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{{Adams | |||
| number = ML20203F681 | |||
| issue date = 07/23/1986 | |||
| title = Insp Rept 50-298/86-21 on 860601-30.Violation Noted:Failure to Have Procedure for Controlling Activities Affecting Quality | |||
| author name = Dubois D, Jaudon J, Plettner E | |||
| author affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) | |||
| addressee name = | |||
| addressee affiliation = | |||
| docket = 05000298 | |||
| license number = | |||
| contact person = | |||
| document report number = 50-298-86-21, NUDOCS 8607310161 | |||
| package number = ML20203F659 | |||
| document type = INSPECTION REPORT, NRC-GENERATED, TEXT-INSPECTION & AUDIT & I&E CIRCULARS | |||
| page count = 14 | |||
}} | |||
See also: [[see also::IR 05000298/1986021]] | |||
=Text= | |||
{{#Wiki_filter:. | |||
. e _ -. , | |||
APPENDIX B | |||
U. S. NUCLEAR REGULATORY COMMISSION | |||
REGION IV | |||
NRC Inspection Report: 50-298/86-21 License: DPR-46 | |||
Docket: 50-298 | |||
Licensee: Nebraska Public Power District (NPPD) | |||
P. O. Box 499 | |||
Columbus, NE 68601 | |||
Facility Name: Cooper Nuclear Station (CNS) | |||
Inspection At: Cooper Nuclear Station, Nemaha County, Nebraska | |||
Inspection Conducted: June 1-30, 1986 | |||
Inspectors: . 4. didh , 7 // !((o | |||
E. A. Plettner, Resident Inspector, (RI). Date / | |||
O //f?{> | |||
D. L. DuBois, Senior Resident Inspector, (SRI) Date | |||
Approved: e tuf N | |||
CfiTef, Project Section A,. | |||
7 23 ! | |||
Da t'e | |||
J/Meadtor | |||
P. faudof, | |||
It oject Branch | |||
8607310161 860724 8 | |||
PDR ADOCK 0500 | |||
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Inspection Summary | |||
Inspection conducted June 1-30, 1986 (Report 50-298/86-21) | |||
Areas Inspected: Routine, unannounced inspection of previously identified | |||
inspection findings, Licensee Event Reports, spent fuel shipments, operational | |||
! safety verification, and monthly surveillance and maintenance activities. | |||
Results: Withii. the areas inspected, one violation was identified (failure to | |||
have a procedure for controlling activities affecting quality paragraph 3). | |||
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DETAILS | |||
1. Persons Contacted | |||
*G. R. Horn, Division Manager of Nuclear Operations | |||
*E. M. Mace, Plant Engineering Supervisor | |||
*J. M. Meacham, Technical Manager | |||
*J. Sayer, Acting Technical Staff Manager | |||
*C. R. Goings, Regulatory Compliance Specialist | |||
*V. L. Wolstenholm, Quality Assurance Manager | |||
NRC Personnel | |||
- | |||
*W. M. McNeill, Project. Inspector | |||
*D.' L. DuBois, Senior Resident Inspector | |||
,*E. A. Plettner, Resident Inspector | |||
* Denotes those present during exit interview June 27, 1986. | |||
2. Licensee Action on Previous Inspection Findings | |||
, | |||
(Closed) Open Item (298/8110-01): " Lack of Concise and Grouped Technical | |||
Specifications Definitiont ' | |||
This' item concerns Section 1.0 of Technical Specifications and the need to | |||
provide more concise definitions of all plant operational conditions. | |||
NPPD is a member of the BWR Owner's Group Technical Specification | |||
Committee. The comaittee, which has been endorsed by the NRC, is | |||
presently setting up a structure and long-term program to pursue various | |||
improvement projects including: | |||
"eview and update of the Nuclear Safety Operation Analysis (N50A) for BWRs | |||
and check for Technical Specification completeness. | |||
Revise and Upgrade the current Technical Specification bases. | |||
Short term fixes allowable undar current regulations. | |||
~ | |||
NPPD commitment to this committee's proposals offers the best approach to | |||
having more concise operational condition definitions. | |||
This item is closed. | |||
(Closed) Open Item (298/8504-01): "High Range Nobel Gas Effluent | |||
Monitors" | |||
This item involved the lack of calibration data from the vendor to verify | |||
proper calibration of the High Range Noble Gas Effluent Monitors. The | |||
' | |||
. | |||
-4- | |||
RI verified that vendor calibration data for detector certification of the | |||
liigh Range Noble Gas Effluent Monitors was received and filed in the | |||
! chemistry laboratory. | |||
This item is closed. | |||
1 | |||
' | |||
(Closed) Violation (298/8516-02): " Incomplete Test Records" | |||
NRC Inspection Report 50-298/85-15, paragraph 3, documented the results of | |||
an NRC inspection in the area of nondestructive examination test records | |||
associated with the BWR pipe replacement at CNS. During that inspection, | |||
nine generic areas were listed that exhibited various documentation | |||
discrepancies. Eight of the discrepant areas were corrected prior to the | |||
completion of that inspection. The ninth area dealt with numerous | |||
failures of the licensee's inspection department to sign ofi a majority of | |||
the listed visual and liquid penetrant inspection reports. The SRI | |||
reviewed all of the listed work travelers and corresponding weld numbers | |||
during this inspection period and found that the licensee's inspection | |||
2 | |||
department had subsequently signed off the associated inspection reports. | |||
This item is closed. | |||
(Closed) Violation (298/8519-01): " Station Procedures to Prevent or | |||
Control the Use of Voided, Deleted or Superseded Safety-Related Drawings | |||
and As-Built Drawings" | |||
This item involved the licensee's failure to have procedures that provided | |||
document control of drawings identified by as-built (status 1) from | |||
archival (status 2) or construction (status 3). The RI reviewed | |||
Procecure 3.8, " Drawing Control Procedure," Revision 1, dated November 14, | |||
1985. Procedure 3.8 was changed and implemented to correct the | |||
discrepancy. | |||
This item is closod. | |||
(Closed) Violation (298/8519-02): " Approved lock for Safeguards Drawings | |||
Cabinet" | |||
This item involved the licensee's use of a keylock instead of an approved | |||
lock (such as a GSA con:bination padlock) on a storage cabine.t containing | |||
safeguards information. ine licensee replaced the keylock with an | |||
approved GSA combination padlock. NRC Inspection Report 50-298/85-19 | |||
states that replacement was accomplished on the same day the violation was | |||
noted. The RI verified that the lock was installed on the drawings | |||
Cabinet and that it meets GSA requirements. | |||
This item is closed. | |||
' | |||
(Closed) Violation (298/8524-02): " Unattended and Unlocked Security | |||
i Records Storage Container" | |||
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-5- | |||
This item involved the licensee's security storage containers which were | |||
left unlocked and unattended. The RI verified that. changes were made to | |||
Security Procedam 1.5, " Security Administrative Procedure", Revision 0, | |||
dated April 1, 1986. The RI verified that a document control sign-out | |||
sheet titled " Safeguards Information Checkout Log," was developed and | |||
implemented to ensure that the storage container would be locked at all ~ | |||
times except during the removal and replacing of safeguards documents | |||
. normally stored in the cabinet. | |||
This item is closed. | |||
(Closed) Violation (298/8526-01): " Waste Gas Radioactivity Monitor | |||
Calibrations" | |||
This item involved the failure to calibrate gaseous radiation monitors on | |||
a quarterly frequency. The RI reviewed data sheet 8.5.12.1.5, "SJAE Off | |||
Gas Calibration,'? to verify that calibrations have been performed on a | |||
quarterly frequency for all waste gas radioactivity monitors. | |||
This item is closed. | |||
3. Licensee Event Reports Followup | |||
The following Licensee Event Reports (LERs) were closed on the basis of ' | |||
the SRI's inoffice reviews, reviews of licensee documentation, and | |||
discussions with licensee personnel: | |||
LER 85-014, "Viele .on of the APRM Flux Trip Settings and Rod Block | |||
Monitor Trip Settings" | |||
LER 85-020, " Invalidated ADS Surveillance Testing" | |||
' | |||
LER 85-021, " Abnormal Handling Operation of an Irradiated Fuel Assembly" | |||
LER 86-001, " Inadvertent RWCU Temperature Switch Setpoint Change" | |||
LER 86-002, "High Pressure Coolant Injection Overspeed Trip Control Valve | |||
Diaphragm Failure" | |||
LER 86-002, Revision 1, "High Pressure Coolant Injection Overspeed Trip | |||
Control Valve Diaphragm Failure" | |||
i LER 86-003, "APRM Surveillence Testing" | |||
LER 86-004, "RWCU Group III Isolation" | |||
4 | |||
LER 86-005, "High Pressure Coolant Injection Turbine Gland Seal Steam | |||
i Condenser Failure" | |||
i | |||
.-. , . . . . _ _ _ . , , _ .. . - . . . . . , . . _ . . . - . , . - . _ . . . . . _ - . _ , - , . . . . . _ . . , _ _ . . _ . . . _ . . . _ . - _ _ . - . - . . _ . - _ _ . _ , . _ - | |||
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~6- l | |||
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LER 86-006, " Reactor Trip" | |||
LER 86-007, " Main Steam Line High Flow Setpoint Anomaly" | |||
LER 86-008, " REC and DG Inoperative" | |||
LER 86-009, " Emergency Diesel Generator 1 and 2 Switchgear Mounting | |||
Anomaly" | |||
In LER 85-014 listed above, the licensee described a violation of the | |||
Average Power Range Monitor ~(APRM) flux trip and Rod Block Monitor | |||
(RBM) trip set'.ings that occurred on September 20 and 21,1985. The | |||
licensee at#> outed the violation to the failure to revise nuclear | |||
performane . elated procedures 6.2.4.1, " Daily Surveillance (Technical | |||
Specificotions)" and 10.1, "APRM Calibration." Procedure 6.2.4.1 is used | |||
in part to determine if indicated reactor power is equal to actual power | |||
and if not, requires that Procedure 10.1 be performed. | |||
On September 20,1985, at 11:00 p.m. , the NRC authorized the licensee to | |||
operate in single-loop for greater than 24 hours providing that correction | |||
factors were added to the APRM flux trip and RBM trip setting | |||
calculations. On September 24, 1985, the NRC issued Amendment 94 to the | |||
CNS Technical Spccification. The licensee operated in single-loop from | |||
9:17 a.m. on September 20, 1985, to 10:00 a.m. on September 21, 1985. | |||
During that period, the licensee recognized that APRM gain adjustment | |||
factors (GAFs) were not calculated accurately because Procedures 6.2.4.1, | |||
and 10.1 were rot revised to meet the newly amended technical | |||
specification requirements for single loop operation. | |||
During the review of LER 85-014, the SRI verified that the licensee had | |||
not exceeded the required APRM flux trip and RBM trip settings. However, | |||
the SRI determined that the licensee did not have an approved procedure | |||
that would have provided controls for ensuring that Procedures 6.2.4.1. | |||
and 10.1 were revised to reflect the Technical Specification amendment | |||
noted above. 10 CFR Part 50, Appendix B, Criterion V, requires that | |||
activities affecting quality shall be prescribed by documented procedures. | |||
The licensee's failure to have an approved procedure for ensuring that | |||
requirements contained in amendments to license documents such as the | |||
Technical Specification are incorporated as revisions into station | |||
procedures, is an apparent violation (298/8621-01). | |||
4. Spent Fuel Shipment | |||
The NRC inspectors inspected the licensee's activities associated with one | |||
shipment of spent fuel from CNS. Included in that inspection were | |||
, | |||
observations and reviews of applicable procedures, documentation, surveys, | |||
I inspections and shipping document preparation. | |||
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The SRI verifiad by review of licensee documentation, through discussions | |||
with responsible personnel, and by independent inspection that the | |||
licensee completed the following: | |||
o Receiving inspection of railcars and shipping casks. Shipping | |||
, | |||
documents. | |||
o Advance notification of and approval by affected state and federal | |||
agencies. | |||
j o Proper placarding of the transport vehicles. | |||
o Appropriate labeling of the spent fuel shipping casks. | |||
o Establishment of provisions for response by escorts and local law | |||
enforcement agencies. | |||
e Training of escort personnel. | |||
o Testing of communications systems. | |||
^ | |||
c Continual manning of the licensee's communications center (Movement | |||
- | |||
Control). | |||
o Testing of fuel and cask handling cranes, hoists, and tools. | |||
o Proper loading and sealing of the spent fuel shipping casks. | |||
o Surveillance of area radiation monitors, ventilation systems, and | |||
spent fuel pool water level and chemistry. | |||
' | |||
o Update of fuel location and accountability records. | |||
o Applicable quality assurance audits and inspections. | |||
o U.S. Department of Energy and U. S. NRC " Nuclear Material Transaction | |||
Report," DOE /NRC Form 741. | |||
; o Bill of Lading. | |||
o CNS Health Physics Procedure 9.5.3.7, " Cask IF-300 Shipment," | |||
Revision 3, dated December 26, 1985. | |||
; o CNS Nuclear Performance Procedure 10.27, " Cask IF-300 Handling and | |||
Shipping," Revision 5, dated May 8, 1986. | |||
o CNS HP-138, " Contamination Survey - Sample Count Data Sheets." | |||
o CNS HP-141, " Contamination Survey - Railroad Car for IF-300 | |||
Irradiated Fuel Shipping Cask." | |||
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1, o CNS HP-142l " Contamination Survey of IF-300 Shipping Casks." | |||
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- | |||
.o- CNS HP-143, " Radiation Survey of IF-300 Shipping Cask." | |||
, o. .CNS HP-608, " Spent Fuel Shipment Checkoff Sheet and Certificate of | |||
. | |||
Compliance of Number 9001 Conditions for Shipping Spent Fuel." | |||
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o CN'S'HP-14a, " Radioactive Material Shipment Record." | |||
i The following independent radiation and contamination surveys were | |||
performed by the RI and verified to be satisfactory: , | |||
' | |||
o Contact radiation surveys of the shipping casks | |||
i | |||
; o Radiation surveys at a distance of two meters from the cask transport | |||
i vehicles | |||
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o Contamination surveys of the shipping casks surfaces | |||
l 0 Contamination surveys of the ca'sk transport vehicles | |||
The SRI reviewed CNS Procedure 10.27, Revision 5, dated May 8, 1986. . The | |||
; licenree incorporated into Procedure 10.27 specific handling instructions | |||
i | |||
for the G.E. Type IF-300 SPENT FUEL SHIPPING CASK. Also' included within | |||
Procedure 10.27 was Attachment "A," " Handling and Loading of Cask IF-300 | |||
Spent Fuel Shipping Cask Checkoff Sheet." The checkoff sheet provided two | |||
i functions: it identified important steps used in the receipt, inspection, | |||
l preparation, movement, loading with fuel, leak testing, decontamination, | |||
' | |||
loading of the cask onto the transport vehicle, and final preparation for | |||
i shipping; and it provided a checkoff list including spaces for signatures- | |||
1 or initials of personnel who performed or witnessed the performance of key | |||
I steps of the procedure. The SRI verified that Attachment "A" of | |||
;. Procedure 10.27 was properly completed, signed, and dated. | |||
l The spent fuel shipment left the CNS on June 10, 1986. The shipment | |||
consisted of 2 spent fuel shipping casks, each of which contained 18 spent | |||
i fuel bundles. The shipment was transported to the G.E. Morris Operation | |||
I | |||
Complex, Morris, Illinois. The spent fuel casks identification numbers | |||
were: | |||
< | |||
o IF-301 | |||
o IF-302 | |||
The observations, reviews,and independent measurements were conducted to | |||
; verify that spent fuel handling and shipment operations were in | |||
j conformance with the requirements established in the CNS Operating License | |||
! and Technical Specification. | |||
No violations or deviations were identified in this area. | |||
I | |||
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l | |||
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- . _ _ . _ _ _ - , _ , . _ _ _ . _ _ _ _ _ ~ _ . . _ _ . _ , _ _ _ _ _ _ . _ . - _ . . , _ _ _ , _ _ _ _ . . . . _ , . _ . _ . _ . . - . _ _ . _ _ _ _ | |||
. .. . | |||
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5. Operational Safety Verification | |||
The NRC inspectors observed control room operations, instrumentation, | |||
controls, reviewed plant logs and records, conducted discussions with | |||
control room personnel, and performed system walk-downs to verify that: | |||
o Minimum shift manning requirements were met. | |||
o Technical Specification requirements were observed. | |||
o , Plant operations were conducted using approved procedures. | |||
o Plant logs and records were complete, accurate, and indicative of | |||
actual system conditions and configurations, | |||
o System pumps, valves, control switches, and power supply breakers | |||
were properly aligned. | |||
o Licensee systems lineup procedures / checklists, plant drawings, and | |||
as-built configurations were in agreement. | |||
o Instrumentation was accurately displaying process variables and | |||
protection system status to be within permissible operational limits | |||
for operation. | |||
o When plant equipment was found to be inoperable or when equipment was | |||
removed from service for maintenance, it was properly identified and | |||
redundant equipment was verified to be operable. Also, the NRC | |||
inspectors verified that applicable limiting conditions for operation | |||
were identified and maintained. | |||
o Equipment safety clearance records were complete and indicated that | |||
affected components were removed from and returned to service in a | |||
correct and approved manner. | |||
o Maintenance work requests were initiated for equipment discovered to | |||
require repair or routine preventive upkeep, appropriate priority was | |||
assigned, and work commenced in a timely manner. | |||
9 | |||
o Plant equipment conditions such as cleanliness, leakage, lubrication, | |||
and cooling water were controlled and adequately maintained. | |||
o Areas of the plant were clean, unobstructed, and free of fire | |||
hazards. Fire suppression systems and emergency equipment were | |||
maintained in a condition of readiness. It was noted that several | |||
plastic seals were missing from fire plug indicators. Corrective | |||
action was taken by the licensee in a timely manner to replace those | |||
seals. | |||
o Security measures and radiological controls were adequate. | |||
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-10- | |||
The NRC inspectors performed a lineup verification of the following | |||
systems: | |||
o Reactor Core Isolation Cooling (RCIC) | |||
o Residual Heat Removal (RHR) | |||
In preparation for performing the system walk-down of the RCIC system, the | |||
RI conducted a review of and comparison between the licensee's RCIC valve | |||
checklist and applicable as-built drawings. The following documents were | |||
reviewed: , | |||
o System Operating Procedure (SOP) 2.2.67 " Reactor Core Isolation | |||
Cooling" Revision 25, dated April 24, 1986, Appendix A " Valve | |||
Checklist." | |||
o As-built drawing--B&R 2043; for Reactor Core Isolation Cooling. | |||
o As-built drawing--B&R 2049; for Reactor Core Isolation Cooling. | |||
o As-built drawing NPPD 1.0.-19; for Reactor Core Isolation Cooling. | |||
o As-built drawing GE 115D6015; for Reactor Core Isolation Cooling. | |||
The above review identified the following discrepanc'es: | |||
o S0P 2.2.67, Appendix A, listed 72 instrument related valves that were | |||
not numbered ar labeled on applicable as-built drawings I.D.-19 or | |||
11506015. This deficiency is similar to the violation that was | |||
documented in NRC Report 50-298/86-14, as per EP paragraph (5). | |||
Since the licensee will respond to this violation, it is not cited | |||
herein. It will, however, be tracked as an cpen item pending review | |||
, | |||
I | |||
of licensee corrective action. | |||
o S0P 2.2.67 Appendix A " Valve Checklist" Revision 17 had an error in | |||
; valve numbers. The checklist listed two valves as 1-RCIC--164 with a | |||
l different description for each. The correct valve number for the | |||
second description is 1-RCIC-165, not 1-RCIC-164 as is currently | |||
listed. The licensee was notified of the error and has initiated a | |||
procedure revision to correct the typographical error. | |||
The SRI observed the licensee's performance of the following operating | |||
I procedures during the period June 16 through June-19, 1986: | |||
2.1.2, " Hot Startup Procedure," Revision 25, dated April 24, 1986. | |||
( o | |||
I o 2.1.4, " Normal Shutdown From Power," Revision 23, dated April 29, | |||
l 1986. | |||
o 2.2.28, "Feedwater System," Revision 38, dated April 17, 1986. | |||
__- _ _ _ - - _ __ _- . ___ | |||
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-11- | |||
o 2.2.60, " Primary Containment Cooling and Nitrogen Inerting System," | |||
Revision 30, dated January 30, 1986. | |||
On June 16,1986, the 8:00 a.m. calculated 24-hour reactor coolant drywell | |||
unidentified leakage rate was 0.812 gpm. Between the hours of 4:00 p.m. | |||
and 8:00 p.m., drywell leak detection instrumentation indicated that | |||
unidentified leakage had increased from 1.78 gpm to 3.69 gpm. | |||
CNS Surveillance Procedure 6.2.4.1, " Daily Surveillance (Technical | |||
Specifications), " Revision 52, dated February 6,1986, required that if | |||
baseline unidentified leakage rate is between 1 and 2 gpm and the | |||
unidentified leakage rate doubles in a 4-hour period, the reactor must be | |||
shutdown. The licensee commenced shutdown at 8:55 p.m. and drywell | |||
deinerting at 9:22 p.m. | |||
On June 17, 1986, the 8:00 a.m. calculated leakrate indicated an increase | |||
of 2.358 gpm within the previous 24-hour period. The CNS Technical | |||
Specification (TS), Section 3.6.C.4, requires the plant to be in a Cold | |||
Shutdown Condition within 24-hours if leakage increases by 2 gpm within | |||
the previous 24-hour period and that the source of leakage can not be | |||
identified. The licensee reduced power from 30 percent to 18 percent in | |||
preparation for a drywell entry and plant shutdown. An initial drywell | |||
entry was accomplished at 12:05 p.m. and the leakage source identified at | |||
12:29 p.m. The source of unidentified leakage was observed to be an upper | |||
packing gland leak from the reactor recirculatior, pump "B" discharge | |||
valve RR-538. The packing gland was subsequently tightened and | |||
unidentified leakage was reduced to 0.5 gpm. The plant resumed normal | |||
power operation on June 18, 1986. The drywell oxygen level was reduced to | |||
less than 4 percent by 9:00 a.m. on June 18, 1986. | |||
The SRI observed the following licensee actions associated with the | |||
drywell unidentified leakage rate: | |||
o Management meetings including the Station Operations Review | |||
Committee (SORC) | |||
o Continual monitoring of the leak rate | |||
! | |||
l o Evaluation of leak detection system information; planning for, and | |||
l the initiation of, drywell entry teams; implementation of repair | |||
, | |||
activities; and the performance of surveillance testing required by | |||
l the power reduction and repair activities | |||
o Drywell deinerting and reinerting operations | |||
l | |||
l 0 Notification of the NRC | |||
, | |||
o Implementation of procedural and Technical Specification requirements | |||
Several differences were noted between the BWR Standardized Technical | |||
Specification (STS) and the CNS Technical Specif; cation during the leakage | |||
event. Those differences and additional discrepancies included: | |||
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o The STS has separate and-distinct Limiting Conditions for | |||
Operation (LCOs) for the' reactor coolant leak detection' system and | |||
reactor coolunt system leakage rate during reactor power operation. | |||
The CNS Technical Specification, Section 3.6.C.4, requires-plant- | |||
shutdown if unidentified leakage exceeds 5 gpm and a subsystem of the | |||
leak detection system remains inoperable for greater than 30 days. | |||
o The STS has other separate and distinct reactor coolant system | |||
leakage requirements such as: no pressure boundary leakage; less | |||
than 5 gpm unidentified leakage; 25 gpm total leakage averaged over | |||
any 24-hour period; 1 gpm leakage from specified reactor coolant | |||
system pressure isolation valves; and 2 gpm increase in unidentified | |||
leakage within any 4-hour period. The CNS Technical Specification | |||
does not specifically identify no pressure boundary leakage; does | |||
discuss a 5 gpm unidentified leakage; applies the 25 gpm criteria to | |||
identified leakage only and not the total of identified plus | |||
unidentified leakage; does not state criteria for leakage from | |||
specified RCS pressure isolation valves; and establishes the 2 gpm | |||
increase of unidentified leakage over a 24-hour period. | |||
o The CNS Technical Specification requires that primary containment | |||
atmosphere oxygen concentration shall be less than 4 percent by | |||
volume within the 24-hour period subsequent to placing the reactor in | |||
the RUN mode following a shutdown. Deinerting may commence 24 hours | |||
prior to shutdown. The Technical Specification does not address when | |||
the 24-hour inerting clock is started if a required shutdown is | |||
aborted as a result of the initiating problem being corrected before | |||
shutdown is achieved. | |||
The Technical Specification differences noted above will remain an open | |||
item pending discussions between NRC Region IV, the NRC Office of Nuclear | |||
Reactor Regulation (NRR), and the licensee's licensing department | |||
(298/8621-02). | |||
A preliminary notification of an unusual event occurred on June 2 through | |||
June 3, 1986, at LaSalle Unit 2 in Marseilles, Illinois. The cause of the | |||
event was the failure of a reactor scram to occur at the reactor vessel | |||
' | |||
low water level setpoint. Further investigation revealed that level | |||
switches manufactured by Static "0" Ring were the cause of the problem. | |||
. | |||
The RI requested CNS to determine if Static "0" Ring level switches are | |||
! | |||
used on site and if so, in what systems are they installed. CNS responded | |||
to the request in a timely manner. The license identified that six level | |||
switches manufactured by Static "0" Ring are used on site. Those switches | |||
' | |||
are used in the Radioactive Waste Treatment System. No further action was | |||
required. | |||
The tours, reviews, and observations were conducted to verify that | |||
facility operations were performed in accordance with the requirements | |||
established in the CNS Operating License and Technical Specification. | |||
No violations or de<iations were identified in this area. | |||
* | |||
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6. Monthly Surveillance Observations | |||
The NRC inspectors observed Technical Specification required surveillance | |||
tests. Those observations verified that: | |||
o Tests were accomplished by qualified personnel in accordance with | |||
approved procedures. | |||
o Procedures conformed to Technical Specification requirements. | |||
o Tests prerequisites were completed including conformance with | |||
applicable limiting conditions for operation, required administrative | |||
. approval, and availability of calibrated test equipment. | |||
o Test data was reviewed for completeness, accuracy, and conformance | |||
with established criteria and Technical Specification requirements. | |||
o Deficiencies were corrected in a timely manner. | |||
o The system was returned to service. | |||
The RI observed the licensee's performance of the following surveillance | |||
tests on the indicated dates: | |||
June 4, 1986: 6.3.4.1 " Core Spray Test Mode Surveillance Operation," | |||
Revision 18, dated January 30, 1986. | |||
June 4. 1986 6.3.4.2 " Core Spray Motor Operated Valve Operability | |||
Test," Revision 12, dated April 17, 1986. | |||
June 4, 1986 6.2.1.4.1 "PCIS Main Steam Line High Temperature | |||
: Functional Test," Revision 11, dated July 5,1985. | |||
5.4.1 " General Fire Procedure" Revision 20, dated | |||
~ | |||
June 10, 1986 | |||
April 10, 1986. | |||
The SRI reviewed the following completed surveillance tests that were | |||
performed June 18 through June 19, 1986: | |||
o 6,3.1.1, " Primary Containment Local Leakage Tests," Revision 18, | |||
dated March 13, 1986. | |||
o 6.3.10.7, " Primary Containment Isolation Valve Closure Timing," | |||
Revision 12, dated August 8, 1985. | |||
The reviews and observations were conducted to verify that facility | |||
surveillance operations were performed in accordance with the requirements | |||
established in the CNS Operating License and Technical Specification. | |||
No violations or deviations were identified in this area. | |||
l | |||
l | |||
-, .- - - -- . - _ _ . . - - . - , , - , - . ._--. -,. - - - . .-.-.- ..-- -.- - ,,---- - ..- - . | |||
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-14- | |||
7. Monthly Maintenance Obscrvation | |||
The NRC inspectors observed preventive and corrective maintenance | |||
activities. These observations verified that: | |||
o Limiting conditions for operation were met. | |||
: o Redundant equipment was operable. | |||
o Equipment was adequately isolated and safety tagged. | |||
o Appropriate administrative approvals were obtained prior to | |||
commencement of work activities, | |||
o. Work was performed by qualified personnel in accordance with approved | |||
procedures. | |||
, | |||
o Radiological controls, cleanliness practices, and appropriate fire | |||
prevention precautions were implemented and maintained. | |||
o Quality control checks and postmaintenance surveillance testing were | |||
performed as required. | |||
o Equipment was properly returned to service. | |||
Those reviews and observations were conducted to verify that facility | |||
maintenance operations were performed in accordance with the requirements | |||
established in the CNS Operating License and Technical Specification. | |||
i No violations or deviations were identified in this area. | |||
8. Exit Meetings | |||
l Exit meetings were conducted at the conclusion of each portion of the | |||
j inspection. The NRC inspectors summarized the scope and findings of each | |||
l inspection segment at those meetings. | |||
l | |||
l | |||
t | |||
i | |||
}} |
Latest revision as of 09:25, 20 December 2021
ML20203F681 | |
Person / Time | |
---|---|
Site: | Cooper |
Issue date: | 07/23/1986 |
From: | Dubois D, Jaudon J, Plettner E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
To: | |
Shared Package | |
ML20203F659 | List: |
References | |
50-298-86-21, NUDOCS 8607310161 | |
Download: ML20203F681 (14) | |
See also: IR 05000298/1986021
Text
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APPENDIX B
U. S. NUCLEAR REGULATORY COMMISSION
REGION IV
NRC Inspection Report: 50-298/86-21 License: DPR-46
Docket: 50-298
Licensee: Nebraska Public Power District (NPPD)
P. O. Box 499
Columbus, NE 68601
Facility Name: Cooper Nuclear Station (CNS)
Inspection At: Cooper Nuclear Station, Nemaha County, Nebraska
Inspection Conducted: June 1-30, 1986
Inspectors: . 4. didh , 7 // !((o
E. A. Plettner, Resident Inspector, (RI). Date /
O //f?{>
D. L. DuBois, Senior Resident Inspector, (SRI) Date
Approved: e tuf N
CfiTef, Project Section A,.
7 23 !
Da t'e
J/Meadtor
P. faudof,
It oject Branch
8607310161 860724 8
PDR ADOCK 0500
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Inspection Summary
Inspection conducted June 1-30, 1986 (Report 50-298/86-21)
Areas Inspected: Routine, unannounced inspection of previously identified
inspection findings, Licensee Event Reports, spent fuel shipments, operational
! safety verification, and monthly surveillance and maintenance activities.
Results: Withii. the areas inspected, one violation was identified (failure to
have a procedure for controlling activities affecting quality paragraph 3).
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DETAILS
1. Persons Contacted
- G. R. Horn, Division Manager of Nuclear Operations
- E. M. Mace, Plant Engineering Supervisor
- J. M. Meacham, Technical Manager
- J. Sayer, Acting Technical Staff Manager
- C. R. Goings, Regulatory Compliance Specialist
- V. L. Wolstenholm, Quality Assurance Manager
NRC Personnel
-
- W. M. McNeill, Project. Inspector
- D.' L. DuBois, Senior Resident Inspector
,*E. A. Plettner, Resident Inspector
- Denotes those present during exit interview June 27, 1986.
2. Licensee Action on Previous Inspection Findings
,
(Closed) Open Item (298/8110-01): " Lack of Concise and Grouped Technical
Specifications Definitiont '
This' item concerns Section 1.0 of Technical Specifications and the need to
provide more concise definitions of all plant operational conditions.
NPPD is a member of the BWR Owner's Group Technical Specification
Committee. The comaittee, which has been endorsed by the NRC, is
presently setting up a structure and long-term program to pursue various
improvement projects including:
"eview and update of the Nuclear Safety Operation Analysis (N50A) for BWRs
and check for Technical Specification completeness.
Revise and Upgrade the current Technical Specification bases.
Short term fixes allowable undar current regulations.
~
NPPD commitment to this committee's proposals offers the best approach to
having more concise operational condition definitions.
This item is closed.
(Closed) Open Item (298/8504-01): "High Range Nobel Gas Effluent
Monitors"
This item involved the lack of calibration data from the vendor to verify
proper calibration of the High Range Noble Gas Effluent Monitors. The
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RI verified that vendor calibration data for detector certification of the
liigh Range Noble Gas Effluent Monitors was received and filed in the
! chemistry laboratory.
This item is closed.
1
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(Closed) Violation (298/8516-02): " Incomplete Test Records"
NRC Inspection Report 50-298/85-15, paragraph 3, documented the results of
an NRC inspection in the area of nondestructive examination test records
associated with the BWR pipe replacement at CNS. During that inspection,
nine generic areas were listed that exhibited various documentation
discrepancies. Eight of the discrepant areas were corrected prior to the
completion of that inspection. The ninth area dealt with numerous
failures of the licensee's inspection department to sign ofi a majority of
the listed visual and liquid penetrant inspection reports. The SRI
reviewed all of the listed work travelers and corresponding weld numbers
during this inspection period and found that the licensee's inspection
2
department had subsequently signed off the associated inspection reports.
This item is closed.
(Closed) Violation (298/8519-01): " Station Procedures to Prevent or
Control the Use of Voided, Deleted or Superseded Safety-Related Drawings
and As-Built Drawings"
This item involved the licensee's failure to have procedures that provided
document control of drawings identified by as-built (status 1) from
archival (status 2) or construction (status 3). The RI reviewed
Procecure 3.8, " Drawing Control Procedure," Revision 1, dated November 14,
1985. Procedure 3.8 was changed and implemented to correct the
discrepancy.
This item is closod.
(Closed) Violation (298/8519-02): " Approved lock for Safeguards Drawings
Cabinet"
This item involved the licensee's use of a keylock instead of an approved
lock (such as a GSA con:bination padlock) on a storage cabine.t containing
safeguards information. ine licensee replaced the keylock with an
approved GSA combination padlock. NRC Inspection Report 50-298/85-19
states that replacement was accomplished on the same day the violation was
noted. The RI verified that the lock was installed on the drawings
Cabinet and that it meets GSA requirements.
This item is closed.
'
(Closed) Violation (298/8524-02): " Unattended and Unlocked Security
i Records Storage Container"
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This item involved the licensee's security storage containers which were
left unlocked and unattended. The RI verified that. changes were made to
Security Procedam 1.5, " Security Administrative Procedure", Revision 0,
dated April 1, 1986. The RI verified that a document control sign-out
sheet titled " Safeguards Information Checkout Log," was developed and
implemented to ensure that the storage container would be locked at all ~
times except during the removal and replacing of safeguards documents
. normally stored in the cabinet.
This item is closed.
(Closed) Violation (298/8526-01): " Waste Gas Radioactivity Monitor
Calibrations"
This item involved the failure to calibrate gaseous radiation monitors on
a quarterly frequency. The RI reviewed data sheet 8.5.12.1.5, "SJAE Off
Gas Calibration,'? to verify that calibrations have been performed on a
quarterly frequency for all waste gas radioactivity monitors.
This item is closed.
3. Licensee Event Reports Followup
The following Licensee Event Reports (LERs) were closed on the basis of '
the SRI's inoffice reviews, reviews of licensee documentation, and
discussions with licensee personnel:
LER 85-014, "Viele .on of the APRM Flux Trip Settings and Rod Block
Monitor Trip Settings"
LER 85-020, " Invalidated ADS Surveillance Testing"
'
LER 85-021, " Abnormal Handling Operation of an Irradiated Fuel Assembly"
LER 86-001, " Inadvertent RWCU Temperature Switch Setpoint Change"
LER 86-002, "High Pressure Coolant Injection Overspeed Trip Control Valve
Diaphragm Failure"
LER 86-002, Revision 1, "High Pressure Coolant Injection Overspeed Trip
Control Valve Diaphragm Failure"
i LER 86-003, "APRM Surveillence Testing"
LER 86-004, "RWCU Group III Isolation"
4
LER 86-005, "High Pressure Coolant Injection Turbine Gland Seal Steam
i Condenser Failure"
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LER 86-006, " Reactor Trip"
LER 86-007, " Main Steam Line High Flow Setpoint Anomaly"
LER 86-008, " REC and DG Inoperative"
LER 86-009, " Emergency Diesel Generator 1 and 2 Switchgear Mounting
Anomaly"
In LER 85-014 listed above, the licensee described a violation of the
Average Power Range Monitor ~(APRM) flux trip and Rod Block Monitor
(RBM) trip set'.ings that occurred on September 20 and 21,1985. The
licensee at#> outed the violation to the failure to revise nuclear
performane . elated procedures 6.2.4.1, " Daily Surveillance (Technical
Specificotions)" and 10.1, "APRM Calibration." Procedure 6.2.4.1 is used
in part to determine if indicated reactor power is equal to actual power
and if not, requires that Procedure 10.1 be performed.
On September 20,1985, at 11:00 p.m. , the NRC authorized the licensee to
operate in single-loop for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> providing that correction
factors were added to the APRM flux trip and RBM trip setting
calculations. On September 24, 1985, the NRC issued Amendment 94 to the
CNS Technical Spccification. The licensee operated in single-loop from
9:17 a.m. on September 20, 1985, to 10:00 a.m. on September 21, 1985.
During that period, the licensee recognized that APRM gain adjustment
factors (GAFs) were not calculated accurately because Procedures 6.2.4.1,
and 10.1 were rot revised to meet the newly amended technical
specification requirements for single loop operation.
During the review of LER 85-014, the SRI verified that the licensee had
not exceeded the required APRM flux trip and RBM trip settings. However,
the SRI determined that the licensee did not have an approved procedure
that would have provided controls for ensuring that Procedures 6.2.4.1.
and 10.1 were revised to reflect the Technical Specification amendment
noted above. 10 CFR Part 50, Appendix B, Criterion V, requires that
activities affecting quality shall be prescribed by documented procedures.
The licensee's failure to have an approved procedure for ensuring that
requirements contained in amendments to license documents such as the
Technical Specification are incorporated as revisions into station
procedures, is an apparent violation (298/8621-01).
4. Spent Fuel Shipment
The NRC inspectors inspected the licensee's activities associated with one
shipment of spent fuel from CNS. Included in that inspection were
,
observations and reviews of applicable procedures, documentation, surveys,
I inspections and shipping document preparation.
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The SRI verifiad by review of licensee documentation, through discussions
with responsible personnel, and by independent inspection that the
licensee completed the following:
o Receiving inspection of railcars and shipping casks. Shipping
,
documents.
o Advance notification of and approval by affected state and federal
agencies.
j o Proper placarding of the transport vehicles.
o Appropriate labeling of the spent fuel shipping casks.
o Establishment of provisions for response by escorts and local law
enforcement agencies.
e Training of escort personnel.
o Testing of communications systems.
^
c Continual manning of the licensee's communications center (Movement
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Control).
o Testing of fuel and cask handling cranes, hoists, and tools.
o Proper loading and sealing of the spent fuel shipping casks.
o Surveillance of area radiation monitors, ventilation systems, and
spent fuel pool water level and chemistry.
'
o Update of fuel location and accountability records.
o Applicable quality assurance audits and inspections.
o U.S. Department of Energy and U. S. NRC " Nuclear Material Transaction
Report," DOE /NRC Form 741.
- o Bill of Lading.
o CNS Health Physics Procedure 9.5.3.7, " Cask IF-300 Shipment,"
Revision 3, dated December 26, 1985.
- o CNS Nuclear Performance Procedure 10.27, " Cask IF-300 Handling and
Shipping," Revision 5, dated May 8, 1986.
o CNS HP-138, " Contamination Survey - Sample Count Data Sheets."
o CNS HP-141, " Contamination Survey - Railroad Car for IF-300
Irradiated Fuel Shipping Cask."
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1, o CNS HP-142l " Contamination Survey of IF-300 Shipping Casks."
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.o- CNS HP-143, " Radiation Survey of IF-300 Shipping Cask."
, o. .CNS HP-608, " Spent Fuel Shipment Checkoff Sheet and Certificate of
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Compliance of Number 9001 Conditions for Shipping Spent Fuel."
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o CN'S'HP-14a, " Radioactive Material Shipment Record."
i The following independent radiation and contamination surveys were
performed by the RI and verified to be satisfactory: ,
'
o Contact radiation surveys of the shipping casks
i
- o Radiation surveys at a distance of two meters from the cask transport
i vehicles
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o Contamination surveys of the shipping casks surfaces
l 0 Contamination surveys of the ca'sk transport vehicles
The SRI reviewed CNS Procedure 10.27, Revision 5, dated May 8, 1986. . The
- licenree incorporated into Procedure 10.27 specific handling instructions
i
for the G.E. Type IF-300 SPENT FUEL SHIPPING CASK. Also' included within
Procedure 10.27 was Attachment "A," " Handling and Loading of Cask IF-300
Spent Fuel Shipping Cask Checkoff Sheet." The checkoff sheet provided two
i functions: it identified important steps used in the receipt, inspection,
l preparation, movement, loading with fuel, leak testing, decontamination,
'
loading of the cask onto the transport vehicle, and final preparation for
i shipping; and it provided a checkoff list including spaces for signatures-
1 or initials of personnel who performed or witnessed the performance of key
I steps of the procedure. The SRI verified that Attachment "A" of
- . Procedure 10.27 was properly completed, signed, and dated.
l The spent fuel shipment left the CNS on June 10, 1986. The shipment
consisted of 2 spent fuel shipping casks, each of which contained 18 spent
i fuel bundles. The shipment was transported to the G.E. Morris Operation
I
Complex, Morris, Illinois. The spent fuel casks identification numbers
were:
<
o IF-301
o IF-302
The observations, reviews,and independent measurements were conducted to
- verify that spent fuel handling and shipment operations were in
j conformance with the requirements established in the CNS Operating License
! and Technical Specification.
No violations or deviations were identified in this area.
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5. Operational Safety Verification
The NRC inspectors observed control room operations, instrumentation,
controls, reviewed plant logs and records, conducted discussions with
control room personnel, and performed system walk-downs to verify that:
o Minimum shift manning requirements were met.
o Technical Specification requirements were observed.
o , Plant operations were conducted using approved procedures.
o Plant logs and records were complete, accurate, and indicative of
actual system conditions and configurations,
o System pumps, valves, control switches, and power supply breakers
were properly aligned.
o Licensee systems lineup procedures / checklists, plant drawings, and
as-built configurations were in agreement.
o Instrumentation was accurately displaying process variables and
protection system status to be within permissible operational limits
for operation.
o When plant equipment was found to be inoperable or when equipment was
removed from service for maintenance, it was properly identified and
redundant equipment was verified to be operable. Also, the NRC
inspectors verified that applicable limiting conditions for operation
were identified and maintained.
o Equipment safety clearance records were complete and indicated that
affected components were removed from and returned to service in a
correct and approved manner.
o Maintenance work requests were initiated for equipment discovered to
require repair or routine preventive upkeep, appropriate priority was
assigned, and work commenced in a timely manner.
9
o Plant equipment conditions such as cleanliness, leakage, lubrication,
and cooling water were controlled and adequately maintained.
o Areas of the plant were clean, unobstructed, and free of fire
hazards. Fire suppression systems and emergency equipment were
maintained in a condition of readiness. It was noted that several
plastic seals were missing from fire plug indicators. Corrective
action was taken by the licensee in a timely manner to replace those
seals.
o Security measures and radiological controls were adequate.
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The NRC inspectors performed a lineup verification of the following
systems:
o Reactor Core Isolation Cooling (RCIC)
In preparation for performing the system walk-down of the RCIC system, the
RI conducted a review of and comparison between the licensee's RCIC valve
checklist and applicable as-built drawings. The following documents were
reviewed: ,
o System Operating Procedure (SOP) 2.2.67 " Reactor Core Isolation
Cooling" Revision 25, dated April 24, 1986, Appendix A " Valve
Checklist."
o As-built drawing--B&R 2043; for Reactor Core Isolation Cooling.
o As-built drawing--B&R 2049; for Reactor Core Isolation Cooling.
o As-built drawing NPPD 1.0.-19; for Reactor Core Isolation Cooling.
o As-built drawing GE 115D6015; for Reactor Core Isolation Cooling.
The above review identified the following discrepanc'es:
o S0P 2.2.67, Appendix A, listed 72 instrument related valves that were
not numbered ar labeled on applicable as-built drawings I.D.-19 or
11506015. This deficiency is similar to the violation that was
documented in NRC Report 50-298/86-14, as per EP paragraph (5).
Since the licensee will respond to this violation, it is not cited
herein. It will, however, be tracked as an cpen item pending review
,
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of licensee corrective action.
o S0P 2.2.67 Appendix A " Valve Checklist" Revision 17 had an error in
- valve numbers. The checklist listed two valves as 1-RCIC--164 with a
l different description for each. The correct valve number for the
second description is 1-RCIC-165, not 1-RCIC-164 as is currently
listed. The licensee was notified of the error and has initiated a
procedure revision to correct the typographical error.
The SRI observed the licensee's performance of the following operating
I procedures during the period June 16 through June-19, 1986:
2.1.2, " Hot Startup Procedure," Revision 25, dated April 24, 1986.
( o
I o 2.1.4, " Normal Shutdown From Power," Revision 23, dated April 29,
l 1986.
o 2.2.28, "Feedwater System," Revision 38, dated April 17, 1986.
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o 2.2.60, " Primary Containment Cooling and Nitrogen Inerting System,"
Revision 30, dated January 30, 1986.
On June 16,1986, the 8:00 a.m. calculated 24-hour reactor coolant drywell
unidentified leakage rate was 0.812 gpm. Between the hours of 4:00 p.m.
and 8:00 p.m., drywell leak detection instrumentation indicated that
unidentified leakage had increased from 1.78 gpm to 3.69 gpm.
CNS Surveillance Procedure 6.2.4.1, " Daily Surveillance (Technical
Specifications), " Revision 52, dated February 6,1986, required that if
baseline unidentified leakage rate is between 1 and 2 gpm and the
unidentified leakage rate doubles in a 4-hour period, the reactor must be
shutdown. The licensee commenced shutdown at 8:55 p.m. and drywell
deinerting at 9:22 p.m.
On June 17, 1986, the 8:00 a.m. calculated leakrate indicated an increase
of 2.358 gpm within the previous 24-hour period. The CNS Technical
Specification (TS), Section 3.6.C.4, requires the plant to be in a Cold
Shutdown Condition within 24-hours if leakage increases by 2 gpm within
the previous 24-hour period and that the source of leakage can not be
identified. The licensee reduced power from 30 percent to 18 percent in
preparation for a drywell entry and plant shutdown. An initial drywell
entry was accomplished at 12:05 p.m. and the leakage source identified at
12:29 p.m. The source of unidentified leakage was observed to be an upper
packing gland leak from the reactor recirculatior, pump "B" discharge
valve RR-538. The packing gland was subsequently tightened and
unidentified leakage was reduced to 0.5 gpm. The plant resumed normal
power operation on June 18, 1986. The drywell oxygen level was reduced to
less than 4 percent by 9:00 a.m. on June 18, 1986.
The SRI observed the following licensee actions associated with the
drywell unidentified leakage rate:
o Management meetings including the Station Operations Review
Committee (SORC)
o Continual monitoring of the leak rate
!
l o Evaluation of leak detection system information; planning for, and
l the initiation of, drywell entry teams; implementation of repair
,
activities; and the performance of surveillance testing required by
l the power reduction and repair activities
o Drywell deinerting and reinerting operations
l
l 0 Notification of the NRC
,
o Implementation of procedural and Technical Specification requirements
Several differences were noted between the BWR Standardized Technical
Specification (STS) and the CNS Technical Specif; cation during the leakage
event. Those differences and additional discrepancies included:
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o The STS has separate and-distinct Limiting Conditions for
Operation (LCOs) for the' reactor coolant leak detection' system and
reactor coolunt system leakage rate during reactor power operation.
The CNS Technical Specification, Section 3.6.C.4, requires-plant-
shutdown if unidentified leakage exceeds 5 gpm and a subsystem of the
leak detection system remains inoperable for greater than 30 days.
o The STS has other separate and distinct reactor coolant system
leakage requirements such as: no pressure boundary leakage; less
than 5 gpm unidentified leakage; 25 gpm total leakage averaged over
any 24-hour period; 1 gpm leakage from specified reactor coolant
system pressure isolation valves; and 2 gpm increase in unidentified
leakage within any 4-hour period. The CNS Technical Specification
does not specifically identify no pressure boundary leakage; does
discuss a 5 gpm unidentified leakage; applies the 25 gpm criteria to
identified leakage only and not the total of identified plus
unidentified leakage; does not state criteria for leakage from
specified RCS pressure isolation valves; and establishes the 2 gpm
increase of unidentified leakage over a 24-hour period.
o The CNS Technical Specification requires that primary containment
atmosphere oxygen concentration shall be less than 4 percent by
volume within the 24-hour period subsequent to placing the reactor in
the RUN mode following a shutdown. Deinerting may commence 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />
prior to shutdown. The Technical Specification does not address when
the 24-hour inerting clock is started if a required shutdown is
aborted as a result of the initiating problem being corrected before
shutdown is achieved.
The Technical Specification differences noted above will remain an open
item pending discussions between NRC Region IV, the NRC Office of Nuclear
Reactor Regulation (NRR), and the licensee's licensing department
(298/8621-02).
A preliminary notification of an unusual event occurred on June 2 through
June 3, 1986, at LaSalle Unit 2 in Marseilles, Illinois. The cause of the
event was the failure of a reactor scram to occur at the reactor vessel
'
low water level setpoint. Further investigation revealed that level
switches manufactured by Static "0" Ring were the cause of the problem.
.
The RI requested CNS to determine if Static "0" Ring level switches are
!
used on site and if so, in what systems are they installed. CNS responded
to the request in a timely manner. The license identified that six level
switches manufactured by Static "0" Ring are used on site. Those switches
'
are used in the Radioactive Waste Treatment System. No further action was
required.
The tours, reviews, and observations were conducted to verify that
facility operations were performed in accordance with the requirements
established in the CNS Operating License and Technical Specification.
No violations or de<iations were identified in this area.
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6. Monthly Surveillance Observations
The NRC inspectors observed Technical Specification required surveillance
tests. Those observations verified that:
o Tests were accomplished by qualified personnel in accordance with
approved procedures.
o Procedures conformed to Technical Specification requirements.
o Tests prerequisites were completed including conformance with
applicable limiting conditions for operation, required administrative
. approval, and availability of calibrated test equipment.
o Test data was reviewed for completeness, accuracy, and conformance
with established criteria and Technical Specification requirements.
o Deficiencies were corrected in a timely manner.
o The system was returned to service.
The RI observed the licensee's performance of the following surveillance
tests on the indicated dates:
June 4, 1986: 6.3.4.1 " Core Spray Test Mode Surveillance Operation,"
Revision 18, dated January 30, 1986.
June 4. 1986 6.3.4.2 " Core Spray Motor Operated Valve Operability
Test," Revision 12, dated April 17, 1986.
June 4, 1986 6.2.1.4.1 "PCIS Main Steam Line High Temperature
- Functional Test," Revision 11, dated July 5,1985.
5.4.1 " General Fire Procedure" Revision 20, dated
~
June 10, 1986
April 10, 1986.
The SRI reviewed the following completed surveillance tests that were
performed June 18 through June 19, 1986:
o 6,3.1.1, " Primary Containment Local Leakage Tests," Revision 18,
dated March 13, 1986.
o 6.3.10.7, " Primary Containment Isolation Valve Closure Timing,"
Revision 12, dated August 8, 1985.
The reviews and observations were conducted to verify that facility
surveillance operations were performed in accordance with the requirements
established in the CNS Operating License and Technical Specification.
No violations or deviations were identified in this area.
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7. Monthly Maintenance Obscrvation
The NRC inspectors observed preventive and corrective maintenance
activities. These observations verified that:
o Limiting conditions for operation were met.
- o Redundant equipment was operable.
o Equipment was adequately isolated and safety tagged.
o Appropriate administrative approvals were obtained prior to
commencement of work activities,
o. Work was performed by qualified personnel in accordance with approved
procedures.
,
o Radiological controls, cleanliness practices, and appropriate fire
prevention precautions were implemented and maintained.
o Quality control checks and postmaintenance surveillance testing were
performed as required.
o Equipment was properly returned to service.
Those reviews and observations were conducted to verify that facility
maintenance operations were performed in accordance with the requirements
established in the CNS Operating License and Technical Specification.
i No violations or deviations were identified in this area.
8. Exit Meetings
l Exit meetings were conducted at the conclusion of each portion of the
j inspection. The NRC inspectors summarized the scope and findings of each
l inspection segment at those meetings.
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