ML20137J039
| ML20137J039 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/27/1984 |
| From: | Warner M TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML17198A292 | List:
|
| References | |
| FOIA-85-59 QI-QP-11.0-15, NUDOCS 8512020536 | |
| Download: ML20137J039 (6) | |
Text
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INSTRUCTION :
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REVISION MATE PAGE NUMBER l
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PREPARED BY: Med (),N[wf4. E-Z Y-?
VEr1IFICATION OF MMM DUE l
BASE PLATES FOR I APPROVED BY:/[~'h,de 2 d wA S - 2 '/ Ed GROUTING DAir i
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APPROVED BY:
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1.0 REFERENCES
1-A Gibbs and Hill Specification 2323-SS-9, " Concrete" 1-B CP-QP-18.0, " Inspection Reports" i
..e 1-C CEI-25, " Grouting Pipe Support Wall and. Ce.iling PTates" l
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i 1-D QI-QP-11.0-6, " Inspection %f '536uting"
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e 1-E CP-QP-15.0, " Tagging Sy em". j.
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1-F QI-QP-2.1-21, "Quali fication of Baseplates for Grouting l
Verification Personnel" 2.0 PURPOSE AND SCOPE The purpose of this instruction is to provide the criteria and frequency to be used when performing verification of i
seismic wall and ceiling mounted component support base plates located in Seismic Category I Buildings for grouting j
i in accordance with the requirements of Reference 1-A.
Floor i
i mounted base plates receiving dry pack material or grout do not fall within the scope of this instruction.
I 2.1 Quality Control personnel using this instruction shall be cognizant of the requi rements of Reference 1-F of this i nstruction.
3.0 INSTRUCTION 3
i 3.1 BASE PLATE GROUTING AND SHIMMING h
3.1.1 Inside Containment Use j
Gaps between the base plate and the concrete shall not j
exceed 1/16" for a minimum of.80% of the base plate. The gap between the plate and concrete for a maximum of 20% of the plate may exceed 1/16 inch but at no point shall the f (']
gap exceed 1/2 inch.
The gaps shall be measured from the
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periphery of the base plate (See attached example).
If I
these conditions cannot be met the gap shall be filled with epoxy grout.
l 3.1.2 Outside Containment Use l
t Gaps between the base plate and the concrete shall not l
exceed 1/16" for a minimum of 80% of the base plate.
The I
gap between the plate and concrete for a maximum of 20% of I
the plate may exceed 1/16 inch but at no point shall the gap exceed 1 inch.
The gaps shall be measured from the' periphery of the base plate (See attached example).
If these conditions cannot be met the gap shall be filled with j
epoxy grout.
1 t
3.1.3 Shim material may consist of steel shim plates or washers of i
a size necessary to allow proper Hilti bolt torquing without i
base plate defonnation.
The grout fill holes shall be 1/4" diamater and shall not be drilled within 1 inch of a concrete anchor.
Addi tional ly, the grout fill holes shall j
be located outside the bolt hole pattern.
10 "oTe:
rieer meentee ca genent euanerts that ere net i
flush mounted require shimming and grouting and shall be verified by Quality Control inspectors per Reference 1-D.
3.2 00CUtiENTATION i
l Inspections shall be recorded on an Inspection Report in i
accordance with Reference 1-B.
This Inspection Report may be included as attributes on an Inspection Report generic to a specific hanger inspection instruction (i.e.,
cable tray supports, conduit supports, etc.) as outlined in that specific instruction.
Hangers inspected by the craft as required per Reference 1-C do not require a - Bearing Inspection Report (Attachment 2)-
written for grout placement purposes.
All unsatisfactory conditions shall' be documented on an IR and/or a NCR per Reference 1-B.
IR's shall be processed as directed by the QA/QC Supervisor.
l A reject tag may be applied to "unsat" items per Reference 1-E.
During Room Turnover activities or as areas are statused
" complete for grout" by Area Management, a verification 8
"walkdown" may be completed by QC inspectors to veri fy i,
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INSl HUC ilVN REVISION i.
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adequate bearing.
This "walkdown" shall be a minimum frequency of ten baseplates of each type of attached item (pipe support, cable tray hanger, structural platform, etc.)
i in each area, but not more than twenty of each item. This i
"walkdown" inspection shall be documented on an Inspection l
Report (Attachment 3).
I i
Deficiencies identified during this "walkdown" shall be l
reviewed by the applicable QA/QC Supervisor for evaluation of a change in inspection frequency in the affected area.
If further inspection is required, the Inspection Report' (Attachment 3) shall designate the required frequency.
Closure of discrepancies applicable to criteria outlined in i
this instruction or QI-QAP-11.1-28,
" Fabrication, i
Installations Inspections of ASME Component
- Supports, l
Class 1,
2&
3",
paragraph 6.8, may be accanplished by Quality Control personnel certified / qualified either to l
QI-QAP-11.1-28 or QI-QP-11.0-15.
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ATTACHMENT 1 EXAMPLE: BASE PLATE 10" x 10" l
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Base Plate 100 inches j
80% 1/16" gap Cross-hatched area may be up to h"or 1" gap per Dara. 3.1.2.
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total area does not exceed 20 sq: inches.
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l INSTRUCTION REWSION ISSUE N
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ATTACHMENT 2 l
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ATTACHMENT 3 1
- 0ad AN CHE PEAx STEAM ewe 0 Talc S TATio*s I-sic-y I
INSPECTION REPORT an a
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ISEISMIC SUPPORTS IN ABOVE REFERENCED AREA SATISFY i
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IBEARING PEOUIREMENTS PER DARAGQAPH 3.1.
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