IR 05000309/1990022
| ML18009B027 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 11/27/1990 |
| From: | Joyner J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Frizzle C Maine Yankee |
| Shared Package | |
| ML18009B028 | List: |
| References | |
| NUDOCS 9012060020 | |
| Download: ML18009B027 (5) | |
Text
Carolina Power & Light Company P. O. Box t65 ~ New Hill,N. C. 27562 OCT 1 5 t990 R. B. RICHEY Vice President Harris Nuclear Project Letter Number:
HO-900153 (0)
U.S. Nuclear Regulatory Commission ATTN:
NRC Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 DOCKET NO. 50-400 LICENSE NO. NPF-63 LICENSEE EVENT REPORT 90-020-00 Gentlemen.'n accordance with Title 10 to the Code of Federal Regulations, the enclosed Licensee Event Report is submitted.
This report fulfills the requirement for a written report within thirty (30)
days of a reportable occurrence and is in accordance with the format set forth in NUREG-1022, September 1983.
Very truly yours, X'>~i,,/.(
R.
B. Richey Vice President Harris Nuclear Project RAP:msb Enclosure cc:
Mr. R. A. Becker (NRR)
Mr. S.
D. Ebneter (NRC RII)
Mr. J.
E..Tedrow (NRC SHNPP)
'rr01 0260020 9010> b PDR ADDCK 05000400 S
PNU
'j.;M,rLER-90-020/1/OS1
NRC FORM 366 (Ssm S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT (LER)
DYED OMB NO.31504)104 EXPIRES) 4130192 ESTIMATED BURDEN PFR RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 50.0 HRS, FORWARD COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENTBRANCH (Pe)30), U.S. NUCLEAR REGULATORY COMMISSION. WASHINGTON. DC 20555, ANDTO THE PAPERWORK REDUCTION PROJECT (31500104). OFFICE OF MANAGtMENTANO BUDGET,WASHINGTON,DC 20503.
FACILITYNAME III SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 TECHNICAL SPECIFICATION VIOLATION DUE TO HISSED RADWASTE SAMPLING REQUIREMENTS PA E
DOCKE'7 NUMBER (2)
5
0 0140 0>OP04 EVENT DATE ISI MONTH OAY YEAR YEAR LER NUMBER (6)
SEQUENTIAL NUMBER rt4vtcIoN NUMSEII MONTH OAY YEAR REPORT DATE (7)
DOCKET NUMBER(SI
5
0
FACILITYNAMES N/A OTHER FACILITIES INVOLVEDISI
9 390
0 2 0 0 0
0
5 9 0
5
0
OPERATINQ MODE (SI
POWER LEYEL
0
gi.or'r$A+Pcccv c~p+.:~k 20A02(S)
20A05( ~ )(1((il 20A05(rill)(Nl 20.406(el(i)(i(il 20.406(e) III(ir)
20.406(el(1 l(vl 20A05(c)
50.36 (clIII 50.36(cl(2(
60.73( ~l(2)(i)
50.73( ~ l(2)(Nl 50.73(e) (2)uii)
LICENSEE CONTACT FOR THIS LER (12I 50.73(e)(2 IIiv)
50.73(el(2)(v)
50.73(e) (21(riil 60.73(e I(2)(viiil(AI 50.73(e) (2) IriNI(B)
50,73( ~I(2((e)
THIS REPORT IS SUBMITTFD PURSUANT 70 THE RtQUIREMENTS OF 10 CFR (I: IChrch onr or more Of the foiiowenpi (11 73.7( IS)
73.71(cl OTHER ISp>>city in Ahtttrct OeiOWenpin Teer. HRC PrNm JSSAI NAME Raymond Patterson Regulatory Compliance Technician AREA CODE TELEPHONE NUMBER 919 362 -2
5 COMPLETE ONE LINE FOR tACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13)
CAUSE SYSTEM COMPONENT MANUFAC TURER REPORTABLE TO NPRDS
..': '
Nr i reYS"'e
'P~X~~NK @
CAUSE SYSTEM COMPONENT MANUFAC.
TURER EPORTAB LE TO NPROS lr:
XXN,.
B I L F
S G
5 0 W%!~%4 SUPPLEMENTAL REPORT EXPECTED (14)
YES Iifyet, compirtr EXPECTED S(IShtfSSIOH DATEI NO ABSTRACT ILimit to Ie(X) tprcrL Er., rpprorimmeiy fifteen tlnplr tprce typewritten finrtf (16)
MONTH OAY EXPECTED SUBMISSION DATE (15I YEAR On September 12, 1990, the plant was ooe o>> ng in Mode I, at IOOS Reactor Power.
The Secondary Waste Sample Tank (SWST)
was in the continuous release mode of operation.
The SWST Radiation Mon((or (REM-21WS-3542)
was in normal continuous operation as requirea by Technical Specification (TS) 3.3.3.10 table 3.3-12 item I.a.3 ~
An Instrumentation (I, Controls (I(IC) Technician (Tech)
working in the area observed that the SWST Radiation Monitor was indicating flow through the sample system but the sample pump was swirched To the off positions Tf)ere was a deficiency tag on the monitor for loss of sample flow nnd the I(IC Tech ossumea that the monitor had Deen declared inoperable.
On September 13, 1990, the IKC Tech discussed what he had observed with a Radiate<<r viot Tor ng System (RMS)
Technician (Tech) ~
Investigating the situation, the RMS Tech found the sample pump turnea off but the sample flow instrumentation was reading
gpm which prevented any loss of flow trouble alarms from annunciating, He contacted the Main Control Room ana monitor REM-21WS-3542 was declared inoperable at 08."'EO.
September 5,
1990, was the last known time the pump was starred and herefore, It is concluded that the mor on was malfunctioning from September 5,
1990, to September 13, 1990.
Compensatory actions as required b>
TS table 3.3-12 were initiated.
lt WaS determined that reSIn in the naaiatIOn mOnitOr Sample lineS CauSed the f IOW SWISCh tO StiCk Open.
The neSin WaS being Carried OVe" tO Tne SeCOndary WaSte SyStem during COndenSate POliSher I )eneratian and getting intO the Sample IlneS frOm lne SeCOnaar; HaSte Sample Tank.
eVieW Of the analySeS perfOrmed On SOmpleS taken befOre and after thiS periOd ShOW in.vrl,Vity preSent in the SWS(
continuous release.
Ada itionolly, there is no, primary
,o secondary leakage existing in the Steam generators.
Therefore, no significan~ safety consequences have occurred as a result o(
+N v event.
- orrective actions for this evenr include installation of resin traps/screens to Condensate Polisher
"em(nerolizers, desludging the High ond (.ow Conauclivity Holding Taiks and the SWS'.
End flushing the SWST Raalation Monitor sample lines.
~
. Uvent is being reported in occardarce vttti 'Or('(%50v13 (a)
(2) (i) (B) as a TS v NRC form 366 (649)
NRC FORM 35BA (BB9)
U.S. NUCLEAR REGULATORYCOMMISSION LICENSEE EVENT RE RT ILER)
TEXT CONTINUATION PPROVEO OMB NO. 31500)Be EXPIRES: A/30I92 ESTIMATED 45%DEN PER RESPONSE TO COMP(.Y WTH THIS INFORMATION COLLECTION REOUESTI 50A) HRS. FORWARD COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENTBRANCH IPB30), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON, OC 20555, AND TO 1'HE PAPERWORK REDUCTION PROJECT (3(50010(). OFFICE OF MANAGEMENTAND BUDGET, WASHINGTON,DC 20503.
FACII.ITYNAME (1I DOCKET NUMBER 121 LER NUMBER (5)
PAGE (3)
SHEARON HARRIS NUCLEAR POWER PLANT UNIT
TEXT Pl more g>>ce Jr e))rrired, rrJe eddrdonel PVRC Form 35SABI ()3)
o s
o o
o 4 0
YEAR 9 0 SSOVSNZIAL NVMSER
2 0 REVISION NUM erI
0 0 2 oF0
EVENT DESCRIPTION On September 12, 1990, the plant was operating at full powe The Secondary Waste Sample Tank (SWST)
was in continuous release operation with the SWST Radiation Monitor assumed to be operable.
None of the four (4)
remote monitoring locations were experiencing low sample flow annunciator alarms for SWST Radiation Monitor (REM-21WS-3542).
An I&C Tech was working on the Waste Monitor Tank Radiation Monitor (REM-21WL-3541).
He heard a noise coming from the vicinity of the SWST Radiation Monitor.
He found REM-21WS-3542 was indicating sample flow but the sample pump was not operating.
There was a
loss of sample flow deficiency tag on the monitor 'and he assumed the monitor was already inoperable.
On September 13, 1990, th'e I&C Tech contacted the Radiation Monitoring System (RMS) Tech to request the work ticket number to repair REM-21WS-3542.
The RMS Tech told the I&C Tech that there were no open work tickets for REM-21WS-3542 and the monitor was operable with sample flow indication present.
After receiving the I&C Tech's observation from the day before, the RMS Tech went down to the monitor to investigate.
He found the monitor sample pump switch was in the off position and the sample flow switch reading
gpm (alarm setpoint
<
1 gpm).
He contacted the Main Control Room and recommended that REM-21WS-3542 be declared inoperable.
At 08:30 on September 13, 1990 the monitor was declared inoperable and Equipment Inoperable Record (EIR) f OP"90-7699 was written.
At the time of discovery there was no release being made from the SWST.
Compensatory sampling actions required by TS table 3.3-12 were initiated.
The last confirmed date the monitor was known to be functioning properly was on September 5,
1990.
On this date, the monitor went into a loss of sample flow alarm and was restarted at the monitor by a RMS Tech.
Since it cannot be verified that the monitor was operating properly thereafter, it must be concluded that it was malfunctioning during the period between September 5 and September 13, 1990.
CAUSE:
The major cause of this ev'ent was the presence of resin in the radiation monitor sample line which resulted in the flow switch (Manufacturer GEM SENSORS DIV/DELAVAL INC, Model 7/
FS-10798)
sticking on an artificial setting.
Resin is being carried over to the Secondary Waste System during Condensate Polisher regeneration.
This resin is reaching the SWST and is being drawn into the sample lines for REM-21WS-3542.
NRC Form 35BA (BB9)
NRC FORM 366A (669)
U.S. NUCLEAR REGULATORYCOMMISSION LICENSEE EVENT R RT {LER)
TEXT CONTINUATION PPR DYED OM6 NO. 31504106 EXPIRES: C/30I92 ESTIMATED Z7RDEN PER RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 500 HRS. FORWARD COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENTBRANCH (P.530). U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON. OC 20555. ANO TO THE PAPERWORK REDUCTION PRO)ECT (3)504106), OFFICE OF MANAGEMENTAND BUDGET, WASHINGTON.DC 20503.
FACILITYNAME (ll SHEARON HARRIS NUCLEAR PLANT UNIT
TEXTNeo Aooco lo mquwed, ooo afro'ooo) IVRC Form 36M3 I (12)
DOCKET NUMBER l2)
VCAR o
o o
o 40 090 I.ER NUMBER IS)
SEQUENTIAL NVMOCR
2 0
- P)Tg RCY4ION NVMCCR 0 0 PAGE (3)
OF 04 CAUSE (continued)
It could not be determined who placed the pump 'switch in the off position.
RMS personnel that were on site during the period between September
"13, 1990, were interviewed to determine why and when the pump was turned off.
No one remembers turning the pump to the off position.
However, had the flow switch been functioning properly, as on September 5,
1990, plant personnel would have been alerted to the loss of sample flow via alarms at the Radiation Monitor (RM)-ll computers located i.n the Main and Radwaste Control Rooms, the Radiation Control Office and the Main Control Room computer room.
Certain factors contributed to the amount of time (September
13, 1990)
that this abnormal flow condition went unnoticed.
There was a deficiency tag (90-ALJFl) for "loss of sample flow" on the monitor that had not been removed following completion of work for a prior problem on August 22, 1990.
This tag, in conjunction with the pump switch being in the OFF position, would lead someone looking at the monitor to assume that the monitor was inoperable.
On the other hand, because the flow switch was stuck, the local flow gauge was, indicating flow and the operate light on the monitor was lit (indicating no abnormal condition) which would lead people to think the monitor was operating properly.
However, these conflicting indicators should have been noticed by the RMS Techs during their daily monitor walkdowns and prompted further investigation.
SAFETY SIGNIFICANCE:
There were no adverse safety consequences as a result of this event.
It must be assumed that the SWST Continuous Release was not monitored per TS 3.3.3-10 from September
to 13, 1990 'here is a
composite sample collected and analyzed on a weekly basis when continuous releases are made vi( the SWST.
A review of analyses performed on these samples for the first three (3) weeks of September indicate that no activity was present'n the SWST effluent during this time period.
Therefore it can be concluded there were no significant safety consequences as a result of this event.
There have been other previous Licensee Event Reports (LER) that pertain to the failure to meet TS sampling requirements.
These include LER 86-010, LER 87-015, LER 87-016, LER 88-015.,
LER 88-027, and LER 89-009.
The current event is the only one that resulted from resin fouling a radiation monitor flow switch.
This event is reported in accordance with 10CFR50.73 (a) (2) (i) (B) as a
TS violation.
NRC FomI 366A (569)
NRC FORM SSSA (589)
U.S. NUCLEAR REGULATORYCOMMISSION LICENSEE EVENT RE RT ILER)
TEXT CONTINUATION PROVED 0M B NO. 31500)0O EXPIRES: O/30/92 ESTIMATED BIP5EN PER RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: SO/) HRS. FORWARD COMMENTS REGARDING BURDEN ESTIMATETO THE RECORDS AND REPORTS MANAGEMENTBRANCH (P.530), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON. OC 20555, AND TO 1HE PAPERWORK REDUCTION PROJECT (3)500)(M), OFFICE OF MANAGEMENTAND BUDGET, WASHINGTON,DC 20503.
FACILITYNAME (Il SHEARON HARRIS NUCLEAR PLANT UNIT 1 TEXT ///moro Nroco /J /Jr/rorL rrw or//I/orro/H/IC/rorm SSSAS/(17)
DOCKET NUMBER l2)
YE A II o
s o
o o
0
0 LER NUMBER (5)
c))O) SEQUENTIAL
+?>:
NUM Ell
2 0 REVISION ll'.1 rrUM 5 a
0 PAGE (3)
op
4 CORRECTIVE ACTIONS:
Complete implementation of PCR-1339.
This modification adds resin traps/screens to the Condensate Polisher Demineralizers.
Successful completion of this modification will preclude resin from entering the Secondary Waste System.
2.
Desludge the Low and High Conductivity Holding Tanks and the SWST.
3.
Flush the sample lines for the SWST Radiation Monitor.
4.
Continue to do the compensatory sampling required by TS table 3.3-12 (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> samples depending on activity level) regardless of the operability status of REM-21WS-3542 until the completion of PCR-1339.
5.
Review this event with all Radiation Control RMS personnel to stress the importance of knowing the current status of each TS monitor and verify their condition during routing TS monitor walkdowns.
6.
A routine quarterly audit of deficiency tags is under way.
Appropriate retraining of personnel.
will be done if the audit indicates this is required.
EIIS CODE INFORMATION:
Radiation Monitoring System IL Condensate and Feedwater Chemistry Control System KD NRC Form 35SA (SJ)9)