ML20199E430

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Rev 0 to Procedure QI-043, Reinspection of Concrete Placement
ML20199E430
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 09/13/1985
From: Chester J, Patterson A, Ross G
EVALUATION RESEARCH CORP.
To:
Shared Package
ML20199D912 List: ... further results
References
FOIA-86-36 QI-043, QI-43, NUDOCS 8606230301
Download: ML20199E430 (11)
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Text

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C0HANCHE PEAK RESPONSE TEAM QUALITY INSTRUCTION FOR ISSUE-SPECIFIC ACTION PLAN NO. VII.c PROCEDURE: QI-043 REVISION: 0 (b DATE OF ISSUE: 09/16/85 k &

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7 REINSPECTION OF CONCRETE PLACEMENT PREPARED BY:

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QI-043 Rev. 0 l 1

1.0 PURPOSE .

This instruction provides the methods and accept / reject criteria for the performance of reinspection of concrete placement.

2.0 APPLICABILITY

. This procedure applies to the performance of an independent reinspection of a sample of concrete construction activities. It applies to the sample selected from the concrete pours population which is described in the Population Description for Concrete Placement.

3.0 REFERNCE_S 3.1 Memo QA/QC-RT-487. dated September 7. 1985 to A. Patterson from R. H. Brown.delinesting documentation used in development of procedure, including specific sources for attributes and exclusions.

3.2 CPP-009. Performance of Reinspection and Documentacion Review.

4.0 CENERAL l Reinspections are performed and documented in accordance with established CPRT instructions. This instruction established the attributes and accept / reject criteria for the reinspection of accessible concrete construction attributes. Reference 3.2 addresses the method to perform and document the reinspection.

5.0 INSPECTION PROCEDURE For each placement consisting of separate structural elements (walls, slabs, etc.), a separate checklist shall be included for each of these elements. Tolerances indicated are 2 unless noted otherwise.

The following attributes are to be inspected per Attachment 6.1.

All measurements shall be done with a steel tape or wood ruler as required, in increments of 1/8 inch.

Notations made by the inspector per requirements in this procedure for plate numbers, attribute deviations, etc. should generally be made on the applicable drawing included in the verification package and identified in the remarks column of the checklist. When additional space is required for remarks on the checklist, use Attachment 6.2.

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QI-043 Rev. 0

[ 5.0 INSPECTION PROCEDURE (Cont'd)
l. Location of:

A. Walls, columns, piers, pedestals, curbs. pads:

Determine the location of walls and curbs by measuring two opposite terminal points on one face, relative to an adjacent column line. Determine location of tunnel valls in terms relative to the center lines of tunnel Determine the location of columns, piers, pedestals, and pads by measuring two adjacent aid point faces relative to a pair of orthogonal column lines.

For elements in the Containment Building, locations shall be determined relative to a radial column line and the center of the Containment Building or to a defined rectangular grid system.

Verify that, for the points indicated, locations are within the following tolerance of the locations required by the design drawings:

For columns, piers, pedestals and pads less than 24" (any face); 1".

For columns, piers, pedestals and pads 24" and greater (any face); 2".

.l Walls and curbs; 2".

B. Slabs:

Determine the elevation for the top of the slab at any one point. Mark location on the design drawing and verify that the elevation is within 2" of that shown on the applicable design drawing.

C. Beams:

Deterudne the location of the beam as per the instruction for Attribute 1. A. for walls.

When the depth of the beam is the same as the slab thickness, it shall be so noted on the checklist and beam location cannot be verified.

Verify that, at the points measured,'the elevation of the top of the beam is within 2" of the elevation required by the design drawing. Verify that, at the points measured, the beam location is within the fc11owing tolerance of the location required by the design drawing:

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QI-043 Rev. 0 j 5.0 INSPECTION PROCEDURE (Cont'd)

1. Location of: (Cont'd) 1 For beams framing into piles and columns; 3/8".

n For Beans framing into walls; 1/2".

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2. Size of:

A. Walls, curbs, slabs:

  • Measure opposite surfaces through any two openings to determine thickness of the element. When enly one opening exists, measure through single opening. Where openings are not available, measure location of opposite surfaces for the element in accordance with Attribute 1 to determine element thickness.

Verify that the thickness of the element is not less than that required by the design drawing by more than the following tolerance: .

Thickness less than 24": -3/8".

Thickness'24" or more: -1/2".

For elements with one surface inaccessible because it is backfilled or cast against earth, it shall be so noted on the checklist and size need not be determined.

B. Columns, piers, pedestals, pads:

Determine the width of each face of the element by measuring across the face at any convenient elevation.

When this is not possible, determine the location of both adjacent faces accarding to the instructions for Attribute 1; using these locations and applicable building dimensions, determine the width of the element.

Verify the width of the element is not less than that required by the design drawirsg by more than the following tolerance:

1 Thickness less than 24": -3/8".

Thickness 24" or more: -1/2".

For pads, verify that the thickness is within the following tolerances of that shown on the design drawing: '

Design pad height less than 6": -1/4", + 2". -

Design pad height 6" to 12": '

-1/2", + 2".

Design pad height over 12"U -3/4". + 2".

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QI-043 Rev. 0 g 5.0 INSPECTION PROCEDURE (Cont'd)

2. Size (Cont'd)

C. Beams:

Determine the depth of ete element according to

  • Attribute 2.A.

Determine the width of the element according to Attribute 2.B.

For beams whose depth is the same as the depth of the slab, element width cannot be determined. This shall be so noted on the checklist.

Verify that the depth and width of the element are not less than that required by the design drawing by more that the following tolerance:

Required dimension less than 24": -3/8".

Required dimension 24" or morc: -1/2".

3. Sarface Inspection A. Walls, curbs, columns, piers, pedestals, pads:

Inspect all accessible surfaces for honeycombing and voids. (Inaccessible surfaces are chose cast against

( earth, backfilled, or coated.) If any formwork must be i

removed to perform the surface inspection, note this information in the Remarks column.

Verify that honeycombing and voids which are visible do not expose any reinforcing ste.el, or exceeds the rebar concrete cover in the design drawings.

B. Slabs, Beams:

Inspect the underside of slabs and exposed faces of beams for honeycombing and voids per Attribute 3.A. In I

addition, verify that there are no unauthorized cold joints .

4. Cored Holes:

Inspect the entire accessible surface to identify cored holes.

For tech identified cored hole, verify that the hole is '

epproved per design drawings (including DCA's). The location of the hole shall be within 2" in any direction of the specified location.

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QI-043 Rev. 0 g 5.0 INSPECTION PROCEDURE (Cont'd)

5. Cracks For beams and slabs, if in the inspector's judgement questionable cracks are evident, request an evaluation by the Level III inspector. Otherwise, accept this attribute. For say such questionable cracks, the Level III inspector will.

when requested, determine the acceptability of these cracks.

If the Level III believes the crack requires further engineering evaluation, then reject the attribute, and write a deviation report. Otherwise, the Level III will accept the attribute.

6. Patches s Verify that major patches (concrete repairs that have resulted from NCR's) are sound by tapping with a 16 oz. hammer on the aras of the patch, and comparing the resulting sound with the sound that results when tapping the adjacent concrete.
7. Anchor Bolts t A. Verify that anchor bolts cast in concrete, for all equipment components Ltd structures, have been installed as shown on the design drawings.

B. Verify bolt size by measuring diameter. Verify that the bolt projection is within +)" tolerance of that shown in the design drawings.

C. Verify that the bolt distance to the edge of the concrete is within 1/4" tolerance of that shown in the design drawings.

8. Embedded Places and Structural Shapes Verify that the mark number of all embedded plates / structural shapes match those shown on the design drawing.

If all of the embedded plates / structural shapes mark numbers match those shown on the design drawings, accept the attribute.

If no mark numbers are visible, verify that the place dimensions agree with those shown on the design drawings.

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Record on the design drawings the status (i.e.: Mark Number not verifiable, accept, reject) of each inspected embedded plate / structural shape.

If any visible mark numbers (entire number) match those shown on the design drawings, and there are no incorrect mark numbers, the attribute is accepted. Enter the tnamber of "Not Verifiable" mark asmbers in the, design drawings. ,

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QI-043 Rev. 0 5.0 INSPECTION PROCEDURE (Cont'd)

8. Embedded Plates and Structural Shapes (Cont'd)

If one or more mark numbers do not match those shown on the design drawings, the attribute is rejected.

If an embedded plate / structural shape is shown on the design drawing but has not been installed in the field, do not write a deviation report and enter the number of such embedments in the design drawings.

If an embedded plate / structural shape is installed in the field but not shown on the design drawing, mark the attribute

" reject" and write a deviation describing the as-built configuration, location, mark number (if visible) and whether or not an attachment to the embedment has been made.

If an embedded plate / structural shape is located within 8 inches from the edge of concrete, provide the as-built location in the design drawing. Also take note of any attachment to the embedment.

If any plate is shown as a single plate on the design drawing, but has been installed in two or more pieces, reject the attribute and write a deviation report describing the as-built configuration, location and mark number (if visible).

Record all plate mark numbers on the design drawings.

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Attachment 6.1 qI-043 see. o Page ( of 2 g GECKLIST Canastu trag assroust tra CIRCELZsf

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CatfANCIE FIAE RESFouSE TIAN G RELIST w mATIcu m c viamcAnos ytc 30.

CONCRETE m FACE 2 CF 2 vtzmcAnon ACCEPT SUECT DATE

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5. "" 'f;d Places and Structural Shapee I

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COMANCHE PEAK RESPONSE TEAM SUPPLEMENTAL INSorCTION INSTRUCTION P0PULATION DESCRIPTION QUALITY INS WCTION 3.h Concrete Placement QI-043 PAGf 1 0F 1

, VERIFICATION PKG. NO.

EQUIPMENT MARK / TAG NO.

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NUMBER SUPPLEMENTAL INFORMATION AND JUSTIFICATION Varification

9. Attribute Accept Reject Date Remarks

, . Cast in Place

,, Inserts -

(Remeed Inseris) ,

Instructions: Verify that all concrete cast in place inserts have been installed in the locations shown in the design drawings in according to the tolerances given therein.

J Source Document: G & H design drawings. -

Justification: This special instruction is needed to expand on the-inspection requirements for anchor bolts.

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s 4. o Attachment 6.2 QI-043 Rev. 4 8* ' l fI

( SUPPLEMENTAL REMARKS VERIFICATION PACKAGE NO. I-S-CONC-ATTRIBUTE (NO./ DESCRIPTION) RENARKS e

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