Original Version

Rule 12.3

12.3    Systems Constructed Prior to These Rules

The requirements of these rules other than the requirements specified in Rule 12.2, do not apply to systems or portions thereof constructed, reconstructed or replaced prior to the effective date of these rules. In all other particulars, such systems or portions of systems shall conform to requirements in effect at the time of their construction or replacement.

Strikeout and Underline Version

Rule 12.3

12.3    Systems Constructed Prior to These Rules

The requirements of these rules other than the requirements specified in Rule 12.2, do not apply to systems or portions thereof constructed, reconstructed or replaced prior to the effective date of such rules, except as set forth below. In all other particulars, such systems or portions of systems shall conform to requirements 1n effect at the time of their construction or replacement.

A.    The following rule was made applicable to all systems on December 12,1967.

1.      Rule 12.2

B.    The following rules are applicable to all systems on the effective date of the order herein.

1.      Rule 17.2

2.      Rule 17.7, 1st paragraph

3.      Rule 32.2

4.      Rule 32.9

5.      Rule 32.12

6.      Rule 33.3-A

7.      Rule 34.1

8.      Rule 34.3-A

9.      Rule 34.3-B

10.    Rule 34.3-C

11.    Rule 35.2

12.    Rule 36.4

13.    Rule 36.5-A

14.    Rule 36.5-B

15.    Rule 36.5-C

16.    Rule 36.5-D(1)

17.    Rule 36.5-D(3)

18.    Rule 42.10

C.    The following rules are applicable to all systems one year from the effective date of the order herein.

1.      Rule 32.7

2.      Rule 32.11

3.      Rule 35.3

4.      Rule 35.4

Final Version

Rule 12.3

12.3    Systems Constructed Prior to These Rules

The requirements of these rules do not apply to systems or portions thereof constructed, reconstructed or replaced prior to the effective date of such rules, except as set forth below. In all other particulars, such systems or portions of systems shall conform to requirements 1n effect at the time of their construction or replacement.

A.    The following rule was made applicable to all systems on December 12,1967.

1.      Rule 12.2

B.    The following rules are applicable to all systems on the effective date of the order herein.

1.      Rule 17.2

2.      Rule 17.7, 1st paragraph

3.      Rule 32.2

4.      Rule 32.9

5.      Rule 32.12

6.      Rule 33.3-A

7.      Rule 34.1

8.      Rule 34.3-A

9.      Rule 34.3-B

10.    Rule 34.3-C

11.    Rule 35.2

12.    Rule 36.4

13.    Rule 36.5-A

14.    Rule 36.5-B

15.    Rule 36.5-C

16.    Rule 36.5-D(1)

17.    Rule 36.5-D(3)

18.    Rule 42.10

C.    The following rules are applicable to all systems one year from the effective date of the order herein.

1.      Rule 32.7

2.      Rule 32.11

3.      Rule 35.3

4.      Rule 35.4