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acLa,t T,:Eco,' Assistant'Diractu'forI.icc;i;.!$.3, ".la
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?!:eting scheduled for Friday 0:ttr 9 uith.WE aad its esosultant M l!cctiss rocently idantified at:aic deficicr.cy.
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UNITED STATES
. NUCLEAR REGULATORY COMMISSION h
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0GT 161981 EMORANDUM FOR:
Darrell G. Eisenhut, Director, Division of Licensing, NRR THRU:
Robert Tedesco, Assistant Director forf ensing, NRR
' 1 FROM:
Frank J. Miraglia, Chief, Licensing Branch #3, DL StBJECT:
.DIABLO CANYON, UNIT 1 WEEKLY STATUS i
The_ following sumarizes the significant activities associated with Diablo Canyon,,
Unit 1 for the period starting Friday, October 9 through Thursday, October 15, 1981'.
i On' Friday, October 9 a meeting between NRC, its consultants, the applicant,
-and their consultants was held in Bethesda, Maryland to address in further
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detail the~ recent1'y identified potential deficiency of the-seismic design of certain piping and associated equipment in the Unit 1 contaiment annulus area.
On Wednesday, October 14, NRR/0IE went to the applicants corporate headquarters in San Francisco, California to. conduct an audit review of the seismic piping systems and. associated equipment. The meeting is currently scheduled to conclude on Friday, October 16, 1981.-
Frank J. Miraglia, Ch.ief Licensing Branch #3 Division of Licensing l
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DISTRIBUTION L-Reading RLTedesco Docket (50-275/323) -
Docket - (50-327/328)
NRC PDR MEMORANDUM FOR: Darrell G. Eisenhut Director-JLee Division of Licensing EAdensam-CStable -
.FROM:
Robert L. Tedesco, Assistant Director.
MDuncan for Licensing L PDR
- Division of Licensing NSIC TIC
SUBJECT:
-WEEKLY STATUS'- DIABLO CANYON AND SEQUOYAH-TERA The following sumarizes the significant activities associated with Diablo Canyon, Unit No. I and Sequoyah Unit No. 2 for the period starting Friday, Octobert16 through Thursday, October 22, 1981.
Diablo Canyon On Friday, October 16 an NRC seismic audit review team concluded its three day meeting at PG&E's Corporate o'ffice in San Francisco.
On Monday, October 19, issued meeting sumary of October 14-16 meeting with PG&E.
On Tuesday, October 20, NRR transmitted comment on PG&E's, consultant's, Dr. Cloud, draft report on the seismic reverification program to OI&E via conference call.
Sequoyah The reactor coolant pump repairs have been completed. Unit No. 2 is ready to begin heating up. However TVA intends to heat up Unit No.1 first (Unit 1 has just completed a 30-day maintenance outage), since the auxiliary. boils can not supply enough-steam to heat up both units simultaneously. Unit No.1 is expected to be at full power by October 25.
1981, and Unit f!o. 2 is scheduled to reach initial criticality by October 29, 1981. This plant was first licensed on June 25, 1981.
l Original signed by Sobeg,1. Tedesco
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' Robert L. Tedesco, Assistant Director for Licensing Division of Licensing cc:
H. R. Denton
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UNITED STATES
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OCT 23 i981 Docket Nos.-
50-275/323 MEMORANOUM FOR:.
Z. R. Rosztoczy, Chief Equipment Qualification Branch Division-of Engineering FROM:
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Equipment Qualification Branch
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Division of Engineering THROUGH:
P.' A. DiBenedetto, Section Leader Equipment Qualification Branch Division of Engineering SU8 JECT:
TRIP REPORT--AUDIT OF PG&E DOCUMENTATION CONCERNING ENVIRONMENTAL QUALIFICATION OF ELECTRICAL EQUIPMENT PER NUREG-0588 FOR DIABLO CANYON UNITS 1 AND 2 -
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Plant Name:
Diablo Canyon Units 1 and 2 Docket Nos.
50-275/323 i
Licensing Stage:
Low Power License
-Responsible Branen: Licensing Branch #3 Project Manager:
B. Buckley Completion Date:
N/A 2i' Review Status:
Continuing During the week of August 31 - September 4,1981, staff members from the
-Equipment Qualification Branch and consultants from EG&G Idaho visited the
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PG&E offices in San Francisco, California, to reevaluate the applicant's central document file which contains environmental qualification records (EQ) for electrical instrument and control equipment. A list of participants is i-provided in Attachment 1.
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The purpose of the audit was twofold:
first, to determine the completeness of.
the applicant's rereview of the entire central files, and second, to evaluate i-the adequacy of the applicant's response to various qualification deficiencies identified by the staff during the previous audit.
4 The applicant identified 26 equipment items as environmentally qualified:
3 items are exempt; 7 items are TMI-related equipment (their qualification information is being developed, with a completion date of January 1,1982);
l 7 ftems are being replaced; and 2 items required additional information for
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the qualification files to be completed.
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The staff reviewed the entire central files, which consisted of 45 files;-29 of these files contain qualification documentation for the process instruments, and the remaining files contain qualification documentation for the electrical equipment.
' Details of the review of these files:are provided in Ati$chment' 2..
The results of the' review are as'follows:
The staff determined that, for equipment items that are qualified, (1) the applicant ha.s provided adequate. test reports and (2) these reports
. provide assurance that the qualification parameters envelope the environ-ment parameters where each equipment item is installed.
Safety margins were considered and quantitatively demonstrated, with large margin, in most cases; in a few cases where the MSLB temperature margin is not-demonstrated, the applicant provided analyses and appropriate justifica-tions to extend the test temperature to cover the MSLB peak requirement. -
The staff also determined that the applicant has previded adequate margins 4
to satisfy the' safety margin requirements in NUREG-0588.
The completeness of each file reflects the strong effort expended by the applicant during the EQ review.
The qualification files are well' organized p
and self contained. The applicant has typically provided the following in each file: a worksheet, a component evaluation report; environmental r
profiles; design and purchasing documents; supporting documents such as v
radiation analyses, chemical analyses, parameters variation analyses, and test reports; and other documentation pertaining to equipment qualification.
Ready references--such as qualification methods, analyses, anomalies, and so on--are provided on the worksheet to direct the reviewer to-specific pages of appropriate test reports.
The applicant provided appropriate summary sheets, with adequate detail on outstanding items, anomalies, qualified life, surveillance requirements, and equipment component replacement programs.
These summary sheets will be provided to the plant maintenance force so that the equipment qualification can be properly maintained and enhanced throughout plant
' life.
During the audit, the staff identified various concerns about test anomalies, and the applicant was able to provide adequate responses to these concerns.
The concerns are addressed in Attachment 2.
Overall, the staff determined that each test report anomaly was adequately addressed.
For cases where the equipment is qualified by type testing, the staff l
found appropriate analyses to ensure that equipment componeats to be j
qualified are the same as those described in the test reports.
e The applicant's FSAR value for the chemical concentration of 2000 ppm L
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baron in the spray composition of H 803 and NaOH was compared to the test 2
spray composition for each test report.
The applicant demonstrated that the resultant pH for each item of tested equipment is compatible with that of th<t plant spray.
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For equipment items that are considered conditionally qualified, the
-applicant identified the particular outstanding items and provided proposed fixes.to qualify the equipment..A typical fix is in the form of a surveillance and replacement program for aging deficiencies until detailed
- aginganalysesarecomplete.
The applicant has determined by analysis that there is no potential fo'r submergence of Class IE equipment outside containment. The staff reviewed the information in the FSAR pertaining to potential flooding outside containment and the methodology used to calculate this potential. On the basis of this review, the staff concludes that the applicant has adequately
~ ad' dressed the po'tential submergence of Class 1E equipment outside contain-ment.
The staff determined from the review that the overall status of electrical equipment important to safety at Diablo Canyon'is adequate. The equipment status is summarized in Attachment 3.
N. 8. Le Equipment Qualification Branch
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R. Vollmer W. Johnston P. 01Benedetto B. Buckley M. Yost, EG&G EQ Section Personnel
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PARTICIPANTS - DIABLO CANYON UNITS'l AND 2 ENVIRONMENTAL QUALIFICATION AUDIT AUGUST 31 - SEPTEMBER 4, 1981 PG&E NRC B. S. Lew
. P. A. DiBenedetto b
..g,. H. Moore
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N. B. Le T. H. Crawford R. J. Stre,igh EG&G D. A. Brarid J. V. Roaca M. F. Hinton
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W. Vahlstroms-R. A. Borgen J. W. Colwell B. D. Smith Westinahouse
'N F. J. Dan C. O. Coffer C. E. Faust G. C. Wu
- J. E. Herbst
- R. F. Locke
- E. R. Kahler
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- L. Stanchina
- H. H. Isakari
- J. B. Hoch
- J. R. Herrera
- D. L. Robinson
" Attended exit interview only.
Diablo Canyon E@ Trip Report 1-1
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ATTACHMENT 2 STATUS OF AUDITED ITEMS Item IH-1: Rosemount Pressure Transmitters, Model 1152 Items are located inside containment, as pressure transmitters for pressurizer pressure. They are located at the 122-ft level, to provide various indicating,
. control, and trip functions.
~ Bounding environmental qualification parameters'are maximum. temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppa baron and NaOH solution, pH = 8.8) and radiation (8.66 x 10s rads). The required operating time is 5 min postaccident operation time.
The environmental qualification' document cited is Rosemount Test Report No. 117415, Revision 8.
Using this report, the applicant has attempted to demonstrate the environmental parameters described above; however, no spray was described.
The applicant has stated that device PT-457, located at elevation 94 ft, will be relocated to elevation 122 ft.
/'~S Because of the lack of spray, the applicant has concluded that the items will be replaced by qualified units by 6/1/82, and has provided the staff with acceptable justification for interim operation of the;Rosemount transmitter.
Item IH-2: Barton Pressure Transmitters, Model 764 (Lot 1)
Items are located inside containment, as differential pressure transmitters for pressurizer level, at elevation 96 ft; for containment sump level, at elevation 98 ft; and for steam generator (narrow) level at elevation 122 ft.
-Bounding environmental qualification parameters are maximum temperature (LOCA, 272*F, MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm baron and NaOH solution, pH = 8.8), and radiation (3.67 x 107 rads). The required operating times are 5 min and 4 mo postaccident operation.
The environmental qualification documents included Test Report NS-TMA-1950, dated 9/29/78, and supplement NS-TMA-2120, dated 9/14/79.
Postaccident aging calculations and the submergence test report were referenced to qualify the equipment.
The staff found that the submergence test is not valid without analysis of temperaturs requirement. The applicant concurred with the staff finding and has stated that the equipment will be replaced with the new qualified Barton 764 model by 1/1/82. Adequate justification for interim operation has been provided by the applicant.
Diablo Canyon EQB Trip Report 2-1
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3 Item IH-3:
Barton Pressure Sensors, Model 351-
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Items are located inside containment, as containment pressure sensors, at elevation 104 ft.
Bounding environinental qualification parameters are identifie2i as maximum temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (1005), chemical spray (boric acid 2000 ppa boron and NaOH solution, pH =
8.8), and radiation (3.67 x 107 rads). The required operating times are 5 min and 120 days postaccident operating time.
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.t The audit of the environmental qualification documentation revealed that e
a although the basic test report was based on a water-filled device, adequate.
documentation was available to justify the oil-filled device for interin j
operation until a new test report for the oil-filled device becomes available.
The staff noted that the tested temperature exceeded the MSLB specification by
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56*F and the pressure margin by 19 psig. The radiation qualification value for the oil-filled device was 1.8 x 10 rads. Aging analysis supporting the claim of 40 yr life was reviewed and found adequate.
The applicant will update the central file when the test report becomes avail Die.
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Item IH-4:
H. E. Sostman RTDs Models.118348-1-Narrow Range, 119018-1-htde Rance i
The Sostman RTDs are used in the containment to monitor the reactor coolant i
.m system loop hot and cold legs for reactor trip and safety injection initiation l
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d signals. The wide range RTO is also used for postaccident monitoring.
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bounding environmental parameters are temperature (344*F), pressure (47 psig),
e humidit (100%), chemical s rads narrow range, pray (boric acid and NaOH, pH 8.8), and radiation (7 x 10 1.6 x 10s rads wide range). The required operating i
l time under the OBE is 5 min for the narrow range and 120 days for the wide range. The RTDs are mounted inside containment at elevation 107 ft.
The documentation file includes a worksheet, a component evaluation reg rt,
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environment profiles, purchasing documents, and supporting document.: such as radiation analyses, chemical analyses, temperature variation acceptance analyses, and two Westinghouse topical reports, WCAP-9157 and WCAP-9745.
The file is l
well organized and self contained.
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The test performed for qualification met the requirements for pressure, humidify, and chemical spray composition.
The spray pH was 8.5 rather than 8.8, but it -
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is considered acceptable because of the exposed materials and the duration of i
the spray.
The maximum temperature achieved was 332*F, but it is acceptable because the 344' peak lasts less than 1 min. The 10s rads exposure is s6fficient j
for the narrow range instrument but, because of a recent change in wide-range j
operability requirements, it is insufficient for the wide range. No aging qualificatica has been done.
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The applicant does not consider this item qualified. An aging stud l
narrow-range instrument will be done to complete its qualification.y of the
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wide-range instrument will be replaced by the time of first refueling shutdown.
i The applicant has provided justification for interim operation.
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l Diablo Canyon EQB Trip Report 2-2
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Item is. located inside containment at elevation 140 ft.
..cThis item was audited previously and had one. deficiency:
the postaccident
.W O oper:bility time was not demonstrated at the earlier audit. During the review Q,fy
- of the quelf fication package, the staff found adequate documentation to support-
%panalysis showing that the environment surrounding the degradable por the 1 yr operabifity requirement. This documentation was in the form of an
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. j the fan cooler motor.is'not harsh, except for radiation.
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C The motor wasfrradiated to 2'x los rads b' fore the des'ign event test. Test e
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'results showed-that because of total enclosure and heat exchanger cool.ing, the temperature at the motor windings and bearings would essentially be normal y
during postaccident conditions.
If2 Item IH-6: -ASCO Solenoid Valves, Models NP 8316 55V, NP 8316 E35V, NP'8316 55E.
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Items are mounted inside containment at elevation 99 ft;'they are used in the
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postaccident sampling system. The required operability time under harsh 3j #
environment is 30 days.-
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The limiting environmental parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig) relative humidity (100%), chemical spray (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of boric acid and NaOH spray, at 8.8 pH) and radiation (3.6 x 107. rads total
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integrated dose). The required operating time under the. harsh environment 'is 30 days.
tD The' documentation provided in the file includes a component evaluation report, bases for the required parameters, aging and beta analyses, and Isomedix Test y
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Report AQS 21678/TR Revision A.
The file is well organized and self contained.
The review of the fils shows that similar valves were exposed to an environment m =- that equaled or exceeded the above environment. There were two anomalies in
'the test that involved test installation hardware. The file stated that the t
, applicant uses qualified Conax connectors and, therefore, will not have these problemst The aging analysis shows a qualified life of 11.4 yr.
The app 1(cant considers thde valves qualified and will replace the age-sensitive elastomers at 10 yr intervcis. The reviewer considers this file complete.
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2 Item IH-7A:
Lfmitorque-S$ Valve Actuators (SM8-0-40, SMB-00-40. SMB-000-40, Class H InsuT3 tion)
Items are located inside containment, at various locations above the flood level..
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The bounding environmental qaulification parameters are temperature (LOCA,
..-,27?'F;'MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical
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sp ny (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation v.,
(6.34 x 107 rads). The required operating time is 1 yr in the harsh environment.
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~ The qualification test report, Limitorque Valve Actua' tor Report No. 600456, and g
other documents were. reviewed and found to contain adequate information.
The applicant has demonstrated the equipment is qualified for 1.5 yr; this will be extended by further analysis.
The items will be maintained every 18 mo.
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Limitorque SMB '(Class B Insulation) y Items are located inside containment ~at various 1ocations above flood level.
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The bounding environmental qualification parameters are temperatur (LOCA,
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. 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical n
. spray (boric acid 2000 ppm boron,and NaOH solution, pH = 8.8), and radiation (3.6 x 107 rads).
The required operating time in the harsh environment is l'
8 hr.
The staff review of the qualification file identified two concerns:
The applicant'shoul'd confirm use 'of qualified. lubrication in switch mechanisms.~ In response, the applicant confirmed that Gulf _ Crown EP-0 lubricant is used and a surveillance and maintenance program has been developed.
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The applicant should identify the weak links in the device.
In response, the applicant identified the lubricant as weak link material. Seals and gaskets are being replaced at the same interval as.the grease.
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The qualification document indicated the equipment has a qualified life of 1.5 yr.
Item IH 8: NAMCO EA 180 Items are located inside containment, at various locations, at elevation 99 ft.
3 The bounding environmental qualificatica parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humi~dity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH.= 8.8), and radiation (3.67 x 107 rads). The required operating time in the harsh enviratiment is 120 days.
l The qualification file was reviewed and was found to contain adequate information.
The staff was concerned that the applicant did not address all problems that became evident during testing.
However, the applicant provided the st'aff with appropriate discussion on the problem of cracked gaskets and on the existence of water and residues. The applicant will use qualified Conax convectors to resolve this concern. A surveillance program and gasket-replacement program will take care of future water intrusion.
L The qualified life for these items is 2.45 yr, with gasket replacement at 2 yr intervals.
Diablo Canyon EQB Trip Report 2-4
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Item IH-9: Valcor So'lenoid Valve, Model V526-5295-36
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The Valcor valves are used inside and outside containment for post-LOCA sampling.
The limiting environmental parameters are temperature (LOCA, 272*F, MSLB, 344*F) pressure (47 psig), relative humidity (100%), chemical spray (boric
. acid and NaOH solution, pH = 8.8), and radiation (5.3 x 107 rads total-3 integrated dose). The required operating time under a harsh environment is 1 yr.
i The documentation provided in the file includes a component evaluation report; bases.for the required parameters; aging operability and beta radiation evaluations; and Valcor Qualification Test Report No. QR52600-5940-2.
The staff review of the file showed that a solenoid valve with identical
' electrical components'was exposed to an environment that equaled or exceeded the above environment with the exception of postaccident operability time.
The test was run for 31 days rather than 1 yr but was extended by analysis to 2.48 yr because of a large middle-to-end-of-test margin. The aging analysis shows a lifetime of 57.53 yr because of accelerated aging. This aging analysis 4
included the statement that Arrhenius extension is a relative measure and is not meant to be an absolute value for solenoid life.
I-The change in qualified life _fros'2.4 yr during the previous audit of this file to 57.53 yr during this audit was stated to be a misinterpretation of an aging analysis that has been performed for a different plant where these
.S solenoids are normally energized. This analysis should never have been applied to the Diablo Canyon Plant. The test report evaluation of greater than 40 yr
(,,j was backed up by an independent evaluation showing 57.53 yr.
4 The reviewer considers that this file is complete and that plant surveillance will discover any new degradation not determined by present aging analysis methods.
Item IH-10: ASCO Non-NP, Models 8316, 8321 Items are located inside containment at various locations that may be submerged during design-basis events.
Items should fail in safe positions.
The bounding environmmental qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressur? (47 psig), relative humidity (100%), chemical spray (boric acid 2000 pppm :.oran and NaOH solution, pH = 8.8), and radiation (5.3 x 107 rads). There is no required operating time in the harsh environment, i
except the equipment must fail in safe position.
The. documentation provided in the file includes a component evaluation report, bases for the required parameters, aging and beta analyses, a failure analysis on the valves, and Isomedix Test Report No. AQS 21678/TR, Revision A.
The file is well organized and self contained.
The review of the file shows that similar valves were exposed to an environment that equaled or exceeded the above parameters with the exception of submer-c gence. The lack of submergence testing is justified because ingress of water s...
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tioning of the valve. The failure analysis verified this. Similarity is demonstrated because these valves have had their plastic internals replaced with brass and stainless steel, which makes them electrically identical. The aging analysis shows a qualified life of 11.4 yr.
' The applicant considers these valves qualified and will have the age-sensitive ela'stomers replaced at 10 yr.' intervals. The reviewer considers this file complete.
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Item IH-11: Fisher & Porter Transmitters, Model 1082496 i
Items are located outside of containment, as feedwater flow transmitters for a protective function i.n the feedline break and for input signal to steam generator level control.
The bounding environmental qualification parameters are' temperature (300*F),
pressure (9.26 psig), relative humidity (100%), and radiation (4 x 104 rads).
i The, required operating time in the harsh environment is 5 min.
Equipment is not subject to flooding.
The enviionmental qualification documentation indicates that the three tested
-units failed between 6 and 8 min into the accident and, therefore, do not meet the 1-hr margin. - The applicant has decided to replace these transmitters with Barton 764 transmitters by 6/30/82.
Qualification documentation for the 3
. Barton transmitters is to be complete by 1/1/82.
j The applicant has provided adequate justification for interim operation with complete failure mode analysis.
Ite~m IH-12:
Limitorque (Reliance Motor), Mcdel SMC-04 Items are located outside of containment as the auxiliary feedwater isolation valve motor operators.
Equipment is not subject to floodings.
The' bounding environmental qualification parameters are temperature (209*F),
i pressure (1.3 psig), relative humidity (100%), and radiation (1.14 x 10s rads),
i-The required operating time in the harsh environment is 1 yr postaccident.
The environmental qualification documentation demonstrates that the items are qualified for 1.5 yr, based on analysis of weak-link material found in the.
equipment.
The staff was concerned with the apparent discrepancy between the 4
2000-cycle mechanical aging requirem'ent, and a total of only 1817 demonstrated cycles. The applicant responsed that (1) the actuators are not used for normal functions and (2) as a very conservative estimate, the actuators would i
be required to cycle 25 times a year and would cause 1000 cycles in 40 yr.
The 1817 cycles are enough to satisfy the requirement.
Referring to a statement that the GE 115 area is exposed to wind and rain, the applicant explained that the only exposure is to a wet containment wall with rainwater running down the side. No water will get to the equipment.
The responses to the staff's concerns were acceptable. The reviewer considers the file complete.
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Item IH-13:
Fisher & Porter Transmitters, Model 50EP1041 Items are located outside containment, for use.as main steamline sensors to provide a safety injection signal on low steamline pressure.
The bounding environmental qualification parameters are temperature (300*F),
pressure (9.26 psig)', relative humidity (100%), and radiation (104 rads).
The required operating time in the harsh environment is 5 min.
The envir.onmental quall'fication document (WCAP-9157) shows that the units tested are not modified for the hostile environment applications. The three tested units failed between 6 and 8 min into the accident.
The appifcant has decided to replace the equipment with qualified transmitters by 6/30/82.
The applicant provide'd adequate failure modes analyses and justification for interim operation. The staff was concerned whether the back-up signals for the steam pressure protection function are from qualified sources. The applicant.
i explained that the high steam flow and low-low T sensing functions are provided by devices located in areas where they DE not subject to harsh environment.
Item IH-14:
ITT General Control Electro-Hydraulic Actuators, Model NH92K6002E2L80 a
Items are located ouside of containment, in area GE, at elevation 115 ft, for use as auxiliary feedwater control valve actuators.
.g i
The bounding environmental qualification parameters are temperature (209'F),
4
-j pressure (1.3 psig), relative humidity (100%), and radiation (1.14 x 10s rads).
The required operating time in the harsh environment is 1 yr postaccident.
Equipment is not subject to spray or flood.
Theaudhtoftheenvironmentalqualificationdocumentationconfirmedthatthe test item was exposed to the above required conditions with ade'quate margin.
Aging qualification is'still considered ongoing; however an interim aging qualification for 2 yr is adequately justified.
Documentation included a system component evaluation worksheet, a component i
evaluation report, test reports from ITT General Controls, and a copy of Gulf Report No. RTC12494, paragraphs 3.1 and 3.2.
The staff has two concerns.
First, the staff is concerned about the capacitor failure on the single phase motor. The applicant indicated that an actual test to show the qualification of the capacitor is under way; the staff will l
review this report to confirm its results. The second concern is the temperature margin, required at 209'F (short peak) and tested at 212*F.
However, because the equipment is located outside of containment (and accessible for surveillance and maintenance), the staff considered this concern to be minimal.
Item IH-15: Target Rock Valves, Model 79A8-001 Items are to be located inside containment, at elevation 120 ft, for the reactor vessel head vents operation.
i s,
l Diablo Canyon EQB Trip Report 2-7 l
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)
. Theboundingenvironadntalqualificationparametersaretemperature(LOCA,
,~ /
272*F; MSL8, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiatton
'(5.3 x 107 rads). The required operating time in the harsh environment is 120 days postaccident.
The qualification. file.was reviewed. The' applicant's file indicates'that the reactor vessel head vents are not hooked up; however, qualification documentation will be added to the central file by 8/1/82 when the Target Rock valves are made functional.
This equipment is a TMI-2 postaccident action itep.
Item IH-16:
Limitorque (Reliance Motors), Model SMB-0, 00, 000, 1, 2 Items are located outside of containment at various locations, for valve motor operators equipment is not subject to flooding.
~
~
The bounding environmental qualification parameters are temperature (209'F),
pressure (1.3 psig), relative humidity (100%), and radiation (1.68 x 107 rads).~ The required operating time in the harsh environment is 1 yr.
The environmental qualification documents include Limitorque Test Report 80003. Aging analysis shows that the equipment is qualified for 1.5 yr, and Wyle will conduct an investigation to extend the qualified life. Although O
submergence qualification is not required, the file also contains.NSC PGE-01-27 i
Table 6.3 to address submergence.
J The ~ staff found that the' tested profile adequately envelopes the bounding parameters required for the equipment.
One anomaly was found in the test report, which described the indicating light as dia during the test. The staff questioned if the applicant has investigated this anomaly. The applicant indicated that the' indicating light dims because of the way the test circuit was set up and Diablo Canyon's indicating circuit is different from that of the test circuit. The staff found the response acceptable.
Item IH-17: ASCO Non-NP Solenoid Valves These valves are used outside containment for containment isolation. They are pilots for valves which will not be re-opened after isolation. The applicant has exempted these valves from qualification and has shown proper justification.
This justification includes failure analysis, effect of failure on the system, and fault analysis for interface with other safety devices.
The reviewer considers this file complete.
Item IH-18:
Fisher & Porter Transmitters, Model 1082496 These transmitters are used outside containment for a reactor coolant flow signal to input to a protective function (reactor trip, 2/3 any loop) in a loss-of-coolant accident.
l l
. Diablo Canyon EQB Trip Report 2-8
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~
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accident does not result irr a release of reactor coolant or secondary coolant
!inside containment where the transmitters are located.
Inaddition,theapplicant'hasdeterminedthattIesetransmitterswillbe replaced with the qualified Barton 764 transmitt,ers by 8/31/82.
The applicant has provided proper justification'for' interim operation, which includes failure analysis, effect of failure on.the system, and fault analysis for interface with other safety devices.
The reviewer considers this file complete.
8 Item IH-19:
Burns RTD The RTD is installed inside containment to measure pressurizer vapor space temperature. This signal (low) and pressure (low) are required to open the RHR suction valve; high signals from these will close the RHR suction valve.
L The applicant has determined that no safety function or maintaining is required for the.RTD and, therefore, it can be exempted from qualification.
Proper l_
justification for operation has been provided.
The reviewer considers this file complete.
l Item IH-20: Hydrogen Recombiner This is a new equipment item being added to Diablo Canyon as a post-TMI-2' ites.
It is located inside containment and will not be operational until 1/1/82.
The applicant has stated that the qualification. documentation for this equipment will be available in the central file before the equipment is made operational.
~
Because the equipment is not in use, justification for interim operation is not required.
The reviewer conside'rs this file complete.
t.
[
Item IH-21: Technology for Energy Corp. Aeoustic Monitor, Model 1414 System Item is located.on the pressure relief lines near the safety valves and is i
used to provide direct indication to the operator of safety valve status.
The equipment is mounted at elevation 140 ft.
272*F; MSLB, 344*F), pressure (47 psig), paramet'ars are temperature (LOCA The bounding environmental qualification relative humidity (100%), chemical spray-(boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation
-(4.67 x 107 rads). The required operating time in the harsh environment is 120 days postaccident.
The applicant's files indicated that the acoustic monitor was under oing qualification testing by TEC with a scheduled completion date of 9/ 0/81.
When available, the qualification report will be added to the central file.
Diablo Canyon EQB Trip Report 2-9
C T
Proper justification for interim' operation including failure modes analysis has been provided by the applicant.
N...."
The reviewer considers this file complete.
Item IH-22:
Barton Pressure Transmitters, Model'332 Items are located outside containment and are used to trip the plant on an-HELB inside containment and to provide pressure-monitoring function.
The applicant has indicated that these transmitters are not qualified for a significant radiation environment but receive a significant dose during re-circulation modes; therefore, the available monitoring time may be limited to a few days.
The applicant has resolved this deficiency by adding' wide-range containment pressure transmitters for postaccident monitoring.
These will be operational V U82.
The normal range monitors will remain to provide the trip function and will be qualified to a mild environment.
Proper. justification:fot interim operation has been provided; this justifica-tionsincluded failure 3... odes. analysis.
~.....
'T5e[ reviewer conh}ifeh,i,Ihis file adequate.
y
' (y)5,;kemIH-23: ;BaktbfessureandDifferentialPressureTransmitters,Model763 z.+:.'. n..
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' Items are located' outs.ide containment in area GE, elevation 115 ft, and are use'd to indicate. auM1.f ary feedwater flow.
The bounaing environmental qualification parameters are temperature (300 'F),
pressure (9.26 psig), relative humidity (100%), and radiation (5.29 x 108 rads).
The required operating time in the harsh environs 4'nt-is 120 days postaccident.
The environmental qualification documentation indicates that the equipment is part of an ongoing Barton and Westinghouse qualification program. Westinghouse has qualified the transmitter, and Barton has partially completed the program.
The qualification documentation will be added to file when it becomes available in V V82.
l The applicant has indicated that the failure'of these devices will not affect I
other safety systems.
Normal maintenance, calibration, and surveillance l
procedures will provide assurance that this equipment remains qualified.
2 The reviewer considers this file complete.
(
Item IH-24: Barton Pressure and. Differential Pressure Transmitters, Model 764
(
Items are located inside containment, at elevation 122 ft, for steam generator level (wide range) indication.
,,y
[
Diablo Canyon EQB Trip Report 2-10 l-l n_.
o' O.,
The bounding environmental qualification parameters are temperature (LOCA,.
272*F; MSLB 344'F), pressure (47 psig), relative humidity (100%), chemical spray (baric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads).
The required operating time in the harsh environment is
.4 mo postaccident.
Th'a environmental qualificiation documentation indicates that the equipment is part of an ongoing Barton and Westinghouse ~ qualification program. Westinghouse
.has qualified the transmitter, and Barton has partially completed the program.
Documentation will be'added to the file when it becomes available in 1/1/82.
The applicant has indicated that the failure of these devices will not affect other safety systems. Normal maintenance, calibration, and surveillance procedures will provide assurance that the equipment remains qualified.
The reviewer considers this file complete.
Item IH-25: Hydrogen Monitors The monitors are being added as a post-TMI-2. revision. The applicant's file indicates that the equipment will not be utilized in plant operation until 1/1/82.
Qualification documentation will be added to the central file before the equipment becomes operational.
( N.
No justification for interim operation is needed.
The reviewer considers this file complete at the time of the audit.
Item IH-26: Victoreen. Containment Radiation Monitors This file contains information which indicates-essentia1y that these monitors are being added as a post-TMI-2 revision.
The equipment will not be in operation until 1/1/82.
Qualification documentation will be added to the central file before the equipment becomes operational.
No justification for interim operation is needed.
The reviewer considers this file complete at the time of the audit.
Item IH-27: Barton Indicating Switches, Model 288A Items are located outside containment in the mild environment area.
The applicant has indicated that there is no thermal transient associated with the accident and, therefore, thermal degradation will be of minimal impact in affecting the capability for this equipment to mitigate an accident.
l The applicant's file contains ITT Test Report No. R3-288A-1 which demonstrates that the switch can be exposed to 3 x 108 rads (reqdired, 1.71 x 108 rads) without sign of degradation.
l-l l
l Diablo Canyon EQB Trip Report 2-11 l
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The applicant identified aging qualification as an open item; however, there i
is justification for operation until materials' investigation and thermal aging analyses are completed.
Furthermore, the applicant has indicated that the
' equipment is being incorporated into the maintenance and surveillance program and will be inspected at intervals of 18 mo.
The reviewer considers this file adequate at the time of the audit.
- Item IH-28:
Rotorif Motor Operators, Model 14NA2 Items are located outside containment and must be able to function in a severe environment.
The valve need not operate postaccident, but must continue to indicate, posit-fon for 1 yr postaccident.
i The environmental qualification file indicates that the maintenance and sur-veillance program is to be implemented when the aging analysis is completed.
Justification for interim operation is adequate.
The staff has 'one major conc'ern:
radiation effects are not addressed in the In addi' ion, failure of the indicating circuit should be investigated file.
t because continuous indication is essential. The applicant has committed to
- address this concern.
Item EH-1: GE Electrical Penetrations,'odel NSO-2, 3, 4 M
g,,
Items are located at containment penetration area elevations 120 ft - 135 ft.
The bounding environmental ~ qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 ra'ds). The' required operating time in the harsh environment is 120 days postaccident, with the exception of penetration for containment fan coolers, which~ has an operating time requirement of 1 yr.
~~
The qualification file includes adequate test reports to demonstrate that the equipment.is q~ualified. Test parameters envelope equipment environmental parameters by significant margins, with the exception of MSLB temperature.
The applicant has provided an MSLS heat transfer analysis which demonstrates that the epoxy. temperature (with margin) does not exceed the test temperature.
Penetration epoxy is rated for a 40 yr life at 572*F.
Because penetration conductors will operate at 482*F maximum, this lower temperature provides margin. Qualification methods include simultaneous testing, separate effects testing for spray, and radiation analysis adequate to demonstrate the 40 yr qualified life. claimed by the applicant.
Item EH-2: Oko' nite Cable, EPR/Hypalon i
Items are located outside containment at various locations and are not subject to flood.
The bounding environmental qualification parameters 'are temperature (300*F),
pressure (9.26 psig), relative humidity (100%), and radiation (6.7 x 107 rads).
The required operating time in the harsh environment is 365 days.
Diablo Canyon EQB Trip Report 2-12 e.
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' The qualification file has adequate documentation'to provide assurance that L
'the cable is qualified for 40 yr.
Test parameters adequately envelope the O,
required equipment environmental parameters.
Even though chemical spray is not required, test documentation also demonstrated that the cable is qualified.
. for spray solution of equivalent pH'= 10.5.
The applicant has indicated that Hypalon is the only material that may be subjected to 08A deterioration,~and has provided added margin in that steel conduits and fittings.will prevent, direct spray on the Hypalon.
surveillance progr'am-has been devel'oped to detect any trend that may lead to common mode failure mechanisms.
The staff considers the file adequate.
Item EH-3: -Raychem Cable, Flametrol Items are located outside containment at.various locations and are not subject to flood.
The bounding environmental qualification parameters are temperature (300*F,
pressure (9.26 psig), relative humidity.(100%), and radiation (6.7 x 107'ra)ds).
The required operating time in the harsh environment is 365 days postaccident.
The' qualification test report for the cable is FIRL Report F-C4033-1, with
~
supporting aging analysis from Wyle Report No. 26336-1. Material susceptible
(./.
to radiation aging is identified as Hypalon. Test parameters envelope the required environmental parameters by substantial margin.
Chefiiical spray was demonstrated for a resultant pH of 9.5 - 11, even though. it is not required.
Thermal preaging and analysis were found to be adequate to demonstrate a 40 yr life.
The staff has requested the applicant to identify cables by part numbers to demonstrate that cables used at Diablo Canyon are the same as those tested.
The response this concern was adequate.
The staff found the file to be adequate.
Item EH-4: Rockbestos Cable, Model Firewall III Cross-Linked Polyolefin Insulation Items are located inside containment at various locations for low power (480-V) and signal (120-V) cables.
The bounding environmental qualification parameters are temperature (LOCA, 772*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). ~ The required operating time in the harsh environment is
~365 days postaccident.
The applicant's files state that the only Class 1E cables located inside con-tainment that are subject to submergence are low-voltage power and signal cables. These cables should perform their functions before the cables are
~
submerged.
Diablo Canyon EQ8 Trip Report 2-13 4 -
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. The environmental' qualification documentation demonstr'ates that-test parameters adequately envelope the required environmental parameters.
Extra margin is e
' provided because all cables are in conduits which provide an effective shield against chemical spray and thermal transient during MSLB.-
The staff was concerned that.the teist repoit did not indicate that the tested cable was to carry load current compatible to load current that may be used
- for application at Diablo Canyon.
The appifcant provided adequate response to this concern.
The applicant also has a surveillance program to ensure that qualified life is maintained.
The staff found the file adequate.
Ites EH-5: Boston Cable, Silicone /Hyoalon Model No. 8993-H-007 (7/C), -005
.(5/C)
Items are located insi'de containment at various locations for use as low power (480-V) and signal (120-V) cables.
The bounding environmental qualification parameters are temperature (LOCA, 272*F; MSLB, 340*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). The required operating time in the harsh environment is
.. 3
, i 120 days postaccident.
.~
The applicant's file states that the only Class 1E cables. located inside con-i tainment that are subject to submergence are low-voltage power and signal L
cables. These cables.should perform their functions before they are submerged.
The principal test reports are Boston Reports Nos. 73J020 and 75J093. The environmental qualification documentation demonstrates that test parameters adequately envelope the required environmental parameters.
Extra margin is l
provided because all cables are in conduits which provide an effective
(
shield against chemical spray and thermal transient during an MSLB.
i The staff was concerned t' hat the test report did not indicate that the tested
. cable was to carry load current compatible to load current that may be used for application at Diablo Canyon. The applicant provided adequate response to this concern.
The applicant also has a surveillance program to ensure that qualified life is j
maintained.
The staff found the file adequate.
~ Item EH-6: Okonite Cable, Tefzel j
~_.
Items are located inside containment at various locations for use as low power (480-V) and signal (120-V) cables.
Diablo Canyon EQB Trip Report 2-14 1,_........
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m The bounding environmental qualification parameters are temperature (LOCA, s../
272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads).
The required operating time in the harsh environment is 120 days postaccident.
The environmental qualification document contains test.information on four different specimens: 8
- 7/C #12 AWG, 15 mil Tefzel, 2 mil Nomex, and 20 mil Tefzel. These specimens were sequentially tested as follows:
thermal and radiation preaging accident simul'ation (T, P, CS, H), submergence testing, and postaccident operability testing.
Cable _s were preaged for 168 hr at 180 C.
Tested parameters envelope the required environmental parameters with large margin, except temperature (the tested temperature was 346*F vs. the required.
MSLB temperature of 344*F). The applicant has indicated that the cables at Diablo Canyon are protected by stainless steel enclosures and steel conduit fittings; therefore, margins are additionally.provided.
Test reports 1.ndicated that test samples were energized at'600 V, with 21-ampere load current throughout the test. Submergence tests indicated that cables were submerged in water for 16 hr, and passed the high postulated, 2500-V proof test for 5 min.
The reviewer considers that the file contains adequate qualification documenta-tion to support the claimed qualified life of 40 yr for the cable. Additionally, the applicant has. indicated that surveillance and maintenance programs on these cables are being developed to detect any trend that may lead to a common-mode failure mechanism.
l-Ites EH-7:
ITT Cable Thermocouple, Model Exane II DAC-02A-AKP l~
Items are located inside containment, at various locations for use as low power L
(480-V) and signal (120-V) cables.
The bounding environmental qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47-psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 10? rads). The required operating time in the harsh environment is 120 days postaccident.
The applicant's file states that the only Class IE cables located inside con-tainment that are subject to submergence are low-voltage power and signal cables. These cables should perform their functions before they are submerged.
The environmental qualification documentation (Isomedix Test Report 375-03) l; demonstrates that for the Exane II cable, test parameters adequately envelope l
the required environmental parameters.
Extra margin was provided because all cables are in conduits which provide an effective shield against chemical spray and thermal transient during an MSLB. The exposure to the test condition was only for 30 days, but the operability extension analysis calculates operability at more than 120 days.
~
The staff was concerned that the test report did not indicate that the tested cable was to carry load current compatible to load current that may be used for application at Diablo Canyon.
The applicant provided adequate response to this concern.
Diablo Canyon EQB Trip Report 2-15 l
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- The appifcant al'so'h'as a surveillance program to ensure that qualified life is
)
' maintained.
N./
The. staff found the file to be adequate.
Item EH-8: Continental Cable, Silicone Rubber, S/N'CC2193 Items are located inside containment at various locations for use at thermocouple
- and signal'(120-V) cables.
- The bounding"envi Rinmental qualification parameters are temperature'(LOCA,
- 272*F; MSLB, 344*F), pressure (47.psig), relative humidity (100%), chemical spray-(boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). The required operating time in the harsh environment is.-
120. days postaccident.
The applicant has stated in the file that the only Class.1E cables located
- inside containment that are subject to submergence are low-voltage power and signal cables. Thse cables should perform their functions before they are submerged.
The environmental qualification documentation demonstrates that the test para-meters adequately envelope the required environmental parameters. Extra margin was provided because all cables are in conduits which provide an effective shield against chemical spray and thermal transient during an MSLB.
T The test parameters for' temperature and pressure were recorded as 280*F and uf 35 psig, respectively, which did not envelope the required temperature and pressure. The applicant has provided adequate analysis to demonstrate that the test equivalent operability exceeded the required 120-day operability by more than 101 The file contains adequate documentation to support the claimed 40 yr quali-fied life of the cable. Additionally, the applicant-has stated that a sur-veillance and maintenance program is being developed to detect any trends that mayLlead to common mode failure mechanism.
During the review, the staff has noted that one specimen has failed the high pot (3.6-kV) test; the applicant responded that the failed cable was exposed directly to spray nozzle during test, and because cables at Diablo Canyon are inside steel conduits, they would not experience the same mechanism that has
~
caused the cable to fail. Additionally, the tested cable successfully carried the signal throughout the duration of the test.
Item EH-9: Boston Fan Cooler Cable Items are located inside containment at elevation 120 ft to supply 480-V power to five containment fin coolers during the low-spread mode required during a design-basis accident.
The bounding environmental qualification parameters 'are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical f
Diablo Canyon EQB Trip Report 2-16 th--
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- A spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation i
7 j
(5.34 x 10 rads). The required operating time in the harsh environment is v
. 365 days postaccident.. ~
Qualification' documentation includes PG&E' Test Report 7580-71, Boston Test Report 9273 for Hypalon LOCA, Conax Test Report 353.10 for Kapton LOCA, Boston Test Report 8904 for Hypalon chemical spray, Franklin Reports F-C5160-1 and F-C3683, and Boston Test Report 73J020 for cable LOCA; Dupont Bulletin H-1C covers the Kapton properties.
These documents describe a series of sequential testing (thermal aging,
~
simultaneous T, P, H and postaccident operability) and separate effects testing (radiation,-chemical spray, and postaccident operability). The test parameters envelope the required environmental parameters, except for the temperature, which has'a test valu'e of 302*F; the applicant has provided in the file an analysis to extend the test temperature to a compatible required MSLB tempera-ture. Extra margin is provided because all cables are in steel conduits which provide an effective shield against chemical spray thermal transient during MSLB.
The staff had one concern:
the document did not indicate that the test current is compatible with the fan cooler load current.
However, the applicant provided the staff with adequate data to resolve.this concern.
The reviewer considers the file complete.
Item EH-10:
Raychem Cable, Stilan Items are located inside containment at various locations for use in low-voltage and signal cables (120 V).
The bounding environmental qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical
- spray (boric acid '2000 ppe baron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). The required operating time in the harsh environment is 120 days postaccident.
The applicant's file states that the only Class 1E cables. located inside containment that are subject to submergence are low-voltage power and signal cables. These cables should perform their functions before they are submerged.
The environmental qualification documentation demonstrates that test parameters adequately envelope the required environmental parameters.
Extra maigin is provided because all cables are in conduits which provide an effective shield against chemical spray and thermal transient during NSLB.
The staff had one concern:
some IR readings were denoted as <10s ohms. The applicant's response was that the megger did not have a lower scale than 10' ohms and that the signal (v.oltage and current) was successfully passed through the cables during the test. Other anomalies referred to during the test were adequately addressed. The reviewer considers that information provided by the applicant is acceptable, and the file is complete.
Diablo Canyon EQB Trip Report 2-17 9'1
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'Ites EH-11:
Raychem. Splices, Heat Shrink Type WCSF-N
' d
-Items are located inside and outside containment at various locations, for use
'as cable splicing.
The bounding ' environmental qualification parameters are temperature.(LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray-(boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation O ays p s den 4
This file was reviewed by the staff during the first audit and found acceptable.
Items were i' entified as qualified for 40 yr by the applicant, and were supported.
d by adequate qualification documentation. A surveillance and. maintenance program is being incorporated.to detect any trend that may lead to common failure mechanisms.
Item EH-12: Conax Conductor Seals, Model N-1101
~
Items are located inside containment at various elevations. These seals are to be used with the heat shrink WCSF-N splices.
The bounding environmental qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical-
-spray (boric acid 2000 ppm. boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). The required operating time in the harsh environment is 120 days postaccident.
a This file was reviewed by the staff during the first audit and found acceptable.
Items were identified as qualified for 40 yr by the applicant, and were supported by adequate qualification documentation. A surveillance and maintenance program is being incorporated to detect any trend that may lead to a common failure mechanism.
Item EH-13:
- 0. Z. Gedney Conductor Seals, Type CSBI (Hypalon Seal)
Items are located inside containment at various elevations. These seals are i
l to be used with conductors that do not have WCSF splices.
I The bounding environmental qualification parameters are temperature (LOCA, 272*F; MSLB, 344*F), pressure (47 psig), relative humidity (100%), chemical spray (boric acid 2000 ppm boron and NaOH solution, pH = 8.8), and radiation (4.67 x 107 rads). The required operating time in the harsh environment is 120 days postaccident.
'This file was reviewed by the staff during the first audit and found acceptable.
Items were identified as qualified for 40 yr by the applicant, and were supported by adequate qualification documentation. A surveillance and maintenance program is being incorporated to detect any trend that may lead to common failure mechanism.
s Diablo Canyon EQB Trip Report 2-18 I
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Item EH-14: Westinghouse RHR and Charging Pumo Motors' s
(
Items are located outside containment.
The RHR motor.is mounted in area K at s.-
elevation 73 ft, and the charging pump motor is mounted in area K, at elevation 58 ft, in the auxiliary buildi,ng.
These motors are not subject to flood. -The bounding environmental qualification parameters are temperature (maximum ambient, 90*F) and gamma radiation (6.78 x 10s rads). The required operating time for these items is 365 days postaccident.
The audit of the environmental qualification documentation confirmed that the motors are qualified to the above requirement with large margin.
The test method used is separate effects and analysis..
The reviewer considers the file complete and adequate to support the claimed 40 yr qualified life of these items. The applicant has also indicated that the surveillance and maintenance program will be incorporated to detect any trend that may lead equipment to a common mode failure.
Item EH-15: Westinghouse Safety Injection Pump Motors (Unit 1),* 4 kV The motors are located outside of containment in the auxiliary building and are not subject to flood.
The bounding environmental qualification parameters are identified as temperature 1
(90*F) and. gamma radiation (7.43 x los rads).
f The required operating time for these motors is 365 days postaccident.
The environmental qualification documentation indicates that the motors are Lifeline A, Frame No. 509 US, Model ABOP. The motor enclosure is drip proof, weather proof, and self cooled; condensation is prevented by integral heaters.
The reviewer noted that the SI motor has been removed, but there was no docu-mentation on rewinding material. Westinghouse has provided the applicant with a rewinding procedure which prescribes material to be used for a typical motor rewinding. Westinghouse also has specified that the weak-link material is to be of cloth and paper and qualified for 105 - 108 rads exposure.
The standard rewinding procedure states:
" Windings shall have..." thermalastic epoxy "...or equivalent Class B insulation."
The staff's was concerned that the range of 10s. 10s rads did not exactly l
inQicate that the weak-link material is qualified for 7.43 x 105 rads.
The applicant provided the following justification:
" Unit 2 pump motors removed and sent to Con Edison.
Diablo Canyon EQB Trip Report 2-19
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Li In our engineering judgment the radiation qualification of 1 x 10s rads is a realistic and conservative figure based on the fact v
. that all materials used in the rewind are qualified for 5 x 10s rads or greater. The material with the lowest radiation resistance is the Kraft paper (5 x 10s rads), which is not used primarily for.
insulating, but rather for forming and spacing the windings during construction. Therefore, we consider the motor to be conservatively.
qualified for 1 x'.108 rads.
Additional conservatism exist's in our specified environmental value-of 7.43 x 105 rads because this is the total value for 1 year of operation after an accident. Operation of the safety injection pumps following an accident is required only until the reactor coolant system can be depressurized sufficiently to allow the residual heat removal (RHR) system to functioh. 'Both RHR pump motors are also environmentally qualified.
The staff considered the response acceptable and asked the applicant to add the justification to the file.
~
With the above addition, the file is complete for Unit 1.- Qualification documentation for the Unit 2 SI motor remains open; the applicant will add the information to the file when it becomes available.
Item EH-16: Okonite Cable, Type EPR-Meoprene, 5 k'V
~
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This Okonite _5-kV cable is used outside containment in medium-voltage power applications. In areas of harsh environment the cable is installed in conduit, junction boxes, and termination boxes.
The limiting environmental conditions are temperature (300*F), pressure (9.26 psig), relative humidity (100%), and radiation (6.7 x 107 rads total integrated dose). The cables must function under the harsh environment for 1 yr.
Documentation provided in the file includes a component evaluation report, bases for the required parameters, and two Okonite engineering reports.
The l
file is well organized and self contained.
l The staff review of the file shows that the cable was exposed to an environment that was at least as severe as that shown above.
The test ran for only 101 days but was extended by analysis to more than 365 days.
Preaging was not done on i
the sample that was irradiated and LOCA tested. However, another sample, with l
EPR insulation only and no jacket, was preaged before being subjected to a j
similar test for 130 days. The aging analysis indicates a 56.2 yr qualified life.
L
'The applicant considers this cable qualified and subject only to standard
_ ongoing surveillance. The reviewer considers the file complete.
l 1
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Diablo Canyon EQB Trip Report 2-20 l
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q ATTACHMENT 3 7
- s_.
IH FILE LIST Quantity
- F.fle No.
Equipment Type,
- per Unit Status IH-l'
- Rosemount Pressure Transmitter, 12:
. To be replaced by 6/1/82.
Model 1152 Justification for interim i
operation provided.
IH-2 Barton Pressure Transmitter, 17' To be replaced by 6/30/82 Model 764 (Lot 1) with new Barton 764 trans-mitter. Justification for interim operation provided.
IH-3
. Barton Pressure Sensor,
'4 Additional document on
~Model 351
- I testing of oil-filled sensor being provided by W.
Justification for
?
Interim operation provided.
IH-4' Sostman RTD, Models 24~
Additional analyses on 118348-1-(NR)
- )
119018-1 (WR) aging required for narrow i
' range. Wide-range equip-ment to be replaced at the first outage. Justifica-tion for interim operation provided.
IH-5 W Fan Cooler, 5'
Qualified:
40 yrs.
385-5-5 Type CSP e.
Ongoing surveillance for
. aging evaluation provided.
IH-6 ASCO Solenoid Valve 17:
Qualified:
11.4 yrs.
NP831655V Surveillance / replacement NP8316E35V program for elastomers at NP831655E 10 yr intervals and aging NP2084483F evaluation provided.
IH-7A Limotorque SMB Valve Actuator (I/C) 4~
Qualified:
1.5 yrs.
Class H Insulation Surveillance /mainte-SMB-0-040
?
nance program at 18 mo
- SMB-00-40 interval and aging
- SMB-000-40 e
evaluation provided.
IH-7B Limitorque SMB (I/C) 4 Qualified:
1.5 yrs.
How-Class B Insulation ever, will be replaced
' ~
within 1 yr to increase operational flexibility.
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D' ATTACHMENT 3 (Continued)
F v.
~
Quantity File No.
Equipment Type per Unit Status IH-8
. NAMCO EA 180 18 Qualified: 2.45 yr.
Gasket to be replaced at 2 yr interval.
Surveil-1ance/ maintenance program for aging evaluation.
IH-9 Valcor Solenoid Valve 11 Qualified: 57 yr. Surveil-
- V526-5295-36,
lance program provided for aging evaluation.
IH-10 ASCO-Non-NP (I/C) 35 Qualified: 11.4 yrs.
8316, 8321
_ Elastomers will be replaced every 10 yr.
Sur-veillance/ maintenance program provided for aging evaluation.
IH-11 Fisher &' Porter Transmitter, 8
To be replaced by_6/30/82.
Model 1082496 Justification for interim operation provided (to 5
be replaced with Barton--
4 j
764 transmitters).
IH-12 Limitorque Reliance Hotor, 4:
Qualified: 1.5 yr. Aging Model SMC-04 analyses to extend qualified life ongoing.
Surveillance /
maintenance program estab-i lished for aging evaluation.
IH-13
' Fisher & Porter Transmitter, 12 To be replaced by 6/30/82.
Model 50EP1041 Justification for interim operation provided.
j IH-14 ITT General Control Electro -
4' Additional document and Hydraulic Actuator, Model analyses, required for NH92K6002E2L80 120 V ac, 10 capacitor.
Justification for interim operation provided.
Sur-veillance/ maintenance program established for aging evaluation.
IH-15 Target Rock Valve, Model 4
TMI-related device, not 79AB-001 now part of plant.
Qualification document to be provided by 8/1/82.
'u i
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- ATTACHMENT 3 (Continued)
/
File No.
Equipment Type
. Quantity per Unit Status i
IH-16 Limitorque -(Reliance Motor).
33 Qualified:
1.5 yr Surveil-SMB-0, 00, 000, 1, 2 1ance program developed to IH-17 ASCO Non-NP Solenoid Va'Ive
'44 ensure qualifled life.
Exempt from qualification;
'.however, it will not be required to function and-may fail.
FMEA and justi-fication provided.
IH-18 Fisher & Porter Transmitter 12 Functionally exempt.
1082496 Applicant elected to replace with Barton 764 by-6/30/82. FMEA.and justifi-cation for operation provided.
IH-19 Burns RTD l'
Exempt.
FMEA and justification for operation provided.
No safety function /
,s maintaining required.
~IH-20 Hydrogen'Recombiner 2~~
~
TMI related,'wi11 not be in
^
operation until 1/1/82.
Qualification documents to be provided. No justifica-tion required.
IH-21 Technology for Energy Corp.
3 TMI related, qualification Acoustic Monitor documents being developed, 1414 System test to be completed by 9/30/81. Justification provided.
IH-22 Barton Pressure Transmitter, 4
Exempt, may be affected by Model 332 recirculation mode. Used for normal-range contain-ment pressure, will be qualified for mild environ-ment. Wide-range containment pressure to be added by 1/1/82 for postaccident monitoring. Justification for interim operation provided.
Diablo Canyon EQB Trip Report 3-3
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ATTACHMENT 3 (Continued) l
. q,. -
' Quantity File No.
Equipment Type per Unit'. Status IH-23 Barton~ Pressure Transmitter, 4
Qualification documents Model 763 being developed, to be.
added by 1/1/82. Justifi-cation for-interim operation provided.
IH-24 Barton Pressure Transmitter, 4
Qualification documents Model 764-being developed, to be added by 1/1/82. Justifi-cation for interim operation i'
provided.
IH-25
. Hydrogen Monitor
'2 THI-related device will not be in' operation. Qualifi-cation documents being developed, to be added by 1/1/82. Justification for interim operation not
-required.
IH-26 Victoreen Containment Radiation 2
TMI-related device will not Monitor
.be in operation.
Qualifi-cation documents being developed, to be added by 1/1/82. Justification for interim operation not required.
IH-27 Barton Indicating Switch, 2
Not exposed to accident Model 288A temperature and pressure.
l Surveillance / maintenance l
program established for i
aging evaluation at 18-mo interval. Additional analyses ongoing to extend qualified life.
IH-28 Rotork Motor Operator 2
Qualified for radiation, 14NA2 additional aging analyses required.
Surveillance /
maintenance program to be established when aging analyses are completed.
w Diablo Canyon EQB Trip Report 3-4 l
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'N ATTACHMENT 3 EH FILE LIST File No.
Equipment Type
. Quantity per Unit Status EH-1.~ -
GE Penetration, Model-37 ',
Qualified: 40 yr.
NSO-2, 3, 4
, Surveillance program
- developed to ensure qualified life remains valid.
EH-2 Okonite Cable,'EPR/Hypalon N/A Qualified: 40 yr.
- Surveillance program developed to ensure qualified life remains valid.
EH-3 Raychem Cable, Flametrol N/A Qualified: 40 yr.
Surveillance program developed to ensure-qualified life remains valid.
]EH-4
.Rockbestos Cable, Firewall III N/A Qualified: 40 yr.
Surveillance program
'O developed to ensure qualified life remains valid.
EH-5 Boston Cable, Silicone /Hypalon, N/A Qualified: 40 yr.
Models 8993-H-007 (7/C), -005 (5/C)
Surveillance program developed to ensure qualified life remains valid.
EH-6 Okonite Cable, Tefzel N/A Qualified: 40 yr.
Surveillance program developed to ensure qualified life remains valid.
EH-7 ITT Cable, Thermocouple N/A Qualified: 40 yr.
Exane II DAC-02A-AKP Surveillance program developed to ensure qualified life remains valid.
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ATTACHMENT 3 (Continued) k
. Quantity File No.
Equipment Type per Unit Status EH-8 Continental Cable, Silicone N/A Qualified: 40 yr.
Rubber, S/N CC2193 Surveillance program developed to ensure qualified life remains valid.
EH-9 Boston Fan Cooler Cable N/A Qualified: 40 yr.
Surveillance program
~
developed to ensure qualified life remains valid.
EH-10 Raychem Cable, Stilan N/A Qualified: 40 yr.
Surveillance program developed to ensure qualified life remains valid.
EH-11 Raychem Splice, Heat' Shrink, 20,000 Qualified: 40 yr.
Type WCSF-N Surveillance program
,m developed to ensure
(
qualified life remains valid.
EH-12 Conax Conductor Seal, 50 Qualified: 40 yr.
Model N-1101 Surveillance program developed to ensure qualified life remains valid.
EH-13
- 0. Z. Gedney Conductor Seal, 35 Qualified: 40 yr.
l Type CSB1 (Hypalon Seal)
Surveillance program 7
developed to ensure qualified life remains valid.
EH-14 W RHR and Charging Pump Motor 2-RHR Qualified: 40 yr.
2-Charg-Surveillance program ing developed to ensure qualified life remains valid.
EH-15 W SI Pumps Motor (Unit 1), 4kV 2
Motors and motor bearing l
Unit 2 Pump Motor removed and sent lubricant qualified:
to Con Edison.
40 yr. Surveillance program l
developed to ensure quali-L fied life remain valid.
l EH-16
~
Okonite Cable, Type EPR-Heoprene, N/A Qualified: 40 yr.
5 kV Surveillance program developed to ensure qualified life remains valid.
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