ML19242B006
| ML19242B006 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/09/1979 |
| From: | Dunn C DUQUESNE LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7908070303 | |
| Download: ML19242B006 (78) | |
Text
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<4i2) 4se-ecoo Pittsburgh, Pennsylvania 15219 July 6,1979 United States Nuclear Regulatory Commission Attention: Boyce H. Grier, Director Region I 631 Park Avenue King of Prussia, Pennsylvania 19406
Reference:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334 License No. DPR-66 Response to IE Bulletin 79-02
Dear Mr. Grier:
Actached is our response to the subject Bulletin. Please note that the entire inspection program will not be complete before the anticipated plant start-up, however, since there has been a significant sampling with the acceptable results shown in the attached report, we consider it safe to start-up the plant. We believe that the inspection program will continue to have a high success rate. Additional information will be forwarded to you upon completion of the inspection program.
If you have any questions regarding this response, please contact my office.
Very truly yours, C. N. Dunn Vice President, Operations Attachment cc: United States Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Operations 527 "o Washington, D. C. 20555 'd 7908070 'j@ f
DUQUESNE LIGHT COMPANY ENGINEERING AND CONSTRUCTION DIVISION STRUCTURAL ENGINEERING DEPARTMENT J.0. 12690.88 The following report of the Duquesne Light Company's program to address IE Bulletin 79-02 as it applies to the Beaver Valley Power Station Unit 1 (BV1) is presented in three parts.
Part 1 describes the analytical and inspection criteria developed and implemented to address the specific paragraphs of the bulletin. Part II delineates the criteria established to conduct personnel training, equipment calibration and field inspections. Part III of the report addresses the schedule and the status of the work performed to date.
Duquesne Light Company has a program underway to identify, inspect, analyze and perform, as required, modifications on pipe support baseplates that use concrete expansion anchor bolts in Seismic Category I systems as defined by Regulatory Guide 1.29 " Seismic Design Classification", Revision I, dated August, 1973 Small diameter lines, 2 1/2 inches diameter and smaller, which were '
analyzed using conservative id calculated methods in lieu of a computer analysis are not included in this effort.
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'Page 2 of 9 PART I -
ANALYTICAL AND INSPECTION CRITERIA Attachment A to this report identifies those large diameter Seismic Category I piping lines, pipe supports and base plates which must be analyzed and inspected to I/E 79-02 criteria.
This atte.chment further identifies piping lines which are safe shutdown systems and inaccessible during operations.
The piping syste=s are divided into piping lines which lie between penetrations, anchors, motor operator valves, manifolds and piping size changes. Based on a prelicinary review of the applicable drawings and field purchases for BV-1 it has been determined that most of the concrete expansion anchors used for the BV-1 pipe supports are the self-drilling shell type or the externally threaded wedge type. The anchor inspection programs shown in Attachment B specifically address these types of anchors. The procedures will be modified to inclLJe inspection plans for other type anchors if they are encountered.
This program addresses the following items as a plan of action for compliance with IE Bulletin 79-02. The item numbers listed below are referenced to similarly numbered items in IE Bulletin 79-02.
ITEM 1 Verify that oipe support flexibility was accounted .or in the calculation of anchor Dolt loads.
A procedure has been developed which can be applied to common plate configurations to verify that plate flexibility has been accounted for in determining the loads induced in the drilled-in anchor bolts.
This procedure includes load factors to be applied to anchor bolt loads to provide for the effects of plate flexibility. The load factors were developed using finite element analysis techniques. The finite element techniques are also used for individual plates which are not enveloped by the common plate configuration procedure.
The finite element model considers plate flexibility, anchor stiffness, stiffening effect of member attached to the plate, as well as concrete flexibility. The contact boundary conditions at the interface of the plate and concrete and plate and drilled-in anchors are satisfied in the solution.
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Page 3 of 9 Prior to applying the model, sensitivity studies were conducted on both finite element grid size and concrete stiffness. A grid size suitable for application and one which produces reliable results was selected. The concrete stiffness is represented in the model by linearly elastic springs (i.e., a Winkler foundation).
An analysis was performed which shows compressive stiffness to be much greater tlan the drilled-in anchor plate assembly. Varying spr;ng stiffness over three orders of magnitude resulted in negligible changes in the drilled-in anchor loads.
The ANSYS III finite element package is being used for analysis. Both the " rectangular plate", ; elastic capabilities only) and the " elastic flat triangle" elements are being used to model the base plate. These elements model pure plate bending, appropriate for the analysis of the flexible base plates. The concrete and drilled-in anchors are both modeled with the
" combination" gap elements which both model the stiffness of these components and represent the contact boundary condition discussed previously. The stiffening effect of the attached members are represented with " elastic 3-D beam" elements. The grid is constructed such that beam elements are adjacent to the edge of plate elements and both connected to common nodes. The displacement equation used in the formulation of both the beam and plate elements are the sa.'. assuring comnatibility of displacements at this intei 'a c e . Finally, forces are applied as couples and axial forces distributed to nodes at the intersection of the attached member and plate.
The above procedure accounts for the effects of shear-tension interaction.
The design adequacy of those bolts installed to less than the minimum edge distance requirements or minimum bolt spacing will be addressed on a case-by-case basis depending on the results of the field inspection program.
Engineering in parallel with field inspections has completed the flexibility analysis described above for 80 plates. This effort was undertaken to prove out procedures and train personnel recognizing that the results of the field inspections could void a co=pleted flexibility analysis. Attachment A identifes for information these systems and lines in which the base plate flexibility analysis was performed.
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Page 4 of 9 ITEM 2 Verify that concrete expansion anchor bolts have the following minimum factor of safety between bolt design load and bolt ultimate capacity:
- a. Four - for wedge and sleeve type anchor bolts
- b. Five - for shell type anchor bolts The maximum allowable bolt loads used for the base plate analysis referenced in Item 1 use a factor of safety of five (5) for shell type anchor bolts and four (4) for the wedge type anchor belts. The factor of safety is based on the anchor manufacturer's published average ultimate loads adjusted to the in-place concrete strength.
Determination of the in-place concrete strength will be based on the results of the 28-day compressive strength tests taken during construction of BV-1 and an in-place concrete strength determination as required.
The concrete for BV-1 was designed to attain 3000 psi compressive strength in 28 days. The average 28-day compressive strength for all concrete placed in BV-1 exceeded 4000 psi, therefore this value is acceptable for use in determining the maximum allowable bolt loads.
The in-place concrete strength tests will be used to verify normal concrete strength gain beyond 28-days for those areas where 28-day compressive strengths were between 3000 psi and 4000 psi.
ITEM 3 Describe the design recuirements for cyclic loads.
The anchor bolts were designed to withstand the maximum forces applied by seismic loads along with other applicable loads. Properly installed drilled-in anchers are capable of withstanding these design loads for the cycles which would be expected from a seismic event.
ITEM 4 Verify from existing QC documentation that design requirements have been met f oi' each anchor bolt in that cyclic loads have been considered and the soecified design tyoe is correctly installed. If sufficient documentatio; does not exist, then in tiate a test orogram to assure that each Seismic Category I system will perform its intended function.
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Page 5 of 9 Duquesne Light Company has beg;n an anchor inspection program which is being conducted concurrently with an as-built base plate inspection program. The purpose of the anchor inspection program is to verify the size, type and adequacy of the anchor installation.
The efforts discussed in Items 1 and 2, namely, the development of bolt loads as a result of the flexible base place analysis and the development of the maximum allowable anchor design loads form the basis for anchor inspection program. The flexible base plate analysis will verify that the design loads do not exceed the maximum allowable anchor design load. The present procedures for the anchor inspection program require that each anchor in each base plate be inspected for size and embedment depth, inspected to determine the position of the shell relative to the back of the plate, torqued to at least the maximum allowable anchor design load, reinspected to verify that the anchor has remained in position, and retorqued to at least the maximum allow-able anchor design load.
A program is unde.way to correlate the torque applications described above to corresponding bolt tensions. The correlation tests are being conducted on a series of self-drilling shell anchors which were installed in a concrete wall on the BV-1 site for testing purposes. The base plate inspections conducted thus far indicate an extensive use of threaded studs and nuts in the self-drilling shell typeanchors. Torque-tension correlation tests for this application are presently underway and the results are being assembled. The remaining correlation tests for the bolt-in-anchor application and the test of the anchors to their ultimate capacity will be conducted subsequently.
The results of these tests will be submitted as a supplement to this report as they are completed and the results assembled.
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Page 6 of 9 PART II -
FIELD INSPECTION PROGRAM The investigation and testing of base plates and anchors installed at the Beaver Valley P'wer Station Unit No. 1 in accordance with the requirements and intent of the IE Bulletin 79-02 was implemented in a manner to minimize personnel exposure and maximize craft productivity. A controlled program was developed to prevent unnecessary rework and to insure complete document traceability.
This program is applicable to the inspection of pipe support base plates that use concrete expansion anchor bolts in seismic Category I systems.
Each of the lines listed in Attachment A were separated into line packages to facilitate field inspection. Each inspection package contains the drawings of record, reference information 2nd the required inspection documentation. Each hanger identified in these packages is then inspected to verify the as-built conditions of the base plate (Procedure 7902-01 in Attachment 3) and the adequacy of the concrete expansien anchor bolts (Procedure 790202 and 03 in Attachment B).
Attachment inspection.
C is a copy of a completed line package The initial testing and inspections (Phase I) were performed under controlled conditions to verify the procedure and obtain the maximum amount of data in the shortest time span. The inspections and tests were limited to an area which met the following criteria:
- 1. Low radiation area
- 2. Wall or ceiling base plate 3 No floor mounted or grouted base plate
- 4. Base plates and piping that could be moved to allow the installation of shim. Include temporary support when required.
- 5. Systems that could be shutdown or were already shutdown.
- 6. Base plates with 4 or 6 bolts.
- 7. No wedge type anchors This criteria was followed for the first 49 base plates which percent.
shows an overall acceptability of more than 95 527 094
Page 7 of 9 Based on the results of the Phase I shimming procedure and the resultant high confidence factor, the testing was modified (Phase II). The modified program deleted the requirement for shimming the plate away from the concrete. This Phase II program has the following criteria:
- 1. Low radiation area
- 2. Wall or ceiling base plates without grout 3 No floor counted supports which are grouted
- 4. Systems that do not need to be shutdown or were already shutdown The testing of floor mounted / grouted base plates was reviewed and a procedure developed which as yet requires field review and trouble shooting. The equipment needed for this testing program is presently being fabricated.
The following summary outlines how and when the above was implemented and accomplished.
6/4 to 6/11 The procedure was reviewed and revised based en questions and concerns obtained during meeting for the scheduling of work and personnel as well as the orientation of personnel. Training sessions (orientations) were held for the following personnel to assure the purpose and requirements Cr the performance of this work was unt;retood.
- 1. Contractor Schneider, Inc.,
Supervisors and Crafts
- 2. Duquesne Light Company, Supervisors Construction Department Nuclear 3 Beaver Valley Power Station Unit No.
1, Nuclear Site Quality Control
- 4. Stone & Webster Engineering Corporation, Site Engineers
- 5. Beaver Valley Power Station Unit No.
1, Operations Equipment and materials were assembled and calibrated as required by the controlled procedures.
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Page 8 of 9 Supporting personnel were scheduled and informed of the task to allow work to perform in minimum time span.
6/11 to 6/20 Phase I was implemented with 49 base plates having tests performed. During Phase I approximately 250 hangers were reviewed but were not tested due to Phase I criteria. Approximately 80 base plates had as-built, (i.e. visual comparison to support sketches) measurements performed.
6/20 to Phase II inspection plan was implemented Present and is presently in progress.
6/26 to A procedure for testing and verification Present of f1cor mounted and grouted base plates was developed and associated equipment is now being asse= bled or fabricated.
Attachments D and E detail the flow of data and sequence required to complete a field inspection.
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Page 9 of 9 PART III - SCIEDU! ? 4MD STATUS OF WORK PERFORMED TO DATE The results of the inspection are shown on Attachment F.
This is an on-going inspection and has not been completed. This Attachment will be periodically updated as the inspection progresses. The proposed schedule for completion of this effort is shown in Attachment E. This schedule is based on 40 days operation for BV-1 prior to Septebmer 1, 1979, during which time this effort would be discontinued. Our intention is to continue the anchor inspection program until BV-1 resumes operation and resume and cceplete the anchor inspection program after 40 days of operation for BV-1 Safe shutdown systems in inaccessible areas during operation Es indicated in Attachment A shall be inspected and analyzed first. Current procedures and inspection results are available at Bea /er Valley I for your use and information.
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,J.O.No. 12690.88
(
ATTACHMEh"P A CATEGORY I SYSTEM LISTING FOR PIPE SUPPORT BASEPLATE.S THAT USE CONCRETE EXPANSION ANCHOR BOLTS IN SEISMIC CATEGORY I SYSTEMS I
Beaver Valley Power Station - Unit No. 1 Duquesne Light Company Pittsburgh, Pennsylvania w- F 52/. OB c~
Stone & Webster Engineering Corporation Boston, Massachusetts .. .
J.O.No. 12690.88 A'I rACEMENT A June 1, 1979
, CATEGORY I SYSTEM LISTING (LARGE BORE PIPING ONLY) PAGE 1 OF 13 NR Uk'$ d trY o NO3 f$ dob w ul th Number of Base Rg$y aM m >k O # 1ru Line No. NU D3ou W do Wu$f 1QEugPlates to That 79-02Apply AJA - m EJECTOR DISCHARGE TO ATMOSPEERE I
AJA SYSTEM 4"-AJA - 2 v51-03 6"-AJA 151-Q3 8 6"-AJA -
17-151-Q3 l 4
BR - BORON RECOVERY I
'BR SYSTEM 3"-BR -
2-152-03 9 2 3"-BR 152-03 i
- I l 3"-BR -
26-152-03 # 1 1 3 3"-BR 152-Q3
- i 1 3"-CC - 186-151-Q3 2. 8 l 2, 2 3"-CC - 187-151-03
- i 4 3"-CC - 209-151-Q31
- I 3"-CC - 225-151-Q31
- 3 "-CC - 22 6-151-Q31 # ' -
4"-CC -
18 4 -151-Q31 l t i 4 "-CC - 203-151-Q36 I 8 I i 4"-CC - 219-151-Q31 i s I l 4"-CC - 2u6-151-Q31
- l l 1 4 "--CC -
2 4 7-151-Q31 4 1 5 4 "-CC - 250-151-Q31 e i 4 6"-CC - 17 8-151-Q31 1 8 / i 3 6"-CC - 262-151-Q31
- I 3 6 "-CC - 2 6 3- 15 3-Q31
- i 4
_3"-CC - 195-151-031 8 8 3"-CC - 210-151-Q3l t l 3"-CC - 232-151-Q31 # } 2 4 "-CC - 251-151-03 8 i 2 a"-CC - 252-151-Q31 8 1 2 4 "-CC - 2 5 3 - 151-93:
- I "2
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- Indicate safe shutdown lines , ,,., --
t Indicate inacces'ible n areas fi/ / U Y- )
RH 1a mujisa.
J.O.No. 12690.88 _ATTACEMENT A June 1, 1979 CATEGORY I SYSTEM LISTING (LARGE BORE PIPING O@Y) PAGE 2 OF 13 Q , Number of Base Line No.
{ a: b g !!! O y U
0 kg nd gND =QUhk' tW g I
q Plates That Apply to 79-0 2 o n 3-4"-CC - 324-151-03 OE # D0 D0 1 ~
4"-CC - 325-151-Q3
- I I 3 4 "-CC - 326-151-Q3 i 8 I 4"-CC - 327-151-Q3 4 1 2 4 =-CC - 354-151-03
- l I 2 4 "-CC - 3 5 5 -151 -03 - # ,
I 3 4"-CC - 357-157-Q3 2.
- I 2 4 "-CC - 359-151-Q3 -?_
- 2 1 2 4 "-CC - 3 8 4 - 151 -Q3 8 l 2
, 4 "-CC - 38 5-151-Q3
- i 2 4"-CC - 38 6-151-93 8) I 1 4 "-CC - 3 8 7- 151-Q3 ei i 4 4 "-CC - 3 8 8-151 -Q3 $I i 1 b **-CC - 24 8-151 - n3 *i I 6 "-CC - 4 7 0- 151 v.s l 2 6"-CC - 534-151-Q3
- i 3"-CC - 20 4-151-Q3 '
- 2 4"-CC - 208-151-Q3 4 1 6*-CC - 245-151-03
- 6"-cc 191-03 i *
- l 2 18"-CC - 114-151-03 . * * '
I 15 19 "--cc - 116-191-0 3 i la L I u 18"-CC - 118-151-03' 8-
- l* I I la 18"-CC - 130-151-03l *
- I I 1 8 "-CC - 25 5-151-031 *
- l l
_8=-CC - 25 6-151-031 *
- i I 8"-CC - 260-151-031
- la l 1 1 1 24"-CC 151-03 5 is 5 1 6 8"-CC - 476-151-02 I * .* I 1 6"-CC 151-03 1
- 1 6"-CC 151-Q3 I
- I i 3 6"-CC 151-03, I
- 1 6"-CC - 257-151-Q31 *
- 3 6"-CC - 261-151-031 *
- 2 18=-CC - 102-151-Q31 '* '
6 18"-CC - 101-151-Q3!
- 3 18"-CC - 106-151-Q3
- 4 8"-CC 151-Q3l a- q
- r7 ,
g 18"-CC - 109-151-Q3 ( 1
- Indicate safe shutdown lines
- Indicate inaccessible areas et gg I bk I1 bHiid]).[h/d,
J.O.No. 12690.88 ATTACHMEtt" A June 1, 1979
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CATEGORY I SYSTEM LISTING _
, (LARGE BOREJIPING NLY) PAGE 3 OF 13 x* Q- E o. $3 0
- a. W hb $g Number of Base Line No.
4$$
cJ < v a "83$_O Vhh El D o C. cJ 3 o OWB5 Plates That Apply to 79-02 n.
3"-CC 151-Q3 l 1 8"-CC - 465-151-03 i i 1 8"-CC - 466-151-03 i f 1 18=-CC 151-03 I i 1 1S"-CC - 105-151-Q3 I I i 1 18"-CC 151-Q3 24=-CC 151-03 L 'l 7 14 24"-CC 151-03 3 3 5 8 "--CC 151-03 7-. I 4 8 "-ce - R -191-m 'a $ 6 4 8"-CC - 19-151-03 It i 1 6"-CC - 35-151-03 L4 4 4 R 8"-CC - 321-151-03 1
. 6"-CC - 42-151-03 2. It 1 3 a i 3=-CC - 38-151-03 (* t i 2
! 6 "-CC 151-0 3
- l 4 5
! 3"-CC 151-Q3 82 2. 2. 6 i 14 "<C - 4 5-151-0 3 n I i 1 1 18"-CC 151-03 1 1 1 10=-CC 151-03 1 1 ?_. 10 12 =-CC - 4 6-151-Q3 2. 3 i 5 10"-CC 151-Q3 r 1 1 18"-CC - 103-151--03 18"-CC - 104-151-03 I i 1 18"-CC - 107-151-03 18=-CC - 108-151-03 2 24"-CC - 112-151-Q3 2. 2 2. 15
. I 8 "-CC - 323- 151 -Q3 4 6=-CC 151-Q3 ,
1 24"-CC - 113-151-03 l- 2 3"-CC - 235-151-03 4 4"-CC - 197-151-03 4 1 6"-CC - 202-151-Q3 8 2 1 6 "-CC - 24 9-151-02 ** 1 i 24"-CC - 125-151-03 4 4 u 6"-CC - 510-151-03 1 1 6"-CC - 511-151-03 -1 24"-CC - 266-151-Q3 2 8"-CC - SS-151-Q3 i 'l '? 7 6 = -CC - 515-151-Q3 i 1 6"-CC - 513-151-Q3 8
-- b2[ i01
- Indicate safe shutdown lines
- Indicate inaccessible areas ki
J.O.No. 12690.88 ATTACPFINT A June 1, 1979 CATEGORY I SYSTEM LISTING PAGE 4 OF 13 E~~~ .
(LARGE bog PIPING Of Y)
B Y % 5 Q Ej$ %o D k[.9 Number of Base T . J EC Ok QN QW Plates That Apply Line No.
- 6 Q$ $ -h h$ y $.E D to 79-02 8"-cc - u69-151-03 1 8"-CC - 259-151-03 4 8 "-CC - 517-151-02 4
- 1 6"-CC - 480-151-02 2. *
- 2 6"-CC - 481-151-02 3** I 3 3"-CC - 523-151-Q3 l f '2. a- 1 2 4"-CC - 525-151-03 i 3 6=-CC - 258-151-Q3 4 8 6"-CC - 265-151-03 8 8 6"-CC - 177-151-03 # -
1 6"-CC - 175-151-03
- 2 6"-CC - 518-151-Q3 8 1 6"-CC - 519-151-Q3 1 6=-CC - 526-151-Q3 i 4 4 4 6"-CC - 512-151-Q3 L i 2 6"-CC - 479-151-03 5 I 5 3"-CC - 145-151-03 $ 1 3"-CC - 146-151-03 I I CH - CHARGING AND VOLUMNE CONTROL CH SYSTEM 3"-CH -
- l 3=-CH 1503-Q2l l
- l l 7 3"-CH - 109-153W-02 *
- 1 1 3"-CH - 133-153W-Q2 *
- l- P_ l 3 3"-CH - 175-153W-Q3 9
- l 3 3"-CH 153W-Q2 4
- I 6 3 "<H 153W-Q2 *
- 3 3 3"-CH - 125-1503-Q1 4 9 24 3"-CH - 125-1503-Q2 3"-CH - 110-153W-Q2 . t 9 7 3"-CH - 108-153W-Q2 t i 8 7 -CH 1503-Q2 #4 1 3"-CH - 6 9-1503-Q2 I
- i i 1
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- Indicate safe shutdown lines ,.
- Indicate inaccessible areas L 'y, Wj f. i0~2 E Ub[A d j d h j u .l ? /
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J.O.No. 12690.88 ATTACHMENT _A June 1, 1979
= CATEGORY I SYSTEM LISTING PAGE 5 OF 13 (LARGE BORE PIPING ONIA) xwh W db d d O N O w
(y g y b, W@k k* k % Number of Base "g u dGg Plates That Apply Line No. @ y {g yh g j .y to 79-02 3"-CH 1503-02 *
- 1 4"-CH 1503-02 1 *
- I 6 7 3"-CH - 70-1503-02 *
- 1 un-CH - 76-1503-02 *
- u 3"-CH - 126-1502-01 *
- 1 18 u=-CH - lu-153W-02 *
- 1 3*-CH - 11u-153W-02 *
- 10 3"-CH -
80-1503-Q2 #
- 9 9 3"-CH 1503-02 1 1 #
- 1 1 3"-CH 1503-02 #
- 1 3"-CH - 10 6-153W-02 #
- 10 3"-CH -
107-153W-02 $W 1 CV - CCNTAINMENT VACUUM CV SYSTEM 8"-CV-8-151-Q2 l4#
- 4 l l u CVP - CONTAINMENT VENTILATION AND PRESSURIZATION CVP SYSTD4 8"-CVP 121-Q2 l l d I l 3 18"-CVP 121-02 I I *! I I 5 DG - COOLANT SYSTEM LOOP CRAINS DG SYSTEM 3"-DG 152-03 1
- l 3 "-DG - 23 7- 15 2-Q3 l t l 2 FC - FUEL POOL COOLING AND PURIFICAIION SYSTEM FC SYSTEM 6"-?C -
38-152-03 10"-FC 152-Q3 l l l 7
- Indicate safe shutdown lines 527 i03
$ Indicate inaccessible areas
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jongGy
- W u i u cu r;,
J.O.No. 12690.88 ATTACHMENT A June 1, 1979 CATEGORY I SYSTEM LISTING T (LARGE BORE PIPING ONLY) PAGE 6 OF 13 J dS qwW d 2 jam s *o e qhE Gy }g$ "
g y o@ k b 'dci Nu: ber of Base 8T d Plates That Apply N e 2N% *O Line No. _*2o c! aE 2;' of 3 %o gg q O 6!
. C a
to 79-02 6"-FC 152-03 1 1 6"-FC 152-03 3 '3 3 6"-FC 152-Q3 2_ 2. 2 6"-FC 152-03 8 '7 8 6"-FC 152-Q3 2 6"-FC 152-03 4 "-FC - 2 4 - 15 2 -Q 3 3 GW - GAS WASTE GW SYSTEM 10 "-GW 154-03 2
. 10"-GW 154-Q3 .
8"-GW 152-Q3 l t 1 1 8"-GW - 49-154-Q3 -
8"-GW - 50-154-Q3 8*-GW - 51-154-Q3 i 3"-GW - 42-152-Q3 i NSL - NEUTRON SHIFLD TANK COOLING NSL SYSTEM
, I 6"-NSL T52-Q3 l t l 7 6"-NSL 152-Q3 1 4 1 5 l
OL - DIESEL GENERATOR OIL LINE OL SYSTEM i
. l 3 =-OL 151-Q3 4 *le 3 l l 7 3a-OL 151-Q3 '3 4 * '3 l 4 QS - QUENCH SPRAY QS SYSTEM !g g / ] ] j{
r 6=-OS 1533-03
- 5 12"-QS 153B-Q3 3
- 5 12"-OS 153B-Q3 7
- 2 o lou-QS 1533-Q3 g #
- i zu
- Indicate safe shutdown lines
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- Indicate inaccessible areas , -/ , , (#
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J.O.No. 12690.88 ATTACHMENT A June 1, 1979 CATEGORY I SYSTEM LISTING '
(LARGE BORE PIPING OgEY) PAGE 7 OF 13 1
is W w
- h m- >0 dgd a dud $O 5 %
gs] $ EjC $hf Number of Base d[ 83d$,oja dDg yud Plates That Apply Line No. egy o
8 3 d e::
e a o o. o3o v L = to 79-0 2-10"-QS - 4-153B-03 llo * * /6 21 8"-OS - 23-153A-O3 4
- 4"-OS - 6-153B-03 *l 8*-OS - 22-153A-03 *M RC - REACTOR COOLAlfr RC SYSTEM 8"-RC 2501R-01 #M 8"-RC 2501R-01 * *4 8 "-RC - 3 9-2 5 01R-Olt t d 14 "-RC - 8 6-250 TR-01 9 d ?
6"-hC - 9 8- 15 0 2-01 * *1 2 6"-RC 1502-Q1 * *1 2 3"-RC - 105-1502-01 i e **
- 9 3"-RC - 107-1502-01 1 *
- 1 1 3"-RC - 106-1502-011L4 # * '
I 4 4"-RC - 71-1502-01 1 #
- 1 10 4"-RC - 72-1502-01 3 4
- 15 8 "-RC 250 TR-O T *
- 6"-RC - 104-1502-011 *
- 7 6"-RC 1502-01, #
- 2 3 *-RC - 2 3- 15 0 2-01 *
- 1 3"-RC 1502-01 *
- 1 3=-RC 1502-01 *
- 1 3"-RC - 160-153WO2 2- *
- 2- ?
RH - RESIDUAL HEAT RH SYS*EM L} / / jQIg 14"-RR - 1-1502-01 2. * *k 9 14"-RH - 2-602-02 l 2- *
- 1 10"-RH - 4-602-02 *
- 2 10"-RH - 5-602-02 * *4 A 12"-RH - 9-602-02 *
- 6 10"-RH - 17-602-02 1 # * -1 14"-RH 602-Q2 4 4** 4 13 10 "-RH - 2 3-15 0 2-Q 1 #
- 1 10 "-RH 1502-01 #
- 4 10"-RH 602-02 *
- 14
- Indicate safe shutdown lines
- Indicate inaccessible areas pgge3 g{ g,s eprqrn 3
J.O.No. 12690.88 ATTACPyENT A June 1, 1979 CATEGORY I SYSTEM LISTING F_
(LARGE EORE PIPING ONLY) PAGE 8 OF 13 x f 'd dd N3 T U$'d EW b 8 *0 o E b Nu::tber of Base j" d Z'U o y "" Plates That Apply Line No. 42 _*D C 4 D d$ .* O to 79-02 6:! < U ed @ g O q, g O 12*-RH 602-02 #
- 2 10"-RH 602-02 *
- 1 10 "-RH 6 0 2-02 1
- 2 10"-RH 602-02 '
t
- 3 12"-RH 602-Q2 t.f 8
- 18 6"-RH 15 2-02 i
- 6 4"-RH 152-Q2 8
- 2 RS - RECIRCULATION SPRAY RS SYSTEM 4"-RS 153B-Q2 # *j 4"-RS - 21-153A-92 * *.
8"-RS - 22-153A-02 *
- 8"-RS - 23-153A-02 *
- 8"-RS - 24-153A-02 f
- 12"-RS 153B-02 *
- 3 12"-RS 153B-Q2 8
- 3 10"-RS 153B-02 *
- 7 10"-RS 153B-Q2 l #
- 2 12"-RS 153B-Q21 *
- in 10"-RS 153B-02 *
- 10"-RS 153B-02 *
SDHV -STEAM DELAY EEAT LINE CONIROL VALVE SDEV SYSTEM 3"-SDEV 1-6 01-02 M 3*-SDHV 601-02
- 3*-SDEV 601-Q2
- 4 "-SDEV 601-Q 2
- 2 1 527 106
- fi
- Indicate safe shutdown lines
- Indicate inaccessible areas h (rygy du[] Luc!)d,
J.O.No. 12690.88 ATTACHMEttr A June 1, 1979 s:. CATEGORY I SYSTEM LISTINd i
(LARGE BORE PIPING ONLY) PAGE 9 OF 13 c
( bW d2 5 Uu:1ber of Base
- Line No.
- g 2 v oy Plates That Apply to 79-02 d d [ h (
SHP - HIGH PRESSURE STEAM SHP SYSTEM 3*-SHP 601-02 e i 4 3 2 "-S EP - 5 6 -6 01-02 4 -
3 2 "-SHP - 5 7-6 01-02 # ' _
3 2 "-SHP - 5 8-6 01-02 I
- 2 3"-SHP 601-02 4
- 4 e 3 "-SE P - 2 6 -6 01-0 2 "b
- 3 3 3"-SHP 601-02 "2.
_ 6"-SI 150 2-Q1
- 9 10 4 "-SI - 12 8-15 03-Q2! ,
9 1-12"-SI 153W-Q3 l 9 6 -
8"-SI 153W-Q3 i ( 9 1 3 15 12 *-SI 153A-Q2 9 8 10"-SI.- 16-153W-Q21 9 4 12=-SI - 101-1502-01 s9 14 12a-SI - 110-602-Q2 s9 3 12=-SI - 111-1502-Q1
- 9 2 6 =-SI - 4 4-153W-Q2 ,
8 9 e 9 12"-SI 153A-Q2
10"-SI 133W-Q2
- 1 6"-SI 1502-Q1 *
- 3 6a-SI - 2r-1502-Q1 8 9 '6 3 =-S I - 145-153W-Q2 9 8 3 "-SI 1503-Q 1 *
- i 12 6"-SI 1502-Q1 *
- 12 6 "-SI - 7 4 -15 0 2-Q 1 *
- 4
=
- Indicate safe shutdown lines 52/ 107
- Indicate inaccessible areas g n n r) ,n ~ ,,,n33, bhl i [' l ,
J.O.No. 12690.88 ATTACEMENT A June 1, 1979 CATEGORY I SYSTEM LISTING M (LARGE BORE PIPING ONLY) PAGE 10 OF 13 O -
g (y E N N c1 N $Q k gw a$ tb e d $ 0 Nunber of Base Thpg oBg u$ $ gg Plates That Apply Line No. g $g y3h y to 79-02 3"-SI - 140-1503-01 ** 6 6"-SI - 30-1502-01 s* 16 6"-SI - 29-1502-Q1 ** 5 3"-SI - 56-1503-Q2
- 2 4"-SI - 75-1503-Q2
- I 4 3"-SI - 130-1503-Q1
- 5 3"-SI - 81-1503-Q2 i 5** 3 9 3"-SI - 60-1503-02 ** 2 3=-SI -
130 -150 3-Q2 s* 7 3"-SI - 141-1503-Q2 3"-SI - 134-1503-Q1 4
- 5
'
- 3 9 3"-SI - 133-1503-Q2 , l WAPD - STEAM GENERATOR ATFTT T ARY FEEDWATER PUMP DISCHARGE WAPD SYS*EM i
3"-WAPD 601-Q3 f *. I 2 ~
3"-WAPD -
14-601-Q3
- I 6"-WAPD 601-Q3 G
- 9 6"-WAPD - ?-601-Q3 3
- 6 4"-WAPD 601-Q3 l
- 1
~~
4"-WAPD 601-Q3
- 2 4"-WAPD 601-Q3 i 1 3"-WAPD 601 -Q 3 -
- 3 3"-WAPD 601-Q3
- 3 VG - HYDROGENATED VENTS VG SYSTEM
, I 4 "-VG 152-Q3 l , 10 4=-VG 152-Q3 4 4"-VG 152-Q3 7 VS - CONTROL ROOM VENTILATION SYSTEM VS SYSTEM -
4a-VS 151-Q3 6
- Indicate safe shutdown lines ~/ { l F t Indicate inaccessible areas Q;, ygjgg[g
J .O.::o . 12690.88 ATTACHMENT A June 1, 1979
~~'_
CATEGORY I SYSTEM LISTING
{LARGE BORE PIPING ONLY) PAGE 11 OF 13 g IAW> a N d md3 u o o xu k h%a.5 a 3 3% d d a oSM Number of B.: se '
"Mj $6W O $ $0ig Plates That Apply Line No. E o Ac o e3 82 a
D$"S 43N S Qq
?O $
d to 79-02 d
WD - DEMINERALIZED WATER WD SYSTEM 8"-WD 151-Q3
- 11 6"-WD 151-03
- 6 4"-WD 151-Q3
- 2 6*-WD 151-Q3
- 10 6 % T 151-03 8.
- 8 WFPD - STEAM GENERATOR FEEDWATRR PUMP DISCPARGE WFPD SYSTEM 16"-WFPD 601-Q21 1
- 2.
16 %'FPD 601-Q21 *
- 2.
16 % FPD o01-Q21 *
- 2/
WGC3 - GENERATOR WA m BLOWDOWN WGCB SYSTEM 3*-WGCB 601-Q21 *
- I 7 3 "-WGCB 6 01-Q2 ' t
- 8
_3 "-WG CB 6 01-Q 2 8
- 5 6"-WR - 215-151-Q3 4 1 WR - RIVER WATER WR SYSTEM 6"-WR 151-Q3 l 3 3"-WR 151-Q3 2 3"-WR 151-Q3 2 3"-WR 151-Q3 6"-WR 151-Q3' G G, / 7 3"-WR 151-Q3 6"-WR 151-Q3 ?_ 2, 7 3 %R 151-Q3 13 3"-WR 151-Q3 8 4"-WR 151-Q3 8 2 g,/-.
u ,09
='
- Indicate safe shutdown lines
- Indicate inaccessible areas 8
ODf0ID U e[ iLWQh}[A
4 J.O.No. 12690.88 AT'"ACEMENT A June 1, 1979
~
, CATEGORY I SYSTEM LISTING (LARGE BORE PIPING ONLY) PAGE 12 OF 13 x mY da N ormY g5 h$ d 0o 0 k- Nu:aber of Base gE $y 2
C
$% Plates That Apply Line No. -y q $ $D g w $]{8Qq Q o to 79-02 4*-Wr 151-Q3 #
4"-WR 151-Q3 # 4 4 "-WR 151-Q3
- 2 4 "--WR - 9 6-151-Q3 1 4"-WR 151-Q3 3 6"-WR 151-Q3 1 6"-WR - 212-151-Q3 2 6"-WR - 213-151-Q3 1 1 3"-WR 151-Q3 3"-WR 151-Q3 3"-WR - 108-151-Q3 5 3"-hR - 110- 151-Q 3
_ 6"-WR - 118-153A-Q3 4
_, 6"-WR - 119-301-Q3 4# 4 3 13 6"-WR - 181-151-Q3 ___l 1 6"-WR - 182-151-Q3 -^ j 1 WR - RIVER WATER WR SYST E 14"-WR. - 6 4-151-Q2 l t * ! 3 lu=-WR 151-Q2 * *l i 3 14"-WR 151-Q2 *
- I 2 14"-WR 151-Q2 ~# * '
3 8"-WR - 22 8-151-Q3
- 1 8a-WR - 229-151-Q3
- 1-
. 24"-WR 151-Q3 $ 1 24=-WR - 100-151-93 4 4 14"-WR 151-Q3 24"-WR 151-Q3 12 30"-WR 151-93 42 24"-WR 151-Q3 20 24" WR 151-Q3 36 24 "-WR 151-Q3 6 24"-WR 151-Q3 10
,24"-WR 151-Q3 1 8"-WR - 234-151-Q3 I i 1 6"-WR - 214-151-Q3 'd 2 527 110 2
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- Indicate safe shutdown lines C v m en eng'
- Indicate inaccessible areas (@.g g] {
J .O .No . 12690.88 ArrACPrsNT A June 1, 1979
" ~ "
CATEGORY I SYSTEM LISTING (LARGE BORE PIPING ONLY) PAGE 13 OF 13 Number of Base Plates That 79 ply i Line No. to 79-02 Total Nu:nber of Total Nu:nber Plates That Apply of Lines to 79-02 360 1,4G G i
~
52/ iii 2=
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- Indicate sa fe shutdown lines t Indicate inaccessible areas e
e
\
ATT/.C.HMN F if
- DUQUESNE LIGHT COMPANY Beaver Valley Power Station - Unit No. 1 Procedure No. Il959/20148-P1 OFE/EM No. 11959/20148 Revision No. 2 Purchase Requisition No. NA DCP No. NA Purchase Order No. NA APPROVALS:
Struct. Mech. Elect. Q/A Engr. Engr. Engr. Mgr. PSE SSE
'h - -
L t @p g f
@NM/ithc / W /,?
t PROCEDURE FOR INSPECTION OF PIPE SUPPORT BASEPLATES THAT USE CONCRETE EXPANSION ANCHOR BOLTS IN SEISMIC CATEGORY I SYSTEMS DATED June 4, 1979 Rev. 1 June 7, 1979 Rev. 2 June 20, 1979/ }}7 BV1, 7902-01 Procedure for Field Inspection of Drawing of Record Verifications BV1, 7902-02 Procedure for Field Inspection of Self-Drilling (Shell) Concrete Expansion Anchors BV1, 7902-03 Procedure for Field Inspection of Drilled-In Expansion Type (External Thread-Wedge) Concrete Anchors Base Plate Work Authorization ,
~-n'R3 c.j g w] ,i
J.O.No. 12690.88 Jugg 4, 1979. Rev. 1 June 7 Rev. 2 June 2d,19791979 .E :-- ' ' PROCEDURE FOR i.f 0 ' INSPECTION OF FTPE SUPPORT 3ASEPLATES THAT USE CONCRETE ENPANSION A.'!CHOR 30r,73 IN SEISMIC CATEGORY I SYSTD:S Beaver Valley Power Station - Unit No. 1 Duquesne Light Company Pittsburgh, Pennsylvi.nia w gn, a Ij3 Jt/ i Stone & k'ebster Engineering Cerporation Boston, M2ssachusetts ..,.7'
- .. ~
BEAVER VALLEY POVER STATION - UNIT NO.1 DUQUESNE LIGHT COMPANI g-t(E" ' INSPECTION OF FI?E SU?? ORT SASEPLATZ5 THAT USE COIICRETE EXPA':5:GN ANCF.OR SOLIS IN SEISMIC CATIGORv_ I 5I5 rG I. PURPOSE This procedure establishes guidelines for the inspection of pipe support baseplates that use concrete expansion encher bolts in seis=ie Catagery I systa=s as out ed in II Eulletic Uc. 79-02 dated March 8, 1979, U.S. Nuclear Reg"'e:c y Cc- 4 ssion Office of Inspection W Enforcenent. II. ATTAC*rDENTS A. Procedure for field inspection of draving of record verification, BV-1, 7902-01. B. Procedure for field inspection of Self-drilling (Shell) Cencrete Expansion Anchors, BV-1, 7902-02. C. Procedure for field inspection of Drilled-in Expansion Type (Externally Threaded Vedge) Cencrete Anchers, SV-1, 7902-03. D. Base Plate Work Authorization 4 III. INSPECTION
\
The inspection shall be performed to verify that the as-built conditien D of the pipe support base plates that use ecnerete expansion anchor bolts in Seis=ic Category I syste=s is consistent with the drawings of record and that.the concrete expansien ancher bolts are installed properly to achieve bolt integrity. The inspections and measurc=ents shall be perfor=ed by personnel trained in the use of devices necessa y to deter =ine the properties required in the above attach =ents. The infor=atien ecmpiled shall be ec:plete and uniform for possible further analysis. The infor=ation eccpiled shall censist of verificatien, dimensioning, certification and reviev as required by the above attachments. IV. IOCUMENTATION
}}J }}4 The data shall be ec= piled by the Stone & Vebster Engineering Corporation SEO representative or Duquesne Light Company representative and shall be forwarded to Stone & Vebster Engineering Corporatien Beaver Valley Unit No. 1 Task Force Project Engineer (TPE) Besten office for evaluatien.
One copy of all records shall be =aintained at the site by DLC. The basic documentation shall censist of dravings of record, and 6 cumentation/ data sheets. Each line package ergir_ates frca BV-1 Each piping line is designated into 3 11700 line designation table.
. portions that are between penetrations, anchors, :otor operator valves, s canifolds, class change or piping si::e change. ,
k9 M r w y] p % r R l}
Rev. 1 5%# v::'" All inspections shall be performed and certified by the inspector as to the verification, dimensioning and testing as required by the above attachments. When all items have been perforned and certified, the line package including documentation shall be reviewed and signed by the reviewer that all items have been verified, dimensioned, certified and tested before the packages are transmitted to the TPE. V. Work Authorization No work shall be started until Baseplate Work Authorization sheet has been signed by all parties. ! VI. Support Clearances After final installation torques per procedures BV1, 7902-02 f and BV1, 7902-03, the clearances on the support as required - by as-built sketch shall be verified. If not in compliance, this shall be recorded and forwarded to Engineers for action. VII. Baseplate Orientation Prior to torque test, the outline of the plate shall be i determined by placing tape on wall or ceiling on two (2) perpendicular sides of the bastplate. If final installation orientation does not comply with original orientation, this shall be forwarded to Engineers for action. 527 i15
. J.O. No. 12690.88 BV-1, 7902-01 Page 1 of 4 Rev. 1 rz PROCEDURE FOR FIELD INSPECTION OF T[: . .
DRAWING OF RECORD VERIFICATION I. PURPOSE This procedure covers the inspection and documentation required to verify the as-built condition of the pipe support base plates that use concrete expansion anchor bolts with the drawing of record. II. ATTACHMENTS A. Form No. 12690.88A B. Form No. 12690.88B III. INSPECTION AND DOCUMENTATION RECORD The inspection and documentation record shall be performed to establish that the as-built condition of the pipe support base-plates that use concrete expansion anchor bolts in seismic Category I systems is consistent with the drawing of record and that the information compiled is complete and uniform for possible further analysis. The information compiled shall consist of verification, dimensioning, and certification as required by the attached Form 12690.88A. The inspection shall include baseplates, anchor bolts, pipe supports, and attachments to and interferences with the base-plates. Any deviation from the drawing of record shall be recorded on the drawing of record and where additional as-built sketches are required Form 12690.88B shall be used. The type of anchor i.e. bolts (B), threaded rod and nut (T), or sedge i type (W) shall be listed on the as-built sketch, Tolerances for dimensioning of plate sizes , bolt location and location dimensions shall be considered acceptable to w it hin 1/16 in. Tolerances for orientation of support to baseplate shall be considered acceptable if within + 3 degrees. The angular measurement shall be obtained by placing or siting along the instrument and measuring the angle of the support with respect j to the baseplate. Measurements shall be tei.en in two directions - which are perpendicular to each other. Measurements shall be recorded on the as-built sketch. 527 i16 i s.
SHEET OF FIELD INSPECTION PROCEDURE FOR CAT I PIPE SUPPORTS
._ , , WITH CONCRETE EXPANSION ANCHOR BOLTS
[ CLIENT: CUCUENSE LIGHT COMPANY PROJECT' SE AVER VALt.EY POWER STATION UNIT NUM9ER 1 JOBNUMBER 12690.88 FORM NO. 12 6 9 0. 8 8 A LINE NO. ISO NO. R P OWG. NO. HANGER NO. SUPPCRT NO. _ SUPPCRT OWG. NO. BUILDING FLOCR ELEVATION LCC.
- CERTIFIED *++
c 8 INSPECTION AND E si CHECx(s) DOCUMENTATION RECORD $ 5 BY SIGNATURE iF w 2 E DATE CHANGE
> 5 RECUIRED BASE PL ATES SIZE (W!O H AND LENGTH)
- 2. THICKNESS X 3* ORIENTATICN CF PLATE WITH RESPECT TO PIPE x
. (IF CIFFERENT SHOW CN SKETCH)
- 4. GUSSET PLATES AND OTHER ATTACHMENTS ( F DIFFERENT SHOW CN SKETCH) 5 EXTRA HCLES (LCCATION AND SIZE) X 6.
ENLARGED HOLES ( LOCATION AND S!!E) f fXf 7, O! STANCE FROM TCP CF PLATE TO CONCRETE AT FCUR X CCRNERS , INO!CATE GRCUT ANCHCR SCLTS l NUMBER OF SCLTS l
- 9. TYPE (SCLT HEAD OR Sn!O) X f
- 10. 80LT CIAMETER X l
- 11. CCNFIGURATICN (IF CIFFERENT SHCW CN SKETCH) lX f
- 12. SPACING - CENTER TO CENTER EACH WAY lXf f f
- 13. EOGE 0:5 ANCE FRCM NEAREST EOLT (7 )TO ECGE OF C C *. ~TE CR OPENING IF LESS TH AN 8 INCHES CIST RCM BCLT (9. ) IN ADJ ACENT BASE PLATES TO 14*
NEARE;T SOLT IF LESS THAN 11 INCHES x
, q j 'g } f
- 15. X DISTANCE FROM EDGE OF PLATE TO CENTERLINE OF PIPE l 16* X (LOCATICN IF DIFFERENT OF SUPPORT SHCW ON THE ON SKETCH) BASE
$ angillaT PLATE OTientation A TTACHMENTS
~ x INTERFERENCES THAT EXISTWITHIN 6 INCHES OF PLATE
+ VERIFIED-ClMENSICNS CHECXED WITH THOSE SHOWN CN CRAWINGS CF RECCRO.
** 01NENSICN -RECUlRED CIMENSION CR SKETCH AS RECUIRED.
._/ ** + CERTIF'E0 - AS IN CCMPLIANCE WITH THis PRCCEOURE TO HAVE VERIFIED,0!.YENSiCNEC CR SHCWN CN 3 KETCH.
REVIEWER S GNATURE: DATE:
SAMPLE ~ -
,, 3 q g ORIENTATION h
,4 ii gCL PL 7 l Uun m>Pauw'm} }- @
t EDGE OF CCNC. I READHEAD SELF DRILL N h h i h / ENLARGED HOLE v . m /i @
@ ,i i + >
z.g . . 3"READHEAD T SELF oRiLL( m ) so's g , i @ e c,h
, rCL. PL E TS TS z x z
/a1 l G4 @- l I
e e . . 3" O PL 7 l l l l l , w/1 "gget,7, g p } l h 7 [
- l t"CONDUli gFLUSH W/PL 'Q.j ,1
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J ,,f
= B.' ?L FLUSH W/ GROUT
/
e / t O PLAN O
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FOU R CORNERS. -(LOO KING D OWN ) LEFT R HT LE RIGHf , , , , , , , NGULAR MEASUREMENTS PL e 8 s
' - t O C l
h NO OF BOLTS PIF 7l STANDARD DIMENSIONS FOR 30 JADS h TYPE (BOLT HEA? OR STUD) , h BO' .AMETER ,, ,_
," '/2 ! k4 l /8 l /8 1 YES '\ \ 8 */s l '5/ si l I '/ is l t '/i s l t '/4 INTERFERENCES THAT eq[--
- EXIST WITHiti 6 INCHES NO 3L 3 /4 l 1/s j 15 /.3l1'/
3 4 llI 6 . 7/g j5f g17 j7 l3 7 1 _ SIGN ATURE TlTLE: PIPE SUPPORT BASE l CueNT ctC I sy IcATE PLATES USING CONCRETE PROJECT ev-UNIT NO. i PREFARER I l EXPANSION ANCHOR SOLTS I J 0 No.12s30.88 Rsviews.a l l AS BUILT SUPPORT NO. SXETCH NUMSER zSx-lRsvisicNsI l
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- v. .
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rJ 'L. ~l I 1!Cf L ' SI G N ATU R E TITLE: PIPE SUPPORT BASE CLIENT DLC PROJECT BV-U NIT NO.1
/ I BY DATE I PLATES USING CONCRETE l EXP ANSION A N CHOR SO LT S J.O. NC.12690.&S PREPARER I l REVIEWER l l AS ButLT SUPPORT NO. SKET !H NUMBER ZSK-REVISIONS l l
- ev. Page 1 of 5 PROCEDURE FOR FIELD INSPECTION OF SELF-DRILLING (SHELL) CONCRETE EXPANSION ANCHORS (7902-02) I. PURPOSE This procedure covers the inspection and documentation required to-verify the integrity of self-drilling (shell) concrete anchor installa. ion. II. ATTACHMENTS A. Pipe Support evaluation, 7902-02 Attachment A. III. INSPECTION AND DOCUMENTATION RECORD The following inspections and measurements shall be performed by personnel trained in the use of the devices necessary to determine the properties shown in the attached Table (Attach-ment A). The required information for each support shall be recorded by filling out a separate sheet. pi In the detailed instructions which follow, the paragraph numbers correspond to the column heading in the table. In column number 8, record the column number of any characteristic C for each anchor _in the support which fails to comply with the requirements for that characteristic.
- 1. Record the numerical identity of each anchor in the plate as illustrated on the sketch. Supports which do not contain the proper number of anchors as indicated by design drawings or are missing bolts shall be indicated in ,
column 8. Iq For anchors which are missing bolts, a new bolt of required length shall be inserted ad torqued to the minimum re-quirements of paragraph 7 herein. l1
- 2. Record the anchor size by measuring the bolt or threaded rod and indicate whether that size is typical or indicate the appropriate size when it varies. Anchors of a different size than drawing shall be indicated in column 8.
l1
- 3. Bolt head or nut back-off and/or installation torque shall be accomplished using a calibrated manually-operated torque wrench (calibrated interval not to exceed two months). A calibration variation of + 4% cf full scale Q is acceptable.
Record required installation torque for each bolt or nut as shown by table in paragraph 7. _ , jq 527 i20
Page 2 of 5 Rev. 2 _;;. 4. During initial disassembly of anchors, the back-off T"~ torque shall be determined and recorded. The values shall be determined by setting the torque wrench at the required installation torque listed in paragraph 7. If installation torque listed is met or exceeded, list as Acceptable (A) in column 4. If installation torque is not obtained, list as Rejected (R) in column 4. For the first five plates, one bolt on each plate shall ! have a back-off torque value established following the j shim torque test. (See paragraph 9). This shall be l established by setting at the installation torque and j increasing in 5 ft-lbs increments. This information shall be recorded in comment section of Pipe Support i Evaluation Sheet. The last bolt torqued for the shim test shall be the one used for the back-off torque. i
- 5. Remove one bolt or nut and threaded rod (See paragraph 8) l at a time and visually observe location of shell. Record ;
location of shell as into concrete (I), flush with l concrete (F), or projecting out from concrete (P) in ! p column SA. Measure and record in Column 5B the distance iL from the top of the baseplate to the top of the shell. l Also measure and record in column 8* the distance from the top of the baseplate to the top of the plug. j If the threaded rod cannot be removed, then the depth ' b of the shell shall be measured with the rod in-place. If impossible to measure, a visual observation may , be performed for the shell location as noted above in column SA. l i If the shell is not touching the baseplate, install the i nut or Dolt and torque to the installation torque re-quirements. Remove the nut or bolt and verify by the same method used above that the shell has not moved. If the shell distance is equal to or less than that recorded in column 5B by 1/16" or less or is not touching the bottom of the plate by visual observation then record as acceptable (A) in column SC. If the shell distance is less than that recorded in column SB by more than 1/16" or is touching the bottom of the plate by visual observation then record as reject (R) in column SC. If the shell is initially in contact with the baseplate note as touching (T) in column 5A. Then install nut or bolt and torque to the installation torque requirements while noting NA in columns 5B and 5C and action item in column 8. 527 121
~
. Page 3 of 5 Rev. 2 55_ , ,
- 6. Record the thread engagement length of each bolt
[i which does not have a minimum thread engagement equal to the diameter of the bolt plus 1/8 inch. Calculate measurement by subtracting from the length of the bolt the sum of the thickness of the attachment (base-plate), any washers / shims, grout thickness, plus the distance to the outer end of the shell when it extends into the concrete. The length of the bolt is measured from the underside of the head to the end of the bolt. Bolts not having the proper thread engage-ment shall be replaced with bolts of adequate length, retorqued as required in paragraph 5, and shall be indicated in column 8 as being replaced with the notation "repl". I
- 7. Bolts and threaded rods with nuts shall be reinstalled after performing the other inspections as required herein. For double nut installations, after reinstal-lation of the threaded rod and torquing of the inner nu c to the foregoing criteria, the outer nut shall be installed to 1/4 turn past the finger tight position.
Reinstall the bolts to the installation torque as 7. follows: Size, In. Installation Torque, ft-lbs j
~
( 3/8 20 l 1/2 30 I 5/8 45 - 3/4 70 7/8 95 When reinstalled to required installation torque record as acceptable (A). If required installation torque is ' not obtainable, record reject (R). s
- 8. When a threaded rod and nut installation is encountered, it shall be verified that it is a stud and nut, not a wedge type anchor. If it is determined to be a wedge ;
type anchor, use BV-1, 7902-03 for tests and doc'imenta- ! tion. !
- 9. The following shimming method to verify anchor insta.T-lation shall be used _nitially to establish baseline ,
data and later as directed by the Engineers. 527 i22
Page 4 of 5 Rev. 2 _:=. (5 l a) Remove all piping load on plate and provide - adequate supports for these loads. The temporary supports shall be as per Stone and Webster sketches, or as modified in situ by Stone and Webster. b) Loosen all nuts or bolt heads on the plate, deter-mining back-off torque as described in paragraph 4. Loosen all nuts or bolts, one at a time, a maximum of 1/16" from plate. Note the sequence of bolt loosening. Observe any movement of the support as each bolt is loosened. If plate has moved, inspect support to determine if pipe is still loading j support. If this is the case, adjust or revise I temporary supports to pick-up pipe loads. Loosen j bolts further by turning each bolt one full turn, i one at a time, in the same sequence as above until it is determined that the pipe is no longer loading support and temporary support is adequate. , c) Insert four 1/4 inch minimum steel shim plates no i smaller than eight oquare inches per shim in between the baseplate and the face of the concrete. , t d) Tighten all nuts or bolt heads adequately so that 'n
._ the baseplate is snug against the shims. L
( e) Prior to torquing to the installation torque re-quirements and removing one bolt at a time . (allowing no more than one bolt out of a plate at any time), measure the distance from the top surface of the baserlate to the top of the shell and record in columt 5B. Measure the distance from the top of the baseplate to the anchor plug and record in column 8*. The baseplate shall be snug at this time. After torquing to the installation requirements (See paragraph 9f) and with the plate torqued, remove one bolt at a time - Note: Determine back-off torque for first five (5) plates as i described ir. paragraph 4 - (again allowing no - r rc than one bolt out of a plate at any time) ! a,a emeasure tne distance from the top of the l base, late to the top of the shell. j If the shell distance is equal to or less than that recorded in column 5B by 1/16" or less, then i record as acceptable (A) in column SC. If the ! shell distance is less than that recorced in i Column 5B by more than 1/16", then record as l' reject (R) in column SC.
Rev. 2 Bolts shall be tightened to the installation
== f) @ torque values using a d2]qonal sequence. The bolts for shim torque test do not have to be original bolts. The bolts shall be of a proper length to assure minimum thread engagement and to prevent bottoming of threads. '
g) If the shells / bolts are acceptable the shims shall be removed, baseplates reinstalled and j bolts torqued to final installation torque re- l quirements. l The final installation torque after shimming l shall be accomplished in increments as shown in j the table below: ; Initial Torque Increments Size (ft-lbs) (ft-lbs) i 3/8 10 15-20 : 1/2 10 15-20-25-30 , i 5/8 10 20-30-45 f 3/4 30 40-50-60-70
' 9, 7/8 30 40-50-60-70-80-95 NOTE: The first five (5) baseplates shall have the '
time required to torque recorded (in minutes). ; This shall be noted in " comment" section of Pipe Support Evaluation Sheet. , The final installation tarque shall be performed twice to assure that all bolts are set at the final i installation torque. When toreted properly, record acceptable (A) in column 4. 12 torque is not obtainable, record reject (R) in column 4. The bolts shall be the original bolts providing minimum thread engagemenc. h) If the shells / bolts are rej ected, the corrective action shall be determined by the Engineers. i) Remove the temporary supports. ; i 52/ i24
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BV1, 7902-0
. J.O. NO. 12690.88 Rev. 2 Page 1 of 4 .tr*
k? - ' PROCEDifRE FOR FIELD INSPECTION OF DRILLED-IN ' EXPANSION TYPE (EXTERNALLY THREADED WEDGE) CONCRETE ANCHORS 7902-03 I. PURPOSE O' This procedure covers the inspection and documentation required to verify the integrity of drilled-in expansion type (externally threaded wedge) concrete anchor installation. II. ATTACHMENTS . I A. Pipe Support Evaluation, 7902-03 Attachment A B. Ultrasonic Determination of Installed Anchor Bolt Lengths, 7902-03 Attachment B. . ( 527 i27 =
Rev. 2 Page 2 of 4 III. INSPECTION AND DOCUMENTATION RECORD f b The following it.spections and measurements shall be performed by personnel trained in the use of the devices necessary to determine the properties shown in the attached table (Attachment A). The required information for each s" port shall be recorded by filling out a separate sheet. In the detailed instructions which follow, the paragraph numbers correspond ~to the column heading in the table. In column number 8, record the column number of any characteristic for each anchor in the support which fails to comply with the requirements for that characteristic.
- 1. Record the numerical identity of each anchor in the support as illustrated on the sketch. Supports which do not contain the proper number of anchors as indicated by design drawing or have missing anchors shall be indicated in column 8.
For anchors which are missing, a replacement anchor of correct size shall be obtained and installed after verifying by S-measurements the hole diameter and depth. The notation " rep 1" shall then be added to column 1.
- 2. Indicate the number of the anchor which does not have full thread engagement of the nut (nut at least flush with end of anchor). Record as " Full" or " Partial", or indicate
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L whether the nut is " missing", as applicable. Anchors which do not meet the nut engagement requirement shall be indicated in column 8. For anchors which are missing nuts, a new nut shc11 be installed and torqued to the minimum requirements of paragraph 7 and noted as replaced (" rep 1") . If the nut is - only partially engaged, then the amount of thread engagement lp shall be determined and listed in the " comment" Section of the - L Pipe Support Evaluation Sheet. This information .shall be forwarded to the Engineers for action. If a double nutted anchor with partial thread engagement is i found list as " top nut partial" (TNP) and measure thread engagement for the top nut, list in " Comment" Section of the q - Pipe Support Evaluation Sheet and proceed with test. ,
- 3. Record the anchor size by measuring the diameter of the anchor.
Supports which contain anchors of less than required size shall be indicated in column 8.
- 4. Record each anchor length after determination in accordance with a procedure similar to Attachment B, Ultrasonic Determina-tion of Installed Anchor Bolt Lengths. If the original installa-tion Ultrasonic Determination of installed anchor bolt lengths are traceable to the anchors being inspected, then the new UT 9.
test may be WAIVED and the previous UT test report attached to the Pipe Support Evaluation Sheet. m
Rev. 2 Page 3 of 4 s= '
- d. Record the proj ection of each anchor beyond the face of the Ye concrete. This dimensionshall be calculated by adding the thickness of the attachment (base plate) , and grout to the measured proj ection of the anchor from the face of the attachment (base plate).
- 6. Calculate and record the embedded depth of each anchor. This dimension is item 4 minus item 5. Anchors which have an embedd'ed depth less than the following minimum embedments shall be indicated in column 8.
Anchor Size, In. Minimum Embedment, In. 3/8 1 5/8 1/2 2 1/4 5/8 2 3/4 3/4 3 1/4 7/8 4 1 4 1/2
- 7. Record the individual torque values for those anchors which
/_ do not meet 80 percent of the installation torque values herein. The torque testing may be terminated when the torque value for that size anchor is met. The anchor shall be con-sidered acceptable if during the test, (a) the anchor does not slip as would be evidenced by continuous turing of the nut with-out appreciable increase in torque value, or (b) the minimum torque can be reached before the nut rotates one complete turn.
Torquing shall be accomplished using calibrated, dial, type, manually-operated torque wrenches (calibration interval not to exceed two months). A calibration variation of + 4% of full ,g l scale is permissable. Before torquing, the exposed threads i-of the anchor shall be cleaned by hand wire brushing. Where two nuts are encountered, the outer nut shall be removed while holding the inner nut with a wrench so that it is not disturbed while removing the outer nut. The. torque testing may proceed. When torque tes ting has been completed, the outer nut shall be re-installed to 1/4 turn past the finger tight condition. Anchor Size, In. Installation Toroue, #t-lbs. 3/8 30 1/2 50 5/8 70 r 32/ ,29 l 3/4 150 7/8 200 1 250
Rev. 2 Page 4 of 4 -g= Anchors which do not meet the minimum torque values shall be t L. , . indicated in column 8. Any anchor which is shown to be deficient in torque value shall be retorqued to the applicable installation torque values shown above and shall be indicated as being retorqued in column 8 with the notation "retq". b2/ i30 b
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ATLOrENT B Page.l.of 9
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=. = s ULTRASONIC DETE?JilNATION OF
. INSTALLED MICHOR EOLTTENGTHS 1.0 PURp0SE AND SC0p? -
1.1 This decu=ent establishes the precedure for ultrasonic deter-mi. nation of nc=inal length of instilled anche.r belts and .rc-vides spec 1ric requirements for equipment, tecnn1gue, docu- .. mentatien system and test cpirater qualificaticas. 1.2 This precedure is applir.able tc belts of all si:es.
, 2.0 _RE S ENCES 2.1 ASME BOILER --
AND PRES 5URE VESSEL CODE, Secticn V. NCNDESTRUC-
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- 2. 2 GCOUPATICNAL CFR 1910, Departnen SAFETY AND HEALTH STANDNiDS (OSHA) TITLI 29 cf Labcr
; 3.0 GENERAL 3.1 Defir.itiens
3.1.1 Calibraticn
C=carisen with and/or adjustment to =ee: One accuracy and precisica of a scandard er calculated quantitative values er qualitative conditiens which nave a known degree cf c edibility and reliability. 3.1.2 Cadifica ticn: Objective evidence cf qualifica:icn. 3.1. 3 Cencracter: Any c:- anization or individual supplyinc c=penen s,'=atariais er services to Stone a Pecster Engineering Ccrpcratien either direr.ly er indirectly thrcugh a third party . 3.1. 4 Nondest uctive Testine: A means of examination whereby a quan:1ac1ve er qualicative assessment er mechanis=s ~ ~ or material nature er characteristics is per'er ed by , metheds which i=parc nc imediate er latant deletericus effects.
3.1.5 Ot-MDT
Stcne & Webster Engineering Ccrpora:icn Non-
.G cescructive Test Grcup, cuality Assurance Department, Ecs t. n.
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~ BV1, 7902-03
. . A"ATAC+ENT B Page 2 of 9
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3.1.6 Oualification
Capability as indicated by c = paris:n to an eszzolisned or cefined standard of perf:mance. 3.1. 7 Test Ecui: ment: The apparatus, instrumentation and materials Ina: are used to generate test data and the perfor ance of which, when used in ' testing, can influence the e edibility of test results. 3.1.8 Test Methed: A testing discipline as defined by the pnysicai energy er principal empicyed. - 3.1.9 Test Personnel: inese persons wnc:e involvement in the operation anc/cr acr:inistratien of a test can influence the credibility of the test result. 3.1. 10 Test Procedure: A ;resentation cf recuirements set fora in sufficient de.zil te guide and control a test-ing operatien. 3.l. 11 Test Standards: Material samples er devices which pro-Vice a source cf kncwn and reliable infor.atien. g .
. . . 3.1.12 Test Technicue: The specific manner, including materiais -
{ anc equipmen: used, in which a test is perfomed. ' 3.1.13 Test Valida:ict: The process of ~previding the cbjective trutn :na a test precedure will provide the required informatien and is feasible cf applicatien. 3.2 Rescensibility
. Tne Quality Assurance Depa. ment.is responsible f:r the i=ple-mentation and maintenance cf this precedure.
3.3 Safety The test instrumentation utilized in accordance w.ith this prc- ,.
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cedure is pcwersd by self-c:ntained batteries and thus cresents . no electric shock hazard during ncrmal c:eration. Under no f; circu= stances shculd operatien be attempted with any car:' cf < the protec-ive casing removed; as high voltages de exist in the . internal wiring cf the instrument. During pericds of battery y charginc, the three-wire pcwer cr.rd of the charger shall be & connected only to a three-wire receptacle wntch has been prop-erly grcunded in accordance with the requirements of Reference
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BV1, 7902-03
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Page 3 of 9 y . 3.4 Personnel Personnel who perfem ultrasonic measuring shall be cualified and certified in ac:crdance with Stone & Webster Engineering Corporatien Precedure QC-14.4, NDT PERSCNNEL QUALIFICATION., CERTIFI"ATION AND TRAINING. All' i nterpretatien and/or evaluation of instr =ent nresentatien .shall be c:ndu:ted
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by personnel who are qual' i fied and certified to Level II or Level III. 3.5 Ecuiement
3.5.1 Instrumentation
SONIC FLG/THICRMESS SCOPE, Medei FTS Mark I er equivalent.
3.5.2 Transducer
1 to 5 MHZ, 3/8 inch to 1 inch straight bea:::
. 3.5.5 Ccuplant: P/G-001, Supplied by Sonic Ins:=ents.
In: rporated 3.5.4 Reference Standards: .. Q a. Carten Steel Refe ence Eleck C/S 1 or equivalen: t b.. Stainless Steel Reference Sleck S/S 1 ::,ectivaien: 3.5 Technicue of Measure.en: Surface Conditicn - Sur' aces sha11 be smdcth, free of dirt, grease, lecse scale, weld spatter and e. bedded sand. 4.0 PROCEDURE 4.1 Test Calibratien The instraen: shall be set.up for de eminations using an expanded range as felicws: . 4.1.1 Allcw at least two =inutas for wa= up time after turn-ing en the inst = en: .
- -- - 4.1. 2 Set frequency selector en 5 and apply the transducer to the 2 inch dimensien en the appr:priate stainless er carben steel reference stancard, using a small am:un:
cf ::upla .t (see figune 1, Attachment 5.1). m *
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kITACwSC3 Page 4 of 9 45)' , . y-4.1.3 Ident.ify the initial pulse and set the DELAY centrol such that it corresponds approximataly with the :ere mark en the instru=ent gradicule (scope screen). , 4.1.4 Adjust the % u!AL CALI5 RATION and DELAY centrols such that the hori: ental rance of the sreen is calibrated frcm
. ero to a range appropriate to the expected leng.tb of th'e bolt to be measured.
4.2 Hensurina Procedure - 4.2.1 A minimum of two minutes shall be allowed for warm up of the instrument after it is switched en. . 4.2.2 Prior to inspection,ac:uracy of measuremer.: shall be veri-fied utili:ing a bolt er belts of c:mparable size and ma-terial as the bolt or bolts to be tas ad. 4.2.3 Using a sufficient a unt of c:uplant, apely the trans-ducer to the end cf the belt to be measured and read the indicated length.
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4.2.4 The follcwinc data shall be recorded en the Ultrasonic _..(Sh - Exa=ination 5eport, Form 5040.50. ,
- a. Appropriate test data as indicated en the form
- b. Bolt identificati:n
- c. Measured length
- d. Specified length of the belt (for ccmparisen wi:h c.)
4.3 Pest Cleanine The surface .shall e wiped clean of c:uplant follcsing examina-ti;n. 4.4 Docu=en tatien . All records of test furnish evidence of activities which affect qual i ty. The records shall be censidered as c:ntract related ma-terial and cust be maintained at the iccatiens and fer the period of ti=e which is required by the c:ntract. 4.5 Accectance Criterien 527 136 The acceptable minimum nc=inal bolt length shall be as designated ($) in the applicable specification. - ew es 3 r,-> c m a n y a i t j E ; $ ' "f il s 3 ' J A i.1 d2b w h,i
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, Page 5 of 9
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- 5.0 ATTACd.MErfT3 5.1 Figure 1. R .- nSiCE STNiDAROS , ,
- 5. 2 Ult: aseni: Examination Report, Fem 5040.50 5.3 Ultra::nic Examination - Precedure Validathn k
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4 7 .- He!'erence Itandards 1 - Carben ' Steel =arked C/S 1 - Stainless Steel =arked S/S' All dimensions to be accurate to * .002 inches ,, O g atti g . N . 1" . I
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e ATIAC+ENT B STONE & WEEs:i3 ENGINEERING CORPORATION page 7 of 9
' ULTRASONIC ?.XAMINATION REPORT 2%.a u q;p p
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' BASEPLATE WORK AITrliORIZATION LINE NO. 16 t//-/f-/f)Il-QMIANGF..I NO. M-I ISO NO. M M APPLICABLE PROCEDURES TEITORARY SUPPORT SKETCH BV-1, 7902-01 y -
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OPERATIONS - SHIFT SUPERVISOR Cfry /6 Sf,p act Date DUQUESNE LIGHT COMPANY - QUALITY CONTROL , d 87f nat6re ip/ Date DUQUESNE LIGHT COMPANY - CONSTRUCTION F/pbz/[ d -/o ,7 9 Sigfa'ture Date , SCHNEIDER, INCORPORATED - CONSTRUCTION 6. ff/ Signature 4Date-Lv -7f ADDITIONAL REOU1REMENTS
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Report No. of r Dato 6-/7-77 ACTION ITEM REPORT
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- Pipe Support / Anchor Verification Program Ecaver Valley Power Station-Unit No.1 s
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_ATTACHMEN l U
'SWEC GENERATES LINE PACKAGES
{ (VI A TRANSMITTAL) DLC-ENGINEERING e{ (VIA TRANSMITTAL) DLC-CDN { (VIA TRANSMITTAL) SCHNEIDER INC. SUPERINTENDENT f t SCHNEIDER INC. INSPECT AND SCHNEIDER INC. WALK-LINES DOCUMENT TO 7902-01. FOR PREWORK INFO SCHNEIDER INC. SUPERINTENDENT SWEC TEMPOR ARY SUPPORTS DLC-CDN <r { (VIA TRANSMITTAL) POR W IF NO TEMPOR 4RY SCHNEIDER INC. SUPERINTENDENT ; SUPPORTS SUPPCRTS REQUIRED I REQUIRED SCkNEIDER INC. FOREMAN AND CRAFTS INSTALL TEMPOR ARY SUPPORTS SCHNEIDER INC. SUPERINTENDENT h SWEC AUTHORIZ ATION S!GN-CFF - p <r DLC-CDN IF NO TEMPORARY h SUPPORTS REQUIRED OPER ATION SHIFT SUPERVISOR AUTHORIZ ATION S!GN-OFF h NSOS AUTHORIZATION SIGN-OFF SCitNEIDER INC. .
SUMMARY
OF-ACTION ITEM, SCHNE! DER INC. AUTHORIZATION SIGN OFF : DLC-CDN 4 4 SCHNEIDER INC. CR AFTS PERFORM SWEC DISPOSITION TESTS 7902-02 OR 7902-03 _ g ACTION ITE'.tS ONLY DLC-CON 1r j SCHNEIDER INC REMOVE TEMPOR ARY Y SUPPORTS DLC-ENGIN E ERING {V V INFO COPY SCHNEIDER INC. REVIEW SCHNEIDER INC INCCRPORATION { INTO LINE PACKAGES AND PERFCRM DISPOSITION See Flow Chart for Completed Packages
- AS DETERMINED BY SWEC 52.7 163 TASK FORCE FIELD GUIDELINE FOR IE BULLETIN 79-02 12690 88 SKS-3
rTAtBBENIE' p FLOW CHART FOR COMPLETED PACKAGES SCHNEIDER REVIEW FOR COMPLETED PACK AGE o SCHNEIDER SUPERINTENDENT 1I OLC-CDN - NOTIFY OPERATIONS TASK COMPLETE S E w-SEO t
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IF NO E AIR'S WITH E AIR'S
- NOTIFY CLC-ENG OF STATUS SWEC 00STON FOR DISPOSITION SWEC-00STON Y
$ F, w-SEO FOR ACTION / NON ACTION NON ACTION - ' * -
o SEN7 EAIR ACTION TO ALL PARTIES SEND TO SCHNE10ER FOR REWORK PER DISPOSITION 527 164 TASK FORCE LINE PACKAGE GUIDELINE FOR IE BULLETIN 79. 02 12 6 9 0. 0 9 - S K S -4
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'C, ,B, NOITAU AI RETI RC 'A* DETSET iNECREp GNILl AF -LAVE ETIS NO,'N!:i NOITCEPSNI . oi g_g - L AUSIV 1.PE S 5HCNA 2N GNE QER DERREFED /EUQROT
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' NITELLUB 20-97 DEMROFREP KROW FO SUTATS
l PLATE INSPECTION - Q -- - . - _ _ - ._ G/6/79 f ( INTERIM OPE RATION APPROX. 40 DAYS 9/I [79 (NO INSPECTIONS) ( REFUEL OUTAGE f2/31//9 l I A FINISH IN SPECTION ' ! II k 2 / 31/ 7 9 E N GIN EE RI N G DLCe Sd W 4/14 /79 FI E L D EN GIN E E R I N G OFFICE _ . _ , . _ n, - 6/4/79 . u, IB E AVER VALLEY UNIT NO,1 N NRC I/E IBULLETIN 79-0 2 0- & . PIPE S UP PO RT BASE PLATE os COM PLI ANCE PRGGRAM u F. F. G/27/ 79 ATTACHMENT ~6}}