ML19320B494
| ML19320B494 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 07/08/1980 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-80-10, NUDOCS 8007140350 | |
| Download: ML19320B494 (3) | |
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4 -.*,.. coo. m m e w July 8, 1980 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commiscion 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICEISE DPR PALISADES PLANT -
RESPONSE TO IE BULLETIN 80 CCHTN4INATION OF HONRADI0 ACTIVE SYSTH4 AND RESULTING POTENTIAL FOR UIC40NITORED, UNCONTROLLED RELEASE OF RADI0 ACTIVITY OF CIVIROIC4EIT IE Bulletin 80-10, dated May 6,1980, requested specific action to be taken to identify potentially un=onitored, uncontrolled release of radioactivity to the environment.
Our response to these items is as follows:
Item 1 Reviev your facility design and operation to identify systems that are considered as nonradioactive (or described as nonradioactive in the FSAR), but could possibly become radioactive through interfaces with radioactive systems, ie, a nonradio-active system that could become contaminated due to leakage, valving errors or other operating conditions in radioactive systems. In particular, special con-sideration should be given to the following systems: Auxilic.ry boiler system, demineralized water system, isolation condenser system, P'4R secondary water clean-up system, instrument air system, and the sanitary vaste system.
Resuonse to Item 1 The demineralized water system is separated from the condensate and primary makeup systems. The condensate storage tank (T-2) is isolated from desineralized water supply by locking closed valves 171 CDS and 177 CDS and feeding the condensate system (other than aux feed and hot vell) with the desineralized water storage tank T-81 through 105-FMV (P&ID M-22).
The pri=ary =akeup system (T-90) has been isolated from the demineralised water system by removing a spool piece from the tie line (M652, G-7).
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2 The domestic vatar supply is fel from four local vells and does not have any connections with c:har plan; systems.
The service air c',ste hac rany functions associated with radioactive syste=s.
Service air system connections are controlled by =anual valves and valving errors vould have to occur simultaneously with loss of air to contaminate the air system.
'~.;3.;11 : h: ting to
- --- =- S'c been contaminated when "3" radioactive evaporator back-fed the M-61 heating boiler due to a failure in the steam bundle. The boiler was u ~ a' s isolated from the co==on steam header which supplies domestic heating Joad. Condensate returns and boiler blowdown vere and re=ain routed to the hea,ing boiler su=p (M-655) which feeds the tur-bine sump (M-652). The turbine su=p is a =onitored and sampled release path.
The condensate returns from the re=aining portions cf the boiler system nor= ally are routed to the condensate system which has lov level contamination due to small pri=ary to secondary steam generator leakage.
The Feedvater Purity System is contaminated from primary to secondary steam generator leakage. All potentially contaminated systems drain to the dirty vaste sump (M-914) which is monitored and fed to the turbine sump (M-652, E-3) or the aux building sump, depending on activity. The heating boiler drains in th feedvater purity building to the oil vaste sump which feeds the turbine sump (M-652, D-3).
The condensate system is also contaminated by primary to secondary leakage. The system has feed isolated as described in Paragraph 1.
Drains go to the turbine sump.
Item 2 Establish a routine sa=pling/ analysis or monitoring program for these systems in order to promptly identify any contaminating events which could lead to unmonitored, uncontrolled liquid or gaseous releases to the environment, including releases to on-site leaching fields or retention ponds.
Restonse to Item 2 Sampling / Analysis 1.
Lake water inlet and discharge are composite sampled daily and analyzed by gross beta activity (H.P.3 7).
2.- Service water and the cooling towers are grab s,;mpled daily and analyzed for gross beta on a weekly accumulation (H.P.3 7).
3 A well sample (domestic system feed) is taken and analyzed monthly by the environmental contractor.
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The steam generator's water is sampled and analyzed daily by ga=ma analysis (Form F.6.3.1).
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The condensate storage tank (T-2), and the heating boilers (M-8) (M-61) and (FWP) are analysed by ga==a spectroscopy and additionally a tritium analysis is performed weekly (Form F.6.3.2).
6.
The turbine sump and dirty vaste sump are composite sampled and full radvaste batch analysis is performed on a monthly co=posite (H.P.6.28).
Additional Sampling / Analysis To Be Added 1.
The air receiver tanks (service air) T8A, TSB and T8C vill te sampled and gamma analysis perfor=ed weekly. This vill be implemented by 10/1/80 due to potential complications in ability to obtain a sample.
2.
The demineralized storage tanks T-81 and T-939 vill have weekly gama analysis performed by 8/1/80.
3.
The domestic water tank T-7 vill have a gamma analysis perfor=ed weekly by 8/1/80.
Reseense to Items 3 and h Items 3 and 4 on IE 80-10 need to be addressed for the potential release from a heating boiler failure such as described in this bulletin. Releases from all systems are being evaluated against h0 CFR 190 limits. A detailed analysis is presently being conducted and vill be ccepleted by 7/31/80.
David P Hoffman (Signed)
David P Hoffman Nuclear Licensing Administrator CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector-Palisades
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