once fastening mechanism 20 has been suitably tightened in certain industrial applications it may be desirable to provide additional safeguards for the integrity of the joint connector other than the single safeguard of the safety latch shown in the prior art apparatus of fig1 and 2 fig3 6 show an embodiment of the present invention clamp apparatus 46 may be used in a variety of industrial applications such as in ducting for aerospace applications such as conveying bleed air from turbine engines that is used for aircraft environmental control systems and for purposes such as deicing such pneumatic systems employ duct gas bleed leak detectors which are temperature sensitive clamp 46 may be substantially similar to clamp 10 having a strap 48 and two or more retainer segments 50 fastening mechanism 58 will include a safety latch 52 having wings 54 and an elongated tang 56 which will be operably configured to be long enough so that if t bolt 60 fails strap 48 will be permitted to loosen enough to enable the pipe ends to separate enough to leak and thus be detected by the duct gas bleed leak detection system but not enough that clamp 46 falls off the joint and permits the pipe ends to become completely separated t bolt 60 is pivotably mounted in bushing 70 held in loop 72 of strap 48 trunion 73 is pivotably mounted in bushing 74 which is held in loop 76 of strap 48 the present invention also includes a secondary strap mechanism.