IA-87-759, Annotated Slides of NRC 870909 Briefing on Pipe Replacement Project
| ML20236X006 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/09/1987 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20236X002 | List: |
| References | |
| FOIA-87-759 NUDOCS 8712080365 | |
| Download: ML20236X006 (37) | |
Text
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?3A?S Uf' 3 ?:?3 E3: ACE: M ' ?30J3CT TODAY'S MEETING PURPOSB TO PROVIDE INFORMATION TO THE NRC STAFF CONCERNING TECHNICAL ISSUES ADDRESSED DURING THE PIPE REPLACEMENT PROJECT AT PEACH BOTTOM- ATOMIC POWER STATION UNIT 3 s
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'BA?S UNL" 3 ?IPE REPUCPMEN" PRO." CT .
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AGEhTA TOP!C PRESENT0R PROJECT 0'ERVEN TONY BAZZAN!
DECONTAMINATION.
MARK MILLER ENGINEERING FRAT!K COOK L
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ADDRESS EVOLVING REGULATORY POSITIONS
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-*- DECONTA!.!!NAT!0N REAGENT QUALIFICATION
- e. DECOMTAM: NATION REAGENT SELECTION
- liATER!ALS REV.EW
- DECONTAM! NATION FLOW PATH SELECTION
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J. A. J0NES APPLIED RESEARCH COMPANY DECONTAMINATION VENDOR:
PACIFIC NUCLEAR SERVICES, INC.
CONSULTANT:
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- "A" LOOP SUCT!0M 4" BL!!!D FLA':GE
- 1" PLUG-SAMPLE FRO:.! REC:RCUI'!O': P:P!NG e- REAGENTS ,
- - LOMI-NP-LO!f! @ 90*C
- LOMI-AP-LO!A @ 90*C
- CANDECON-AP-CANDECON @ 90*C
- CANDEC0!! @ 120*C
- PNS C!TROX-AP-CITROX @ 90*C 1
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PBAPS U' NIT 3 PIPE . REPLACEMENT PROJECT-DECONTAMINATION REAGENT QUAUFICATION t
- RESULTS '
HIGH CHROMlUM/ ZINC 0XIDE INDICATED THE NEED FOR
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PRE-0XIDATION STEP
-i ALL REAGENTS REMOVED AT LEAST 75% OF ACTMTY ON SAMPLES EXTREMELY LOW AND ACCEPTABLE CORROSION ON ALL OF; -
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l SHORTEST APPL! CATION TIME-(ABOUT HALF THAT 07 OTHER COMMERClA!.LY AVAILAB.'.E SOLVE!C
- EXTENS!VE SUCCESSFUL PLANT EXPERENCE-
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PBAPS; UNIT 3 PIPE' REPLACEMENT PROJECT GE COMPONENT MATER!AL REVIEW 0F LOMI-NP-LOMI
- Ai1 WETTED SURFACES REV!EWED:'
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- RWCU HEAT EXCHANGERS l
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- NO DELETERIOUS EFFECTS RESULTING FROM L
EXPOSURE TO LOMi-MP-LOMI ARE EXPECTED j l
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IEFFECTSf 0F LOMI-NP-LOMI LONl VESSEL INTE
'* LOMI, EVEN WITHOUT. DILUTION, DEMONSTRATED NOT-TO HAVE DELETERIOUS EFFECTS ON- ANY. VESSEL-INTERNAL l MATERIAL-
- NP, EVEN WITHOUT DILUTION, DEMONSTRATED NOT 1T0;HAVE DELETERIOUS EFFECTS-ON ANY VESSEL INTERNAL MATERIAL EXCEPT SA-508 LOW ALLOY STEEL (VESSEL N0ZZLES)
INSUFFICIENT TEST DATA'TO CONCLUDE EFFECTS - ON . SA-508 e
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SUCTION PlPING WHERE CONTACT WlTH l SA-508 POSSIBLE 1
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P PBAPS UNIT 13 PIPE REPLACEMENT PROJECT i
DECONTAMINATION
SUMMARY
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- - EXPERIENCED ORGANIZATION i
- PLAN TO USE LOMI-NP-LOMI WITH SPRAY WANDS
- *~ CONSERVATIVE APPLICATION METHOD NO DELETERIOUS EFFECTS ON WETTED ' SURFACES / M
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- NP NOT TO BE PERFORMED ON' SUCTION PIPING
- EXPECT AN AVERAGE OVERALL SYSTEM CONTACT DF 0F 7.0 WHICH WILL SAVE SIGNIFICANT MAN-REM
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BG NEalhG SCOPE:0F REPLACEMJT DESIGN IMPROVEMENTS CODES AND STANDARDS NON-DESTRUCTIVE EXAM!NAT!0N
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PRESERV!CE TESTING 10 CFR 50.59 EVALUATION TECHN! CAL SPECIFICATION CHANGES RESTORATION lij-VESSEL IN-SERVICE INSPECTION
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- RHR SUPPLY AND RETURN PlPING' INCLUDING PENETRATIONS
- . RWCU PENETRATION AND PlPING TO REGEN HX
- RPV DRAIN REROUTE AND SHIELDING
- N-1, N-2, N-5, AND N-8 SAFE ENDS l
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J CROSS tie VALVES
- A!B PIPE WHIP RESTRAINTS l.
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- REMOVE / CLAD ALLOY 182 BUTTER ]1
- USE OF BENT PlPE ELIMINATES 42 WELDS
- IMPROVED CONTROL OF WELD HEAT INPUT l l
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- ELECTROPOLISHING AND PRE 0XlDATION 1
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- REPLACEMENT OF WELDED ATTACHMENTS
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- RPV DRAIN REDESIGNED TO REDUCE RADIATION LEVELS I
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. ASME SECTION lli SUBSECTION NB RPV DRAIN AND RWCU PlPlNG OUTSIDE CONTAINMENT DESIGNED TO ANSI B31.1
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FABRICATED AND INSTALLED TO ASME SECTION 111. NB AND ND RESPECTIVELY
- . PIPE SUPPORTS
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. REUSED - ANSI B31.1 e' -CONTAINMENT PENETRATIONS ASME SECTION lll SUBSECTION NB & NE n.-.--n_. _---- .-__ - - - _ . - .
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N0;\-JES RUC VE .EXAMA"ON
- ASME XI PSI PER 80 EDITION W81 ADDENDA AS DEFINED BY PBAPS SECOND INTERVAL ISI PROGRAM USING IGSCC ACCEPTED TECHNIQUES AND EPRI QUALIFIED INSPECTORS ALLOY 182/82 BUTTER UT UTILlZING REFRACTED L-WAV I
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L PBAPS UNIT 3 PIPE-REPLACEMENT PROJECT PRESERV!CE TESTING i
- RPV DRAIN, RECIRC, RHR AND RWCU INSIDE DRYWELL-OUTLTO THE OUTER C.I. VALVES WILL BE HYDR 0 TESTED WITH THE.
REACTOR VESSEL PER. ASME XI .
o R'NCU OUTSIDE DRYWELL HYDR 0 TESTED SEPARATELY PE CONTA:NMENT ILRT TO TEST NEW PENETRATIONS
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10 CFR 50.59 O!ALUAT!0N ARBliRARY INTERMEDIATE BREAX (A!B) DELEil0N NRC GENER!C LETTER DAED 6/19/87 ALLOWED EUM!NAT 0F AIB RULES FOR OPERAT!NG PLANTS 1
RHR AND CORE SPRAY STRAlNERS NRC GENER!CALLY APPROVED !"SULA!!0N RG 1.82 TRANSPORT ANALYS:S LARGER STRAINER FLOW AREA FLOW SPLrITERS PURPOSE WAS TO REDUCE PUM? !NLET SWIRL GE AND BYRON JACKSON PERFORMED TESTS A.ND ANALYS!
WH CH VERIF!D ACCEPTABL7Y OF DELET!0N UNTT 2 OPERAT!0N CONFIRMS ANALYSIS
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PBAPS UNIT.3 PIPE REPLACEMENT PROJECT 1 4
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10LCFR 50.59 EVALUATION (CONTD.' .
1 BI-STABLE' FLOW - .
-(IEB'86-110) - EXACT CAUSE UNKNOWN BUT SEEMS TO B CAUSED BY HIGH AP IN HEADER TEES COMPARED T0.
.* GE HA3 REVlBED PBAPS AND CONCLUDED PBAPS AP RATIO IS SMALL AND IS ACCEPTABLE-
- UTTLE DIFFERENCE FROM UN!T 2-FINAL VERIFICATION DURING PRE-0P TESTING y
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= HYDRAUUC ANALYS!S Ti T l GE ANALYZED AND CONCLUDED THE CHANGES FROM UNIT 2- ARE VERY SMALL AND THERE WILL BE NEGUGIBLE FLOW DISTRIBUTION CHANGES
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J0. CFR 50.59 Ei'Al UATION. (CONTD. . .) 1 i
HEAD SPRAY i
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' LORIGlNAL PURPOSE IS ONLY:TO REDUCE HEAD
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- - N0:!MPACT ON HEAD VENT li ,
- DELEED BY. OTHER PLANTS CROSS TlE
- NO CREDIT TAKEN FOR ECCS OPERATION
- EQUAL FLOW DISTR!BUT!0N FROM ONE LOOP UNNECESSARY l
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- ' TABLE 3.7.1
- DELETE HEAD. SPRAY ISOLATION VALVES
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PBAPS UNIT 3 PIPE REPLACEMENT PROJECT-RESTORATION
- MAIN ATTEMPT IS TO REINSTALL IN ORIGINAL CONFIGURATION
- CHANGES WILL BE EVALUATED ON CASE BY CASE BASIS
- ' ALL MODS WILL BE PERFORMED IN ACCORDANCE WITH ASME XI 1:
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ENGINEERING
SUMMARY
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1 MATERIAL; UPGRADE FOR RECIRC, RHR, RWCU, & RPV DRAIN!
SAFE END. REPLACEMENT & BUTTER INSPECTION 7
ASME Ill 80 EDITION WINTER 81 ADDENDA
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. DESIGN IMPROVEMENTS
- EXPERIENCED PERSONNEL UTILIZATION OF LATEST TECHNOLOGY AND INDUSTRY EXPERIENCE l>
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IN-VESSEL INSPECTIONS (CONTD. . .)
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. DAMAGE REPAIR N/A- -. REPAIR
. VlBRATION RESONANCE TEST - CLAMPS'AS REQUIRED SHROUD HEAD BOLTS N/A - REPLACE JET PUMP HOLD DOWN N/A - REPLACE-L "Il BEAMS DRY TUBES VISUAL - REPLACE AS REQUIRED STEAM DRYER VISUAL - REPAlR AS REQUIRED CONTROL BLADES VISUAL - BUFFER MAINTENANCE
- MODIFIED BLADES
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