ML19322A778

App 5F of Oconee 1,2 & 3 PSAR, Reactor Bldg Instrumentation.

ML19322A778
Person / Time
Site:	Oconee
Issue date:	12/01/1966
From:	DUKE POWER CO.
To:
References
NUDOCS 7911210798
Download: ML19322A778 (4)

Text

O O

O 0003 350 ,

$n O as E.

S to

'"22*2"77P i!

1 APPENDIX SF REACTOR BUILDING INSTRUMENTATION

1. SCOPE The purpose of the instrumentation is to measure the structura.1 response of the building, during and after prestressing and during proof testing, so that it can be compared to the theoretical analysis. A test pressure of 1.15 times the 44 ,si design pressure is considered suitable f ar this.

The structural response of the building will be assessed by comparing the theoretical analysis to test results of strains and deformat'.ons at bound-aries, points of stress concentration, openings, areas of maximum creep, and at sections representing typical stress conditions.

2. NUMBER AND TYPE OF INSTRUMENTS The following approximate numbers of instruments will be installed in the first Reactor Building. Calibrated deflection rods for measurir-e, building deformation will be installed in the second and third React.sr Buildings.

/' 118 Two element strain rosette, waterproofed,

( Budd Company designation C6- 121-R2TC or equal to be attached to the reinforcing bars.

9 Linear element, electric resistance strain gages, BLH designation AS9 ? (Valore Type) or eqt a1 to be attached to the surface of the concrete.

1 30 Calibrated deflection rods for measuring building defo rmation. ,

7 Electric resistance strain gage, Budd Company desig- -

nation CP-1101 EX or equal to be attached to the surface of the concrete for measuring crack propagation.

1 1 Epoxy coating, (See Fig. 5-7) to observe cracks in concrete.

6 Load cells each containing strain gauges to be attached to the tendons.

18 Three element rosette, electric resistance strain gauges Budd Company designation C6-141D-R3Y, or equal, to be attached to the inside and outside face of the liner and penetration nozzles.

O" 35'l "0000 r

5F-1 (Revised 4-29-67) s ~ $f ^lb u

26 Two element strain rosette, Budd Company desig-nation C6-141-R2T or equal to be attached to the inside face and outside face of the line r and pene-tration nozzles.

3. LAYOUT OF INSTRUMENTS The instrument layout is shown on Figure 5-7. The types and locations of the gauges are described in the legend on the Figure.

4. PREPARATION AND INSTALLATION OF RESISTANCE STRAIN GAUGES Because of the well-known vulnerability of the bonded resistance gauges to moi s tu r e , special care will be taken in bonding and waterproofing of the gauges.

In order to reduce the possibilities of faulty preparation of the gauges in the field, the gauges will be encapsulated and the wires soldered to the gauge leads and then waterproofed in the shop.

Bonding and waterproofing mate rials such as "Budds" GA- 1 o r GA-4 bonding cements and GW- 1 and GW-2 waterproofing coats or as specified will be used to install the gauges.

5. CALIBRATION OF RESISTANCE STRAIN GAUGES Gauges will be calibrated in accordance with the manufacturer's instruc-tions and set at zero readings during installation.

6. EFFECT OF CONCRETE PROPERTIES ON RECORDED STRAINS To determine the strains that are induced in the structure by the test load, an evaluation will be made of the strains due to: creep, autogenous growth, thermal diffusivity and coefficient of thermal expansion of the concrete. To determine the stresses, it will be necessary also to evaluate the modulus of elasticity and poissons ratio. A test program is proposed with a series of test cylinders to evaluate these properties.

7. EFFECT OF TEMPERATURE Thermocouples will be installed to measure temperature gradients in the concrete and the liner.

8. PROCEDURE

-The following procedure will be followed:

5F-2 (Revised 4-29-67) } } }-

a. Test strain gauges immediately after installation.

b. Test strain gauges immediately after pouring concrete.

c. Record measurements at increments of 10 psi and up to 40 psi and 5 psi thereafter to proof-test pressure.

d. Record measurements at 15 psi decrements during decom-pression.

e. Observe the development of cracks during load application.

Measurement of cracks with mechanical dial gauges should be made when deemed pertinent by the test engineer.

t f~000 353 0

l P

5F-3 (Revised 4-29-67)

_