ML19220B615
| ML19220B615 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/21/1975 |
| From: | Arnold R Metropolitan Edison Co |
| To: | O'Reilly J NRC Office of Inspection & Enforcement (IE Region I) |
| Shared Package | |
| ML19220B599 | List: |
| References | |
| GQL-1407, NUDOCS 7904270109 | |
| Download: ML19220B615 (4) | |
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T OFFICE DOX 542 RE ACING, PENNsYLVANI A 19c02 TELEPHONE 215 - 3:3 :501 m
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GQL ILC7 Mr. J.
P. O'Reilly, Director Office of Inspection and Enforce = cat Region I United States Nuclear Regulatory Cc::ission 631 Park Avenuc King of Prussia, Pennsylvania 19406
Dear Mr. O'Reilly:
subject:
License N,.
CPPR-66 Inspection No. 75-08 Docket No. 50-320 This ic:ter is in :aspense t: the subject inspection repc : resulting frc Mr. A. Varela's inspectica en June 16-17, 25-26, 1975, and the findin;;s thereof.
Following is a listing of the deviations and responses to these deviations:
Deviation A Contrary Oc the c = 1:= cat in FSAR See:1cn 3.8.1.6.5 and Project Specifica:ica 2555-30 to construe:icu cf the Reac::: Euildinz in accordance vi:h ACI Standarc 3C1, cube strength testing to =casure the seven day ccepressive s:rength of the grou: used for the post tensioned tendcas was not perfor=ed.
Response A Specifica:ica 2555-30, paragraph 4.5, sta:es that "all groutin; operations shall c:nfor= :o the requiremen:s and rec==endations of PCI Recon ended Pras: ice for Greutir; cf ? st-Tensiened Pre-stressed Cencrete and ACI 301 excep: as = edified herein".
Para -
graph 4.0 recuires :ha: the cen::sc:or devel p a :endon ins:alla-tion and grou:ing procedure and submi: this precedure : the Engin-eer for appr val.
Since this approved :.nstallation preceduri: is a direct bypr:cuct of the specificati:n 1 is censidered :: be an extensica :o :ha: Opecifica:10n. Any ::difica:icn to either cf the docu=en:s not'ed abcve are appreved cnd accepted by :he engineer.
The a:::crel ins:allctice recedure : uiref : c:=presrice strenrih tes to be ac::npiiched c: 2d day: en :he gr:u- : rial
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=ation caly. Thia was d:ne and the results are c:: ached.
7904270.109
?. J. F. O' Reill; tesconce A (Cent'd' is not It shculd be noted tha: the cc:gressive strength of the greut a factor in the design and analysis of the tenden ins:cllction 1:.
Three Mile Island Unit 2.
Deviation ?
in FSAR Appendix C, Section 2C.1.4 to cen-Contrary to :he ec =1:: cat in accordence with the AS::I struction of the pos: tensiened sys c:
BLPV Code, See:1cn III, Divisica 2, tests to sensure the chloride and nitrate concentrctions of the grou: used for the pos: tensioned tendens were not perfor ed.
Resoonse 3 Referenec to the ASMI 31PV~ Cede,Section III, Divisica 2, was orig:-
nally intended to apply only to perfernance require:ents of the code rather than := cceplete and literal cc pliance with all aspects of This s:a:e ent vill be a= ended to be. = ore exclusive and the code.
definitive as fc110ws:
tensiening "The Stresstecl high efficiency S/H 54-5 EE post anchorage sys:c= cc plies with the performance require =ents established in sub-subarticles CC 2450 and CC 2460 of ' Stand-ard Code for Concrete Reactor Vessels and Centainnents (Section III, Division 2 of the ASMI Sciler and Pressure Ccde)'".
A=end:eut 32 to the ISAR due in Septc=ber 1975 vill incorpora:e this revised wording.
Sections of this cede other than these ref erenced above vill not be applicable.
Deviatien C Contrary to an accepted industry cede, ACI Cc==ittee 349, " Criteria Structures," a for Reinforced Concrete Nuclear Pcver Contain=en:
and test to =easure the alkalinity of spe:ial =a:erial recuire en:
tensiened tendon ducts was the vet grout =1x used to fill the post not perfor=ed.
Reseense C ACI Cc==ittee 349, Ti:le No. 69-2, " Criteria fer Reinforced Cencrete Nuclear Pcwcr Contain=en: Struccures" was not invoked or referenced in the design for Three Mile Island Uri: 2.
It should be noted that
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itecponse C (C e n t ' d 'i Portland cceen: 3rcut has historie:11y provided a high alkaline enviren=ent cc p :ible vi:h corrosion protection require =ents for Prestressin; steel.
Test perfor:ed by Sika Chc ical Ccrcoratien show that the p:4 of the wet mixed greut is approxt:ately'12,3, no coder currently in effect require p:4 =easurc ents of Portland ce=ent grout.
Very truly yours, I
/
R. C. AYhold Vice President irh 41e:
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