ML19206B105
| ML19206B105 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/08/1969 |
| From: | Moseley N US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML19206B102 | List: |
| References | |
| 50-320-69-01, 50-320-69-1, NUDOCS 7904210803 | |
| Download: ML19206B105 (6) | |
Text
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U.
S. ATOMIC ENERGY CO.W SSION REGION I DIVISION OF COMPLIANCE Report of Inspection CO Report No. 320/69-1 Licensee:
METROPOLITAN EDISON CCMPANY (Three Mile Island - Unit No. 2)
Exemption from 10 CFR 50.10(b) granted June 27, 1969 Date of Inspection:
July 23-25, 1969 (Initial)
Inspected By-b 7/8 /49
~i. Whi*esell, Reac or Inspector (Construction) Date D.
E Reviewed By :
7[8 r
Moseley,'Seniog/heactor Ir.spector Date N.
C.
Proprietary Information:
None GUMMARY The quality assurance program being developed for implementation to control the work was reviewed.
The procedures appear to be adequate for' the work authorized by the exemption from 10 CFR 50.10(b).
Burns & Roe (B&R) specifications relative to earth work and concrete work were reviewed and found to be adequate.
Blasting work is under the control of licensed blasters and is being performed in accordance with the State Blasting Codes.
Maximum particle velocity has been established and all shots are monitored with two 3 axis siesmographs to verify that the limit is not exceeded.
UE&C is erecting an additional batch plant adjacent to the existing batch plant to insure that sufficient capacity is available to supply the requirements at both units simultaneously.
Concrete materials have been sent to Pittsburgh Testing Laboratories (PTL), at Pittsburgh, Pennsylvania, for the specified tests of the materials and the various trial mixes of the specified classes of I
concrete.
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DETAILS I.
Scoce An announced visit was made to the sire of the pressurized water reactor being erected on Three Mile Island near Middletcun, Pennsylvania.
The purpose of this visit was to investigate the cuality control precedures being developed for the control of tne work authorized under the exemption, and to observe the work and audit records relative to the site preparation in progress.
II.
Persons Contacted Met-Ed Mr. George Bierman, Project Manager (By phone - 7/28/69)
Mr. Vern Stuebner, Resident Engineer Mr. Gene Hreczuch, Site QA Engineer Mr. Bud Avers, QA Manager (G7U)
UE&C Mr. Milo Prisuta, Site QC Manager III.
Quality Assurance Procram A.
Met-Ed l.
Met-Ed's Resident Engineer and Site Quality Assurance Engineer currently responsible for policing adheyence to specifications, procedures, etc., relative to the construction of TMI unit 1; will also have the same responsibility for the work authorized under the exemption.
2.
Met-Ed is currently developing a quality assurance manual No. ICA-1 for implementation at TMI unit 1.
The inspector was informed by Mr. George Bierman that this manual would
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be extended to covar the work authorized by the exemption and would be modified as required to be consistent with the commitments in the application, and implemente.d for the control of unit 2.
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3.
Mr. Bierman explained ro the inspector that all design drawings, specifications, procurement documents, etc.,
must be submitted to Met-Ed for review, and their cc= ment or concurrence obtained.
These procedures are provided for in TMI No. 1-CA-1.
Met-Ed delegates t'.le respoasibility for such reviews to either GPU or MPR, and in some instances to both.
This procedure raises the question of the available manpower in these organica-tions, when the paper traffic really gets heavy.
This will have to be pursued in greater depth in the near future.
B.
Burns & Roe 1.
B&R have no representatives at the site as yet, and it was only possible to review their specifications released to the field for the control of the site preparation work and concrete work.
a.
The site work is being performed under Soecification No. 2555-32, Amendment 7, dated June 2~,
1969, which establishes fill compaction density, defines rock excavation and provides for the perimeter of the rock excavation to be presplit or line drilled.
It also specifies that any undercuts in rock excavation shall be back filled with 3,000 psi concrete.
b.
The concrete work will be performed in accordance with Specification No. 2555-20, Amendment 1, dated June 27, 1969.
This specification provides for the required tests of the various concrete materials and lists the applicable codes and standards, and acceptance criteria.
1.
The above specifications were determined by the inspector to be adequate for the control of the work authorized by the exempr'an.
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C.
United Encineers and Constructors 1.
UE&C has developed some 26 quality control. procedures to date, which are being implemented at TM1 unit 1.
Mr. Milo Prisut'a inforned the inspector that these procedures would be submitted to B&R for their review for comment or concurrence.
Mr. Prisuta also stated that a letter Q n i n..
was sent by him to the Project Superintendent, w ith copies to UE&C's Project Manager, Manager of Reliability and Quality Assurance, pointing out the requirements of the PSAR commitments, that approved quality control procedures would have to be impicmented prior to the start of the work authorized by the exemption.
2.
Mr. Prisuta stated that for the control of the work authorized by the exemption, the approval of the following procedures would be expedited.
a.
" Quality Control Plan for Three Mile Island Nuclcar Station", Rev. 1, dated Decenber 23, 1968.
This document is an overall quality assurance manual that identifies the participating organizations, quality control organization functions, and outlines in a general way the site structural quality control, site mechanical and piping quality control, site electrical and instrumentation quality contrc.'
calibration of test and measuring equipment, control of unacceptable conditions, final acceptance of completed systems and structures.
b.
" Quality Control Procedure for Structural Concrete" No. OC-1, Rev. 3, dated January 20, 1969.
This procedure provides for an independent' testing laboratory to control and test concrete materials and mixing.
It provides for the required batch plant inspections and specifies tests to be made at both the batch plant and point of placement.
It provides for inspection and users test of rebars.
Cadweld splice procedures, tests and acceptance criteria are established.
The required records and other QC documents are provided for.
3.
The QA manual and quality control procedure were revtewed by the inspector and determined to be adequate for the -
control of the work authorized by the exemption.
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IV.
Site Precaration A.
Blastina 1.
The blasting is being pc.rformed by Glasgow, Inc., in recordance with the Pennsylvania 31arting Codes.
The work is under the direction of two blasters, licensed by the Commonwealth of Pennsylvania.
2.
Before prcduction blasting started, test shots were made by vibra-Tech to determine the size of shot, delays, etc.,
in order to limit the energy to a particle velocity of 2 inches per second.
These test shots were monitored with three-axis seismographs.
Frcm these test shots, Vibra-Tech developed the drilling pattern, hole spacings and depths, stemming, shot weight and delays.
All shots are monitored by two 3 axis seismographs located on the concrete foundations of the fuel handli".g building which is the closest structure to the blast area.
3.
The blasting logs were audited and were found to show the station, which is located by description, e.g.,
"NW cor.
of Turb. Bldg."; hole dimensions, type of explosive, weight used, caps used, delays, stemming, time and date.
The logs also record the maximum particle velocity recorded on each axis.
The maximum particle velocity on any of the logs to date did not exceed 0.30 inches per second which is considerably less than the 2.0 inches per second allowable.
4.
Blasting work is scheduled for completion by September 2, 1969.
B.
Concrete 1.
Mr. Prisuta informed the inspectors.that cement from both Nazareth and AllentcWn, together with sand and gravel f cm two possible sources, and the specified admixtures have been sent to Pittsburgh Testing Laboratory -
(PTL) in Pittsburgh, Pennsylvania, for the purpose of making the required tests of the materials in acccrdance with specification 2555-20, and to prepare the necessary trial mixes for the various classes of concrete.
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2.
The results of the 28-day average strength for each trial mix will then be submitted to B&R for evaluation and selection of the design mix for the production concrete.
3.
Mr. Prisuta in formed the inspector that the foundations and slabs for a second batch plant has been cast.
The second batch plant will be identical with, and adjacent to, the existing batch plant.
This is being done to insure their capability to meet the demand for concrete to maintain schedules on both units.
V.
Exit Interview A.
An exit interview was held with Mr. Stuebner, Resident Engineer and Mr. Hreczuch, QA Engineer, Met-Ed: and Mr. Prisuta, QC Manager, UE&C.
B.
The inspector informed the applicant that the procedures developed by Met-Ed and UE&C appeared to be quite adequate for the control of the work authorized under the exemption, and reiterated the PSAR commitment to have such procedures approved prior to the start of work.
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