ML18096A881

LER 92-004-01:on 920128,observed That R46 Rms MSL Radiation Monitor Detector Not One Ref by Calibr Procedure During Channel Calibr.Caused by Personnel error.R46 Channels Having Tec M701 Detector replaced.W/920723 Ltr

ML18096A881
Person / Time
Site:	Salem
Issue date:	07/23/1992
From:	Pollack M, Vondra C Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-92-004, LER-92-4, NUDOCS 9208140127
Download: ML18096A881 (6)

Text

(4.*PS~G Public Service Electric and Gas Company" P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station July 23, 1992 U. s. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Dear sir:

SALEM GENERATING STATION LICENSE NO. DPR-70 DOCKET NO. 50-272 UNIT NO. 1 SUPPLEMENTAL LICENSEE EVENT REPORT 92-004-01 This.Supplemental Licensee Event Report is being submitted pursuant to Code of Federal Regulations 10CFRS0.73. The report has been modified based upon completed event causal factor investigation.

Si~rely yours, .

&!IP~

General Manager -

Salem Operations MJP:pc Distribution

-The En.::: cy P8orJiE:: -

. 9208140127 920723 PDR ADOCK 05000272 95-2189 (10M) .12-89

~ PDR

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (6-891 APPROVED OMB NO. 3150-0104

- EXPIRES: 4/30/92 -

ESTIMATED BUROEN PER RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 50.0 HRS. FORWARD LICENSEE EVENT REPORT (LER) COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENT BRANCH (P-5301, U.S. NUCLEAR

.* REGULATORY COMMISSION, WASHINGTON, DC 20555, AND TO THE PAPERWORK REDUCTION PROJECT (3150-01041, OFFICE OF* MANAGEMENT AND BUDGET, WASHINGTON, DC 20503.

FACILITY NAME 111 DOCKET NUMBER_ (21 I PAGE 131 Salem Generating Station - Unit 1 TITLE 141 Io 15 Io Io Io 12 I 712 1 loF 0 15 Incorrect detectors installed in several main steamline radiation monitors.

EVENT DATE (51 LER NUMBER 161 REPORT DATE 171 OTHER FACILITIES INVOLVED (81 MONTH DAY YEAR YEAR t=t SE~~~~~~AL }) ~~~~~ MONTH . DAY YEAR FACI LITV NAMES DOCKET NUMBERISI Salem Unit 2 o 1s1010 1 0 1 3 1 :; 1 9 2. ~ 2 - ol o14 - oI1 ala OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE fl!,.QUIREMENTS OF 10 CFR §: (Check one or more of th-. following/ (111 1

MODE (91 I

t------,.---....L.~----l 20.402(bl 20.405(cl 50.73(*1l21livl 73.71lbl 20.406(*111 ){I) 60.38(cll11

- 50.73loll21M 73.71(cl POWER tr,....,~L!"'~~o~.,.,L~""l"'-o:l:ol"""'Q~IQ ----I 4 20.405(01(11011

-.X 50.38(cll21 60.73(ol(2){i) 50.73(o){21(viil 50.73loll21Cvii1HAI

- OTHER (Specify in Abstrect

/Mlow ond in Text, 'NRC Form 366A/

11111111= :::::::::: -

60.73(o)(2){iil 60.73(*1!211iiil LICENSEE CONTACT FOR THIS LER (121 50.73(oll21lvlii){BI 50.13(*11211*1 NAME TELEPHONE NUMBER AREA CODE M.J. Pollack - LER Coordinabbr COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (131 MANUFAC- MANUFAC-CAUSE SYSTEM COMPONENT COMPONENT TURER TURER I I I I I I I I I I I I I I .1 I I I I I I I I I I I SUPPLEMENTAL REPORT EXPECTED (141 EXPECTED

~

SUBMISSION 11 YES lif Y9S. complete EXPECTED SUBMISSION DATE/ NO DATE (151 I I I ABSTRACT (Limit to 1400 1pact1s, i.e.* epproximsttJ/y fiftt1en single-space typewritten lines} (16)

. On 1/28/92, a technician observed {during performance of channel calibration) that an R46 Radiation Monitoring System {RMS)- Main Steam Line Radiation Monitor detector was not the one referenced by the calibration procedure. Further investigation revealed several R46 RMS channels with incorrect detectors including the Unit 1 1R46A,. C and D channels and the Unit 2 2R46 A, B, c, and E channels._ A "TEC M703" detector, with a range of 0-.1-mR/hr - 10 R/hr, is required. TEC M701 were ins_talled {not "Class lE")

• The Updated Final Safety Analysis

---Report (UFSAR) --requires the -channel- to be -Class ,.lE* per -Regulatory Guide 1.97. Subsequently, the subject 1{2)R46.channels were.declared inoperable. The root cause for the installation of the wrong detector{s) is personnel error. The R46 RMS channels were installed per design*

change packages, circa 1983. They were purchased Class 1E. The folio system in 1983 classified the replacement detectors*as Cqmmercial catalog Items. However, the part was incorrectly identified. The TEC M701 detectors were put in the procurement folio system instead of TEC M703 detectors. The channels with TEC M701 detectors have had them replaced with the TEC M703 detectors. The TEC M703 detector has been added to the folio system and the Bill of Materials for each channel. The TEC M701 detector has been removed from the folio system. Maintenance Department management has issued a letter to all department personnel stressing the need to use the Engineering Requisition process when components are not found in the Bill Of Mat*rials.

NRC Form 366 (6-891

LICENSEE EVENT REPORT {LER) TEXT CONTINUATION Salem Generating station DOCKET NUMBER LER NUMBER PAGE Unit 1 5000272 92-004-01 2 of 5.

PLANT AND SYSTEM IDENTIFICATION:

Westinghouse - Pressurized Water Reactor Energy Industry Identification System {EIIS) codes are identified in the text as {xx}

IDENTIFICATION OF OCCURRENCE:

Incorrect detectors installed in several main steamline radiation monitors Discovery Date: 2/03/92 - Based upon completion of event review by the LER Coordinator with Operations management Report Date: 8/23/92 This report was initiated by Incident Report No.92-066.

CONDITIONS PRIOR TO OCCURRENCE:

Unit 1: Mode 1 Reaftor Power 100% - Unit Load 1140 MWe Unit 2: Defueled - 6 h Refueling Outage In Progress DESCRIPTION OF OCCURRENCE:

On January 28, 1992, an Instrumentation & Control (I&C) technician observed (during performance of channel calibration) that the R46 Radiation Monitoring System (RMS) {IL} Main Steam Line Radiation Monitor detector he was replacing was not the one referenced by the calibration procedure or the vendor manual. Further investigation revealed several R46 RMS channels with incorrect detectors including the Unit 1 1R46A, C and D channels and the Unit 2 2R46 A, B, c, and E chann-els.

• The calibration procedure(s), controlled wiring diagrams, and the vendor manual specify that a "TEC M703 11 detector, with a range of O.lmR/hr - lOR/hr, be installed in the R46 RMS channels. Inspection revealed that several installed detectors were the wrong model (i.e.,

TEC M701 vs. TEC M703). The TEC M701 detector has a range of 1.0 mR/hr - 100 R/hr. Further investigation revealed that the TEC M10l detector is not purchased as "Class lE". The Updated Final Safety Analysis Report (UFSAR) requires the channel to be Class lE per Regulatory Guide 1.97.

Since the wrong detector was found in some of the 1(2)R46 channels,-

they were declared inoperable. Salem Unit 1 Technical Specification Table 3.3-6 Action 23 was entered. The comparable Salem Unit 2 Technical Specification was not entered since the channels are required to be operable in Modes 1, 2, 3 and 4 and, at the time of discovery of this event, the Unit was defueled.

- .~ , ., -'-*-- '-* ..* - -* . .

LICENSEE EVENT REPORT (LER)* TEXT CONTINUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE Unit 1 5000272 92-004-01 3 of 5 DESCRIPTION OF OCCURRENCE: (cont'd)

Since issuance of the original LER, all R46 RMS channels {both Units) have been returned to service with model TEC M703 detectors installed.

Technical Specification Table 3.3-6 Action 23 states:

"With the number of OPERABLE Channels less than required by the Minimum Channels OPERABLE requirements, initiate the preplanned alternate method of monitoring the appropriate parameter{s),

within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and: , *

1) either restore the inoperable Channel{s) to OPERABLE status within 7 days of the. event, or *

2) prepare and submit a Special Report to the Commission pursuant to Specification 6. 9 .. 2 within 14 days following the event outlining the action taken, the *cause of the inoperability and the plans and schedule for restoring the system to OPERABLE status."

• APPARENT CAUSE OF OCCURRENCE:

The root cause for the installation of the wrong detector(s) in several of the 1{2)R46 RMS channels is personnel error.

The R46 RMS channels were installed per design change packages lEC-1181 and 2EC.;.1185, circa 1983~ They.were purchased as."Class lE" in accordance with Regulatory Guide 1.97. In 1983, the folio system listed the replacement parts (i.e., detectors) as Commercial Catalog Items (a commercial item which could be used. in.safety related applications). *However, the part was incorrectly specified as a M701 detector instead of a M703 detector. The TEC ~701 detectors were put in the procurement folio system instead of TEC M703 detectors due to inattention to de.tail and inadequate administrative controls.

Materiel classification guidance documentation was limited (by todays standards).

• Between 1983 and 1988, two (2) of the ten {10) R46 channel detectors were replaced.with M701 detectors. In 1988, Procurement Engineering changed the CCI classification of the M701 detector to non safety related. The engineer did not adequateiy research the original.

classification requirements. Between 1988 and 1991, five (5) additional R46 RMS channel detectors were replaced.

• Technicians replacing R46 channel detectors, did not address the fact that R46 channel replacement detectors were different from installed detectors. The M701 detectors are physically .identical to the M703 detectors except for different model numbers and ranges. *Also, the R46 calibration procedures correctly identify the R46 RMS channel detector as a TEC model M703.

LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating_station DOCKET NUMBER LER NUMBER PAGE Unit 1 5000272 92-004-01 4 of 5 ANALYSIS OF OCCURRENCE:

The R46A-D RMS channels monitor main steamline radioactivity (one per main steamline). Their purpose is to identify significant primary to secondary leakage. The Rl9 Steam Generator Blowdown RMS monitors and the R15 RMS Air Ejector Monitor corroborate the 1R46 monitors' indications. The R46E channel is downstream of the common discharge header* of the other R46 RMS monitors.

The 1Rl9 Steam Generator Blowdown Process RMS channels and the 1R15 Condenser Air Ejector RMS channel were operable during the time the 1R46A, c and D channels were declared inoperable (due to the recognized installation of the incorrect detector). No increase in activity was noted by these channels during the subject period. Had an increase of activity in these channels been noted, additional monitoring of the main steamlines would have been conducted by Radiation Protection.

• The R46 channels provide alarm indication at 10 mR/hr. They do not provide any interlocking functions. The channels have successfully passed prior surveillance testing even though non Class lE detectors (M701s) were installed. The two detectors detection ranges overlap sufficiently to meet R46 channel functional requirements. During the period of 11 inoperability 11 , the channels were not called upon to function. Therefore, the health or safety of the public was_not affected by this event.

In accordance with Code of Federal Regulations 10CFR 50.73(a) (2) (i) (B), the circumstances surrounding this event are reportable to the Nuclear Regulatory Commission. With non Class lE detectors installed instead of Class lE ones, the channels are not considered operable. Therefore, Technical Specification Table 3.3~6 Action 23 was not met since, "the preplanned alternate method of monitoring the appropriate parameter(s)" was not performed during the period with the non safety related detectors installed.

EQUIPMENT INFORMATION:

R46 RMS Channel Detectors:

Supplier - Technology For Energy Corp. (TEC)

Manufacturer - Nuclear Research Corp. (NRC)

Manufacturer Model # Supplier Model #

TA-67AE M701 TA-62AE M703 CORRECTIVE ACTION:

Maintenance Department management has issued a letter to all department personnel. The letter stressed the need to use the Engineering Requisition (E-Req) process when components are not found

.~ICENSEE EVENT REPORT (LER). TEXT CON~INUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE Unit 1 5000272 92-004-01 5 of 5 CORRECTIVE ACTION:* Ccont' dl in the Bill Of Materials (BOM). TheE-Req process was initiated in 1988. This process was not used by the technicians to address the difference between the TEC M701 and TEC.M703 detectors. In addition, a workshop review is being conducted, with applicable maintenance department personnel; of the BOM and E-Req processe.s.

Engineering & Plant Betterment Department management has issued a letter (STN-92-0147) to all Nuclear Engineering Design Personnel.

The letter identified lessons learned from this event (including the need to maintain attention to detail) and .the need to comply with

.administrative procedures used in _component classification.

• Since 1988, procedure revisions relating to materiel procurement and classification guidelines have clarified guidance to personnel.

Also, the availability.of computerized data bases (e.g., Managed Maintenance Information System and the BOM) and the requirement of parts being evaluated for use against a specific parent component identifier (not just a name or description) minimize the potential of a future misclassification.

The R46 channels having.the TEC M701 detector were declared inoperable upon discovery. The detectors have since been replaced with the TEC M703 model detectors. Upon successful calibration and functional testing, they were returned to service.

The TEC M701 detector has been removed from the folio system.

The R46 RMS channel replacement detectors (i.e., TEC M703 or equivalent) have been placed into the folio system and have been added to the BOM for each R46 RMS channel.*

.{A a_

• General Manager -

Salem Operations MJP:pc SORC Mtg.92-086