ML20127B947

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Issue C to Procedure QCIP-5, Control of Concrete Mixing & Transporting
ML20127B947
Person / Time
Site: Waterford Entergy icon.png
Issue date: 02/27/1976
From: Howard F
EBASCO SERVICES, INC.
To:
Shared Package
ML17198A241 List: ... further results
References
FOIA-84-455 QCIP-5, NUDOCS 8506220098
Download: ML20127B947 (11)
v • d • e


Text

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j; EBASCO SERV 2CES INCORPORATED

, M WATERFORD STEAM E2.ECTRIC STATION - UNIT N? 1 PROCEDURE FOR: CONTROL OF CONCRETE MIXING PROC. NO QCIP-5 AND TRANSPORTING w

ISSUE

SUMMARY

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w ISSUE /DATE PR EPA?.ED APPROVED RDtARKS

" A" 1-5 -73 C Satterfield h

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U "B" DRAFT h&)a C Satterfia* A, d 8-22-75 *

.g. g g B/9-9 75 C Satterf id J. O. Booth i,a '

  • Fin 41'izes preliminary QC 4.0-3, D

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Concrete Mixing & Transporta-tien. Also, supersedes

.N QC 4.0-6, Concrete Aggregate

  • Processing and Concrete Mixing Plants, and QC 4.0-8*, Concrete Back up Plant.

8 "C" Draft F. R. Howar Revised to conform with m 1-23-76 other QCIP's.

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ACT REQUEST f q -vsr

, FORM No. E-1 (3 3-72)

EBASCO SERVICES INCORPORATED .

NO. QCIP-5 i "C"

,, ISSUE: VATERFORD STEAM ELECTRIC STATION - UNIT NO 3 4 PACE: 1 0F t.

C 1.0 PURPOSE i

1.1 The purpose of this procedure is to record the certification of equipment and the mixing and transportation of concrete.

2.0 SCOPE C

N 2.1 This procedure covers the req'uirements for inspection of the concrete 4

batching and mixing plants, certification of batch planc equipment, in process inspection of plant operation, mixing of concrete,

, transportation of concrete from the off-site location of the mixing plant or batch plant to the site of the placement.

. 5

3.0 REFERENCES

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[ C 3.1 Ebasco Specification LOU-1564.472, Concrete Masonry 5 3.2 i,SI N45.2.3-1,74, Su,,1e.entary Quality Assurance R.quir ne.

g for Installation Inspection, a'd nTesting of Structural Concrete and Structural Steel During the Construction Phase of Nuclear Power Plants.

m:

u 3.3 National Ready Mix Concrete Association (NRMCA)  !

j 3.3.1 Certification of Ready Mixed Concrite Production Facilities m  !

[ g 3.3.2 Measuring the Uniformity of Concrete Produced in Truck l Mixer i

E f 4.0 DEFINITIONS 1 None '

8 m 5.0 RESPONSIBILITY l

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" C 5.1 The Quality control Civil Supervisor is responsible for the -

j 5 inspection and recording of the results of the inspection of the

, g material and equipasnt which are covered in this procedur...

3 .

l g 5.2 The Quality control Civil Inspector shall report to the Quality g Control Civil Supervisor and be directly responsible for enforcing.

M and implementing this procedure and making those reports required.

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5.3 The Testing Laboratory Technician shall perform testing and reporting of concrete materials.

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, 6.0 PROCEDURE ,

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C 6.1 Concrete Plant Inspection 6.1.1 The QC Civil Inspector shall perform daily correlation check '

between scale dial readings and remote readouts at control console., Results are to be documented in_ batch plant log. ,

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% 7 . EBASCO SERVICES INCORPORATED . 10 0 . QCIP-5 ISSUE:- "C" . WATERFORD STEAM ELECTRIC STATION - UNIT NO 3 PACE: *2 0F 4 l 6.1.2 The QC Civil Inspector shall maintain a los of daily plant  !

l operation including time which batching started and finished.

t 6.1.3 The QC Civil Inspector shall maintain continuous surveillance

of batch plant operation until relieved by another QC

. Civil Inspector. Change of inspectors shall be documented 1 -

in batch plant log.

a 6.1.4 During the batching operation the QC Civil Inspector shall:

) -

l ha 6.1.4.1 Periodically check scale remote read out for sero 3

l reading prior to the weighing of a batch.

I 6.1.4.2 Periodically check batch selector to assure that l

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. proper six is being batched.

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) l 6.1.4.3 Periodically check moisture meter reading to verify ,

i proper moisture and aggregate weight compensation.

E 6.1.4.4 Periodically witness the weighing of cement, sand, fl stone, water, and measurement of adinixtures to assure j , that weights are within the specified limits.

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! j 6.1.4.5 Periodically check recording ticket for confirmation

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of batch weights. If the automatic batch printer i breaks down.the batch plant operator will fill out the  ;

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ticket manually using the actual weights read from the remote readout. The QC Civil Inspector shall not fill

! out the tick'et but shall only verify that the weights  :

I g are within tolerance and sign the ticket.

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g 6.1.4.6 Periodically verify that the truck ticket has the

, , batch time stamped on it.

I h 6.2 Mixing and Transporting squipment -

! u l C 6.2.1 The QC Civil Inspector shall before each start-up of *

{ g concrete, examine ahd evaluate all truck miners and agitator units used to deliver concrete for conformance with the following procedures and record on Form No. ,

QCIP-5-3 and Form No. QCIP-5-4 6.2.1.1 Daily Inspection 6 j Interior condition satisfactory

No appreciable accumulation of hardened concrete ,

bladse free of excessive wear charging and discharging l

! openings and chute in good condition Free from

! appreciable accumulations of cement or concrete j

hopper and chute surfaces clean and smooth. Equipped ,

with a counter in working condition to indicate I

the number of total revolutions and mixing revolutions of drum. Results shall be recorded on Form No. QCIP-5-3 and QCIP-5-4.

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. . .' 7 . ESASCO SERVICES INCORPONATED . QCIP-5

!, ISSUE: "C" . WATERFORD STEAM ELECTRIC STATION - UNIT NO 3 PACE: 3 0F 4 6.2.1.2 Six Month Inspection l

Blade wear shall be checked at the point of maximum i drum diameter nearest to the drum head. When the l height of the blade at this point, measured from the

drum shell, is less than 90 percent of the original height (See NRMCA " Certification of Ready Mixed Concrete Production Facilities" Checklist, for sketch

! of different type blades giving "X" dimension for the 1

original radial height), the blade is considered excessively worn. All dialy inspection procedures i shall also be done at this time. Results shall be '

h" recorded on Form No. QCIP-5-4. ,

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i h 6.2.1.3 Drum or container of such size that the rating as a ,

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mixer (in volume of concrete) does not exceed 63 percent of the gross volume of the mixer disregarding

! h" blades. Gross volume computed according to NRMCA.

! This check is done once, first time on site. If unit

! O has rating plate of " Truck Mixer Manufacturer's i j Bureau", it is not necessary to check.

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6.2.1.4 Provided with a plate showing mixer manufacturer's '

S recommended operating speed for mixing. .

I, E j g 6.3 Documentation ,

h C 6.3.1 The main and back up plants shall be certified according

) g to National Ready Nix Concrete Association by an independent j registered engineer and shall be maintained in the file as permanent record. Plant shall be recertified every 2 years.

{ 6.3.2 A ticket shall accompany each truck load of concrete with a

! ,,, unique nseber which shall identify the batch for any future reference.

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4 6.3.3 Each truck used on the project shall be marked in such a way i I

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as to be identifikble by the Engineer's inspector fros a '

p. distance, and a list of the identification marks cross listed 4 to truck chassis serial number shall be provided.

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6.3.4 Batch Plant Los - Los as referred to in this procedure is i a continuous record of events maintained in book form with not j -

more than one day of events per page.

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. 6.3.5 Concrete mixers or agitators used in transportation of production

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concrete shall be inspected daily prior to use and resulte

{ recorded on Form No. QCIP-5-3 and QCIF-$-4. .

I 6.3.6 The uniformity of concrete produced in truck mixers shall be l l verified every 6 months and recorded on Form No. QCIF-3-1

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. EBASCO SERVICES INCORPORATED . . QCIP-5 ISSUE: "C"' WATERFORD STEMI ELECTRIC STATION - UNIT NO 3 PACE: 4 Or a

.6.3.7 Scale calibration shall '>e made every 90 days or at the Quality Control Civil Su.servisor's direction, by a licensed scale calibrating company using weights certified to be trace-albe to the National Bureau of Standards. Scales shall have a repeatability accuracy, on three successive tests, of one i quarter of the total allowable accuracy limit of the material for which the scales are used. Results shall be recorded on Form No. QCIP-5-2. .

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7.0 ATTACHMENTS

, 7.1 Forms

  • QCIP-5-1 Heasuring the Uniformity of Con-E crete Produced in Truck Mixers Filled out by Lab. Tech.

g QCIP-5-2 Batch Plant Scale Calibration Filled out by Lab. Tech.

, QCIP-5-3 Concrete Equipment Clearance Filled out by QC Inspector

> QCIP-5-4 Concrete Transporter Record Filled out by QC Inspector i

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WATERFORD STEAM ELECTRIC STATION 1980 - 1163 W INSTALLATION - UNIT NO 3 MEASURING THE UNITORMITY Of .

CX)NCRETE PRODUCED IN TRUCK MIXERS ASIM C-94-74 i

Truck c: Mixer No RPM No of Revolutions ..

' Air Ten; trature Sampla semple variation Limits No I No 2 Between 1 and 2 f

Teseperat re of concrete Slump (I erage of 2 per sample) g,,,

g gg , g, 4 Unic Wei .ht 1.3" if avg'. slump is 4 to 6"

! Air Coat at 1 percent Air free unit weight of mortar 1.6% of avs of samples Air free unit weight of concrete 1 lb per cubic ft-et Coarse a gregate 6% by weight of toncrete Compress ve strength (Average 3 cylinders) , 7.3% of avs of each age.

F;rsaula or calculating air-free unit weights:

M= b 7 M = lb/ft3 (unit wt of air free mortar) 100 G x 62.4 C = lb/ft3 (unit wt of air free concrete)

C = _ b b = lbe (vt of concrete sample in unit vt container)

  • ( I.JLA) c=kbs(SSDwtofaggon#4 screen) 100 1 V = ft3 (volume of unit vt test container)

A = % (air content of concrete)

C'= sp gravity of coarse aggregate F = % retained on No 4 sieve Percenta of coarse aggregate F' 1. x 100 b

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WATERFCRD STEAM ELECTRIC STATION 1980 - 1165 NW INSTALLATION - UNIT NO 3 QUALITY CONTIt0L CONCRETE MUIPMEh"I CLEARANCE Datet laspectort Goodition of Condition Minor or Openings, Eopper Mixer Revolution g

Anitator No and Chute Clean Blades Counter Workinn ni... -

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Form No QCIF-5-3 (1-23-76) r

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CONCRETE TRANSPORTER RECORD l TRUCK NO. TRANSIT MIXER NO. AGITATOR NO.

R.RM REQ'D REV. RE0'D AT MIXING' SPEED DATE C ECK APPROVED REASON DISAPPROVED INSPECTOR P VED Note: See Reverse Side For Levet of Cneck.

(N.ns .a e vcase sw or F. m No. QCIF-5-9.

Level I check: First time on site and periodically thereaf ter.

Level Il check: Each day prior to commencement of mixing concrete.

Level I check:

  • Rating as mixer, volume of concrete does not exceed 637. of gross volume of mixer.
  • Rating as agitator, volume of concrete does not -

exceed 807. of gross volume of mixer. '

    • Check efficiency of mixer and establish RPM necessary.

Blades free of excessive wear. Plus all level Il checks.

Level II check: Check RPM established for this mixer. No appreciable  ;

accumulation of hardened concrete at charging and di'scharge openings and chute in good condition. Hopper

.and chute surfaces clean and smooth. Revolution counter working. -

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  • Check once, first time on site. If unit has rating plate .of " Truck Mixer Manufacturers Bureau", it is not necessary to check.
    • Check first time on site and enter on other side of card.

Level I check each 6 months or more frequent if required.

  • _ _ . ,
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