| |
Section VIII
Division 1 |
Section VIII
Division 2 |
Section VIII
Division 3 |
| |
"Unfired"
Pressure Vessel Rules |
Alternative Rules |
Alternative Rules for
High Pressure |
| Published |
<1940 |
1968 |
1997 |
| Pressure Limits |
Normally up to 3000 psig |
No Limits either way, usually 600+psig |
No Limit Normally from 10,000 psig |
| Organization |
General, Construction Type &
Material U, |
General, Material, Design, Fabrication |
Similar to division 2 |
| UG, UW, UF,
UB, UCS, UNF, UCI, UCL, |
and others |
KG, KM, KD, KR, KE, KT, KS |
| UCD, UHT, ULT |
AG, AM, AD, AF, AR, AI, AT, AS |
|
| Dessign Factor |
Design Factor 3.5 on tensile (4' used |
Design Factor of 3 on tensile |
Yield based with reduction factor for yield |
| previously)
and other yield and |
(Lower factor under reviewed) and other |
to tensile ratio less than 0.7 |
| temperature
considerations |
yield and temperature considerations |
|
| Expermental stress |
Normally not required |
Introduced and may be required |
Experimental design verification but may |
| Analysis |
|
|
be exempted |
| |
Few restrictions on matenials: lmpact |
More restnictions on mateerials: lmpact |
Even more restrictive than Division 2 with |
| |
required unless exempted: extensive |
required in general with similar rules as |
different requirements, Fracture toughness |
| Material and lmpact |
exemptions under UG-20, UCS 66/67 |
Division 1 |
testing requirement for fracture mechanics |
| Testing |
|
|
evaluation |
| |
|
|
Crack tip opening displacement(CTOD) |
| |
|
|
testing and establishment of Klc and/or Jlc |
| |
|
|
values |
| NDE Requirements |
NDE requirements may be exempted |
More stringent NDE restnictions: |
Even more restrictive than Division 2 : |
| through
increased design factor |
Extensive use of RT as well as UT, MT and |
UT used for all butt welds, RT otherwise, |
| |
PT. |
extensive use of PT and MT |
| |
Different types with butt welds and
others |
Extensive use/requirement
of butt welds |
Butt Welds and extensive use of other |
| Welding and |
|
and full penetration welds including non- |
construction methods such as threaded |
| fadrication |
|
pressure attachment welds |
layered, wire-wound, interlocking strip- |
| |
|
|
wound and others |
| User |
User or designated agent to provide |
User's Design Specification with detailed |
User's Design Specification with mors |
| specifications
(see U-2(a)) |
design requirements (see AG-301.1) |
specific details (see KG-310)including |
| |
lnclude AD 160 for fatingue evaluation |
contained fiuid data, etc with useful |
| |
|
operation life expected and others. |
| |
|
Designer defined |
| Manufacturer |
Manufacturer to declare compliance in
data |
Manufacturer's Design Report certifying |
Same as Division 2 |
| report |
design specification and code compliance |
|
| |
in addition to data repot |
|
| |
|
Professional Engineers' Certification of |
Same as Division 2 but the Professional |
| Professional |
|
User's Design Specification as well as |
Engineer shall be experienced in high |
| Engineer |
Normally not required |
Manufacturer's Design Report |
pressure vessel desingn and shall not sign |
| Certification |
|
Professional Engineer shall be |
for both User and Manufacturer |
| |
|
experienced in pressure vessel desingn |
|
| Safety Relief
Valve |
UV Stamp |
UV Stamp |
UV3 Stamp |
| Code Stamp and |
U Stamp with Addition markings |
U2 Stamp with Addition markings |
U3 Stamp with addition marking denoting |
| Marking |
lncluding W, P, B, RES: L, UB, DF: RT, HT |
including HT |
construction type: HT, PS, WL, M, F, W, |
| |
|
|
UQT, WW, SW |
| Hydrostatic Test |
1.3 (Was 1.5 before the use of the 3.5 |
|
1.25(may be exempted for autofrettaged |
| |
Design Factor in the 1999 Addenda) |
1.25 |
vessels) |
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