ML20137H275

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Rev 3 to Procedure QI-QP-11.0-5, Insp of Concrete Repair
ML20137H275
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 12/13/1982
From: Williams H
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML17198A292 List: ... further results
References
FOIA-85-59 QI-QP-11.0-5, NUDOCS 8512020355
Download: ML20137H275 (7)
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PAGE TEXAS UTtuTIES GENERATING CO.

REVISICN g

LJ CPSES QI-QP-11.0-5 3

. DEC 13 1982 1 of 7 PREPAREDBY:/

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1.0 REFERNECES 1-A Specification 2323-55-9, " Concrete"

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1-B 35-1195-CCP-12

" Concrete Finishing, Finishing and Preparation of Construction Joints" 2.0 GENERAL FOR MORMai!DN ON.Y PURPOSE Af40 SCOPE O

v To describe the method for QC inspection of repa i rs to concrete surface defects and defective concrete to ensure compliance with Reference 1-A.

2.2 DEFINITIONS f

2.2.1 Concrete Surface Defects Surface defects shall be defined as minor air pockets, tie holes, honeycombing, sand str.eaking and, where subsequent coatings are to be applied, from fins and protrusions.

2.2.2 Defective Concrete Surface defects shall be considered defective when, during l

l removal to sound concrete, reinforcing steel is exposed.

l 3.0

!!1STRUCT10N 3.1 VISUAL CHECK 0F CONCRETE SURFACES a.

Immediately upon fonn removal, the QC Inspector shall visually inspect the concrete surface for defects as defined in Paragrpah 2.2.

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HISTORICAL FILE

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'f-INSTRUCTION ISSUE l

RNSION PAGE NUMBER DATE

- TEXAS UTILITIES GENERATING CO.

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CPSES U

QI-QP-11.0-5 3

DEC 13 1982 2 of 7 b.

If surface defects are noted, the QC Inspector shall verbally notify B&R Construction to repair the defect in accordance with existing procedures, c.

If defective concrete is noted upon removal, or reba r is exposed after chipping to sound concrete for surface repairs, it shall be documented by the QC Inspector on the Defective Concrete Report (Figure

1) or a Nonconformance Report.

The NCR will be issued when requiring engineering evaluation prior to doing any chipping to the defective area.

3.2 INVESTIGATION OF DEFECTIVE CONCRETE a.

The QC Inspector shall submit the Defective Concrete Report (Figure 1) to the Civil Inspectior. Supervisor /

Designee for review and investigation of the defect.

b.

If the defect is of a unique nature, it will be so

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noted by the Civil Inspection Supervisor / Designee in the dispos.1 tion portion of Figure 1.

The cognizant QC Inspector will then issue a.Nonconformance Report c.

If the defect is routine in nature, the Civil Inspection Supervisor / Designee will denote in the disposition portion of Figure 1, the applicable sections of Reference 1-B to be used for the repair work.

3.3 DEFECTIVE CONCRETE REPAIR PROCEDURE For repairs indicated to be unique in nature on th-Defective Concrete Report (Figure 1), B&R Construction wi's e 9blish a

repair procedure (disposition) in response the Nonconformance Repo rt and submit to the TUSI Resident Manager for review and approval.

3.4 INSPECTION 3.4.1 Defective Concrete Repairs The Civil Inspection Supervisor / Designee shall review the approved defective concrete repair procedure and direct the cognizant QC Inspector to prepare a checklist on the Inspection Report (Figure 2), to ensure compliance with the approved procedure.

The following inspection items m

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will be verified:

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4 INSTRUCTION ISSUE REVISION PAGE NUM8ER DATE l

TEXAS UTILITIES GENERATING CO.

i CPSES QI-QP-11.0-5 3

DEC 13 1992 3 of 7 l

f a.

Reference to approved repair procedure b.

Date of repair, location and name of inspector j

c.

Preparation of affected area i

1.

Chipped to sound concrete 1

1 2.

No feather edging a

j 3.

Area clear of debris, oil, grease and dirt d

j d.

Inspection of bonding material, proportioning and j

mixing i

e.

Proper tools and material, form securely anchored and i

water tight i

l f.

Grout preparations mix time and temperature are in j

accordance with manufacturer's instructions l

l g.

Dry pack mixture is in accordance with Reference 1-A l

h.

Vibration from nearby equipment avoided i

1.

Test sample taken by TUGC0 Lab j.

Curing l

Curing for grout shall ' be as per manufacturer's i

instructions.

Dry pack shall be protected by use of an approved curing compound.

Temperatures around the l

repair area are not allowed to change more than 5* in one hour or 50' in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3.4.2 Surface Defect Repairs i

An in-process monitor of routine surface defect reapirs i

will be conducted by all Civil QC Inspectors to ensure that i

only specified materials, surface preparation, placing l

techniques and curing methods are being used, I

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TEXAS UTILITIES GENERATING CO.

DATE s.

CPSES Ql-QP-11.0-5 3

DEC 13 1982 4 of 7 3.5 DOCUMENTATION 3.5.1 Defective Concrete Repairs a.

The QC Inspector shall verify the satisf actory performance of the checklist items on the Inspection Report (Figure 2) and submit it to the Civil Inspection Supe rvisor/ Des ignee.

D.

The QC Inspector shall verify satisfactory completion of the repairs by signing the " Verification" portion of the Nonconfonnance Report.

3.5.2 Surface Defect Repairs The Civil QC Coordinator shall verify a continuing in-process monitor of routine surface defect repairs in his area by submitting an Inspection Report to the Civil Inspection Supervisor / Designee when so directed.

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INSTRUCTION ISSUE REVISION PAGE NUMBER DATE TEXAS UTILITIES GENERATING CO.

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DEC 13 1982 7

Ql-QP-ll.0-5 5 of FIGURE I DEFECTIVE CONCRETE REPORT

  • PROJECT: CPSES JOB NO. 35-1195 UNIT!

PACE OF STRUCTURE:

POUR NO:

DATE OF POUR 1.

TYPE OF DEFECT:

A.

REBAR EXPOSED DURINC PREPARATION FOR SURFACE DEFECT REPAIR O

B.

REBAR EXPOSED UPON FORM REMOVAL ~

O C.

LINEAR FRACTURE WITH EXTENT UNKNOWN O

2.

LOCATION OF DEFECT:

A.

MAT O

B.

ELEVATED SLAB BOTTOM O TOP O

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C.

WALL O

D.

CURE D

E.

BEAM BOTTOM O SIDE F.

COLUMN O

C.

BLOCK 0UT O

H.

OTHER O

3.

EXTFliT OF DEFECT:

A.

SIZE LENGTH WIDTH DEPTH B.

NUMBER OF REBAR EXPOSED I

4 DESCRIPTION:

DATE QC ENGINEER / INSPECTOR 5.

DISPOSITION:

A.

NON-ROUTINE RIPAIR; DOCUMENT WITH N.C.R.

O B.

ROUTINE REPAIR IN ACCORDANCE WITH SECTIONS O

jFCCP-12

, O DATE CIVIL I!iSPECTIOff SUPERVISOR

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ANSTRUCTION ISSUE N

DAM TEXAS UTIUTIES GENERATING CO.

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CPSES i

DEC10 1982 g of 7 QI-QP-11.0- 5 3

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  • 2 INSPECTION REPCRT
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IConstruction crocedures accroved at work area l

i ICCP.12. Para. 3.4.1 l

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15u f ace Preceration, Para. 3.4.1 l

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!) No feathered edges

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I M erea cleaa cf dabris, 011. arease and dirt l

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lArea to receive grout treated with Weldcrete as l I lbendino acent. Pare. 3.4.1 l

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lDrecer tools an materials at site. Para. 3.4.1 S,

IFoms strong secure and water tight. Para. '3.4.1 l

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IGrout creparations eintime and temcerature are in l l I Meerdance with manufacturer's instructions, Pare. 3.4.11 l l l

! rv pack misture is in accordance with Ref.l.A, Para.3.4. f l I l

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S Vibretten f rom nearby equiement avoided. Para. 3.4.1 l l l l

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I test samle taken by lab, Para. 3.4.1

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1.

IOry pack shall be protected form premature drying by use j

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I Grout shall be cured as cer manufacturer's instructions.

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l Grout protected from mechanical damage by location ano l

Ibarrier Para. 3.4.1 l

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I Temerature around arcut not allowed to change more than l

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