(a) Requirements. - (i) Portable tanks shall be located where it is not possible for employees or equipment to come into contact with overhead power lines.
- (ii) All discharge lines shall be properly secured.
- (iii) No employee shall jump from one tank top to another.
- (iv) All fixed mud guns used for jetting, shall be pinned or hobbled when unattended.
- (v) Hoses used for jetting operations shall be manned and an employee stationed at the pump control to shut down the pressure in the event of an emergency.
- (vi) When necessary for an employee(s) to enter a mud tank which has contained toxic fluid, the Rules and Regulations as specified in Chapter 4, Section 5. , shall apply.
- (vii) Standard railings shall be provided on the inside of all mud tank walkways. Where such walkways are four (4) feet or more above ground level, both sides shall be provided with standard railings.