ML17277B169
| ML17277B169 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 12/08/1983 |
| From: | Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| GO2-83-1128, NUDOCS 8312190043 | |
| Download: ML17277B169 (7) | |
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ACCESSION NBR08312190043 DOCBDATE! 83/12/08 NOTARIZED:
NO DOCKET' FACIL:50 397 WPPSS Nuclear Pr ojectr. Unit 2r Wash'ington "Public Powe 05000397 AUTH NAME AUTHOR AFFILIATION SORENSENEGBC, WaShingtOn Publi,C POWer Supply SyStem RECIPBNAME RECIPIENT AFFILIATION SCHWENCERiA, Licensing Branch 2
SUBJECT:
Provides step by step defini:tion of how util will apply Section 5.4 of ANSI 13 '0r"Std of Performances" to 'five listed effluent minitorsrper 831202 request, DISTRIBUTION CODE:
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-TITLE: Licensing Submittal:
PSAR/FSAR Amdts L Related Correspondence' NOTES:
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.NRR/DHFS/HFEB40 NRR/DHFS/PSRB NRR/OS I /AE8 26 NRR/DSI/CP8 10 NRR/OS I/ICSB 16 NRR/DS I/PSB 19 NRA/OS I/RSB 23 RGH5 EXT1ERNAL; ACRS 41 DMB/DSS (AMDTS)
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Washington Public Power Supply System P.O. Box 968 3000 George Washington Way Richland, Washington 99352 (509) 372-5000 December 8, 1983 G02-83-1128 Docket No. 50-397 Director of Nuclear Reactor Regulation Attention:
Mr. A. Schwencev, Chief Licensing Branch No.
2 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555 83l2l90043 831208 PDR ADOCN 05000397 A
Dear Mr. Schwencer:
Subject:
NUCLEAR PROJECT NO.
2 DEFINITION OF APPLICABLE ANSI 13.10 CRITERIA As requested during a telephone conversation on December 2, 1983, between Messrs.
A. Toth, G. Yuhas, R. Auluck, C. Miller (NRC) and R. Graybeal, P.
- Powell, V. Shockley, and D. Kassakatis (SS), the Supply System has reviewed ANSI 13.10 and is defining, in this letter, Sections of ANSI 13.10 that will be applied to our five effluent monitors.
The five monitors identified as effluent monitors are:
REA-RE Reactor Building Ventilation Exhaust
- System, TEA-RE Turbine Building Ventilation Exhaust System, WEA-RE-14
- Radwaste Building Ventilation Exhaust System, FDR-RE Radwaste Effluent (Liquid) and TSW-RE Plant Service Water.
Included as effluent monitors are REA-RE-19A, TEA-RE-13A and WEA-RE-14A, the mid-range gaseous effluent monitor.
The REA LOCA moni tors are excluded from this effluent standard.
As ANSI 13. 10 states in Section 2 "Scope", this is a standard to be used for selection of monitoring instruments, this standard was not required to be used for selection of monitoring instrumentation at WNP-2.
As the Supply System is not committed to this standard in the WNP-2 FSAR, only the Section 5.4 "Standards of Performance" will be addressed.
The following is a step by step definition of how WNP-'
will apply Section 5.4 of ANSI 13.10.
5.4Property "ANSI code" (as page type) with input value "ANSI 13.10.</br></br>5.4" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process..1 Detectors weve selected for WNP-2 with the capability to detect mixtures of radionuclides most commonly found in the liquid and gaseous effluents s treams.
5.4.1.1 and 5.4.1.2 The itiinimum level of detectability (MDL) for gaseous streams of WNP-2 as monitors are now installed will range between 1 to 3 x 10 yCi/mg,.
The MDL for6liquid streams as monitors are now installed is 1 to 4 x 10 yCi/ma.
These minimum detection levels will be verified during calibration and are dependent on background levels.
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A. Schwencer Page Two December 8, 1983 DEFINITION OF APPLICABLE ANSI 13.10 CRITERIA 5.4.2 The WNP-2 instrumentation dynamic range is at least 10 times MDL 4
with instrument readouts in counts per minute (CPM).
The CPM can be converted to pCi/ma. for selected isotopes by using the calibration curves.
5.4.3 5.4.4 5.4.5 5.4.6 5.4.7 5.4.8 5.4.9 The Supply System presently does not consider it difficult to meet these sensitivity requirements.
- However, more time is required to determine the sensitivity of the WNP-2 instruments.
This will be evaluated during the enhanced calibration program and by 7/1/84.
The instrument error of +20Ã will not be exceeded for the range of calibration determined by our procedures.
Solid sources are used for higher range effluent monitor calibrations.
In determining the error at WNP-2, Rr is defined as the readout meter or recorder and Rt is the sealer or current output.
For upper ranges of the log rate meter, the error may be greater than +205.
- However, this is not the level planned as being our normal operating range readings.
WNP-2 meets or exceeds the
+10Ã precision for our solid transfer sources.
The Supply System will evaluate the response times during the enhanced calibration program when the RC time constants are fully determined.
This is to be completed by 7/1/84.
The Physical, Mechanical, and Electrical requirements do not pertain to the WNP-2 instrumentation.
However, in reviewing the application of the WNP-2 instruments we have concluded that our instruments will perform their perscribed functions.
The WNP-2 control room radiation monitoring instrumentation racks are not designed to this standard and are not equipped with external alarm adjustments.
However, capabilities are provided to set alarm setpoints to meet our.Technical Specification criteria.
The Supply System will evaluate the WNP-2 circuits for meter pegging devices.
A. Schwencer Page Three DEFINITION OF APPLICABLE ANSI 13.10 CRITERIA'.4.10 a)
The WNP-2 secondary or transfer source are of sufficient size to assure geometry repeatabilities.
b)
The DOP determination of, line loss of particulates will be omitted by exception.
c)
Remote operated check sources are provided in most systems but not all.
The systemwithout remote check sources are configured to allow periodic checks with a known strength external source.
d)
The Supply System takes exception to the use of the calibrated electrical signal; however, this will be taken into consideration during the enhanced calibration program to be completed by 7/1/84.
Should you have any further questions, please contact Mr,. P. L. Powell, Manager, WNP-2 Licensing.
Yery= truly yours, G.
C. Sorensen, Manager Regulatory Programs YES/tmh cc:
R Auluck -
NRC WS Chin
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