ML20137H797
| ML20137H797 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/22/1982 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML17198A292 | List:
|
| References | |
| FOIA-85-59 QI-QP-11.0-12, NUDOCS 8512020479 | |
| Download: ML20137H797 (4) | |
Text
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I TEXAS UTillTIES GENERATING CO.
N E
REVISION g g PAGE CPSES
'd QI-QP-11.0-12 6
1 f4 MM 2 2 W !
1 PREPARED BY:
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3 g 1 INSPECTION OF PRESSURE :
DATE l
I GROUTED BASE PLATES AND l l
EQUIPMENT BASES APPROVED BY: ki[
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1.0 REFERENCES
1-A CEI-25, " Grouting Pipe Support Wall and Ceiling Plates" l-B CEI-27, " Grouting of Equipment Base Plates with Ceilcote 658-N Grout" 2.0 GENERAL i
W 2.1 PURPOSE d
38 i
This instruction provides the QC Inspector with the criteria
/3 to be used when inspecting Epoxy Pressure Grout on supports, kJ base plates and equipment foundations with the use of Ceilcote 658-N epoxy grout.
2.2 SCOPE l
This instruction is to be used when inspecting the pressure grout used on ASME Section III, Subsection NF, Class 5 i
Supports, cable tray, conduit supports and gaps formed i
j between the concrete and the equipment base after grouting per CCP-16 (due to shrinkage). The use of this material is limited to gaps not to exceed 1/2 inch wide.
3.0 INSTRUCTION 5tenieuinaN 3.1 FORMING Epoxy grout is applied in a fluid state and adequate forms or l
" Dam" must be provided as applicable.
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INSTRUCTION ISSUE REVISION PAGE TEXAS UTILITIES GENERATING CO.
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QI-QP-11.0-12 6
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3.2 EQUIPMENT / BASE PLATE PREPARATION Pressure Grout placement holes shall be located as described j
in Attachment 1 to CEl-25 for base plates and in accordance j
with the instructions provided by Engineering on an Operational Traveler for equipment bases.
Hole size shall be 1/4" or as specified by Engineering and does not require repair af ter grout placement.
QC shall verify that placement holes are not within 1" of a concrete anchor and that the void under the base plate does j
not exceed 1/16".
Gaps exceeding 1/2" shall be brought to the attention of the Engineer for resolution prior to grout placement.
3.3 MIXING l
The mixing of the epoxy resin and resin converter shall be f
as per the manufacturer's instructions and Reference 1-A for i
hanger base plates, Reference 1-B for equipment bases.
Constituents provided in field unit kits are specific l
quantities and are not to be deviated from.
When the i
temperature of the field unit kits exceed 90*, the contents j
of the sealed containers must be cooled to about 70' F.
Below 70*
F, mixing becomes difficult.
Best handling properties are achieved at 75'F 5'F, but are not.
manda tory.
Properly mixed grout will be unifonn tan in color with no dry areas.
Pot life may vary depending on temperature. At 70*F, pot life will be approximately 30 minutes.
Mixed grout will be considered unacceptable when the first signs of gelling occur.
3.4 PLACEMENT Ceilcate 658-N Grout shall not be placed unless the surface temperature of the area to be grouted is at or above 50*F.
One surface temperature will be taken for each area that the base plates are being grouted in.
Infrequent dips in i
temperature to 40*F is permissible during placement and/or cure; however, the elapsed time the temperature is below 50*F shall be added to the cure time.
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INSTRUCTION ISSUE
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REVISION PAGE f TEXAS UTILITIES GENERATING CO.
CPSES I
l QI-QP-11.0-12 6
l MAR 2 2 19823 of 4 i
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QC shall verify that construction has placed dial indicators i
on equipment base plates to monitor base movement during I
pressure grouting and that the readings are recorded in the operational travelers.
Where possible, pressure grouting shall proceed in all directions from the centermost opening. As soon as grout is emitted from an adjacent hole and the grout is free of bubbles, injection may begin at that opening.
This step wise procedure shall be continued until the grout is forced I
(bubble free) from all sides of the base plate or holes adjacent to the edge.
j NOTE:
On equipment when isolated pockets are being
- grouted, the above paragraph may not be applicable.
3.5 CURE OF GROUT When a system has been grouted and is being placed into (A
operation prior to the full seven days of cure, the hangers
)
that have been grouted will be monitored for surface temperature and cure time as stated below.
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Surface Temp. 'F Hours of Cure 50 - 69 72 70 - 89 18 90 - 110 16 Below 50'F little or no cure take,s place, therefore, grouted areas are to be maintained above 50*F for proper cure.
Full cure of grout shall be seven days at or above 50'F.
3.6 DOCUMENTATION Equipment base plate grouting shall be documented on an Operation
- Traveler, a
Grout Placement
- Card, and an Inspection Report (See Figure 1).
Hanger base plate grouting shall be documented on a Grout Placement Card and the IR.
3.7 SAFETY Safety precautions shall be observed as identified in Reference 1-A or 1-B.
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INSTRUCTION ISSUE ER DATE TEXAS UTILITIES GENERATING CO.
CPSES gg,,
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FIGURE 1 I
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l' COM AN CHE PEAK STEAM ELECTRIC STATION s,.rrt er INSPECTION REPORT jan "0-CE3 G"'7'C" arts otscaiPrea GROUT OF PIPE SPT, lNN7'"
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3FEG.E 2323-MS-100 si et O!-CP-11.0-12. Rev.
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PRESSURE INSPECTION ATTRl5UTE5
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lCardadecuatelysignedoff.
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IDam erevided aleno state edee as recuired.
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3.
lHoles drilled in orceer location.
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4.
ICeilcote 658-N or approved ecual used.
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5.
l=ived acceedine to Manufacturer's instructions.
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ITe eerature meets Manufacturer's scecifications for l l I 1
I felacement.
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7.
Icae does net exceed in" wide.
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IDial indicators are placed to monitor ecutoment base l l l
lelate movemnt durine Dressure crouting and readings
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l are emeerdad ce Travelees.
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ICreut anne is eured =hea systep is olaced into operation l ll 0
l ar[nr en full cure.
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REFERENCE:
CEl-25. Rev.
CEl-27. Rev.
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1.R. CLOSED Q
8"
I 8'marues 8
oc marterom
's TUGCO OA Form fee.1 h
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