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Interpretation Response #PI-74-0154 ([The Cincinnati Gas & Electric Company] [Mr. Henry R. Meyers])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: The Cincinnati Gas & Electric Company

Individual Name: Mr. Henry R. Meyers

Location State: OH Country: US

View the Interpretation Document

Response text:

December 17, 1974

Mr. Henry R. Meyers
Manager, Engineering & Planning
Gas Department
The Cincinnati Gas & Electric Company
Cincinnati, OH  45201

Dear Mr. Meyers:

In your letter of November 18, 1974, you ask if the internal joint clamp you are considering for use in sealing a 24-inch cast-iron bell and spigot joint main would be considered as a mechanical leak clamp as required under 49 CFR 192.753(a).  As described in the enclosure to your letter, this unit consists of a performed rubber boot that is designed to be installed on the inside of a circumferential joint and to seal against the prepared internal surfaces on each side of the joint.  This boot is then locked in place by internal expansion rings.  This would be considered as a mechanical leak clamp.

Thank you for your interest in pipeline safety.

                                                                        Joseph C. Caldwell
                                                                        Office of Pipeline Safety

Regulation Sections

Section Subject
192.753 Caulked bell and spigot joints