IR 05000352/1981013
| ML20031G008 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 09/15/1981 |
| From: | Ebneter S, Finkel A, Varela A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20031F984 | List: |
| References | |
| 50-352-81-13, 50-353-81-11, NUDOCS 8110200635 | |
| Download: ML20031G008 (7) | |
Text
t
.
.
.
U.S. NUCLEAR REGULATORY COMMI'SION OFFICE OF INSPECTION AND ENF0ki MENT
'
50-352/81-13 Report No.
50-353/81-11 bu-3bz/61-13 50-353/81-11 Docket No..
CPPR-105 License No.
CPPR-107 Priority Category A
--
Licensee:
Philadelohia Electric Comoany 2301 Market Street Philadelnhia, Pen'isylvania 19101 Facility Name:
Limerick Generatina Station, Unit Nos.1 and 2 Inspection at:
Limerick, Pennsylvar.ia Inspection conducted:
August 31 through September 4,1981 Inspectors:
.d$
5 74 /
,3 A. E. F,inkel, Reactor Inspector datd signed 4). Y u h c)/a b /
s g
A. A. Varela, Reactor Inspector
a te ' signed
-
date signed Approved by:
t2 9//(dP/
5. U. tbneter, Unlet, Plant Systems Section Ida te' signed Engineering Inspection Branch, DETI Inspection Summary:
!
(Unit No.1) Inspection on August 31 - Seotember 4,1981 (Report No. 352/81-13)
Areas Inspected: A routine, unannounced inspection of electrical procedures,
<
f elect *'. cal cable installation and terminations, raceway installations, spray cond
!
excavation, and licensee actions on previous inspection findinns. The inspection l
involved 45 inspector hours onsite by two regional based inspectors.
Results: No noncompliances were identified during the inspection.
(Unit No. 2) Inspection on August 31 - Sentember 4,1981 (Renort fjo. 353/81-11)
Araas Inspected: A routine unannounced inspection of electrical orocedures,
[
- licensee actions on previous inspection findings, and spray pond excavation. The
!
Inspection involved 15 inspector hours onsite by two regional based inspectors.
Results:
No noncompliances were identified during the inspection.
'
l l
l l
Region I Form 12 l
(Rev. April 77)
!
8110200635 811001 i
PDR ADOCK 050003S2 O
'
__
.__
.
.
.
.
.
DETAILS i
1.
Persons Contacted Philadelphia Electric Company Mr. D. Glohecy, Quality Assurance Engineering
Mr. J. Goodbred, Quality Assurance Engineering
Mr. P. Naugle, Engineering
Bechtel Power Corporation
.
Mr. L. Brown, Soils Test Engineer Mr. R. Bryan, Project Field Superintendent
Mr. H. Foaes, Quality Contro1' Engineering
Mr. H. Foster, Project Field Quality Control Engineer
Mr. E. Klossin, Project Quality Assurance Engineer
Mr. G. Koch, Lead Subcontract Engineer
Mr. R. Lanemann, Project Electrical Superintendent
Mr. J. Martin, Lead Site Quality Assurance Engineer
Mr. R. Nelsor.,
Geologist Mr. T. Ritt, Quality Assurance Engineer
Mr. D. Shaw, Project Field Engineer
Mr. D. Thompson, Assistance Project Field Quality Control Engineer
Mr. M. Tokolics, Quality Assurance Engineer
Mr. S. Wybranski, Senior Lead Subcontract Engineer
Morrissey Corporation G. Barwis, Construction Superintendent i
US Nuclear Regulatory Commission J. Durr, Sc.;ior Resident Inspector
denotes those present at the exit meeting of September 2, 1981
denotes those present at the exit meetings of September 2 and
4, 1981 denotes those present at the exit meeting of s rtember 4, 1981
2.
Plant Tours (Units Nos. I and 2)
Periodically during the inspection, tours were made of the Unit Nos. 1
'
and 2 primary reactor containments, the reactor buildings and the control structure, and excavation of the west spray network area for pipe support foundations and the spray pond network foundation.
.. _.
._._
-
.,.-.
_,... _ _.
_. _.. _, _. _.. _ _. _.... - - _ - _... -
-
.
.
.
The inspectors examined completed work, work in progress, quality control activities and equipment storage, handling, and maintenance areas. They discussed the technical aspects of the work with craftsmen, supervisors, and engineers to assure work was being performed in accordance with requirements.
Curing the tours, the inspector verified that in place electrical equipment was covered with heat applied, cables not terminated were coiled and end caps applied, conduits were capped and general cleanli-ness was being maintained within the electrical areas.
During the tour of the spray pond area, the inspector discussed the areas of construction specification and documentation with the geologist.
No item of noncompliance was identified.
3.
Licensee's Actions on Previous Inspection Findings (Closed) Unresolved Item (352/78-04-01, 353/78-02-01) The qualification data to establish that the shrink tubing used in safety-related cable splices was not identified in the receiving documentation. A letter from the licensee dated July 15, 1981, Code No. PLB-3290E stated that the qualifications documented and submitted by Conax was reviewed and found acceptable.
(Closed) Unresolved Item (352/78-04-02, 353/78-02-02) The Conax connectors used on the Limerick penetration are standard connectors, certified by the vendor to meet pull requirements and not contain mercury, but did not state that they were qualified to LOCA environ-ment. The licensee identified that the connectors were qualified for the environment, reference letter PLB-3290E.
(Closed) Unresolved Item (352/79-11-09) Maintenance logs not issued for inplace storage of load center switchgear 10B201 and 108202.
Job Rule JR-R-10 Revision 16, titled Storage Control Withdrawal Itatruction - Equipment and Material, was changed to require the storage maintenance engineer (ME) to code and sign maintenance storage cards.
The inspector verified that the (ME) was coding and signing the maintenance forms and that quality control inspection, on an audit basis, was verifying the (ME) function.
(Closed) Unresolved Item (352/79-13-01, 353/79-12-01) Not meeting 1" separation criteria during the 'nstallation of cable / conduits between redundant divisional enclosed iaceways.
The licensee issued a 10 CFR 50.55(e) report titled " Final Report for Limerick Generating Station Electrical Raceway Separation Deficiency" No. (SDR#9)
dated April 23, 1980 which states the action taken by the licensee to correct and control the problem. The inspector verified that quality control inspection did re-inspect and verify that the 1" separation requirement is being complied with on completed work and on new installations.
-
-
- -
- -
-
-
-
-
-
- - -
-
.
-
-
.
.
.
(Closed) Unresolved Item (352/80-08-07) Cable damage during the installation of the Power Generation Control Center (PGCC). The licensee verified that additional cables had nicks and scratches on the cable covers. The inspection effort and corrective action is identified in the following documentation:
--
QUAL 2-10-2 QAFOM #1042
--
Documentation has been corrected to require evaluation of this type of condition.
(Closed) Unresolved Item (352/80-03-03, 353/80-03-01') Observed Condition Notices (OCN's) not being dispositioned in a timely manner.
The OCN is GE method of identifying and correcting all types of drawing - equipment differences and includt s non-safety data as well as safety-related data.
The licensee receives a report on all OCN's and the action taken to correct the problem. The licensee reviews the OCN list to assure.that timely disposition of listed items occurs.
The inspector reviewed the latest OCN list and verified that the licensee was reviewing the items for disposition and timely action.
(Closed) CDR (80-00-01) Electrical Raceway Separation Deficiency Limerick Station - Units 1 and 2.
A final 10 CFR 50.55(e) report dated April 24, 1980 has been received and reviewed by the NRC. The inspector reviewed the drawing E-1406 and the inspection documentation QCIR's to assure that the changes have been issued and the inspection requirements have~been identified.
4.
Reactor Protection System (RPS)
The inspector inspected the electrical power cable installation of the hydraulic control units of the control rod drives for the Unit 1 system.
Bechtel drawing E-129 sheet 1, revision 7, which is for both units 1 and 2, requires a #10 AWG power cable to the hydraulic control units.
Internal wiring going to the solenoids uses a #12 AWG wire. The internal wire length appears to be in lengths under a few feet. The following reference documentation were used in the evaluation of this circuit design.
--
F.P.8031-M-1-C71-1020-E-1 through E-16 Reactor Protection's System Elementary Diagrams,
--
F.P.8031-M-1-C71-1040-E-1 through E-16 Reactor Protection's System Interconnections Diagram,
--
F.P.8031-M-1-A61-4050-L-3 Electrical. Equipment for Safeguard System Design Specifications, F.P.8031-M-1-C71-1010-F-1 Reactor Protection's System I.E.D., and
--
--
F.P. 8031-M-110-16 Reactor Controls, Inc. Unit 1 CROHS outside piping (Plan 90 ).
j
- -
--
.
. - - -. -
.
.
.-
. _.-
.
..
..
.
4 I
The length of the solenoid internal wiring should not affect the electrical operation of the solenoids in this design.
T No item of noncompliance was identified.
5.
Electrical Installation Procedures
,
The inspector reviewed the following electrical procedures to ascertain that the licensee was in conformance to the Quality Assurance program as i
described in the facility SAR.
Job Rule (JR)-E-10, Revision 2, dated March 11, 1980 titled --
--
l Permanent Plant Cable Installation and Termination,
'
Job Rule (JR)-E-1, Revision 11, dated January 16, 1980 titled -
--
Insulation Resistance lesting,
--
Job Rule (JR)-E-2, Revision 7 dated February 19, 1981 titled -
Raceway Regulation,
--
Job Rule (JR)-E-4, Revision 0, dated August 7, 1979 titled -
Electrical Equipment Checkout and Panel Modifications, and,
,
--
Wire and Cable Notes and Details, E-1412.
During this inspection, the inspector verified that the licensee was in compliance with the above referenced documentation.
,
No item of noncompliance was identified.
.
!
!
6.
Observation of Electrical Installation and Termination i
!
The inspector witnessed the power cable installation and termination of cable No. 1 Ball 608 A, B, and C going to the ESW cubicle of the 10All6 3-
,
safeguard bus D12. The licensee's quality control inspector verified i-the installation hold points as defined in the inspection plan prior to final termination of this cable.
The inspector verified that the power cable terminations were~in com-i pliance with the requirements of E-1412 procedure entitled " Wire and Cable Notes and Details." The inspector also verified that the quality control inspection hold points were verified by the quality control inspector.
The inspector also verified that the power cable 1 Ball 608 A, B, and C was in the specified raceways and that the' quality control records i
verified that the-cable installation was complete prior to the termination installatio'n.
i
.. ~. - - - _.,, - -.. _.,,.. -, -,..
....,,,,........ -,........,, - - -,..... _
,--._,,,,._,...,.-.,.,,.4.,
_,-.,,-.
__.
.
.
._ _
.
_.
_ _. _
..
.
,
No item of noncompliance was identified.
.
7.
Electrical Components Review of Quality Records
The inspector ascertained that the records for receipt, storage, handling, identification and installation of the safeguards bus D11 and 012 for unit I were inspected and in conformance with established procedures.
i The work accomplishment was in accordance with established procedures and power wiring and teroination wcrk was authorized to proceed prior to work being performed.
No item of~ noncompliance was identified.:
8.
Spray Pond a.
Review of Quality Assurance Implementing Procedures
Excavation of overburden and rock for the spray pond is subcontracted to the Morri_sey Company. Soil conforming to specified gradation for subsequent mixing with bentonite clay to be used as pond lining was inspected and_ tested by Bechtel. The Bechtel QA program, QC procedures will control spray pond activities as required by spect-fications C-94 and C-95.
This includes approval of competent rock for pipe support foundations, control and monitoring of blasting, treatment of fracture zones, construction of reinforced concrete pipe supports and tests and control of lining, soil backfill and other l
related operations.
b.
Record Review
- The inspector reviewed field inspection reports and tests performed by Bechtel during soil excavation and stockpiling for use in the spray pond lining. Twenty-two gradation tests on 56,500 cubic yards of material were observed performed per' ASTM D-422. Some out-of-specification material was found in the above records.
However,
the reports state that rescreening and verification tests are
required for the pond liner installation.
1.
c.
Observat on of Weathered Rock Excavation i
The inspector observed excavation of weathered rock being performed
,
by various mobile power units to finished grade of the pond and,
,
-to competent rock for the west quadrant spray network pipe
'
supports. 'The west half of the pond is to final grade for pond bottom and, approximately half of the west network area has been excavated deeper to suitable depths to firm rock as directed by the geologist.
The inspector observed that, as required by Specification C-94 revision 2 and note #5 of engineering drawings
-
ei-
-
1,y+q
,,,9
,.p%
---%y__,cy.
.p-.
-7 p9-a t-
-l iM+g -mw
+g 9v+#
ve y e-T e
- *
-ge---gwS-
-M'-'-b
-
tut
-
.-
_
.
-_.
-
. _._.. _ __
__
. _. _
__
_..
. _ _
-
..
.
_
'
number C-1102 and 1128, the rock excavated below pond bottom for pipe support foundations was being evaluated by the Bechtel geologist.
'
The drawings require rock capable of supporting a foundation load of 30 Kips per square foot. The inspector considers the firm rock exposed for pipe support foundations has-this capability.
,
No items of noncompliance were identified.
9.
Exit Interview The inspectors met with the licensee representatives (denoted in paragraph
-
1) at the conclusion of the inspection on September 2, 1981.and September 4, 1981.
In addition, the NRC Senior Resident Inspector, Mr. J. Durr, attended both exit meetings. The inspectors summarized the purpose and scope of.the inspections and findings.
.The licensee acknowledged the
,
findings, i
,
t
i d
i I
i-t i
-
_ _ _. -,
-..,.
.
- _,
. ;.-. ;. _,,.. _.. _ - _, _ -. ~. _ _., _ _. -. _ _ _ _
.-_--;,_.__.-.-,._.._._..._,_..