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b Sp2cification 7220-C-88(Q), Rev 2 TECHNICAL SPECIFICATION FOR SUBCONTRACT FOR f
AREA DEWATERING SYSTEM j
CONTENTS 1.
SCOPE 1
2.
QUALITY STANDARDS 2
3.
SUBMITTALS 2
4.
SERVICE REQUIREMENTS 3
5.
FIELD OPERATIONS 4
6.
INSPECTION 7
7.
CLEANING AND RESTORATION 9
b 8.
QUALITY ASSURANCE REQUIREMENTS 9
9.
MEASUREMENT FOR PAYMENT 9
APPENDIX A
LOCUMENTATION REQUIREMENTS 8
iii
/g Specification 7220-C-88(Q), Rev 2 j
1.
SCOPE A.
GENERAL 1)
The work to be performed under this Subcontract shall consist of designing a dewatering system capable of lowering the groundwater to a minimum elevation of 580 feet with the pond at el 627'+.
The lowering of the groundwater will allow others to excavate portions of the auxiliary building and feedwater isolation valve pit in a dry condition.
This specification includes Q-listed work to be performed exclusively by Contractor as noted in Article 7.
B.
ITEMS INCLUDED 1)
Design, furnish, install, maintain, operate, and remove dewatering system as indicated in the design drawings.
2)
Provide and maintain standby equipment and power of sufficient capacity to perform the intended work.
3)
Install, maintain, and observe observation wells and/or piezometers and test pits for logging the water table elevations at the locations as required and approved by Contractor.
4)
Dispose of the groundwater to the cooling pond by installing a piping system from.the dewatering system indicated in the drawings to the site storm drain jh system.
l 5)
Provide protection of the dewatering system in areas designated as construction access as shown in the drawings.
6)
Grout placement for all dewatering holes and wells upon completion of the subgrade dewatering.
7)
Install 1/4-inch pefcocks, bushing, and nipples at each dewatering well for obtaining samples of the return water.
6 8)
Provide all reducers, couplings, piping etc necessary to adapt Contractor's flow meters to discharge line, fire hydrant, and recirculation line.
C.
RELATED ITEMS NOT INCLUDED 1
1 1)
Access roads to the area j
2)
Inspecting the water being pumped to determine the
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amount of fines being removed._ In this
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specification, fines are defined as any nonorganic bh materials coarser than 0.005 millimeter.
l 1
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Specification 7220-C-88(Q), Rav 2 ah, t
3)
Concrete grout for sealing holes and wells T
4)
Excavation required (trenching) to provide the areas for installing the dewatering systems 5)
Location of all utilities, embedded plant facilities, and other subsurface structures at the location of the dewatering system 6)
Drilling holes through the turbine building and auxiliary building concrete floors at elevations 614' and 634' at the locations required by subcontractor 7)
Repairing the holes drilled in the auxiliary building and turbine building concrete floors I
8)
Electrical power to operate the pumps 9)
All lines, grade, survey, excavation, fill, backfill, and protection of dewatering equipment at the road or ramp crossing as necessary i
- 10) Repair and/or replacement of any utilities, embedded plant facilities, and/or other substructure damage encountered at the locations indicated by Contractor for locating eductor wells 2.
QUALITY STANDARDS A.
GENERAL 1)
Subcontractor shall be responsible for the quality of items and services to meet the requirements of this specification, applicable codes and standards, and other contract documents.
3.
SUBMITTALS j
A.
STANDARD FORMS i
1)
Engineering document and quality verification document requirements are summarized in Form G-321-D and are augmented by detailed requirements in this i-specification.
B.
PROCEDURES Subcontractor.shall submit the following procedures (in detail) to the satisfaction of Contractor.
1 1)
Dewatering plant area procedure 2)
Test pits procedure 2
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Specification 7220-C-88(Q), Rav 2
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Observation wells 4)
Jetting procedure f
5)
Grouting procedure 4.
SERVICE REQUIREMENTS
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l A.
OPERATIONAL REQUIREMENTS 1)
An adequate dewatering system shall be installed to lower and control the groundwater to provide a dry condition during construction, excavation, and placement of fill materials.
The dewatering system shall be capable of lowering and continuously maintaining the groundwater level to el 600' initially so construction work can start and then lowering and maintaining the groundwater level as directed by Contractor to a minimum elevation of 580' until a written directive from Contractor to cease dewatering operations has been received.
2)
Deleted 3)
Contractor.shall provide operating electrical power.
The drawing will indicate these locations.
B.
SUBCONTRACTOR'S RESPONSIBILITY 1)
Subcontractor shall be solely responsible for the design, installation, operation, and removal of a 1
dewatering system.
This system shall prevent the loss of fines in the soil, seepage, boils, quick conditions, or softening of the foundation strata.
The stability of sides and bottom'of excavation shall be maintained, thereby resulting in every phase of the excavation and construction being performed in dry conditions.
C.
DATA AVAILABLE 1)
The subsurface data and preliminary pump test results are available upon request and are for Subcontractor's information only.
Subcontractor assumes the responsibility for any deductions, interpretations, or conclusions made on the basis of these data.
2)
The test boring report and the Dames and Moore Report for this plant are locatcd at Contractor's office and i
are available for review.
3)
The estimated elevation of the groundwater table is 627 feet.
3 1
Specification 7220-C-88(Q), Rsv 2
/A L2-T D.
APPROVAL OF DEWATERING SYSTEM 1)
Approval by Contractor of the dewatering system proposed by Subcontractor will be only with respect to the basic methods Subcontractor intends to use.
Approval of the dewatering system will be based on the demonstrated performance of the system to satisfy the requirements for dewatering as specified.
E.
CONTROL 1)
The observation wells, piezometers, and measurements of fines shall be used as a primary basis of
- $g determining compliance with the requirements of this specification.
2)
Test pits shall be used only as directed by contractor in writing.
5.
FIELD OPERATIONS A.
GENERAL 1)
Subcontractor shall furnish, install, operate, and maintain the dewatering system and, upon completion, remove all dewatering equipment except as approved in writing in advance by Contractor.
Subcontractor shall perform all associated work required to remove and control the subsurface water so that the excavation, construction, and backfilling operations can be performed completely in dry conditions as approved by Contractor.
All associated work required to remove and control localized pockets of trapped
/[g groundwater within the excavation will be done by others.
B.
TRENCHING 1)
Contractor shall perform excavation where required to allow for installation of the dewatering system.
C.
TESTING DEWATERING SYSTEM 1)
Prior to any excavation below the groundwater level, the dewatering system shall be tested and placed in operation to lower the water levels as required and shall function continuously as required to provide a dry construction area.
The pumping shall continue until the excavation and backfill operations are completed to the upper limits of the original i
groundwater level.
Subcontractor shall obtain written approval from Contractor before discontinuing the dewatering operation.
4
Specification 7220-C-88(Q), Rev 2 g
D.
DISPOSAL OF WATER 1)
Subcontractor shall be responsible for all surface 1
and subsurface water resulting from its operations and shall dispose of all water removed from the dewatering system in a manner that will not endanger public health, property, or any portion of the work under construction by other Subcontractors and associates working in the area.
The water shall be conveyed through piping from the dewatering system to the existing site storm drain system only after it jpg has been monitored for fines.
E.
STANDBY EQUIPMENT 1)
Subcontractor shall provide standby equipment installed and available for immediate operation as may be required to maintain the dewatering adequately on a continuous basis in the event that all or any part of the dewatering system may become inadequate or fail.
2)
Subcontractor shall provide and maintain, in an i
operable condition, standby diesel-powered pumps and/or generators of sufficient capacity to start and operate all pumps and other required dewatering equipment for the duration of the dewatering.
F.
OBSERVATION WELLS 1)
Subcontractor shall supply, install, take measurements, and maintain the required number of observation wells and/or piezometers and such additional observation wells as may be ordered by Contractor.
Water levels in the observation wells and/or piezometers and volume of water shall be recorded and submitted to Contractor daily, Monday through Friday, during dewatering.
2)
The observation wells shall be of a type that will permit portions of the riser to be removed as the excavation work progresses.
The proposed type shall be submitted to Contractor for approval prior to installation.
- 3). Subcontractor shall, by adding or removing water from all observation well risers, demonstrate that the observation wells are functioning properly prior to commer. cement of. dewatering.
4)
Any observation wells and/or piezometers that become inactive, damaged, or destroyed by Subcontractor shall be replaced within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by Subcontractor at i
l no additional expense to Contractor.
1 5
1 l
Spscification 7220-C-88(Q), Rev2 fh 9
5)
Jetting shall not be used for the installation of the observation wells / dewatering wells under any structure.
Controlled jetting may be used for the installation of the observation wells / dewatering wells outside the structures, provided the jet water is brought up through the inside of the jetted casing and does not blow up the outside of the jetted casing.
The above is applicable after the casing has been installed 10 feet below the ground surface.
Jetting shall be done in accordance with the
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Subcontractor's approved procedure.
I-G.
DEWATERING 1)
Subcontractor shall be solely responsible for the arrangement, location, and depths of the dewatering system necessary to accomplish the work described under this section of the specification.
Limits of the work are shown in the drawing.
The dewatering shall be accomplished in a manner that will reduce the hydrostatic head in water-bearing strata below any excavation to the extent that the water level and piezometric water levels in the construction area are substantially (a minimum of 3 feet) below the prevailing excavation surface; will prevent the loss of fines, seepage, boils, quick conditions, or softening of the foundation strata; will maintain stability of the sides and bottom of the excavation; and will result in all construction operations being performed in a dry condition.
For the area outside of the structures where pervious soil strata overlay considerably less pervious soil strata above the subgrade level, the groundwater in the pervious strr.ta shall be lowered to within less than 2 feet of.
the top of the less pervious strata.
As the area is excavated to the top of the less pervious strata, any groundwater remaining perched in the pervious strata above the less pervious strata shall be removed by others.
If the water bearing strata are found to be absent, the well location shall be abandoned and the jhg hole shall be sealed in accordance with Paragraph 5.G.7 of this specification.
2)
The dewatering operation shall be controlled in such a manner that the amount of fines of the soil' in the discharge water shall be limited.to 5 ppa.
This is to be determined by measuring the amount of fines in the return line and discharge line corresponding to gg
. the quantity of groundwater measured at the discharge line.
a)
All dewatering and. observation walls located.
within the turbine building shall be installed A
using stainless steel well screen and risers.
i Unless directed otherwise in writing by the onsite geotechnical-engineer.
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Specification 7220-C-88(Q), Rev 2 26 V
b)
Dewatering wells located outside the turbine building area may be installed with a 6-inch diameter well screen, provided there is a
/bg sufficient quantity of sand and approval is obtained from the Contractor's onsite field geotechnical engineer.
3)
Jetting procedures shall be approved in advance in fbs writing by Contractor and as indicated in j
Subparagraph 5.F.5 of this specification.
4)
If the dewatering requirements are not satisfied 1
because of inadequacy or failure of the dewatering system, loosening of the foundation strata and/or i
instability of the slopes may occur.
The supply of all labor, materials, and the performance of all work necessary to carry out additional work for reinstatement of foundation soil resulting from such inadequacy or failure shall be undertaken by Subcontractor to the full satisfaction of Contractor, and at no additional expense to Contractor.
5)
Prior to any excavation below the groundwater level, the dewatering system shall be placed into operation to lower the water levels as required and then shall be operated continuously 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day, 7 days a week until construction and placement of the subgrade structure and backfill has been satisfactorily completed and no longer requires dewatering, as s
notified by Contractor in written form.
I 6)
Subcontractor shall obtain written approval from Contractor before discontinuing the operation of the dewatering system.
7)
Subcontractor shall seal, with 2,000 psi minimum concrete grout, any dewatering equipment buried or left in place under the structure and all observation wells, test pits, and holes after the dewatering operation is discontinued in accordance with the latest Michigan wells Act.
6.
INSPECTION A.
CONTRACTOR 1)
Contractor shall inspect the effluent of the well points to determine the amount of material (fines) being removed by the dewatering operation.
This l
monitoring is Q-listed and shall be in accordance with 10 CFR 50, Appendix B.
2)
The dewatering system shall be accepted by Contractor based on the difference in quantity of fines measured l
in the return line and discharge line and correlated I
with the quantity of groundwater being discharged l
7 l
specification 7220-C-88(Q), Rev 2
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Y through a water meter calibrated in gallons.
The average quantity of fines shall not exceed the ratio of 5 ppm.
The average quantity of fines shall be determined by testing a sample of water from the return line and the discharge line every Monday and Thursday that the pumping is in operation using a 1-liter Buchner funnel.
The filter paper shall not be coarser than 0.005 millimeters.
The corresponding number of gallons of groundwater pumped through an In-Line flowmeter located on the discharge line shall also be recorded by Contractor and the average pp.m calculated.
Contractor shall also monitor the number of gallons of recirculating water in Subcontractors eductor system.
Contractor shall supply the 1-liter i
l Buchner funnel and filter paper (no coarser than l
0.005 millimeters) for the testing, and three flowmeters; one on the recirculation water line i
i (10-inch Sparling In-Line with totalizer, Saddle Mount Series FM112) one on the discharge line (6-inch z$s i
Sparling In-Line with totalizer Saddle Mount Series FM112) and one on the hydrant (3-inch Sparling In-Line with totalizer Series 162).
If an individual test indicates the fines are greater than 5 ppm but the average ratio of fines to ground water pumped is less than 5 ppm, Subcontractor shall be alerted.
If the quantity of fines exceeds the average ratio of 5 ppm for the total quantity of groundwater pumped, Subcontractor shall be notified that it has 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to correct the condition.
If, after 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, Subcontractor has not been able to correct the problem, Contractor shall begin a systematic testing of each individual dewatering well.
Any dewatering wells found to produce greater than 5 ppa of fines shall be repaired by Subcontractor or removed from the system.
Subcontractor shall notify Contractor whenever it intends to purge any collected fines from the eductor tank.
Subcontractor will estimate the quantity of water purged, and Contractor will collect all material from subcontractor's eductor tank.
The discharged bottom material shall be sieved through a Number 325 U.S. standard screen.
The collected material shall be retained and stored for inspection by the onsite field geotechnical engineer.
3)
Each individual well shall be inspected by Contractor during installation in accordance with the following criteria.
After the initial 15 minutes of pumping, the effluent shall be tested for fines using a ghs 1-liter Buchner funnel.
a)
If the fines observed are 10 ppa or less, the p
well shall be accepted.
b)
If the fines observed exceed 100 ppa, the well chall be rejected and pumping stopped.
c)
If the fines observed are less than 100 ppm, but more than 10 ppm, the pumping shall stop.
The d
well may be ratested in accordance with the above i
8 l
l L
Specification 7220-C-88(Q), Rev 2 u
criteria after a minimum of a 1-hour delay.
If the well has not met the acceptance criteria for fines within three retests, the well shall be rejected and pumping stopped.
4)
Records shall be maintained for each well and for the entire system, including the amount of fines (ppm) d, each time readings are taken.
B.
SUBCONTRACTOR 1)
Subcontractor shall perform all inspection and recording of the piezometers/ observation wells in accordance with its approved procedure.
All other inspection shall be in accordance with Subcontractor's approved procedures.
7.
CLEANING AND RESTORATION A.
Subcontractor shall leave the work area in the same condition as prior to the start of operation and to the satisfaction of Contractor.
8.
QUALITY ASSURANCE REQUIREMENTS A.
The monitoring of the fines of the soil in the discharge water is Q-listed and shall be performed and controlled by Contractor's quality assurance program.
B.
Contractor has the authority to stop or regulate any part of the dewatering operation to prevent damage to any part of Contractor's work.
9.
MEASUREMENT FOR PAYMENT A.
BASIS OF MEASUREMENT 1)
The measurement of payment shall be in accordance d
with the terms of the subcontract.
4 I
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9
Specification 7220-C-88(Q), Rev. 0 APPENDIX A DOCLHENTATION REQUIREMENTS 1.0 The Subconttactor shall furnish documentation in accordance with the specification as suscarized and directed by form G-321-D.
To complete form G-321-D, the Subcontractor shall check in column 8 which documents are being trans-mitted, and shall sign line 21.
The Subcontractor shall fill in lines 13 through 20 as applicable. Entries such as N/A (not applicable) and "See attached sheets" are permissible. The completed G-321-D form is then used for a cover sheet as directed on the back of the form.
Attachments:
Form G-321-D, Engineering and Quality Verification Document 1.
Requirements n
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Issas ne anyv. Fe smopasse aus eney.
mamme presse a wereas tee, of was campasand term and she 9
sethus tamposene to com dser some rense. Ses es twa 22.
upewing Gumi Venfew*a Demunenet I
19 fever Rwaves Eagsamenre teams senerensre. Son en has 23.
Is.1s.19 E niw ensonnenes as reassed.
20 Emer sesaastuewn asneertal tramatie to me emitd Inne re l
11 Sechte OCE se comesse emernmL sga en hae 24 l
3 Enter remeras a spreersen.
Immed. e4 auntene, haut no. of maser temeenset. caste ress oe.
er sour casus umpmeer et 00CUWENT CATEGORY hum 0ERS. Enyassems El sad Gushev vedsamen M Oa==-4 Reemsumene a amend a Colume 1. and dehand a 4,1214W A Desammer Comewy safseesar. For esemes, se spoofuenen parayeesdal reewesred a Ceamme 2.
tA ORAWINGS (El 14J TypsalIsammelund NA RT - RA010GRAP>nt EIAlsenATiot 1.1 Seehne Dumamen. Sarium and Faus.
ItA IsATERI AL DESCRIPT10m (El pg0CEDUMS (El. A40 VER:FICATIOR dessen/Ilemene Desmie l1A WELO64G Pfl0CEDUMS AND QUALIFO REPORT 5 M IJ Asummes, Oromuga CATI 0els (El. Ae9 vtRIFICATION RE-23 3 IIT - IBAGNETIC PAPTICLE ExAlsinA.
tJ Sher Omed Orausgs PO RT5 (V)
T1001 PROCEDURES El. AJIO VERIFICA-i f
f4 m Deersne 13A WELD R00 CONTROL PIIOCEDURES (El.
7104 REPORT 5 M 1l Ceneruf Lega Demyums ANO VERtFICATION HPORTS M 21A PT - LICWD PEleETRastf EXAIBiNA-IA P & 10e 14A AEPAsh PROCEDURES lEl. ANO MAJOR Tion PROCEDURES El. ANO VERIFICA-1J PARTS LET ANO COST (El REPAls VERIFICAT10N REPORTE M
' TION REPORT 3 M 3A COIIPLET10 sECNTEL DATA SMEETS (El 118 CLEAineG Ane COATies PROCEDURES 21A E00Y CURMWT EMAINEAT10s PROCE.
4A In57RUCT10mg(E)
El. Am0 VERIFICATI0II REMRTS M OURES (El. ANO VERIFICATION RE-4.1 Esentsanomadhees 18A teEAT TREAtufWT PROCEDURES (El.
PgBTE M 42 Osensus AIIS WENsFICATIGII flEMRTS M 3eA pegguRE ftST - 8tVOR0. A8R. LEAK.
- gg g,p,,,,,,
g;A CERTIFiEO BATERsAL PROPERTY M.
BUSSLE OR VACUUM TEST PROCEOURE 44 See Susses and seamano PORT 5 M El. Age VEReflCATies REPORTS (V)
M EIItSutES. ESS8hEERIWG Amo FAS.
17.1 IrTR EenIRue M Ten Ruperal gA gWECTIon PROCEDURE (El. Ane VER-RICAT100WEllECT10ns) til Imesse Tes tum esICAftSu REPORT 5 M SA OMAlffY AMURANCE MANU4UPROCE 17J Pseum One 3A PERFORIBAleCE 785T PROCEDURES (El.
OUSES El 17.4 IIssues CardRum of Camseleme ANO VERIFICATION REPORTS M PA SEIIIIst BATA REPORT El 17.5 EtssumiPnsany m ere 3gt guRommitans m
SA AAALYSIE ANO 003864 REPORT El 15A CODE CGIIPLIAACE M 332 gisseuseTess SA AC005flC SATA REPORT El ISA UT - ULTRASOINC EIABIGAY10Il PRO-27A PROTOTYPE TEST REPORT (E 8 VI tea SAIIPLES El CEDUREE El. AGE VEhlFICAT1011 RE-34 gupptEn gespruss PupARAtl0m PRO-Itt TteameSmassy WsIRummen Baemumme PORTS M CEOURE fEl Specification 7220-C-88(Q)
Appendix A Page 2 of 4
Specification 7220-C-8$)
Appendix A Page 3 of 4 DOCUMENT CATEGORY DEFINITIONS lEl-Enyneweg Docu mentt 1tus arm conenen procedwes dressay, sesafices ora. QA pies, prototype esiihcoton est reporn, and other seder documans shot roeiste 8echtel appeoval pner to Ishncomen, or pner to use of the datument in the demon, f ahncesien. metaileoon, or seer wark preest The term rs also applied to pnce lists esd isotruceensi documens f or handin6 storess, mantenance att, that ese of informational interut end, to prasct anonconag M - Osserfy venication Deaimentt The term compress meesruf test reports, bei tremament chara. weidag records, NDE remets, partormance test reports, etc.,
sesch domesstrate et carnfy confermance to the sachacal er er.epsction reewrements of the procurement hmtt IA D R AWIN GS (El
- Servces and Foundet at ueunting Details - Orominy preadme esteresi emeiope, including fuss, conter fine (sl. locanon and are t
Outline Dt 1.1 for electreal tshie, condet, fluid, and other surwca connschens,isonstncs, and dotmas reinsed to foundeters and mountmgs.
Amen 61, De=np - Detened drome,indicssues suficent informones as feeditete ansehty of me component parts of en agu pment item.
1.2 Shop Dent Desunnes - Dresangs me>ich prende suffeuent detal to feedstets the fehncenen er manufacture of the esegment item. The mclud 1.3
.soimited to. spos..e.m.s. h., esch.ngs, mie,nsi - isne,asi,eme e,d wi,me. cre..ct.n d. mis and e,ceirisciuru de.u -
1 genne Dayams - Dream, whch show the schemete anne and ceansceen informeteen for siertncer reset 1.4 1.5 Centrol Lage Deyems - Drawn, whch show the sait's whch meet spists must fedow to accompf sh me reeweed rueensus.
1.6 P & 10s - Pipeg and inseremettenen Dayams whch dow peng 3, sum dasds and me home consraf elementt PA RTS LIST AND CDST (El - Esploded one wah idenefed pws and recommended spore para for one year s operonen wem urus cost 20 COMPLETED BECHTEL DATA SHEETS (El-Intermission prended by e suppher en ese sheets learnished by Sec'itsiinhech seses surel numbers. op 3A ranges. est., et esisemens that the suppose stends le deiner le Stiely the sesDicalen rWinsrementL 4A 18tSTRUCTIDNS (El 4.1 Erection /Inesuomen - Deeded wrwoon precedures, marucners, and drosangs reeuwed to ernt er mstes seenrisi er ogwpment.
4.2 Operating - Deeded enteen eseruceens dementing noe an inom er sysse should to sparseed 4.3 Meinenonce - Desded sentten instrucnens reeuwed to disassemble.ressentes eswl eneintain sassns er syssoms in an operating condition.
Site Stormy sad Hond6me - Detated uretes instruchons which deeme ttee reswrements and tune pened for lubncation, reteten, heetme, hfang or 4
4.4 other handhng reguvements to present damage we essenersten ownns senregs one handleses at phate. The induces return snipping erstrucconL 5A SCHEDULES: ENGINEERING AND F ABRICATION! ERECTION (El-Sur chsra,cntcal pom memods, etc..which J.
. --7 dead the isovence of actetet 50 QUALITY ASSUR ANCE MANUAL / PROCEDURES (El - The docurnent(d whch descresist ttee pesaned and systematic measures that are used to e&= that structwes. sysems, end comronents adi mort the regurements of the proairement #'acumentt LD SEISMIC O ATA REPORT (El-The anstvocal er out den shch prendes physcal repense aformet on on an imm, mesarmi, component or sysum in ressuen te the conditions unpased by the stated smanne cniera 8.0 ANALYS$ AND DESIGN REPORT (El-The anseytral dem. (sans, sistincas tesdme. fluid dynemes. set), whidt asawes that en item set:sfies specified regenrementt LD AC0USTIC DATA REPORT (El -The nous, smend sad eeer abranen does roomrod by sperdicenen which e in me asette range end shove me semic trotsency l
1(Le SAMPLES (El 1(LI A represenistmo data packass which ena he submiensil tur the items perchsend as roeused a the speOficaten.
10.2 A represennettve enample of the maierial to be used.
MATERIAL DESCRIPT10ft (El-The technical date dear 4 ng a meisel abch a supplier propens to ese for e specific order. The usually apples to IIA esimesctural seeint e.g.meest sident estbag. doors, pants,costuigt i
IIA tWELOllfG PROCEDURES AND QUAttFICATIONS (El Amo VERiflCATION REPORTS (V)-The meidme preendure speatsenen and esoportuig weseng precedure enhficmien test records regemed les nesses. hard Isang, suertsy.brarme and asidereg. A ounliconen report of maids performed I
estness Ao stunnhession of the esserted nederts), esd the precedure(s) essd, sad Earkhesnen test the suusstsj unre gesfefied, 13A lutLD R00 C0elTORL PROCEDURES (El. Amo VERIFICATION REPOItTS M - The presseures ter centrasteg immasce homeme, storsse sad ereceshdety. Venhcaneen report (s) ter used red me dehnsd as carnhed meesrei aust reports omsch mehsde the :n _ __ defened by she code and mesnel sesahteenen eingesed by to procuremmet docunuset 14A REPAIR PROCEDURES (El. AND MAJOR REPAlR VERIFICATION REPORTS (V)-The precedures for centroning meerial remesel sad repfacement by assent bensues sec, ashusement mannd mustmass, and fuisi accupanse mWacaen. Venhsomen repera sney menuds used resser locanons (massi, masenal suit superu ter haier meal, preendoestassed hans aussement records. N0E secases, sec. De nestenen of usioener e reper is esser er not is a eschist 8eWessuhdWy G-321-SUP A ED 4 REV 10 74)
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Ph,e 4"n1.'.
Sp' cifiiation 7.220-C-88Q
' i e
I N
4 15 0 CttArit;:C Aufi f 'aATNfm m e nist:'gf ANu VI liil II. AltnP: Tit Pult15 (V)
Ti. pem. twes im n me. I..I die t, mn.e i.e em sms.
ia '"..is. se, ne eneem, ve.d n.a r. rpm n.= hole. cit.f. e.m I wr.ual e., aim. tam fue sm t..r e ini p.n o...
we i. e centan.matm n I N*h *pr s
profde, cuhwe' ' b. 'mmehMil.lr*'ea1 ume Ma *=t U.'~~ % W dda e* u ant hv ti e M=* =rmeae doom mit
-r IE0 ME AT 1rttI.fl.J N( PROCl fHuit s til. A41s VLit411.AatUs itCPUlti.t M The preek.eas In rimarustum *cmprrature. time as t ieper rer, as a funct,oa of thakiiru. fu nze emnwin ee, cm.h ut roer.md m on et etc vssihc imn repum ninmd, p.r.tude lenxe charts o, umet ereun:s whu a, menpi, e
and certify the ucmisl tecee.. the pnu rnuer i.se d, furnate atmophne. tems at temperature, cuchng ' ate, etc. Vent. capon ma ma t.e m esti.er carrauwe ce taoular sof m 170 CERTIFIED UATCHIAL PRefEblY REPORTS (V) s,
x 17.1 MTR (Certifad Materuf Test Repurn) - Thets repnns include all chemicar. phyncal, enechamcal and electncal property test d;.ta team ert ti, t'e matenal sp.'cac tion amt oppter41.ar cudes I'm a =>,pbcable to cenirn'. corscrete, stymis, cable pchet materia's. rel,ar, tebar sphces, etc. The certit ad MTS shall include a statenient sif c8wdor menetjut the maternal mccri the specification fitlunesnents.
17.2 Impact Test DAa -liesults of aA Chny or drop weiyto tr,ts mcirimg specinien c(afiguianon, test temperature and tracture data.
17.3 Ferme Deia - Report ol the lernie perce inee* f or stainless stee8 <catenals used. including castmas & welding fdier metals as deposted.
17.4 Mater.4 Certificate of Cunyhence : Venisano, document.Ac't certifms conformance to $e irquaements of the appicable matenal specificaban 17.5 Elecincal Pn.perty'Rernees - Aepoei f e'mor d clue.ueen>=1.e s$ dichsinr, mapedmice eesnesare. fie ilese, corona. etc.
n ILO C00 E COMPLiANCF tv) - Vw. frei dut=.e-ts (mch.: data Furi e U 1, f4 2, Siate.ete.l.whalt me piepaaed by the manufactmer or mstalice aint rerhhed by the Authensed Code lascertm.
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13 0 UT - ULTRA';0NIC DAMi*iATiON PROC [DURES (
AUD VE RIFfCAtl0N P.EPORTS (V) - Ites. sod of detect on and enammation results of prest'sce and certam characwessics at (incontmmhes.wd mctunons a( *ateruls by the use o; hegh freituency,acouste energy.
20 0 RT - RA0 GRAPHIC EXArtNATION PROCF0urES (El, Afs" VEFif1 CAT 10N PEPORT3 Myf.tethod of detection and enemmit.on results of presence ond certam cPersclerruits of desconham.Fts sed mclumon. m outeruls by a say or gamma tai e pcsure of phorngraoh.c idm.
x 21 0 MT - f1 AGNITIC PARTICl[ F A AMWAT10N P90C[PURf t([) AND VE RIFICAll0N fitPORTS IVI-Mediud of recrection and enammaten residni t surf ace (or nee smisct! descswihieu hes a awriet4 ma@h by de.sa haie el en app' ed sugartic fn4d.
22 C PT - L10Ur0 f ENETR ANT ENAutN ATahN PROCEDURLs (t). ANU VERIFICATION REPOMs (V) 5.'je hod et tetectrun and enemmanon results of i
surface des *5.aenes e mamials by apph.auen 61 a pencs sten bquni m contmo
-atti sustahic devctupeag ' echmques.,
f i
23 0 (D0Y trURrMNT EYAMINATION PROCICUltf5 (E),'sif@ VtMICATION REPORTS M -Method for Mtion and examma*.on results of disconhmuss in matenel by d snenun el a.i appt't!iisceuu haif.et e field. ' -
s 24 0 P5ESSUf E ir$f - H 0R0, AIR, LE AK.f*Wist [ OR VAC;Hi" TLST Pit 0C[ DURE ([1, AND VIDirlf:tfluW RCPORTS fVI - Uct%f foi cuah atag the strutt.rel stut nanapsal adetoucy os me.-firy ley applictiet,4 c s sitienenhal piesaures, amt acpori of ine test tendts.
25 0 INSPEC?l0N PROC (0URE (El. AND VERlTICATit'.l 3EP0':TS"(VI-Orgameed process fottened for the purpose of determming that specified requwetheats (dimennons. properhes. perforniance reania et: 6 M rwr. Documented find gs resuihng from an ins;scuon are mcluded in the venficat.on repers.
w
.,, m PERFORIA ANCf TEM FROCEDURES t[lN".ults.tu VER6 MAT 10td REf D ATS M - Tesis perfortned to demonstrata that fuactio 26 0 parameters de airi ope regnet of the est er s,
26.1 thchanstal tem e 3.', pump cmets, rJve steekes,ivaJ, r.mpeinture er cahbrauen, erratenmentad, etc.
N t
26.2 tiectnrat Tests, e.g., load. imposse, e citund, conimmty, velt ave, te warat ure nie. cahhretion, natu.ausic. tess, etc.
,7 -
N 27 0 Pfl0TOTYPF T[ST RFPORT (f. & VI Ripon of a est whuh n pert.wwhi an a standa d nr typic.J eump6r af rin.eement, nutand e4 et.ei..ind n nut sequered int cadt tsem productif in sedei !2 inab:,t tha*.ve the arsept hJeiy of erp'il sterns. Ibn nuemaffy enctshtu ents wtAh may, or emdd be c.pe,f d ta.
tesult m dame pe to the stem (s) tested.
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s 20 0 SUPPLif R SHIPPINO PREPARATON PHDCI bUf I it ' The refntdure nsed by a supplere lo garpast femse.cJ matiuJs or est eirment fin shi, ment
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PROBLEM:
"UNCOMPACTED BACKFILL" Plant Area-does not Include Dikes O
IS IS NOT DISTINCTION CHANGES j
D/G Bldg.
Power Block Recent Plant Use of both C-210, C-211 Area Fill Prior - used only C-210 X-Former Pads Evaporator Not part of Dike / Sand & clay vx clay alone Bldg North Plant Area Fill Condensate Cooling Tower Fill placed dur-Two contractors - Bechtel &
Tanks ing dif ferent Canonie W
time periods M
A Radwaste Bldg
- Steam Tunnel Last ares to be Bechtel used C-211 T
backfilled
?
Tank Farm
- Service **
Settlements seem Large equipment to large &
Water to occur in small equipment spread type footings
- Not as signi-Circulating Excavation /Re-Use of ramps / temporary fill ficant or wide Water excavations (sig-spread as other nificant areas areas
- Problem exists with Guard House sands around structure but not under Occurred Prior co Slowdown of 75 Specification interpretatiottu After 1975 1975 with personnel by didfferent individuals changes Lat'e in jo less deletion of 4" lift requirement emphasis on civil work W
Cooling Pond Urgent need to see work com-H Filled pleted E
N Sand / structural fill used 7
together with clays
/
Qualification of personnel 1
may have changed Differing weather conditions Rebar proolens occurred a
f PROBLEM: "UNCOMPACTED BACKTILL" Limited to Plant Area - does not Include Dikes 1
IS IS NOT DISTINCTION CHANCES Plant Area Plant Area Sand incorporated Sand / clay interfaces - softing Fill AFter Fill prior in fill of clays due to watering 1975 to 1975 E
X elev 612' &
Below elev smaller areas of 1.arger lift thickness for T
sbove 612' fill equipment and harder to E
/
control lif t thickness N
T Most signifi'-
Most extensive Introduction of smaller
?
cant problem exanination; equipment area south &
re-e::cavations southeast of Turb Bldg
'Clacial till Requirc handling &
Undisturhe.1 Placeuen by Equip-men':
Clays - N/W Plant More mixing & material Backfill
~ N-2tural W
.(clay)
' sands-dike
-interfacing s
H (sands) sand / clay rest of, E
= area,
R'
~ ~,
E Backfill Area exposed the More vinters
?
Cor.erete lon' gest during construction
~
North /W st
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11 ant Fill.
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I Pessible Ceusas Test Yes No
?
Ccuse I
Use of different X
Problem is only associated with areas Specification which used Spec C-211 Recent Work X
l Not Part of Dike / Plant A
(N/W) Area Placement of Fill during X
Different personnel different different periods equipment Last Areas to be X
Schedule pressures Backfilled Occurs on spread FIGS X
Design may be deficient Excavations X
Most significant problem in area wheri Re-Excavation most excavation /re-excavation occurret 9
Introduction of C-211 X
Differing requirements / people /
interpretations Different Materials X
Differing methods for compaction -
addition of water to sands Use of small equipment X
Not able to compact as effectively (n.
test pads for small equipment qualifi-cations) 75 Slow Down X
Changes in personnel and discontinuin; of work 4
Filled Cooling Pond X
Designed to be in saturated condition )
L:ss emphasis on civil work X
Less supervision and inspection
+
Specification intrepretation X
Relates to personnel Larger lifts per spec.
I coupled with reall equipment
Tast Yes No
?
Cause Schedule pressures X
Complete work hastily l
Personnel qualifications X
No soils engineer on site 1
i Smaller fill areas X
Relates to equipment and lifts More Freeze-thaw cycles X
These areas filled during several winters W2ather (dry or wet) also when material was placed X
R moval of temporary ramps and fill X
Uncompacted materials placed and left in large amounts Rebar Problem occurred X
Deals - priorities for inspection /
extent of inspection
+Oe e
1
+
Mr.
ACTION PLAN 1.
Define problem areas better by boring logs and TOPO's (PMO - work on this).
2.
Define problems by elevations (use aoring logs) (PMO - QA later).
3.
Define difference between C-211 and C-210 (QA).
4.
Define what work was done by Bechtel and Canonie (PMO).
5.
Define where trenches were made (excavations) (photos, TOPO's, etc) (PMO - QA).
6.
List all equipment used by a) Bechtel
)
b) Canonie (photos, rental sheets).
7.
Look at changes in personnel / qualifications (QA, PMO).
8.
Look at assignments of supervision to earthwork by period.
9.
Look at telecons/FCR's to spec, DR's (QA).
10.
Look at specs and also photos.
11.
Look at rate fill in areas ';.ere there was problems (M40).
12.
Check problem areas with :ompletion o'f the year's work (freeze - thaw) do with 4.
13.
Look at number of QC people assigned to soils, their time involved with soils (IR's, FE Reports).
14.
Ramps - Check photos, TOPO's, crepare with borings (also gravelly areas in borings)
(can do in conjunction with 12, 4) (QA, PMO).
15.
Review weather date for periods of problems (PMO).
a 0
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"INSUFHCEOTLV 0@mFUETES BACC.0F211"
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.5 Distinctions iChanges.:
6.V
- WHAT..,
. DG Bldg Pond : Dikes SpeclAcceptance f
.iRelianc.e on1 Testing
~
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Admin Bldg Plant Area Oikes Criteria
/
' Y..'.. Transf FND inci Evap Bfdg D.iff Material.-
ilntr.od,ucediStruct iBac.kfill. c '1.1l Cond Tank Area Cooling Tower 7-f g
f
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.-. Diesel Tanks Radwaste Bldg i.
3...
Tank Farm Area c-Pipe Tunnel 7."
j %.
!.y'J WHERE,. Plant Fill Area Glacial Till
. Smaller Areas
$ mall' Equipment.
h..i
- (Undisturbed)
Temporary Fill
- Nonuniform P;
Insitu Natural,
.s Ramps Compaction c
r-
- t.,;.
. c.- y
. Sand
-Q-l.isted Proc.ess Differen't' Con ~ tractors
. ~.
~
- L e...
.,.. (Inspection) -
Test Fre,qu' ncy
. Backfill under e
Powerblock
~
N&W Plant Dikes' 4
Pond Dikes
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(r) Undisturbed Plant " ~
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Fill (? Cond Tank' -
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Preliminary 2115!M
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POSSIBLE C&dSES -
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- . Test
- ^
iCa.use SPEC (HCATION IA.CCEPTANCE CRITERI A.
' No '.
iUsed.All over; Site..
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.IESRNG
'. l V. iQue.sti.onabl.e,.underIReview, f0heckiRM,,
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0IFFERENTMATERIAL 4.0
' ? ' UnderiReview, Sel.atds toiProctors e-s x
STRUCTURA1. BACKFILL
-?
No UsediAll. oyer! Site
'.E
'RCEXCAVAIES.AND REFillfD AREA ^' M k. S l "C d'
"b' iProcedures and Centrols)
.' Investigate Photos, :ProcedurespCont(ols SMAtLER A'REAS
' No ? Ni.%
t a u. t r. " ""N. Y' p. -
Iud.'
e cco' h.,, ', :
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NONUNIFORM COMPACTION
~..
~ Subcategory of Reexcava'ted 4rea 7s et i h ofM
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'SMAtLIEQU'1:PMENTRarge IJfts)~
r me >.,.Used Atlover Site j,
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TEMPORARY FittNOT REMOVED
/ : Review Photos
' RAMPS:NOT REMOVED I
p
~ Review Photos OlFF.ERENT CONTRACTORS No-('O )
iTEST!FREQU.ENCY
?
Check RM g,
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- Cause.'.
-a-
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Test p..
- 1
'. '(( Except forIRM
(..-
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ip-il.il.STEDf.ROCESS(Inspection Process)
- Other AreasIHave!NotiSettledlAlttiough v
IP0NDIF;ll!!!ED '
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. '.. Pond Filled Now o
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M'J.: ? ~ impacted Personn.el, iPir.ocedures, fControls
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74;75? SLOWDOWN.
Belo.v
.,.:; i " ". ? ?., involves Mois'ture Conten't-Qu'es'tlons :
- 4 ' ~
- 76-77iDr.yMears BORROWehREA(Stockpile)
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. Involves moisture Content 4ue.stions Be.lo#.
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ilN.III'ALiM01SI9RE CONTENT.,
-:..~2 '.?.
.Under Rcviewwnh Tests o.)
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.FINAOM01S'TU'RE CONTENT.
-. ?. "."... : ?
' Under Review with Tests
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- LATE:lN SCH.EDU.lf
. '.. No 0;her Areas Not.Affected.
- ;' ~ '
i, No Other Areas Not Affected 3
MOREiWINTERS i-
- /.
r PERSONNEL
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PR0XIMlW TO CC. 01. LNG POND -
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EXTENSIVE:D';hyd$07@ft U/G ~
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~lNSTALLATIONS. ~ ~
Preliminary 2I15Tl9 l
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ITEMS T@ TNS11GME fiGC DGSTJGBADLE.CAUS
.: REEXCAVAll0N AND BACKEltt Material Selectioni Inadequate Procedures & Controls Review Phctos,. Procedures,, Controls & Sutxfontractor. Daily.Repo' rts'-
' TEMPORARY FI'Lt AND RAMPS N01 REMOVED
'y,
inadequate P(ocedures. & Controls Review Photos. Procedures. Controls & Subcontractor Daily Reports
)
..f.:
'. Q-LISTED PROCESS-INSPECTION PROCESS c' ' '
-~-
Review Surveillance & Inspection Procedures in Relation.to
.i Other Findings I. ' # j Audit Procedures Bechteland Canonia c
.1ES11NG Results are Questionabfe - Relied' n Gid n
o Testingis under Review Procedure Changed 948 f
~
PERSONNEE
\\
Minimal!invofvement of TechnicallSupp0FVafter 74-75 Shvdown 1
Bulk:of Earthwork Compfete:
ReviewQualifications of Testing!,. I'nspectioni,, & Supervisory Personnel i
.c Preliminary 2/1509 '
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To CAllunt, P14-209B
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Faca TCCooke/R
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PO'ifer DATc February 20, 1979 Company Sussc cv MIDLAND PROJECT GWO 7020 - SETTLEMENT OF MID' AND DIESEL GENERATOR BUILDING
,,,,, m File:
B3.0.3 Serial: CSC-3852 co==cero~ocace CC GSKeeley
Reference:
CPCo Memo - DRW-12-78 and DRW-13-78 In. aference to the comments presented in DRW-13-78, we provide the following response for each numbered comment.
1.
Although the Bechtel summary reports the percentage as percent compaction, it is in fact percent relative density. A relative density of 125 does seem to be unreasonable, however, our efforts have been focused on clays. A number of proctor curves have been examined for compatibility with the zero air voids curve and some of these tests fall outside the curve which would indicate the selection of an incorrect standard for that particular type fill.
2.
Many tests were conducted other than those attached. A ramp was constructed in this area and these tests were not included but tests were available.
3.
Tests are requested to be taken every 500 cubic yards. There is no specification requirement to locate tests under buildings, utilities, or other references. Therefore, test locations are randomly selected, 4.
With the addition of the ramp tests, the number of tests appear to exceed the amount required. Since location is not addressed by the specification, we cannot address the question of test locations, l
5.
In determining the causes for this problem these items are being examined.
6, The borings and resultant tests are being examined both' by Bechtel I
and the consultants.
j l
7.
An extensive monitoring program has been implemented to identify the magnitude of differential settlements.
8.
The settlement rate for the Diesel Generator Building is signif-icantly greater than that observed in other structures.
9.
There are no settlement vs. time curves to compare the to date l
settlements with, but continued monitoring has shown that during l
the preload cycle the settling has started to slow down and to p
9tga 2 CAllun t File:
53.0.3 Serial: CSC-3852 level of f as more weight is added to the area around the buildings.
It is safe to say, however, that the to date settlements exceed Bechtels expectations.
We hope this satisf actorily addresses your comments. We assure that any other comments or questions have been brought out at subsequent meetings with Bechtel's consultants and ourselves, which you have attended.
Should you have any further questions, please contact us.
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MEETING NOTICE mzsm 22 101 g 7, A AfAl g /g BECHTELJOB N PROJECT SUBJECT OF THE MEETING Otuse Investigation and Analysis of Plant Area Backfi11 Settlanant Pznh1=nm DAY Wednesday, May 30, 1979 TIME TO
' LOCATION hfare h 7R3 ATTENDEES i
Bechtel Consaners
- 5. Afifi D. Ern A. Boos C. Rznt R. Caselah=7 (optional)
B. Mmeler B. Dbar J. Bink P. Martinez G. Richardson J. Manzack K. Wisiner The addressee, checked above,if unable to stand,is requened to:
@ NOTIFY CHAIRPERSON O SEND REPRESENTATION PURPOSE OF THE MEETING i
o Discuss action items listed in March 12, 1979 meeting notes (each attarlee is requested to prepara responses to the action items as we. bite) o Prepare outline and strategy for cause 1resentation to NRC schsiuled for mid,mana,1979.
l
- O AGENDA ATTACHED O MEETING NOTES WILL BE DISTRIBUTED j
CHAIRPpRSON PHONE DATE Ihrl Wimaner x 7169 5/22/79 i
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'7h-J. y BECHTEL INVESTIGATION INTO CAUSES OF DIESEL GENERATOR-BUILDING SETTLEMENT Consumers Power Company Midland Plant Units 1 and 2 o
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DEVIATION STATEMENT:
" INSUFFICIENTLY COMPACTED BACKFILL" l
is is Not Distinctions Changes i
Pond Dikes '
SpecIAcceptance Reliance on Testing WHAT DG Bldg l
Admin Bldg Plant Area Dikes Criteria l
Transf FND incl Evap Bldg Diff Material introduced Struct 1,
Cond Tank Area Cooling Tower Backfill Diesel Tanks Radwaste Bldg Tank Farm Area Pipe Tunnel i
WHERE Plant Fill Area Glacial Till Smaller Areas Small Equipment (Undisturbed)
Temporary Fill Nonuniform insitu Natural-Ramps Compaction Sand Q-Usted Process Different Contractors
. Inspection)
Test Frequency
(
Backfill under i
Powerblock l
N&W Plant Dikes Pond Dikes i
Undisturbed Plant Ril(? Cond Tank Area) l
}
Preliminary 2II'ifl9
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DEVIATION STATEMENT:
" INSUFFICIENTLY COMPACTED BACKFILL" (Cont.)
Changes Is is Not Distinctions l-WHEN Sept 77 Admin Prior to 1977 Pond Filled Borrow Area 74-75 Slowdown Moisture Mid 78 Other l
76-77 Dry Yrs Personnel l
Late in Schedule Initial Molsture l
l Content More Winters l
EXTENT Area South of Elsewhere or Proximity to l
Turbine Bldg Below EL615 Cooling Pond Extensive UIG In the Upper Installations Portion of the Reexcavated Area Fill Approx EL615 b EL E8 i
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Preliminary 2/15/19
POSSIBLE CAUSES Cause Test S PECIFICATION I ACCEPTANCE CRITERI A No used All over Site i
Questionable, under Review, Check RM TESTING v
l l
DIFFERENT MATERIAL
?
Under Review, Relates to Proctors STRUCTURAL BACKFILL No Used All over Site REEXCAVATED AND REFILLED AREA (Procedures and Controls)
Investigate Photos, Procedures, Controls f
No SMALLER AREAS l
NONUNIFORM COMPACTION Subcategory of Seexcavated Area Used All over Site f
SMALL EQUIPMENT (targe Utts) l
/
Review Photos TEMPORARY FILL NOT REMOVED?
/
Review Photos RAMPS NOT REMOVED?
DIFFERENT CONTRACTORS No j
?
Check RM TEST FREQUENCY l
Preliminary 2/15/19
E POSSIBLE CAUSES (Cont.)
i Cause Test V
Except for R/W j
Q-LISTED PROCESS (Inspection Processi Other Areas Have Not Settled Although POND FILLED Pond Riled Now
?
Impacted Personnel, Procedures, Controls l
74-75 SLOWDOWN
?
Involves Moisture Content Questions Below l
76-77 Dry Years
?
Involves Moisture Content Questions Below BORROW AREA (Stockpitel i
?
Under Review with Tests lNITIAL MOISTURE CONTENT l
?
Under Review with Tests FINALMolSTURE CONTENT i
No Other Areas Not Affected LATE IN SCHEDULE l
No Other Areas Not Affected MOREWINTERS 1
v PERSONNEL
?
PROXIM11Y TO COOLING POND EXTENSIVE UNDERGROUND i
INSTALLATIONS Preliminary 2/1509 i
0441845
ITEMS TO INVESTIGATE FOR MOST PROBABLE CAUSE(S)
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J REEXCAVATION AND BACKFILL j
Material Selection Inadequate Procedures & Controls 3
Review Photos, Procedures, Controls & Subc'ontractor Daily Reports
- i TEMPORARY FILL AND RAMPS NOT REMOVED 1
Inadequate Procedures & Controls Review Photos, Procedures, Controls & Subcontractor Daily Reports
!t li Q-L1STED PROCESS-INSPECTION PROCESS I
i Review Surveillance & Inspection Procedures in Relailon to Other Findings Audit Procedures Bechtel and Canonle i.
TESTING Results are Questionable - Rolled on l-Testing is under Review l
Procedure Changed 9/18 PERSONNEL Minimal involvement of Technical Support after 74-75 Slowdown Bulk of Earthwork Complete l
Review Qualifications of Testing, inspection, & Supervisory Personnel Preliminary 2/15fl9 i
i I
Bechtel Power Corporation M4aland IInito 1 sad 2 Bechtal Job 7220 February 16, 1979 PRELIMINAEr FROBLEM of IN5tTFFICIZNILY CafPACTED BACIFILL QUESTIONS to be INTEFTIGATED to ARRITE at MOST 7"*'
CAUSE(5)
(1) Ea-excavation sad maw 11 process -
(a) Material mix anacceptable?
(b) Construction did/did not have adeqs. ate procedural control for this type of activity?
(2) Nonremoval of temporary fill sad construction Tsaps?
(3) Was inspection process by Bechtal (QC, Field Enginaaring and Subcontracts) Canonia QC, and audit process adequate?
(4) Nonrepresentative or invalid test results used as acceptanca critaria?
(5) Personnel -
I (a) Insufficient support by technical groups such as Geotecht (b) Turoover due to Project dalays?
i i
(c) Turnover in UST personnalf (d)
Qualification of all parties (Bachtal Fiald Enginaaring, QC, Canonia, UST teah=4 e4===, et c.)?
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Bechtel Pow;r Corporation W4A1anA Units 1 and 2 Bechtal Job 7220 February 16, 1979 TASK FORCE FLAN l
INVESTIGATION INTO CAUSE(S) 0F INSUFFICIENTLY COMPACTED BACETILL Status of I
QUESTION Investimate By Investination I) Re-excavation & backfilh. process--
i a) Material mix unacceptable?
Consuitar:t review Fianned b) Construction did/did not have Raview of records Planned i
adequate procedural control for (QCIIs, Subcon. reports, this type of activityt etc.)
- 2) Nonremoval of temp. fill & con-Review of Construction In process struction ramps?
records, photos, soil test records, Canonia's records.
l
- 3) Was inspection process by Bechtel
. Plot soil test results & In process l
(QC, Fiald Eng. & Subcentracts),
review QCIIs, Canonia Canonie QC and audit process ade.
daily reports, audit re-quate?
ports, NCRs.
- 4) Nonrepresentative or invalid test Review UST records; in process results used as acceptance cri-plot & review soil test teria7 records; select & dig test pits.
- 5) Personnel a) Insufficient support by tech.
Raview freq. of visits Planned groups such as Geotech?
& trip reports.
b) Turnover due to Project dalayst Review Project manpower Planned records.
c) Turnover in UST personnel?
Reviewing UST records.
Planned d) Qualification of all partias?
Inview personnel records Finaned (Bechtel Fiald Eng., QC,
& resumes, tr=4=4ag ree-Canonia, UST technie4===, ate.)
ords.
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.a PRELIMINARY DRAFT
,P[f0.. o. - 1.n ".
a P. A. Martinez IilDLAND PROJLCT CWO 7020 - DIESEL CENERATOR FOUNDATION PRELIMINARY D VIATIC: STATD*ENT 2/15/79 (Kepler - Tregue Analysis)
File:
Serial:
y&w, f.
.t I
We have sone coraments on the techtel's approac h to identify the "most;, probable causes." Because the analysis could be self serving, CPCo has asked and Bechtel has agreed that CPCo should provide comments. These comiacnts are noted below:
1.
Can Bechtel provide information regarding the levels of confidence which can be obtained in arriving at the most probable cause(s).
j 2.
The individual ite=s considered are broad and general rather than specific and narrow. By not being specific, certain basic items are deleted and will be ignored or forgotten in the final analysis. We believe specification /
acceptance is one of the distinctions which is deleted on broad and general analysis while in fact it is very Eermain to the cause discussion.
3.
This method also discards items which are not different and concludes they are not problems. One could argue that this is not valid and use the liner plate bulge as an exciaplc. Embedded pipe was used on other projcets and j
cven in other areas of this project, yet at Midland it froze, cracked the concrete and bulged the liner plate.
ser.- -
i f
4.
We also note that devch G 21..ut CPCo and Bechtel Field were not involved in fd the development of the K-T Analysis used for this presentation.
l Specific co=m.nts on analysis items listed by Bechtel:
i Page 1:
A.
Sceand cole n; nadwaste Building and Tank Farn area should be under 15 l
C.
Tif th colur.n; Introduced Struct. Backfill - cite specification C-211.
,J
, C'.
Shguld alen sJJ the dif fersnce in Spec C-210, C-211.
~
D.
Method for conpoc. ting material for dikes vs. plant area fill (excluding north E west plant srec) was different.
Should be included under chsnges, c'
Under Chan;:es; less inspection should be included.
Pace 2:
A.
Third Colun.. ; Elsewhere or below 615' Was this material excavated (disturbed)?
B.
Colum 6 75 Slowdown - The time during the slow down (1974-75) would have provided more time for natural consolidation which was an early 1900's method of coepsetion.
C.
Colunn 5 - Marc uinters - The local of the fill af fected by " number of winters" is probably below elevation 615.
Since this locale is supposedly satisf actorily compacted " winters ' in itself should not be considered as an adverse factor.
Incorporation of frozen. backfill should bc considered, however.
D.
Column 5 - Opposite " Extent" - The lower part of the Diesel Generator building fou..;ation which lies below elev. 615' has already been subjected to preloading by the 20' of fill above it.
Since portions of the lower part of the fi'.1 appears to be satisfactory preloading promises good re-sults for the upper 20' of fill this observation may render the distinction I
1
~ of elevation of no conscquence.
In reviews of your records the differences in the fill between the lower and upper elevations should be documented i
i l
. and analyzed.
Pc;:e 3:
Column 3 - Distinction - Because buildings were constructed the problem was dinovered. This should be added as a distinction.
Is r.ot - Prior en 1977 - Special emphasis has been placed on the work below 615' and prior to 1977. obviously, the tisse period should be developed
for the fill placcd below olev. 615', and tha ccndicitns in which placo-
- xnt was executed.
It should 1 so be determined whether major re-excavations were made below elevation 615' and whether sand was re-introduced to the fill below elevarian 615'.
In total Bechtel shuuld scope the extent of the re-excavations in the problem arcas.
B.
Different.'Sterial and different contractors - relates to the capabilities of the individual personnel involved.
Both these areas should be checked as a possibic cause.
C.
Re-excavated and refilled area - More research is required to define whether materials.in question were disturbed.
D.
Small areas - Small equipment - These two items may contribute to 'non-uniform sad inadequate compaction and should be included as a possible cause.
Page 4:
A.
Initial & Final Moisture Content - should be examined from a time, and elevction standpoint.
B.
Proxicity to cooling pond - This item should be answered "no" at this time considering the test item " pond filled".
C.
Testing - Inspec tion - Should also be tied in with elevation and timing.
f Listed below are some of the items we feel shuuld be investigated as possible causes:
1.
Application of diff erent specification creiteria may have contributed to the problem.
Specifications may not have been clear or simple enough to satisfy proper impicmentation.
2.
Backfill sand and clay interfaces may have not been blended correctly. Sand in this regard may have been a problem.
3.
The fact that the work under the D/G Building was completed in smaller areas may have contributed to the problem.
4.
From borings it wuul.d appear that non-uniform compaction umy be a site wide prnblem.
9
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5.
Tho uso of smaller cquipment cnd 1crga lif ts should be irclud:d es a.psssiblo cause.
6.
Because Bechtel and Canonie both worked extensively in this area we feel that this aspect should be investigated.
(This would relate also to inspection effort, controls and space.)
7.
Structural backfill and pit run sands may not have been placed in the correct areas.
6 8.
During placement of foundation footings, the underlying soil may have been i
frozen and subsequently heaved.
9.
Frozen soil may have been incorporated in the fill and covered by subsequent f
lifts.
10.
Equipment u'tilized for small areas may not have been adequate to achieve the required compaction.
- 11. Material placement and compaction may not have been properly superviseJ or inspected.
12.
Areas of ra-excavation may not have been dressed up to blend with materials i
used for trench backfill.
- 13. Fill may have been placed during rainy days.
14. Material may have been placed but not compacted, or test frequency required by specifications may have not been adequate for small areas.
I
- 15. Bechtel inspection was not as detailed or comprehensive as canonie (lif t checks, time in field).
- 16. No qualified soils engineer on site during 1975-1977 backfill operations.
- 17. No plots of tests made to assure uniform coverage. This say be a specification deficiency.
18.' Test location incorrectly called out.
- 19. Areas may have been prepared solely for die purpose of taking a test.
20.
Test records were not reviewed in a timely fashion and in the depth necessary to identify testing errors.
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21.
Invastigste ths refill vs. the prinary precess cf piteing sails. Th2ro could ba some differences that cause the problem.
22.
Look hard at the Bechtel vs. Canonie performance - why was there a dif ference in performance.
23.
Flooding sand in trenches was a common practice to achieve compaction. It may be that surrounding clays were saturated and subsequently sof tened resulting in weak fill and poorly compacted sands.
24.
Bechtel's QC involvement administration and direction of U.S. Testing activities may have resulted in inadequate testing procedures.
i The above comments do not necessarily provide guidance or limit the extent of possible concerns or areas of investigation and should not be constructed as such.
D e
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I na To BMItrgisclio, JSC-220A q.
po DE!!orn, Midland
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C0ns!ESS occ October 31, 1973 EQVjQl' seacet MIDLAND PdOJECT - NRC EXIT INTTRVi!1' 0F OCTOBER 27, 1978 File:
0.4.2 Serial
280FQA78
$Q',y,y 2
4 cc SAfifi, Bechtel - Ann Arbor J14orley, Midland i
WRBird, JSC-216B CSKeeley, P14-408B f
RLCastleberry, Bechtel - Ann Arbor DB:liller, Midland TCCooke, Midland JFNewgen, Bechtel i
The following people were in attendance at the subject exit interview which was conducted at the end of C. J. Callagher's inspection of October 24-27, 1978:
CPCo Bechtel NRC RCBauman WLBarclay
' RJCook TCCooke ABoos CJGallagher JLCorley RLCastleberry Dehorn LADreisbach i
CSKeeley PAMartinez I
DBM111er BHPeck
+
RMWheeler
~
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'Mr. Callagher stated that the visit was a follow-up on 50.55(e) report of the diesel generator settlement and that it was also a fact finding visit. The in-spection consisted of a review of past data, activities in progress and planned l
activities for future work.
Inspection was performed by review of the FSAR com-mitments; Specification C-210; Specification C-211; PQCI/IR C-1.02; Dames and Moore Report of Foundation Investigation and Preliminary Explorations for Borrowed Materials dated June 28, 1968 and supplement to this report dated March 15, 1969; preliminary data on diesel generator settlement problem including boring plan, cross sections of fill, blow count versus the elevation graphs, lab data, settle-ment data, boring logs, dutch cone logs, weather data and penetrameter. readings in test pits; design drawings C-45, C-109, C-117 and C-1001; soil tests taken in the diesel generator building area during construction compiled by B. T. Cheek, Bechtel QC; observation of soil testing at the test lab and in the field; and j
discussions with Bechtel Geo-Tech, Project Engineering Field Engineering, Quality Control Engineering, U.S. Testing, Consumers Power Company, PHO and QA personnel.
i Mr. Callagher stated that he would not handle the findings as noncompliances, j
i however, they could become itemn of noncompliance when they are reviewed by his management.
o His findings / observations were as follows:
f 1.
The FSAR states that during operation, settlement readings will be taken every 90 days.
11ccouse of the diesel generator sectiement problos, this frequency should be re-evalunted for adequacy.
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FSAR Table 2.5-14 " Summary of Foundation Supporting Seismic Category I Struc j
1 generator turcs" Identifies the supporting soil mat eriaJs under the dicscHowever, construction 2.
building as being controlled, compacted cohesive soils.
drawing C-109, Rev. 9 and C-117, Rev. 6 identifics the material in this area Zone 2 material is identified as random fill described In the field as Zone 2 material.
as any material free of organic or other deleterious mate d
d clayey material, in particuJar, sands, clay, and lean concrete, cilty sands.
A review of the where, in actuality, cohesionless sands have been utilized.
b 594'-608, areas records indicate that sands have been used between elevation This indicates the ex-611'-613' and areas between 616'%'Ander the diesel generator of elevation tent of the variability of the material placedMr. Callagher did not feel it was go building foundation.
random material under the support of a structure.
FSAR Table 2.5-21 " Summary of Compaction Requirements" identify rando ified to require a compaction ef fort of a minimum of 4 passes with the 3.
l Quality equipment in this table.of Bechtel Specification C-210 nor an inspection require control Instruction C-1.02 for backfill.
d FSAR section 3.8.5.5 states that settlements of shal' low spread footings f Site Survey on compacted fill are estimated to be on the order of h" or less.
~
4.
Program has identified settlements in the diesel generator building fou
~
on spread footings to range from 0.55 inches to 2.30 inches and in excess of 3.0 inches for the diesel generator pedestal.
FSAR figure 2.5-47 indicates the foundation of the diesel generator buildin 5 it is to be at elevation 634', according to design drawings C 5.
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t
.3n to be at 628*.
". 4 ra-c.*
Specification C-210, section 13.7.1 requires al 6.
A.
i ffort mined by ASTM D1557 method D which requires an effective compact ve eHow of 56,000 foot-pounds of energy per cubic foot of soil.13 4
This to be performed in accordance with tests listed in sec i
ided mum lab densities to be determined using ASTM d
(Bechtel Modified Proctor Density).
Density for determining maximum proctor density versus optimum moistu This conflict results in an unconservative d method of assuring content has been utilized.
pathod of determining the maximum proctor density an'In particular, the that the required percent compaction is achieved, fied Proc-actual in-place compaction would be less using the Bechtel Modi hdD.
tor _ Density as a reference than using the standard ASTH D1557 met o Bechtel This is oue to the-fact that the compattive cncrg dD-20,000 foot-pounds versus 56,000 foot-pounds.
~
example:
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9 gMpW Se ' M -
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identifics li ting C-1.J2 section 2.4 testion C-210, ucc-y'%'
9 a
described in und includrs SpecifLen Condol Instruct ton apparent conflict na s
s E
y criteria BechtelQun13t'y in @cetion includes the
' ves(13atio{ performed by15, 1969 A
~
opgel l,Q de Q which tion.13.7 < &nd 12 detail in part A above.
d Marchcriteria for'.3 the i
in original subsurf xein steport supplengna date c;f f on compactioncompactivermina-of the d
mum density using a review ~and$'dtumenterecWavlsdhire Modjfied Proctor detecorresponds to 95 g
. further rs E g100% g mikinum A
and Hocre h t3 he 95'O c.ca-Yis (re,J ltirg ro:n gcchec1f Becisel,W41fied Pro page 16 indicces t a r
D mes f
cupport of structu u
method which and Moore d
of 20,000'fBot-pout wever, this 10C% o sqo,the standard AST approxi-
' compactism accuEJingtd aeghtel $d tion). 3o ral Jif t's maximum fill'ahd backfill macet ccdAto.
h u izon fiM cea paction accordingentir'e. plant a
isere content' in t earv. Bechtel specific i
c h' c' +11 i
M compactability of tb5 mater Report, page 15 etate for the en-under the di'esel g near ty.tiop'6fmura mo 6-8",153oAse' thicioies
^
which affects ther Neilitiesevalveted.'
and at or N
mately linest duct banks, and oaf f ected 'and mus,t be m
of 12 inchen X; ' '
calculations with nd conflicts havink seto[decign:sumpt* bnq mad s
Piping, condent.stocrator buildingmay a lso be not was lekna 7
i; desigt. calculette.s, a.:. t s % ~ q !
'."-X.?}'
loped in
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4.
Mr. Callagher'ststed'h (
crack that har.deveBechtel will be discussing 1,1censings height of theof ra4 con 9ty%d with members' from
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8.
d
- ftie cf.ack extendesi. fullseen.frem the in the FSAR with observed the struc u,cre.Q uas s
obser d
staf f has indicate east ettorior r power Corpany.sprial footing asbeen' induced flexura The The inspecpr v311 ACI-318-71 Geo-Tech and Consumeredown through theexpected to hwe 9
kith Bechtel designbeing evaluated.d to th outside the wall and continued crack is niu Discu 2
n:1y exceeded.
Il0.6.EQirits'flet.uraf crack expose study ar,U:.:. urre.
The is l ment.
the but1 ping.by differential sett e
%tred.ifth'fs',lidit applic-e with the
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this 4 rack isn.entary sectioaction{mayt.}re f'
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's med in that
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The followin; tpstss'tn dieds by U.Sy,{ p C
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able' tests q
70, 3.
of,(increase 1.ab TestJSIM D1557-/1556-64'f, tnd;the rate w
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v luated on the incretss.
B.,Fleid Teat! ASTM D r
of the U n cE in ",the\\lewp(ulo structure r
a should be #cffets 7_
d t1 t
Calculationsof the pond fill an.
C don not ine.
rial o( this gJ
,, ined 'fo: the type g( mate 11 h t the ERCof the problem is
- s...
Mr. Cn11agher. s't$ted t a resolutio'n m
/'lations ifould be deter % }(t -
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a fix'or
'12.
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to be
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I INCO'ISISTENCIES DISCOVERED TO DATE
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Standard No. 7220-C-501, " Civil & Structural Design Criteria"(Page 8) i I.,'*(,., b.
r g *g.g " Filling operations shall be performed under the tichnical supervision of a qualified Soils Engineer who will perform in-place density tests in compacted
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e fill to verify that all materials are placed and compacted in accordance with hpp[f t.)
recommended criteria."
Bechtel Field did not have a Soils Engineer on site.
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Bechtel Specs C-210 and C-211/
SG s. v.,1.,.
Dames & Moore..,"All fill and,ba,c' fill materials.'st}ould be placed at or
.,i?
hdfizontal lifts approximately~
.l.d.,six to 'e'lght "inIhis~1n 1 6 ~t'icknEsstnearthe~optimummoisturecontent'innear.
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BechtelSpecs-C-211,Section542.2}j,Hpweyer,innocaseshalltheun-
,p.,,,[p' ".Y l' fl[,,t,hje,,,{;compactedliftthicknessexceed12 inches."
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60',. I rs,h * '.,,,,
p *( :* f :,,y rM.t
,.0bviously, these two requirements conflict.
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- f. Dames & Moore Report (Page 15) f
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bI Bechtel Specification C-211
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Dames & Moore "In addition, no compacted soils should be allowed to freeze. # };'.
g.
gd.hf If fill or backfilling operations are discontinued during periods of cold pf.;,,)
p.C /
weather, it is recommended that all frozen soils be removed or recompacted 8
(' /
prior to resumption of operations."
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- f. e * *,..V Bechtel Spec "No backfill shall be placed upon frozen surface nor shall ',, +,-
3'3 ', b any frozen material be incorporated in backfill."
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- 4)
References:
j, Bechtel Design Staudard C-501 s.
b.
Rechtel Spec C-211
~
h Bechtel Design Standard - Table of Minimum Compaction Criteria Purpose of f_ill_
On site support of structure!
Sand soil P reent relative density A g4.lQyl,I't:'?y'b tof' D2049-69) 51 "Cohesionless (sand) material shall be compacted Spec C-211. Secti n 5.5.
to not less than\\ 9%' relative density.... by ASD! D. 2049" 8
Spec and Design Standard conflict.
- 5)
References:
Dames & Moore Report (Page 14)
- ,a.
8;o' b.
FSAR Page 2-7
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(Ys Drawing C-44 1
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Dames & Moore "It is recommended that all areas in which the final grade will be raised by placement of fill be stripped of all topsoil and other unsuitable soil if any and be thoroughly proof rolled."
FSAR "All loose in-site sands, sof t or compressible clay soils, and organic Juils will be excavated in the Turbine Building area."
tv t I
Bechtel Drawing C-44, Note #4 "Within the excavatian area shown all loose surficial sands with relative nsity les's' that 7 % sha e removed."
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Added to this drawin 5.
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Boring logs show us tha il was not removed, nowever, it may be greater than 75%.
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80EP10.1 3 General offis w 212 Weer Michiesn Avenue, Jocaison, Michisan 49201. (51717884M50 January 23, 1980 Mr Tom Newell Acting District Engineer PO Box 30028 Lansing, MI 48909 MIDLAND PLM;T - SITE DEWATERING As part of the engineering design to contml groundwater elevation in the area North of the cooling pond, dewatering wells have been installed by Ioughney Dewatering, Inc, Certificate of Registration under Act 294 attached.
Approximately 138 temporary wells (1-1/2") have been installed since August 1, 1979 Identification of individual wells, well depth and estimated pumping rate of each ' series' of wells is provided in the attached data sheets.
Well locations are identified in the attached drawing entitled " Midland Power Plant, Temporary Devatering Well Iocations".
he devatering discharge of all vells will be directed to the cooling pond.
As you can see from the data sheets, the flow to the pond will be about 320 Data derived from the temporary dewatering operation will aid in the gpm.
design and operation of a number of pemanent devatering wells to be installed at"some future date.
he Company requests devatering as described above be addressed in the follow-ing parts oi the draft Midland NPD25 pemit issued January 2,1980:
(1)
Fact 3. set (2)
Final Effluent Limitations - Cooling Pond Discharge prior to outfall 001, page 6 of 19 he dewstering dischar6e to the cooling pond is expected to cor::mence January 31, 1980. Unless advised otherwise by Staff, the dewatering discharge to the pond will proceed as scheduled.
If you have any questions wgarding this matter, please let me know.
MrEh
~
R L Fobes BCC TCCooke/RLBull, Midland Environmental Advisor DLAndersen, Midland RCBeumnn, P-14 412 CC Chang Bek RFGreen, P-14-303 RLFk.sh W mst/TRhiruvengadam, P-14-209B u/cfMcAd
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y antzul groundwater elevation in the
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dividual wells, well depth and estimated m
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is provided in the attached data sheets.
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O ttsched drawing entitled " Midland Power en 3
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ions".
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he flow to the pond will be about 320 m
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scribed above be addressed in the follow-
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iemit issued January 2,1980:
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sling Pond Discharge prior to cutfall V
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'g ig pond is expected to commence January 31 k*
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- aff, the dewatering discharge to the pond lp ]'T n
4 m
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=
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, tis matter, please let me know.
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BCC TCCooke/RLBull, Midland DLAndersen, Midland I
RCBau:can, P-14 412 k W lu_s$ $ V 5 ?.' f f l
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[,bernv5-k CONSUMERS From JEBrunner, P-24-513 POWER Date October 3, 1980 COMPANY Subject MIDLAND PROJECT Internal MINUTES OF 8/29/80 MEETING TO APPEAL NEED FOR Correspondence ADDITIONAL B0 RINGS FILE:
0485.16 UFl: 00234S, 71*01 SERIAL:
9610 CC JWCook, P-14-113A MIMiller, IL&B TCCooke, Midland JARutgers, Bechtel GSKeclcy, P-14-113B
.TRThiruvengadam, P-14-400 DBMiller, Midland CWiedner, Bechtel The meeting was convened at 1:00 pm at the Midland Service Center. The attendance list is enclosed as Attachment 1.
The agenda for the meeting is enclosed as Attachment 2.
Fellowing introductions, G S Keeley summarized historical events relating to the supply of soils-related information to the NRC. Keeley indicated that CP Co had submitted information via 50.54(f) responses, 50.55e reports, meetings and site visits, and responses to requests for document prcduction covering a period of almost two years (See ).
J D Wanzeck of Bechtel Geotech then described the soil investigation done to date, all of which excepting information on 59 borings have been supplied to the NRC in connection with CP Co's proposed soils fix. Wanzeck reviewed past borings taken to date, test pits, cross-hole shot.s, and settlement information as well as other aspects of CP Co's past efforts to develop soils data necessary to demonstrate the adequacy of the proposed fix. He stated that CP Co had taken over 900 borings at the Midland site and expressed the opinion that no additional borings are necessary.
Dr Ralph Peck, Bechcel's consultant, who is an internationally recognized expert on foundation soils, then discussed the technical basis for Consumer's conclusion that the pre-load program would provide an acceptable solution ot the diesel generator building settlement problem. Peck, with admirable clarity and organization, described the pre-load program, the settlements observed upon surcharging, pore pressure variations as observed through piezometer readings and the future' settlements which may be predicted based on an extrapolation of observed settlements. Peck expressed the opinion that the pre-load approach is universally accepted in the soils field and that the information directly supplied via pre-loading would accurately predict future settlement behavior.
A method utilizing results from borings lacks this accuracy, according to Peck, because of inherent inaccuracies in an indi.ect approach, and because the "fix" would not eliminate all variations in soils parameters below the dies #el generator building. Peck felt that the borings approach would erroneously predict greater settlements than would be observed.
j l
' Peck's presentation was illustrated with charts and graphs showing settlement measurements and predictions with and without the surcharge, variations in
. porewater pressure during and af ter the pre-load, and the loading level on ic1080-0038bl00 i
\\
2 soils below the dicsc1 generator building as a function of cicvation during the prcload. The latter clearly showed that the effective stresses in the fill up to elevation 603 under full surcharge load exceeded the post-surcharge effective stresses upon the fill with the full dead and live loads, including effects of permanent dewatering. This was documented in Amendment 81.
Peck was followed by A J Hendron, Jr, another noted expert in the field.
.Hendron began his presentation with an analysis of inherent errors that can be expected in settlenent computations derived from consolidation tests performed on best-possible, undisturbed samples obtained from borings. His conclusion was that the measurement errors inherent in such an approach would totally eliminate any value otherwise obtainable.
Hendron then addressed the subject of bearing capacity. He stated that new calculations which he had recently performed provide a more accurate prediction of the behavior of the soils from a bearing capacity standpoint than had past analyses, which had excluded certain terms from the bearing capacity equation. His latest calculations, which included such terms, demonstrated a factor of safety from a bearing capacity failure on the order of 6 or 7.
The design goal for bearing capacity safety factor is 3.
Hendron concluded that additional borings were totally unnecessary to demonstrate adequate bearing capacity. This was documented in Amendment 81.
H T Davisson then concluded the technical part of CP Co's presentation with a discussion of underpinnings - piles and caissons. Davisson stated that the use of underpinnings was designed to eliminate the need-to consider soils characteristics in plant fill. Additional borings were technically inferior to the in-place tests under load which would be carried out when underpinnings are installed. Davisson felt that additional borings would be useless and misleading. This was documented in Amendment 81.
Af ter a short recess, the staff presented its arguments in favor of more borir.gs. Lyman Heller, US NRC, in a short introductory statement, argued.that the additional borings were not intended to'" negate" field data, but only to supplement it.
Heller also argued that the Corps had requested only 18 additional borings, compared with over 900 already taken. Heller further stated that the staff had been " burned" twice at North Anna by the use of field data alone.
Joseph D Kane, US NRC/NRR/HGEB, then presented the major substance of the _NRR arguments. Referring first to the cooling pond dike, Kane stated that a j
series of borings and lab tests should be taken to provide the dikes stable under all conditions and to determine the properties of fill af ter compaction.
In the area where underpinnings would be installed, Kane stated that it was proper engineering procedure to estimate foundation'bchavior prior to any field tests. Kane also stated that borings were _necessary because of possible-space limitations 'if the number of caissons necessary to do the job was.under estimated. He also expressed concern about negative skin friction being factored into. underpinning design.
I ic1080-003Sbl00 r
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3 With respect to the diesel generator building, Kane admitted that field testing was advantageous, but that borings would confirm predicted values, that he was not sure if primary consolidation had been coapleted, that the building had settled 4" before pre-load and 3-1/2" during prc-loading, and that certain observations of piezometer Icvels taken during the surcharge may have resulted f rom errors introduced by varying the level of the cooling pond.
Kane also mentioned that CP Co had presented only positive effects of
, surcharge, and had failed to address 4"-settlement which took plac2 and its effects on structures. Kane failed to state what connection the latter point has with the additional borings issue.
After Kane's presentation, the NRR caucaused.
Messrs Vollmer and Knight then questioned the various individuals present.
Vollmer indicated that, in view of the present political climate, he was somewhat surprised at CP Co'.s attitude toward not supplying additional technical information. He inquired of Mr Cook whether or not CP Co's objections went to the mere necessity of the borings or went to the possibility that the borings results would be'actually misleading and counte rp roductive. Mr Cook answered that both points were primary objections.
Mr Knight wanted to know whether or not CP Co had been advised of the additional borings request when the latest 66 samples were taken. CP Co answered in the negative.
Following a discussion on the negative pacewater pressure question (during which there was an exchange between Kane, Peck, Hendron, and Davisson, in which Peck stated that the results were exactly as he would expect), Vollmer indicated, though somewhat ambiguously, that the data supplied seemingly satisfied his concern on the settlement issue. He further stated that new information had been presented during the meeting and that this should formally be supplied. he stated that if he had to make a decision immediately he would have to agree with the staff's recommendation.
It was decided that CP Co would supply a sumary of all soils information including the additional information supplied at the meeting,. by 9/15/80.
The meeting was then adjourned.
On the same day as and prior to the above meeting, Mr G Lear (NRC) was shown pictures of the piping associated with the return of emergency service water.
The part of the piping which is buried along the sides of the emergency cooling pond was exhibited to Lear using the following photos:
Cartridge 4253 Frame 1965 1966 2057
)
2058 2033 j
2039 l
ic1080-003Sb100
4 Pictures 905 906 907 908 1080 1081 The review of the above photos showed that the pipe was located in an excavated trench in the berm and not the dike slope. Therefore, a postulated baffle dike failure precipitated by the trench is not considered to be a plausable scenario and would not interfere with functioning of the Emergency J
Cooling Pond.
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NRC Exit on Diesel Foundation -
s Gallahger was asked to follov-up on 50 55(e) Report to fact-find on what brought it about and what our plans were.
Findings which von't be infractions, but their 3
i j
management vill evaluate. FSAR commits to checking settlement every 90 days.
Assumes we vill modify as necessary after ve take corrective action.
[
FSAR 2 5-lh gives supporting materials as cohesive e,ontrolled fill. Another table i
shows clays. Thought it would not be sands. Feels random fills are not good policy.
C-109 and -117 indicate Zone II, this is discrepancy from FSAR #1.
2 5 21 summarizes compaction requirement. Requires k minute passes but not req by C-210 until added in 1977 and was not imposed. C1.02 does not make reference to it.
.,US Testing says they were not required to.
This is discrepancy from FSAR #2.
3.8 5 5 shallow footings settlements estimated to be 1/2" or less. Has to be corrected in FSAR.
Figure 2 5 h7, Diesel Generator Building 634 but its at 628.
C-210l -211,1.02 (QC instr) - C-210 Section 13 71 requires au cohesive backfill to 955 but 13.h refers 12.h.5.h to Bechtel Modified Proctor which gives unconservatism.
~
1.02 is confusing since has to compact to different requirements.
Dames & Moore 3/69 - recommends 100% and at or near 6" to 8".
t i
~
Ductbanks and piping under building was looked at and probably effects diff settle-(c.
ment.
c.
Using random fill makes it difficult to determine amount of settlement yet it was o
estimated as 1/k". Asked for calculation for basis of estimate but has not received.
L
(.
Crack on east vail. Does not feel these are minor but are flexural cracks and if so e
I have to correct to meet ACI.318 Section 10.k.
Feels Testing people are testing ok.
t
<jl 2
I Does not believe material var, placed as is indicated. Have lov blow counts.
Pond level should and rate should be taken into account on effect on soil.
Should evaluate and effect on BWST main transformer tanks.
Diff water levels between diesel generator area and BWST area.
Reviewed plans for monitoring preload.
NRC does not feel this is corrective action.
Says sat foundations are usually used with r'andom fill.
GSKeeley/cg 10/30/78 ek i
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Bechtel Power Corporation Ql3k2l 777 East Eisennower Darkway Ann Arbor, MicNgan u.neceu P O Box 1000. Ann Areor, Michgan 48106 October 8, 1980 BLC-9839 Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201 Attention: Mr. J.W. Cook Vice President Projects, Engineering and Construction
Subject:
Midland Plant Units 1 and 2 Constsners Power Company Bechtel Job 7220 50.54(f) September Status Report Attached is the September Status Report giving the status of cosanitments made in the responses to NRC 50.54(f) Questions and supplementary questions from letters, meetings, etc. The structure of the report has been changed to group iuans by status code to allow greater visibility of outstanding items. The following is a susanary of the attached report:
Status Codes:(1) _que s.1-22 (1) Ques.23(1) Ques.24-35(1) Supp. Ques.(1)
Code 1 62 30 0
0 Code 2 4
10 5
4 Code 3 21 11 2
0 code 4 16 5
5 3
Code 5 8
0 0
2 l
Total Actions 111 56 12 9
(1) See first page of status report.
The October Status Report will be submitted by November 10, 1980.
Y y yc urs,
ff e
John A. Rutgers Project Manager JAR /YDP/kes
Attachment:
50.54(f) September Status Report cc:
W.R. Bird ; G.R. Eagle (CPCo/AA); D.E. Born; G.S. Emeley; B.W. Marguglio.
(all w/a)
Written Response Requested: No I,\\
J.
ss 00T 131980 KBU~dd f.DJ3I nn aana.
~
CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50. 5f4 (f) RESPONSES STATUS EORT:
PARTS I AND 2 cm Lo
-n-N Bechtel Power Corporation October 8, 1980 i
i
l MIDLAND UNITS 1 AND 3 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES j
r
=
l LEGEND RESPONSIBLE ORGANIZ ATIONS:
" Status Codes:
1 complete, verified by quality assurance PD Plant design CPCo Consumers Power Company PS Pipe stress CPCo QA Consumers Power Company quality LS Licensing assurance 2
Reported complete, not yet verified GT Geotechnical CPCo PMO Consumers Power Company project services management organization 3
Due, but not complete. Dates have been CE Civil engineering reforecast. Original due dates are services in parentheses.
FE Field engineering QA Quality assurance 4
Not yet due QE Quality engini-neering 5
Insufficient documentation in 50.54(f) files to establish or verify status Notes:
1.
Commitment dates for action items indicated by asterisks (*) have been transmitted to the NRC.
These dates will not be changed without a formal transmittal to the NRC.
2.
Questions 1 through 22 action item numbers are basically the same as those used by the diesel generator building task group, but have been modified to acknowledge action items / commitments made in all revisions of the responses.
3.
Question 23 action item numbering is based on the Response to Question 23 submitted to consumers Power Company via via BLCS8460, J. A. Rutgers to C.S. Keeley, dated Eovember 14, 1979. These action item numbers have been modified to acknowledge action items / commitments made in all revisions of the rasponses.
4.
Questions 24 through 35 action items were identified for the first time in the April ise :e of this status report and will be referred to by the action item numbers established in that issue.
psferences (applicable to Part II only):
A.
Letter from G.S. Keeley to J.A. Rutgers, CPCo Serial 8548, 3/27/80 B.
Commitments made in February 1980 meeting with NRC, Midland, Michigan C3 4
-t:-
0%3 Sheet 1 10/8/80 4
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CPR 50.54(f) RESPONSES yNt? Is COMMITMENTS FROM QUESTIONS 1 to 35 Resp Responsible Due Item Description Page M
Org Engineer Date Status Status Remarks 1-5*
Deview specifications not included in the 1-5 0
QE 790629 5
See Item 23-10 specificity study initially I-8 0
1-19* -Complete in-depth review of soil test I-17 GT 790731 5
results 6-5 Monitor the piping between the BWST and 6-1 1
CE 5
ongoing activity the aus111ary building 6-6 Evaluate the settlement from Item 6-3 in 6-1 1
PS 5
Complete monitor upon load test accordance with the procedure described in Question 17 5
See Item 7-1 7-2 Make results of continuity checks and settlement surveys available 5
See Item 7-1 7-3 If f urther corrective action is required, determine corrective measures 13-9 noview piping system for seismic response 13-2 0
PD A. Patel 5
(13-2) from Item 13-6 791231 5
15-3 Prepare additional response to the NRC Sheet 2 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COfMITMENTS TO NRC ON 10 CFR 50.54(f) RESFONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item bescription Page Rev Org Enginee r Date Status Status Remarks 4-6 ronitor the non-Seismic Category I con-4-4 5
GT J. Wanzeck 801130 4
Load test ongoings results CE S. Rao will be evaluated by densate storage tanks geotech and civil 4-8 Fill' the BWST with water to perf orm a 4-3 3
GT J. Wanzeck 801130 4
See items 6-1, 6-3, 6-6, and full-scale test of subsurface material CE S.
Rao 31-1.
Dwg C-1148 issued for construction. Load test to start in 10/80 6-9 Determine long-term settlement based on 6-2 3
GT 4
Geotech to review load and predict long-term the measured settlement of the loaded settlement based on Items ta nks 4-6, 4-8, a nd 4-9 8-3 Review and modify the monitoring f re-8-2 0
CPCo 850101 4
quency for the diesel generator pedestal markers af ter 1 year of operation 12-5 Pressure grouting of void below the mud Tb1 0
CE R. Zao 801231 4
mat of the control tower as required 12-1 13-7 Review structural design f or seismic 13-2 0
CE 801031 4
(13-1) response f rom Item 13-6 13-8 Review Seismic Category I equipment f or 13-2 0
CE B. McConnel 810201 4
(801231)
(13-2) seismic response from Item 13-6 13-10 Daview electrical system for seismic 13-2 0
CE B. McConnel 810201 4
(801231)
(13-2) response f rom Item 13-6 13-11 Conduct a seismic resnalysis for the 13-2 0
CE B. McConnel 801031 4
(13-3) aervice water pump structure 13-13 Review Seismic Category I equipment for 13-2 0
CE B. McConnel 810201 4
(801231)
(13-3) seismic response from Item 13-11 13-14 Review piping system for seismic response 13-2 0
PD 4
(13-3) from Item 13-11 13-18 Review Seismic Category I equipment for 13-3 0
CE B. McConnel 801231 4
(13-4) seismic response from Item 13-16 13-19 Review piping system ter seismic response 13-3 0
PD 4
(13-4) from Item 13-16 Sheet 3 10/8/80
i MIDt.AND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART I: COMMITNENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
. Description Page Rev Org Engineer Date Status Status Remarks 13-20 Review electrical system for seismic 13-3 0
CE B. McConnel 801231 4
(13-4) tesponse fras Item 13-16 13-21 Iwestigate the ef fect on underground 13-5 0
CE B. McConnel 810131 4
(13-5) utilities for differential building PS displacement resulting from Items 13-6, i
13-11, 13-16 17-4 Profile the borsted water lines by 17-1 2
CE 4
Tracked by Item 6-5
_ opt 1 cal means 23-37*
Consistent with the intent of Items 23-33 5
OA 801231 4
23-35 and 23-36, OA will review noncon-forisance reports which were open as of November 13, 1979, or became open prior to implementation of the improved Project Quality Assurance Trend Analysis program as stated in Item 36.
23-40*
Design documents, instructions, and pro-I-11, 4
FE,0C 801128 4
Project engineering to (31) cedures for those activities requiring 23-20, provide list of design inprocess controls will be reviewed to 23-30 documents to FE and Oc to assess the adequacy of esisting proce--
start this item dural controls and technical direction.
Engineering review is scheduled for com-pletion by October 24, 1980, and field engineering and quality control review is scheduled f or ccumpletion by Nov-ember 28, 1980.
23-41*
OCIs in use will be reviewed to ascer-I-18, 5
OC 801115 4
See Item 23-34 tain that provisions have been included 23-22, consistent with the revised control docu-23-25 ment, SF/ PSP G-6.1, Quality Control Inspection Plans.
Sheet 4 10/8/80
NIDLAND UNITS 1 AND 2 NASTER LIST OF COISIITMENTS TO NRC ON 10 CFR 59.54(f) RESPONSES (Continued)
PART Is COIWIITN8tf?S FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
' Description Page g
Org Eng i nee r Date Status Status Remarks 23-42*
Design documents, instructions, and prc>-
I-11, 4
PE, 810123 4
(31) cedures for those activities requiring 23-22, FE,0C (40) inprocess controls will be reviewed 23-30 to assess the adequacy of existing pro-cedural controls and technical direction.
Engineering review is scheduled for ccupletion by October 24, 1980, and field engineering and quality control review is scheduled for completion by November 28, 1980. Any revisions required will be completed by January 23, 1981.
23-43* The impact of Item 41 on com-23-22, 4
OC 810115 4
plated work will be evaluated, and appro-23-25 priate actions "ill be taken as necessary.
24-1 Determine final number of observation 24-21 5
GT 811031 4
Ongoing activity wells 24-2 Develop frequen7 for monitoring the 24-21 5
GT 810131 4
Ongoing activity observation wells 24-3 Develop system and schedule f or mont-24-22 5
GT 810131 4
Ongoing activity toring sand removal 24-4 Evaluate results of temporary dewatering 24-8 5
GT 811031 4
Ongoing activity system to verify design bases 25-3 Revise seismic analysis f or service water 25-5 5
CE 4
Tracked by Item 13-11 pump structure using soil properties determined by the recent investigation and any foundation modification c3 C.aJ
.R N
Sheet 5 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMM1? 1ENTS TO NRC ON 10 CFR 50.54(f ) RES PONSES (Continued)
PART Is COMMITMENTS FROM OUESTIONS 1 to 35 (Continued)
Resp Jespoasible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks 1-21A Modify DCIs based on Item 1-21 NA OC E. Smith 801115 3
See Items23-15A, 23-34, (800901) and 23-41 1-23 Incorporate scientific sampling plans for I-20 OC 801115 3
See Item 23-34.
Committed (791019) statements not yet com-inspe ct ion piled with 13-6 Conduct a seismic resnalysis for the 13-2 0
CE B. McConnel 801115 3
(801015)
(13-1) diesel generator building 13-12 Review structural design for seismic 13-2 0
CE 801231 3
(800831)
(13-3) respcnse from Item 13-11 13-15 Review electrical system for seismic 13-2 0
CE B. McConnel 810201 3
(801231)
(13-3) response from Item 13-11 13-16 Conduct a seismic reanalysis for the 13-3 0
- 8. McConnel 801215 3
(800815)
(13-4) auxiliary building 13-17 Review structural design for seismic 13-3 0
CE R. Zao 801130 3
(800930)
(13-4) response from Item 13-16 14-2 5
CE R.
Zao 801231 3
Analysis ongoing 14-7 Analyse the BWST foundation for variable (800831) foundation properties 14-B Compare allowable versus calculated 14-5 5
CE 801231 3
Analysis ongoing (800831) forces and masents at critical sections for auxiliary building electrical pene-tration area and service water pump structure 15-2 Espend the Midland project structural 15-2 0
CE D. Reeves 801130 3
Design criteria in CPCo (800831) review design criteria for Seismic Category I structures to include the differential settlement ef fect.
17-3 5
PS J.
Lege tte 810131 3
Report on method for 17-5 Analyse buried piping considering the (800801) analysis being reviewed probable ultimate settlement. Provide unique resolution for any unacceptable stress conditions for the portion of the syrten 17-6 Investigate the excess rounding of Tb1 2
PS J. Legette 810131 3
Same as Item 17-5 17-2 (800801) profile data i
Sheet 6 10/8/80
MIDLAND UNITS 1 AND 2
~
MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) R ES PONSES (Continued)
PART It COMMITMENTS FROM OUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remerks 18-1 Perform reenamination of the stresses in 18-1 0
PS J.
Leget te 810131 3
Same
=s Item 17-5 all Seismic Category I connecting piping (800801) between buildings as a normal iteration of design. Consider stresses induced by differential settlement after con-necting pipe and anticipated future settlement 18-2 Perform final analyses to demonstrate 18-2 5
PS J.
Legette 810131 3
Same as Item 17-5 the margin of acceptability for addi-(800801) tional differential settlement beyond that espected for the !!fe of the plant 10-3 Design piping connecting from the diesel 18-2 5
PS J.
Legette 810131 3
Dependent on 17-5 generator building to the pedestals which (800801) will accommodate the espected future se ttlement 19-1 Profile pipes in the vicinity of diesel 19-1 0
PS J.
Legette 810131 3
Dependent on 17-5 generator building af ter removal of (800801) preload and evaluate as described in the Desponse to Question 17 19-3*
Perform a complete evaluation of safety-19-3 0
PS J.
Lege t te 810131 3
Dependent on Item 18-1 l
related piping af ter completion of the (800801; preload program 20-1 Analytically check the Seismic Category 20-1 5
PS J. Legette 810131 3
Dependent on Item 18-1 I systems affected by settlement for pump (800801) and nossle loadings and verify that they are within specified or vendor-accepted limits 23-2 verify piping support loads for systems 20-1 5
PS J. Lege tte 810131 3
Dependent on Item 18-1 subjected to settlement-induced loads (800801) 20-3 Prepare additional response to the NRC 810131 3
(800801) 20-4 Evaluate active valves af fected by 20-1 5
PS J.
Legette 810131 3
Dependent on Item 18-1 settlement for imposed loads and (800801) reactional compare to the allowable for operability Sheet 7 10/8/80
MIDLAND UNITS 1 AND 3 NASTER LIST Or COMMITMENTS TO NRC ON 10 CrR 50.54(f) RES PONSES (Cont inteed)
PART :: COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
' Description Page Rev Org Engineer Date Status Status Remarks 23-19A* This action modified to include neces-I-18 OC E. Smith 801115 3
To be completed when Item sary revision to QCIs resulting f rom (800901) 23-41 is completed and evaluation of surveillance and review QC Procedure C6.1 is ap-callouts proved by CPCo.
See Item 1-21A 23-20*
Field Instruction 1.100 will be supple-23-18 5
FE 801231 3
Awaiting equipment qualift-mented by establishing requirements for (791204) cation report from geotech-nical services based on demonstrating equipment capability, CPCo NCR including responsibility for equipment approval, and providing records identi-fying this capability.
23-25* Quality assurance will issue a Nuclear 23-18 OA 801017 3
Awaiting issuance of re-Quality Assurance Manual amendment to (800902) maining NOAM procedures clarify the requirement that procedures needed for the CPCo/Bechtel include measures for qualifying equip-QA integration ment under specified conditions.
23-20* Civil /3tructural Design Criteria 7220-23-15 5
CE D.
Reeves 801130 3
Design criteria in CPCo C-501 will be modified to contain the (800831) review requirements that a duct bank.penetra-tion shall be designed to eliminate the possibility of the nonspecific size duct interacting with the structures.
23-30*
Engineering will clarify specifications 23-18 5
CE/rE 801230 3
Dependent on compaction (39) and construction will prepare procedures (800912) report and NQAM (governing the soils compaction equip-ment) to implement the requirements of the Nuclear Quality Assurance Manual as stated in Item 25 23-31*
Design documents, instructions, and pro-I-11, 5
PE C. Russell 801131 3
cedures for those activities requiring 23-20, (801024) inprocess controls will be reviewed to 23-30 assess the adequacy of existing proce-dural controls and technical direction.
Engineering review is scheduled for completion by October 24, 1980.
Sheet 8 10/6/80
MIDLAND UNITS 1 AhD 2 MASTER LIST OP COfetITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM OUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
' Description Page Rev Org Engineer Date Status Status Remarks 23-33*
The quality assurance audit and moni-23-15 5
OA 800912 3
Action completed escept developing audit training tocing program will be revised to empha-program size and increase attention to the need for evaluating policy and procedural adequacy and assessment of product qual-ity.
A specialized audit training pro-gram will be developed and implemented to ensure guidance for this revised approach.
23-34*
Control Decument SF/ PSP G-6.1 will be I-20, 5
OC 301115 3
SF/ PSP G-6.1 has been revised to provide requirements for 23-22, (800915) submitted for review.
See Item 1-23 inspection planning specificity and 23-24 for the utilization of scientific samp-ling rather than percentage sampling.
23-39*
Bngineering will clarify specifications 23-18 5
FE 801231 3
(801017)
(30) and construction will prepare procedures (governing the solls compaction equip-ment) to implement the requirements of the Nuclear Quality Assurance Manual as stated in Item 25.
4 OA 801231 3
See Item 1-4 23-44A* The audit committed to in our response (800901) to Question 1 Part b and described in Part 2, Section 5.0 will be conducted once during the FSAR rereview (com-mencing March 17, 1980) and again after completion of the rereview (com-mencing September 1, 1980).
23-47*
See Item 23-4 23-9, 4
PE 801231 3
23-25 (801031) c;3 26-1.
Analyse the ef fect of differential 26-2 5
CE R. Zao 801031 3
LA) settlement of the diesel generator build-(800930) ar-ing in accordance with ACI 349 as supple-74 mented by Regulatory Guide 1.142 Sheet 9 10/8/80
e MIDLAND UNITS 1 AND 2 MASTER LIST OF COISIITNENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is CONNITttSNTS FNON QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Ites.
Description Page_ Rev Org Engineer _
Date Status Status Remarks 33-1 Fill the diesel fuel oil tanks with oil 33-2 5
CE 810831 3
See Items 4-9 and 6-4 (800829)
Will be accomplished just prior to preoperational testing prior to preoperational testing Sheet 10 10/8/80
4 NIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks 4-7 henove unsuitable material in the tank 4-3 3
GT J. Wanzeck 791130 2
farm and replace by compacted fill S.
Rao 15-1*
Evaluate the dif ferential settlements 15-1 0
CE 791231 2
Superseded by items 26-1 and 26-2.
See Item 14-6 in accordance with provisions of ACI 318-71 for Seismic Category I structures founded partially upon natural soil and partially upon fill material 17-2 If future profiles show any extreme 17-3 0
CE 790901 2
Superseded by Item 17-5 conditions, analyze the piping system and make necessary repairs 19-2 Take additional gap measurements between 19-2 0
CE 2
Closed by Rev 5 embedded sleeves and pipes when surcharge is removed. Coordinate this information with the profile data 23-35* Control Document SP/ PSP G-3.2.
23-33 5
QC 800815 2
See Item 1-24.
PSP G-3. 2 Control of Monconforming Items, is Rev. 6 issued 6/10/80 being revised to improve the definition of implementing require-ments for identifying repetitive non-conforming conditions.
23-44*
FSAR sections are being cereviewed as 23-7, 4
PE 800931 2
See Item 1-2 discussed in the Response to Question 23, 23-11 Part 2.
23-45*
U.S. Testing will be required to demon-I-18, 5
CE 801001 2
Report submitted to QA strate to the cognizant engineering rep-23-27, resentative that testing procedures, 23-31 equipment, and personnel used for quality verification testing (for other than NDE and soils) were, and are, capable of providing accurate test results in accordance with the requirements of applicable design documents.
23-46* A sampling of U.S. Testing's test reports 23-28, 5
Cr 801001 2
Report submitted to QA (for other than MDE and soils) will 23-31 be reviewed by the cognizant engineering representative to ascertain that results evidence conformance to testing require-ments and design document limits.
Sheet 11 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RES PONS ES (Contie:ued) i PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (continued)
Resp Responsible Due Item Gescription Page Rev Org Engineer Date Status Status Remarks 23-48* CPCo will implement overinspection for I-11, 4
C PCo-NA 2
Hi Cogoing activity soils placement, utilizing a specific I-16 OA overinspection plan.
23-49* CPCo will perform overinspection of the I-17 4
C PCo-NA 2
"I Ongoing activity U.S. Testing soils testing activities QA and reports, utilizing a specific over-inspection plan.
23-50* CPCo project management and QA review I-19 4
C PCo-NA 2
08 Ongoing activity field procedures (new and revised) and QA, CPCo OA reviews DCIs (new and revised)
CPCo-in line with Bechtel before release.
PNO 23-51*
In 1970, CPCo implemented an overin-I-19 4
C PCo-NA 2
HI Ongoing activity spection plan to independently verify OA the adequacy of construction and the Bechtel inspection process, with the esception of civil activities.
Rein-forcing steel and embeds were coverel in the overinspection.
23-52*
CPCo reviews onsite subcontractor OA I-19 4
C PCo-NA 2
08 Ongoing activity manuals and covers their work in the OA audit process.
23-53' An ongoing ef fort is improving the "sur-I-19 4
OC NA 2
See Item 23-19A veillance' mode called for in the OCIs by causing more specific accountability as to what characteristics are inspected on what specific hardware and in sor e cases changing " surveillance" to
" inspection."
25-1 novise seismic analysis for diesel
- 25-3 5
CE 2
Tracked by Item 13-6 generator building using the soil properties determined by the recent investigation and any foundation modi-fications 25-2 Revise seismic analysis for auxiliary 25-3 5
CE 2
Tracked by Item 13-16 building using the soil properties deter-mined by the recent investigation and any foundation modifications "I Bechtel verification of this item is not required.
Sheet 12 10/8/80
MIDLAND UNITS 1 A%D 2 IIASTER LIST OF CofWIITMDtTS TO NRC ON 10 CPR 50.54(f) RESPONSES (Continued)
PART 1: C008t!19 TENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page g 3 Engineer Date Status Status Remarks 26-2 Incorporate in the Midland project 26-1 5
CE 2
Tracked by Item 15-2 standard design criteria the ef fect of dif ferential settlement of structures which are founded partially or totally on fill 27-1 Prohibit final piping connection to the Fig 5
PD R. Tulloch 800731 2
diesel generator building before 27-9 12/31/81 31-1 Perform full-scale load test by filling 31-2 5
GT 801130 2
Tracked by Item 4-8 CE the Bef8T with water Sheet 13 10/8/80 I,
MIDLAND UNITS I AND 3 NASTER LIST OF COMMITMENTS TO NRC ON 10 CFP 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS I to 35 (Continued)
Resp Responsible Due Item
, Description Page Rev Org Engineer Date Status Status Remarks 1-1*
Perform a final review and update of 1-3 1
LS 800101 1
IPSAR commitment list 1-2*
Review sections of the FSAR determined to 1-4 1
LS 800101 1
Superseded by Item 23-44 be inactive 1-3*
Review EDP 4.22 1-4 0
CE 790629 1
1-4 Audit action items 1-3 1-4 0
OA 831101 1
Superseded by Item 23-44A 1-6*
Complete review of the Domes and Moore I-6 GT 790629 1
report 1-7*
Complete review of pertinent portions of I-6 GT,CE 790629 1
PSAR Sections 2.5 and 3.8 1-8 Correct settlement calculations I-6 GT 791101 1
')
1-9 Schedule audits of the geotech sections I-7 OA 790504 1
on a 6-month basis 1-10*
Review drawings for possible effect of I-7 CE 790106 1
vertical duct bank restrictions I'
1-11*
Complete actions in respones to DRVCL I-7/8 QC 790518 1
audit 1-12*
Revise EDP 4-49 to incorporate clarifi-I-8 QE 790504 1
See Item 23-4 cations and instructions for use of SCN 1-13 Schedule audits of each design disci-I-8/9 QA 790504 1
pline calculations on a yearly basis 1-14 Reevaluate construction equipment used 1-11 FE 791204 1
See Item 23-20 for compaction 1-15 Assign field soils engineer and so!!s I-11 FE 790501 1
engineer Lrom design section 1-16*
Review construction specifications and I-11 FE 790529 1
See item 23-8 procedures to identify equipment requiring qualification 1-17*
Review field procedure FPG-3.00 to ensure I-11 FE 790531 1
See Item 23-7A 1
clarity and completeness l
Sheet 14 10/8/80 i
MIOLAND UNITS 1 AND 2 MASTER LIST OF COOM11MENTS TO NRC ON 10 CFR 50.54(f) RESPONSES Kontinued)
COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
PART In l
Resp Responsibt?
Due Item bescription Page Rev Org Engineer Date Status Status Remarks 1-18 movise POCI C-1.02 to provide inspection I-16 OC 800801 1
rather than surveillance and to record inJpections 1-20*
Perform in-depth audit of U.S. Testing 1-18 OA 790531 1
See item 23-15 l
1-21*
neview all active QCIs for surveillance I-18 CC 790629 1
See Item 23-19 callouts
[
1-22*
Evaluate documentation (review) call-I-18 1
OC 790629 1
Superseded by Item 23-19 f
outs on OCIs I-22 OA 790601 1
See Items 23-18, 23-35, 1-24*
Complete in-depth review of the Bechtel and 23-36 trend program I-22 QA 790601 1
Superseded by Items 23-16 1-25*
Conduct 04 training and 23-17 3-1 0
LS 790531 1
3-1*
Clarify the Response to Question 362.12 in FSAR Revision 18 4-1*
Provide criteria for permissible residual 4-1 3
GT 791231 1
CE settlement 4-2*
Provide details of treatment of loose 4-2 0
GT 790831 1
CE sands 4-3 3
GT 791031 1
4-3 Tske dynamic modular weasurements upon removal of preloads for diesel generator building and other buildings 4-4 Use data of Item 4-3 to evaluate the 4-3 3
CE 791130 1
Partial Requirement of Items 13-6, 13-11, 13-16 seismic response of the structures NA CE 790831 1
4-5 Prepare additional response to NRC for Items 4-1 and 4-2 C
4-9 Fill the diesel fuel oil tank with water 4-2 0
GT 1
See Item 5-4 y
to perform a full-scale test of the 4,
foundation soli 5-1 Monitor the settlement of the structures 5-1 0
GT 1
Ongoing activlif, require-ments in Dwg C-994, (which were subjected to preload) during Spec C-76 the life of the plant to provide a record of performance Sheet 15 10/8/80
I 1'
l l
MIDLAND UNITS 1 AND 2 l
MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR SO.54(f) RCSPONSES (Continued)
PART Is COMMITMENTS FROM OUESTIONS 1 to 35 (Centinued) f Resp Responsible Due Item.
- Description Page_ Rev Org Engineer Date Status Status Remarks 6-1 Construct.and fill the borated water tank 6-1 0
GT 1
Tracked by Item 4-8 to make a full-scale test of the founda-CE tion soils 6-2 Delay the piping connections to the BWST 6-1 0
I until most of the settlement has taken place under the test load 6-3 Use settlement data from BWST to allow 0
NA 1
Tracked by Item 4-8 conservative piping connection design 6-4 Evaluate the load test result of the 6-2 0
GT 1
Sem Item 4-9 diesel fuel oil tank and provide precise corrective measures !E required 6-7 memove all unsuitable material in the 6-1 3
GT 1
Tracked by Item 4-7 tank farm area and replace with suitable compacted fill 6-8 Monitor the non-Beismic Category I con-6-2 3
GT 1
Tracked by Item t-6 densate storage tanks 7-1*
Perform continuity check on duct banks 7-3 3
FE 791130 1
af ter completion of preload program 8-1 Establish a requiremsat to realign diesel 8-2 0
CE 800304 1
Requirement shown in generators if manuf acturer's tolerance Dwg C-10ll, Note 4 for pitch and roll are exceeded 8-2 Monitor the diesel generator pedestal 8-2 0
CE NA 1
Ongoing activity.
markers on a 60-day cycle throughout the Requirements in Dwg C-994 construction phase.
and Spec L-76.
Included in Item 5-1 12-1 Complete one additional boring in the 12-1 0
GT 790423 1
middle of diesel fuel oil tank area 12-2 Cosplete three additional borings in the 12-1 0
GT 790531 1
auxiliary building control tower area 12-3 Complete Table 12-1 for soils investi-Tb1 1
CE 790531 1
gation and planned remedial measures 12-1 respond to NRC 12-4 provide supporting soll conj 1 tion for Tb1 0
CE 790531 1
Seismic Category I utilities.
12-1 1
Sheet 16 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITNENTS TO NRC ON 10 CFR 50.54(f) RES PONSCS (Continued)
PART It COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Resporis ible Due
_Itey_
- cescription Page Rev Org Engineer Date Status Status Remarks 12-6 Provide a detailed description of Tb1 1
CE 790639 1
planned corrective actions in Interim l'-1 Report.6 of MCAR 24 12-7
' Perform a continuity check on one con-Tb1 1
FC 800630 1
See Item 7-1.
Ongoing duit in each duct bank made with a hard-12-1 activity. See field pro-fiber rabbit prior to cable pulling Pg 4 cedure FIE 4.500 12-0~
Neasure the gape between embedded Tb1 3
CE 1
sleeves and pipes entering the service 12-1 water valve pits when the surcharge Pg 5 is removed 13-1 Complete seismic reanalysis of diesel 13-1 0
CE 791031 1
Superseded by Items 13-6 and 13-7 generator building to account for current lack of compaction 13-2 Review diesel generator building design 13-CE 791231 1
Superseded by Items 13-8 and Seismic Category I equipment piping, through 13-10 and electrical systems to the enveloped seismic responses 13-3A conduct a seismic reanalysis to account 13-2 0
CE 791231 1
Superseded by Items 13-11 for revised soil structure interaction through 13-15 of mereice water pump structure 13-3B Review structural design and Seismic 13-2 0
CE 791231 1
Superseded by items 13-11 Category I equipment, piping, and through 13-15 e;ectrical systems and incorporate the seismic responses of the reanalysis for the service water pump structure 13-4A If significant change of foundation CE 791231 1
Supersedad by Items 13-16 properties of the musillary building through 13-20 result, conduct a seismic reanalysis 13-48 Review structural design and Seismic CE 791231 1
Superseded by Items 13-16 Category I equipment, piping, and through 13-20 electrical systems and incorporate the seismic response of the reanalysis for the auxiliary building Sheet 17 10/8/80
l MIDLAND UNITS 1 AND 2 MASTER LIST OF C0petITMENTS TO NRC ON 10 CFR 50.54(f) RESPONGES (Continued)
PART Is COfW4ITNENTS FROM OUESTIONS 1 to 35 (Continued) l Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks
(
791231 1
Superseded by Item 13-21 13-5 Underground utilities - Investigate the change in dif ferential dirplace-ment separately for buildings founded on till pending results of seismic reanalysis 14-1 haview the estimated settlement upon 14-1 5
GT 810131 1
Tracked by Item 4-8 completion of the loaa. test program of the BWST 14-2 Analyse flexible buildings for differ-14-2 0
CE 1
Supecseded by Item 26-1.
See item 14-6 ential settlement based on stiffness at the time of distortion. Evaluate forces dua to arching or distortion according to Question 15 14-3*
Map significant cracks in aux.111ary 14-3 0
CE 790630 1
building, feedwater isolation valve pits, and ring foundation for the BWSTs 14-4*
Analyse buildings affected by differ-14-4 0
CE 790831 1
Saperseded by Item 26-1.
See Items 14-2 and 14-6 ential settlement for observed dif fer-ential settlement plus predicted differential settlement 14-5 Prepare additional response to the NRC 14-CE 790831 1
14-6*
Analyse the diesel generator building 14-2 3
CE 791231 1
for variable foundation properties by finite element model 16-1*
perform soil borings in areas of buried 16-1 0
GT 790831 1
Deleted in Rev 5. Require-ment to perform borings is pipes in Dwg C-1146 17-18 Evaluate impact of the failure of buried 17-1 0
cc 790629 1
Deleted in Rev 2. Evalua-tion was not requested by non-Seismic Category I piping on safety-NRC.
related structures, foundations, and equipment 790629 1
17-3 Prepare additional response to the NRC Sheet 18 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks 23-1*
Consultant reports other than Dames &
I-8 4
PE 790518 1
Moore were considered in accordance with 23-7 the guidelines provided in NRC Regula-tory Guide 1.70, Revision 2.
Consul-tant reports were not attached to the FSAR, but portions of consultant reports were estracted and incorporated into the FSAR tout itself. Those portions incorporated into the FSAN becoma commitments. %erefore, dispositiou of recommendations in consulting reports has been adequately accounted for in the preparation of the FSAR.
Verification that those portions of consultant reporte determined to be commitments and incorporated into the FSAR have been adequately reflected d
in project design documents is being accomplished via the FSAR rereview progros described in the response d
to Question 23, Part 2.
The two Bechtel QA audit findings reported in our April 24, 1979, re-sponse (Paragraph D.1, Page I-8) have been closed.
23-2*
On April 3, 1979, Midland project 23-8, 4
PE 790312 1
engineering group supervisors in all 23-24 disciplines were reinstructed that the only procedurally correct methods of implementing specification changes are through the use of specification revisions or specification change notices. This was followed by an C:3 interoffice memorandum from the project engineer to all engineering group supervisors on April 12, 1979.
y 23-3*
Rngineering Department Project Instruc-I-8, 4
PE 1
PN) tion 4.49.1 was revised in Revision 2 23-9, to state, "Under no circumstances will 23-24
-interoffice memoranda, memoranda, teleues, TWXs, etc be used to change the requirements of a specification."
She e t 19 10/8/80
M2DLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks 23-48 A review of interoffice memorande, memo-23-5, 4
PE 1
renda, teleses, TWXs, and other corres-23-9 pondence relating to specifications for construction and selected procurements of Q-listed items will be initiated.
The purpose of the review will be to identify any clarifications which might reasonably have been interpreted as modifying a specification requirement and for which the specification itself was not formally changed. An evaluation will be made to determine the effect on the technical acceptability, safety implications of the potential specifica-tion modification, and any work that has been or may be affected. If it is determine 1 that the interpretation may have affected any completed work or future work, a formal change will be issued and remedial action necessary
- for product quality will be taken in accordance with approved procedures.
-The foregoing procedure will be followed for all specifications applying to construction of Q-listed items.
For specifications concerning the procurement of Q-listed items, the fore-going procedure will be implemented on a random sampling basis. The sample size has been established and the specifi-cation selection has been made.
(21) noview and acceptance criteria for the specifications will be defined by March 14, 1980.
(47)
The review of construction and selected procurement specifications is echeduled to be completed by October 1980.
i 4
Sheet 20 10/8/80 i
MIDLAND UNITS 1 AND 2 MASTER LIST OF COIMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued) s PART I: COMMITMENTS FROM OUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks If the acceptance criteria are not met, the review will be expanded to include other specifications for 0-11sted items.
At that time, a revised completion date will be established.
23-5*
A study was completed which examined 23-11 5
800131 1
current procedures and practices for the preparation and control of the FSAR in view of these experiences.
Pro-cedural changes will be initiated by the revision of or addition to the engineering department procedures. This action is scheduled to be completed by January 31, 1989.
23-6*
An interoffice memorandum dated April 12, 23-13 4
GT 790312 1
1979, was issued by geotechnical services to alert personnel of the need to revise or annotate calculations to reflect current design status.
23-7*
Field Instruction FIC 1.100, 0-11sted 1-11, FE 1
Soils Placement Job Responsibilities 23-18, Matrix, has been prepared and estab-21-20, lishes responsibilities for performing 23-30 soils placement and compaction.
23-7A*
Review Field Procedure FPG 3.000 to I-11 FE 1
See Item 1-17 ensure clarity and completeness 23-4*
Construction specifications, instruc-I-11, 5
FE 1
See Item 1-16 tions, and procedures were reviewed 23-18 to identify any other equipment requiring qualification which had not yet been CD quellfied. No such equipment was identified.
I 23-9*
A dimensional tolerance study was com-I-8 4
PE 1
4" pleted using the reactor building spray es) pump and ancillary system as the study mechanism.
23-10*
Engineering reviewed specifications not I-8 1
See Item 1-5 previously reviewed for the specificity or tolerance studies.
Sheet 21 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COISIITMENTS TO NRC ON 10 CFR 50.54(f) RF.SPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Description Page Rev Org Engineer Date Status Status Remarks Item 23-11*
A specific review of the FSAR and spect-I-8 1
fication requirementa for the qualifi-cation of electrical and mechanical com-ponents has been made as part of the corrective action relating to CPCo's 50.55(e) report on component qualifi-cation.
23-12*
Quality assurance will schedule yearly I-8 1
audits of the design calculational pro-L cess for techniques and actual analysis in each of the design disciplines.
23-13*
Audits of ITT Grinnell hanger design and I-8 QA 1
See Item 1-13 CPCo relay setting calculation have been conducted.
23-14*
Bechtel project engineering will review I-7 1
design drawings for cases where ducts penetrate vertically through foundations.
The possibility of the duct being en-larged over the design requirements and the effect this enlargement may have upon the structure's behavior will be evaluated by June 1, 1979. Proper remedial measures will be taken if the investiga-tion shows potential problems.
23-15* An in-depth audit of U.S. Testing opera-I-18 QA 1
See Item 1-20 tions, covering testing and implementa-tion of its QA program, will be con-ducted in late April or early May 1979, by Bechtel project QA and engineering.
23-16*
An in-depth training session will be 1-22 4
QA 791130 1
See Items 1-25 and 23-17 given to Midland QA engineers covering the settlement problem and methods to identify similar conditions in the future.
23-17* An in-depth training session will be I-22 4
QA 800229 1
See Item 1-25 and 23-16 given to all CPCo and Bechtel QA engi-neers and auditors to increase their awareness of the settlement problem and discuss auditing and monitoring tech-niques to increase audit ef fectiveness.
Sheet 22 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF CC8WIITNE9FFS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
Resp Responsible Due Item
' Description Page Rev Org Engineer Date Status Status Remarks 23-1S*
An in-depth review of the Bechtel trend I-22 4
QA 1
See Item 1-24 program data will be undertaken by Bechtel OA management to assure the identification of any other similar areas that were not analysed in suf fi-cient depth in the past reviews.
23-19*
Quality control instructions will be I-18 4
Oc 1
See Items 1-21 and 1-22 evaluated to ensure that the documen-tation characteristics which are to be inspected (i.e., surveillance and review callouts) are clearly specified.
23-21* See Item 23-4 5
FE 800314 1
23-22*
Guidelines for surveillance of testing 23-27 5
GT 791130 1
operations will be developed and included in field instructions for the onsite soils engineer. Engineering /geotechnical services will develop the guidelines by November 30, 1979.
23-23*
Engineering will revise Engineering 23-7, 5
PE 791130 1
Department Procedure 4.22 by December 1, 23-46 1979, to clarify that engineering person-nel preparing the FSAR will follow the requirements of Regulatory Guide 1.70, Revision 2, Standard Format and Content C) of Safety Analysis Reports for Nuclear Power Plants (September 1975). Speci-EA3 fically, Regulatory Guide 1.70 (Pages iv d"
and v of the Introduction) requires that such consultant reports only be refer-es) enced with the applicable commitments and supporting information included in the test (third paragraph, Page v).
.Suc:a a requirement would preclude repe-tition of this circumstance.
23-24* To preclude any future inconsistencies 23-11 5
PE 791130 1
between the FSAR and specifications, Engineering Department Project Instruc-tion 4.1.1 will be revised to state that all specification changes, rather than just " major changes,* will be reviewed for consistency with the FSAA.
Sheet 23 1
10/8/90 i
1
MIDLAND UNITS i AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
COMMITMENTS FROM QUESTIONS 1 to 35 (Continued)
PART I Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks 23-26*
In view of Item 6, geotechnical 23-13 5
GT udO328 1
services will revise Procedure FP-6437 by December 31, 1979, to require that calculations be annotated to reflect cur-rent design status.
23-13 5
OA
^!a227 1
23-27*
Engineering Department Procedure 4.37 will also be revised by December 31, 1979, to require that calculations be annotated to reflect current design status.
23-29* The civil standard detail drawings will 23-15 5
CE 791231 1
Shown in Dwg C-141 be revised to include a detail showing horisontal and vertical clearance re-guirements for duct bank penetrations.
The detail will address any mud mat re-strictions.
23-32*
Guidelines for surveillance of testing 23-27 5
FR 800229 i
operations will be developed and included in field instructions for the onsite soils e g ineer. Engineering /geotechni-cal services will develop the guidelines by November 30, 1979, and field engi-neering will prepare the instructions by February 29, 1980.
23-36*
Control Document OADP C-101, Project 23-33 5
OA 800124 1
See Item 1-24 Quality Assurance Trend Analysis, is beang revised to improve the defini-tion of implementing requirements for identifying repetitive nonconforming conditions.
23-11 5
LS 791130 1
23-30*
A study was completed by October 31, 1979, to esamine current procedures and practices for the preparation and control of the FSAR in view of these experiences. Procedural changes will be initiated by the revision of or addition to the engineering department procedures.
Sheet 24 10/8/80
MIDLAND UNITS i AND 3 NASTER LIST OF CONNITNENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART Is CONNI1918NTS FRON QUESTIONS 1 to 35 (Continued) i Resp Responsible Due Ites
' Description Page M
Org Engineer Date Status Status Remarks 2-0 No Action Item 9-0 No Action Iten NA 10-0 No Action Item NA 11-0 No Action Ites NA 21-0 No Action Item 22-0 No Action Item 28-0 No Action Item 29-0 No Action Item 30-0 No Act!On Item 32-0 No Action Item 34-0 No Action Item 35-0 No Action Item 4
Sheet 25 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMEstTS TO NRC ON 10 CFR 50.54(f) RES PONSES (Continued)
- PART II: COMMITMENTS FROM SUPPLEMENTARY QUESTIONS Resp Responsible Due Item
- Description Page Rev Org Engineer Date Status Status Remarks S-6 Continue involvement of CPCo/Bechtel B
5 consultants for reviewing remedial actions i
_S-7
' Monitor service water pump structure B
GT 5
and pile displacement during jacking CE B. McConnel operation to verify pile dynamic stiff-ness uset in seismic analysis 4
i Sheet 26 10/8/80
MIDLAND UNITS 1 AND 2 MASTER LIST OF COMMITMENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Cantinued)
FART II: COMMITMENTS FROM SUPPLEMENTARY QUESTIONS Resp Responsible Due Item
'bescription Page Rev Org Engineer Date Status Status Remarke 8-1 Advise hechtel to commence dewatering A
CPCo 4
After favorable SER and underpinning activities S-2 Develop settlement time rate criteria A
GT 810331 4
for all Seismic Category I structurer S-3 Nonitor concrete cracks for service weter B CE 801031 4
Due date is for incorpora-pump structure and auxiliary building ting requirement into drav-electrical penetration areas and the ing foodwater isolation valve pits before and after installation of piles and caissons Sheet 27 10/8/80 l
NIDLAND UNITS 1 AOD 2 MASTER LIST OF COIGIITNENTS TO NRC ON 10 CFR 50.54(f) RESPONSES (Continued)
PART II: COIGIITNENTS FROM SUPPLENENTARY OUESTIONS Resp Responsible Due i
Item
' Description Page Rev Org Engineer Date Status Status Remarks S-4 Monitor concrete cracks in the BNST B
CE 800630 2
Due date is for incor-valve pits and repair any observed crack porating requirement into escoeding the ACI code limits drawing. Dwg C-1148 has been issued.
5-5 Grout the local gaps between olesel B
CE 800407 2
Crouting requirement in generator building footing and mud mat Dwg C-1147 S-8 Snvelope pile stiffness for the seismic 8
CE B. McConnel 2
Completed seismic model.
analysis of service water pump structure See Item 13-11.
B-9 Check the limited clearance between the B
PD R. Tulloch 800731 2
See Response to Ques-service water pipe at the building CE tion 45 penetration CD C.a) 4:~
N 4
1 Sheet 28 10/8/80 s.
.. - -