Telltale hole: when to use it
Telltale hole: when to use it
(OP)
thread809-255764: API 650 telltales - to plug or not to plug
Dear fellows,
According to API-650,
5.7.2.10 Reinforcing plates for shell openings, or each segment of the plates if they are not made in one piece, shall be provided
with a 6 mm (1/4 in.) diameter telltale hole. Such holes shall be located on the horizontal centerline and shall be open to the
atmosphere.
5.8.11.4 All non-circular miscellaneous pads shall have rounded corners with a minimum radius of 50 mm (2 in.). Pads that
must cover shell seams shall be provided with a 6 mm (1/4 in.) telltale hole (see 5.7.3.4).
Is that a reccomended practice?
Dear fellows,
According to API-650,
5.7.2.10 Reinforcing plates for shell openings, or each segment of the plates if they are not made in one piece, shall be provided
with a 6 mm (1/4 in.) diameter telltale hole. Such holes shall be located on the horizontal centerline and shall be open to the
atmosphere.
5.8.11.4 All non-circular miscellaneous pads shall have rounded corners with a minimum radius of 50 mm (2 in.). Pads that
must cover shell seams shall be provided with a 6 mm (1/4 in.) telltale hole (see 5.7.3.4).
Is that a reccomended practice?





RE: Telltale hole: when to use it
RE: Telltale hole: when to use it
RE: Telltale hole: when to use it
API-650 says:
"Pads that must cover shell seams shall be provided with a 6 mm (1/4 in.) telltale hole (see 5.7.3.4)."
I'm confused. All pads must have telltale holes, isn't that right?
RE: Telltale hole: when to use it
RE: Telltale hole: when to use it
About leave them open,
Our assembly supervisor wants to close the holes. I told him not to close them (API is crystal clear). But he insists, saying he is an experienced 70 years old engineer and did that in more than 10 sites here in Brazil with sucess. He called me nuts when I told him to put grease in the holes.
RE: Telltale hole: when to use it
RE: Telltale hole: when to use it