ML20137G650
| ML20137G650 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/17/1978 |
| From: | James Smith TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML17198A292 | List:
|
| References | |
| FOIA-85-59 QI-QP-11.0-5, NUDOCS 8512020229 | |
| Download: ML20137G650 (6) | |
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E TEXAS UTILITIES GENERATING CO.
REVISICN PAGE (3
CPSES LJ QI-QP-ll.0-5 1
8-17-78 1 of 5 PREPARED BY:
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f./7 7g INSPECTION OF CONCRETE APPROVED B g,g,,/7jg pf FIFAIR O N E ON O m
1.0 REFERENCES
1-A Specification 2323-SS-9, " Concrete" l-B Construction Procedure 35-1195-CCP-12. " Concrete Patching, Finishing and Preparation of Construction Joints".
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2.1 PURPOSE AND SCO
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.d To describe the method for QC inspection of repairs to concrete surface defects and defective concrete to ensure co=pliance with Reference 1-A.
2.2 DEFINITIONS 2.2.1 Concrete Surface Defects Surface defects shall be defined as minor air pockets, tie holes, honeyco=bing, sand streaking 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 removal to sound concrete, reinforcing steel is exposed.
3.0 INSTRUCTION 3.1 VISUAL CHECK OF CONCRETE SURFACES a.
Immediately upon form removal, the QC Inspector shall visually inspect the concrete surface for defects as
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defined in Paragraph 2.2.
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b.
If surface defects are noted, the QC Inspector shall verbally notify B&R Construction to repair the defect in accordance with existing procedures.
If defective concrete is noted upon form removal, or rebar c.
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).
3.2 INVESTIGATION OF DEFECTIVE CONCRETE a.
The QC Inspector shall submit the Defective Concrete Report (Fig,ure 1) to the Civil Inspection Supervisor /
Designee for review and investigation of the defect.
b.
If the defect is of a unique nature, it will be so noted by the Civil Inspection Supervisor / Designee in the disposition 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 por-(g']
tion 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 the Defective Concrete Report (Figure 1), B&R Construction will establish a re-pair procedure (disposition) in response to the nonconformance report 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 ap-proved defective concrete repair procedure and direct the cog-nizant QC Inspector to prepare a checklist on the Inspection Report (Figure 2), to ensure compliance with the approved pro-cedure. The following inspection items will be verified:
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INSTRUCTION ISSUC TEXAS UTILITIES GENERA.tNG CO.
AGE NU1BER DATE CPSES 8-17-78 3 of 5 nr_np_t1 n_;
1 Reference to approved repair procedure, a.
b.
Date of repair, location and name of inspector, c.
Preparation of affected area, d.
Inspection of bonding material, proportioning and mixing.
e.
Placing Technique.
f.
Curing.
3.4.2 Surface Defect Repairs An in-process monitor of routine surface defect repairs will be conducted by all Civil QC Inspectors to ensure that only speci-fled materials, surface preparation, placing techniques and cur-ing methods are being used.
3.5 DOCUMENTATI0:;
3.5.1 Defective Concrete Repairs The QC Inspector shall verify the satisfactory performance a.
of the checklist items on the Inspection Report (Figure 2) and submit it to the Civil Inspection Supervisor / Designee.
b.
The QC Inspector shall verify sr.tisfactory co=pletion of the repairs by signing the " verification" portion of the nonconformance 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 sub-mitting an Inspection Report to the Civil Inspection Supervisor /
Designee when so directed.
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