are indicative of conditions at the time of the survey. This study does not purport to include every health hazard at this location, and only those areas and exposures specifically mentioned were evaluated.

CNL-1 6-034 E1-2 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

SALLIANT Streamlined Assesment Report WBN0-175 Sample DaeArea Sample LengthMesrdLq No. Dae(Minutes)MesrdLq 1 1114116 Corner of Control Counter of Unit 2 246 66.6 2 1/t4116 Corner of Control Counter of Unit 2 245 66.2 3 1/14/16 North Center of Unit 2 Section of Control Room 244 63.6 4 1/14/16 -Center of Unit 2 Section of Control Room 244 64.3 5 1/'14/16 -Shift Managers Desk - West Side of Unit 2 Section of Control Room 243 63.2 rhis information contained in this report is subject to protection under the Privacy Act of 1974.

ND -Not Detected TWA -Time Weighted Average P -Personal Sample NRR - Noise Reduction Rating NA -Not Applicable PEL -Permissible Exposure Limit dBA - decibel A-weighted filter HCP - Hearing Conservation Program

< -Less Than AL -Action Limit LAeq - A-weighted equivalent noise level CNL-1 6-034 E1-3 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

ii +

I-

<C~TF~9QI '4~L~~ ~c - i'l

~iA FO SNoise SampleMonitori Locationng i

1 I

\

/

7, CNL-1 6- E1-4 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2

12 WORKPLACE DESIGN 12.1 Control Room 12.1.2 Control Room Environment 12.1.2.5 Auditory Environment 12.1.2.5-1 General The acoustic design of the control room should ensure that verbal communications among personnel are not impaired; auditory signals are readily detected; and auditory distraction, irritation, and fatigue are minimized.0 700 12.1.2.5-2 Background Noise Background noise should not impair verbal communication between any two points in the main operating area.

Additional Information: Verbal communications should be intelligible using normal or slightly raised voice levels. Figure 12.3 shows the voice levels needed for spoken communication over specified distances in the presence of different levels of background noise. Intelligibility of speech in noise is affected by the frequency spectra of the noise and of the speakers' voices and by the speakers' hearing sensitivity.OOso 16 32 00 16 LU w-. I-.

LU C',.-

~w 8 ozU LU C,

'-'C wS~ ~ z'C I.-

'C 00 w 5 2

0.5 1

0.25 30 40 50 60 70 80 90 100 110 AMBIENT NOISE LEVEL, dB (A)

Figure 12.3 Voice level as a function of distance and ambient noise level 12.1.2.5-3 Background Noise Level Background noise levels should not exceed 65 dB(A).

Additional Information: Operators eight feet apart will have to speak loudly to be heard in the presence of a 65 dB(A) background noise. Therefore, if workstations, display panels, or control interfaces are widely separated in the control room, the background noise limit should be reduced. 070 0 CNL-1 6-034 E1-5 of 6 Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 480

12 WORKPLACE DESIGN 12.1 Control Room 12.1.2 Control Room Environment 12.1.2.5 Auditory Environment 12.1.2.5-4 Further Reductions Where communications between the main operating area and other control room locations are necessary, and voice transmission systems are not provided, further reductions in background noise should be implemented.°0 °° 12.1.2.5-5 Noise Distractions Noise distractions generated either inside or outside the control room should be minimized.°70 0 12.1.2.5-6 Reverberation Time and Sound Absorption The acoustical treatment of the control room should limit reverberation time to 1 second or less.0 7"0' 590 CNL-1 6-034 E1-6of 6 Security Sensitive Information -W\ithhold Under 10 CER 2.390 This page is decontrolled when separated from Enclosure 2 481

Security Sensitive Information - Withhold Under 10 CFR 2.390 This page is decontrolled when separated from Enclosure 2 ENCLOSURE 2 Tennessee Valley Authority Watts Bar Nuclear Plant, Unit 2 Main Control Room and Auxiliary Control Room Panel Photographs (see attached CD)

CNL-1 6-034 E2-1 of 1 Security Sensitive Information This page is decontrolled when- Withhold separatedUnder from 10 CFR 2.390 Enclosure 2

Retrieved from "https://kanterella.com/w/index.php?title=CNL-16-034,_TMI_Task_Action_I.D.1_Commitment_Closure_Regarding_Control_Room_Design_Review_Special_Program&oldid=2444924"