ML20214D851
| ML20214D851 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 10/08/1986 |
| From: | Patel, Sippel S AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| OL-A-134, NUDOCS 8705210508 | |
| Download: ML20214D851 (10) | |
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ELacTRICAL EOUTPMENT INSTALMTION
'87 fB 21 P7 :55 LIST OF ATTRIBUTES EXCLUDED _
OR JUSTIFICATION POR ALTERNATE CRITRRTA d
1.
The requirement for covers on junction boxes is excluded.
During construction the junction box covers are frequently removed for cable pulling, cable termination, and by Ceco's testing / maintenance people. Therefore, a L. K. Comstock Q.C. accepted junction box may not necessarily have a cover properly installed during BCAP reinspection.
2.
The requirement of mounting terminal boxes 4'-6" above the floor is excluded.
The requirement is intended for maintenance purposes and is not design significant.
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Reference:
Note 51, drawing 20E-0-3390 Rev. AV).
3.
The requirement for drip shields inside containment terminal boxes is excluded.
The environmental qualification testing (Ref: Wyle test report 817657. dated 12/21/83) tditch determined the ability of the subject terminal blocks to perform their safety function under design conditions did not utilize drip shields. Therefore the drip shields are not design significant (
Reference:
Detail E on drawing 205-1-3559 Rev.AG).
4.
Grouting under front and rear of cabinets as shown on the electrical installation drawing is excluded per TIR 148.
5.
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ttributes associated with embedded structural items such as plates.
._ channels, and angles are included in the concrete Placements (CSR-I-S-001) population and therefore, are excluded from the Electrical Equipment Installation population.
o 6.
Sequence torquing of Electrical Containment penetration flange bolts is not recreatable and therefore, is excluded.
In addition the penetration leak rate test will detect any deficiency in the pressure boundary due to insufficient or incorrect torqu hg.
(Ref: Conex and Bunker-Ramo penett'ation Ista11ation Manuals) 7.
Verification of "o* rings at conduit / junction box interfaces is excluded. Consonwealth Edison Company NCR9 665 dated 10/5/84 was written to address the lack of "0" ring installation at junction boxes.
(Ref: S&L Standard E8-146 8/8 Rev. Dated 5/2/84) h0kS6 PDR k'
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o Page 2 of 2 Rev. 2 ELECTRICAL SOUIPMENT INSTALLATION _
LIST OF ATTRIBUTES EXCLUDED OR JUSTIPICATION POR ALTERNATE CRITERIA 8.
For anchor bolt installations, bolts are specified to be snug tight.
In order to assure this the nuts are installed with a wrench and are not loose. Reinspection to verify that the nuts are not removable by hand will assure that the nuts are not loose.
9.
Internal " point to point" wiring revision work verification is excluded. Commonwealth Edision company's Operational Analysis Department testing and Start-Up testing provide sufficient evidence of correct internal " point to point" wiring revision work.
REFERENCE Comunonwealth Edison Company's " Electrical Construction Testing Procedures" and " Start-Up Manual."
10.
Bolts and cap screws (not requiring spring nuts) will not be torqued
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when the specified torque value is 100 ft. Ibs. or less. This is in accordance with TIR's 195 and 196.
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Rev. 3 CABLE PANS - LIST OF ATTRIBUTES NOT INCLUDED IN THE CHECKLIST M
OR JUSTIFICATION POR ALTERNATE CRITERIA l
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1.
Grounding of Cable Pans (Ref. 20E-0-3391A, Rev Y)
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Grounding of Cable Pan is required for personal safety.
It is not a nuclear safety related requirement and therefore, it is not a design significant attribute.
2.
Segregation Code labeling at 15' Intervals (Ref. 20E-0-3390, Rev. AS, Note 13)
Segregation code labeling does not affect safe shutdown of the
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plant. Segregation code labeling will be inspected at routing points t./
which will give reasonable assurance that pan has the correct segregation code.
3.
Separation Requirements (Ref. 20E-0-32378, Rev. N, Notes 48 & 50), Pan Covers (Ref. STD-EB-702 B/B, Rev. dated Nov. 29, 1980, sec. 4)
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When separation requirement of minimum 3" metal to metal horizontal and l' vertical between safety and non-safety cable pans, and 5' vertical between redundant ESF division cable pans cannot be met pan covers are required to be installed. No permanent cable pan covers are installed as of June 30, 1984. Therefore, this attribute is not included.
._ Also L. K. Comstock Company B. P. 4.3.5, Sec 6.1 provides for walkdown for determining cover requirements only after all cable pulling is complete and cable pans are cleaned up.
4.
Welding Detail 1002 - Dwg. 20E-0-3252, Rev. AL Detail 1013,1015-Dwg. 20E-0-3237A, Rev.L Detail 1005 - Dwg. 20E-0-3250, Rev.* AE Detail 10, 11, 1028 - Dwg. 20E-0-3251, Rev. AC Detail 1009A Alternate - Dwg. 20E-0-3237, Rev. AB The welding for the above referenced details is not structurally design significant and therefore, is not included.
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Page 2 of 2 Rev. 3 CABLE PANS - LIST OF ATTRIBUTES NOT TNCLUDED IN THE CHECKLIST OR JUSTIFICATION FOR ALTERNATE CRITERIA (cont'd) 5.
Torquing of Cap Screws on Horizontal Cross members for Cable Pan Hangers (Ref: STD EB-115.rev dated 4.21.83 para 3.7, Comstock Q.A. Procedure 4.3.5 Rev. B, para 3.7.1)
Cap screws with spring nuts installed prior to 2-29-84 will not be torqued to verify the torque values specified in the referenced standard as Ceco QA Audit Report # QA-20-83-59 and QA Surveillance Report #3753 has identified the nonconformance for this attribute. Further, the Surveillance will remain open until L.K. Comstock completes the retorquing program and the Q.A. follow-up is complete. The Q.A.
follow-up will demonstrate that corre.ctive action is complete and action to preclude repetition is in place.
A generic observation had been written to address torquing of cap screws installed prior to 2-29-84 and not covered by the Ceco QA Audit Report #
04-20-83-59.
Torque values for cap actews installed after 2-29-84 will be verified by
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documentation review.
6.
Bolt spacing Tolerance A tolerance of 1/16" is allowed for the spacing between the centerlines of two. bolts. This tolerance is based on the standard bolt hole diameter which is 1/16" greater than the nominal bolt diameter.
(Referencar; AISC Manual of Steel Construction - 7th Edition) i
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ReviBion 2 Page 1 of 2 CONDUIT - LIST OF ATTRIBUTES NOT INCLUDED IN THE CHECKLIST 1.
separation requirement between instrtment conduit and power or control conduit in the same safety division (Ref: EB-146 B/B, dated 5/2/84, Section 7.1.13).
This separation requirement is not mandatory by any national code or standard. All class 1E instrument cables are shielded, twisted pair and are installed in their own enclosed raceways. These design features will minimize noise signal interference from power or control cables. Also, S&L has deleted this requirement from the std. EB-146 B/B, dated 8/10/84. Therefore, it is not design significant.
2.
Grounding Requirement for conduits (Ref: EB-146 B/B, Sec. 9.0)
Grounding of conduit is required for personal safety. It is not a nuclear safety related requirement and therefore, it is not a design significant attribute.
Grounding of instrument cable shield is included under cable population.
3.
Conduit Penetration of Fire Barriers (Ref: EB-146 B/B, dated 5/2/84, Sec. 7.1.18).
No fire barriers are installed as of this date. Therefore, this attribute can not be inspected.
4.
Segregation code Labeling at every 15' interval-(Ref: Dwg. 20E-0-3390, Rev. AS, Note 13H).
Conduit segregation code labeling does not affect safe shutdown of the plant even though it is a regulatory requirement. Segregation code marking at conduit terminations, and both sides of floors and walls will be inspected. This will provide reasonable assurance that segregation code labels were installed on the conduits. Therefore, deletion of inspection requirement for 15' interval is not design significant.
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CONDUIT-LIST OF ATTRIBUTES NOT INCLUDED IN THE CHECXLIST 5.
Burrs or sharp edges on conduit ends (Ref:
EB-146, B/B, dated 5/2/84, Sec. 7.2.1).
All conduit terminations are provided with insulated bushings. Therefore this attribute is non-recreatable.
6.
12" slack in a class 1E power or control cable to allow for displacement between tray and conduit (Ref: EB-146 B/B, dated 5/2/84, Sec. 7.1.6).
This attribute is non-recreatable.
7.
Torquing of Cap Screws (Ref: Dwg-20E-0-3393, Rev. AE, Note 4E)
Cap screws will not be torqued to verify the torque values specified in the drawing as Ceco QA Audit Report t QA-20-83-59 and QA Surveillance Report 83753 has identified the noncomformance for this attribute.
Further, the Surveillance will remain open until L.K. Cosastock completes the retorqing program and the Q.A. follow-up is complete. The Q.A.
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follow-up will demonstrate that corrective action is complete and action to preclude repetition is in place.
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Conduit Hangers - List of Attributes Not Included in the Checklist (CSR-I-E-COH) or Justification for Alternate criteria 1.
Hanger Detail Number Detail number for hanger piece parts is omitted as an attribute for inspection. Supports are identified by location, which is shown on the applicable category I - Conduit Support Building Plan.
(Ref.
Spec L-2790-STD-EB-115.0 Section 2.9) 2.
Torquing of Cap Screws and Bolts ASTM A307 bolts and hex head cap screws, and ASTM A325 bolts are specified for Category I hanger construction.
Capscrews with springnuts installed prior to 3/2/84 will not be torqued to verify the torque values as Ceco QA Audit Report
- QA-20-83-59 and QA Surveillance Report #3753 nas identified the nonconformance for this attribute. Further the surveillance will remain open until L. K. Comstock Co. completes the retorquing program and the QA follow-up is complete. The QA follow-up will demonstrate that corrective action is complete and action to preclude repetition is in place.
A generic observation has been written to address torquing of
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capscrews installed prior to 3/2/84 and not covered by the Ceco Audit Report #QA-20-83-59.
Torque values of capscrews ir. stalled subsequent to 3/2/84 will be verified by Documentation Review.
'~ ASTM A307 bolts are used only in bearing type connections. These connections do not depend on bolt torque for structural integrity.
Therefore, bolt torque will not be checked.
ASTM A325 bolts are specified only for a few sliding type connections. The details for these connections specify that the bolt and nut be hand-tight.
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Reference:
Dwg 20E-0-3393, Revision AE Note 4E; Specification L-2790, STD-EB-115.0, Section 3.7) 3.
Auxiliary Steel Location Tolerances (For hangers attached to auxiliary steel) ruim)(De c-H-85 prepared By A
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Rev.,4 Page 2 of 2 Auxiliary steel location tolerances are omitted as attributes for inspection. Hanger location tolerances, which are equivalent to, or more stringent than auxiliary steel location tolerances, will be checked. Therefore, auxiliary steel location tolerances will be checked implicitly when hanger location tolerances are checked.
(Ref: Dwg 20E-0-3393U, Revision L, Notes 10.D & 14.D) 4.
Bolt Spacing Tolerance and Edge Distance Tolerance A tolerance of 1/16" is allowed for the spacing between the centerlines of two bolts, and the distance from member edge to bolt centerline. This tolerance is based on the standard bolt hole diameter which is 1/16" greater than the nominal bolt diameter.
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Reference:
AISC Manual of Steel Construction - 7th Edition AISC Manual of Steel Construction - 8th Edition) 5.
Dimensional Tolerance of Rolled Structural Shapes Dimensional tolerances for the legs, stems, webs, and flanges of structural steel shapes are to be consistent with the rolling tolerances of standard mill practice.
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Reference:
AISC Manual of Steel Construction - 7th Edition AISC Nanual of Steel Construction - 8th Edition)
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Cateoorv I - Cable Pan Hangers List of Attributes Not Tneluded in the Checklist (CSR-I-E-CPH ) or Justification for Alternate Criteria
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Erection Mark Number / Hanger Detail Number.
Erection mark number or hanger detail number for hanger piece parts is emitted as an attribute for inspection.
Supports are identified by location, which is shown on the applicable Cable Pan Building Plan drawing.
STD-EB-115.0 Section 2.9)
(Ref. spec. F/L 2815, spec. L2790 -
2.
Torquing of Cap Screws and Bolts ASTM A307 bolts and hex head cap screws, and ASTM A325 bolts
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are specified for Category I hanger construction.
j Cap screws with spring nuts installed prior to 3/2/84 will not be torqued to verify the torque values specified in the drawing, as Ceco QA Audit Report 8 QA-20-83-59 and QA surveillance Report 83753 has identified the nonconformance for this attribute.
Further, the Surveillance will remain open until L.K. Comstock completes the retorquing program and the QA follow-up is complete. The Q.A. follow-up will demonstrate that corrective action is complete and action to preclude repetition is in place.
A generic observation has been written to address torquing of capscrews installed prior to 3/2/84 and not covered by the Ceco Audit Report #Q4-20-83-59.
Torque values of capscrews installed subsequent to 3/2/84 will be verified by documentation review.
ASTM A307 bolts are used only in bearing type connections.
These connections do not depend on bolt torque for structural integrity. Therefore, bolt torque will not be checked.
ASTM A325 bolts are specified for friction connections and for sliding connections.
The details for sliding connections specify that the bolt and nut be hand tight.
Inspection torque values for friction connections are derived from a review of original inspection documentation for structural steel connections.
Inspection torque values are not set to verify exact installation torque but rather to verify that the bolts were originally torqued and not left in a snug-tight condition.
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Category I - Cable Pan Hangers List of Attributes Not Included in the Checklist (CSR-I-E-CPH) or Justification for Alternate Criteria
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Reference:
Specification L-2790 STD-EB-115.0, Section 3.7 AISC Manual of Steel Construction, 7th Edition, AISC Manual of Steel Construction, 8th Edition) 3.
Bolt Spacing Tolerance and Edge Distance Tolerance A tolerance of 1/16" is allowed for the spacing between the centerlines of two bolts, and the distance from memb'er edge to bolt centerline. This tolerance is based on the standard bolt hole diameter which is 1/16" greater than the nominal bolt diameter.
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References:
AISC Manual of Steel Construction,7th Edition AISC Manual of Steel Construction - 8th Edition)'
4.
Dimensional Tolerance of Rolled Structural Shapes Dimensional tolerances for the legs, stems, webs, and flanges of structural steel shapes are to be consistent with the rolling tolerances of standard mill practice.
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Reference:
AISC Manual of Steel Construction - 7th Edition AISC Manual of Steel Construction - 8th Edition)
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