Try OSHA 1910.137(B)(2)(vii)
Table I-6. - Rubber Insulating Equipment Test Intervals
___________________________________________________________________
|
Type of equipment | When to test
___________________________|______________________________________
|
Rubber insulating line hose| Upon indication that insulating value | is suspect.
Rubber insulating covers | Upon indication that insulating value
| is suspect.
Rubber insulating blankets | Before first issue and every 12 months
| thereafter(1).
Rubber insulating gloves | Before first issue and every 6 months
| thereafter(1).
Rubber insulating sleeves | Before first issue and every 12 months
| thereafter(1).
___________________________|_______________________________________
Footnote(1) If the insulating equipment has been electrically
tested but not issued for service, it may not be placed into service
unless it has been electrically tested within the previous 12 months.