ML19257C533: Difference between revisions

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| number = ML19257C533
| number = ML19257C533
| issue date = 01/22/1980
| issue date = 01/22/1980
| title = Forwards Response to 791227 Ltr Requesting Info Re Mods to Small Break LOCA Operator Guidelines.Emergency Operating Guidelines Revised to Incorporate 43 F Subcooling Margin. Supporting Data Encl
| title = Forwards Response to Requesting Info Re Mods to Small Break LOCA Operator Guidelines.Emergency Operating Guidelines Revised to Incorporate 43 F Subcooling Margin. Supporting Data Encl
| author name = Clayton F
| author name = Clayton F
| author affiliation = ALABAMA POWER CO.
| author affiliation = ALABAMA POWER CO.
Line 11: Line 11:
| contact person =  
| contact person =  
| document report number = NUDOCS 8001290354
| document report number = NUDOCS 8001290354
| title reference date = 12-27-1979
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 4
| page count = 4
Line 17: Line 18:
=Text=
=Text=
{{#Wiki_filter:.
{{#Wiki_filter:.
e
e Alabama Power i ompany C
* Alabama Power C  i ompany 600 North 18th Struet Post Offree Box 2641 Birmingham, Alabama 35291 Telephone 205 323-5141 JL.k L';;oPvi,7,";ffnt                                                 AlabamaPower
600 North 18th Struet Post Offree Box 2641 Birmingham, Alabama 35291 Telephone 205 323-5141 k
                                                                    !?W SOuttwn elxtr'C Spiem January 22, 1980 Docket Nos. 50-348 and 50-364 Mr. D. F. Ross, Jr., Acting Director Division of Project Management Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.         20555
JL.
L';;oPvi,7,";ffnt AlabamaPower
!?W SOuttwn elxtr'C Spiem January 22, 1980 Docket Nos. 50-348 and 50-364 Mr. D. F. Ross, Jr., Acting Director Division of Project Management Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.
20555


==Dear Mr. Ross:==
==Dear Mr. Ross:==
 
As requested in your {{letter dated|date=December 27, 1979|text=letter dated December 27, 1979}} concerning Modi-fications of Small-Break Loss-Of-Coolant Accident Operator Guidelines, Alabama Power Company submits the enclosed response.
As requested in your letter dated December 27, 1979 concerning Modi-fications of Small-Break Loss-Of-Coolant Accident Operator Guidelines, Alabama Power Company submits the enclosed response.
If you have any further questions in this matter, please advise.
If you have any further questions in this matter, please advise.
Yours very truly, A
Yours very truly, A
F. L. Clayton, Jr.
F. L. Clayton, Jr.
FLCJr/HRF:bhj Enclosure cc:     Mr. R. A. Thomas Mr. G. F. Trowbridge
FLCJr/HRF:bhj Enclosure cc:
                                                                                    $6        \
Mr. R. A. Thomas Mr. G. F. Trowbridge
4 182      1.2 8                                 'n
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* s do.   -
4 6
: 1. 8
'n s 182 2
do.
8001290
8001290


Line 37: Line 43:
These activities will be completed and transmitted to the NRC by the Owner's Group chairman within the 21 day requirement.
These activities will be completed and transmitted to the NRC by the Owner's Group chairman within the 21 day requirement.
Derivation of instrument irors associated with measurement of RCS pressure and temperature for ensuring adequate core subcooling is given below.
Derivation of instrument irors associated with measurement of RCS pressure and temperature for ensuring adequate core subcooling is given below.
Pressure RCS wide range pressure is measured by ITT Barton, Model 763 pressure trans-mitters. Qualification of the transmitters are documented in the Westinghouse document entitled " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" transmitted to Mr. J. F. Stolz on September 29, 1978.
Pressure RCS wide range pressure is measured by ITT Barton, Model 763 pressure trans-mitters.
Qualification of the transmitters are documented in the Westinghouse document entitled " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" transmitted to Mr. J. F. Stolz on September 29, 1978.
The following describes errors in indicated pressure as a result of normal and post-accident environment:
The following describes errors in indicated pressure as a result of normal and post-accident environment:
NOTE:   Wide range span 3000 psig 1
NOTE:
Normal transmitter reference accuracy         = 10.5% of span
Wide range span 3000 psig 1
                                                    =   15 psi Ambient temperature effects on trans-         = +0.5% of span mitter2                                     = Il5 psi Maximum transmitt er drif t2                 = 11.0% of span
Normal transmitter reference accuracy
                                                    = 130 psi Normal instrument accuracy 2                 =  0.5% of span
= 10.5% of span 15 psi
                                                    =   15 psi Ambient tem erature effect on                 = 10.5% of span instrument                                   = 215 psi Maximum instrument drift 2                   =  1.0% of span
=
                                                    = 230 psi Normal indicator accuracy                     = 11.5% of span
Ambient temperature effects on trans-
                                                    = 245 psi 0
= +0.5% of span mitter2
Calibration devices accuracy                 = 10.1% of scale
= Il5 psi Maximum transmitt er drif t2
                                                    =   3 psi 182y129
= 11.0% of span
= 130 psi 2
0.5% of span Normal instrument accuracy
=
15 psi
=
Ambient tem erature effect on
= 10.5% of span instrument
= 215 psi Maximum instrument drift 2 1.0% of span
=
= 230 psi Normal indicator accuracy
= 11.5% of span
= 245 psi 0
Calibration devices accuracy
= 10.1% of scale 3 psi
=
182y129


Allowed calibration tolerances 5             =  0.5% of span
Allowed calibration tolerances 5 0.5% of span
                                                      = 15 osi Maximum indicator reading error               =kc     smallest division
=
                                                      =    of 50 psi
15 osi
                                                      =   12.5 psi Maximum Normal Error                         = 1 d5 (15)2+2 (30)2+(45)2+(12.5)2
=
                                                      =  71.5 psi Maximum post-accident environmental           = +2% of span effect7                                     = I60 psi
Maximum indicator reading error
=kc smallest division of 50 psi
=
12.5 psi
=
Maximum Normal Error
= 1 d5 (15)2+2 (30)2+(45)2+(12.5)2 71.5 psi
=
Maximum post-accident environmental
= +2% of span effect7
= I60 psi
( 1600F and 8 psig steam)
( 1600F and 8 psig steam)
Total indicated error =
Total indicated error 1132 psig
1132 psig Temperature RCS wide range temperature is measured by Rosemount Model 176RS RTDs.       Quali-fication of these RTDs are documented in Westinghouse WCAP 9157. The follow-ing describes errors in indicated temperature as a result of normal environ-ment. Post-accident environmental effects are negligible.
=
NOTE: Span 700 F Process measurement error                     =  3.0% of span
Temperature RCS wide range temperature is measured by Rosemount Model 176RS RTDs.
                                                      = !210F Normal instrument error                       = !0.5% of span
Quali-fication of these RTDs are documented in Westinghouse WCAP 9157. The follow-ing describes errors in indicated temperature as a result of normal environ-ment.
                                                      =  3.5 F Ambient temperature effect on                 =  0.5% of span instrument 2                               = 23.50F Maximum instrument drift                     = tl.0% of span
Post-accident environmental effects are negligible.
                                                      =  7.00F Normal indicator accuracy                     =  0.5% of span
NOTE: Span 700 F Process measurement error 3.0% of span
                                                      =   3.50F Calibration curve accuracy                   = 10.2 F Accuracy of calibration devices               = 10.01% of span
=
                                                      =  .070F Allowed calibration accuracy                 = t0.1% of span
= !210F Normal instrument error
                                                      =  0.70F Calibration error due to non-linearity       =  0.5% of span
= !0.5% of span 3.5 F
                                                      =   3.SOF
=
_2_                    182// 130
Ambient temperature effect on 0.5% of span
=
instrument 2
= 23.50F Maximum instrument drift
= tl.0% of span 7.00F
=
Normal indicator accuracy 0.5% of span
=
3.50F
=
Calibration curve accuracy
= 10.2 F Accuracy of calibration devices
= 10.01% of span
.070F
=
Allowed calibration accuracy
= t0.1% of span 0.70F
=
Calibration error due to non-linearity 0.5% of span
=
3.SOF
=
182//
130
_2_


4 Maximum indicator reading error             = k of smallest division
4 Maximum indicator reading error
                                                      = k of 100F
= k of smallest division
                                                      =  2.SoF Maximum Error                   = t 4(3.5) +(2.5) (21) +(7) +(.2) +(.7) +(.07)
= k of 100F 2.SoF
                                          =  23.4 F NOTES (1) ITT Barton Model 763 technical manual.
=
Maximum Error
= t 4(3.5) +(2.5) (21) +(7) +(.2) +(.7) +(.07) 23.4 F
=
NOTES (1) ITT Barton Model 763 technical manual.
(2) Dick Miller, Engineer - Westinghouse I&C (3) Westinghouse Process Instrumentation Accuracy Requirements and Guidelines (4) FNP Test Equipment Inventory Description (5) Applicable Surveillance Test Procedures (FNP)
(2) Dick Miller, Engineer - Westinghouse I&C (3) Westinghouse Process Instrumentation Accuracy Requirements and Guidelines (4) FNP Test Equipment Inventory Description (5) Applicable Surveillance Test Procedures (FNP)
(6) Main Control Board Instrumentation (7) Westinghouse Report " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" (Submitted to NRC 9/29/78 by letter from T. M. Anderson to J. F. Stolz) extrapolated to 160 F and 8 psig per Dick Miller, Westinghouse I&C.
(6) Main Control Board Instrumentation (7) Westinghouse Report " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" (Submitted to NRC 9/29/78 by letter from T. M. Anderson to J. F. Stolz) extrapolated to 160 F and 8 psig per Dick Miller, Westinghouse I&C.
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                                        }}
_ }}

Latest revision as of 18:09, 3 January 2025

Forwards Response to Requesting Info Re Mods to Small Break LOCA Operator Guidelines.Emergency Operating Guidelines Revised to Incorporate 43 F Subcooling Margin. Supporting Data Encl
ML19257C533
Person / Time
Site: Farley  
Issue date: 01/22/1980
From: Clayton F
ALABAMA POWER CO.
To: Ross D
Office of Nuclear Reactor Regulation
References
NUDOCS 8001290354
Download: ML19257C533 (4)
v • d • e


Text

.

e Alabama Power i ompany C

600 North 18th Struet Post Offree Box 2641 Birmingham, Alabama 35291 Telephone 205 323-5141 k

JL.

L';;oPvi,7,";ffnt AlabamaPower

!?W SOuttwn elxtr'C Spiem January 22, 1980 Docket Nos. 50-348 and 50-364 Mr. D. F. Ross, Jr., Acting Director Division of Project Management Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.

20555

Dear Mr. Ross:

As requested in your letter dated December 27, 1979 concerning Modi-fications of Small-Break Loss-Of-Coolant Accident Operator Guidelines, Alabama Power Company submits the enclosed response.

If you have any further questions in this matter, please advise.

Yours very truly, A

F. L. Clayton, Jr.

FLCJr/HRF:bhj Enclosure cc:

Mr. R. A. Thomas Mr. G. F. Trowbridge

\\

4 6

1. 8

'n s 182 2

do.

8001290

e LNCLOSURE Emergency Operating Procedures have been revised to incorporate the require-ment for ensuring at least a 430F subcooling margin (normal full. power sub-cooling) before terminating safety injection. This is in accordance with the Small-Break Loss-of-Coolant Accident Operator Guidelines approved by NRC by your letter to Mr. Cordell Reed, dated November 5, 1979.

Currently, the non-LOCA transients and E01's are being reviewed for the pur-poses of incorporating a subcooling criterion in the HPI termination criteria.

These activities will be completed and transmitted to the NRC by the Owner's Group chairman within the 21 day requirement.

Derivation of instrument irors associated with measurement of RCS pressure and temperature for ensuring adequate core subcooling is given below.

Pressure RCS wide range pressure is measured by ITT Barton, Model 763 pressure trans-mitters.

Qualification of the transmitters are documented in the Westinghouse document entitled " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" transmitted to Mr. J. F. Stolz on September 29, 1978.

The following describes errors in indicated pressure as a result of normal and post-accident environment:

NOTE:

Wide range span 3000 psig 1

Normal transmitter reference accuracy

= 10.5% of span 15 psi

=

Ambient temperature effects on trans-

= +0.5% of span mitter2

= Il5 psi Maximum transmitt er drif t2

= 11.0% of span

= 130 psi 2

0.5% of span Normal instrument accuracy

=

15 psi

=

Ambient tem erature effect on

= 10.5% of span instrument

= 215 psi Maximum instrument drift 2 1.0% of span

=

= 230 psi Normal indicator accuracy

= 11.5% of span

= 245 psi 0

Calibration devices accuracy

= 10.1% of scale 3 psi

=

182y129

Allowed calibration tolerances 5 0.5% of span

=

15 osi

=

Maximum indicator reading error

=kc smallest division of 50 psi

=

12.5 psi

=

Maximum Normal Error

= 1 d5 (15)2+2 (30)2+(45)2+(12.5)2 71.5 psi

=

Maximum post-accident environmental

= +2% of span effect7

= I60 psi

( 1600F and 8 psig steam)

Total indicated error 1132 psig

=

Temperature RCS wide range temperature is measured by Rosemount Model 176RS RTDs.

Quali-fication of these RTDs are documented in Westinghouse WCAP 9157. The follow-ing describes errors in indicated temperature as a result of normal environ-ment.

Post-accident environmental effects are negligible.

NOTE: Span 700 F Process measurement error 3.0% of span

=

= !210F Normal instrument error

= !0.5% of span 3.5 F

=

Ambient temperature effect on 0.5% of span

=

instrument 2

= 23.50F Maximum instrument drift

= tl.0% of span 7.00F

=

Normal indicator accuracy 0.5% of span

=

3.50F

=

Calibration curve accuracy

= 10.2 F Accuracy of calibration devices

= 10.01% of span

.070F

=

Allowed calibration accuracy

= t0.1% of span 0.70F

=

Calibration error due to non-linearity 0.5% of span

=

3.SOF

=

182//

130

_2_

4 Maximum indicator reading error

= k of smallest division

= k of 100F 2.SoF

=

Maximum Error

= t 4(3.5) +(2.5) (21) +(7) +(.2) +(.7) +(.07) 23.4 F

=

NOTES (1) ITT Barton Model 763 technical manual.

(2) Dick Miller, Engineer - Westinghouse I&C (3) Westinghouse Process Instrumentation Accuracy Requirements and Guidelines (4) FNP Test Equipment Inventory Description (5) Applicable Surveillance Test Procedures (FNP)

(6) Main Control Board Instrumentation (7) Westinghouse Report " Qualification Testing of Barton Pressure and Differential Pressure Transmitters" (Submitted to NRC 9/29/78 by letter from T. M. Anderson to J. F. Stolz) extrapolated to 160 F and 8 psig per Dick Miller, Westinghouse I&C.

kb

_

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