ML20215N355

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Rev 3 to Mods & Additions Instruction M&AI-6, Installation of Conduit & Junction Boxes
ML20215N355
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 11/29/1982
From: Cowan L, Cross J, Spruling J
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20215N324 List:
References
M&AI-6, NUDOCS 8611050277
Download: ML20215N355 (5)
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w Sequeyak Nuclear Plant DISTRIstrrION I hm-* mater File Pwr Plant Superintendent

~ Assistaat Pwr Plant Supt. (Oper.)

MODIFIC4TIONS AND ADDITIt4t3 IU _ Assistant Pwr Plant Supt. (Maint.)

INSTRUCTIfm Assistaat Pwr Plant Sept. (BES)

Administrative Supervisor M&AI-6 _IC Maintenance Supervisor (M) l 3 INSTALIATION OF CONDUIT AND 3C Assistaat Naistenance Supervisor (H)

Maintenance Supervisor (S) .j

, I JUNCTION BOXIS 1C

~Malatenance Assistaat Malatenance Supervisor (I) Supervisor (E) j-8 ~-

, Engineeries Supervisor

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Operations Supervisor

  • I IC Quality Assurance Supervisor Nealth Physics Supervisor Public Safety Services Supv.

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Chief Storekeeper PreoF Test Program Coordinator * .*

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IC Outage Director  !

Chanical Engineer (Engineering)

Radiochen I.aboratory a I Imatrument Shop Reactor Engineer (Engineering)

Instrument Engineer (Maink I) -

I Nechanical Engineer (EasiMering)

Plant Services Supervisor Trainias Center coordinator Prepared By: Lysa Covan Pisblic Safety Services - SNP I Shift Engineer's Office Revised by: John Sprutten Unit Control Room I Subettted By: J. Robinson Supervisor 1C IU Nealth Physics I.aboratory Nacir Docuneat control Unit Pwr Plant Superlatendent, WRKP Pwr Plant Superlatendent, BFMP I PORC Review: [/"19 /7.,

Dete. 10 Pwe Plant Superintendent, EENP MB-K Resident NRC Inspector - SNP I

Approved By: [-- IC NBRS-E f r P11. Superintendent Technical Support Center r Unit Control Room #2 Date Approved:

I //. ? M Z, _ Compliance Section Staff Supervisor IC IU Asst. Ontage Director J.E. Gibbs, Outage Director, WBNP The current revision level of this instruction ist 3 ,

Reason for current revision (include all temporary chsage asabers) Revised la }

I accordance with Temporary Chante No. 32-1603. PORC approved 11/19/s2. '

t I The last page of this instruction is Number 21 . -

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  • I Seqcoyab Nuclear Plant P90DIFICATIONS A.VD ADDITIONS INSTRUCTION Cover Sheet Page 2 tt&AI-6 History of Revisions Rev. No. Date Hevise.1 Pages Rev. No. Date Revised p ges 0 II/R/79 All --

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b.0 I!CPECTIT! REQWRDerr3 I QA has the responsibility to ensure that conduits and conduit boxes designated for Class IE cables (divisions of sepsration) have been installed according to the design docunents in the workplen rtad tLia instruction. All other conduits and boxes may be inspected by the Cognir. ant &.gineer.

Installed conduit systems and conduit boxes shall be inspected for the following:

A. Size. type and location B. Identification I C. Grounds I D.

E.

Conduit fittings Flexible conduit installation F. Burrs and sharp edges at terminations G. Physical separation H. Conduit hangers I. Conduit terminations NorE: Conduit box size, type, and location (where applicable) shall be verified and documented when inspection is performed on each conduit' which terminates in the box.

Acceptance Criteria - -

i I A. Size type, and location shall conform to the EN DES approved drawing in the workplan.

NorE: Rigid steel conduit may be substituted for aluminum conduit in the event of a shortage of aluminum conduit, if care is exercised in the selection of supports.

B. Identification I Conduit shall be tagged per TVA Standard Drawing CD-E-15 3.4 of ceneral Construction Specification 0-k0. Conduit boxes shall be labeled with the assigned nameplate and Junction box (identification number JB).specified on the applicable EN DES drawing. When no nameplate is assigned, the box I shall be identified by the specified JB number with sylar self-sticking tape (or equal) in accordance with TVA Standard Drawing DS-E1.2.2.

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NorE: '14mporary identification methods for conduit boxes are authorized pending receipt of permanent labels.

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+ 0. physical geparation g conduit and conduit boxes shall conform to the physical spearation require- l

$, meets specified on IN des drawings.

N. Conduit Mangers

1. In seismic Class I buildias, hangers shall be spaced as follows:

5 ft. (max.) - 1 ft. (ain.) for 3/4" and under to it. (max.) - 1 ft. (min.) for 1" and above l

2. Four inch or smaller 1-hole pipe straps and 4-inch or smaller conduit boxes, shall be installed in accordance with the requirements of I drawings 47A056-2 and -76 respectively. Inspection shall be ac-complished with the related conduit and documented by the inspector's alsmature and date on the inspection sheet.
3. -In aca-seismic areas, conduit supperta shall be spaced in accordance with the National Electric Code OIEC) and documented by the inspector's sisaature and date on the inspecties sheet.

I I. Termination

3. Conduit terminating la a conduit boa or cabinet that do not have treaded hubs or bosses shall be secared usias a locknut and a bushing on the inside sad a lockaut on the outside. In wet locations co duit I hubs may be used.

NOTE: If there is insufficient space for busking installation, coa-duit ends may be rounded to approximately 1/16 inch radius.

2. A bushing or chase nipple shall be lastalled when a conduit termin-ates beneath a cabinet or board.

Documentation conditions encountered that were not anticipated and say NCR's FCR's, design deviations, etc. shall be recorded la the "Reserks" section of the inspection sheet. This I

inspection shall be docismested em the inspection sheet as shows on Attachasst A or by l signature in the work lastructions of the workplan.

The identificattom of the conduit bones included la this inspection shall be re-corded in the " Remarks" secties of the f aspecties sheet er near the signeff in the I work lastructions.

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