ML20214C501
| ML20214C501 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/12/1986 |
| From: | COMSTOCK ENGINEERING, INC. |
| To: | |
| References | |
| OL-A-025, OL-A-25, NUDOCS 8705200744 | |
| Download: ML20214C501 (11) | |
Text
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f)-25 00CMETED USNRC PROCEDURE TRACKING SHEET PROCEDURENO.ke h ed
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CECO INTERIM APPROVAL
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S & L/ CECO FINAL APPROVAL
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- Effective
- IMPLEMENTATION DATE
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SUPERCEDED BY REVISION APPROVED (Interim / Final)
- Effective
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- Effective Date - The date Q.C. received approval.
- imp enentation Date - The effective date plus fifteen working days.
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- BRAIDWOOD 4.9.4 QA SECT
.L K. COMSTOCK & COMPANY
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4'.9.4 CALIBRATION OF TORQUE WRENCHES PROCEDURE PAGE DATE 1 through 2 03/23/81 Fom #23 11/14/80 1
0 201INFORMATiON ONLY APPROVALS:
L. K. COMSTOCK & COMPANY, INC.
M DATE 3-2.f-P/
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C~. Manager 7
DATE 3 -G -W l -
L. K. COMSTOCK & COMPANY, INCO m
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Proje'c Mianager L. K. COMSTOCK & COMPANY, IN DATE &)3-7/
g Project Engineer 9
QAS I
A BRAIDWOOD 4.9.4 L' K;COMBTOCK & COMPANY QA CCT CALIBRATION OF TORQUE WRENCHES PROCEDURE
1.0 REFERENCES
1.1 L. K. Comstock & Co. Procedure 4.9.1 1.2 TRW Manufacturers Instructions 1.3 Manufacturers Instructions 2.0 PURPOSE / SCOPE 2.1 The purpose of this procedure is to establish the methods used for calibration of torque wrenches in order to ensure the wrenches are calibrated to within specified, tolerances.
As recorded in LKC Procedure 4.9.1
.t 2.2 The scope of this procedure includes the calibration of all torque wrenches which are to be used for safety related Class IE Installations.
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'[.,_j 3.0 PRODEDURE 3.1 Responsibilities 3.1.1 LKC QC shall be responsible for the receipt in-spection and control of all related calibration records / forms per the requirements of LKC Procedure 4.9.1 and verifying that all torque wrenches spe-cified to be recalibrated within a certain tLme frame has been accomplished.
3.1.2 The LKC warehouse foreman shall be responsible for the storage and isuance of torque wrenches per LKC Procedure 4.9.1.
3.2 Procedure 3.2.1 The LKC QC Inspector shall witness the calibration of all torque wrenches using a torque calibration analyser of + 1% accuracy.
NOTE:
The accuracy of the analyser will be veri-l fied by standard wei'ghts traceable to the NBS.
3.2.2 Procedure for calibrating torque wrenches will be as follows :
3.2.2.1 Adjust the selected range indicator to
.zero and follow the manufacturers instruc-tions on using the' torque analyser.
3.2.2.2 Each wrench shall,be checked over the i
l entire range in approximately.10% incre-l ments in the clockwise direction.
PREPARED APP ROV ED REVISED T6TLE ORIG. OAT E REv.OATE PAGE RAB RR PROCEDURE 3-23-81 1 of 2 l
ans 4 l
- t. K. COMBT0CK & COMPANY BRAIDWOOD 4.9.4 QA SECT 3.0 PROCEDURE 3.2.2.3 Torque wrench reading and analyser reading at each increment shall be recorded on Form
- 23 " Torque Wrench Calibration.. Record" and acceptance or rejection noted, based on the tolerances listed in LKC Procedure 4.9.1, 3.3 If any adjustments to the wrench is required, the adjust-ments shall be made by the LKC warehouse foreman or by his designee and rechecking of the entire range performed per Section 3.2.
3.4 The completed calibration record shall be signed and dated by the LKC QC Inspector and filed in the O.C calibration records file per LKC Procedure 4.9.1.
4.0 TOOLS / EQUIPMENT 4.1 Torque Calibration Analyser 4.2 As required.
5.0 FORMS 5.1 Form #23 - Torque Wrench Calibration Record 6.0 SPECIAL INSTRUCTIONS 6.1 Designated working ranges for wrenches may be established for specific test methods, in such instances, calibration shall be performed in so specified ranges and results computed accordingly.
BRAIDWOOD 4.9.1 &
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L K. COMSTOCK & COMPANY 4,9,4 GA SECT TORQUE WRENCH CALIBRATION RECORD TOROUE WRENCH NO.
RANGE
. ACCEPTABLE TOLERANCE REFERENCE LKC 4.9.1 & 4. 9.4
- FREQUENCY OF CALIBRATION STD#
DATE READING STANDARD INSPECTOR DATE READING STANDARD INSPECTOR i
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PREPRRED APPROV ED REVISEO TITLE ORIG. OAT E REV.DATE PAGE RAB PROCEDURE 11-14-80 3-24-81 Form 23 RAB RR
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AJr wrencki rs or extensi:ns tre attached c3 the squits drive of a ::rque for the fallowing reasons:
- 1. To attach the torque wrench to various types of fasteners or fittmgs
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so that torque may be applied.
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- 2. To gain access to locations which cannot be reached with the torque wrench alone.
.x e t HOW TO COMPUTE TORQUE u"
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WHEN USING ADAPTORS
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If an adaptor or extension is attached to the square drive of a Torgo.
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- tyl..y ',J meter or a click-type torque wrench and this adds to its length, then the
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' 'j applied torque will be greater than the dial reading or the pre. set torque.
4 A formula can be used to find what the dial should read or what the pre.
set torque should be in order to obtain the correct applied torque.
S Here is the formula:
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when i
i A+B i-RS = Dial reading or torque setting of the torque wrench.
.I, A =
Distance from the center of the square drive of the torque wrench
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to the center of the handle grip.
Length of the adaptor from the center of the square drive to the B =
center of the nut or bolt. Use only the length which is paralle!
to the handle. See figures 4 and 5.
Torque desired. This is the actual torque applied to the fastener.
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i Here is a typical problem: What should the dial read or the setting y?
j be when "A" is 12", "B" is 6" and "T" is 30 lb. ft.
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AXT 12 X 30 360 t
or - or 20 pound foot.
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A+B 12 + 6 18 g;M.d.
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Therefore 30 pound foot of Torque will be applied at the fastener
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. Ll Note: If the torque wrench reads in pound foot, then "T" should also g', '., '* #'
be in pound foot. "T' and "RS" should be in the same unit of measurement. "A" and "B" should also be the same unit of
.I measurement.
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Tigure 4 - Formula s alues for a Tor {ometer l
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ELECTRICAL CONSTRUCTION Braidwood Nuclear Power Plant Rural Route # 1, Box 83A-2 Braceville, IL 60407 -
Phone (815) 458 2348 MEMORANDUM DATE:
March 23, 1981 TO:
U. Mennecke FROM:
'R.
A. Brown, Sr.
SUBJECT:
LKC QA/QC Section(s) 4.9.4 CONTROL NO.:
81-03-23-01
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Sir:
We are submitting the attached Section(s) 4.9.4, " Calibration of Torque Wrench Procedure", for your review and approval Changes made are indicated by a bar (I) adjacent to the clianges.
This procedure is required for us to continue work as soon as possible.
Thank you for your consideration.
k Sincerely, A
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R. A. Brown, S'r.
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Q. C. Manager
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CARGENT Q LUNDY ENolNEERG 1'
S S E AST MON ROE STREET CHIC AOO. ILLINOIS 90403 TELEPHONE 382 269 2000
+
April 13,1981 Project No. 4683-05 Commonwealth Edison company Braidwood - Units 1&2 Electrical' Installation Work S&L Specification: L-2790 W'.
Mr. T. R. Sommerfield
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Braidwood QA Superintendent Commonwealth Edison Company i
Braidwood Station
Dear Mr. Sommerfield:
Enclosed is a copy of the following L. K. Comstock procedures which have been reviewed and accepted.
Procedures:
4.9.4 3/23/81 4.3.5 3/13/81 Yours very truly, c" RANK A. KOSIK F.A. Kosik Senior Quality Control Coordinator FAK:AS:brm In duplicate T
Enclosures Q'
Copies:
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J. T. Westermeier (1/1)
R. Cosaro (1/1)
C. W. Fruehe (1/0)
J.
C.
Lavallee (1/0) r
- 3. G. Treece/T. 3. Thorsell (1/1)
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CUALITY CONTROL PROCEDURES REVIEW REPORT Client Commonwealth Edison Co.
Project-Braidwood Contractor L. K. Comstock Project No.
4683-05 1&2 Unit L-2790 S&L Specification No.
PROCEDURE TITLg See Below Procedure No.
Rev.
Date X Reviewed & Accepted Revise as noted and resubmit.
Hold fabrication.
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Revise as noted and resubmit, Results do not meet specifica-
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contractor can proceed based
] tion requirements.
on making revisions noted.
COMMENTS:
4.9.4 3/23/81 Calibrating Torque Nrenches Procedure 4.3.5 3/13/81 Safety Related Cable Pan Installation A8&
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Distribution:
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Reviewed,by F. A. Ky ik Aoril 13, 1981 Date o
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QC Form 1022 R7 l
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DATE Acril 15.1981 t
BRD #
5020 Mr. R. Cosaro Project Superintendent Braidwood Station
Dear Mr. Cosaro:
4.9.4 3/23/81 S & L has accepted, for on site use, the LKC 4.3.5 3/13/81 procedures which are named on the attached copy (les) of the S & L transmittal (s) dated April 13, 1981 Please notify the contractor accordingly, and send C.E.Co. Q. A. a ccpy of the notification.
xD T. R. Sommerfield Q. A. Sucerintendent
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Braidwood Station LJT:skg CC: Q.A. File /2790A.20H A
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P April 23, 1981 TO:
L. Facchina
SUBJECT:
L. K. Comstock's Procedure Approvals L. K. Comstock's procedures 4.9.4 (3/23/81) Calibration of Torque Wrench and 4.3.5 (3/13/81) Safety Related Cable Pan Instal-lation have final approval for on-site use.
cf4 3%%d/.//
Carl Mennecke Of/vk g8EhV>f%/y ga221su
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