ML20032E671
| ML20032E671 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 11/17/1981 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20032E672 | List: |
| References | |
| NO-81-1888, NUDOCS 8111200796 | |
| Download: ML20032E671 (5) | |
Text
C h
I Carolina Power & Ligt t Company November 17, 1981 File: NG-3514(B)
Serial No. NO-81-1888 Office of Nuclear Reactor Regulation
-ATTN:
Mr. T. A. Ippolito, Chief Y
' /K United States Nuclear Regulatory Commission
[f >l7
%N Operating Reactors Branch No. 2 fN
('
Washington, D.C.
20555 6'.JLieL g
BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.1 AND 2NOV191981=-
DOCKET NOS. 50-325 AND 50-324 5-u.t og'uGi
]
LICENSE NOS. DPR-71 AND DPR-62 Tf
~/
,/
RESPONSETOREQUESTFORADDITIONALINFORMATION%'#
3 SDV TECHNICAL SPECIFICATION CHANGE' SUBMITTAL ' //q,, d,3
Dear Mr. Ippolito:
SU> DIARY In response to your letter of September 9, 1981, Carolina Power & Light Company (CP&L) transmits the enclosed information to address your questions regarding our scram discharge volume (SDV)
Technical Specifications change request dated November 13, 1980.
~ DISCUSSION You will find enclosed two revised pages each for the Brunswick 1 and 2 Technical Specifications with the changes indicated by vertical lines in the right-hand margins. One page reflects revi-sions resulting from your comments; the other page reflects revisions which make the format more consistent with the Standard Technical Speciffcations. These two pages supercede the comparable pages trans-mitted with our request of November 13, 1980.
ADMINISTRATIVE INFORMATION Since the enclosed changes supplement our November 13, 1980 submittal and are in response to your request for additional information, we believe that no additional license amendment fees are required. Fees were remitted via our July 7, 1981 latter.
OOI s
8111200796 811117T DR ADOCK 05000324' PDR I{
i g,.
j _
=
411 Fayetteville Street
- P. O. Box 1551
- Raleigh, N.' CJ 27602 r.ta"1rm2Tr223rTEnitfr33pc!3l$E][1EN}4W1llP"""7MF'%"#TT
If you should need any additional information, please contact my staff.
Yours very truly,
.- [ [
gf d'. G -
s Ag
)
E E. Utley i
Executive Vice President Power Supply and Engineering & Construction
(
WRM/RMP/lr (5266)
Enclosures Sworn to and subscribed before me this 17th day of November, 1981.
AQath
(
[6 n'l"'I, o Notary Public l
My commission expires: Oct. 4, 1986 l
c'
\\
E isOTARy}
E 5
i l'u n ttC l h
l 5
/,,,,,,,,,,,,, e' s\\
l l
l l
l l
l l
ENCLOSURE 1 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 ADDITIONAL INFORMATION SDV TECHNICAL SPECIFICATION CHANGE Item 1 The surveillance requirements of the Model Technical Specifications for SDV drain and vent valves are:
4.1.3.1.1 - The scram discharge volume drain and vent valves shall be demon-strated OPERABLE at least once per 31 days by:
a.
Verifying each valve to be open*, and b.
Cycling each valve at least one completc cycle of full travel.
Carolina Power & Light Company's response to the above surveillance require-ments for SDV drain and vent valves is given in the subsequent paragraph:
4.1.3.1.1 - The scram discharge volume drain and vent valves shall be verified open at least once per 31 days.*
- These valves may be closed intermittently for testing under administrative control.
Concern Carolina Power & Light Company's response in paragraph 4.1.3.1.1 should also contain the requirement of the Model Technical Specifications paragraph 4.1.3.1.1.b to cycle each valve at least one complete cycle of full travel at least once per 31 days.
Response
Carolina Power & Light Company's submittal for surveillance requirement 4.1.3.1.1 was identical to that requested in Mr. Eisenhut's July 7, 1980 letter, which did not contain the complete cycle requirement; however, enclosed is a revised page which contains the requested surveillance requirements.
Itan 2 The surveillance requirements of the Model Technical Specifications for the scram discharge volume water level-high from Table 4.3.1.1-1 are:
Channel Operational Functional Channel Functional Channel Conditions in Which Unit Check Test Calibration Surveillance Required 8.
Scram Discharge Volume Water Level-High N/A M
R 1, 2, 5 Carolina Power & Light Company's response for submittal to the above surveillance requirement was:
Channel Operational Functional Channel Functional Channel Conditions in Which Unit Ch2ck Test Calibration Surveillance Required 8.
Scram Discharge Volume Water Level-Higt N/A Q
R 1, 2, 5 Concern Referring to paragraph 4.3.1.1 and Table 4.3.1.1-1 of the Model Technical Specifications, the Technical Specifications for Brunswick Steam Electric Plant Units 1 and 2 should contain a similar paragraph and table or an equivalent paragraph stating that each reactor protection system scram discharge volume water level-high instrumentation channel shall be demonstrated OPERABLE by the performance of the CHANNEL FUNCTIONAL TEST once per month and CHANNEL CALIBRATION operations each refueling outage for the OPERATIONAL CONDITIONS 1, 2, and 5.
Response
The Brunswick Steam Electric Plant Unit Nos. 1 and 2 have been operating under Standard Technical Specifications since November, 1977, which were issued with a channel functional test periodicity of quarterly. A review of past surveillance testing for this surveillance requirement does nct indicate a need to increase the periodicity to monthly.
Besides being performed on a quarterly frequency, the channel functional test is alse performed following each scram prior to the subsequent reactor startup. Due to the proven reliability exhibited, with quarterly channel functional tests and additional testing performed following scrams, it is not felt that increasing the channel functional test sur-veillance interval to a monthly frequency is required.
u, Item 3 The trip setpoint requirement of Model Technical Specifications Table 3.3.6-2, Item 5 is as'follows:
Trip Function Trip Setpoint Allowable Value 5.
a.
Water Level-High
$18 gallons
$18 gallons b.
Scram Trip Bypassed N/A' N/A Carolina Power & Light Company's response for-submittal to the above setpoint was:
5.
Water Level-High 573 gallons 5.18 gallons
.b.
Scram Trip Bypassed N/A N/A Concern Referring to paragraph 3.3.6 and Table 3.3.6-2 of the Model Technical Specifi-cations, the trip setpoint for control block limit switch SDV water level-high i:s specified to be a small~ volume.
The Technical Specifications for Brunswick Steam Electric Plant Units 1 and 2 specify the trip _ setpoint of 573 gallons.
Response
The trip setpoint for the control rod block limit switch for-high water level in the SDV is specified in GE Specification 22A2271AJ, revision 2, as the level half way between the " volume not drained" alarm level switch and the'" water level.high" scram level switch.
This volume also_ includes the' volume contained in the drain line.from the instrument volume to the drain valve, which at the Brunswick units is located some distance away from the instrument volume. Due to the size of our instrument volume and the length of pipe.from the instrument volume to the drain _value, our setpoint has'been established as jJ3 gallons. To ensure reliability, the SDV' is connected to the instrument volume by a 12-inch connecting pipe to assure that any water present will accumulate in the instru-ment volume prior to the SDV.
,