ML20137Z489
| ML20137Z489 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 09/23/1985 |
| From: | Rodriquez R SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| RJR-85-487, NUDOCS 8510080255 | |
| Download: ML20137Z489 (102) | |
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3.uuo SACRAMENTO MUNICIPAL UT!LITY DISTRICT O 6201 S Street, P.O. Box 15030. Sacrarnerto CA 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA RJR 85-487 September 23, 1985 JOHN B MARTIN REGIONAL ADMINISTRATOR NRC REGION V 1450 MARIA LANE SUITE 210 -
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WALNUT CREEK CA 94596 <
RANCHO SEC0 NUCLEAR GENERATING SYSTEM UNIT NO 1 DOCKET 50-312 This morning you and I met to discuss the results of the INP0 progress check conducted this last week. As we discussed, INPO noted improvements in the areas they previously evaluated as weaknesses. Based on our internal assessment and INP0s concurrence, we are proceeding with the start-up of Rancho Seco at this time. We also discussed the reasons why we feel electrical. design and construction practices at Rancho Seco give us a high degree of confidence that electrical systems will perform as required. The handouts fro:n this meeting cover the details of our discussbn and are enclosed as an attachment to this letter for your information. If we can provide any additional details, please advise.
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R J R00. GUEZ ASSISTANT GENE MANAGER NUCLEAR 9
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Attachment A INP0 FOLLOW-UP EVALUATION OF RANCHO SEC0 NUCLEAR GENERATING STATION SEPTEMBER 16-19, 1985 o
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l PURPOSE:
TO ASSURE THAT MANAGEMENT DIRECTION HAS BEEN ESTABLISHED PRIOR TO RESTART IN THE FOLLOWING FOUR
. AREAS: -
- 1. ADHERENCE TO PLANT POLICIES AND PROCEDURES
- 2. INVOLVEMENT OF OPERATIONS SUPERVISORY PERSONNEL IN DAILY PLANT ACTIVITIES -
- 3. CONTROL OF MAINTENANCE ACTIVITIES AND POST MAINTENANCE TESTING
- 4. PERFORMANCE OF AUXILIARY OPERATORS AND EQUIPMENT ATTENDANTS
-. _ = _ . - . . . _ - .. -
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THREE PLANT FUNCTIONAL AREAS REVIEWED OPERATIONS
- MAINTENANCE RADIOLOGICAL PROTECTION e
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OPERATIONS IMPROVEMENT NOTED IN:
SUPERVISORY INVOLVEMENT IN OPERATIONS ACTIVITIES CONTROL AND C0 ORDINATION OF MAINTENANCE ACTIVITIES PERFORMANCE OF NON-LICENSED OPERATORS
GENERAL COMMENT
IMPROVEMENT NOTED IN ALL AREAS OBSERVED CONTINUED EMPHASIS ON CURRENT INITIATIVES SHOULD RESULT IN LONG TERM IMPROVEMENT w ------ , , , - -, , - -- -,- -- .--.-,,-- - - .n
MAINTENANCE IMPROVEMENT NOTED IN:
SUPERVISORY INVOLVEMENT IN MAINTENANCE ACTIVITIES
- MORALE, ATTITUDE, AND CONDUCT OF CRAFTSMEN
- CONTROL, WORK PLANNING, AND C0 ORDINATION IDENTIFICATION AND CONTROL OF POST MAINTENANCE TESTING
GENERAL COMMENT
ACTIONS TO DATE HAVE BEEN BENEFICIAL CONTINUED EMPHASIS FOR LONG-TERM IMPROVEMENT
RADIOLOGICAL PROTECTION IMPROVEMENT NOTED IN:
SUPERVISORY INVOLVEMENT WORKERS PERFORMANCE WITH RESPECT TO RADIATION CONTROL 0F RAD AREAS
GENERAL COMMENT
IMPROVED RADIOLOGICAL WORK PRACTICES AND ADHERENCE TO RADIOLOGICAL PROTECTION REQUIREMENTS BY WORKERS IMPROVED MORALE AND DESIRE TO ESTABLISH AND MAINTAIN HIGH STANDARDS BY RAD PROTECTION ORGANIZATION i CONTINUED EFFORT WILL RESULT IN LONG TERM j IMPROVEMENT g
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SUMMARY
TURN AROUND IN MANAGEMENT DIRECTION AND IMPROVEMENTS IN MANAGtMENT CONTROLS ACHIEVED IN THE FOUR AREAS OF CONCERN INP0 HAS N0 OBJECTIONS TO THE RESTART OF RANCHO SEC0 INP0 RETURN VISIT APPR0XIMATELY TWO MONTHS AFTER START-UP TO FOLLOW-UP ON ACTIONS RESULTING FROM EVALUATION REPORT k
Attachment B 1
O CONTENTS t
.I PRINTS OF THE SLIDES 1
J II REPORT ON THE ELECTRICAL INSTALLATIONS III APPENDICES ,
- 1. TABLE OF CONTENTS OF THE CONSTRUCTION METHODS AND PROCEDURES
- 2. ELECTRICAL FIELD ENGINEERS INFORMATION
- 3. CONSTRUCTION METHODS AND PROCEDURES FOR RACEWAY
- 4. ENGINEERING AND INSPECTION INSTRUCTIONS FOR INSPECTION OF RACEWAY
! SYSTEMS (EII NO. EC-2) i
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PURPOSE.OF THE PRESENTATION O
OUTLINE OF THE PRESENTATION HISTORY OF MODIFICATIONS EXPERIENCE AND TRAINING 0F PERSONNEL !
ELECTRICAL DESIGN PROCEDURE FLOW CHART FLOW CHART FOR CONSTRUCTION INSPECTION AND STARTUP TESTABILITY OF ELECTRICtl SYSTEMS .
PLANT WALKDOWN DESIGN VERIFICATION FOR EQUIPMENT QUALIFICATION PLANT WALKDOWN DESIGN VERIFICATION FOR APPENDIX R/ FIRE PROTECTION LER'S ON ELECTRICAL EQUIPENT/ SYSTEMS RECENT EVENTS PERTAINING TO ELECTRICAL EQUIPENT AND SYSTEMS HIGHLIGHTS OF NRC EQUIPENT QUALIFICATION PROGRAM AUDIT AT RANCHO SEC0 - MAY 1985 HIGHLIGHTS OF NRC FIRE PROTECTION APPENDIX R AUDIT AT RANCHO SEC0 - AUGUST 1985 0UTLOOK FOR THE FUTURE - COMMITENT TO STRIVE FOR EXCELLENCE l
SUMMARY
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PURPOSE OF THE PRESENTATION O .
THE NRC HAS REQUESTED INFORMATION ABOUT PROCEDURES USED IN THE DESIGN INSTALLATION INSPECTION TESTING 0F THE ELECTRICAL SYSTEMS AT RANCHO SEC0 THE PURPOSE OF THIS PRESENTATION IS TO DEMONSTRATE THAT ESIGN O
- INSTALLATION INSPECTION TESTING PROCEDURES AND PRACTICES USED FOR ELECTRICAL SYSTEMS AND THE QUALITY ASSURANCE OVERVIEW ENSURE THAT THE RANCHO SECO ELECTRICAL SYSTEMS WILL PERFORM AS REQUIRED FOR SAFE OPERATION O
OUTLINE OF THE PRESENTATION O
- HISTORY OF ELECTRICAL MODIFICATIONS PERSONNEL INVOLVED IN THE ELECTRICAL DESIGN, CONSTRUCTION, INSPECTION AND STARTUP PROCEDURES FOR ELECTRICAL DESIGN, CONSTRUCTION, INSPECTION AND STARTUP TESTABILITY OF ELECTRICAL INSTALLATIONS PHYSICAL WALKDOWN OF ELECTRICAL SYSTEMS O
- LER'S DURING 1983 - 1985 PERIOD i RECENT EVENTS AT RANCHO SECO ASSOCIATED WITH ELECTRICAL EQUIPMENT EQUIPMENT QUALIFICATION AUDIT, FIRE PROTECTION AUDIT FUTURE PROGRAMS
SUMMARY
AND CONCLUSIONS O 1
6 HISTORY OF MODIFICATIONS Q REFUELING OUTAGES MODIFICATIONS .
DATES 11/78 - 12/78 BROWNS FERRY FIRE M0DS 1/80 - 5/80 BROWNS FERRY FIRE MODS TMI MODS 1/81 - 6/81 BROWNS FERRY FIRE MODS TMI MODS EQUIPMENT QUALIFICATION MODS 2/83 - 8 /83 APPENDIX R MODS O EQUIPMENT QUALIFICATION MODS TMI MODS 3/85 - 9/85 APPENDIX R MODS EQUIPMENT QUALIFICATION MODS TMI. MODS l
l RECENT NRC AUDITS
. AUDIT DATES TYPE OF AUDIT ,
l 5/85 EQUIPMENT QUALIFICATION AUDIT O .
8/85 FIRE PROTECTION AUDIT l
(2) EXPERIENCE AND TRAINING 0F PERSONNEL
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SMUD HAS A TEAM 0F ELECTRICAL ENGINEERS AND TECHNICIANS WITH EXPERIENCE IN NUCLEAR PLANTS AND AT RANCHO SEC0, MANY OF THEM FROM ORIGINAL CONSTRUCTION PERIOD.
RESOURCES OF EXPERIENCED MANPOWER ARE PROVIDED BY STANDING CONTRACTS WITH MAJOR NUCLEAR ARCHITECT-ENGINEER COMPANIES.
STAFF IS SELECTED ON THE BASIS OF QUALIFICATIONS AND RELATED EXPERIENCE.
ELECTRICAL PERSONNEL IN THE SUPERVISORY, LEAD AND RESPONSIBLE
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POSITIONS IN ENGINEERING, CONSTRUCTION, QC, STARTUP, AND OPERATIONS HAVE ON THE AVERAGE 10-15 YEARS OF NUCLEAR EXPERIENCE OF WHICH 4-10 YEARS ARE AT RANCHO SEC0.
TRAINING HAS BEEN PROVIDED FOR YEARS ON THE ENGINEERING CONFIGURATION CONTROL PROCEDURE.
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ELECTRICAL DESIGN PROCEDURE FLOW CHART
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ESTABLISH NEED TO MODIFY SMUD SUP. ENGR.
I SCOPING, DESIGN CONCEPTS CRITERIA SR. ENGR. & GROUP LEADER I
DETAILED DESIGN PACKAGE C0 ORDINATION WITH OTHER DISCIPLINES & NUC. OPERATIONS DESIGN GROUP l
COMPLETE CHECK SIGN-0FF BY CHECKER SR. ENGR./SR. DESIGNER O
i REVIEW AND SIGN-0FF
, BY GROUP LEADER I
REVIEW & APPROVAL BY SUPERVISING ENGR.
I COG. ENGR. PREPARES COMPLETE DESIGN PACKAGE I
PRC REVIEW & APPROVAL I
ISSUE FOR CONSTRUCTION O
4 FLOW CHAitT FOR CONSTRUCTION INSPECTION AND START UP
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MOD PACKAGE RECEIVED
& REVIEWED BY CONSTRUCTION FIELD INSTALLATION CHECK BY CONSTRUCTION ENGINEER QC INSPECTION QC INSPECTION IF _ STARTUP GROUP STARTUP HAS DONE A WORK .
STARTUP PREPARES TURNOVER PACKAGE COWLETED WORK HANDED OVER TO OPERATIONS
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-SUR Eft. LANCE PROCEDURES PERFORED SYSTEM DECLARED OPERATIONAL O
TESTABILITY OF ELECTRICAL SYSTEMS O ,
ELECTRICAL SYSTEMS ARE COMPLETELY TESTED BY STARTUP, DESIGN DEFICIENCIES AND OPERATIONAL PROBLEMS ARE EASILY DETECTABLE. ELECTRICAL PARAMETERS CAN BE MEASURED WITH ACCURACY.
0PERATIONS HAVE A PROGRAM 0F SURVEILLANCE TESTING PRIOR TO PUTTING THE SYSTEM IN SERVICE.
ON A ROUTINE BASIS MAINTENANCE AND PERIODIC TESTING PROGRAMS ARE IMPLEMENTED.
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PLANT WALKDOWN DESIGN VERIFICATION FOR EQUIPENT QUALIFICATION PROGRAM O -
ALL EQUIPMENT REQUIRED TO EET EQUIPMENT QUALIFICATION RULE 10CFR50A8 WAS PHYSICALLY INSPECTED (80% OF ALL ELECTRICAL EQUIPMENT)
INSPECTION VERIFIED ACTUAL INSTALLATION AGREED WITH DESIGN REQUIREENTS EQUIPENT INSTALLED WAS EQUIPMENT INDICATED ON DESIGN DOCUENTS EXTENSIVE INDEPENDENT WALKDOWNS BY QA TO VERIFY RESULTS OF ENGINEERING WALKDOWN O
- INSPECTION INDICATED GOOD MATCH BETWEEN DRAWINGS AND ACTUAL INSTALLATION RESULTS OF WALKDOWN DOCUENTED WITH PICTURES AND SKETCHES IN SMUD FILES 1
DATA WILL BE INCLUDED IN THE MASTER EQUIPENT LIST WALKDOWN C0VERED EQUIPMENT / INSTALLATIONS FROM CONSTRUCTION !
i PERMIT UPTO PRESENT l l
i NRC PERFORMED WALKDOWN DURING AUDIT i O l
_- _ - . - - . - . . . . - - - . . . - . - . - - . - - - - - - - . . - - -- J
PLANT WALKDOWN DESIGN VERIFICATION FOR APPENDIX R/ FIRE PROTECTION
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VERIFIED ALL COMMITMENTS IN FIRE PROTECTION SINCE 1975, I.E., BROWNS FERRY FIRE.
VERIFICATION INCLUDED A COMPLETE WALKDOWN OF THE ENTIRE POWER BLOCK 0F THE PLANT.
WALKDOWN COVERED EQUIPMENT / INSTALLATIONS FROM CONSTRUCTION PERMIT UPTO PRESENT.
RESULTS OF WALKDOWN DOCUMENTED WITH PICTURES AND SKETCHES IN SMUD FILES.
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- WALKDOWNS INDICATED A GOOD MATCH BETWEEN ELECTRICAL DRAWINGS, COMMITMENTS AND ACTUAL INSTALLATION.
EXTENSIVE INDEPENDENT WALKDOWNS BY QA TO VERIFY RESULTS OF ENGINEERING WALKDOWNS.
NRC PERFORMED WALKDOWNS DURING AUDIT.
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1 LER'S ON ELECTRICAL EQUIPMENT / SYSTEMS O -
. STATISTICS OF A REVIEW 0F ALL RANCHO SECO LER'S FROM JANUARY 1983 TO SEPTEMBER 1985 ARE LISTED BELOW:
4 TOTAL NUMBER OF LER'S (ALL DISCIPLINES) 84 LER'S ASSOCIATED WITH ELECTRICAL 18 (21.4%)
DURING 1983 9 DURING 1984 2 1/85 TO 9/85 7 TYPES OF PROBLEMS O
- PROCEDURAL / ADMINISTRATIVE TYPE OF PROBLEM 1 1- OPERATIONAL PROBLEM 2 HARDWARE RELATED 11 DESIGN DEFICIENCY 4 4
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RECENT EVENTS PERTAINING TO ELECTRICAL EQUIPMENT AND SYSTEMS REACTOR TRIP BREAKER FAILURE (LER 85-06) 4160V BUS UV RELAY CALIBRATION (LER 85-07)
DIESEL GENERATOR BREAKER CYCLING (LER 85-09)
DIESEL GENERATOR "A" INITIATION ON (LER 85-13)
RCP START NUCLEAR SERVICE COOLING WATER PUMP (LER 85-14)
- BREAKER LOOSE LEADS IN RELAY PANEL H3RPB1 (LER 85-15) 0VERV0LTAGE TRIP 0F B'JS 4A BECAUSE (0DR 85-289) 0F GRID SPIKE O -
MALFUNCTION OF AIR START SYSTEM FOR (0DR 85-292)
DG "B" ;
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HIGHLIGHTS OF NRC EQUIPMENT QUALIFICATION PROGRAM AUDIT O AT RANCHO SEC0 - MAY 1985 -
ALL EQUIPMENT QUALIFICATION (EQ) FILES ERE FOUND TO BE AUDITABLE AND COMPLETE ALL EQ PROGRAM PROCEDURES ERE FOUND TO BE SATISFACTORY EQ TRAINING RECORDS AND LESSON PLANS WERE REVIEED AND FOUND TO BE SATISFACTORY EQ MASTER LIST WAS REVIEWED: NO DEFICIENCIES CITED ,
ALL COMMITMENTS FROM SAFETY EVALUATION REPORTS AND FRANKLIN'S TECHNICAL EVALUATION REPORTS WERE IMPLEMENTED THE NRC CONCLUDED THAT THE SMUD EQ PROGRAM MET THE
- O REQUIREMENTS 0F 10CFR50A9 l
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HIGHLIGHTS OF NRC FIRE PROTECTION APPENDIX R AUDIT AT RANCHO SEC0, AUGUST 1985
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ALL FIRE PROTECTION CALCULATION FILES WERE FOUND TO BE AUDITABLE AND COMPLETE.
ALL FIRE PROTECTION PROGRAM PROCEDURES WERE FOUND TO BE SATISFACTORY.
- HOT AND COLD SHUTDOWN PROCEDURES WERE REVIEWED, WALKED DOWN WITH OPERATIONS AND FOUND SATISFACTORY.
APPENDIX R/ BROWNS FERRY FIRE MODIFICATIONS WERE REVIEWED AND FOUND SATISFACTORY.
ALTERNATE SHUTDOWN SYSTEM WAS REVIEWED AND FOUND SATISFACTORY.
- EMERGENCY LIGHTS, DESIGN AND INSTALLATION, WERE REVIEWED AND FOUND SATISFACTORY.
THE NRC CONCLUDED THAT THE SMUD FIRE PROTECTION PROGRAM MET REQUIREMENTS OF 10CFR50.48 AND APPENDIX R.
N0 DEVIATION N0 VIOLATIONS NO OPEN ITEMS O
l OUTLOOK FOR THE FUTURE COMMITMENT TO STRIVE FOR EXCELLENCE
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THE HIGH LEVEL OF ACCURACY IN THE ELECTRICAL DESIGN, CONSTRUCTION, INSPECTION AND TESTING WILL CONTINUE i AND IMPROVE IN THE FUTURE.
REASONS TO EXPECT CONTINUED HIGH LEVEL 0F PERFORMANCE:
NUCLEAR ENGINEERING PROCEDURES COVER ADMINISTRATION, DESIGN, PROCUREMENT, LICENSING, DESIGN CRITERIA, DESIGN GUIDES, STANDARD SPECS, CONSTRUCTION, INSPECTION.
IMPLEMENTED A ROOT CAUSE INVESTIGATION PROGRAM WHICH WILL MINIMIZE RECURRENCE O' 0F PROBLEMS BY IMPROVING FEEDBACK 0F OPERATIONAL PROBLEMS TO ENGINEERING.
CONTINUED COMMITMENT TO HAVE SUFFICIENT STAFF TO IMPLEMENT THE PROGRAMS.
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SUMMARY
O ELECTRICAL PROBLEMS HAVE BEEN COMPARATIVELY FEW.
THE RECENT PROBLEMS CANNOT BE REGARDED AS A GENERAL TREND.
MAJOR EQ AND APPENDIX R AUDITS HAVE DEMONSTRATED THE QUALITY AND DEPTH OF ELECTRICAL WORK.
INDEPENDENT DETAILED PLANT VERIFICATION WALKDOWNS BY
, ENGINEERING AND QUALITY ASSURANCE HAVE GENERATED ADDITIONAL CONFIDENCE IN THE DESIGN AND CONFIGURATION O C NTROL.
FUTURE WORK WILL BE BETTER AND OF EVEN HIGHER QUALITY.
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9 SACRAMENTO MUNICIPAL UTILITY DISTRICT 1
ELECTRICAL INSTALLATION E
THE RANCI'O SECO NUCLEAR PLANT O~
O SEPTEMBER 1985
TABLE OF CONTENTS 1.0 PURPOSE OF THE REPORT 2.0 ELECTRICAL ENGINEERING DISCIPLINE 2.1 ORGANIZATION 2.2 DESIGN PROCEDURES 2.3 STRENGTHS OF THE ELECTRICAL DISCIPLINE 2.4 WALKDOWN OF THE ELECTRICAL INSTALLATIONS 3.0 ELECTRICAL CONSTRUCTION 3.1 CONSTRUCTION PROCEDURES 3.2 CONSTRUCTION STAFF 3.3 INSPECTION PROCEDURE 3.4 INSPECTION STAFF 3.5 UNIQUE FEATURES OF ELECTRICAL INSTALLATIONS 4.0 TESTING OF ELECTRICAL INSTALLATIONS 4.1 NUCLEAR ENGINEERING GENERATED MODS 4.2 NUCLEAR OPERATIONS GENERATED MODS 4.3 COMMON PROCEDURES 5.0 SURVEILLANCE PROGRAM 5.0 ADMINISTRATIVE PROCEDURE 5.2 SURVEILLANCE PROCEDURES 5.3 FORMAT OF A SURVEILLANCE PROCEDURE 6.0 HISTORY OF ELECTRICAL MODIFICATIONS 6.1 BROWNS FERRY FIRE MODS 6.2 EQUIPMENT QUALIFICATION MODS 6.3 APPENDIX R/ FIRE PROTECTION MODS l
O 6.4 TMI RELATED MODS l
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- 7.0 LER'S ON ELECTRICAL EQUIPMENT / SYSTEMS 4
- t 7.1 STATISTICAL DATA. .
i i' 7.2 'RECENT EVENTS ,
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' 7.3 ANALYSIS OF RECENT EVENTS !
I i- 8.0 RECENT NRC AUDITS j
j 8.1 EQUIPriENT QUALIFICATION PROGRAM 8.2 FIRE PROTECTION / APPENDIX R i ..
.9.0 COMMITMENTS'FOR THE FUTURE i' ,
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1.0 PURPOSE OF THE REPORT
[m'~') The NRC has requested SMUD to furnish information on the procedures and practices used in the design, installation, inspection and testing of electrical systems at Rancho Seco. The purpose of this report is to provide the information requested.
This report is intended to demonstrate that the design, installation, inspection and testing procedures and practices used for electrical systems, and the Quality Assurance Program at Rancho Seco ensure that electrical systems will perform as required for the safe operation of the plant.
2.0 ELECTRICAL ENGINEERING DISCIPLINE 2.1 ORGANIZATION Electrical Engineering Discipline of the SMUD Nuclear Engineering Department is headed by the Electrical Supervising Engineer. The Electrical Staff consists of Engineers, Designers, and Technicians in SMUD's direct employment or furnished by AE firms. The staff is located at Rancho Seco plant s-ite to ensure close coordination between design, construction and operations. The staff is divided into several groups, each group is headed by a group leader, who reports directly to the Supervising Engineer. " Design Team" or
" Task Force" is established for each modification package or a s distinct task. The design team is headed by a responsible engineer k_,) who works as a cognizant engineer if Electrical is the lead discipline or works as support engineer when some other discipline is the lead. The Electrical Field Engineer and his group working inside the plant with the construction, also report to the Electrical Supervising Engineer for technical guidance. This results in close coordination between design and construction. A great majority of design work is done at the site.
The District gives out some electrical design work to AE firms in certain cases. However, the contractor's design team reports to the Supervising Engineer and works under the close technical direction of a group leader.
2.2 ELECTRICAL DESIGN PROCEDURES Modifications in the plant electrical systems or hardware may become necessary because of any regulatory requirements, commitments of the District to the NRC or plant betterment considerations. Thc actual design work for any modification is started only after the "NEED TO MODIFY" is established and it is approved by the SMUD Electrical Supervising Engineer. The task is assigned to a Senior member of the Electrical Staff under the direction of a group leader. The scope of the work is developed, design concepts are defined and design criteria are established. SMUD Electrical Supervising Engineer reviews these in detail and has to approve them before
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(_ detailed design would begin.
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The detailed design packaged is prepared by a design team. All the drawings, calculations and related documents are thoroughly checked O- by persons who were not involved in the design itself. The drawings .
are checked line by line. The check prints are retained for further reference. The group leader reviews and signs off the package before it is submitted to the Supervising Engineer for his approval.
After the Supervising Engineer's approval, the Electrical Design Package goes to the cognizant engineer who reviews it as a part of the complete Mod package and for interfacing with other disciplines. If the design change is important from safety considerations, the packages passes through the PRC before being issued for construction. It may be noted that throughout the design process, the Electrical Staff coordinates with other disciplines, Construction and Operations.
2.3 STRENGTHS OF THE ELECTRICAL DISCIPLINE 2.3.1 The Electrical Staff consists of highly experienced engineers, designers and technicians. Engineers at a supervisory level have, on the average, 15-20 years of power plant experience, out of which 10-15 years are in the nuclear field. Many of these engineers have been at the Rancho Seco plant for an average of five years. Because of steady design work' required for the long term modification efforts like E-Q, Appendix R and NUREG 0737 Electrical Discipline has maintained a large staff
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throughout. These persons are very familiar with the plant, know the procedures, coordinate with Operations &
Construction and produce a very high quality of design.
2.3.2 Technical Direction / Supervision The procedures in Electrical Discipline are well established. Technical direction and guidance is available to new comers. The design team holds joint responsibility for its work. The Project Procedures, Design Guides, .
Design Criteria, Industry Standards, NRC Regulatory Guides, Standard Specifications, etc. are available for use and the engineers, designers and technicians are required to use them routinely.
2.3.3 Checking of Drawings All Electrical drawings undergo a rigorous process of internal checking. The drawing prepared by one engineer is checked by another engineer who has not been involved in that drawing. He checks it thoroughly for all engineering concept & details. The drawing is also checked point to point by blue lining all connections & cabling. The Senior Engineer / group leader again reviews the package and signs ,
off each drawing. After this, the drawings undergo two
() more approvals, one by the Supervising Engineer and the other by the cognizant engineer.
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.2.4 WALKDOWNS OF ELECTRICAL INSTALLATIONS
,(}' 2.4.1 EQ Walkdown All equipment required to meet Equipment Qualification Rule 10CFR50.48 was physically inspected. This constituted about 80% of all electrical equipment. The inspection verified that the actual installation agreed with design requirements and the equipment installed was equipment indicated on design documents.
Extensive independent walkdowns were also conducted by QA to verify results of engineering walkdown. Inspection
). indicated a good match between drawings and actual
] installation. Results of the walkdown, documented with 4
pictures and sketches, are in SMUD files. Data will be included in the Master Equipment List. The walkdown j covered equipment and installations from construction i permit upto present.
2.4.2 Appendix R Walkdown The walkdowns verified all commitments in fire proteption since 1975, i.e., Browns Ferry fire. Verification included a complete walkdown of the entire power block of the plant. The walkdown covered equipment and installations j
' from construction permit upto present. Results of the
( ). walkdown, documented with pictures and sketches, are in SMUD files. The walkdowns indicated a good match between electrical drawings, commitments, and actual installation.
Extensive independent walkdowns were also conducted by QA to verify results of engineering walkdowns.
3.0 ELECTRICAL CONSTRUCTION 3.1 CONSTRUCTION PROCEDURES
- The strength of electrical installation program is found in the 1 ~ detailed installation and inspection procedures. Prior to. starting work on major modification program (1983 Outage), construction Methods and Procedures were developed and issued to be followed for
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all work accompitshed f;y Nuclear Engineering Electrical Construction. These procedures were patterned after the most recent Bechtel Thermal Power Organization (TPO) standards and then modified l for any unique requirements for Rancho Seco. '
TPO standards are the major documents used in the design of the l Nuclear Plants in Bechtel offices in the US and Overseas. They were l developed over a long period of Bechtel tavolvement in the-design and construction of the nuclear plante.
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Prior to issue, SMUD's Construction Methods and Procedures were
() reviewed by the Bechtel staff and then reviewed and approved by the SMUD Electrical Supervising Engineer, Supervisor and the Construction Resident Engineer.the site Quality Assurance All subsequent revisions three SMUD to supervisors.
the procedures have been reviewed and approved by the These procedures have been maintained and updated and have grown directives have changed. and changed as industry practices and NRC 3.2 CONSTRUCTION STAFF
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Further assurance of correct installation can be found in the methods Staff. by which SMUD hires, supplements, and trains the Electrical Since the beginning of modifications program (1978), SMUD has maintained a core staff of electrical field engineers with an average of 36 years experience in power plants, 10-15 of which were in nuclear facilities. During outage periods this core was supplemented of with younger engineers, having an average of five years nuclear experience.
The outage individuals were assigned to and closely watched by the work. experienced core individuals to assure the quality of their more All electrica'l field engineers were required to read and understand SMUD's procedures.
This program is included in the procedures and every electrical field engineer at Rancho Seco has attested to this understanding.
i in the files. Since field engineers This is documented and maintained are the closest to the final product and do serve as the first level of final inspection, and since the Construction Group has maintained and developed excellence within this group, a very high level of confidence can be assured for the final product from this group.
The Construction Department has also maintained a core group of electrical craftmen who nave served as a stabilizing force when major manpower buildups were required.
with the plant and with the evolution of the installationThese individuals have grown procedures.
Serving in their positions of foremen, and general foreman, they have been able to effectively pass on work techniques and requirements to the newer individuals brought on for peak periods.
3.3 INSPECTION PROCEDURE Electrical Inspections Instructions (EII) which are Quality Control Standards for Electrical installations, are developed from Construction MAthods and Procedures.
Construction Inspection Data Reports (CIDRs) are used to documentEII's an all Class 1 and some unique class II system installations. All l electrical documentation is reviewed and approved by the Level III Lead Inspector. l The work of the Quality Control Group is overviewed l by the QA Group which also verifies all the inspection documents. ;
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3.4 INSPECTION STAFF The Electrical Quality Control Department has maintained a core staff of four inspectors totalling 107 years in Construction and
' Engineering Inspection. experience, about 35 years of which were in Nuclear Inspection. The lead inspector has 15 years experience in Nuclear The Inspection Group is supplemented during outage periods inspectors.
with qualified inspectors who are supervised by the staff 3.5 UNIQUE FEATURES OF ELECTRICAL INSTALLATIONS Electrical installation drawings consisting of raceway and equiprent layouts, raceway support drawings, grounding details and wiring diagrams are relatively straight forward and easy to read, understand, and inspect. Electrical systems modifications, while complex in their function are not difficult.to install.
Once the basic electrical system is in place, the only remaining area of concern will be the assurance that the system is electrically correct. When the QC inspection is finalized the installation is turned over to the plant startup testing organization who performs electrical testing in accordance with accepted Standard Test Procedures (STP). Only after this verification and documentation of acceptance, is the electrical system turned over to the plant for operation.
I O The SMUD Supervising Electrical Engineer has always maintained the ability and supported ~the need to quickly and accurately revise installation drawings when field changes are required. The experienced field staff has provided immediate feedback to the design office when a change has been required.
documents to be maintained.This has allowed the quality of the design 4.0 TESTING OF ELECTRICAL INSTALLATIONS 4.1 i NUCLEAR ENGINEERING GENERATED MODIFICATIONS i When construction work is complete the modification is turned over to the Startup Group which writes Special Test Procedures based on requirementa-of 4 Test Specification issued by'Ruelear ingineering.
If testing requirements can be satisfied through the use of e.cisting plant procedures the Startup Group or Nuclear Operations wil". revise
, the procedure as necessary.
4.2 NUCLEAR OPERATIONS GENERATED MODIFICATIONS
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The cognizant engineer is responsible for. issuing the Engineering Change Notice (ECN) and Drawing Change Notice (DCN) as defined in the Rancho Seco Configuration Control Procedure which is used for processing all ECN/DCN packages.
The cognizant engineer is responsible for generating the Special Test Irocedure or revising existing plant procedures to satisfy testing requirements. ,
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4.3 COMMON PROCEDURES All Special Test Procedures must be reviewed by the Plant Review ,
Committee (PRC) and approved by the Plant Superintendent. Prior to PRC review the STP cover sheet will be signed by the responsible Nuclear Operations Superintendent documenting review of technical
-content and the Technical Support Superintendent documenting administrative review. The PRC will determine whether or not the results of the STP have nuclear safety significance. The test
.results which are determined to have safety significance shall be submitted to the PRC for review and to the Plant Superintendent for approval. The PRC Chairman will designate such tests on the cover sheet.
SMUD craft personnel perform the testing under the direction of the Test Coordinator. The Test Coordinator then reviews the results for conformance with Acceptance Criteria. The complete test package is then sent to the responsible Nuclear Operations Superintendent for administrative correctness. The results are then forwarded to the PRC if'results approval is required.
Changes to existing-plant procedures are reviewed by the responsible group supervisor. For procedures which are subject to 10CFR50.59 screening a Procedure Review Checklist is attached and filled out by person designated by the group supervisor. The checklist documents the 50.59 review, identifies the need for verification and validation and identifies what additional disciplines must review
(} the procedure. The checklist is then approved by the group supervisor and the 50.59 screening is reviewed and approved by the group supervisor or a PRC member if the group supervisor is not a member of the PRC.
Procedure changes which do not affect nuclear safety are routed to the PRC Chairman for review and to the Plant. Superintendent for approva..
For procedure changes which have potential safety concerns, as determined by the 50.59 screening, a Safety Analysta Report is written and the entire package goes to the PRC for review and the Plant Superintendent for approval.
When testing is satisfactorily completed the equipment / system is turned over to Nuclear Operations. If periodic testing is required by Technical Specifications then Nuclear Operations personnel write the appropriate Surveillance Procedures. Treventive Maintenance Procedures are generated by the Maintenance Division of Nuclear Operations and scheduled through the Preventive Maintenance Program.
5.0 SURVEILLANCE PROGRAM 5.1 ADMINISTRATIVE PROCEDURE The stations surveillance program is established and controlled in accordance with an Administrative Procedure, AP 303 Surveillance
(} Program.
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AP 303 is formatted in accordance with station policy and practices as detailed in AP 2, Review, Approval and Maintenance of
/~h Procedures. This control ensures biennial procedure review with '
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Plant Review Committee approval of the original and all subsequent revisions for the controlling document, AP 303 and the surveillance procedures.
5.2 SURVEILLANCE PROCEDURES There are five volumes made up of over 300 surveillance Procedures (SP's). These procedures are used to test, in accordance with identified references, the station systems and equipment in compliance with Technical Specifications, Section 4, Surveillance Standards, and other commitment requirements.
12 SP's specifically address " Emergency Power System Periodic Testing". This group is identified as the SP 206 series and includes diesel generator inspections, safeguard equipment tests, nuclear service bus voltage protection calibration and emergency pressurizer heaters energization.
23 SP's specifically address " Emergency Core Cooling Systems". This group is identified as the SP 203 series and includes further safe ground equipment operations such as high pressure injection system
' operation and residual heat removal system operation.
12 SP's specifically address " Reactor Building Cooling Systems".
() This group is identified as the SP 204 series and tests building cooling pumps, motor and systems as described above.
Additional SP's provide testing for operability thereby insuring reliability of those systems an:t equinment required by Technical Specifications and other station ecmmitments.
5.3 FORMAT OF A SURVEILLANCE PROCEDURE Each SP is formatted as to:
Purpose References Limits and Precautions Surveillance Test Procedures
. Acceptance Criteria Enclosures Enclosures provide the support data that ensures consistent gathering of intended data and identifies by job title the required review signatures indicating the acceptance criteria has been met.
The surveillance program is an on going dynamic activity that draws input from operating crews, stations engineers, station technicians (I&C, Electrical, Mechanical) for completion of individual SP's and
() receives frequent review by the resident inspector and other interested parties.
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6.0 HISTORY OF ELECTRICAL MODIFICATIONS
() 6.1 BROWNS FERRY FIRE MODIFICATIONS After the commissioning of the Rancho Seco plant in 1974, the first set of major changes originated from the Browns Ferry Fire. These changes were initiated in the refueling outage of 11/78 - 12/78 and continued and were completed during the refueling outages of 1/80 -
5/80 and 1/81 - 6/81. -
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6.2 EQUIPMENT QUALIFICATION MODIFICATIONS With the publication of IE Bulletin 79-01B, SMUD started working on the equipment qualification. Modifications were implemented in the refueling outages of 1/81 - 6/81, 2/83 - 8/83, and 3/85 - 9/85.
These modifications meet the requirements of 10CFR50.49.
6.3 APPENDIX R/ FIRE PROTECTION MODIFICATIONS Design work on Appendix R/ Fire Protection related modifications was started in 1981. Modifications wera implemented in the refueling outages of 2/83 - 8/83 and 3/85 - 9/83. These modifications meet the requirements of 10CFR50.48.
6.4 TMI RELATED MODIFICATIONS fg Design changes at Rancho Seco were started in 1979, soon after the
(,) TMI accident. The modifications have been implemented starting from the outage of 1/80 - 5/80 and continued thro 3h the outages of 1/81
- 6/81, 2/83 - 8/83, and 3/85 - 9/85.
6.5 MAJOR MODIFICATION OUTAGES Most of the major modifications were installed in the refueling outages of 2/83 - 8/83 and 3/85 - 9/85. Some modifications were implemented in the earlier outages of 1978, 1980, and 1981, but those installations were comparatively minor.
7.0 LER'S ON ELECTRICAL EQUIPMENT / SYSTEMS 7.1 STATISTICAL DATA During the period from January 1983 upto September 1985, total number of LER's for all the disciplines at Rancho Seco was 84. Out of this 18 LER's were associated with Electrical. This constitutes 21.4% of the total. The 18 LER's can be categorized as follows:
Procedural / administrative problems 1 Operational problems 2 Hardware related 11 Design deficiency 4 O
V 8
7.2 RECENT EVENTS
() The following is a list of recent events at Rancho,Sec0 pertaining to electrical equipment and systems:
~
Reactor Trip Breaker Failure (LER 85-06) 4160V Bus UV Relay Calibration (LER 85-07)
Diesel Generator Breaker Cycling (LER 85-09)
Diesel Generator "A" Initiation on RCP Start (LER 85-13)
Nuclear Service Cooling Water Pump Breaker (LER 85-14)
Loose Leads in Relay Panel H3RPB1 (LER 85-15)
Overvoltage Trip of Bus 4A Because of Grid Spike (ODR 85-289) 7.3 ANALYSIS OF THE RECENT EVENTS The events have been analyzed in depth by the Electrical Discipline as well as by the Incident Analysis Group of Nuclear Operations. No generic problem or common trend has been found. It appears that the events were random in nature.
llh8.0 RECENT NRC AUDITS 8.1 EQUIPMENT QUALIFICATION AUDIT In May of 1985, the NRC conducted an audit of Rancho Seco Equipment Qualification Program. The following are the highlights of that audit:
All Equipment Qualification (EQ) files were found to be auditable -
and complete.
All EQ Program procedures were found to be satisfactory.
EQ training records and lesson plans were reviewed and found to be satisfactory.
The EQ Master List was reviewed no deficiencies cited.
All commitments from Safety Evaluation Reports and Franklin's Technical Evaluation Reports were implemented.
The NRC concluded that the SMUD EQ Program met the requirement 2 or 10CFR50.49.
8.2 FIRE PROTECTION / APPENDIX R O
- The NRC audit of Rancho Seco Fire Protection / Appendix R took place in August of 1985. The highlights of the audit are as follows:
9
All Fire Protection Calculation files were found to be auditable and complete.
\-
All Fire Protection Program procedures were found to be satisfactory.
Hot and cold shutdown procedures were reviewed and' walked down with operations and found satisfactory.
Appendix R/ Browns Ferry Fire Modifications were reviewed and found satisfactory.
Alternate shutdown system was reviewed and found satisfactory.
Emergency lights, design and installation, were reviewed and found satisfactory.
The NRC concluded that the SMUD Fire Protection Program met the requirements of 10CFR50.48 and Appendix R. There are no deviations, violations, or open items.
9.0 COMMITMENTS FOR THE FUTURE SMUD as an organization, has fully committed itself to strive for excellence. Nuclear Engineering as a Department and the Electrical Group as a discipline will continue to produce high quality work. There are reasons to expect even better performance because of the following:
()' 1) Nuclear Engineering has been working on an extensive program of procedures and standards. These documents cover administration, design, procurement, licensing, design criteria, design guides, standard specifications, construction and innpection. These documents are becoming effective as they are being finalized.
- 2) Rancho Seco has implemented a root cause investigation program which will minimize reoccurrence of problems by improving feedback of operational problems to engineering.
() .
10
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TABLE OF CONTENTS CONSTRUCTION METHODS AND PROCEDURES Rancho Seco Field Engineers Information Section I Raceway Section II Grounding Section III Cable Installation S Section IV Cable Termination and Splicing Section V Installation of Silicon Foam MaterialsSection VI Plant Fire Barrier, Breach, Removal and Replacement Section VII Installation of Non-Foam Elastomer Sylgard 170 0 Section VIII A Fabrication Procedure for Flexible Boot Seal Section VIII B Installation Procedure for Flexible Boot Seals q Section VIII C Installation of Sleeve Extensions w "Y
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.s TABLE OF CONTENTS I. Construction Drawings II. Prepare a " Work Plan" to include the following III. Work Request j IV. Radiation Work Permit
- V. Equipment and Circuit Clearances VI. Constant Non-Manual Supervision (24-187)
VII. Construction Tracking Report
- VIII. QC Inspection Memo IX. Class I Raceway and Box Installation X. Concrete Cutting-Coring f .
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XI. Fire Stops -
XII. General
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XIII. Turn Over to Start-Up
. XIV. Field Problem Report .
XV. Attachments 9
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PANGO SECO ELECTRICAL FIEID ENGINEERS INFOFMATION ATPAQMENP Electrical Field Engineer certifies that he/she has read and under-stands "The Electrical Field Engineers Infonration" program and the requirements of " Construction Methods and Procedures".
By signature, the Electrical Field Engineer agrees to responsibly inplement the above programs.
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RANCHO SECO ELECTRICAL FIELD ENGINEERS INFOR14 TION p
d i The follcwing general infonnation is intended to.be for use in implementing " Con-struction Methods and Procedures". These procedures govern all Nuclear Engineering electrical construction work at Rancho Seco. Inspection to these procedures is in accordance with the Engineering and Inspection Instructions.
I. CCNSTRUCTI("N DRAWINGS
- a. Pink drawings with the most recent DCN are required prior to starting construction,
- b. " White" drawings should be stanped "For Infornation Only".
- c. " Yellow" . drawings are " Construction Ccmpleted".
- d. Drawings unique to Pancho Seco.
- 1. E-1008 Raceway listing (Ccmputer input data)
(Type - Iength - To & Frcrn) r
/N 2. E-1010 Cable listing (Ccmputer input data)
C (Type - Vias - Channel)
- 3. C-1031 Raceway support type, sequence, and spacing. Field dir=n-sion input required after installation for actual spacing between supports. 'Ihis to be aMM to drawing by DCN.
- 4. C-906 Rigid conduit support fabrication details.
- 5. C-907 EMP ccnduit support fabrication details.
- 6. E-638 - 658 Electrical fire barrier sealing. Details and schedules.
II. PREPARE A "NORK PIAN" 'IO INCLUDE '1EE EDIlmING:
- a. Take off quantities.
- 1. Raceway (E-1008) See Section IX.
- 2. Supports (C-1031) See Section IX.
- 3. Eoxes (E-1008) See Section IX.
- 4. Corebore's See Section X, Example 2 D
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[ 5. Equipment
- 6. Unscheduled terminations and jumpers.
- 7. Identify all electrical cables to be formed and lugged, conduit entries, cable pull-ins, and cable pullovers to or in energized and operating plant equipment. Write individual work requests for these activities (see Work Request,Section III.b.). Should the, operational condition of the plant not allow for these act-ivities to be accomplished at the time the work request is written, return complete work request to scheduling to be in-cluded in outage (planned or forced) file.
- 8. Fire stop breech and repair. See section XI.
- b. Coordinate manhole, ductbank, rebar, excavation and backfill for electrical contractor to install ducts, etc. Civil department is responsible for construction and " Work Plan" input.
- c. Prepare a Bar Chart (Example 1)
- 1. Logical construction sequence
- 2. Estimate crew size / manhours.
/ 3. Layout chart p\ d.
l Review bar chart with labor contractors superintendent.
- e. Submit Work Plan to Scheduling. 1
- f. While preparing Work Plan:
1
- 1. Obtain Purchase Order or Purchase Request number from Design City engineer for equipment purchased by them.
- 2. Order equipment and material not normally stocked in Nuclear Engineer-ing Warehouse or "A" Warehouse. (See stock listing books). Process all field generated Purchase Requests thru Lead Field Engineer. l
- 3. Note'.if work :to be performed is to be in a Radioactive Controlled l Area, a " Radiation Work Permit"'shall be generated as described in '
.Section IV.
, III. WORK REQUEST l
- a. Is issued by Scheduling after drawings are pink and the field engineer submits his work plan for incorporation into the schedule (six week job window).
- b. Individual Work Requests are to be written by the field engineer for all
,Ov electrical cables to be formed and lugged, conduit entries, cable pull- '"
ins, and cable pu11 overs to or in energized and operating plant equipment.,-
Electrical cables requiring forming and lugging will be accomplished -
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under the AP4 clearance procedure. Conduit entries, cable pull-ins, and,. -
pullovers shall be accomplished utilizing EM-187. ' - - - ' '
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-[ c. Work can proceed only after three copies of the Work Request are issued to the field, and the field engineer delivers a yellow ori-
" .O 81 1 cePr ce ce cre1 aee saire suPervi er.
- d. Field engineer should make a copy for his records and Lead Field Engineer Record book.
- e. Field Engineer is responsible to assure that Work Request is com-plete, i.e.,
- 1. Listing of Welding Procedure, Torque Procedure, etc.
- 2. Note the Radiation Work Permit number if applicable.
- 3. A copy of the original W/R is required for issuance of torque wrench to crafts upon request by Contractor.
- f. Field Engineer is responsible to close the Work Request when work is complete and/or include the original copy in Construction Turnover to Start-Up package which is described in Section XIII.
IV. RADIATION WORK PERMIT
- a. Field Engineer to initiate action with Health Physics to issue a permit in a Radiation Area.
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- b. Construction drawings may be used in conference with Health Physics to describe work area along with description of work to be per-formed.
- c. The Health Physicist may require an ALARA meeting if area in which work is to be performed has high radiation levels.
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- d. ALARA meeting will require all crafts concerned to attend Health Physics meeting, in which all aspects of the construction are dis-cussed prior to issue of R.W.P..
'e. Note R.W.P. number on Work Request.
f'. ' Advise Health Physics when construction is complete to close R.W.P..
. V. EQUIPMENT AND CIRCUIT CLEARANCES
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- a. All electrical cables to be formed and lugged, in energized and
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operating plant equipment, will be.the responsibility of the system and field engineer, to evaluate, coordinate and accomplish.
- b. Clearances to form and lug cables in energized and ope'ratin~g plant
' equipment:will be obtained by the field engineer in accordance with AP4. Any field engineer seeking clearances under AP4 must be on the approved list.
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- I c. All electrical cables to be formed and lugged in energized and
('} operating plant equipment must be coordinated with Nuclear Op-N>
erations and a specific work request written prior to any work commencing. This work req ~est must take into consideration all safety implications of the activity. The ECN and 50.59 safety approval process must be in conformance to the "J J Mattimoe memorandum of July 22, 1982 - Authorization Prior.to 10CFR50.59 Submittal for NRC Mandated Changes" (see attached memo, example 8). No tie-in connections to the existing plant will be made, unless the directions detailed in the memo are satisfied.
- d. To validate the approval status of all 10CFR50.59 "Yes" ECN re-quirements, the field engineer will check the latest issue of the 50.59 status log, which is issued by the Nuclear Department.
Should the field engineer determine that the 50.59 is approved, he will submit a copy of the status log for check and then for final approval with the electrical system engineer who will attach the log copy to the connection work request.
- e. Cable pull-ins and pullovers and conduit entries to energized and operating plant equipment will be accomplished under EM-187 (sec-tion IV).
VI. CONSTANT NON-MANUAL SUPERVISION (EM-187)
- .c a. This procedure (see example 3) will be utilized for all conduit
( ) entries and cable pull-ins to energized and operating plant equip-It also applies to pulling new cable over existing energized ment.
plant cable.
- b. A separate work request will be required for every entry, phil-in and pullover required.
- c. The field engineer will schedule and perform the required non-manual supervision.
VII. CONSTRUCTION TRACKING REPORT i
f This is a system to establish daily construction control of the raceway, [
' cable, and termination progress. (see example 4). To support this pro- I gram the field engineer shall: __ i l
! a. Develop logical, workable field packages which contain all documents and markers necessary to install all items within that package.
- b. Monitor progress daily to verify that turned in or reported quantities are accurate and in accordance with drawings.
- c. Turn in reported quantities to the Construction Tracking Department on a daily basis.
i f,)VIII.
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QC INSPECTION MEMO 1- l
- a. The field engineer shall respond in writing to an Inspection Memo cft ;
within one day from the date of receiving the memo. Ifreworkisre-i, .l quired, the work shall be accomplished as soon as reasonably possible.
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Electrical Field Engineers Information g -IX. CIASS I RACENAY AND BOX INSTALIATION i
l h- a. Civil Engineer will design and issue to the Field Engineer unnumbered sketches for each raceway run. Sketches will be accmpanied with C-1031 :
! drawings which will assign hanger supports in sequence, by type as detailed l on the C-906 drawings. 1 l
Field Engineer shall assign a unique SK number to each Civil sketch and l record on the construction Tracking Report. '
4
- b. Revisions to sta;rn.Ls, support sequence, etc., due to field conditions
, shall be coordinated by the Field Engineer with the Civil Engineer and the Labor Contractor.
NOTE: A walk down of the proposed raceway run with the Contractor and the Civil Engineer prior to start of work may eliminate many' prob-lems.
- c. It is the responsibility of the Contractor to furnish a marked-up C-1031
- with the field installed dimensions between supperLs. Field Engineer
- shall verify these dimensions and prepare a D G to the original C-1031.
X. CCNCRE?rE CUITING -CORING
- a. A Concrete Cutting - Coring Permit is required prior to drilling or cut-r -
ting any concrete. (See Exanple 2) .
> b. '1he form shall be filled out by the Field Engineer and Contractor with the necessary information and actual center line of the core layed out
_ for rebar location by the Civil Field Engineer. If scaffoJFing is re-quired, the Field Engirmer shall coordinate.
- c. Field Engineer shall issue the permit to the Contractor with the Civil j . Field Engineer omments prior to the work proceeding.
- d. Upon empletion, the contractor will turn in the cmpleted permit to i the Field Engineer and leave the core at the site for Q.C. buy-off.
XI. FIRE S'IOPS
- a. Fire.Stop breeching and repair will be done under the direct supervision of the Fire Stop Field Engineer and in accordance with the Construction Methods and Procedures.
- b. No work shall be done without his knowledge.
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XII. GENERAL
- a. Beinspection request form (Exanple 5) must be filled out ard processed thru Q.C., if revisions are made to work previously " bought-off". 3;,.
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[ III. TURN OVER 'IO STARP-UP J a. Upon ccupletion of an ECN package, Field Engineer will generate a turnover to Start-up package. (Exanple 6) .
- 1. Obttm fonts fran Q.C. - Turnover number will be assigned by Q.C.
- 2. Fill out all items indicated by Field Engineer and check.
XIV. FIELD PROBLEM REPORP
- a. Field Engineer shall generate a Field Problem Report (Example 7) to ex-pedite obtaining answers from Engineering,
- b. Field Problem Peport shall be processed thru Iead Electrical Field Engineer.
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CONCRETE Cir1TlHC-CURING REQUEST
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- 1. WORK REQUEST NO. DATE 9. CCR NO.
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, 2. , INITIATING DISCIPLINit_ REMARKS:
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- 4. DATE DRILLING REQUIRED: WALL SLAB 1 -
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, 6. REFERENCE ECN, DWCS., NCR:
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j' 7. DESCRIPTION (SIZE, DEPTH, QUANTITY, PURPOSE): . .
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- 12. RESPONSIBLE CCE NAME: EXT.
- 13. DRILLING COMPLETION DATE: ~~
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Ed d Ifl 4% C Dj 1 01-20-84 l Rev. 2 WP0623P j' . D-0109A
)) EM.187 - l CONTROL OF ELECTRICAL PLANT MODIFICATIONS 1
1.0 PURPOSE
.1 To assure the continued safe operation of all energized and operating plant equiptent during modifications perfomed by Nuclear Engineering contractor craftsmen. .
l l
.2 To control access to the above mentioned. components by Nuclear l Engineering's Designers, Engineers, Construction Engineers, Inspectors and i Technicians. l
2.0 REFERENCES
I
.1 MSRC/PRC Meeting No. 91 notes for 11/21/79, PRC Meeting No. 1225 notes for i 12/20/83, MSRC Meeting notes for 1/13/84
.2 ECP-1, 9ancho Seco Configuration Control Procedure f- .3 AP.3, Work Request Procedure
] .4 AP.4, Administrative Clearance Procedure 3.0 LIMITATIONS / PRECAUTIONS.
~~
.1 This procedure is to be worked in conjunction with the Clearance Procedure (AP.4) and in no way supercedes the instructions contained therein. Any work which can be accomplished utilizing the clearance procedure can proceed without the constant non-manual supervision provisions of this procedure.
~
.2 This procedure must be followed to prevent redundant safety systems from e,.... ,
being out of service and to prevent a plant trip. Work shall be restricted to only one channel of safety related equipment at a time.
.3 This procedure shall be used for engineering inspections, temination of conduit, and the " pulling into and coiling of cable" in existing plant equipment. No temination of electrical cable including feming and lugging shall be accomplished under this procedure unless the plant is '"
cold shutdown.
Rev. 2
- d. EM.187/1
- W SeeO -.S. g e q h g-ew , ,
4.0 SPECIAL TOOLS / EQUIPMENT
.1 The following is' required for each Nuclear Engineering construction -
([) modif,1 cation.
.1 Engineering Change Notice (ECN).'
.2 Design Basis Report (DBR) - If Applicable.
.3 Safety Analysis and 50.59 - If Applicable.
.4 Drawing Change Notice (DCNs). '
.5 Work Request (s).
.6 Tools and equipment that will assure safe working conditions to or within the components.
5.0 TESTING / ACCEPTANCE CRITERIA -
.1 Acceptance Criteria
.1 Work will proceed on only one channel of safety related equipment at a time.
7 .2 The Shift Supervisor shall be informed prior to the start of work and
', either the end of the shif,t or completion of the work, whichever is (
sooner. (
.3 The Shift Supervisor retains the authority to stop work at any time
. due to changing plant conditions.
6.0 PROCEDURE ,
.1 The responsible Field Engineer shall initiate a Work Request when work to or within components described in Section 1.1 is required. As a minimum, this Work Request shall contain the equipment identification, location, and type of work that needs to be acommplished.
-.2 The Nuclear Engineering System Engineer shall establish the precautions and . safety requirements accessary during the perfomance of the work
- 4ctivities descr%ed 1m 19te Work Request. These worka w ; . -... ..i.s shall
'be determined based upon the current operating conditions of the plant, the nuclear safety aspects of the components and circuits involved, ano safe installation practices. These requirements and the constant
~
non-manual supervision requirements shall be noted in the " Engineering Requirements" section of the Work Request.
9 Rev. 2 O Ex.187/2 -:D
,e I
< F PROCEDURE (Continued) 22 .
() 6.2 NOTE: (Continued) ,
, NOTE: '
Non-Manual Supervision , shall be provided by Nuclear Engineering " experienced Field Engineers'." These personnel shall supervise and monitor craft personnel working in energized and operating plant equipment.
Qualifications for personnel assigned to non-manual .
' supervision shall include, as a minimum, prior electrical
. construction experience, an ability to read electrical layout drawings and wiring diagrams, and familiarization with proper work practices and site procedures. These Field Engineers shall be listed on the AP.4 Clearance Procedure Authorization List.'
.3 Before starting work, the responsible Field Engineer shall get the approval of the Shift Supervisor and discuss any other current plant condition which would prohibit work from safely commencing. .He shall also define the non-manual supervision and safety requirements listed in the engineering requirements of the Work Request to the Shift Supervisor.
.4 Constant non-manual supervision shall be as defined in the engineering
, requirements section of the Work Request.
.5 Upon completion of the work or at the end of the shift, the responsible jr ' Field Engineer shall advise the Shift Supervisor of the completion or j
status of the work. He shall also ensure the equipment being worked is closed and protected from outside hazards. Fire watch shall be established as necessary.
.6 Steps .3, .4, and .5 above shall be repeated each shift until the work
_-. activity is completed. .
.7 Control of Engineering Inspections NOTE: .
Engineering Inspection - A visual abservation of equipment where:
- 1. No removal of equipment is required.
- 2. No tools ar metal abjects are in Dne persons hand.
- 3. Only involvement is by E'ngineers, Construction Engineers, Inspectors, and Technicians and not trade craftsmen.
- 4. Electrical measurements with meters not allowed.
.1 Inspection for engineering information of energized and operating control panels will only be allowed to be performed by Nuclear Engineering Field and Design Engineer, Inspectors, and Technicians.
t f s O,
Rev. 2 EM.187/3 .
4 e
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PROCEDURE (Continued) s.7 .
2 . To obtain permission to make inspections, the des 42nated engineer (s)
(
shall call the Shift Supervisor and identify the cabinet and type of inspection and obtain his approval, t
. 3 When inspection is complete, the Shift Supervisor shall be notified again. l l
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9 END Rev. 2
- 0* EM.187/4 %~
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EX A M P L E 4-CONSTRUCTION TRACKING REPORT - ""
FROM: Robert Charney
.e DATE:
3.g q TO: Distribution
(/
SUBJECT:
ECN #
This report contains six sections:
EQUIPMENT LISTING -
RACEWAY LISTING CABLE LISTING PACKAGE STATUS RACEWAY QUANTITY REPORT CABLE QUANTITY REPORT (Sections may be omitted if not applicable)
REFERENCES:
%C -- Percent installed--feedback from field engineer and craf ts. Daily, minimum once per week.
FC -- FIELD CONDITION I - Install C - Change--or Connection change D - Delete R - Renumber S - Spare "T0" side
(() V - Repull W - Repull "FROM" side ST -- STATUS 1 - Not issued from construction office
. 2 - Issued to crafts for work 3 - Complete--Indicates % complete on quantity report 4 - Complete--awaiting inspection / final acceptance 5 - Accepted by QC On quantity report note the following:
Stat 1 & 2 -- Totals reflect scheduled length Stat 3 -- Reflects % complete of scheduled length Stat 4 & 5 -- Totals reflect Installed length
~WGd-- E-1006, 1010, tre- E-1026 drawing respectively REV# -- Total number of revision cards issued against the item / number of package revisions issued.
F-ST -- Status of the "FROM" side terminations T-ST -- Status of the "T0" side terminations -
Packages are numbered by the following format:
' (^S
- s l P-000 Pull packages -
T-000 Termination packages E-000 Equipment packages R-000 Raceway packages -
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- ' Exhibit B :
gy A M P t. EI 6 REINSPECTION REQUEST FORM 3" From Construction Engineer Date:
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- 1. Equipment, Raceway or Scheme No. \
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! ENC No. W.R. No.
- 2. Re Megger Re* quired: YES O NO O
- 3. Reason Reinspection is required, and description of change:
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- 4. Items to be inspected: l f- 5. ODrawingNo. .
1008 Sheet No. O toto Sheet No.
O1o28SheetNo. 1o31 Sh .e No.
Others
- 6. Inspected and accepted by Date
- 7. ONotaccepeable. Reason:
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- 8. Reinspection satisfactory accepted by Date NOTE: This request should be submitted to Inspection Department prior to any re-work so that cards and documentation can be pulled from the completed file and returned to field engineering if necessary. .
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- TRANSMITTAL RELEASE FOR TEST ECN'N0:
TASK / MOD.#
f0: START-UP 7 W.O. NO.
CONTRACTOR / SUBCONTRACTOR:
W.R. NO. /
SN ATTACHED HEREWITH IS TURNOVER NO. Q .C .
FOR YOUR REVIEW AND ACTION.
PLEASE ACKNOWLEDGE RECEIPT ONLY OF THIS PACKAGE.
SYSTEM DESCRIPTION f
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REVIEWED BY:
LEAD DISCIPLINE QCE DATE h NI ~
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WELDING WALK-DOWN WITH START-UP AND QC RECEIVED DATE YES
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TURSOVER QUALITY VERIFICATION
? DOCUMENTATION PACKAGE CHECKLIST J '
() SYSTEM DESCRIPTION
NO.
NOT DESCRIPTION INCL. APPL. REMARKS
- 1. List of Dwgs., Sketches, Diagrams and other documents which identify the system, subsystem or other item turnover boundaries.
- 2. Construction Quality Verification Documents.
- 3. Final Acceptance For Turnover Inspection Record.
- 7F 4. List of Incomplete Construction i
Work Items.
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- 5. List of Incomplete Construction Test Items. ,
- 6. List of Incomplete Supplier Quality Verification Documents. '
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- 7. Copies of Open Nonconformance Reports.
- 8. Others (Specify). .
Completed Turnover Quality Verification Documentation Package Reviewed.and Accepted.
BY DATE Turnover QC Coordinator s
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g( fCTRICAL DATE DATE INST. DATE DATE
! MECH. DATE -
DATE WELDING D/.TE _
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TURNOVER APPROVAL
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, FIELD PR03LEM REPORT Ex AMPLE 7 REQUEST NO.:
f TRA?;5'ilTT2L DATE:
.O RESPONSE DATE:
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LOCATION: EXT: LOCATION: EXT:
DATE REOUIRED: DATE PROMISED:
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ECN NO.: ORANING NO.: TASK NO.:
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4 FIELD DISCIPLINE CONCURRENCE CIVIL MECH. ELECT.
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s'-Adwh"54 6 ECN No. LOG NO.
SACRAMENTO MUNICIPAL UTILITY DISTRICT
,e OFFICE MEMORANOUM 1
O 70: R J Rodriguez /D G Raasch 04rg, July 22, 1982 FROM: J J Mattimoe, MSRC Chainnan cus.srcri AUTHORIZATION PRIOR TO 10CER50.59 SUBMITTAL FOR NRC MANDATED CHANGES Section 50.59, " Changes, Tests, and Experiments," of 10 CFR Part 50, " Licensing of Production and Utilization Facilities," requires the holder of an Operating License to furnish to the Commission a written safety evaluation when he desires to make a change to his facility involving a change in Technical Specifications or an unresolved safety question. NRC mandated changes (example: NUREG 0737 modif'ications) fall in this category and must be preceded by a Technical Specification authorization . submittal. This submittal consists of two parts: the proposed revisions to the Technical Specifications and support documentation for the proposed changes.
7 The Quality Assurance Program does not permit issuing a work request 4 via AP-3 until the MSRC Chainnan has authorized work initiation via
.O~ aCI No. s requirements.- The obvious impass must be circumvente.1 or NRC mandated changes cannot comence. Limited work authorization is to be used to initiate a work request to allow work to comence. The work is limited to NRC mandated changes only_and._np_ tie-in_to an_
operatingJ ystem will b.e p_ermitted. Prior to the,. tie-in, the.l_icense change must be approved by f.he NRC.
cc: P. Oubre' a G. Coward ,
T. Perry J. McColligan J. Aurkovich ..
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RANCHO SECO NUCLEAR GENERATING STATION CONSTRUCTION METHODS & PROCEDURES 2
RACEWAY 4
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CONSTRUCTION METHODS AND PROCEDURES i' TABLE OF CONTENTS f
, RACEWAY t
1.0 General 2.0 3able Tray 4 3.0 conduit 4.0' Outlet and Junction Boxes 5.0 Terminal Boxes 6.0 Duct Bank g 7.0 Details l
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INSTAILATION OF PACWAY
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% 1.0 1.1 Insofar as practical, the electrical drawings are diagranmatic in form; therefore, it is the responsibility of the electrical field engineer to supplement the design drawings with additional information as may be required.
1.2 Incations and dimensions of openings through floor slabs and walls to acccmmodate cable trays, bus ducts and conduit risers into electrical equignent; and embedded conduits, and the location of embedded conduit stubou's c and stubups are shown on the Civil-Structural drawings.
1.3 These construction notes and procedures shall beccme effective as of April 1, 1982. Direction for work prior to this date can be found on E-701.
1.4 The raceway installation card gives the size, type and destinations of the raceway. The cards are generated by the CRIS program upon issuance of the E-1008's. Cards will be issued to the field imnediately. It will be the responsibility of the electrical field engineer to process change if necessary and issue to inspection upon ccrupletion. Inspection
, will turn over ampleted cards for ccInpletion input to CRIS.
1.5 When installation of new raceway or equignent requires the reroval or relocation of existing raceway support (s) a work request shall be written 7 defining the specific support (s) the required action necessary and the
/ ('L J time required to ccrrplete the work.
2.0 CABLE TRAY AND BUS DUCT 2.1 All cable trays and bus ducts shall be routed and shown on the electrical raceway drawings (E-700 series), and installed and supported as shown on the Civil-Structural drawings. The latest DCN must be used for install-ation. The installation tolerance will be shown on the individual instal- 6 lation drawings. Clearances frcm hot pipes will be in accordance with paragraph 3.30 of this section.
2.2 Trays are identified on the electrical layout drawings by unique identify-ing numbers. This number should be permanently fixed to the' tray at each end on both side rails (where both are visible), at all tray to tray June- 4 tions, and on each side of every wall the tray penetrates. 'Ihe number should be, if possible, visible frcm the floor. See cable and raceway identification section (cable installation) for color marking of tray.
2.3 Tray and bus locations are dimensioned frca column centerline or wall surfaces to the exterior edges of nearest tray siderail or bus enclosure, and elevations are to the bottcm of the tray siderails or bus enclosure.
Unless otherwise specified on pink drawings, tray and bus supports will be spaced a maximum of 8'-0" frcm each other.
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2.4 Standard 12" radius cable tray fittings shall be used unless'other- 6 wise specified on the raceway layout drawings.
2.5 All tray joints shall be trade with tranufacturer's recormended splice 1.f' p plates and bolting hardware. Nuts shall be torcued in accordance with d manufacturer recmmended values. When trays of different manufacturers are required to be joined together, splice plates will be approved and/
or designed.by the structural design engineer.
2.6 Adjustable fittings may be used in cases where standard fittings can-not be successfully applied. Field engineering approval is required.
2.7 Where straight sections are required to be shorter than standard sec-tions, the standard section shall be cut square, and splice bolt holes drilled to accortodate a standard splice plate. Cut edges and holes 6 to be dressed smooth and painted with a zinc paint (Sherwin-Williams spray-on 00740) or District approval equal. -
2.8 Trays shall be free of burrs, sharp edges and other abno'rmal pro-trusions. Any such defects shall be corrected before installation.
2.9 When welding is required for raceway supports, the finished weld and surrounding uncovered metal shall be cleaned and painted with zinc
, rich paint.
2.10 Welding in conjunction with Class 1 raceway support installation shall be performed by certified welders. Technique and final weld must be signed off by .he welding inspector.
O 2.11 Trays shall not be fastened to Class 1 equipment which is not qual-ified for a rigid raceway connection (see 3.24, this section) . 6 2.12 Tray / bus and their support systems shall not be used to support any item not included in the original design calculations, unless the 6 existing support is analyzed and/or qualified for the new intended use by the Civil / Structural desic)n group.
- 2.13 All cable trays subject to vibraticn or located at structural ex-pansion joints, shall have a gap of approximately 3-inches between sections. A #4/0 AWG flexible ground cable connected to the tray side-rails, shall be provided across th'e gap.
2.14 Cable tray and bus duct stq;ru.-l.s shall be installed true, level, plumb, and be securely fastened in accordance with drawings and mar 1=+.urers reccrmendations.
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2.15 Tray ends shall be fitted with dropouts or blind ends.
2.16 Cable trays penetrating walls, floors or ceilings dividing different fire zones shall have fire stops installed per the E-638 drawing series. All new barriers installed after June 1983 will be the silicen 6 foam type qualified for the specific opening. All flamastic barriers breached after this date will be ::epaired utilizing the retrofit silicon foam method defined on the E-638 drawing series.
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2.17 Af ter cable installation, covers shall be installed on each top tray in a stack where the stack runs below floor gratings, or in open areas subject to falling debris. Vertical trays that pene-d". trate floors in exposed areas (i.e., walkways, corridors or other id *O-
.r] areas accessible to all plant personnel on a daily basis), shall .
have cover installed for a height of 8-feet minimum above the 6 floor. Tray covers shall be firmly secured to trays and fittings by means of removable screws or clamps. Temporary, non-conductive protective tray covers shall be utilized when working in close prox-imity.to tray systems.
2.18 Tray shall be grounded as defined in the grounding portion of these methods and procedures. Conduit connection to tray for ground fault 6 current return'will be in accordance with paragraph 4.3 of the grounding section.
2.19 Where cable leaves the tray system over a siderail, a section of 2" EMT conduit cut full length on one side, with all burrs and sharp edges removed, will be installed over the siderail and secured to 6 the tray siderail lip with.round head bolts or self tapping screws.
See detail at end of this section.
2.20 Manufacturer supplied cable tray transition sections shall be used where tray of different dimensions are joined or where they come 6 together to allow for cable " spill out".
j 3.0 CONDUIT ,
'[- ' l' 3.1 Conduit to be installed shdll be of the size and material specified on the raceway installation. card.
3.2 Rigid steel conduit shall be hot dipped galvanized in accordance with ANSI Standard No. C80.1 titled " Specification for Rigid Steel Conduit Zine Coated" and UL 6 titled " Rigid Metal Conduit". Fittings shall be-in accordance with ANSI Standard No. C80.4.
3.3 Electrical metallic tubing (ENT) shall be electrogalvanized in ac-cordance with ANSI Standards No. C80.3 titled " Specification for 1 Electrical Metallic Tubing, Zinc Coated", and Underwriter's Labor-atories Standard No. UL 797-12. Fittings shall be in accordance with ANSI Standard No. C80.4.
, 71ttings 'for T 71.7. shallte raintite compression type and installed
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~3. 4 in such a manner as to insure electrica1' continuity.
3.5 E.M.T. shall be used for Class II conduit systems located inside the Auxiliary, Diesel, CAS and NSE Buildings, in sizes up to 2".
' This shall be installed and inspected in accordance with the C-907 drawings. Where Class II rigid conduit continues from the outside 6
' to the inside of the above areas, it may continue as rigid inside if supported in accordance with C-906 details. EMI that must be run inside plaster walls will be supported by the field engineer in accor-
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dance with the National Electric Code. All Class II conduit larger than 2" installed in the above areas will be installed in accordance '
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with Class I criteria. Utilizing C-1031 and C-906 drawings. -
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3.6 E.it.T. shall be used for Class II conduit systems located in the Turbine, (dry areas only), PAP, Training and Records Buildin), Administration, Bechtel, Warehouses, and other plant buildings where seismic installation is not a requirement. Supports are the responsibility of the field engineer ac- to design and locate, in accordance with the National Electrical Code. J 3.7 Conduit supports for Class 1E conduit systems are the resoonsibility of the Civil / Structural group to design and locate as shown on the civil drawings C-1031 and C-906 series. Each support will be marked per the C-1031 with approved markers. Finished dimensions on the C-1031, shall be accurate within + 6" as measured from the centerline of each support.
3.8 All raceway and supports inside the containment building shall be installed and inspected in accordance with Class I criteria.
3.9 All conduit installed in the tank farm will be rigid steel installed and in-spected, in accordance with Class I criteria. All other Class II conduit in-6 stalled outdoors and in the Turbine Building (wet areas) will be rigid ste(1, supported as directed by the field engineer.
3.10 Class II conduit shall be held in place with one hole straps, conduit clamps, unistrut clamps or U-bolts. Use insert plates or embedded unistrut where 6 available. For anchoring supports to concrete use District aporoved anchor bolts, installed per CC-12.
3.11 All conduit bent in the field shall have standard or long radius bends as shown on the drawings or as directed by the Engineer, and shall be free from kinks, indentations or flattened surfaces. The conduit shall be bent cold to f prevent damage to the galvanized coating. Burrs and sharo corners at the end O
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of each conduit shall be removed with a tapered reamer. '
t 3.12 Exposed conduit runs shall be installed in a neat and workmanlike manner with all runs generally parallel or at right angles to walls, structural mem-be,rs and ceilings.
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3.13 Conduit ends shall be cut square, threaded, (where applicable), and reamed to to remove burrs and sharp edges. Field threads shall be of the same type 6 and lengths as factory threads. Running threads shall not be used.
3.14 Changes in direction of conduit shall be made with adequate radius bends.
Where two or more conduits are grouped in the same plane, all bends shall be uniform. In no case shall the conduit radius be less than soecified in the National Electrical Code and must be greater if necessary to meet the manufacturers minimum bending radius for the cable to be installed.
~3.15 When rou~ ting conduit on vertical supports designed for future capacity, route conduit at upper most portion of support if entering from above and lowest portion of support if entering from the bottom. In all cases maximize useful space on all supports.
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3.16 Where exposed conduit elevations are shown on dwg's., the installation tolerance shall be plus or minus two-inches. For embedded conduit that is dimensioned where it enters and leaves concrete, the tolerance shall be plus I
- or minus one conduit diameter. If a closer tolerance is required for spec-ific conduit or area, the allowable tolerance shall be shown on the draw-f
~ ings.
3.17 Drilling, punching, or flame cutting of structural steel members is pro-hibited unless shown on structural support drawings. Flanges of miscell-aneous steel members may be drilled or welded for conduit support, pro-viced that the holes or welds are located on gage lines. (Acceptable 6 flange drilling dimension found in steel shape handbook).
3.18 Conduit shall not be directly welded to supports, rebar or structural steel.
3.19 Conduit runs shall have no more than the equivalent of 3-90' bends and shall not exceed 200 feet between pulling points,. unless calculations are made to determine that allowable cable stresses are not exceeded. Add-itional pull boxes shall be used where required to facilitate pulling of the cables.
3.20 Miscellaneous small fittings "c" condulets, in line pull points, etc., for conduits are not shown on the drawings and shall be the responsibility of the electrical field engineer to install to facilitate the cable install-ation.
3.21 Where possible, conduit shall be installed so there will be no traps to f collect condensation, but where condensation is unavoidable, install box or 6 Q fitting drains.
3.22 Conduit expansion fittings such as Crouse Hinds type "XJ or flexible met-allic conduit shall be used at all structural expansion joints 02 "AX-DX" expansion fittings or (District approved equal) shall be used in concrete, Class I duct banks where expansion fittings are necessary. 6 3.23 Conduit connections to all electrical equipment (other than defined in 3.24) subject to vibration or removal shall be made with liquidtight flexible conduit type U. A. sealtight or' L. A. liquidtight. Length to be 12" minimum 6 to 6'-0" maimum.
3.24 Entry to freestanding Class IE equipment should be made with liquidtight flexible conduit type U.A. sealtight or L.A. liquidtight and fittings in in accordance with the following requirements: ,
Conduit' Size En. Length Max. Unsupported Length 3/4" 12" 5 ft.
1" 12" 5 ft.
li s" 18" 5 ft.
2" 18" 5 ft.
3" 24" 5 ft.
4" 24" 5 ft.
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Deception: Rigid steel conduit may be used if the Class lE equip-ment has been qualified using rigid steel conduit, and the conduit, is installed in exactly the same way as that used in qualifying the g equignent.
When used in conjunction with rigid steel conduit, the max.utum un-suppv1.i.ed length of rigid conduit and 5 feet of flexible conduit nust not exceed the following:
Conduit Size Maximum thsupported ~Iength j-3/4" 7'-6"
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1" 7'-6" l" 7'-6" 2" 7'-10"
-3" 8'-6" 4" .
8'-6" 3.25 Openings in non-fire rated outer walls of buildings through which conduit, cable tray, or bus pass, shall be effectively sealed after installation to prevent infiltration of air and moisture, dust and debris.
3.26 Conduit entrance to boxes and equipment in outdoor areas shall be by Myers screw tight hub,- with sealing "O" rings similar to T & B f Cat. #5263-5270 or District approved equal.
O 3.o au c.dute - are- shau -1y with the ap-riee.
National Electrical Code requirements for that class.
3.28 When the design drawings require conduit to be "ebe A ued in place",
conduit will be cut back to the closest threaded fitting for rigid conduit and to the closest stpport for EIE - end caps to be instal-led.
3.29 Ends of spare conduits shall be plugged or e= W for future use. .
3.30 Trays and conduits shall be kept a reasonable distance from heat sources such as steam piping, steam generators, boilers, high and low pressure heaters and any other actual or potential heat source.
Trays and conduits will be installed no closer than 12 inches above
- the top "Mie an hat pipes from 1408 F to.250' F and la inches above the top insulation on hot pipes frca 2518 F to 500'F (tenp- 6 erature is measured from the top of the insulation), where the trays and conduits are crossing pespidicular to the pipes. When running parallel above pipes, these distances should be increased by 6 inches. All cases of heat sourm proximity should be care-fully evaluated and supplemental heat shielding used if necessary.
3.31 Conduits shall be cattinuous from outlet to outlet and from outlets to pull or junction boxes and shall be secured to all boxes with y locknuts and bushings, in such a manner that each system shall be ,'
electrically continuous throughout. '
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3.32 Bushings with insulated throats or hubs shall be used at termination of 6
all steel conduit.
3.33 Embedded conduits shall be placed so that space between two adjacent con-3 p duits or layers is as shown on the electrical drawings but in no case less d than 1 times the size of the coarse aggregate.
3.34 All conduit in floor slabs, or embedded in concrete shall be hotdipped gal-vanized, rigid steel with galvanized couplings. The threadt, completed joints and wrench marks, shall be coated with zinc rich cold galvanized com-
, pound. The joints shall be tightened securely to prevent the entrance of moisture, concrete or other foreign material.
3.35 When Erickson couplings or unions are required to be embedded, the coup-lings shall be covered with two layers of scotch 33 tape or (District approved equal) half-lapped.
3.36 All conduit stub-ups shall be terminated with rigid steel coupling, flush with top of finished floor unless othenvise noted. Pipe plugs to be in-stalled to protect coupling threads.
3.37 All embedded rigid steel conduits and fittings shall be held securely in position while the concrete is being placed. The ends of conduit shall be sealed in a District approved manner to prevent entrance of concrete or other foreign material and also to protect exposed threads where required.
3.38 When conduit penetrates a concrete or masonry wall 'or slab, the-area bet-ween the outside of the conduit and the cored hole will be sealed the full length of the penetration with a pre-mixed, non-shrink grout, a Dis-7 (' trict approved epoxy grout, or a sand cement mixture capable of providing the same fire rating protection as the wall. This grout material is not considered to be of any structural value; therefore, testing, documentation, etc., is not required.
3.39 Approved conduit markers shall be affixed to conduit at the beginning and end of run'and where conduit passes through walls or floors, both sides.
Markers should be visible from finor if possible. See cable and raceway identification section (cable installation) for color marking of IE conduit.
3.40 All conduit penetrating walls, floors, or ceilings dividing different fire zones shall have silicon foam fire seals installed in accordance with E-638 6 drawing series.
3.41 When unistrut support installation requires the use of angle fittings, assure that the standard factory fittings are1 tot bent to fit odd angle 6 requirements. When a non-standard angle fitting is required, use cold bend A-36 straps of 2" X k" bent into fitting angles with inside radius of 3/4".
3.42 When installing base plates on concrete, only gaps greater than 0.06 inches need to be shimmed. No action is required if a gap is less than 0.06 inches provided that all bolts have been tightened and torqued as .per requirements 6 of EII CC-12 or manufacturer's recommendations. For gaps k inch or greater j epoxy grout, dry-pack, or shimming can be used.
Unistruts, when bolted directly on concrete surface, require no shimming i
- ]k provided that bolts have been torqued to required values and there is no l
apparent instability. -
W 4.0 OUTLET AND JUNCTION B0XES 4.1 Junction boxes are identified on the drawings by number only and are e fully described on electrical drawings (E-1008 series) and raceway
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\_s cards. Article 370 of the National Electrical Code specifies min-imum requirements.
4.2 Outlet boxes and fittings shall conform to Underwriters Laboratories Standard No. UL 514 titled " Outlet Boxes and Fittings".
4.3 Boxes located in indoor dry locations shall be constructed of hot-dipped galvanized steel to NEMA-1 rating.
4.4 Boxes located outdoors and in moist locations shall be constructed of hot-dipped galvanized steel to NEMA-3 rating.
4.5 All fabricated boxes shall be per applicable NEMA standards.
4.6 All NEMA-3 boxes shall have a removable cover with gasket.
4.7 Box covers, barriers and extension rings, where required, shall be of the same material and thickness as the associated boxes.
4.8 Galvanized steel gutters with screw-fastened covers and no knock-outs may be used for pull boxes and junction boxes. Gutters used outdoors or in moist locations shall be hot-dipped galvanized and with gasketed covers.
,r 4.9 Junction boxes will be' identified with a permanently installed and ap-proved label per applicable drawings.
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4.10 Seismic supports are required only for those boxes which are. part of 6 Class IE raceway system. For support details see C-906 and C-907 drawings.
4.11 Field Engineering may increase the box sizes shown on the drawings to a larger standard size, as listed, to facilitate installation /pur-chasing. DCN's must be prepared and approved prior to installation.
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4.12 Methods for sealing spare holes, cut-outs in junction boxes:
, NENA-1 TYPE - General Purpose, Indoor a.) All round holes to be sealed with type KO seals (snap-in) ~
or equal.
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b.) All oblong cut-outs to be sealed with a plate (min. thick-ness same as box), cortpletely covering the cut-out and se-cured by roundhead bolts with heads facing the interior of the box.
NEMA-3 TYPE - Weatherproof, Outdoor / Moist Iccations a.) All holes and cut-outs to be sealed with an inner and outer disk or plate (min. thickness same as box), using neoprene gasket and clanped with a centered bolt.
4.13 'Ib prevent inplosion of junction boxes and equipment enclosures inside the containment during a design basis procedure transient or during the IIRP, holes must be provided for adequate venting and pressum equalization of junction boxes and equipment enclo-sures in ac Trdance with the following:
Volune of Box W ed Hole Size (IN3) _
(Inches)
Up to 600 .5 1300 .75 2300 1.C 5000 1.5 9000 2.0 14000 6 2.5 20000 3.0 35000 4.0 60000 5.0 Hole sizes 4; inch diameter and larger must have the opening pro-tected to prevent entrance of rodents.
i Holes shall re located in the bottcrn surface of junction boxes. !
If vendor supplied junction boxes and/or equipment enclosures have been qualified, try test or wrified analysis, te viumuni the effects of project specific design basis pressure transients without venting no additional venting is required.
5.0 TERMINAL BOXES 5.1 Terminal boxes are either field purchased, vendor furnished, or field fabricated.
The following notes apply to field purchased or fabricated terminal
- (V~) boxes.
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5.2 Terminal boxes are identified on drawings and are fully described on electrical input sheets (E-1008, E-1010, or E-1028) and raceway installation cards as to type and size. Article 370 of the National Electrical Code specifies the minimum requirements.
' (v) 5.3 Terminal boxes shall be as follows:
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- a. NEMA-1 construction for dry indoor locations; hot-dipped gal-vanized.
- b. NEMA-3 for outdoor and indoor locations; hot-dipped galvanized.
5.4 Terminal box covers shall be held closed by external screws. Cover shall have a neoprene gasket.
5.5 Terminal boxes shall be identified with a permanently installed and approved label per applicable drawings.
5.6 Terminal boxes shall have a removable metal panel for mounting ter-minal blocks. Where the size of the box and or the location of the .
components do not allow for the insi.alisticn ci back plate, holes D shall be drilled and tapped then sealed from the outside with silicon seal or other District approved water seal.
5.7 Terminal blocks within boxes shall be mounted in accordance with applicable wiring diagrams in approximately the same location as shown on the drawings.
5.8 Seismic supports are required only for those boxes which are des-p'd. ignated Class 1, or others installed over or near Class 1 equipment or raceway. For support details, see applicable drawings.
6.0 DUCT BANK 6.1 Underground conduit shall be as specified on drawings.
6.2 Undt.rground ducts shall be PVC type D3 of the size shown on the draw-ing, and are to be encased in concrete. These ducts shall conform 6 to Western Underground Specification 3.1 and ASTM D-2750-68. Minimum 4'-0" radius shall be used unless otherwise noted on drawings.
6.3 Transition points where horizontal duct:: rise to vertical stup-ups, shall be hot-dipped galvanized rigid steel conduit with galvanized couplings. These bends shall have a minimum 36" radius , unless other-wise noted on drawings.
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6.4 All ducts shall be swabbed clean before installation. Spare ducts 6 shall be plugged at both ends.
6.5 Conduit runs stacked vertically shall have staggered joints except at sweeps and transitions. Conduits and spacer cssembly are to be firmly secured and tied down to prevent displacensnt or " floating" of the conduits as the concrete is placed. No wood shall be left in the concrete encasement or backfill.
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6.6 Spare ducts shall be included in the duct banks as indicated on the drawing details.
,- 6.7 Adaptors necessary for the transitions from metallic conduit to jf3 non-metallic conduit shall be recomuended by the manufacturer and U compatiable with the non-metallic conduit used.
6.8 Electrical duct banks shall be identified by adding a red concrete coloring dye to the top of the duct bank immediately after pouring.
A thin plastic warning cover shall be installed 12" above buried conduit not encased in concrete.
6.9 After encasement and backfill for the conduit is completed, draw through each conduit a mandrel as approved by the field engineer.
A brush shall not be used in any plastic conduit. A 1/8 or 3/16 inch diameter polypropylene pull rope shall be installed and left in all ducts. Exposed ends of ducts, other than in manholes, shall be sealed until used.
6.10 End bells or ground bushings with insulated throats shall be used on all conduit entering manholes.
6.11 Underground conduit shall be uniformly sloped between pull boxes or manholes, unless otherwise shown on drawing. To provide adequate drainage, a slope of (3) three-inches per 100 feet is recommended. -
6.12 Reinforcement steel shall not be run between conduits in any duct bank runs.
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v 6.13 Conduit runni'ng through equipment foundations shall be rigid steel.
6.14 Conduits. entering buildings from the outside (manholes, pullboxes, 6
etc.) shall have a silicon foam water seal installed in the out-side end of the conduit.
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III-4 Ell No. EC-2 Rev. 5 RANCHO SECO UNIT NO. 1 Page 1 of 12 E NGINEERING f.ND INSPECTION INSTRUCTION (El!)
Effective Date: 10-16-84 TITLE: INSPECTION OF RACEWAY SYSTEM
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APPROVED BY ITu e ng i ne'e r'i esident Engineer DATE 9 Z-[
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APPROVED BY om. , ,,,
Quality Xssurance Si e Supervisor DATE /d [f/'
PREPARED s .-
BY db % e DATE R LS. /4 n,,, i ; ev c ~, * - i . ip ., , ; ~ ,- mg 1.0 PURPOSE The purpose of this Engineering and Inspection Instruction is to outline a method of inspection and Inspection criteria to assure that all classes of raceways and supports in all areas have met all procedures, notes, de-tails and latest drawing requirements prior to release for cable pulling.
2.0 SCOPE The scope of this Engineering and Inspection Instruction is to provide
) instrucitons to the Quality Control Engineer to perform inspection of raceways including conduits, cable trays, bus ducts, Junciton boxes and supports.
3.0 ABBREVIATIONS Construction Engineer . . . . . . . . . . . . CE Quali~ty Control Coordinator . . . . . . . . . QCC Quality Control Engineer. . . . . . . . . . . QCE Construction inspection Data Report . . . . . CIDR Nonconformance Report . . . . . . . . . . . . NCR Drawing Change Notice . . ......... . DCN National Electrical Code. ..... . . . . . NEC quality Assurance Procedure . . . . . . . . . QAP t
Supplemental inspection Data Report . . . .. . SIDR
4.0 REFERENCES
4.1 SMUD Construction Methods and Procedures, Section 1. - Raceways 4.2 Raceway Installation Drawings (E700 and E1008 Series) 4.3 Raceway Support Drawings (C800, C900 and C1031 Series) 4.4 NEC as a guideline 4.5 IEEE 384 and 422 as a guideline .
' EII No. EC-2 Rev. 5 Page 2 of 12 4.6 QAP 20 - Quality Control Instructions (CIDR) i l(, ' 4. 7 NEMA and UL Standards (for junction boxes) -
4.8 QAP 17 - Nonconforming Material Control
]_ 4.9 IEEE 384 Paragraph 5 as a guideline 5.0 CENERAL 5.1 The QCE shall initiate a CIDR based on the specifications, drawings and EII G-4.
5.2 The QCE shall inspect the wo-b in progress and finished work to ensure it is in accordance with the lates. copy of the DCN and performed in a workmanlike and professional manner.
5.3 The SIDR shall be stamped on .he back of the installation document by the Card Control Coordinator unen the back of termination card is
< jhg initialed and dated as required by all responsible parties. They will he the permanent record of the acceptable installation of the items i
described on the installation document (Exhibit 7 of EII G-4).
5.4 The QCE shall document acceptable raceways on the inspection back portion of raceway card, date and initial when completed. If not acceptable, the QCE shall note the discrepancies on the transmittal form and cards 4
and return them to the CE for field correction. If acceptable, the trans-2 mittal shall be returned to the CE with " Accepted" notation. Cards shall
, be accepted when in compliance of Para.1.4 of Construction Methods and
, Procedures titled Raceway.
6.0 PROCEDURES 6.1 , INSPECTION: Raceway systems shall be inspected by the QCE to verify ,
the equipment and installations are in accordance with the drawings, i
specifications, procedures, standards and codes as applicable. In-spection shall include but not be limited to the following criteria:
6.1.1 CENERAL
' 6.1.1.1 Before work start =, assure that adequate precautions have been taken to prevent damage to existing systems
- u d equipment during installation.
6.1.1.2 Equipment and work areas shall be kept clean and free of debris and . foreign material per EII EC-1 and QAP 23.
6.1.1.3 Cable shall not be installed in a raceway until the i
, raceway is inspected and accepted by the QCE unless otherwise approved by the cognizant Engineer.
6.1.1.4 7' deviations from the prescribed methods or inspec-r"' tion criteria are found, then the affected items are (h '
nonconforming and must be reported on a discrepancy memo or NCR per EII G-2.
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Eli No. EC-2 Rev. 5 Page 3 of 12 6.1.2 WELDING C(: !
6.1.2.1 Welding in conjunction wi th raceways, ra,ceway installation and supports shall be performed by certified welders and inspected and accepted by the Welding QCE prior to inspection and acceptance by the Electrical QCE.
6.1.2.2 When welding is required, the finished weld and uncove' red metal shall be ground clean and painted with zinc rich paint.
6.1.2.3 Welding of conduit is prohibited.
6.1.2.4 When welding is to be done, proper protection shall be provided for existing equipment.
6.1.3 CABLE TRAYS / BUS DUCTS (Exhibit #4 of Ell G-4) 6.1.3.1 Cable trays, bus ducts and supports shall be in-stalled true, level, plumb and securely fastened.
Location dimensions of trays and ducts shall be measured from the nearest exterior side or bottom surfaces of the tray or duct.
6.1.3.2 Where straight sections are required to be shorter than standard sections, the standard section shall
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i be cut square and splice bolt hole shall be drilled.
Cut edges and holes shall be dressed smooth and painted with zinc rich paint.
6.1.3.3 All members of trays, ducts and supports shall have smooth surfaces, free of burrs, projections and sharp edges.
6.1.3.4 All Joints shall be made with manufacturer's recommended splice plates fastened together with appr6ved bolts, each of which is. secured with a locknut .nd lockwasher. When trays of different manufacti rer's are requi red to' be Joined together, splice p atts will be designed and approved by the cognizan Engineer.
6.1.3.5 Fittings shall not be cut nor adjustable fittings used, where standard fittings cannot be success-fully applied, without first obtaining cognizant Engineer's approval.
6.1.3.6 . Expansion type fittings and flexible ground cable, A where required, shall be installed when tray crosses QS structural expansion joints and shall have a 3" gap r1 minimum between trays.
{(') 6.1.3.7 All splice plate bol ts shall be torqued wi th a torque -
wrench setting as suggested by the tray n:anufacturer.
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EII No. EC-2 Rev. 5 Page 4 of 12 6.1.3.8 Supports shall be provided beneath horizontal runs
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(g of tray within three (3) feet of all fitting _
connections and spacing between supports shall be 8'0" maximum unless otherwise approved by the cognizant Engineer.
6.1.3.9 Trays shall not be fastened to any equipment which requires seismic qualification.
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6.1.3.10 Cable trays shall be grounded at both ends and at 100 feet intervals.
6.1.3.11 Fire stops shall be installed in trays per drawing E-638 Sheets 1 and 2 where trays penetrate floors or walls dividing fire areas and on vertical runs thru floor or ceiling.
i 6.1.3.12 Cable trays and bus ducts shall be. permanently identified with unique raceway numbers by approved labels at each end and on each side of each wall or floor they penetrate.- Labels should be positioned to be visible from the floor, if possible.
6.1.3.13 Cable tray covers shall be firmly secured to trays and fittings by means of readily removable screws,
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clamps, or suitable banding or straps at the following locations:
A.
Top tray in a stack in areas below floor gratings and in open areas subject to falling debris.
B. Vertical trays from floor penetrations to 8'0" minimum above the floor in areas accessible to personnel.
6.1.3.14 Maximum percentage fill of trays and ducts shall be less than 40% of the interior cross sectional area of the raceway unless otherwise noted.
6.1.3.15 Openings for cables entering control equipment, switchgear... load cancers and/or motor control centers from cable tray systems located above or below the equipment, shall be effectively sealed against dust, water and debris with silicon foam.
NOTE:
Paragraphs 6.1.3.13, 6.1.3.14 and 6.1.3.15 above are not required to release raceways for cable installation but shall be tracked as an open item on the CIDR and Turnover Exception Sheet until verified as acceptable by the QCE.
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EII No. EC-2 Rav. 5 Page 5 of 12 1
~(;_ 6.1.4 RIGID CONDUIT (EXPOSED) 4 (Exhibit #2 of EII G-4) ,
6.1.4.1 Rigid steel conduits shall be hot dipped galvanized l in accordance with ANSI C80.1 unless otherwise specified on the drawings.
6.1.4.2 Size of conduit shall be 3/4 inch diameter minimum to 4 inch diameter maximum unless otherwise noted.
6.1.4.3 Conduit runs shall have no more than the equivalent
' of 3-90* bends and shall not exceed 200 feet between pulling points, unless calculations are made to determine that the allowable cable stresses are not exceeded.
6.1.4.5 Conduit shall be cut square, threaded and reamed.
Burrs and sharp edges shall be removed.
6.1.4.6 Cutting oil or other approved coolant shall be used during fabrication of field thread.
6.1.4.7 Each threaded joint shall be thoroughly cleaned to remove all chips, dirt, cutting oil or other foreign matter. Zine rich paint shall be then applied.
6.1.4.8 Conduit bends shall be made cold with an approved
,f-) type of conduit bending machine so that the conduit
(_j internal diameter is not physically changed, the protective coating on the inside and outside is not injured and'the bend is free of kinks, indentations and flattened surfaces.
6.1.4.9 Large radius bends shall be used in conduit runs when the bending rcdius of the cable to.be contained in the conduits exceeds the radius of standard bends, to ease pulling tensions and to prevent cable damage.
~
In no case shall the bending radius be less than specified in Table 346-10 of the latest revision of NEC.
6.1.4.10 Exposed conduit runs shall be installed in a neat and warh=1 N manner, with 411. runs ganara11y parallel or at right angles to walls, structural members and ceilings.
6.1.4.11- Changes in direction of conduit shall be made with adequate radius bends. Where two or more conduits are grouped in the same place, all bends shall be uniform and fittings and boxes shall be installed so as to present an orderly appearance. Conduit shall be installed in such a manner as to ensure against p) trouble from trapped condensation when possible.
q-9 9
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J EII No. EC-2 Rev. 5 Page 6 of 12 6.1.4.12 Where exposed conduit elevation are shown on DWG's the installation tolerance shall be 1 2". -
Embedded conduit dimensioned where it enters or leaves concrete, the tolerance shall be i one conduit diameter.
6.1. 4 .1'3 Class II conduit shall be held in place with maleable iron one-holed pipe straps, conduit clamps, "U" bolts and closed bracket type pipe supports and trapeze.
Supports shall use insert plates or embed unistrut where available. Where embed steel is not available, .
support shall be in accordance with SMUD Construction Methods and Procedures. Maleable iron, conduit back spacers shall be used to hold conduit away from supporting surfaces.
6.1.4.14 When conduit penetrates a concrete or masonary wall or slab, the area between the outside of the conduit and the cored hole will be sealed the full length of the penetration with a pre-mixed, non-shrink grout, a District approved epoxy grout, or a sand cement mixture capable of providing the same fire rating protection as the wall. This grout material is not considered to be of any structural value, therefore, testing is not required.
f'T 6.1.4.15 Conduits shall be continuous from outlet to outlet D and from outlets to pull or junction boxes and shall be securely fastened at all connections in such a manner that each system shall be electrically continuous throughout.
6.1.4.16 Grounding type' bushings with insulated throats shall be used at termination of all steel conduit.
6.1.4.17 Expansion joints or liquid tight, flexible metal conduit may be used for exposed or concealed conduits crossing a structural expansion joint, seismic joint, or where settlement may occur.
6.1.4.18 "Sealtight" or liquid tight flexible conduit shall be used for all motor terminal bones and other equipment which is subject to vibration, movement, misalignment or as shown on the drawings. The length shall not exceed 6' - 0" with enough bend radius to ease cable pulling.
6.1.4.19 Erickson couplings or unions shall be used in exposed locations. When required to be embedded, the couplings
, shall be covered with two layers of Scotch 33 Tape half-lapped.
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Ell No. EC-2 Rev. 5 page 7 of 12 6.1.4.20 in conduit runs carrying size No. 8 AVG or larger C(,,), power cables, pull boxes shall be used in lieu of conduit fittings.
6.1.4.21 Approved explosion proof fittings and rigid conduit shall be used in hazardous areas as designated on the drawings.
6.1.4.22 Entry to freestanding Class IE equipment should be made with liquid tight flexible conduit and fittings in accordance with the following requirements:
Conduit Size Min length Max. Unsupported Length 3/4" 12" 5 Ft.
1" 12" 5 Ft.
1 1/2" 18" 5 Ft.
2" 18" 5 Ft.
3" 24" 5 Ft.
4" 24" 5 Ft. -
Exception: Rigid steel conduit may be used if the Class IE equipment has been qualified using rigid steel conduit, and the conduit, is installed in exactly the same way it was installed in qualifying the equipment. When used in conjunction with rigid C(,e x._,! steel conduit, the maximum unsupported length of rigid conduit and 5 feet of flexible conduit must not exceed the following:
Conduit Stze Maximum Unsupported Length 3/4" 7'-6" 1" 7'-6" 1 1/2" 7'-6" 2" 7'-10" 3" 8'-6" 4" 8'-6" 6.1.4.23 s Entrance of conduit to equipment, panels and j{ Junction boxes in wet areas shall be through 4
water tight treated hubs or approved equal.
6.1.4.24 Installation'where conduit enters electrical l equipment enclosures from top should be designed I to prevent water from entering the equipment. If I condensation can enter in the enclosure from inside the conduit, a drain fitting should be installed in the enclosure.
6.1.4.25 When conduits are required to be Installed close r3 to heat generating devices, the matter is to be
(' ) brought to the attention of the cognizant engineer for his disposition. '
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. - = -. .
EII No. EC-2 Rev. 5 Page 8 of 12 6.1.4.26 Conduits carrying Class I instrumentation cables installed to and above power cable trays shall be .
wrapped with insulation thermobestos for protection (Ref. Drawing E-734).
6.1.4.27 Barriers shall be installed between redundant conduit crossing redundant tray of different channel.
6.1.4.28, App. roved conduit markers shall be affixed to conduit at beginning end of run. Also where conduit passes through walls or floors', markers will be attached to
, conduit on each sid'e of obstruction. Markers should be visible from the floor.
6.1.4.29 ' \
g (This paragraph is not used with exposed condult.).
S SEE Ell EC-7 '
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6.1.4.30 When the design drawings require conduit to be
" abandoned in place", conduit will be cut back to the closest threaded fitting for rigid conduit and to the closest support for EMT - end caps to be installed.
6.1.4.31 All conduits terminating in panels' at the Control Room
' will be sealed with foam in accordance with details shown on Drawing E-630.
6.1.4.32 Conduits in areas that must be sealed because of ventilation leakage shall be sealed by packing Kaowool and Flamastic or approved equal as shown on the E-630 series drawings. The following areas typically require sealed conduits:
A. Conduit stubbing into the switchyard trenches from equipment as indicated on drawing.
B. Underground conduit entering switchgear, MCC
, equipment and manhole.
C. Underground conduit terminating in exposed or
- outdoor equipment and junction boxes.
D. Conduits terminating at trays from the hori:ontal
,or bottom fed vertical configuration or which terminate in equipment, devices or junction boxes l in the following areas:
- 1. Turbine Building
- 2. Auxiliary Building below Grade ,
- 3. Reactor Building
. 4. S.witchyard 6
ElI No. EC-2 Rev 5 page 9 of 12 i
NOTE: Paragraphs 6.1.4.31 and 6.1.4.32 are not required to release conduit for cable installation but shall be tracked as an open item on the CIDR and Turnover -
Exception Sheet until verified as acceptable by the QCE.
6.1.5 ELECTRICAL METALIC TUBING (EMT) 6.1.5.1 Electrical Metalic Tubing (EMT) shall be electro-galvapized in accordance with ANSI Standard No.
C80.4 6.1.5.2 EMT fittings shall be rain tight, compression type with Cadmium finish and installed in such a manner as to ensure electrical continuity throughout the system. End fittings for boxes, panels, etc., shall have insulated throats. .
6.1.5.3 All EMT conduits shall be held securely in place by means of approved support within 3' - 0" maximum of 1
connectors and couplings.
6.l.6 SUPPORTS 6.1.6.1 - Conduit supports designed as siesmic for Cle;s 12 d
conduits shall be installed and erected as shown on the C906 and C1031 series drawings.
i' 6.1.6.2 Cable tray supports designed as seismic for Class IE cable trays shall be installed and erected as shown on the C800 series drawings.
6.1.6.3 Raceway supports for Non Class IE raceway systems shall be the responsibility of the CE to design and i
locate. The maximum distance between supports shall be as required by the NEC. Condult which runs over or in the vicinity of QA Class 1 equipment or raceway shall be Installed per SMUD Construction Methods and Procedures criteria for Routing Category 11 Rigid Conduit and EMT for ll/l Consideration.
6.1.6.4 Drilling, punching or flame cutting of structural
, steel members is prohibited unless shown on structural support drawings. Flanges of miscellaneous steel I members may be drilled for conduit support bolts,
,provided that holes are located on gage lines. Orilled holes shall be painted with zine rich paint immediately after drilling. ;
6.1.6.5 Support shall be done in accordance with welding Procedure Specification M113 series and AWS 01.1 79.
6.1.6.6 Welding inspector shall verify that the welder place !
( his symbol adjacent to any weld he performs. For
'Jnistrut he is to use a felt marker or a paint marker, l
For plate or structural shapes he is to use a metal I
stamp, t I
Ell No. EC-2 Rev 5 Page 10 of 12
- 6. f. 6. 7 A welding QCE shall inspect the completed weld using
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the acceptance criteria listed in AWS D1.1.79 6.1.6.8 Subsequent to his inspection and acceptance of completed weld a qualified welding QCE will place his assigned symbol number or initials adjacent to all acceptable welds. He shall use a " Purple" felt rharker or paint stick for galvanized unistrut and carbon steel.
6.1.6.9 Acceptance of completed support welds shall be h documented on the applicable Electrical C10R's by affixing the stamp shown below, and completing the information required by the stamp.
Alt weias meet tne recurrements of A. W. !'
s %sualln50ectica has been perfo'med by QCl ondspecificatten M 113 QCE Data
( 6.1.6.10 When work is completed, the welding QCE shall complete the requirements shown on the work requests using the same stamp as in 6.1.6.9 above.
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- EII No. EC-2 Rev. 5 Page 11 of 12
, ' 6.1.7.2 Cabinets, boxes and panelboards shall be in accordance with UL referenced standards and NEMA class as designatc on the drawings.
, 6.1.7.3 Boxes and wireways shall be sized in accordance with the requirements of the National Electrical Code, unless otherwise indicated on the engineering drawings (Article 370.18 and Table 370.6). The size of pull boxe i sha).1 b.e large enough to accommodate all bends occurring:
when pulling cable or wires through box (300.34 NEC).
Field Engineering may increase the box sizes shown on ph:
drawings to a larger standard size. DCN's must be '
prepared and approved prior to installation.
6.1.7.4 Boxes shall be securely and rigidly fastened to the surfcce upon which they are mounted.
Outlac boxes for various equipment shall be mounted so that the outlet centerline is at the following height:
Equipment Mounting Height Switch outlet and switches 4'6" l Receptacles outlets in offices l'0" Other receptacles outlets 3'6" Clock outlets 7'0" Water cooler outlets l'6" ,
Seismic supports are required for those boxes which are part of Class IE raceway system or other classes insta11c; over Class 1 equipment. For support details see applicable drawings.
6.1.7.5 In completed installation all outlet boxes, pull boxes '
and junction boxes shall be provided with covers approved for that purpose. Unused openings in boxes, panels or cabinets shall be effectively closed. Spare holes and cut-outs in boxes shall be sealed in the following manner NEMA 1 TYPE - General Purpose, Indoor a) All round holes to be sealed with type KO seals
, (snap-in) or equal.
b) All oblong cut-outs to be sealed with a place (min. thickness same as box), completely covering the cut-out and secured by roundhead bolts with heads facing the interior of the box.
NEMA 3 TYPE - Weatherproof, Outdoor / Moist Locations a) All holes and cut-outs to be scaled with an inner and outer disk or plate (min. thickness same as box),-
using neoprene gasket and clamped with a centered bolt k
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EII No. EC-2 Rev. 5 ,
l Page 12 of 12 i 6.1.7.6 Junction boxes will be identified with a permanently installed and approved label per applicable drawings. -
6.2 DOCin!ENTATION 6.2.1 The Discipline QCE shall document inspection of raceway systems by the following method and forms:
6.2.1.1 Complete the Control Drawings per EII C-2, Attachment #1 and 2.
1 6.2.1.2 l
Complete the raceway cards and equipment cards per EII G-2 and G-6.
6.2.1.3 Deviations from the drawings, installation cards, codes.
standards or this procedure are nonconforming and the affected item (s) shall be reported on a Memo or NCR per EII G-2. ,
t 6.2.1.4 Complete the CIDR per EII G-4.
.6.2.2 Supplemental inspection data report for conduits p and trays Installation slanature definitions. ,
6.2.2.1 I tem 1 card information verified. This item means that the Informations on the card matches the E1008, and conduit coco.
6.2.2.2 Item 2 condult/ tray properly assebmled. That Item means that Installation of tray is in accordance ;
with Paragraph 6.1.3 of this procedure, and with paragraph 6.1.4 for condult.
6.2.2.3 Bends acceptable. This Item means that bends on conduit are in accordance with Paragraph 6. l 4.3,
, 6.1.4.8, 6.1.4.9 and 10.
6.2.2.4 Item 3 for conduit and item 4 for cable tray conduit /
tray Properly supported that item means that conduit supports are in accordance with Paragraph 6.1.3.8 and/
or 6.l'6 of this proceduro.
6.2.2.5 iteln 4 for cable tray, Item 5 for condult, condult/ t l
tray. Properly Iduntifled this item means that cable
- tray is in accordance with Paragraph 6.1.3.12 and 6.1.4.28 for condult.
6.2.2.6 Item 6 Installation conform to drawings. This means that raceway has been Installed by E-700 Drawings.
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EC;; SMUD RANCHO SECO Attachment to CIDR SITE QUALITY CONTROL PLAN
, Page of EQUIPMENT / COMPONENT / MATERIAL CONDUIT INSTALLATION PROCESS ACTIVITY AS NOTED Typillhlistofitemsinspected, Date of QCE surv'yed
. or reviewed Activity Inspection Sign / Initial Remarks:
1 RICID CONDUIT No more than 270' between pull coint Visual Rouch ednes removed Visual zine rich paint applied on field threads Visual Wrench mark touched up with zine rich paint Visual Groundinn continuity between conduit Visual Double lock not or hub
- ina1211ed Visual
__Elistic bushing installed Visual
.m L EMY"CO.NDUIT Sharp edges removed Visual 8
No more than 270 between ou11 point Visual Crounding continuity, continuous Visual l PULL /JURCTION BOX Securely supported sized &
tvoe per E-1008 Visual
,_ _Idtatified por E-1008 Visual
_ Rental knockouts Visual
.. _Lluchun paint Visual (m
l Exhibit 25 ,
EC* SMUD RANCHO SECO Attachment to CIDR
,- .- SITE QUALITY CONTROL PLAN Page of EQUIPMENT / COMP 0NENT/ MATERIAL ELECTRICAL DUCT BANK INSTALLATION PROCESS ACTIVITY AS NOTED llheallistofitemsinspected, Date of surv;yed or reviewed QCE Activity Inspection Sign / Initial Remarks:
O_1_ PVC CONDUIT Conduit is correct size and tvoe Verify Duct installed providing 3' cer 100' drainane slope into manhole & handhole or otherwise noted in drawing Verify Stacked conduit runs shall have stannered icints except at sweeos & transitions Verify g_ duct ioints shall be wateroroof to manufacturer's recernendations Verify End bells or rigid steel conduit with bushinns are used as required by details on layout drawinns Verify
__ No metal tie wire or rebar comes between conduit Verify p2 RfCID CONDUIT
_ Free of kinks & flattened
_ . . .surLice Vinual
.k h are than 270' betwocn outt point Visual -
, . ,.x t r
- Rnuch edces r_sgoved Visual -'
W 8w '"' ** WM*
f 1 JC: . SED RA.NCl!0 SECO Attachment to CIDR
, ." SITE QUALITY CONTROL PL1:; Pa;;e of EQUIPMENT / COMPONENT / MATERIAL rLECTRICAL DUCT BANK INSTALL \ TION PROCESS ACTIVITY AS NOTED
.t,,callistofitemsinspected, Date of surv:yed or reviewed QCE Activity Inspection SI:;n/ Initial Remarks:
LL RICID CONDUIT Zine rich paint applied on field threads Visual tirench mark touched up with
__ 2 ine r ich paint Visual
__ _Couclings securely tightened Visual Erickson couplinns are taped
._..ani coated to be water tight Visual
__Icats performed by draw
. hcugheachconduit. a mnarel of nooropriate ni::e an noproved by tho encineer/innocctor tJITNESS h
m e
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